USRE4681E - Improvement in thill-couplings - Google Patents

Description

(3L) DANIEL A. JOH N SON.

Improvement in Thll Couplings.

Ressued Dec. 26, 1871.

wnNEssEs.

#f 2705. ML

UNITED STATES DANIEL A. JOHNSON, OF

IMPROVEMENT IN PATENT QFFIGE.

BOSTON, MASSACHUSETTS.

THlLL-COUPLINGS.

1 reissue No. 4,681, dated December 26,

To all ywhom it may concern:

Be it known that I, DANIEL A Boston, in the county ol' Sull'olk and State oi Massachusetts, have invented certain Improvements in rlhillbouplings, oi which the following is a full, clear, and exact description, reference being had to the accompanying drawing makA ing part of this specification, in which- Figure I is a perspective view of my improved thill-coupling. Fig. 2 is a longitudinal central Vertical section.

This invention relates to that cla-ss of thillcouplings in which an ela-stic packing is employed to prevent rattling and consequent wear ofthe parts; and consists mainly in certain devices for adjusting and regulating the pressure of said packing; and also in a device for holding the nut ofthe bolt which couples the thill, all of which will be more fully described hereafter.

In the said drawing, A represents the yoke of the coupling, the forward part ot' which is providedwith a socket, B,in which is loca-ted a plate, C. D represents the band which surrounds the axle, the ends of which band pass through the rear portion of the yoke A, and are secured thereto by nuts E. F F' represent lugs projecting from the band D above the socket B, between which lugs is pivoted the thill G. H represents a packing, of rubber, which rests in the socket B on the pla-te G, between lugs F F', and project-s upward behind the thill, being provided with a conc-.tvity which lits the circular end of said thill. I represents asetscrew which enters the bottom of the socket B, and bears against the plate C. J represents a projection on the outer side of the lug F', which projection holds the nut K of the couplin g-bolt L, and prevents the same from turning. This projection may, however, be on the lug F instead of on the lug F', in which case it will prevent the head of the bolt from turning.

Operation.

The end of the thill G is placed in position between the lugs F F', and the bolt L is introduced a-nd secured by screwing the nut K partially up, and then dra-wing the bolt back until said nut comes in contact with the lug 11"; the. bolt L is then turned by means of a wrench or other power applied to its head O, the nut l( being held by projection J until the whole is tightly screwed up, when, as will be readily seen, the nutcannot be turned. The rubber packing H is then l compressed by means of the set-screw Iand plate JOHNSON, 0f C, until it presses with any desired force against the thill G, thereby prevent-ing any rattling of i the latter, and forming a noisclcss and secure coupling'.

I am aware that rubber packing has been used heretofore in thill-couplings; but I know of no arrangement for compressing said packing after the thill is attached, it being usually necessary to crowd the thill against the packing with great force in order to compress it sul'hciently, thus requiring much physical strength to perform the operation of coupling the thills. With my device, however, the operation can be performed by any person with but little exertion, itbeing only necessary to put the thill in place and compress the rubber by means of the sccrew I, as above mentioned.

Instead of the yoke A being provided with a socket made in one and the. same piece therewith, a portion of the socket may be formed in a piece separate therefrom-for instance, one or more sides ofthe plat-c C upon which the packing H bears, and which is operated by the set-screw, may be turned up to form a portion or the Whole of the socket, without departing from the spirit ol' my invention.

The projectionJ which locks the bolt-nut K is of great utility, and supplies a want long felt in this direction, obviatin g any difticulty in removin g the bolt when the thread becomes rusted, and any danger of losing the nut.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, as an improvement in lthill-couplin gs, is-

A yoke, A, provided with a socket, whether made in one and the same piece therewith, or partially in a piece separate therefrom, substantially as described.

I also claim a yoke,A,provided with a socket, whether made in one and the same piece therewith, or partially in a piece separate therefrom, in combina-tion with the packing H, band D, lugs F F', screw I, and plate O, substantially as and for the purpose set forth.

I also claim the lug F or F', provided with a projection, J, as and for thc purpose described.

\'Vitncss my hand this 23d day of November A. D. 1571.

In presence of- D. A. JOHNSON.

1). E. TESCHEMACHER, N. W. STEARNS.

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