US878990A - Chain. - Google Patents

Description

No, PBFQ, PATENTED FEB. 1]., 1908.

H. B. NEWHALL.

CHAIN.

APPLIUATxoN FILED MAB.9.1907.

A TTOHNE Y S 'UNITED HENRY B. NEWHALL, OF PLAINFIELD, NEWERSEY.

CHAIN.

No. masso.

Specication of Letters Patent.

Patented. Feb. li., 1908.

Application led March 9. 1907. Shlial No. 361475.

T 0 @il 'whom it muy concern:

Be it known that 1, HENRY B. NEWHALL, a Citizen of the United States, -and resident oi Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful rlinproveinents in Chains, oi' which the following is a speeiieation, reference beingl had to the drawing aeroiupanving and forming a. part ot the saine.

This invention relates to chains, and more iartirularljf, those. adapted to resist heavv ,.Ytrains, '1th, for instance, as loading Chains.

.in the accompanying drawings showing an illustrative einbmliment of this invention, in vfliieh the saine reference nunieralshovvs similar parts in the several iigures, VFigure 'i is a Side elevation of inv improved rhain, one ot' the links being shown in section. Fig. 2 is a perspective vier.v ot the square stock from which the links ot the. chain are made. l4` ig. 3 is across-section on the line 3-"3 of Fig. l. Fig, Ll is a side elevation of m v rhain similar to l.. l after it has been inv a testingr machine `resisting capacity gra hit-ally illustrating the oi tlie Chain.

In the illustrative embodiments of this invention shown in the drawing, 1 is the subL stantialhY square or rectangular stock from which the links 2, 2 are made. lhe stock is fed to ak eliain making maehine in the ordinary wav and is searl'ed at the ends 3, 3 and Welded as shown at 4 or the chain ma)T be made by hand.

lt is well known in the art oi chain making that substantially square stoek, tor the same diameter is stronger than round stock ot' equal diameter. 'to get a. chain whose links will bo of the maximum strength for the minimum rross-seetion of Stork l use as previouslyV noted substantially square stonk i and al'ter the ends of a link have been welded i round the Welded end 5 of the link, but in doinlr so i shorten somewhat the sides ti, (3 oll tue link and work this sur plusl metal into the. round welded end otv the link 5, making that end oi the link ot greater diameter than they squared end S, 'lhe central portion 7 of the round end 5 I preferably iorm of the greatest diameter and taper each side lil, l() from the eentral portion tothe square portion 9, El ot' the end S ofthe link. rlhis enlarged rounded )ort/ion 7 eontaining they weld does not interiere with the working of the eliain and is formed of just suilieient diameter to make this` end 5 of tho link of the same strength as the substantially square end, so that the Capacity of the entire eliain will be ol the substantially square stock l. in practice this is extreineljY advantageous, for hv Working suiiieient 'of the metal into the round portion of the link eontaining the weld to bring its resisting capacity up to that of the sulistantialljvv square. stoek, I, am enabled to make a chain that will have the full resisting capacity ot' the square stock. The links of such a Chain are homogeneous throughout, are of substantially the same-resisting eapaeitv and Capable of being subjected to immense strains withoutbreaking. inv invention have been put in testingnuu Sueh Chains made in aeeordanee with ehines ivherethey have been tested far bevond what they` would ever be subjected to.

, in prat-tice, one ot' such ehains being shown in Fig. l, where it will be seen that such an ahnormal and excessive strain was put. upon the chain bv the testing machine as to straighten or elongate the links 2. As shown in tlTls figure4 the ehain "has been drawn still or given such an abnormal test as `to lock the links together without, breaking them. making praetieallv a bar ot' the chain.

Having thus described this invention in Connection with the illustrative embodi-A ments thereof, to the details of which i do not desire to be limited, what is ,claimed as new and what is desired to secure h v Letters Patent is set forth in the appended elaiins.

1. A chain having a. series oi welded links a portion otl each link being substantially square in eross section, tbewvelded and of each link being round in cross-section and of greater diameter than the Corresponding portion of the squared end ot the link to make all portions ol` the links of the chain of the same resisting capacity.

2. A eliain having a series ol .Welded links a portion of eaeh iink being subsi'antialljY square in tross section, the welded end of eaeh link `being round in cross-section and of greater diameter than the eorrespomliug portion ot the square end otE the link. the round# od end ot' the link tapering from its renter towards eaeh side oi' the link to make all portions ot the links ol the eaain ol` the same resisting ea-paeitv.

3. A welded link For a eliain, one portion of said. link being substantially square-in oross-seetion, the other portion ol' the link being substantially rouni'l in eross-sertion and ot greater diameter than the eorresponding portion of the nonaireulnr part ol the l l tink, to vmake all portions of the link of the greater diameter than the non-circular art 'esame reisting capacity. Y of the 1ink,' to make all portions of the 'nk 4. .A -vwelde'd link for a chain,v a portionv of of the same resisti en aeity. the link being substantially rectangular inp HE R' B. vNEW/'HALL 6 Qzosser:,tion, the other portion of the link Witnesses:

being substantially round in eroas section, JEssIE B. KAY,

` .ende part of the-roundedportion being of 'ALAN M. JOHNSON.

Images