US781358A

US781358A - Door-operating mechanism.

Info

Publication number: US781358A
Application number: US23145404A
Authority: US
Inventors: Rafford Pitt; Myron Cossey
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-11-04
Filing date: 1904-11-04
Publication date: 1905-01-31
Anticipated expiration: 1922-01-31

Description

No. 781,358. PATENTED JAN. 31, 1905.

v v R. PITT & M. GOSSEY.

- DOOR OPERATING MECHANISM.

APPLICATION FILED NOV. 4. 1904. v

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INVENTORS ATTQRN No. 781,358. PATENTBD JAN. 31, 1905.

R. PITT & M. OOSSEY.

DOOR OPERATING MECHANISM.

APPLICATION FILED HOV. 4, 1904.

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ATTORNEY No. 781,35.8. PATENTEDIAN.-31;1905.

- S R. Pm? & M. GOSSBY. I

DOOR OPERATING MECHANISM.

APPLICATION FILED HOV. 4, 1904.

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v I 7 7 f WITNESSES:

H INVENTAILSZ BY fa/an? ATTORNE 1'0 all whom, it mag concern.-

" UN TE STATES;

RAFFO'RD PITT, OF 'NEW Patented. Ianuary 31, 1905..

PATENT OFFICE DOOR-OPERATING MECHANISM.

SPECIFICATION forming part of Letters Patent 1\Io. 781,358, dated January 31 1905. Application filed November 4,1904. Serial No. 231,454.

Be it known that we, RAFFoRD PITT, residing at New Rochelle, in the county of Westchester,

and MYRON (JossEY, residing in the borough of Brooklyn, in the county of -Kings, State'of New York,both citizens of the United States,

'have invented certain new and useful Improvements in Door-Operating Mechanism, of which the following is a full, clear, and exact specification. v The invention herein described relates to improvements in door-operating mechanism for suspended sliding doors or gates, such as those used on car-platforms, where the said mechanism engages the shdlng door or gate in approximately the horizontal plane of its transmitted through a complicated series of angular levers,one extremity of whichwas} pivoted on the horizontal lever and the other extremity connected to a rocking shaft supported on the car-body. The large number of parts contained in such series of levers,

especially the large number of pivotalconnections, unavoidably causes much friction and renders it more difiicult to open and close the car-door.

One object of our invention is to provide a.

simpler arrangement of levers for transmitting the motion to'the horizontal lever which engages directly with the door.

Another object of our invention is to provide improved operating mechanism for re volving the rocking shaft to which the series of angular levers referred to is connected.

In the drawings we have shown our invention inuse with sliding mechanism supporting the inner end of the horizontal lever which engages the door. This sliding mechanism Serial No.= 231,602. The uses and advantages of the'said sliding mechanism and its method of operation are fully described in the said ap- I plication of Myron Oossey and need not here be repeated in detail.

In general terms our invention comprises operating mechanism for a suspended sliding door, which mechanism engages the same in approximately the plane of its line of suspension, said operating mechanism consisting of a horizontal lever attached to the roof or hood of the platform, so as to have limited longitudinal movement and free pivotal movement, in combination with a series of angular levers connected at one extremity to said horizontal lever and at the other extremity to-a vertical rocking shaft which has segmental cog engagement with a horizontal rocking shaft and suitable operating mechanism connected with said horizontal rocking shaft.

Our lnvention is fully shown in the accompanying drawings, in which similar figures 'refer to similar parts.

' Figure 1 in the drawings is a horizontal sectionof a portion ofa car-body, taken on the plane of the line 1 1 of Fig. 2. Fig. 2isan end view of a portion of a'car, showing the operating mechanism. Fig. 3 is avertical section of the same, taken on the plane of the line 3 3, Fig. 2. Fig.4 is a detail horizontal section of the operating mechanism, taken on the plane of the line 4 4: of Fig. 5 looking in the directionof the arrow. Fig. 5 is a vertical section of the same, taken on the plane of the line 5 5ofFig. 3 looking in the direction of the arrow; I 1

A is the roofor hood. of the car-platform. B is the outer end of the platform. C is the sliding door suspended overhead in any suitable or well-known manner.

horizontal plane, passing through its line of suspension. The other end of the lever D is guided and supported by plate E and rails Gr,

L, and L and plate K and bolts d a and the of the lever D which is thus pivoted to the plate E slides back and forth longitudinally a limited distance and moves freely in a pivotal motion about the pivot F, which itself slides back and forth with the rail G and plate E.

J is an angle-iron supported in the roof of the platform.

0 is a brace for angle-iron J.

It will be seen that the distance between the pivot F and the pivot m, by which the lever D is attached to the rest of the operating mechanism, is always the same. In other Words, the length of the shorter arm of the lever D, being the distance from the fulcrum F to the point 072, where'the power is applied, is uniform, both of them being movable instead of being fixed. Consequently there is no tendency for the lever to become set on a dead-center nor for the door to stick when opening and closing.

0 is a pitman-lever pivoted at one end to the horizontal lever D and at the other end to one end of a connecting-lever R. The other end of said connecting-lever R is rigidly attached to a vertical rocking shaft Q, supported by a bracket a projecting from the car-body and its upper end turning freely in a socket 6, formed upon the roof or hood of the car. The lower portion of the vertical rockingshaft Q has projecting from it a segmental lever provided with cogs which engage With cogs on a similar segment attached to a horizontal rocking shaft supported on the end of the car-body and passing through the same.

On the outer end of the car-body is a bellcrank lever T, pivoted at o, with which is connected a pitman-lever V, pivoted at w to one arm of the bell -erank lever T, and at its other end pivoted at w to an operating-arm W, rigidly connected With the horizontal rocking shaft P.

X is a handle upon the end of the lever T.

The operation of the mechanism described is as follows: The operator standing on the platform presses down the handle X of the hand-lever T. This throws out the short arm of the hand-lever and with it the pitman-lever V, which correspondingly pushes up the lever W, which in its turn revolves the rocking shaft P. As the handle X descends the rocking shaft P transmits the motion to the vertical rocking shaft T, which turns on its axis carrying with it the lever B, which pushes on the lever 0, thus carrying the motion to the horizontal lever D and in turn pushing upon the door. As these motions continue the door slides from the closed position to the open position, the inner end of the lever D moving with the sliding mechanism on which it is pivoted into its extreme open position, (indicated by dotted lines in Fig. 1.) When it is desired to close the door, the handle X is raised and the motion of all the parts is reversed. The door is locked in the closed position by pushing the handle X well over until it comes in contact with the pitman-lcver V.

In practice the described apparatus would be duplicated at the opposite side of the platform and each car-platform would be similarly provided with a set of sliding doors and devices for operating them. The trainlnau standing in the usual way, with his feet on the two abutting platforms, can open both sliding doors from the same side at once. The doors slide back into the car,suitablc space being provided for that purpose, as shown. The door is shown as suspended near the top, as is usually the ease. Experience has shown that the best way to operate doors of this sort is by applying the operating force along a line approximately parallel to and in substantially the horizontal plane of the line of suspension. It will be noted that the door-operating mechanism for each door engages the door in approximately the horizontal plane through the line of suspension of the door and that the course of the arm which engages the door is or may be in a direct line with the slide of the door itself, whereby, in conjunction with the sliding mechanism herein referred to, all jamming or pinching of the door in its travel is obviated. Moreover, the door-operating mechanism is so placed or located in respect to the car, the side passage-way, and all moving parts of the car mechanism that its operation does not in any way interfere with the structural arrangement of the car or the operation of its moving parts or the convenience of the passengers.

We do not broadly claim operating mechanism for a suspended sliding door which ongages the door in the plane of the line of suspension, which operating mechanism consists of a series of levers connected with a horizontal lever, one end of which engages the door and the other is so attached to the door or roof of the platform as to have limited longitudinal and free pivotal motion, as we are aware that mechanism accomplishing this result is already in use; but

What we do claim, and desire to secure by Letters Patent, is-

1. In the platform of a street or railway car having a suspended sliding door, operating mechanism for said door, engaging the same in approximately the horizontal plane of its line of suspension, said operating mechanism consisting of a horizontal lever attached to the roof or hood of the platform so as to have limited longitudinal movement and free pivotal movement; in combination with a series of angular levers connected at one extremity to said horizontal lever and at the other extremity to a vertical rocking shaft which has segmental cog engagement with a horizontal rocking shaft and suitable mechanism connected with said horizontal rocking shaft, substantially as described.

2. In the platform of a street or railway car having a suspended sliding door, operating mechanism for said door, engaging the same in approximately the horizontal plane of its line of suspension, which operating mechanism consists of a horizontal lever so supported on the roof or hood ofthe platform as to have limited longitudinal and, freepivotal movement; in combination with a pitman-lever pivoted at one end to said horizontal lever and at the other end to a connecting-lever which is rigidly attached to and turns with a vertical rocking shaft supported on the carbody; segmental cog connections between'said vertical rocking shaftand a horizontal rocking shaft; and a compound operating-lever located at the outer end of the car-platform and connected with said rocking shaft, substantially as described.

3. In the platform of a street or railway car having a suspended sliding door, operating mechanism for said door, engaging the same in approximately the horizontal plane of its hne of suspension, said operating mechanism consisting of a horizontal lever so supported on the roof or hood of the car-platform as to have limited longitudinal and free pivotal movement, a pitman-lever pivoted at one of its ends to the saidhorizontal lever and at its other end to a connecting-lever which is rigidly attached to a vertical rocking shaft suitably supported on the car-body, the said rocking shaft having cog connections by segmental levers with a horizontal rocking shaft rigidly supported on said car-body; and a compound operating-lever on the outer end of the car-platform, consisting of a bell-crank hand-lever, a pitman-lever having pivotal connection with the shortsarm of said handlever, and the operating-lever pivoted at one end on the pitman-lever. and at the other end 7 rigidly connected with the horizontal rocking shaft, substantially as and for the purposes set forth.

RAFFORD PITT. MYRON OOSSEY.

Witnesses:

H'. M. CooMEs, E. T. SANFORD.