US935050A - Door-operating mechanism for railway-cars. - Google Patents

Description

S. OTIS.

Dooe OPERATING MEcHANIsM Poe RAILWAY GARS.

APPLIU'ATIONFILED APR. 13, 1907. 935,050, Y Patented Sept. 28, 1909.

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APPLIOATION FILED APE. 13, 1907.

935,050. Patentedv sept. 28, 1909.

2 SHEETS-SHEET 2.

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SPENCER O'IIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL DUMP CAR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF MAINE.

DOOR-OPERATING- MECI-IANISIW FOR RAILWAY-CARS.

To all whom it may concern.'

Be it known that I, SPENCER Orts, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Door-Operating Mechanism for Railway-Cars, of which the following is a specification.

My invention relates to railway cars, especially to that type of dump car having dumping doors in its Hoor, and has for its object to provide a new and improved operating` and supporting mechanism for these doors.

In the accompanying drawing-Figure l is a transverse section through one of the dumping doors ofsuch a car, showing my improved operating and supporting mechanism, the door being in closed position. F 2 is a similar view, showing the door in its open position. Fig. 8 is a fragmentary view of part of the end of the car, showing the mechanism for rotating the door operating shaft, the parts being in the position assumed when the door is closed. Fig. l is a view similar to Fig. 3, but showing the parts in the position assumed when the door is opened.

As is well-known, side dumping cars of the i National type embody a fiat floor composed entirely, or substantially entirely, of dumping doors hinged in series on each side of the center sill. These doors are supported by a shaft extending longitudinally of the car, the doors being opened and closed and supported during their opening and closing movements by the operation of the shaft.

In the drawings, o indicates one of the hinged dumping doors, hinged as usual to or adjacent to the center sill at I).

c represents one of the transverse members of the underfran'ie.

(Z is a plate having a curved edge extending downwardly and inwardly in relation to the car underframe, this curved plate being formed with a rack tl, the teeth of which are spaced apart, as clearly indicated in the drawings. This rack is connected along its upper portion Z2 to the transverse member of the underfranie nea-r the outer end thereof. The rack plate is provided at its upper outer corner with a recessed portion cl3 and the end of the transverse member of the underframe is correspondingly recessed, form- Specificaton of Letters Patent.

Application led April 13, 1907.

Patented Sept. 28, 1909.. serial no. 368,058.

ing at the outer end of this transverse member an inwardly extending recessed portion. l t will be o-bserved that l provide on the end of the transverse member of the underframe a downwardly and inwardly extending rack. At the upper end of this rack I provide a horizontal inwardly extending portion by means of additional teeth tlf. The door snpporting shaft e, which travels upon the inclined track c fixed to the under side of the door, as is usual in this type of car, rests, when the door is in closed position, upon this horizontal inwardly extending portion of the rack, the shaft being provided with suitable gear wheels c engaging the rack, as will be readily understood.

Then in its closed position, the shaft forms a secure and etlicient supporting and locking device to hold the door in its closed position. The shaft is rotatably mounted in swinging arms f, which are hung from pivots f2 suitably connected to the underframe of the car, and these swinging arms are provided with slots f for a purpose presently to be described. The shaft may be operated by any suitable operating mechanism, as, for example, by suitable lever and ratchet wheels mounted upon the end of the shaft, such as disclosed, for example, in the patent to Caswell Reissue No. 12,447, reissued February 1G, 1906, or in the patent to @tis No. 780,759, of January 24, 1905.

Mechanism for operating the shaft c adapted for use with the structure above described is illustrated in Figs. 3 and 4f, The operating lever g is pivoted upon the shaft c and carries a reversible pawl z'. A detent is pivotally mounted Y upon the hanger j' and serves to restrain the shaft c against reverse movement when the same is being actuated by the lever g and pawl z'. lt will readily be apparent that in raising the door from the position shown in Fig. 4, the pawl z' will be turned to the position shown, thus engaging the pinion L which is fixed to the shaft e and the shaft will be rotated in clockwise direction. Nhen the'lever is thrownover to begin a new stroke the shaft c will be held against reverse rotation by the detent j, and as the pinions e upon the shaft c are in engagement with the rack teeth CZ the shaft and hanger f will be held against downward movement. The pinion la, of course, is constructed of suliicient width to permit the pawl z' and detent j to engage therewith without conflict. In its movement to lopen and close the doors, the shaft swings inwardly and outwardly, the gear wheels thereon traveling upon the outer face of the curved rack, being held in engagement therewith through the swinging links f. Then the door reaches its closed position, the shaft traveling over the horizontal upper part of the rack runs inwardly, this inward motion being `permitted by means of the slotted connection between the swinging arm and its pivot.

It will be seen that I have provided a very simple guiding and operating mechanism, in which the shaft is guided during its movements, and one in which the shaft forms a very etlicient supporting means for the door both in open and closed positions and during its movements.

l claim:

Il. A car comprising a hinged door, a` rotatable shaft mounted in a pivoted bearing, means for rotating said shaft, and means cngagiug said shaft to cause it to move bodily when rotated.

2. A car comprising a hinged door, a rack mounted in the car under-frame and provided with teeth on its under and upper surface, a rotatable shaft mounted in a movable bearing, a gear upon said shaft meshing with said rack, and means for rotating said shaft- 3. A car comprising a hinged door, a rotatable shaft mounted in a pivotcd and bodily movable arm, a rack having teeth on its under surface concentric with the pivot referred to and also having teeth on its upper surface, and a pinion on said shaft engaging said racl.

t. In a car, a hinged door, a rotatable. shaft mounted in a movable bearing, a support fixed to the ear underframe, means` causing said shaft when rotated to move out- 'ardly and upwardly beneath said door and inwardly between said door and support.

A railway car having a floor comprisingI hinged dumping doors, a swinging rotatable shaft mounted in the underframe of the car supporting and operating the doors, a down 'ardly curved rack having the horizontal upper portion secured to a transverse member of the underframe, a gear wheel on the shaft engaging the outer' face of the raclt, and means permitting the inward movement of the shaft when the door reaches its closed position.

(5. A railway car having a floor comprising hinged dumping doors, a plate attached to the underfraine, said plate being provided with a downwardly and kinwardly curved guide on its outer face and with a horizontal. upper port-ion, and a door operating shaft engaging the curved outer face of the guide during the opening and closing movements of the door and restingl on the horizontal portion of the guide when the door is in closed position.

7. A railway car having a floor comprising hinged dumping doors, a door operating and supporting shaft extending longitudinally of the car beneath the doors, slotted swinging arms in which the shaft is journaled, guide plates having a curved guiding face engaged by the shaft during the opening and closing movements of the door, and a horizontally supporting face engaged by the shaft when the door is closed. v

8. A, railway car having a floor comprising hinged dumpingdoors, a plate attached to the underfri me provided with a curved guide portion and a horizontal supporting portion, a door supporting and operating shaft, and means for holding the shaft in engagement with theV curved face of the plate during the opening and closing movements of the door and for permitting the inward movement of the shaft when the door is closed. I

t). A railway car having a floor comprising hinged dumping doors, a swinging rotatable shaft mounted in the frame of the car and engaging' the under face of the doors to open and close the doors, and positive means also mounted. in the underfraine for compelling the rotation of the shaft during the opening and closing movements of the door.

SPENCER UTS.

Vitnesses:

Guo. L. lViLnilNsoN, lV. T. .loNus

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