US1140951A - Trap-door for railway-car platforms. - Google Patents

Description

E. F. GHAFFEE. TRAP DOOR FOR RAILWAY CAR PLATFORMS,

APPLlCATlON FILED MAR. 13, 1915.

Patented May 25, 1915.

INVENTOR WITNESSES:

ATTORNEYS THE NORRIS PETERS CO. r .JTO-LITHQ. WASHING TON, B4 c.

4 SHEETS-SHEET 2.

E. F. CHAFFEE.

APPLICATION FILED MAR. 18, I915.

Patented May 25, 1915.

INVENTOR ATTORNEYS TRAP DOOR F OR RAILWAY CAR PLATFORMS.

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WTTNESSES:

/ I flu E. F. CHAFFEE. TRAP DOOR FOR RAILWAY CAR PLATFORMS.

APPLICATION FILED MAR. 18, 1915.

Patented May 25, 1915.

4 SHEETS-SHEET 3.

INVENTOR wwmssas;

LA/MC ATTORNEYS THE NORRIS PETERS Co., F'HDTO-LITHQ. wAsHlNGmN. D. c.

E. F. CHAFFEE.

TRAP DOOR FOR RAILWAY CAR PLATFORMS. APPLKCATION FILED MAR."18,19\5.

1 1%35 1 o Patented May 25, 1915,

4 SHEETS SHEET 4.

WiTNESSES: INVENTOR ATTORNEYS THE NORRIS PETERS 60.. PHOTO-LITHO., WASHINGTON. D C.

UNITED STATES PATENT OFFTCE.

EDWARD F. CHAFFEE, OF SYRACUSE, NEW YORK, ASSIG-NOR TO THE 0. M. EDWARDS COMPANY, INC., 015 SYRACUSE, NEW

YORK, A CORPORATION OF NEW YORK.

TRAP-DOOR FOR RAILWAY-CAR PLATFORMS.

ma am.

Application filed March 18, 1915.

To all whom it may concern:

Be it known that I, EDWARD F. GHAFFEE, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga and State of New York, have invented a certaln new and useful Trap-Door for Railway-Car Platforms, of which the following is a speclfication.

This invention relates to trap doors for railway car platforms and particularly to trap doors which are capable of being projected laterally beyond the sides of the cars to bridge the space between the cars and station platforms elevated into a position nearly flush with the car platforms, and the invention has for its object means movable with the trap door to bridge the space between the inner edge of the trap door and the platform floor when the door is pro ected outwardly, and means connected to the former means to project the door outwardly.

Other objects will appear throughout the specification.

The invention consists in the combinations and constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings, in which like characters designate corresponding parts in all the views.

Figure 1 is a plan view, partly in section, of a trap door embodying my invention a contiguous part of the car being shown in section, and the flooring of its platform being removed. Fig. 2 is a sectional view on the plane of line A-A, Fig. 1 the door being shown as in its open position. Fig. 1s a plan View similar to Fig. 1, the door being shown as projected axially. Fig. 4 is a detail view looking to the left in Fig. 2 with the door removed, showing particularly the slide located in the cavity at the top of the platform steps. Fig. 5 is an enlarged detail view illustrating the ledge on the hinge bracket for supporting the advance portion of the door when the door is projected axially.

1 designates the car platform.

2 is the trap door which is hinged at one side of the door opening and which is movable axially of its hinge to project its outer portion 3 beyond the side face 4 of the car.

5 is means as a slide movable with the door Specification of Letters Patent.

Patented May 25, 1915.

Serial No. 15,189.

2 as it is moved axially, the slide being located at the inner edge of the door in position to form an extension of the trap door and bridge the space between the trap door and the platform when the door is projected axially, this slide telescoping with the plat form at the top of the riser 6 of the top step.

The door 2 is hinged to the platform in any well known manner, it being here shown as carried by parallel levers 7 pivoted at 8 at their inner ends to bearings 9 mounted on a spring barrel 10 which is journaled at its ends in brackets 11 and 12 carried by the platform. The parallel levers 7 are connected at their outer ends to the underside of the door by pins 13 extending through the slots 14 in the ends of the arms 7 During axial shifting of the door, the levers move on their pivots in parallelism and guide the door in its sliding movement. A suitable torque spring, not shown, is located within the barrel 10 and fixed at one end to one of the bearings 11. and 12, and at its other end to the barrel to turn the same in the usual manner.

The front edge of the door, that is, the free edge,

normally rests on a ledge 15 formed on a strip 16 secured to the car structure. The strip 16 extends nearly to the side face of the car beyond which the trap door can be projected, and hence the door at its free edge is supported practically to said side face of the car. The rear portion of the door is supported by the hinge.

In order that the rear edge of the door near the hinge may be supported near the side face 4 of the car when the door is projected axially, with a bearing face or ledge 17 upon which the advance portion of the edge of the door near the hinge rests when the door is pro jected outwardly as seen in Fig. 5. Hence the door is supported at both edges to nearly the side face of the car.

The slide 5 preferably moves into and out of a cavity 18 located in the platform and rests on the ledge 15. The slide 5 and door are provided with coupling means which automatically disconnect during the opening of the door and coact as the door approaches its closed position. As here shown, the slide 5 is provided avith shoulders or butthe bracket 12 is provided door may not tons 19 which engage or interlock with complemental sockets 20 at the inner edge of the door 2, these sockets opening through the lower face of the door or flooring thereof. The slide 5 is preferably formed of sheet metal and rides on the edges of angle iron braces 21 on the bottom of'the'cavity 18, and is formed with a downturned margin 22 at its front edge which extends in front of a flange 23 projecting upwardly from the riser 6 of the top step, and closes the front end of the cavity 18.

The operating means for projecting the door outwardly and returning it to its normal position is connected to the slide 5 so that the motion is transmitted through the slide. Said means comprises a vertical rock shaft 24: on the platform 1 having a rock arm 25 at its lower end within the cavity 18 and a handle 26rat its upper end, the rock arm 25 being connected by a link 27 to the rear edge of the slide 5. The handle 26 is here shown as foldable and as in its collapsed position in Fig. 2. By operating the rock shaft 24.- in one direction obviously the slide will be moved outwardly pushing the door therewith and during the movement of the handle in the opposite direction, the slide will be pulled into the cavity 18 drawing the door to its normal position.

This trap door is, in many instances, used with vestibule doors designated by the numeral 28 and in order that the vestibule be closed in case the porter or trainman neglects toreturn the trap door to its normal position, means is provided for preventing the closing of the vestibule door in order to remmd the porter or trainman to return the trap door to its normal position. In this embodiment of my invention, said means comprises a stop 29 on the trap door near the free edge thereof, the stop being arranged in position so that it is normally out of the path of the opening and closing movement of the door 28 and moves into said path when the door is projected axially as indicated in dotted lines in Fig. 1.

What-Iclaim is 1. The combination with a railway car platform, of a trap door movable laterally beyond the side of the car, a slide located at the inner edge of the door to bridge the space between the platform floor and the door when the door is projected outwardly from its normal position, and means for moving the door and the slide, said means being connected to the slide, substantially as and for the purposedescribed. I

2. The combination with a railway car platform, of a trap door movable laterally beyond the side of the car, an extension located at the inner edge of the door to bridge the space between the platform floor and the door when the door is projected outwardly from its normal position, and means wardly from its normal position, and operating means connected to the slide to movethe door axially, substantially as and for the purpose set forth. Y

l. The combination with a railway car platform, of a trap door hinged tothe platform at one side of the door opening and slidable in a direction axially of its'hinge,

an extension located at the inner edge of the door to bridge the space between the platform and the door when the door is moved axially outwardly from its normalposition, and operating means connected to the extension to move the door axially, substantially as and for the purpose described.

5. The combination with a railway car platform, of a trap door hinged to the plat-. form at one side of the door opening and slidable in a direction axially of its hinge, a slide located at the inner edge of the door to bridge the space between the platform and the door when the door is moved axially outwardly from its normal position, means coupling the door and the slide and acting to disconnect the opening of the door on its hinge, and operating means connected to the slide, substantially as and for the purpose specified.

6. The combination with a railway car platform having a cavity therein, of a'trap door shiftable outwardly beyond the side of the car, a slide associated with the door 7. The combination with a railway car platform formed with arcavity, of a trap door hinged to the platform at one side of the door opening, and slidable in a direction axially of its hinge, a slide movable into and out of the cavity, the door and slide having means-movable out of and into interlocking engagement during the opening and closing of the door, and operating means for sliding the door axially and moving the slide there with, said means being connected to the slide to operate the door through the slide, substantially as and for the purpose described.

8. The combination with a railway car platform, ofa trap door hinged to the platform at one side of the door opening and slidable axially of its hinge, aslide located at the inner edge of the door tovbridge the space between the door from the slide during the platform and the door i when the door is shifted axially outwardly from its normal position, and operating means connected to the slide to move the door axially, said means comprising a rock arm connected to the slide, substantially as and for the purpose specified.

9. The combination with a railway car platform, of a trap door hinged to the platform at one side of the door opening and slidable axially of its hinge to project a portion thereof beyond the side of the car, and a bearing surface located near said side of the car and the axis of the hinge for supporting the door when the door is projected axially, substantially as and for the purpose set forth.

10. The combination with a railway car platform, of a trap door hinged to the platform at one side of the door opening and slidable in a direction axially of its hinge to project a portion thereof beyond the side of the car, and a bracket supporting the hinge, the bracket being located near said side of the car and formed with a ledge and the door having a portion thereof extending to the rear side of the hinge, said portion being movable into a position to bear on the ledge when the door is projected axially, substantially as and for the purpose described.

11. The combination with a railway car platform, of a trap door hinged to the platform at one side of the door opening and slidable in a direction axially of its hinge to project a portion thereof beyond the side of the car, a bearing surface on which the free edge of the door slides, said surface extending to said side of the car, and means located near said side of the car and having a bearing surface arranged to receive the opposite margin of the door when the door is projected axially, substantially as and for the purpose specified.

12. The combination with a railway car platform, of a trap door hinged to the platform at one side of the door opening and slidable in a direction axially of its hinge to project a portion thereof beyond the side of the car, and means located near said side of the car and near the axis of the hinge for supporting the side edge of the door nearest the hinge when the door is projected axially, substantially as and for the purpose set forth.

13. The combination with a railway car platform and a vestibule door, of a trap door slidable outwardly, and means associated with the trap door for preventing the closing of the vestibule door when the trap door is in its outward position, substantially as and for the purpose described.

14. The combination with a railway car,

platform and a vestibule door, of a trap door slidable outwardly beyond the side of the car, the trap door having a shoulder thereon normally out of the path of the opening and closing movement of the vestibule door and movable into said path when the trap door is projected outwardly, substantially as and for the purpose specified.

In testimony whereof, I have hereunto signed my name in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga, and State of New York, this 28rd day of February, 1915.

EDWARD F. CHAFFEE.

lVitnesses S. DAVIS, J. GLAZIER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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