US1848845A - schaake - Google Patents

Description

March 8, 1932. w. SCHAAKE PANTOGRAPH COLLECTOR Filed Oct. 20, 1930 2 sheets-sh et l NVENTOR Wz/Zz'am Sc/make.

ATLFORNEY w. SCHAAKE PANTOGRAPH COLLECTOR Filed Oct. 20, 1930 2 Sheets-Sheet 2 INVENTOR William Sch flake.

' ATTORNEY cam 23 on the shaft 12 may be changed by means of two set screws 24. It will be ob served that a collar 25, which is keyed to the shaft 12 by two pins 26, is provided with a downwardly extending arm 27 and also an upwardly extending arm 28. The cam 23 is rotatably mounted on the shaft 12 and is retained on the shaft by a ring 29 which is keyed to the shaft 12 by a pin 31. The cam 23 is provided with a downwardly extending arm 32 which is disposed between two outwardly projecting lugs 33 on the arm 27 of the collar 25. The set screws 24 are mounted in the lugs 33 to engage the arm 32 of the cam 23. In this manner, the position of the cam 23 on the shaft 12 may be changed by adjusting the set screws 24:.

As shown in Fig. 2, equalizing rods 34 are provided to ensure that the two shafts 12 shall be rotated to the same degree. One end of the rod34 is connected to the arm 28 of the collar 25, and the other end is connected to thelever arm 19 which is actuated by the air cylinder 18. One equalizing rod is provided at each sideof the pantograph frame.

It will be seen that the force exerted by the auxiliary springs 21, tending to raise the pantograph frame and also the pressure of the collecting shoes 14 against the overhead conductor, may be governed by changing the position of the cams 23 on the shafts 12 by means of the set screws 24. Changing the position of the cams 23 Varies the tension of the springs 21 and also varies the moment of the torque applied by the springs to rotate the shafts 12.

the above-described construction, and dif-- f erent embodiments of the invention may be made without departing from the scopet l 1 ereof, it is desired that all matter contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

I claim as my invention:

I 1. In a pantograph collector, in combination, a supporting frame, a plurality of rotatable shafts carried by said frame, a pantograph frame mounted upon said shafts, a collecting shoe carried by the pantograph frame, means biased by springs for raising the pantograph frame, means actuated by fluid pressure to lower the pantograph frame, and adjustable-cam means for varying the force exerted by the spring-biased means for raising the pantograph frame.

2. In a pantograph trolley for collecting current from a trolley conductor, in combina: tion, a pantograph frame, a plurality of shafts for supporting said frame and for actuating the same when rotated, a plurality of cams mounted upon and rotating with said shafts, a plurality of springs connected to the cams and disposed to rotate the shafts to actuate the pantograph frame in one direction, means actuated by fluid pressure to 1'0- tate the shafts to actuate the pantograph frame in the opposite direction, and means for adjusting the position of the cams on the shafts forvarying the tension of said springs to vary the force exerted on the pantograph frame.

3. In a pantograph trolley for collecting current from a trolley conductor, in combina tion,. a pantograph frame, a plurality of shafts for supporting saidframe and for actuating the same when rotated, a plurality of cams mounted upon and rotating with said shafts, a plurality of springs connected to the cams and disposedto rotate the shafts to raise the pantograph frame, means actuated by fluid pressure to rotate the shafts to lower the pantograph frame, and means for varying the position of the cams on the shafts to vary the force applied by the springs.

4. In a pantograph trolley for collecting current from a trolley conductor, in combination, a pantograph frame, a collecting shoe carried by the frame and disposed to make contact with the trolley conductor, a plurality of shafts for supporting said frame and for actuating the same when rotated, a plurality of cams mounted upon and rotating with said shafts, a plurality of springs connected to the cams and disposed to rotate the shafts to raise the collecting shoe into engagement with the trolley conductor, a plurality of mechanisms actuated by fluid pressure to rotate the shafts to lower the collecting shoe, and means for adjusting the position of certain of said cams on the shafts to change the tension of certain of said springs, thereby varying the :rent from a trolley conductor comprising a supporting frame, a pantograph frame,

pressure between the collecting shoe and the spring means for raising the frame, fluid,

pressure means for lowering the frame, and means for varying the force exerted by the spring means, whereby the pantograph frame may be utilized for supporting one or a plurality of current-collecting shoes.

6. A pantograph trolley for collecting current from a trolley conductor comprising a supporting frame, a pantograph frame, a plurality of rotatable shafts for supporting the pantograph frame, a plurality of cams mounted upon and rotating with said shafts,

a plurality of springs connected to the cams and disposed to raise the pantograph frame, mechanisms; actuated by fluid-pressure to 7 lower the pantograph frame, and means for 7 changing the position of certain of said cams on the shaft to vary the force exerted by certain of said springs, whereby the pantograph frame may be utilized to support one or a plurality of collecting shoes. 7 v 7. In a pantograph trolley for collecting 10 current from a trolley conductor, in combination, apantograph frame, a plurality of rotatable shafts for supporting the panto graph frame, aplurality of cams mounted upon androtating with the shafts, a plurality of springs connected to the cams and dis posed to apply a torque to rotate the shafts, and means'for adjusting the position of the cams on the shafts to Vary the torque applied by the springs. 77

In testimony whereof, I have hereunto subscribed my name this th day of October,

1930. V s I WILLIAM SGHAAKE.

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