US407821A - Car-coupling - Google Patents

Description

(No Model.) s Sheets-Shea? 1-. E. P. EASTWIOK, J1.

CAR COUPLING.

I By

ATTORNEYS.

N PEYERS PholoLithograpber, Wanhi nnnnnnn C.

3 Sheets-Sheet 3.

(No Model.)

B. P. EASTWIOK, Jr.

GAR GOUPLING.

Patented Jul so, 1889.

A TTORNEYS.

N. PETERS. mowumn m w, \Vlihing'on, o. c.

UNITED STATES PATENT OFFICE.

EDWARD P. EASTWICK, JR, OF NEWV YORK, ASSIGNOR TO E. CLINTON CLARK, OF SARATOGA, NEIV YORK.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 407,821, dated July 30, 1889.

Appli i n fi September 19, 1888. Serial No. 285,793. (No model.)

To aZZ whom it may concern:

Be it known that I, EDWARD P. EAs'rwIcK, J r., of the city, county, and State of New York, have invented a new and Improved Car-Coupler, of which the following is a'full, clear, and exact description.

My invention relates to an improvement in car-couplers, and has for its object to provide a means whereby the movement of the jaws will not be controlled by the axis, which has heretofore been the guiding center, and wherein the locking side of the pin will be coincident, or approximately so, with the radial line from the center of revolution, thus taking the strain perpendicular to its surface and preventing any tendency to sliding andwearing movement. Its object is also to provide greater bearing-surfaces bot-h for the knuckle and pin than has heretofore prevailed and to reduce the strain on the locking-pin, the latter effect being accomplished by making the distance of the locking-pin from the center of revolution as great as practicable, which also prevents any lost motion at the pin being multiplied at the locking-j aws.

The invention consists in the novel construction and combination of the several parts and the special construction of the knuckle, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of the coupler applied to a car. Fig. 2 is a perspective View of the detached knuckle. Fig. 3 illustrates couplers in alocked posit-ion, one c0upler being in horizontal section. Fig. 4c is a vertical section taken on line 00 m of Fig. 1; and Fig. 5 is a plan view of a coupler, illustrating in dotted lines the several lines of construction whereby the several curves are formed.

In carrying out the invention the car-coupler is composed of three parts-namely, a hollow draw-head A, a rocking jaw or knuckle B, and a locking-pin C.

The draw-head A is formed with a horn or' projection a at one side, an essentially central opening a, and a second opening a in the side opposite to that carrying the aforesaid horn or projection, which latter opening is arc-shaped and is adapted to receive the arcshaped stem of the j aw or knuckle B. The width of the opening a is determined and the two openings created by perpendicular lugs or ribsbb',formed integral, respectively, with the upper and lower walls of the drawhead, as best shown in Fig. 4. The ribs 1) and b are in vertical alignment, and space is made to intervene their approaching ends. The ribs Z) and b are circular, as illustrated in Fig. 3, and also serve as guides for the stem of the knuckle.

In the'upper and lower walls of the drawhead, between the ribs 1) b and the nearest side wall, close to the former, a circular groove or channel b is produced, one channel vertically aligning the other.

The arc-shaped stem of the jaw or knuckle B, which is entered at the opening a and partially revolves within the draw-head, has its center of motion at the axisb and is guided, as aforesaid, by the ribsb and b and the side walls forming the channel 19 The stem of the knuckle or jaw B is held to slide inthe draw-head by shoulders d d, formed integral with the upper and lower sides of the inner member B, as best shown in Fig. 2 and dotted lines, Fig. 3. The shoulders d coincide with the grooves or channels 79 in which they are adapted to enter and slide, as

shown in Fig. 4? Upon one side of the jaw or knuckle a shoulder d is formed, purposed to arrest the movement of said jaw by striking against the draw-head at (1 The arcshaped stem of the jaw or knuckle is provided with fin-shaped web or wing E, purposed to confine and limit the movement of the same, which web or wing constituting a part of the knuckle projects from one side, as best shown in Figs. 2 and 3. On the upper side of the wing a stop-lug E is located, which, in conjunction with the pin 0, arrests 95 the outward movement of the knuckle, the acting faces of which 'wing and lug are on radial lines from the center of motion of the The pin 0 is preferably rectangular in crosssection and provided with a projecting head 6 and a reduced lower end, whereby a shoulder 6 is formed. The pin is loosely fitted in pin-apertures e and 6 adapted, respectively, to the contour of the large and reduced portion of the pin, as best shown in Fig. 4. At one side of the lower pin-aperture e a second parallel aperture e is made, through which any snow accumulated in the draw-head may be made to pass. The said aperture 6 is normally covered by the pin-shoulder e, which shouldered portion of the pin is seated in the bottom of the draw-head, as illustrated in Fig.

4. In the lower end of the pin there is a hole,

through which passes a bar 6 which determines the distance the pin may be drawn up.

The draft is virtually from the pin, as when the knuckle is in a coupled position the outer end of the web E bears tightly against the rear of the pin 0, as shown in Fig. 3. When the knuckle is in an uncoupled position, the pin having been drawn upward and the outer or hook surface of the knuckle swung to the side, the web or wing- E is also drawn out, and the shoulder in the pin, when the latter is released, will rest upon the said web.

It will be observed that the movement of the jaw or knuckle is not controlled by the axis, which heretofore has been the guidingcenter, and that the jaw does not have a bearing in the axis b when in use, but acts independently of it, the movement of the said jaw being controlled and directed by the shoulders d entering the channels 6 It will also be further observed that the locking-pin is so located that the locking side is coincident, or

approximately so, with the radial line from the center of revolution, and that the distance of said pin from the center of revolution is made as great as practicable with reference to the distance of the line of draft from the same center. Thus the strain upon the pin is made to come practically in a line perpendicular to its surface, thereby reducing to a minimum any tendency to wear, and at the same time preventing any lost motion being multiplied at the engaging surfaces of the knuckle-hooks.

The pin may be elevated in any approved manner. In Fig. 5 I illustrate by a diagram the lines upon which the curved hooked end of the knuckle and the curved face of the draw-head are constructed, as it is desirable in this form of coupler for satisfactory and reliable operation that the said curved lines be accurately drawn. The pin, though preferably made rectangular in crosssection, need not necessarily be so, but may be approximately of that form.

When a coupler is-constructed as herein shown and described, the smallest possible strain is brought to bear upon the pin, and any lost motion at the pin is effectually prevented from multiplying at the engaging surface of the locking-j aws. A large bearingsurface for the knuckle upon the draw-head is also provided and the wear thus distributed, and a large bearing-surface upon the pin is obtained in a direction perpendicular to its bearing surface. The ribs of the knuckle are made to fit snugly in the channels of the draw-head.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. In a car-coupler, the combination, with a draw-head having an arc-shaped opening formed therein, of a movable knuckle provided with an arc-shaped stem and a web or wing extending from said stem, substantially as described.

2. In a carcoupler, the combination, with a drawhead having an arc-shaped opening formed therein, of a movable knuckle provided with an arc-shaped stem, a web or wing extending from said stem, and a looking device engaging said web or wing, substantially as described.

3. -In a car-coupler, the combination, with a draw-head having an arcshaped opening formed therein, of a movable knuckle provided with an arc-shaped stem and a web or wing of less vertical depth than said stem, substantially as described.

4. In a car-coupler, the combination, with an essentially hollow draw-head provided with interior top and bottom circular channels, of a locking jaw or knuckle having formed upon the inner section or stem circular ribs and a wing extending outward from the said inner section or stem, substantially as shown and described.

5. In a coupler, the combination, with an essentially hollow draw-head provided with interior top and bottom circular channels, a locking jaw or knuckle having formed upon the inner section or stem circular ribs, and a wing extending from the said inner section or stem, of a locking-pin passed through the draw head, provided with a recess at the lower end, whereby a shoulder e is formed, adapted torest upon the ring when the latter is in an uncoupled position, substantially as shown and described.

6. In a coupler, the combination, with an essentially hollow draw-head provided with interior top and bottom circular channels, a locking jaw or knuckle having formed upon the inner section or stem top and bottom circular ribs, and a wing extending from the said inner section or stem provided with a stop, of a pin passedthrough the draw-head coincident with the radial line from the center of revolution of the knuckle and provided with a longitudinal recess in one side, forming a shoulder c, all adapted to operate substantially as shown and described.

7. The combination, with an essentially hollow draw-head provided with an interior top and bottom channel, of a locking jaw or knuckle provided with a buffing-surface, ribs formed top and bottom of the interior section or stem of the jaw, a wing extending from the said inner section or stem, a lug integral with said wing, and a locking-pin rectangular in cross-section provided with a reduced lower surface, whereby the pin will lock the jaw in an open position at the end of the wing carrying said lug, the plane of which lug is in an approximately radial line from the center of motion, substantially as shown and described.

8. In a car-coupler, the locking-j aw, substantially as shown and described, consisting 10 of an outer knuckle-section, an inner pivotal section or stem provided with a circular rib at top and bottom, and a Wing extending horizontally from said pivotal section or stem provided with a stop-lug, substantially as shown and described.

EDW. P. EASTWIOK, JR.

Witnesses:

FREDERICK ROBERT, Row. P. EASTWICK.

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