USRE13362E - Door-operating device for cars - Google Patents

Description

A. CHRISTIANSON.

Doon OPERATING DEVICE Fon ons.

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INVENTOR. A2M @4114..

Bessued'Jan. 16, 1912.

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A. CHRISTIANSON. noon OPERATING DEvIcB ron was. APPLIUATIOH FILED JUFBB, 1911.

Raissued Jan.16,1912.

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UNITED STATES PATENT OFFICE ANDREW CHRISTIANSON, OF BUTLER, PENNSYLVANIA, ASSIGNOR T STANDARD STEEL CAB COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

DOOBFOPERATING DEVICE F03 CARS.

ong-m1 No. 941,793,

Specioation of Reissued. Letters Patent. Reissued J an. 16, 1912.

To all whom it may concern:

Be it known that I, ANDREW CHRISTIAN- soN, a citizen of the United States, residing at Butler, county of Butler, and State of Pennsylvania, have invented a new andl useful Door-O erating Device for Cars, of which the fo lowin is a specification.

My invention re ates to car-door operatinmechanism. Y

he object of my invention is to provide a door operating mechanism for hopperbottom or other cars in which there are downwardly opening doors, its object being to provide for the uick and eiiicientoperation of the doors without any manual labor, and at the same time so support the doors that the strain on the operating mechanism is relieved when the doors are closed.

To these ends my invention comprises, generally stated, a downwardly swinging car-door, a iiuid operated cylinder, flexible connections, a locking member carried by said flexible connections, and means for releasing and securing said locking member by the movement of the piston o said cylinder. v

In the accompanying drawings Figure 1 is a longitudinal section of a car with my invention applied thereto; Fig. 2 is a like plan view, partly broken away to show the arts; Fi 3 is a section on the line (B3-3) Eig. 2; Fg 4 is an enlarged detail; ig. 5 is an enlarged detail plan view.

I have ilustrated my invention in connection with a hopper-bottom car composed of the sides 2 and end floor plates 3, the hoppier plates 4, the sills 5 and the holsters 6. hese features, however, form no part of my present invention, and my improved door operating mechanism may be applied to any suitable construction of car. In the form of car illustrated, the doors 7 extend longitudinally of the car, and open downwardly, said doors being engaged at 8 to the car-body. These doors-are braced and strethened by pressingwribs thereon and in er ways, as may desired to give them the necessary durability. The chains or like liexible connections 9 and 10 are connected to the outer ends of the doors as at 11. The chains 9 connecting u with the door at one side of the car and tiie chain 10 with the door at the op site side. As the operating parts are dup icated at each end of the car, I have employed the same reference numerals for the duplicate part-s. The chains 9 Vand 10 pass over` sheaves or drums 12 and 13 the sheaves 12 being mounted in the sills 5, and the sheaves 13 being mounted in the struts 14. The cover-plate 15 is provided with the opening 16 through which the chains 9 andlO pass to the points where the are connected to the doors.

onnected to the chains 9 and 10 is the locking-member 17 which may be composed 0f the casting 18 having the lugs 19 to receive the ends ofthe chains 9 and 10, and

to which said chains are secured. The locking-member 18 is provided with the trunnions 20 which are adapted to enga e abutments or shoulders 21 on the braclrets 22, which are bolted or otherwise secured to the cover-plate 23 on the sills 5. The brackets 22 extend to a point adjacent to the sheave 13 and the upper edges of said brackets form a support orl guide for the trunnions 20 when,the locking-member 18 is released andL ,said locking member is drawn toward the sheave 13 when the door is open. The chain 24 is connected to the locking-member 18 and said chain passes around the sheave 25 and is secured at its opposite end to the support 26 bolted to the cover-plate 23. The sheave 25 is mounted in the clevis-end 27 of the piston-rod 28. The flanges 29 of the sheaves 25 are adapted to engage the hubportions 30 of the casting 18 of the lockingmember for the purpose of releasing sa1d locking-member as fully hereinafter set forth. The piston-rod 28 has the piston 31 which moves in the cylinder 32, which is supported in any suitable mannerfor as illustrated, upon the sills 5. ' Pipes 33 and 34 lead to opposite ends ofthe cylinder 32 and said pipes are carried around to the side of the car where they are connected up to `the pipes 35 and 36, connections from pipes 35 and 36 being made atabout a mid-portion' of the car, so that the motive Huid will have an equalV distance to travel in passing ,to the cylinders 32 at the opposite ends of the car, and providing for the simultaneous operation of the pistons. A 4way valve 37 is provided which is connectedup to the supply-pipe 38.

When my invention desired to open lading, the Valve 1s 1n use, and it is the doors to discharge the 37 is operated to direct the shoulders 21. Just Aas soon as, the locking members have been raised sufficiently to free the trunnioned portions 20, the weight of the lading bearing against the doors of the car will draw the locking-member forward., together with the sheave 25, and the pistons,

Ethe doors dropping to the position indicated in dotted lines, Fig. 3. rI`he only power required to operate the device is that required to move the sheave 25 sufficiently to release the locking-member when the weight of the lading supplies the necessary power to open the doors to the full extent. When it is desired to close the doors, the valve 37 is operated so as to admit the fluid to the front end of the cylinder 32 through the pipe 34, the exhaust taking place through the pipe 33. The return movement of the piston will act to draw up the doors to their closed position, and their` locking-member will be moved back into position so that its trunnioned portion engages the shoulder 2l and just as soon as thattakes place, the weight of the doors, together with the lading is carried by the locking-member and the stra-in of supporting the doors in no way falls on the cylinder 32, so that no motive fluid is required to hold the doors in their closed position.

It is obvious that many changes may be made in the parts of my invention which will not affect its broad scope, and- I Wish to include any such changes or modifications which are clearly Within the broad scope of the claims.

What I claim as my invention is:

1.- In a car-door operating mechanism, the combination of a swinging door, a fluid operated cylinder, flexible connections between said door and cylinder, a locking-member carried -by said flexible connections, and means for releasing said locking-member by the movement of the piston of said cylinder.

2. In a car-door operating mechanism, the combination of a swinging door, a fluid operated cylinder, flexible'connections between said door and cylinder, a locking-member carried by said flexible connections porting the entire weight ofA the doors, and means for releasing said locking-member by the movement of the piston of said cylinder.

3. In a car-door operating mechanism, the combination of a swinging door, a fluid'operated cylinder, flexible connections between said door and cylinder, a locking-member and sup'- carried by said flexible connections, an abutment with `which said locking-member engages, and means for releasing said lockingmember by the movement of the piston of said cylinder.

4. In a car-'door operating mechanism, the combination of a swinging door, a fluid voperated cylinder, flexible connections between said door and cylinder, a trunnioned locking member carried by said flexible coni nections, an abutment with which said locking-member engages, and means for releasing said locking-member by the piston of said cylinder.

5. In a car-door operating mechanism, the combination of a swingingA door, a movable sheave, flexible connections attached to said door and engaging said sheave, a fixed abutment, a locking-member carried by said flexible connections engaging said abut- *ment and means for releasing said lockingmember by the movement of said sheave.

6. In a car-door operating mechanism, the combination of a swinging door, a movable sheave, flexible connections attached to said door and engaging said sheave, a fixed abutment, a locking-member carried by said flexible connections engaging said abutment, said locking-member'being in the path of movement of said sheave.

7 In a car-door operating mechanism, the Acombination of a swinging door, a movable sheave, means for moving same, flexible connections attached to said door and engaging said sheave, a fixed abutment, a locking- 100 member carried by said flexible connections engaging said abutments and means for releasing said locking-member by the movement of said sheave. l

8. In car-door operating mechanism, the 105 `combination of a swinging door, a movable sheave, flexible connections attached to said Edoor and engaging Vsaid sheave, a fixed abutment, a locking-member carried by said flexible connections engaging said abutment, 110 means for moving said sheave, and said `locking-member being engaged by the flange of said member.

9. In a car-door operating mechanism, the combination of a plurality of swinging doors, a fluid 4operated cylinder, a. lockingmember, flexible connections leading from opposite doors to said locking-member,- a sheave, flexible connections from the other side of said locking-member, passing around said sheave, connected to a permanent support, connectionsl between said sheave and piston of said cylinder, and means for releasing said locking-member by the movement of said sheave.v

10. In a car-door operating mechanism, the combination of a swinging door, a fluid operated cylinder, flexible connections between said door and cylinder, a locking- 13,0

sheave to release said locking member carried by said flexible connections, a movable sheave, connections between said sheave and piston of said cylinder, and means for releasing said locking-member by the movement of said sheave.

11. In a car-door 'operating mechanism, the combination of a'swinging door, a Huid operated cylinder, iexible connections between said door and cylinder, a lockingmember carried by said exible connections a movable sheave, connections between said sheave and piston of said cylinder, said locking-member being in the 'path of movement of said sheave.

12. In a car-door operating mechanism, the combination of a swinging door, flexible connections attached to said door, a lockingmember carried by said exible connections,

Copie! of this patent may be obtained for ve cents each, by addressing the Commissioner of Tatents,

trunnions on said locking-member, a support having an abutment with which said trunnions engage, and guides on said support with which said trunnions engage when said locking-member is released.

13. In a car-door operating mechanism, the combination of a swinging door, flexible connections attached to said door, a lockingmember carried by said flexible connections, trunnions on said locking-member and a support having an abutment with which said trunnions engage, said trunnions engaging the upper edges of said support when said locking member is released.

ANDREW CHRISTIANSON.

Witnesses:

H. J. HAmmN, EUGENE MCCAFFERTY.

Washington, D. C.

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