US684505A - Draft or buffing rigging. - Google Patents

Description

Patented Oct. I5, 1904!.

R. D. GALLAGHER, In. DRAFT 0B BUFFING RIGGING. (Application filed July 1, 1901.)

(No Model.)

Egg/Hz I w/eywaea- UNITED STATES PATENT OFFICE.

RICHARD D. GALLAGHER, JR., OF NEW YORK, N. Y., ASSIGNOR TO STAND- ARD COUPLER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEWV JERSEY.

DRAFT OR BUFFING RIGGING.

SPECIFICATION forming part of Letters Patent N 0. 684,505, dated October 15, 1901.

Original application filed April 8, 1901, Serial No. 54,900. Divided and this application filed July 1, 1901.

Serial No. 66,726.

(No model) To all whom it may concern.-

Be it known that I, RICHARD D. GALLA- GHER, J r., a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Draft or Bufiing Rigging; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the figures of reference marked thereon.

This invention relates to improvements in rigging designed to yield and take up strains of parts moved by heavy pressure, and while the invention is well adapted for use in connection with heavy mechanism or mechanism operating under heavy pressure, such as ordnance, wherein the recoil must be checked, it is particularly designed to answer the requirements of the draft-rigging for cars, and more especially rigging of heavy rollingstock-as, for instance, the modern steel cars of large capacity. In its application to draft-rigging for cars the invention is designed to be capable of ready application to cars of practically any type and having either steel or wood draft timbers or framing.

To this end one of the objects of the invention is to provide a structure capable of being readily substituted for draft-rigging on rolling-stock now in use or applied to rollingstock in course of construction without cutting to any material extent the draft-timbers when of Wood or modifying the framing when of metal.

A further object of the invention is to provide a structure in which the springs may be arranged in the line of pressure and at the same time their resistance so augmented and modified that springs of ordinary standard size and power may, where desired, be utilized for the draft-rigging of rolling-stock of practically unlimited weight and without occasioning shock or oscillation of the cars in starting, stopping, or varying speed and regardless of the length of the train.

The present application is a division of my prior application, Serial No. 54,900, filed April 8, 1901; and the presentinventi'on consists in certain novel details of construction and combinations and arrangements of parts, all as will be now described, and pointed out particularly in the appended claims.

In the accompanying drawings, Figure l is a horizontal section of a draft and buffingrigging embodying the present improvements. Figs. 2 and 3 are similar views showing slightlymodified arrangements of the parts,

Like numerals in the several figures designate the same parts.

In the application of the invention to a draftrigging of railway-cars the working parts of the mechanism are preferably sustained between cheek-plates, which may be of suitable design to adapt them for attachment to the sills or draft-timbers of the carframe, and in the preferred type these cheekplates are made as nearly as possible to conform to the requirements of car-frames of any construction now in use or so as to be capable of application thereto without modification, but simply by varying the mode of attachment.

In said drawings the numeral 1 indicates cheek-plates or equivalent structures adapted to form part of or be attached to the under framing of the car, all as in my said prior application. Said cheek-plates are provided with inclined guiding-surfaces, which may be integral therewith, as indicated at 2, Fig. 3, but are preferably formed as parts of a separate integral frame 3, as in Figs. 1 and 2, which frame is held in suitable seats in the proximate faces of the cheek-plates.

The numeral tindicates the draw-bar, and 5 a strap attached thereto, both of ordinary or preferred construction. The working parts of the rigging all lie between the cheekplates and within the strap 5, the yielding member being preferably formed by a coiled spring or springs,which may be of the standard types now commonly used in draft-rigging. Tandem springs are preferably employed, as in Fig. 1, in order to secure a somewhat wider range of movement, such springs being indicated by the numeral 6.

The inclines or frames 2 and 3 are located at one end only of the rigging in the present instan ce, and a follower 7, having opposite inclines 8,works between them, suitable wed geblocks 9 being interposed between the inclines of the follower and cheek plates, respectively. The follower and wed ge-blooks are acted upon, but in opposite directions, by the draw-bar and spring, whereby in transmitting motion from one of said last-mentioned members to the other the wedge-blocks are caused to travel in diagonal planes, and the resistance due to the friction and wedging of the parts is added to the direct resistance of the springs. Further,a differential movement is seen red, which adds to the efficiency of the apparatus in resisting and taking up strains incident to the use of the apparatus.

In the preferred arrangement shown in Fig. 1 the chcek-platesl are provided with stops 10 and 11 for retaining ordinary follower-plates 12 13, between which the rear one of the springs 6 is located, while the forward spring 6 is located between the followerplate 13 and the follower 7, the rear end of the latter spring, however, preferably resting against a face-plate 11, having a hub 15 extending rearwardly through the followerplate 13 and contacting with a corresponding hub 16 on the rear follower-plate 12 or on a face-plate 17, corresponding to the plate 1 1 and against which the tail-strap is adapted to bear. With this construction draft or forward strains will compress both springs directly and independently; but on the reverse movement of the draw-bar or when buffing strains are applied the springs are compressed indirectly through the wedge-blocks and follower, thereby adding to the resistance of the springs, the resistance of the friction, and wedging action of these parts. The follower with the arrangement shown travels faster than the draw-bar, and the tandem arrangement of springs permits of a longer range of movement and at the same time permits of the use of standard springs.

The arrangement shown in Fig. 3 corresponds closely to that of Fig. 1, save that but a single spring 18 and a single follower-plate 19 are employed, the spring being confined between the follower-plate 19 and follower 7.

In Fig. 2 two follower- plates 20 and 21 are employed, with the spring 22 between them, and the wedging and frictional devices are located outside of and cooperate with'one of the follower-plates. In this figure the direction of the inclination of the guiding-inclines 3 is the reverse of that in Figs. 1 and 3, and a wedging-follower 24 is introduced between the wedge-blocks 9 and the draw-bar. The wedge-blocks 9 work against the face of the follower.

By varying the angle of inclination the wedging action and frictional resistance may be correspondingly varied, adapting the apparatus for use in resisting strains of practically unlimited power, and in every instance the frictional resistance is such as to prevent injurious recoil of the springs, thereby insuring a steady movement in both directions under all conditions of use.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an apparatus such as described, the combination with a spring and followers between which the spring is confined, of a pressure-transmitting member arranged in alinement with said spring, direct connections between the pressure-transmitting member and a follower at one end of the spring wedgeblocks interposed between the pressuretransmitting member and the follower at the opposite end of the spring and fixed inclined guides with which said wedge-blocks cooperate; substantially as described.

2. In an apparatus such as described the combination with a spring and followers between which the spring is confined, of a pressure-transmitting member cooperating with the follower at one end of the spring to directly compress the same, wedge-blocks, fixed and movable inclines with which the same cooperate interposed between the pressuretransmitting memberand follower at the opposite end of the spring and stops for preventing outward movement of the followers, whereby strains in one direction are resisted directly by the spring and strains in the opposite direction are resisted by the spring and frictional and wedging resistance of the wedge blocks; substantially as described.

3. In a draft-rigging the combination with the followers, stops against which they abut to hold them against outward movement, a spring interposed between said wedge-blocks, a draw-bar and a strap secured to the drawbar and passing around the followers and spring, of wedge-blocks interposed between the front follower and draw-bar, and fixed and movable inclines with which the wedgeblocks cooperate,the movement of the wedgeblocks along the inclines being resisted by the spring interposed between the followers; substantially as described.

4. In a draft-rigging, the combination with springs arranged in tandem follower-plates at opposite ends of one spring, stops to prevent the movement of said follower-plates away from each other, a follower at the outer end of the other spring and stops to prevent its outward movement, of a pressure-transmit ting member cooperating to directly move the rear follower-plate, wedge-blocks and fixed and movable inclines cooperating therewith interposed between the follower at the front end and the pressure-transmitting member, whereby the springs are independent when resisting strains in one direction and conjoint in resisting strains in the opposite direction; substantially as described. 7

5. In a draft-rigging the combination with springs arranged in tandem and followers at the front, back and between said springs, of

stops for holding the front and back followers against outward movement, while permitting them to move inward, stops for holding the intermediate follower against movement in one direction, a pressure-transmitting member cooperating with the front and back followers, and a connection for transmitting the pressure from said member past one of said springs to the inner end of the other spring whereby the springs are independent when strains in one direction are resisted and conjoint when strains in the opposite direction are resisted; substantially as described.

6. In a draft-rigging the combination with springs arranged in tandem, followers at the front, back and between said springs, stops for preventing the outward movement of the front and back followers and stops for preventing the movement of the intermediate follower in a forward direction, of aface-plate in rear of the rear follower and in front of the intermediate follower, hubs on said faceplates passing through the followers and contacting with each other and a pressure-transmitting member inclosing the followers and springs for compressing said springs under either draft or buffing strains, the said springs being acted upon independently in one direction and conjointly in the opposite direc tion; substantially as described.

7. In a draft-rigging the combination with springs arranged in tandem, followers at the front, back and between said springs, stops for preventing the outward movement of the front and back followers, stops for preventing the forward movement of the intermediate follower, a face-plate in rear of the rear follower and in front of the intermediate follower and hubs on said face-plates passing through the followers and contacting with each other, of a pressure-transmitting member inclosing the followers and springs,wedgeblocks interposed between the front follower and pressure-transmitting member and fixed and movable inclines cooperating with said wedge-blocks, whereby under strains in one direction the springs are acted upon directly and independently and under strains in the opposite direction the pressure is transmitted to the springs through the wedge blocks and said springs act conjointly in resisting such strains; substantially as described.

, RICHARD D. GALLAGHER, JR.

Witnesses:

A. W. GAYLoR, L. F. MOGARITY.

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