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Publication numberUS732590 A
Publication typeGrant
Publication dateJun 30, 1903
Filing dateJan 27, 1902
Priority dateJan 27, 1902
Publication numberUS 732590 A, US 732590A, US-A-732590, US732590 A, US732590A
InventorsAugust Scholer
Original AssigneeAugust Scholer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 732590 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 732,590. PATBNI'BD JUNE 30, 1903 A. SCHOLER.


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OOOOOOO UNITED 'STATES Patent-ea June 3o, loos;

PATENT Qualen;



SPECIFICATION forming part yof Letters Patent N o. 732,590, dated June 30, 1903.

Application led January Z7, 1902. Serial No. 91,364. (No modeLl l To all whom it' may concern:

Be it known that I, AUGUST SCHOLER, a citizen of the United States of America, residing at Pittsburg, in the county of Allcgheny'and State of Pennsylvania, have invented certain new and useful Improvements in Lock-Nuts, of which the following is a specification, reference being had therein to thel accompanying drawings.L j

This invention relates to certain new and useful improvements in lock-nuts, and has for its object a device of this character wherein the nut contacting with the object to be locked shall be held in a manner so as to effectually prevent the same from working or jarring loose. v Y

My invention has for its further object a device of this character which shall be extremely simple in construction,comparati vely inexpensive to manufacture, and highly etlicient in its use.

The invention further resides in the novel combination and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forminga partof this specification, and wherein like numerals of reference indicate like parts throughout the several Views,in which- Figure l is an elevation of a bolt, showing my improved lock-nut secured thereto and in central vertical section. Fig. 2 is a plan view ofthe outer face of the securing-nut. Fig. 3 is a like view of the inner face of the locking-nut.

My'invention aims to effect an engagement with the securing-nut contacting with the articles to be locked in a manner that when the lock-nut is actuated to form an engagement Y with the securing-nut the latter will exert seat has its walls tapering inwardly toward the threaded opening and is so arranged that the flat portion 4 will be formed between the walls of the depression or seat and the portion ofthe bolt in a manner as will cause its ridge or bead 7 to engage the seat or depression 4, the nut 5 then being tightened, which will cause the eccentric ridge or bead to contact with the seat or depression and effect a secure engagement. It will be noted that the ridge or bead 7 has its edge slightly rounded,

threaded opening 3. The outer face of this a as at 8, corresponding to a like curved portion 9 in the seat or depression. It vwill also be noted that the taper ol' the bead or ridge'is such as will permit the entire periphery thereof toengage the walls formed by the seat or depression. Thus when the parts are ina locked position the entire periphery of the bead is in contact with the inner circumferencev of the seat or depression, at which time the inner face of the locking-nut 5 and the outer face of the securing-nut will be found to be in contact.. Y While the accompanying drawings illustrate the most practical form of my invention,

still it is obvious that minor changes in the details of construction and combination of parts may be made without departing from the general spirit and scope of the invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, isi l. In a lock-nut, the combination ofa bolt, of a securing-nut provided with'a central boltopening and having an eccentrically-arranged depression around said bolt-opening, the walls of said depression tapering inwardly to the bolt-opening and having a flat portion formed between the same and the said opening and a locking-nut having an eccentric projection surrounding a central bolt-opening therein, said projection having its outer walls tapered outwardly toward the periphery of said nut and the upper portion of said projection be- IOO ing fiat, said fiat portion adapted t0 be received within the depression of the securingnut and to engage with the flat portion thereof, substantially' as described and for the purpose-set forth. p

2. In a nut-lock, the combination of a bolt, of a securing-nut provided with a central boltopeningand having an eccentricallyarranged depression around said boltopening,the walls of said depression tapering inwardly to the bolt-opening, the bottom of said depression being Hat, and a curved portion formed between the said tapering and Hat portions, and a locking-nut provided with a central boltopening and having an eccentric projection

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6609867 *Oct 11, 2001Aug 26, 2003Hard Lock Industry Co., Ltd.Anti-loosening nut assembly
US6786690 *Jun 19, 2002Sep 7, 2004Fusao YamadaLocking fastener
US7946021Sep 5, 2009May 24, 2011Thomas J. KochanowiczDouble safety fastener
US20070012127 *Jun 10, 2004Jan 18, 2007Frank MortonAnti-backlash nut assembly for a lead screw
Cooperative ClassificationF16B39/128