US171743A - Improvement in whiffletree-bolts - Google Patents

Description

UNITED STATES PATENT OFFICE. i

THOMAS SKELLY, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENTl IN WHIFFI-.ETREE-BOLTS. y

Specification forming part of Letters Patent No. 171,743, dated January 4, 1876 application filed March 24,1875. I

I tree with my improved bolt; and Fig.' 2, aA top view, showing the head of the bolt.

Whiflletree-bolts4 have usually been made with extended at heads, which have either been arranged longitudinally on the whifetree and let into the wood, or, if placed transversely, have been hammered down and bent onto the rounded top of the whiftletree, so as to conform, or nearly conform, with the rounded top ofthe same, the Wood in both cases being more or less Wounded, and the bending of the fiat head of the bolt tending to impair the same.

I overcome these objections by making the lhead a of the bolt or stem A of the form shown in the drawing, so that the under side of the said head lwill conform with the rounded top of the whifetree B throughout the greater portion of its extent, thereby obviating the necessity of hammering the head except at the extreme ends, where the metal is reduced in thickness, so that the slight hammering necessary at this point will not be sufficient to Wound the wood of which the whiffletree is composed. This head I make bysuitable dies during the operation of manufacturing the bolt, the dies being such as to impart the desired shape and finish to the head, so that no ling of the same is required after it has been fitted to its'place. y

I do not claim, broadly, a whiffletree bolt having an elongated tapering head; but

I claim as my invention- As a new article of manufacture, a Whife'- tree-bolt consisting of the threaded stein A and a head, a, tapered at its opposite ends, and swaged to coliform to the rounded head of the Whiffletree, all as set forth.

.In testimony whereof I have signed my name to this specication in the presence of two subs cribing witnesses.

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