US585639A - Draft-rigging for cars - Google Patents

Description

L Lb e G h S S t e e* h S 3 E S A.. C d d AO M O N` DRAFT RIGGING POR GARS.

No. 585,639. Patented June 29, 1897.

(No Model.) 3 Sheets-Sheet 2,

` W. CASE.

DRAFT RIGGING PUR GARS.

No, 585,639. -Patented June 29,1897.,

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(No ModeL.) 3 Sheets-Sheet 3.

W. GAS. DRAFT RIGGING POR GARS. No. 585,639. Patented June 29,1897.

WITNESSES NTTED STATES PATENT rrrcn.

IVILLIAM CASE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THF. NATIONAL MALLEABLE CASTINGS COMPANY, OF CLEVELAND, OHIO.

DRAFT-RIGGING FOR GARS.

SPECIFICATION forming part of Letters Patent No. 585,639, dated June 29,1897.

Application filed November 16,1896. semina. 612,194. (No model.)

To all whom t may concern:

Be it known that I, WILLIAM CASE, of Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Draft-Riggings for Cars, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a perspective view of a drawbar and draft-rigging constructed in accordance with my invention. Fig. 2 is a vertical longitudinal section of the draft-rigging. Fig. 3 is a cross-section on the line III III of Fig. 2. Fig. l is a view similar to Fig. 2, but showing a washer-stop interposed between the follower 12 and the end of the stem 11.

My invention is an improvement upon the ldraft-rigging for which I have obtained United States Letters Patent No. 564,867, dated July 28, 1896, and among its objects is to afford a draft-rigging having two springs so arranged with the other parts that in buffing both springs are compressed, while in pulling only one spring is compressed. Such action of the rigging is desirable in certain cases, and my present device enables it to be attained with as little complication of mechanism as possible.

In the drawings, 2 represents the shank of a draw-bar, which is connected to the draftrigging by a strap 3 ofV U form, the branches of which are bolted or riveted to the drawbar and extend around the draft-rigging, as shown, but instead of such strap the connection may be made .by a tail-bolt which extends lengthwise from the draw-bar through the central parts of the draft-rigging. These may be used interchangeably with the advantages pointed out in the specification of my said patent.

4 4 are the draft-irons, set in parallel position on opposite sides of the draft-rigging and provided with lugs or shoulders 6 7, against which the followers of the springs have a bearing. 8 S are the draft-timbers, to which the draft-irons are xed.

9 and 10 are the coiled springs of the draftrigging, which are set in line with each other and with the draw-bar 2. The spring 9 encircles a stem 11, having a head or follower 5,

12 is a follower which bears against the fori ward end of the spring 9 and ts around the stem 11, having, preferably, a rearwardly-extending cylindrical stop portion 13 outside ofthe spring.

14 is a follower fitting around the stem 11 between the follower 5 and the rear end of the spring 9.

15 is a follower at the rear end of the spring 10, having a connecting-box 16, whose end 17 bears against the follower 14:. This box is preferably rectangular in cross-section, as are also preferably the followers 12, 141, and 15, so that they may fit between and may be conveniently guided by the draft-irons..

The follower 5 is preferably, though not necessarily, integral with the stem 1l, and the follower 15 is preferably, though not necessarily, integral with the box 16.

When the parts are assembled together, the rear end of the draw-bar abuts against the follower 12 and stem 11, and the rear end of the strap fits against the rear of the follower 15. When the draw-bar receives a bufiing impact, its rear end will press back upon the follower 12 and stem 11. The back motion of the follower 12 will compress the spring 9, and the back motion of the stem 11, acting through the follower 5, will compress the spring 10 against the follower 15, which abuts against the stops 7 on the draft-irons. In this manner both springs are compressed. When a pullingstrain is imparted to the drawbar, it is transmitted by the strap 3, follower 15, and box 16 to the follower 14, thus compressing the spring 9, whose tension is transmitted to the follower 12 and thus to the lugs 6 on the draft-irons, against which the follower 12 abuts, but as the stem 11 is not fixed to the follower 12, but can move freely within the same in a forward direction, the spring 10 is not compressed in pulling. The springcompressing parts of the device are two in number, one composed of thefollower 15, box y IOO gether. These parts act by moving reciprocally in opposite directions.

It will be noticed that the end follower 15 of the spring 10 is connected with the intermediate follower 14 by the box 16, but the end follower I2 of the spring 9 is not connected with the intermediate follower 5. The consequence is, as above explained, that in pulling the motion of the end follower 15 is transmitted to the intermediate follower 14 and compresses the spring 9, while the follower 5, being unconnected to the other end follower 12 and being free to move forward with the draw-bar, does not offer resistance to the motion of the spring 10 and does not cause the same to be compressed. In buffrn g, however, the bearing of the end of the draw-bar against the stem 11 and follower 12 causes both springs to be compressed, the spring 9 being compressed between the followers l2 and 14 and the spring IO being compressed between the followers 5 and 15.

In the operation of the device, both in pulling and in buffing, the compression of the springs is stopped at a predetermined point by engagement of the follower 14 with the end of the stop portion 13. This constitutes a very desirable and simple safety appliance.

The box form of the part 16 is desirable, but it may be made in the form of an open cage. It receives the spring 10, acts as a guide for the follower 5, and is itself movable and guided in its movement between the draftirons or draft-timbers.

By interposing a washer-stop, so as to cause the end of the stem 11 to bear against the end follower 12, compression of both springs may be obtained in pulling as well as in bufling. By such employment of a removable washer the draft-rigging can be adapted interchangeably to secure compression of both springs in pulling as well as in buing or the above-described double action in bufflng and single action in pulling. This is shown in Fig. 4, which is a View otherwise similar to Fig. 2, but showing an annular washer 18, set against the follower 12 and constituting a stop against which the end of the stem 11 abuts.

By reversing the parts above describedfi. e., turning them so that the end follower 15 shall abut against the draw-bar and the end of the stem 11 and the follower 12 shall abut against the strap -the operation will be reversed and the draft-rigging will act to effect compression of both springs in pulling and to effect the compression of one spring only in buffing.

Within the scope of my invention, as defined in the following claims, many changes may be made in the construction of the apparatus by the skilled mechanic.

I claim- 1. Thecombination of tandem springs, end followers, intermediate followers, the end follower of one of the springs being connected with the intermediate follower of the other spring, and the end follower of the last-named spring being unconnected with the intermediate follower of the first-named spring, and a connection extending to the end follower of the rear spring, i

2. The combination of tandem springs, end followers, an intermediate follower, a stem extendingfrom the intermediate follower and passing by the end follower to the end of the spring mechanism of the rigging, and a connection extending to the end follower of the rear spring.

3. The combination of tandem springs, end followers, an intermediate follower, a stein extending from the intermediate follower, passing by the end follower to the end of the spring mechanism, and a removable stop or washer whereby the end of said stem can be caused to bear upon said end follower and the device used interchangeably to effect compression of both springs in motion of the parts in either direction, or compression of both springs in their motion in one direction only.

4. A draft-rigging having tandem springs, followers at the ends of the springs, intermediate followers, the end follower of one of the springs being connected with the intermediate follower of the other spring, and the end follower of the last-named spring having no such connection with the intermediate follower of the rst-narned spring, but said intermediate follower having a stem extending to the end of the spring mechanism of the draft-rigging.

5. In a draft-rigging, the combination of tandem springs, and followers I2, 15, intermediate followers 5, 14, and a box 16, extending from the end follower 15 to the intermediate follower 14 the follower 5 being unconnected with the follower 12.

6. In a draft-rigging, the combination of tandem springs, and followers 12, 15, intermediate followers 5, 14, anda stem extending from the follower 5 to the draw-bar, but unxed to the end follower 12.

7. A draft-rigging having between two adjacent followers an intermediate annular stop, adapted to stop the followers at the limit of the desired compression of the spring.

S. A draft-rigging having a follower with a stop fixed to the follower and adapted to engage a second follower at the limit of the desired compression of the spring. Y

9. A draft-rigging having tandem springs, followers at the ends of the springs, intermediate followers, the end follower of one of the springs being connected with the intermediate follower of the other spring, and the end follower of the last-named spring being unconnected with the intermediate follower of the first-named spring, and one of the end followers having a stop portion.

10. A draft-rigging having an end follower provided with an annular stop which is adapted to engage a second follower at the limit of the desired compression of the springs.

11. A draft-rigging having tandem springs, end followers, intermediate followers, the in- IOO IIO

termediatefollower of one spring being conneoted to the end follower` of the other, a stem extending from the other one of said intelrne` diete followers to the draw-bar, and a remotiable stop or Washer adapted to be inserted between said' stein and the end follower', Wheleby the draft-riggingoan be used interchangeably to effect compressionof both springs in motion 'of the draw-bar in either direction, or compression of both springs in 1o its motion in one direction only.

In testimony whereof I have hereunto set my hand.

WILLTAM CASE.

Nitnessesz `CLAYTON MARK,

` O. J. FEELING.

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