US623282A

US623282A - Car-door

Info

Publication number: US623282A
Authority: US
Publication date: 1899-04-18
Anticipated expiration: 1916-04-18

Description

Patentd Apr. l8, I899.

G. P. JONES.

CAB DOOR.

(Application filed Oct. 18, 1897.)

"in Model.)

'UNlTF STATES PATENT Fries.

GRAHAM P. JONES, OF CHICAGO, ILLINOIS.

CAR-DOOR.

SEECIFICATION' forming part of Letters Patent No. 623,282, dated April 18, 1899.

Application filed October 18, 1897. Serial No. 655,506. (No model.)

To all wit/0117, it may concern:

Be it known that I, GRAHAM P. JONES, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Doors, of which the fol lowing is a specification' 7 My invention relates to car-doors, and particularly to that class of car-doors'in which apparatus is provided for raising and lowering them upon cam-brackets which operate when the door is lowered to throw it over into engagement with the side of the car, binding it firmly in place and preventing it from undue movement whether the door be open or closed.

The object of my invention is to provide certain improvements in car-doors of this description, which object I accomplish as illustratedin the drawings and as hereinafter set forth. v

Referring to the di awings, Figure 1 is a partial side view of a car, illustrating my improvements. Fig. 2 is an enlarged vertical section on line 2 2 of Fig. 1. Fig. 3 is an enlarged detail of the handle and guide-bracket. Fig. 4 is a cross-section on line 4 4 of Fig. 3. Fig. 5 is a vertical section on line 5 5 of Fig. 1.

In the drawings, 6 indicates the side of the car, and 7 the car-door. 8 indicates the cambracket, which is shaped as shown in Fig. 5, having an inner inclined portion 9, which the car-door engages and by which it is forced over into contact with the side of the car when lowered.

10 indicates a supporting-bracket which may or may not be similar to the cam-bracket 8, as desired. r

11 indicates a rail arranged to receive wheels 12 13, which carry the door when raised. The wheels 12 13 arejournaled in levers 1a 15, respectively, the outer ends of said levers being pivoted to cam-hangers 16 17, respectively, secured at the upper ends of the car-door, as shown in Fig. 1, and extending over the rail, as indicated by dotted lines in Fig. 2. The inner ends of the levers 1415 are provided with slots and are connected by a bolt 18, which passes through said slots, to a rod 19, as shown in Figs. 1 and 2. The rod 10 extends downward through guides 21, secured to the door, preferably on a central line, as shown. The rod 19 is provided with a shoulder 22 above the guide 20 and in such position that when the rod is moved to its lowermost position the shoulder 22 will strike the guide 20. The guide 20 thereby acts as a stop to prevent excessive downward movement of the rod 19.

23 indicates a guide-bracket which is secured to the car-door and receives the lower end of the rod 19, as shown in Figs. 1 and 3.

24 indicates a chain or other flexible device which is connected to the lower end of the rod 19 and carries a handle 25.

The operation of my im proved apparatus is as follows: Norm ally the car-door rests upon one or both of the brackets 8 10 and the brackets 16 17, the brackets 8 10 and 16 17 serving to hold itin contact with the side of the car. hen the door is in this position, the inner ends of the levers 14: 15 will be in their uppermost position and the weight of the door will not be carried by the wheels 12 13. Vhen it is desired to move the door, the operator takes hold of the handle 25 and by a downward pull raises the door by means of the levers 14: 15 and wheels 12 13,which constitute the lifting and lowering mechanism, the parts moving to the position shown in Fig. 1. The operator then exerts a lateral pull upon the handle 25, causing the flexible device 24 to engage the, lower edge of the guide-bracket 23. By this means not only is the lateral pulltransferred to the car-door, but by bending the flexible device 24 over the loweredge of-said guidebracket it is temporarily locked in position, so that little or no pull is required to maintain the door in its raised position, thus permitting the operator to exert only what force is necessary to move the door on its supporting-wheels. When the handle 25 is released, it immediately swings to a vertical position and the door drops upon the brackets 8 10 and 16 17. This causes the inner ends of the levers 14 15 to rise, moving the chain upinto guide-bracket 23, as shown in Fig. 3. The

advantages of this feature of my present invention are the locking of the door in its raised position while the lateral pull is applied, simplicity of construction, which reduces the cost of the door and also reduces its liability to get out of order, and the arrangement by which a direct downward pull may be applied to the lifting and lowering mechanism, thereby enabling the operator to raise the door properly before it is moved laterally. Another advantage is that theiiexible connection of the handle 25 with the connecting-rod 19 permits of the operation of the apparatus with equal facility to move the door in either direction.

That which I claim as my invention, and desire to secure by Letters Patent, is-

l. The combination with a sliding car-door, and mechanism for lifting and lowering it to and from its sliding position, of an operating device for said lifting and lowering mechanism, said operating device being flexible at its lower end, and a guide through which said flexible portion of the operating device passes, substantially as described.

' 2. The combination with a sliding car-door, and mechanism for lifting and lowering it to and from its sliding position, of an operating 3. The combination with a sliding car-door,

levers pivotally connected to the upper portion of the door, and wheels carried by said levers, of a track upon which said wheels run, a connecting-rod connected to said levers, a guide carried by the car-door, and a flexible device connected to the lower end of said rod and passing through said guide, substantially as described.

4. The combination with a sliding car-door, levers pivotally connected to the upper portion of the door, and wheels carried by said levers, of a track upon which said wheels run, a connecting-rod connected to said levers, a guide carried by the car-door, a flexible. device connected to the lower end of said rod and passing through said guide, and a stop which limits the extent of movement of said connecting-rod, substantially as described.

5. The combination with a sliding door, and

levers for lifting and lowering it to and from I GRAHAM P. JONES. Witnesses:

GEORGE J. M. PORTER, BELDEN D. JoNEs.