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Publication numberUS565049 A
Publication typeGrant
Publication dateAug 4, 1896
Filing dateFeb 19, 1895
Publication numberUS 565049 A, US 565049A, US-A-565049, US565049 A, US565049A
InventorsCharles E. Test
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Charles e
US 565049 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

(No-Model.)

G. E. TEST. PROCESS OF MAKING RIVETS, STUDS, &c.

No. 565,049. Patented Aug. 4, 1896.

WITNESSES. HVVENTU/i'- Cf/La/rZes E I63 0,

A TTOEWEY.

UNITED STATES PATENT Orricn.

CHARLES TEST, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE INDIAN- APOLIS CHAIN AND STAMPING COMPANY, OF SAME PLACE.

PROCESS OF MAKING RIVETS, STUDS, 84C.

SPECIFICATION forming part of Letters Patent No. 565,049, dated August 4, 1896.

Application filed February 19, 1895- Serlal No. 538,928. (No specimens.)

To all whom it may concern:

Be it known that I, CHARLES E. TEST, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Processes of Making Rivets, Studs, &c., of which the following is a specification.

It is very desirable in the manufacture of link chains of that variety commonly em ployed in driving sprocket-wheels, which are made up of flat links riveted together, that the wearing-surfaces of the rivets should be comparatively hard, to resist the effects of the wear thereon, and that the central portion which extends through to the ends should be comparatively soft to facilitate riveting. There are also many other uses to which rivets of this character can be advantageously applied, and other analogous devices are similarly improved. To produce rivets, studs, and analogous mechanical parts with hardened wearing-surfaces and softer centers is the object of my said invention, which consists in a process of treatment of the previously perfectly formed rivets, as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters of reference indicate similar parts, Figure l is a perspective view of a fragment of chain such as heretofore referred to, in which rivets of the character specified are used; Fig. 2, a transverse sectional view of said chain on the dotted line 2 2 in Fig. 1; Fig. 3, a side elevation of a rivet separately; and Fig. at, a perspective view of a rivet with protecting coverings or caps on the ends ready for treatment, a portion of one of the caps being shown as broken away to illustrate this feature more clearly.

The process consists in first forming the rivets complete from soft steel in the form desired, as, for instance, shown by Fig. 3 of the drawings, then placing coverings on the ends, and then carbonizing or charging with carbon the exposed central portion of the rivet by any usual treatment for that purpose, such as heating the same and immersing it in a hardening liquid or compound. The coverings are shown as small caps, and, in the pre ferredway of carrying out my improved process, as illustrated in Fig. 4, are placed upon the ends of the rivet. monly of a difiierent metal, such as copper, as they are more easily formed and handled when made of such a metal; but of course they may be made in any way or of any material suitable for the purpose, or any other suitable covering may be substituted without departing from my invention.

Having thus fully described my said invention, whatI claim as new, and desire to secure by Letters Patent, is-

That process of forming rivets havinghardened centers and softer ends, which consists in first forming the rivet of metal of substantially the degree of hardness which it is desired the ends shall have, then covering said ends with closely -fitting caps of material adapted to protect them from the action of the hardening process, then charging with carbon the exposed central portion by heating and then immersing inahardening liquid or compound, and then removing said caps, all substantially as set forth.

In witness whereof Ihave hereunto set my hand and seal, at Indianapolis, Indiana, this 16th day of February, A. D. 1895.

CHARLES E. TEST. [n s] \Vitnesses:

CHESTER BRADFORD, J AMES A. WALSH.

These caps are com- 0

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2508784 *Nov 13, 1948May 23, 1950Oregon Saw Chain Mfg CorpPower saw chain
US2945713 *Sep 24, 1956Jul 19, 1960Hyval Products CoSwivel type clamp
US3370993 *Mar 18, 1965Feb 27, 1968Babcock & Wilcox CoHeat treatment of metals
US4099424 *Jun 24, 1976Jul 11, 1978Pemberton Robert EChain drive
US5475993 *Jun 14, 1994Dec 19, 1995Kuo; Li-TsaoLinkage lock device
US5729882 *Mar 12, 1996Mar 24, 1998Sandvik AbMethods of assembling a chain and a rivet for use in such assembly
US7563064Dec 6, 2005Jul 21, 2009Blount, Inc.Shear resistant rivet and saw chain
US7891279Dec 4, 2006Feb 22, 2011Blout, Inc.Shear resistant rivet and saw chain
US7891925Jun 18, 2009Feb 22, 2011Blount, Inc.Shear resistant rivet and saw chain
US8734076 *Jun 21, 2011May 27, 2014Schaeffler Technologies AG & Co. KGRivet and method for riveting components
US20110315504 *Jun 21, 2011Dec 29, 2011Schaeffler Technologies Gmbh & Co. KgRivet and method for riveting components
US20130121788 *Nov 2, 2012May 16, 2013Chuan Li Precise Industries Co., Ltd.Bicycle Tooth Plate Rivet
CN101356035BDec 5, 2006May 30, 2012布楼恩特公司Shear resistant rivet and saw chain
WO2007067901A2 *Dec 5, 2006Jun 14, 2007Blount IncShear resistant rivet and saw chain
Classifications
Cooperative ClassificationB21K1/58