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Publication numberUS411000 A
Publication typeGrant
Publication dateSep 17, 1889
Filing dateJul 12, 1889
Publication numberUS 411000 A, US 411000A, US-A-411000, US411000 A, US411000A
InventorsEuclid Anderson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Euclid anderson
US 411000 A
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Description  (OCR text may contain errors)

(No Model.) 0



NO. 411.000. Patented Sept. 17, 1889.

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SPECIFICATION forming part of Letters Patent No. 411,000, dated September 17, 1889.

Application filed July 12, 1889. Serial No. 317.270. (No model.)

To all whom it may concern:

Be it known that I, EUCLID ANDERSON, a citizen of the United States, residing in Peekskill, county of VVestchester, and State of New York, have made a new and useful invention in Bolt-Heads, of which the following is a specification. i

My invention `relates particularly to the form of bolt-heads or nuts as concerns their adaptability to the use or application of a wrench.

The most obvious and usual method of forming a bolt-head, to be turned by the use of a wrench, is to makeit four-sided or Square. This form offers the greatest possible mechanical advantage, but in many cases cannot be used because of the room required for the swing of the wrench. The usual method of overcoming this obj ection is to increase the number of sides from four to six or more; but by so doing much of the mechanical advantage connected with the square head is lost, for unless the wrench fits more or less exact the corners soon become rounded and their efficiency impaired.

The object of my invention is to produce a bolt-head or nut havinggthe advantages of the square nut and at the same time possessing even to a greater degree than the hexagonal form the property of being manipulated by a wrench in a contracted place. I attain this object in the manner shown in the accompanying drawings, in which- Figures l and 2 are an elevation and plan that its sides form an angle of forty-five dev f grees with the sides of the other, their. projection on a plane perpendicular to their common aXis showing the symmetrically-angled figure shown in Figs. 2 and 4:. This forms virtually an octagonal or eight-sided head, yet retains the desirable features of the simple square nut.

It is obvious that where height is no objection several sections of the head may be used. Thus three sections symmetrically arranged would give twelve sides, and so on.

For most purposes I find that by using square rods or pieces for the heads or nuts and turning therein a groove, as shown at a in Fig. 6, the two sections can on being heated be twisted into position shown in Fig. l without interfering materially with the proper strength. WVhere a very good quality of metal is used, the twisting can be done without heating.

Where the extra height due to the groove is objectionable, the form may be produced by milling or other methods. Fig. 5 shows a head formed in this way without a groove.

Bolt-heads or nuts of this form are not of course desirable in all cases, on account of the increased height pbut for many purposes they are Very desirable. The form is well suited for most kinds of set-screws and for the bolting together of narrow flanges, &c.

I c1aim- 1. A bolt-head formed from one pieee of metal into two square sections, one above the other, one section having its sides stand at of the other, substantially as shown.

2. A bolt-head formed from one pieee of metal into two 'or more sections, arranged one above a'nother the relative position of their sides being sy nmetrically angled, Substantially as shown and described.




an angle of forty-five degrees with the sides

Referenced by
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US2620704 *Aug 31, 1950Dec 9, 1952Evans Gerald TLocating key
US3027796 *May 21, 1957Apr 3, 1962Shewmon Daniel CBolt with driving head shearable at pre-determined torque
US4189976 *Jun 29, 1978Feb 26, 1980Fargo Manufacturing Company, Inc.Dual head fastener
US6398785 *Apr 13, 1999Jun 4, 2002Joseph Edward CarchidiApparatus for rigidly fixing craniomaxillofacial tissue grafts and bone plates
US6699251 *Apr 3, 2000Mar 2, 2004Orthofix S.R.L.Bone screw for external fixators
US7632194 *Dec 12, 2007Dec 15, 2009Taylor Made Golf Company, Inc.Movable weights for a golf club head
US7753806Jan 23, 2008Jul 13, 2010Taylor Made Golf Company, Inc.Golf club
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US8429875 *May 11, 2010Apr 30, 2013Dameon BartlettConcrete foundation form screw and method of use
US8430763May 10, 2012Apr 30, 2013Taylor Made Golf Company, Inc.Fairway wood center of gravity projection
US8562457May 27, 2011Oct 22, 2013Taylor Made Golf Company, Inc.Golf club head having movable weights
US8591353Dec 17, 2012Nov 26, 2013Taylor Made Golf Company, Inc.Fairway wood golf club head
US8663029Feb 21, 2012Mar 4, 2014Taylor Made Golf CompanyGolf club
US8821312Feb 15, 2012Sep 2, 2014Taylor Made Golf Company, Inc.Golf club head having a stress reducing feature with aperture
US8827831Jul 5, 2012Sep 9, 2014Taylor Made Golf Company, Inc.Golf club head having a stress reducing feature
Cooperative ClassificationF16B23/00