US297356A - dieteich - Google Patents

Description

(No Model.)

J. G. DIETRIOH.

THILL OOUPLING..

No. 297,356. Patented Apr. 22, 1884.

Irv/enter.

Wit-nus es N. PETER$ mwmm n m. Washington. I10.

NITED STATES ATENT Fries.

THlLL-COUPLING.

SPECIFICATION forming part of Letters Patent No. 297,356, dated April 22, 1884.

Application filed July 18, 1883. (N0 model.)

To all'whom, it may conceive-.-

Be it known that I, JEROME COLWELL DIETRICH, of the town of Galt, in the county of Waterloo, in the Province of Ontario, Canada, manulacturer, have invented certain new and useful Improvements on Thill-Oouplings, of which the following is a specification.

My invention relates to that class of thillcoupliugs in which the thill has a hooked end to lit over the bolt passing through the drawjack, and provided with a spring to keep it in position.

It consists in the peculiar construction, arrangement, and combination of parts, as hereinafter more fully described and claimed.

Figure l is a perspective view, showing my improved thill-coupling complete. Fig. 2 is a detailed view of the clip and jaws. Fig. 3 is a detailed view oft-he spring-plate. Fig. 4 is a vertical cross-section.

A is the ordinary draw-jack, held to the axle in the usual manner, and having a bolt or pin, B, passing through its jaws.

(J is ahooked end of a thill, curved and otherwise shaped, as shown, to fit over the bolt B between the jaws of the draw-jack, as inclicated. It will be noticed that the point a of the thill isthickened. so as to form an enlargement which will prevent it entering a passage through which the other portion of the hook may easily be moved.

D is a looped spring-plate, designed to fit between the jaws of the draw-jack A behind the hooked end of the thill C. The loop of this plate, it will be noticed, is curved so as to extend over the top of the thill, in order to press the thill firmly and yet easily against its bearing-bolt B.

E is a pin formed on the draw-jack A, and designed to fit into the hole E made in the plate when the said plate has been pressed home. It will of course be understood that exactly the same effect would be produced by forming the pin E on the plate D, the hole in this case being of course made in the drawjack; or an indentation might be made either in the plate or in the face of the draw-jack, to receive a projection formed on either the plate or draw-jack, as the case may be, the sole object being to form a snap-catch'for retaining the spring-plat'ein position. It will be noticed that in the drawings the surface of the drawjack, against which the spring-plate presses, is made at about right angles to the center line of the draw-jack. This form of drawjack gives ample surface against which the plate may press.v It will also be noticed that the spring presses on the upper part of the hooked end of the thill, whereby the thill is more securely held in place, and that owing to the peculiar formation of the spring it is only necessary to press on its upper portion with the thumb, when it can be released from the pin E and readily taken out, so that the thill can be readily removed when necessary. I am aware of Patents Nos. 45,519, 196,177, and 229,470, and make no claim to the construction shown therein.

What I claim as my invention is+ The combination, with the jack A, having pin E and bolt B, of the thill O and the spring D, having a large loop extending over the thill, as shown, whereby the thill is pressed downward upon the bolt and is made capable of easy removal, substantially as described.

J. O. DIETRIOH.

In presence of--- (Ants. G. BALDWIN, LEWIs TOMLINSON.

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