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Publication numberUS1000715 A
Publication typeGrant
Publication dateAug 15, 1911
Filing dateDec 29, 1910
Publication numberUS 1000715 A, US 1000715A, US-A-1000715, US1000715 A, US1000715A
InventorsAlbebt D. Caywood
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Wall plug or socket.
US 1000715 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

A. D. GAYWOOD.

WALL PLUG OR SOCKET.

APPLIOATION FILED DEC. 29, 1910.

1,000,715. Patented Aug. 15, 1911.

WIVAQWHH m W jhvereir: 56 a ywoocZ ALBERT D. CAYWOOD, OF CHICAGO, ILLINOIS.'

WALL PLUG OR SOCKET.

Specification of Letters latent. P t nted Aug. 15, 1911.

Application filed December 29, 1910. Serial No. 599,920. x

To all whom it may concern:

Be it known that I, ALBriR'r D. CAYWOOD, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in \Vall Plugs or Sockets, of which the following is a specification.

My invention relates particularly to expansion wall'plugs or sockets adapted to be inserted in an opening in a wall and expanded therein to afford a fastening member.

My primary object is to provide an improved and simplified device of the character indicated, which can be cheaply manufactured and readily applied to afford a secure fastening, the device being of such a character as to obviate danger of loss of parts.

The invention is illustrated in its preferred embodiment in the accompanying drawing, in which Figure 1 is a side elevational view of an expansion shell or sleeve forming part of my invention, Fig. 2, an end elevational view of the sameFigs. 1 and 2 showing the shell in the form in which it is cast; Fig. 3, a longitudinal view showing the device after the wedge has been inserted and the serrated sleeve-sections, or furcations, have been closed together to enable the shell to be insertedin the wall-opening; Fig. 4, an end elevation of the device in the condition shown in Fig. 3; and Fig. 5, a sectional view showing the device secured in' an opening in the wall.

In the form illustrated, the'device comprises a shell A and a wedge B. The shell preferably comprises a tubular portion 1 having an intact or uncut wall, and two pairs of sleeve-sections, or furcations, 2 and 3 extending from one end of the intact sleeve-portion 1. The sleeve-portion 1 is preferably of circular form exteriorly, and ias an enlarged head 4 preferably provided with a tapering exterior surface 5. shell is preferably formed by a castingoperation, with the furcations in the open condition, the shell having an interior chamber 6 which is preferably of square cross-section, and the inner-surfaces 7 and 8 of the furcations forming extensions of the walls of the chamber 6. The walls of the furcations taper from approximately their point of junction 9 with the sleeve-portion 1 to their extremities, the walls being larger in a radial direction at the extremities of the The furcations than at the points of junction with the sleeve-portion 1. The furcations 3 are relatively narrow, and have tapering lateral surfaces 10, so that the furcations 3, while deeper or thicker in a radial direction at their extremities, are narrower in width at their extremities than they are at their points of junction with the sleeve-portion 1.

As appears from Fig. 2, the shell, after casting, is adapted to admit the wedge B, which is of square cross-section. The wedge has a tapered end 11, which points toward the split end of the shell. The shell is malleableized, and after the wedge-is inserted the furcations are squeezed together, the

furcations 3 lying between the furcations 2.

After the furcations are forced together, the device appears substantially as represented in Figs. 3 and 4, being of substantiallyuniform external diameter from the point of junction of the sleeve-portion 1' with the head-portion 4, thus adapting the device to be inserted in a bore or socket 12 in the wall 13. The head 4 of the device is provided with a bore, which is threaded, as indicated at 14.

The exterior circumferential surfaces of the furcations are serrated, or roughened, to increase the gripping action against the wall of the'bore 12 after expansion of the furcations. Thus, the furcations 3 have transverse notches affording serrations 15; and the furcations 2 have transverse notches affording teeth or serrations 16, the exterior surfaces of said furcations 2 being longitudinally grooved or cut-away, also, as indicated at 17 The completed device, as shown in Figs. 3 and 4, is adapted to be inserted in a bore 12 in a wall, with the head 4 outermost. By means of a punch, or drift, the wedge B may beforced longitudinally between the furcations, and owing to the tapering formation of the inner surfaces of said furcations, the furcations will be spread or separated and the serrations thereof caused to indent or enter the surrounding walls of the bore 12. The bore 12 is usually of slightly greater diameter than the shell, and the tapering head of the shell is adapted to fit snugly in the outer end of the bore. It will be understood that my construction provides for the expansion of the furcations of the shell before strain, which might tend to dislodge the shell, is placed upon it. After the shell has been secured in the bore provided for it,

the bolt or pipe 18 may be screwed into the threaded bore 14. If desired, the bolt 18 may be employed to force the wedge longi-.

tudinally to expand the furcations 2 and 3.

Fig. 2. Of course, thechamber 6 and the] internal surfaces 7 and 8 of the furcations are formed by a suitable core of square crosssection.

The foregoing detailed description has been given for clearness of understanding only, and no undue limitation should be understood therefrom, but the appended claims should be construed as broadly as permissible in View of the priorart. .l/Vhat I regard asvnew, and desire to secure by Letters Patent, is

1. A device of the character set forth comprising a shell having at one end two pairs of integrally formed furcations, one pair of said furcations having its members diametrically opposite each other and relatively narrow, and theother pair of furcations having its members embracing the first-named members in the non-expanded position of the furcations, in combination with an internally located wedge adapted to be moved longitudinally with relation to said furcations.

2. A device of the character set forth comprising a shell having a chamber with angular walls and two pairs .of furcations projecting from one end of said shell, said furcations enlarging radially fromtheir base portions to their extremities, one pair of said furcations having tapering lateral walls embraced by the internal lateral walls of the other pair of furcations, in combination with an internally located wedge of angular formation which is longitudinally movable with relation to said furcations.

3. A device of the character set forth, comprising a shell having at one end a threaded bore and at the other end two pairs of furcations provided with roughened exterior surfaces, one pair of furcations being smaller than the other pair and having tapering lateral surfaces embraced by the internal surfaces of the other pair of furcations, .in' combination with an internal wedge adapted to be forced longitudinally toward the extremities of the furcations to expand the furcations.

4. A device of the character set forth,

comprising a shell provided at one end witha head having a tapering external surface, said head having a threaded bore, and provided at the other end with a plurality of furcationshaving converging internal surfaces, said furcations provided with external serrations, in combination with a Wedge located in the shell and movable longitudinally between said furcations.

5. A device of the character set forth, comprising a malleable cast iron shell provided at one end with a threaded. bore and having a chamber with squared walls, said shell havingtwo pairs of furcations at its opposite end with converging flat inner surfaces and serrated exterior surfaces, one pair ofsaid furcations having converging lateral walls embraced by the internal walls of the other pair of furcations, in combination with an internally located wedge of substantially square cross-section. I

. ALBERT D. CAYWOOD.

In presence of JOHN WILsoN, R. A. SCHAEFER.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2424602 *May 15, 1945Jul 29, 1947Shellmar Products CorpFlush rivet
US2670007 *Oct 18, 1949Feb 23, 1954Adams Paul LValve float coupling
US3332312 *Feb 16, 1967Jul 25, 1967Phillips Drill CoExpansion stud anchor
US3861270 *Sep 28, 1972Jan 21, 1975Hilti AgStraddling dowel
US4259890 *Jan 15, 1979Apr 7, 1981Walsh James HRemovable anchor assemblies
US4312604 *Jul 17, 1980Jan 26, 1982Ingersoll-Rand Co.Friction rock stabilizer set, and a method of fixing a friction rock stabilizer in an earth structure bore
US4408938 *Aug 24, 1981Oct 11, 1983Maguire James VExpansion sleeve
US4653132 *Dec 31, 1985Mar 31, 1987Kensetsu Fastener Kabushiki KaishaMethod of making plug-containing type internally threaded anchor
US4729606 *May 14, 1987Mar 8, 1988Kabushiki Kaisha Tokai Rika Denki SeisakushoApparatus for mounting a wheel cap
US4893973 *Sep 15, 1988Jan 16, 1990Hilti AktiengesellschaftExpansion dowel with axially extending projections
US5156507 *Apr 29, 1991Oct 20, 1992Northwest Design ProductsExpansible fastening device
US5181816 *Oct 26, 1990Jan 26, 1993Walsh James HRemovable anchor tube assembly
US5342157 *Jul 9, 1993Aug 30, 1994Fischerwerke Artur Fischer Gmbh & Co. KgImpact-type expansible plug for anchoring in a cylindrical drilled hole
US5393179 *Feb 22, 1994Feb 28, 1995Bane; Robert F.Anchor with drive pin and threadable bolt
US5791846 *May 29, 1997Aug 11, 1998Hilti AktiengesellschaftExpansion dowel
US7744320Feb 29, 2008Jun 29, 2010Illinois Tool Works Inc.Anchor bolt and annularly grooved expansion sleeve assembly exhibiting high pull-out resistance, particularly under cracked concrete test conditions
US7811037Nov 13, 2006Oct 12, 2010Illinois Tool Works Inc.Anchor bolt and annularly grooved expansion sleeve assembly exhibiting high pull-out resistance, particularly under cracked concrete test conditions
US8302276May 20, 2010Nov 6, 2012Illinois Tool Works Inc.Anchor bolt and annularly grooved expansion sleeve assembly exhibiting high pull-out resistance, particularly under cracked concrete test conditions
US8434980 *Sep 25, 2010May 7, 2013Yow Cheng Co., Ltd.Expansible anchor assembly and its fastening adaptor
US8439614 *Jun 10, 2010May 14, 2013Black & Decker Inc.Drop-in anchor
US8491244Dec 28, 2009Jul 23, 2013Illinois Tool Works Inc.Anchor bolt and annularly grooved expansion sleeve assembly exhibiting high pull-out resistance, particularly under cracked concrete test conditions
US8511035 *Apr 20, 2009Aug 20, 2013GŁnther ZimmerAnchor for mounting in cover panels
US8672595 *Jun 25, 2008Mar 18, 2014Eugen SchnarrExpansion anchor and method for the preferably surface-near anchoring in an anchoring base
US8974163Sep 8, 2009Mar 10, 2015Mechanical Plastics Corp.Wedge-type drop-in anchor assembly
US20100129172 *Jun 25, 2008May 27, 2010Goettlich JuttaExpansion anchor and method for the preferably surface-near anchoring in an anchoring base
US20120076615 *Sep 25, 2010Mar 29, 2012Tai-Ping HsuExpansible anchor assembly and its fastening adaptor
WO2007145753A2May 11, 2007Dec 21, 2007Illinois Tool WorksAnchor bolt and annularly grooved expansion sleeve assembly exhibiting high pull-out resistance, particularly under cracked concrete test conditions
Classifications
U.S. Classification411/57.1
International ClassificationF16B13/12
Cooperative ClassificationF16B13/124
European ClassificationF16B13/12B