US21574A

US21574A - Improved mode of preventing nuts from unscrewing

Info

Publication number: US21574A
Authority: US
Publication date: 1858-09-21
Anticipated expiration: 1875-09-21

Description

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UNITED STATES PATENT OEEICE.

SAMUEL NOBLET, OF HALIFAX, PENNSYLVANIA.

MPFEOVED MODE OF PREVENTING NUTS FROM UNSCREWING.

Speeifeation forming part of Letters Patent No. 21,574, dated September 21. 1858.

To all whom it' may cm1/cern:

Be it known that I, SAMUEL NOBLET, of Halifax, in the county of Dauphin and State of Pennsylvania, have invented a new and Improved Mode ot' Preventing'Nuts i'rom Unserewing from Bolts; and I do llerebydeelare the following to be a eorreet description of the saine, ret'erenee being had to the aecompanying drawings, in which- Figure l is a top View of a piece of timber having various modifications of my invention applied to bolt heads and nuts. Fig l represents a longitudiilai section ot' the same through the line tc :n of Fig. i.

The same letter marks the same part in both figuresv The nature oi' myinvention consists in preventing nuts or boltssheads :t'rom turning by inserting below them a vflexible inetalliewasher, one end of which is turned up against the head or nut and the other held inxmovably in plaee either by being sunk into the body oi the timber through which the bolt passes Aor by being turned down over some rigid p0rtion of the same, or by being held by another bolt, all as hereinafter described and shown.

In the drawingslhave shown va ri ous modes of applyingmy invention, aeeoring to the character ot the position where the bolt is to be used or the purpose it has to serve.

A shows the invention applied in a situationwhere the nut u, coming` np against a square shoulder, cannot be turned. In this ease the washer b is placed under the head ofthe bolt, and when this is screwed down .tight one end of thew'asheris turned up against the head `of the bolt and the other end is turned down over the edge of the timber, as shown.

I5 shows a boit having' a square head let into the wood. The washer b is placed u'nder the nut and one end turned up against the side. rihevother end is square up against the shoulder ofthe timber, as shown.

C shows a position where a piece of iron is -it fitting the square part of the bolt.

fined by a washer turned up against its side, the other end of said washer being turned down over the edge of the timber.

E represents an arrangement of bolt comv monly used upon bridges. The head of this bolt is let into the timber, and a large iron washer E of the form represented is placed below the nut e. lietween this washerand theuut-'is plaeed my thin met-allie washer, one end of which is bent up against the nut and the other end turned down over the straight-edge of washer E.

F represents a case where a east-iron stop or shoulder h" is attached to the wood for the purpose ot giving a bearing to the end ot the washer if, one end of which is turned up against the side of nutf and the other abuts against t-he east-iron stop 11"'.

G shows a ease Where a large east-iron Washer G is inserted under thel head of the bolt, the head being .let into the washer, as shown. Under the nut g is the thin washer b5, two corners of which are driven int-o the timber and one end turned up againstthe nut g.

II is the ease of a squa re bolthavinga round head. This bolt tits into a square holein the timber and the washer li has a square hole in This prevents the washer from turning, and one end of the washer being turned up aga-inst the nut 71. holds it securely in place.

I represents the ease in which one lwasher bis common to two nuts i i. A similar washer may be placed under the two heads of the bolts.

J is a round bolt with the head letinto the timber. The washer, which is not shown, is turned up against the nut and down over the edge of the timber, as before.

K is a square bolt, thehead ot' which is not let into the timber, and the washer applied as in the ease J.

I is the ease of a round bolt, the head oi' which is let in, and the washer seein-ed by driving three ot' corners into the timber, the fourth corner being turned up To hol d the nut, as shown. y

M shows a ease where the washer Zim' is turned over a beveled edge.

N is the ease where two bolt-heads are. held by a common washer Z111.

The Washers may be made of any iiexible metal and of the thickness required hy 'the the head or unt and the other held immovably degree of sil-ain to which theyarelikely to be in place, substantially as hereinbef'ore deexposed. scribed and represen Led.

Having thus fully described my invention In. Witness whereof l have hereunto sel'. my and shown a variety of eases in Whiel it may lizind this 31st. day of Angnsf, i858. he applied, what I claim, and desire to Seem-e by Letters Patent, is SAMUEL .NOBLET Preventing bolt-heads or nuts from turning Witnesses: by inserting below them a iexible metallic lTNO. G. THQMPSON, washer, one end of Whieh is turned up v gainst CHAs. F. STANSBURY.