U STYLE "M... 22" and "M... 25" INSTALLATION MAINTENANCE ELECTRIC SWITCH AND LOCK MOVEMENT INSTRUCTION PAMPHLET AND OF THE DUAL CONTROL

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1 INSTRUCTION PAMPHLET U INSTALLATION AND MAINTENANCE OF THE STYLE "M... 22" and "M... 25" ELECTRIC SWITCH AND LOCK MOVEMENT DUAL CONTROL REVISED AND REPRINTED JANUARY, 1943! / 'W,... UNION SWITCH & SIGNAL CO. SWISSVALE, PA. 2M

2 INSTRUCTION PAMPHLET U INST ALLA TI ON AND MAINTENANCE OF THE STYLE "M... 22" and "M... 25". ELECTRIC SWITCH AND LOCK MOVEMENT DUAL CONTROL REVISED AND REPRINTED JANUARY, 1943 UNION SWITCH & SIGNAL CO. SWISSVALE, PA. 2M

3 TABLE OF CONTENTS PAGE S Installation and Adjustments Lubrication How to Change a Movement to Suit a R.H. or L.H. Layout, Operation Instructions for Style M-25 Movement ( INDEX Clutch (Friction) Adjustment Applying New Felt Packing to Clutch Housing.. 19 Clutch Coupling (Spring) Description Commutator Contacts Indication Circuit Controller Motor Cut-Out Dual Control Mechanism Indication Circuit Controller Adjustment of Contacts Descr1pt1on Positions of Cams... ; Interchanging Mechanism to Suit R.H. or L.H. Layout 29 Installation ~- - 5 Levers Interlocking between Hand-Throw and Selector Levers Lever Stands Adjustments Lock Rods Adjustments

4 ... INDEX Lock Box PAG Inverting to Suit R.H. or LH. Layout Lubrication General Winter Lubrication Chart Motor Motor Cutout Adjustment Mounting... 5 Operating Rod Adjustment Operation Circuit Controller Interlocking between Hand-throw and Selector Lever Spring Clutch Coupling Switch Operating Rod Point Detector Adjustment Description Wire Outlet W1r1ng

5 .. (a) R.H. ----"x ----i " ' T~-~... ~~~ Fig. 1. (b) L. H. Style M-22 Movement Layouts 4

6 INSTALLATION AND ADJUSTMENTS Installation: In general, the application of the Style M-22 movement to a single switch is as shown in Figs. l(a) or l(b) and 2, but detail mounting plans approved by the railroad should be followed when installing movements. Movements are assembled at the factory to suit particular layouts when sufficient information is provided in the order. However, since all parts are common, movements can be changed from right hand to left hand and vice versa as required. See detailed instructions on Page 29. After the movement has been fastened to the ties in accordance with the layout plans, the metal letters "N" and "R" should be applied to the ties to designate the position of the switch, and the letters "N" and "R" assembled to the hand-throw lever so as to correspond to the position of the switch. See Figs. 1 (a) or 1 (b) and 2. Adjustment of Stands for Selector and Hand.. Throw Levers: After the movement has been secured in place on the ties, the stands for the selector and hand-throw levers should be adjusted as follows: 1. Throw the selector lever to the "Hand" position and operate the hand-throw lever to drive the movement to one end of its stroke. 2. The stand should be adjusted so as to just make contact with the hand-throw lever when the lever is at the end of its stroke. To make this adjustment, first loosen the jam nut and make certain that the stand is entirely clear of the lever ( the stand should be screwed downward if the lever is resting on it). Then adjust the 5

7 ej;" I,1 --- HOlE z I -,!Oii a,ull CONOUIT j IUClHT...C:,(NOVltw Fig. 2. Typical Mounting Plan For M-22 Movement 6

8 stand upward, one turn at a time, until the stand just makes contact with the hand-throw lever when the lever is at the extreme end of its stroke and tighten the jam nut. Adjustment of Operating and Lock Rods: The lock rod illustrated in Figs. 1 and 3 is of the reversible type for use with either R.H. or L.H. layouts. The adjustments outlined below are specifically for the type of lock rod illustrated, but they can readily be applied to any reversible type of lock rod. After adjusting the lever stands, adjust the operating rod and the lock rod as follows: Remove the cover over the operating bar on the track side of the movement. Throw the selector lever to the "Hand" operating position. By means of the hand-throw lever, operate the movement to the position corresponding with the position of the switch. Remove the outer nuts from the end of the operating rod, insert the rod through the switch lug or basket, and replace the nuts loosely. Connect the operating rod to the lug on the operating bar of the movement. Adjust the nut engaging the switch lug or basket until proper pressure (determined roughly by means of a "Tommy" bar) between the closed point and the stock rail is obtained. Operate the movement to the opposite position by means of the hand-throw lever and adjust the other engaging nut until proper point pressure is obtained in this position. Nothing is gained by excessive pressure. Remove the cover from the circuit controller compartment and the covers from the openings in the sides of the case through which the lock rod is to be inserted. Remove the clamp bolt and outer adjustment nuts from the assembled lock rod. Operate the switch to mid-position 7

9 FOR LH. MOVT. (41 Fig. 3. Slide Bar and Lock Rod Assemblies, Right Hand and Left Hand, for Style M-22 Electric ~witch and Lock Movement. by the hand-throw lever, and insert the lock rod through the movement case and front rod lug. Replace the clamp bolt and nuts loosely. When inserting the lock rod, make sure that the narrow notches come on the sides adjacent to the corresponding locking dogs as shown by Fig. 3. Measure the switch point openings and adjust the lock rod approximately to suit. That part of the lock rod in which the small notch is downward is marked on the top to indicate the exact location of the notch. The marks are visible through the circuit controller compartment. Operate the switch to the full normal and full reverse positions by the hand-throw lever, provided the movement is not restricted by the locking dog. If the movement is restricted, note the amount that the lock rod must be adjusted and correct for this by the adjustment provided. After the proper adjustments have been made, all nuts on the lock rod should be drawn up tight to securely lock the adjustment, and then a final check should be made to ensure that the adjustments have not changed. The adjustment of the lock rods should be maintained so that the switch can be locked only when the switch point is within a certain distance of the stock rail as specified. 8

10 by the A.A.R. Signal Section or by the railroad's specification. For layouts using non-reversible types of lock rod, which require lock rods to be different for R.H. and L.H. layouts, as may sometimes be standard with our customers, movements will be shipped from the factory with the lock box "G", Fig. 3, assembled to suit the lock rod specified. The locking dog should always enter the small notch in the lock rod first. Therefore, for a right hand layout Fig. 1 (a), the position of lock box "G" should be as shown in Fig. 3 (b), with the dog nearer the rack at the top and the one farther from the rack at the bottom. For left hand layouts Fig. l(b), lock box "G" must be inverted so that the dogs will be as shown in Fig. 3(a). To invert the lock box, follow the procedure outlined below. Be sure the movement is in the position which brings lock box "G" at the end of its stroke nearer the worm gear and motor as shown in Fig. 4. Unscrew bolts "T" that hold the circuit controller to the case. Swing the controller upward, pivoting it about the edge of the case adjacent to the wire conduit. Reverse lock box "G", turning it upside down, taking care that it is replaced properly on the driving studs of the slide bar. Replace the circuit controller in its original position, fasteni111 it down by means of bolts "T". Care should be taken to see that the circuit controller segments have not moved while pinion "F" is out of mesh with rack "G". It should also be noted that the controller is resting solidly on the shoulders of the supporting studs and finished pads in order that proper engagement between the gear "F" and rack "G" is secured. 9

11 L N S M P T O W L N B.. Fig. 4. Indication Circuit Controller. 10

12 '.. Indication Circuit ControlleT (Figs. 4, Sand 6): The circuit controller is equipped with four motor control contacts of the segmental type, Fig. 5, mounted on square shaft "R" which is driven from the rack of lock box "G" by pinion gear "F." When the movement is in the normal position, two of these contacts are closed and two are open as shown. When the movement reaches the full reverse position, the dosed contacts are opened to break the motor circuit, and the open contacts are closed to provide a circuit for operating the movement back to its normal position. The indication equipment is composed of two partsnormal indication contacts "L," and reverse indication contacts "M," Fig. 4. Each part comprises a cam "N" or "P" and a pair of contact springs to which a cam follower "C" carrying a roller "D" is attached. See Fig. 5. Point detector equipment is optional, and when this is required, the linkage shown in Fig. 6a is provided. This includes crank "J" and link "K," Fig. 5, which connect to the cam follower "C." With the movement in its full normal position, the notch in cam "N" is up as shown thus permitting roller "D" to drop into the notch and the normal indication contacts to close, providing the switch points as checked by the point detector are properly closed. When the switch points are properly closed, one roller "a," Fig. 6a, will oe in the notch in point detector bar "A," and the linkage under the effect of springs "U" and "Z" will move so as to allow the contacts to drop. Reversal of the movement rotates cam "N" counterclockwise (shaft "R" driven by rack through pinion gear "F"), roller "D" engages and is raised by the driving surface of cam "N" to open contacts "L," one contact 11

13 (or both) engaging short-circuiting strip "S." When the movement reaches its full reverse position, the notch in cam "P" is upward and the reverse contacts "M" close in the same manner as described for the normal indication contacts, and the normal contacts remain open with one contact (or both) engaging strip "S." While the switch is in transit, both normal and reverse indication contacts engage short-circuiting strip "S" to provide a shunt for the indication relay. When the movements leave the factory, the short-cin;:uiting strip is adjusted to shunt one normal and one reverse contact. It can be changed to shunt both contacts to suit the location; that is, whether the movement is used for single switch or crossover, by removing screw "W" and following the directions of the wiring diagram. With the switch and lock movement in the normal position, the cam "N" should be in the position shown in Fig. 4; i.e., with the notch up. Likewise the notch in cam. "P" should be upward when the movement is operated to the full reverse position. When sufficient information is given in the order, these cams are set at the factory to give proper indications for the specified layout. When sufficient information is not given in the order, these cams are set to give proper indications when the movement is applied to a right hand layout with right hand switch point normally closed or to a left hand layout with left hand switch point normally open; and, therefore, if the movement is to be applied to either a right hand layout with right hand switch point normally open or a left hand layout with left hand switch point normally closed, it will be necessary to reverse the position of the cams in order to give proper operation of the indication contacts. 12

14 CAM TYPE INDICATION CONTACT UVHK N SCLDRB SEGMENTAL TYPE MOTOR CONTROL CONTACT Fig. 5. Views of Circuit Controller Contacts. If it is necessary to change the positions of the qims, proceed as follows:-remove springs "L" and "M,'J fig. 6, by removing nuts "B." On movements that are not equipped with point detectors, the springs may be easily removed by disengaging the clamped ends from the dowels. On movements that are equipped with point detectors, the springs may be moved out of the way by disengaging the clamped ends from the dowels and then drawing them toward the gear box until the contacting 13

15 end is free to move downward so that the heels of the springs may be brought upward, thus exposing the cams. With the movement standing in the normal position move cam "N" sideways, forcing it against the retaining coil spring until it is free from engagement with the driving pins, then rotate the cam on the shaft until the notch is on the upper side where it will snap back into place. Run the movement to the reverse position and adjust cam "P" in the same manner so that its notch is up for this position of the movement. Replace springs "L" and "M" with their retaining springs and fasten securely with nuts "B." Keep the operating segments tight by means of the castellated nuts on the controller shaft. Do this by removing cotters (one in each end of shaft), tighten up the castellated nuts, then restore and spread the cotters. The indication contact springs, when fully compressed, should give a contact pressure of 1 % to 2 pounds per contact. The initial tension in the contact springs must be such that the opening between each contact spring and its limiting stop is approximately -h" when fully compressed. This adjustment will ensure a slide on the contact of approximately b ". Care must be exercised to ensure uniform pressure over the full width of the contact. The contacts which bear on the brass segments should give a contact pressure of between 1% and 2 pound~ Steel stops or supporting pieces are provided beneath these springs to prevent the contact springs from being bent downward far enough to be buckled by the segments. Care should be exercised when making adjustments of the contact springs to see that they are not bent downward toward the controller shaft far enough to prevent them riding up freely over the end of the segment. 14

16 Fig. 6. Indication Circuit Controller with Point Detector (One set of indication springs removed). u TERMINAL BOARD Fig. 6a. Midstroke Position of Point Detector Parts. 15

17 A drop of good acid-free non-freezing oil, such as our Spec oil, rubbed over the surface of the segments at frequent intervals will reduce both friction and wear on these parts. By use of a good non-freezing oil, trouble from frost on the contacts may be practically eliminated. If the contacting surfaces are kept clean, the oil will be beneficial, but if dirt is allowed to collect so as to form a paste or gum, trouble may develop. Point Detector (Fig. 6a): Style M-22 dual control movements are furnished either with or without point detector. In either case, the openings in the movement housing for the bar are covered during shipment. When the point detector is to be used, point detector bar "A," Fig. 6, should be inserted through the holes in. the case and connected by means of the point detector connecting rod to the switch point. The normal and reverse adjustments should be made in a certain sequence as one affects the other. The first adjustment should be made with the switch operated to the position in which the point farthest from the movement is closed, and the connection between the point detector connecting rod and point detector bar adjusted. The movement should then be operated to the other extreme position and adjustment made by turning the outer end oi the bar "A" and then tightening the lock nut on the end to maintain the adjustment. The adjustment of the point detector should be main.. tained so that the circuit controller will indicate only when the switch point is within a certain distance of the stock rail as specified by the A.A.R. Signal Section or by the railroad specification. To prevent unnecessary inter- 16

18 ference with signal indications, it is suggested that the lock rod connection be adjusted to foul at less point opening than that at which the point detector is set, which means that the lock rod will foul the locking dog when the switch point is obstructed to the degree required in checking the point detector. It is therefore necessary to back off the lock rod nuts in order to check the point detector. The mechanism of the point detector shown in Fig. 6 is such that starting with the roller "a" on the small diameter of the point detector bar "A" and against the cam ends, a.vs"+*" stroke of the point detector bar "A" is required to break the indication contacts and a stroke of ~"+-h" is required to short-circuit the contacts. A.Vs"+*" movement of the roller "a" in a direction at right angle~ to the point detector bar should open the indication contacts. It is essential, however, that with the movement (and point detector bar) in mid-stroke position that nuts "V" be. set to bear against lever "Y," Fig. 6a, so that all lost motion is taken up, and that lever "Y" is parallel to bar ''A.'' Adjustment of Motor Cutout: The cutout contacts "O," Fig. 4, provided in the circuit controller to open the motor circuit when the selector lever is thrown to the "Hand" position are actuated by the selector lever through yoke "K" and linkage "X,,., Fig. 9. Adjust the rod between top arm "X" (Fig. 9) and the motor cut-0ut yoke "K" so that, with the selector lever standing in the "Motor" operating position, the contacts "O" (Fig. 4) are just closed under full compression when the lost morion between the yoke and the cam is 17

19 taken up in a direction tending to open the contacts. This adjustment, when the selector lever is thrown to the "Hand" operating position, will give a maximum contact opening of about ". Contact springs are adjusted at the factory so as to have a pressure of from lu to 2 pounds when closed. This pressure should be maintained. Wiring: No external wires go directly to the circuit controller or motor terminals. Make all external connections to the terminal board at the motor end of the movement. Arrange jumpers in accordance with instructions on wiring diagram. A print of the wiring diagram is enclosed with each movement. Wi-re Outlet: An outlet, arranged for 2" flexible conduit, is located at the motor end of the movement. If trunking is to be used, an adapter can be supplied to connect the- flexible conduit to the trunking. Friction Clutch: On the extended worm shaft, under the motor cover, is a friction clutch "Q" (Fig. 9) which, before leaving the factory, is adjusted for greater than the average switch load. This adjustment should take care of, with plenty of operating margin, any of the abnormally high switch loads such as may be encountered in service. Readjustment, if necessary due to wear, may be made by inserting ap ammeter in the motor circuit and operating the switch -movement with the switch blocked. The clutch, in this case, will slip in its attempt to drive the obstructed switch and should be set (by turning the adjustment nut) 18

20 to slip at the following values for different combinations of movements and motors. Adjustment to Slip the Clutch Motor Volts Gear Ratio Amps. Remarks 110 Volt 25 Cycle to For Single Switch. Spec to For Mov. Pt. Frog ' 100/110 volt SO Cycle 100/ to For Single Switch Spec / to For Mov. Pt. Frog 110 Volt 60 Cycle Spec to to For Single Switch For Mov. Pt. Frog 110 Volt D.C. Spec to to For Single Switch For Mov. Pt. Frog 20 v.d.-c. series parallel field 20 '188 to ~ Sec. connection Spec. 997-A 20 ~tol Sec. 20 v.d.-c. series field connection Spec to 1 a.o 30 Sec. This adjustment should be checked by operating the switch several times and noting that the clutch slips slightly at the completion of each movement. The clutch housing should not be removed from the shaft unless it is desired to replace the packing, Fig. 7, in the clutch stem, as the packing will be damaged by sliding it. over the threaded end of the shaft. INSTRUCTIONS FOR APPLYING NEW FELT PACKINGS IN CLUTCH HousING (REFER TO FIG. 7):-Measure the length of clutch spring before disassembling, and record this dimension as information for reassembling. Remove the adjusting nut and clutch spring and slide the clutch housing off the shaft. Remove the discs and 19

21 CLUTCH HOUSING ~vr-"""""~"4 --~~~~~~-sr~~~~"""'9o,f --~~~-sf-'~~~~--~ 0 Fig. 7. SEC.'A A" HOLE( 21 DRILL SIZE) PINS PRESSED (PC ) SOCKET rqr IN. LEVER ROD.,.,,,) PIPE TEMPORARY TOOL MAY BE: MADE BY FILING Pl,!'JS ON THE END OF" A PIECE OF" 1 PIPE AS SHOWN. Clutch Assembly and Special Wrench for Packing Gland Nut. plates and take out the small lock screw, using th~special tool, Pc. No , to remove the packing gland nut. Remove the old packing and clean the shaft and the inside of the clutch housing by washing with gasoline. After the parts are thoroughly cleaned and dried, a light coating of lubricant should be applied to the shaft at the point where the new packing is to be applied. The clutch shell should then be assembled to the 20

22 shaft, with the end of the clutch shell meshed in the hub of the gear. One new felt packing, Pc. No , should be slipped over the shaft and tamped securely into the packing gland with the plain end of the wrench, Pc. No After the first packing ring has been assembled, a second felt packing should be assembled in the same manner and tamped down and the stuffing box nut assembled and drawn down, using the spanner end of the special wrench, until it is flush with the bottom of the clutch housing. Then the locking screw should be inserted and drawn down securely. Old clutch plates and fabric discs should be thoroughly cleaned in gasoline to remove any accumulation of lubricant, and then reassembled as shown in Fig. 7. It will be noted that a fabric disc goes in the bottom of the shell, and the first metallic disc is one with teeth engaging the shaft. The remaining discs and plates assemble in the order shown. The clutch spring should be adjusted to its original length and finally checked and adjusted to agree with values given in the table" Adjustment to Slip the Clutch." Motor: The motor commutator should be kept smooth atjd free from grease and excess oil. To clean commutator t?r to clean and grind brushes to fit the commutator use a piece of fine barton paper (not emery cloth); if barton paper is not available, No. 00 sand paper may be substituted. The brush pressure should be maintained between three-quarters and one pound. 21

23 LUBRICATION (See Chart Page 24) Before leaving the factory, all working parts of Mechanism, except the worm and spur gears (D), are sufficiently well lubricated to be placed in service. Every reasonable convenience to facilitate lubrication of the movements has been provided. For best results only lubricants complying with strict specifications are recommended. Recommended lubricants may be purchased in convenient quantities from the Union Switch & Signal Company. Ordering references and specifications defining these high grade lubricants are provided on Catalog Plate P In order to encourage good maintenance, a Lubrication Chart, Fig. 8, is included in these instructions. The Lubrication Chart outlines the usual procedure to be followed, but because of the necessity for brevity in statements more complete information is given as follows: A-Apply Lubricant (Grease) Spec as follows: (1) Point detector bar bearings (Use gun). (2) Surfaces of slide bar and combined lock block and rack "G" using brush or paddle for application. A heavy oil, Viscosity at 210 F., 120 to 200, may be used as an alternate on these surfaces. B-Apply a Medium Body Oil (Viscosity at 130 F. of 185 to 220) to following parts. (See Page 26 for special winter lubrication). (1) Motor (Oil cup at both ends of shaft). (2) Gear Mechanism- 22

24 (a) Vertic_al Shaft-Remove oil plug in top cover, oil will collect in a recess and be led to shaft surfaces needing lubrication. (b) Linkage connections for cut-out circuit controller. (c) For test operations during installation only -all bearings and surfaces which will ultimately receive lubrication from grease (See D-2). (3) Indication Circuit Controller and Point Detector. (a) Shaft and pinion gear bearings and rollers. (b) Linkage and sliding surfaces. C-Apply a light oil Spec as follows: ( 1) Contact segments of Indication Circuit Controller and motor commutator if brushes chatter; but apply sparingly with lintless cloth. D-Apply Grease Spec as follows, from tin containers shipped with movements. (See special winter lubrication instructions, Page 26). ( 1) Worm Gear compartment-requires about 4 pints, and level should be maintained approximately % 11 to 1 ~ 11 deep. (2) Spur Gear Compartment-Requires from 1 ta 1 ~ pints, and level should be maintained ap: proximately ~ 11 to % 11 deep as measured close to the motor pinion. This provides ample depth for the gears to distribute the lubricant. Greater depth should be avoided. The working parts of the Crank Case Compartment 23

25 i l L.... N ~ NA"ID TMROvV,[V[A r-b (MEASURED CLOSE ti PINTS) TO MOTOR PINION) Fig. 8. Lubricating Points for Styles M-22 and M-25 Electric Switch and Lock Movements.

26 Regular and systematic lubrication is recommended, however, the period between times of lubricating depends upon the frequency of operation, climatic and locational conditions, and therefore can be established from experience by the Supervisory Department. (See page 26 for Winter Lubrication). Point of Type of Lubricant and Application U.S. & S. Co. Spec. Known Products Complying with Spec. Method I Apply to Remarks N CJ\ A Alemite Solidified Oil I 32 Push Type Fit- Apply until surplus. is Pressure Gun Grease (Alemite T emprite Solidi- Gun or ting, Bearings visible at edges of bear- Spec fied Oil E.P.) Paddle and Surface ing. (The Prime Mfg. Co.) Heavy Oil (Viscosity Auto. Transmission and Heavy Oil may be used at 210 F., 120 to Rear End Lubricant, S. Oil Can Surface Only as an alternative for 200) A. E.-140 or Brush Grease on Surfaces UA". Medium Body Oil Automobile Engine Oil, S. Oil Holes and B (Viscosity at 130 A. E.-30 Oil Can on Bearings F., 185 to 220) Apply a very light film Low Temperature Low Temperature Lubri- of oil on all contact segc Oil Spec eating Oil (U.S.&S. Co.) Oil Can Surface ments at frequent intervals after thoroughly cleaning. Worm Gear--4 Pints D Gear Compai;tme~t Texaco Stazon "C" Pour Compartment (~" to l~" Deep) Grease Spec~ :l591 (Texaco Co.) Spur Gear-1 U Pints (U" to~,, Deep)

27 (immediately below the gear box) are well lubricated before leaving our factory. Sufficient grease will work down through the crank shaft bearing to keep these parts lubricated in service. The cover under the crank case compartment is provided with two drain holes tapped to receive Ys" pipe plugs. These holes should normally be left open so as to prevent an accumulation of water, which might freeze and stall the movement. In cases where the movements are in locations where foreign matter such as sand and dust might blow into the drain holes, these should be plugged, but care should be taken, especially prior to freezing weather, to remove the plugs and drain the compartment. Pipe plugs for these holes are enclosed in a muslin bag tied in the motor compartment of the movement. Winter Lubrication: The lubricant (Spec. 2591) in the spur and worm gear compartments should be replenished or replaced about every six months if it has been reduced in quantity, or its quality has been impaired. Wherever switch move, ments are to be operated at temperatures which frequently reach 0 F., or lower, the standard lubricants used in the summer months should be drained and the gear~. and gear case washed out with kerosene. Plugs are proyided near the bottom of each compartment to facilitate draining these chambers. The compartments should then be supplied with new lubricant, thinned out with a good grade of kerosene such as Water White Kerosene, or the standard kerosene used in oil lamps for signals. In loca, tions where the temperature does not drop appreciably below zero, we recommend the use of 15% kerosene, and 26

28 in locations where the temperature may frequently drop as low as-30 F., we recommend the use of25% kerosene. This thin lubricant should be used from about the first of November until about the first of April. Care should be taken to drain out the thin lubricant from the worm gear and spur gear compartments at the end of the winter season and new grease of the recommended grade used. This is important, because, if thin lubricant were used in the summer, it would not afford proper lubrication for the summer months. Whenever switch movements are to be used at temperatures which frequently reach 0 F., our low temperature oil, Spec. 1093, should be used from November 1st. until about April 1st instead of medium body oil as specified on chart. 27

29 Fig. 9. Plan and Sectional Views of Gear Box of Style M-22 Movement. (Note:-Spring Clutch Coupling "A" Shown in Engagement with Worm Gear "Z" for Motor Operation). 28

30 Fig. 9. Plan and Sectional Views of Gear Box of Style M-22 Movement. (Note:-Spring Clutch Coupling "A" Shown in Engagement with Worm Gear "Z" for Motor Operation). 28

31 HOW TO CHANGE A MOVEMENT TO SUIT A RIGHT OR LEFT HAND LAYOUT (REFER TO FIGS. 9 AND 10) 1. Remove gear box cover and motor cover. 2. With selector lever in hand operating position, move the mechanism to one end of the stroke with the hand throw lever. 3. Remove the selector lever and hand throw lever. 4. Remove bottom pan "D". 5. Remove the top arm of the motor cutout linkage"x''. 6. Remove the castellated nut on top of the main crank and the four tap bolts, and take off the top bearing plate. 7. Remove the hand-throw pinion and note the position of the wide tooth space on the hand-throw clutch. If the relation between the clutch and the main crank is not already indicated by a punch mark on the clutch in line with the keyway on the main crank, the clutch should be so marked that the same angular relation may be maintained when these parts are reassembled. 8. Remove the retaining straps "W" and drop the switch operating bar and the main crank. 9. Remove spring clutch coupling "A" by loosening the set screws, backing out the studs and removing the two top rollers from shifter arm "E". ~ 10. Remove the hand throw bevel gear "C" and its shaft. 11. Remove shifter arm "E". 12. Remove the selector cam shaft "H". (Top screw in bearing must be loosened). 13. Remove motor cut-out yoke "K". 14. Change the three screw plugs and the cork in the 29

32 bottom hole of the hand throw lever bearing to the opposite hub. 15. Turn locking gear "R" so that punch marked tooth comes directly under the bearing where the hand throw gear is to be mounted. 16. Reassemble motor cut-out yoke "K" and selector cam shaft "H" on opposite side of box. 17. Reassemble shifter arm "E" on opposite side of box. 18. Reassemble hand throw bevel gear "C" with the set screw up and the punch marked tooth space meshing with the marked tooth on the locking gear-"r". Assemble hand lever shaft and screw the set screw firmly into the hole in the shaft. 19. Replace main crank "J", making sure that the crank pin is in the same angular position as when removed. (The top bearing and castellated nut may be used. temporarily to hold the crank in position). 20. Replace the operating bar so that the roller rides in the cam slot and engages the pin on the bottom of the main crank. 21. Replace straps "W" holding the operating bar. 22. Replace the clutch coupling "A", turning the top part of the clutch so as to bring the large tooth space to its original position and into engagement with the same spline on the main crank in accordance with markings as described in No Reassemble the two rollers on the upper side of the shifter arm, screwing the studs into within about 1/64 inch of the sides of the clutch coupling. Lock the studs with the set screws and prick punch the heads of the set screws to prevent turning. 24. Assemble the hand throw pinion with its bronze collar on top of the main crank. Turn the pinion to 30

33 bring the tooth marked "R" for a right-hand movement, or "L" for a left-hand movement so it will mesh with the upper punch-marked tooth space on the hand-throw bevel gear. Push the pinion downward compressing the clutch spring sufficiently to bring the bevel teeth into engagement and rotate the hand throw gear and shaft so as to bring the large tooth on gear to the position where it will mesh with wide space on the clutch. 25. Replace top bearing with dowel pins, drawing it down securely with the four U inch cap screws. 26. Replace journal bearing key, washer, and castellated nut on top of the main crank, drawing the nut down securely and locking with the -h inch cotter Reassemble the top motor cut-out arm "X", pointing it toward the side on which the motor. cut-out yoke "K" has been located.

34 28. Readjust motor cut-out linkage as already described on page Replace selector lever so that the off-center hole in the hub of lever matches a similar hole in the shaft and secure with U inch bolt. 30. Replace hand throw lever on its shaft in line with set screw which holds the hand throw gear to the shaft. 31. Remove circuit controller cover. 32. Try out the motor mechanism and hand throw mechanism to check the assembly and see that both mechanisms are properly driving both the operating bar and the slide bar which moves the circuit controller. *33. Remove circuit controller and invert lock box "G" Fig. 4 providing reversible type lock rods are being used. (See page 9 for details). 34. Check to see that all lock washers and cotter pins have been properly applied. 35. Replace bottom pan "D" and top covers. *NoTE:-If the normal indication contacts as indicated on the circuit diagram are not closed when the mechanism is in the extreme position corresponding with full normal of the switch points to which the mechanism is to be applied, the cams on the circuit controller should be changed in accordance with instructions covering "Indication Circuit Con troller,'' Page

35 OPERATION Switch Operating and Locking Mechanism: The switch operating mechanism is illustrated in Figs. 11 to 14 inclusive and is composed of a main crank "X" ("J," Fig. 15), a switch operating bar "Y," and a slide bar "Z." The action of the mechanism when power is applied to the main crank is described below. Assuming that Fig. 12 shows the normal position, a reverse movement is started by a clockwise rotation of main crank "X." Lug "x 1 " on top of main crank "X" acting against roller "z 1 " on slide bar "Z" effects the unlocking of the lock rod by causing slide bar "Z" to move to the left one-half of its stroke. Meanwhile, roller "x" on the underside of main crank "X" is moved through an arc of 40 in the radial portion of groove "y" in switch operating bar "Y," thus freeing the bar for the reverse stroke. During the next 140 revolution of the main crank "X," roller "x" engages the straight reverse operating face of groove "y" and moves the switch operating bar "Y" to the reverse position. Fig. 13 shows the relative mid-stroke positions of switch operating bar "Y" and slide bar "Z;" crank "X" is still rotating clockwise but is not transmitting motion to slide bar "Z" as lug "x 1 " has become disengaged from roller "z 1." Surfaces "v" and "v 1 " of slide bar "Z" are radial to the center of the shaft and prevent the slide bar from moving. The full reverse position is shown by Fig. 14. Roller "x" on crank "X" acting in groove "y" has moved switch operating bar "Y" to the reverse position and secured it against back thrust; lug "x 2 " has come into contact with roller "z" during the last 40 rotation of crank "X," thus driving slide bar "Z" to its full reverse position. 33

36 SLIDE: BAR f) - --~ y --= =::::... -==-- SWITCH OPE:RATING BAR Fig. 11. Switch Operating Bar and Slide Bar (Inverted) y. t j I. I I I I I,";~_',,' I ' ' \ I I ','...,,, :,... - I z J a Fig. 12. Diagram of Driving Parts in One Extreme Position. 34

37 a 0 0 z a Fig. 13. Diagram of Driving Parts in Mid Position. a I ~ z a 35 Diagram of Driving Parts in Extreme Position op posite to that shown in Fig. 12.

38 .. Connection to the switch points may be made at either end of switch operating bar "Y" to suit the particular switch layout. The position of the switch points is checked and secured by the action of lock box "G", Figs. 3 and 4. The lock box "G" rests on and is operated from an extension of slide bar "Z" as shown in Fig. 8. Referring to Fig. 3 (b), dog "DD" on lock box "G" is moved out of the lower notch in the lock rod by the motion of slide bar "Z" (Fig. 12) during the firsc 40 rotation of crank '' X.'' The next 140 rotation of the crank operates the switch, and the lock rod moving with the switch points stops with the upper notch aligned to receive dog "BB." The final 40 rotation of the crank completes the stroke of slide bar "Z," driving dog "BB" into the upper notch of the lock rod to lock the switch points in the reverse position. Dual Control Mechanism: The dual control mechanism is so constructed and the selector lever and hand-throw lever so interlocked that (1) the selector lever may be thrown to the "Hand" operating position at any time regardless of the position of the switch and (2) the hand-throw lever is locked in either one or the other of its extreme positions when the selector lever is in the "Motor" position. The spring clutch coupling "A" Fig. 15 is moved up or down on crank shaft "J" by the selector lever through the means of shifter arm "E", it being splined to the main shaft "J" and therefore rotates with the shaft as a unit. The teeth on the lower member of the coupling engage with corresponding teeth on the worm wheel. These teeth are not selective and will engage with similar teeth on the worm wheel directly or as soon as the motor 36

39 TOP BEARING BUSHING MO TOA CUTOUT YOKE ZERK FITTING.. ', Fig. 15. Cross Section View of Gear Case for Style M-22 Movement. has moved the worm wheel sufficiently to bring the next tooth into alignment. The upper member of the spring clutch coupling is selective and if motor mechanism stops with the switch in reverse position and the hand throw. lever is in the normal position, the hand throw lever must be moved through an arc of 180 in order to bring the clutch teeth on the hand throw bevel gear into position where the spring can force the clutch into engagement. If the hand throw lever and the motor mechanism cor- 37

40 ....f'ci..utch!.hifter YOK,,...--~~----~~~I SELECTOR LEVER CAM SHA,T r---+-'--~ LOCKING ARM LOCKING GkAR Fig. 16. Locking between Clutch Shifter Yoke and Locking Gear. respond in position, the clutch will engage directly as soon as selector lever is thrown without compression of the spring and without any preliminary movement of the hand throw lever. The interlocking between hand throw and selector lever by which the selector lever in the motor position locks the hand throw lever in either the N and R position, and conversely, the hand throw lever in any position other than the extreme N and R locks the selector lever out of the motor position is illustrated by Fig. 16. A single notched locking gear which requires the handthrow lever to be returned to the full normal.position before throwing the selector lever to the power position is furnished when requested. In assembling this _locking gear the tooth marked "X" should be meshed with the lower punch marked tooth space on the hand-throw bevel gear for either a right hand or left hand movement where the switch points stand normally to the right. Likewise, the tooth marked "O" on the locking gear should be meshed with the hand-throw bevel gear in the same manner for either a right hand or left hand layout in which the switch points stand normally to the left. 38

41 INSTRUCTIONS FOR STYLE M-25 DUAL CONTROL ELECTRIC SWITCH AND LOCK MOVEMENT.. The Style "M-25" Electric Switch and Lock Movement differs only from the Style "M-22" Electric Switch and Lock Movement in that the Type "F" Switch Circuit Controller is included in the Switch Movement assembly as shown in Fig. 17. Maintenance instructions for the D.C. Circuit Controller will be found in Instruction Pamphlet U ' \ I I MOTOR Fig. 17. View of Style "M-25" Switch and Lock Movement. 39