US1270734A - Nut-lock. - Google Patents

Description

B. W. HENNINGS.

NUT LOCK.

APPLICATION FILED MAY \9. 1910. RENEWE D DEC- 3.1917.

Patented J une 25, 19 18.

I UNITED STATES PATENT OFFICE,

BRUNO ,W. or FRESNO, oenrronma, AssiGNon or oltnroiinfrri T0 DONALD nonnnrson, or SAN rnenorsco, CALIFORNIA, .AND ONE-FOURTH T0 enoncn r.

BEVERIDGE, or rnnsno, QALIFORNIA.

NUT-LOCK.

Patented J1me25, 1918 Application filed May 19, 1910, Serial No. 562,279. Renewed December3, 1917." Serial No. 205,235.

To all whom it may concern:

Be it known that I, BRUNO WV. .I'IENNING, of Fresno, California, have invented certain new and useful Improvements in Nut-Locks, whereof the following is a specification.

This invention relates to nut locking devices, and is designed to permit the locked nut to be released and removed without mutilating the nut, the bolt or the locking device. In carrying out the invention I form a housing of a band of resilient metal, which housing extends across under the nut with a hole for the passage of the bolt, up at the sides of the nut, and over the top thereof with holes for the passage of the bolt. The top portions, or ends of the band, overlap on the top of the nut. 'The housing is so proportioned that, when free to do so, the overlapping ends will tend to draw apart, and the sides of the holes through them will engage or clamp against the bolt and jam and prevent any rotation thereof. The details of formation will appear hereinafter in connection with the description of the accompanying drawing, in which I have illustrated the device in the form which I have found, in practice, to be most effective.

In the drawing Figure 1 is a perspective view of the metal housing by itself, ready for use.

Fig. 2 is a sectional elevation showing two plates to be fastened together, with a bolt and nut, and the locking housin applied thereto, before the nut is screwed ome.

Fig. 3 is a similar view to Fig. 2, but after the nut is screwed home.

Fig. 4 is a top view of the housing by I itself, as it appears in Fig. 3.

, forming this office.

In the figures 1 and 2 are two pieces of material to be bolted together, and 3 is the bolt for per- 4 is the nut on the bolt. A represents the housing comprising the bottom plate 5, the side plates 6 and the overlapping top plates 7. The top and bottom plates, 7 and 5, are perforated with holes of a size to easily pass the bolt 3. The parts are so proportioned that normally the bolt passes. freely through them, without binding, and the bottom plate 5, is curved downwardly, as seen in Fig. 2. When now, the nut is screwed home, the bottom plate is flattened out, as seen in Fig. 3; this throws the side plates outward, as also seen in that figure, and thereby draws the top plates outward, causing the edges of the. holes therethrough to engage the bolt, and act as a clamp or jam for the nut. The outer edges of the holes through the top plates may be chamfered, as shown at 8, whereby they bind even more effectively against the threads of the bolt. The housing A may be made of resilient material, and may be used many times. I11 use, the wrench applied to the nut to turn it, will hold the sides of the housing against the sides of the nut, and thus maintain the bolt free from the edges of the holes, but when the nut is screwed home, and the wrench removed, the side plates spring outward and cause the edges of the holes to engage the bolt. Upon reapplying the wrench that engagement is broken and the nut may be removed.

I claim 1. In a nut lock, a housing comprising bottom, side and top plates, the bottom plate having its outer wall convexed and the said bottom and top plates having apertures for the bolt.

2. In a nut locking device, a housing comprising a bottom, side and top plates, the said bottom and top plates being perforated for the passage of a bolt, and means for forcing the top plates outwardly into clamped engagement with the bolt.

3. In combination with a bolt and nut, a nut-lock comprising a bottom plate and in tegral side and top plates, the said bottom and top plates being apertured for the passage of a bolt, the said top plates having bo t engaging edges, and said bottom plates being convex to form a lever for bringing said bolt engaging edges of the top plates into engagement with said bolt.

4. In combination with a bolt, a nut-lock comprising a bottom plate and integral side and top plates, said top and bottom plates being apertured for the passage of a bolt, the top plates having knife-like bolt engaging edges, and the bottom plate being convex, a. nut forcing said bottom plate on the member to which said nut-lock is to be applied, and the said top plates being moved outwardly and radially through the movement of the bottom plate.

5. In a nut look, a housing comprising bottom, side and overlapping top plates, the top and bottom plates having circular openings to receive a bolt, the Walls of the QPGIP.

ings in the overlapping portions. comprising knife like edges said bottom plate being rectiohsj of'the top plates.

curved downwardly whereby the knifelike edges are brought into engagement with the opposite sides of the bolt when pressure brought to bear onthe bottom plate.

6. In anut look, a housing comp-rising bottom, side and overlapping top plates, the

bottom and-top plates having circular openings to receive a bolt,'the lower plate being Copies of this patent may be obtained for curved downwardly, and said plates being arranged whereby flattening of the bottom plate will cause a movementin opposite di- Intestir'nony that I claim the foregoihg I have hereto set my hand in the presence of Witnesses this 29thof April, 1910.

BRUNO W. HENNING. Witnesses:

W. S. BATEs,1

D. B. RICHARDS.-

five cents each, byjaddressing the Gommissioneraof Patents. Washlngtomhfi)? I a

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