US420014A - Car-coupling - Google Patents

Description

(No Model.) A

E. LATHAM.

GAR. GGUPLING.

No. 420,014.y Patented Jan. 21, 1890.

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NrTED STATES AArmar l FFICE;

EPHRAIM LATI-IAM, OF IVASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR OF ONE-HALF TO ETHAN A. SAWYERS, OF BROYVNSVILLE, OREGON.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 420,014, dated January 21, 1890. Application filed December 2, 188;). Serial lla. 332,225. (No model.)

To all whom t may concern:

Be it known that l, EPHRAIM LATHAM, a citizen of the United States, residing at Tashington, in the District of Columbia, have invented certain new and useful Improvements in Car-Couplings; and I -do hereby declare the following to be a full, clear, and exact description of the invention, suoli as will enable others skilled in the art to which it'appertains to make and use the saine. f 1

This invention relates to automatic cany couplings; and its general object is to pro, vide means whereby two cars may be set to couple when they come together, or they may i be so set as not to couple.

The objects, more in detail, are, rst, to provide a hook-coupling with means for maintaining two hooks in engagement, even though there be a considerable diierence in the level of the two draw-bars; second, to give the hookretainer a solid safe rest while in service; g third, to provide means for coupling the same draw-bar b y a common link and pin, and auX- iliary means for again coupling with the link and pin if the hook should be broken, and, fourth, to provide means for releasing the hook and for preventing its being re-engaged when not desired.

To this end my invention consists in the construction and combination of parts form-l ing an automatic car-coupling, hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure I is an end view of my car-coupling, showing also some of the adjacent portions of a freight-car. Fig. 1I is a horizontal section of the same coupling at the line X, Fig. I, with the jaw closed; and Fig. III is a View looking on top of two of my couplings ready to come into engagement.

5 represents the drawbar, made hollow, as usual, and provided with the usual kin g-bolt 6, extending rearward.

7 is the coupling-hook, hinged at 8 in a slot in the head of the draw-bar on a vertical hinge-pin 9.

10 is that portion of the hook which engages a similar portion of another hook in service, audit may be termed the jaw. This jaw has projections 11 extending both above and below the general plane of the draw-head lfor the purpose of retaining its hold of the opposite jaw when there is a considerable difference in the level of the draw-heads.

12 is the trip-arm of the hook.

13 is the guard fitted to slide longitudinally in the draw-bar, and it engages the trip-arm 12 to hold the hook in service.

14 is a spring constantly impelling the guard forward.

15 is a plug fitted freely into the draw-bar to till up the length thereof behind the spring 14E, and reduced in size midway for sake of lightness. It serves as a base for the spring to push against. The forward end of -the plug 15 and the rear end of the guard 13 are each provided with an extending stud 16'to enter the spring and maintain it in line and free from wear `upon the sides of the drawbar. i

17 is a wedge fitted through a transverse mortise in the guard and in the draw-bar, the wedging-edge 18 acting against a rounded or wedge-shaped shoulder 19 of the guard 13 to draw the guard backward against the pressure of the spring 14, while the straight edge slides against the draw-bar, and 2O is a portion of the wedge having parallel sides adapted to rest upon the parallel edge 21 of the guard to hold the same retracted as long as may be desired. The wedge may be provided with 'isis a direct'acting handle 22, whereby it may be pulled and pushed through the guard in operation; but I prefer the hand-lever 23, pivoted to the dead-wood 25, and extending above it far enough to be readily seized by hand.

26 is a rod connecting the wedge with the said lever at a point below the dead-wood in order that when the draw-bar slides out and in the said connection may not be interfered with. The straight portion 27 of the wedge l7 prevents the guard 13 from being pushed out of its bearing by the spring when not in service, and it stops the guard with the front end thereof just flush with the adjacent portions of the draw-head, so that no portion of it projects to be broken off.

28 represents a mout-h in the coupling-hook adapted to receive a common link, and 30 a hole for the usual couplingbpin. These are to be used whenever an old style of draw-bar has to be coupled with this one.

IOO

3l is a similar mouth in the solid body of the draw-head adapted to receive the usual link, so that the car may be drawn to the yard for repairs if the coupling-hook should be broken.

In operation it is only necessary that one of the hooks to be coupled should be set open, as shown in Fig. III. To do this, iirst release the trip-arm 12 of the hook by pulling the Wedge 17 far enough to withdraw the guard 13 from the circular path of the said arm, and then swing the hook 7 to one side. Now release the wedge and the guard will be returned by its spring '14 to its normal position. meets this one, it will push the arm 12 backward and swing the hook into engagement with the newly-entered one. At the same time the arm 12 will push directly uponv the front end of the guard 13, moving it backg out of the way until the hook is seated; when the guard will swing forward beside. the end of arm 12 and hold the hook forl service. This proportioning the parts so that the guard may rest its back at 32, opposite to the contact-face of the guard and arm 12, directly against a solid portion of the drawhead, is an important feature. Thus supported the guard cannot be broken. VIt is also considered very important that the arm 12, when in service, is buried in flush with the draw-head. By this construction it isl impossible for the entering hook to break the Varm 12, because it will be easily pushed back into its recess until the entering-hook abuts against the draw-head above and below it. To release a hook so that two cars will be:` pulled apart, draw in the wedge 17, and to=v hold the parts free so that two hooks will not j couple if brought together, draw in the said g wedge until its parallel portion 2O rests on the ledge 21, and so leave it holding thej guard drawn in.

Then, when the opposite hook` Having thus fully described myinvention, what I believe to be new, and desire to secure by Letters Patent, is the following:

I. AThe combination, in car-couplings, of a hollow draw-bar slotted in its front end, a coupling-hook hinged in the said slot and provided with a trip-arm, and a guard fitted to slide longitudinally in the draw-bar into the path of the said trip-arm, the front faces of the trip-arm and of the guard being flush with the adjacent portions of the draw-head when set for service and filling the mouth thereof, substantially as shown and described.

2. The combination., in car-couplings, of a hollow draw-bar having a holetransversely through it, a coupling-hook hinged in the draw-bar, a guard fitted to slide longitudinally in the draw-bar into the path of a portion of the said hook and provided with a hole transversely through it, having one side Wedge-shaped part way across and straight the rest, a wedge fitted to slide through the said transverse holes in both draw-bar and guard, the said wedge having parallel sides at each end of its wedging portion, and means for moving the wedge, substantially as shown and described.

3.. The combination, in car-couplings, of a draw-head, a coupling-hook hinged therein and provided with a mouth and pin-hole to receive the common link and pin, the said draw-head being also provided with another mouth and pin-hole to receive the common link and pin into the solid portion of the draw-head in case the hook becomes brokeln substantially as shown and described.

-In testimony whereof I afiiX my signature in presence of two witnesses.

' EPHRAIM LATHAM.

NVitnesses:

WM. H. DE LACY, W. X. STEVENS.

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