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Publication numberUS571042 A
Publication typeGrant
Publication dateNov 10, 1896
Filing dateMay 25, 1896
Publication numberUS 571042 A, US 571042A, US-A-571042, US571042 A, US571042A
InventorsAndrew Edqiiist
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Clamp-joint
US 571042 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

` Ai. EDQUIST.

CLAMP JOINT.

(No Model.)

- Patented Nov. 1o, 1896.

UNITED STATES ATENT OFFICE.

ANDREV EDQUIST, OF DENVER, COLORADO.

CLAM P-JOINT.

SPECIFICATION forming part of Letters Patent No. 571,042, dated November 10, 1896.

Application iiled May Z5, 1896. Serial No. 592,967. (No model.)

To all whom t may concern:

Beit known that I, ANDREW EDQUIs'r, a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Clamp-Joints; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same,

reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specication.

My invention relates to clamp-joints5 and it consists, primarily, in a clamping-bar having a suitably-threaded tightening-screw at one or both ends and at each end passing through an opening in a lune-shaped jaw provided with a corresponding female screw when required, the convex sides of said jaws being turned toward each other and having a curve of greater radius than the curve of the concave recesses in the wood in which they are placed.

In the drawings, Figure l is a plan view of a clamp-joint of the right-and-left-screw variety embodyingmy invention. Fig. 2 is a sectional view thereof on the line 2 2 of Fig. 1. Fig. 3 is a view showing a modification of the single-screw variety, and Fig. l is a perspective view of one of the clamping-jaws.

The letters a and a represent two luneshaped clamping-jaws, each having a central opening o for the passage of the ends of bar b, said opening being threaded conformably to the right-and-left screws s and s at either end of bar b, their convex sides turned toward each other when in place on bar b. Two

spurs c and c project from the lower edge of the convex surface of each jaw adjacent to the openin g o. One or both ends of bar b are flattened, or suitable holes are pierced at its middle for the operating-wrench. The modified form shown in Fig. 3 has screw s only, the other end of bar b passing loosely through an unthreaded opening in jaw d and being provided with a head h, .against which the concave side of jaw a plays.

In operation circular recesses d and d are made in the boards w and w to be joined, connected by the channel e, the curve of said recesses being of less radius than the curve of the convex surface of the clamping-jaw. The clamp is then placed in the recesses thus formed and suitably tightened by the Wrench. As they tighten, the jaws begin to draw first at their extremities, and when tightened to their limit the strain will be equally distributed over their convex surface. In tightening, the spurs enter the wood and hold the clamp in place in the event of shrinkage.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

The combination of a joint clamp and holder having convex jaws and means for drawing the jaws together with the boards to be joined having concave recesses adapted to receive the jaws, the curve of the recesses being of less radius than the curve of stantially as described.

InV testimony whereof I affix my signature in the presence of two witnesses.

ANDREW EDQUIST.

the jaws, sub- VVitnesses GEORGE Errrcn, FRANK DoBBERsTEIN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2832101 *Jul 22, 1955Apr 29, 1958Lamteck Corp Of AmericaPaneled structure
US3064321 *Oct 14, 1957Nov 20, 1962Homer C RoseFastenings
US3192981 *Oct 3, 1962Jul 6, 1965Oliver Harold Le RoyBarrel nut
US3279830 *Apr 5, 1965Oct 18, 1966Ibex Dev CoWood fastener
US3943818 *Feb 7, 1974Mar 16, 1976Pryor Roy RRailroad tie
US3958375 *Apr 1, 1974May 25, 1976Tully Daniel FPrefabricated hyperbolic paraboloid roof
US4525974 *Nov 3, 1981Jul 2, 1985Emil Steidle Gmbh & Co.Wood beam
US4976565 *Jun 11, 1990Dec 11, 1990Alexander StefanDraw bolt apparatus for countertop assemblage
US5934819 *May 14, 1997Aug 10, 1999Mangold; AndreasBolted connection for connecting two profiles
US6663314 *Jan 23, 2002Dec 16, 2003Airbus FranceDevice for joining a panel and a structure, able to transmit significant forces
US7228935 *Sep 10, 2003Jun 12, 2007Andreas Stihl Ag & Co. KgAttachment pin for an exhaust-gas muffler
US7775479Jan 18, 2008Aug 17, 2010Airbus Deutschland GmbhLining framework for an aircraft
US7895810Jan 18, 2008Mar 1, 2011Airbus Deutschland GmbhCrash paddle for reinforcing a primary fuselage structure of an aircraft
US8162561 *Jun 24, 2009Apr 24, 2012Milan PiljaIntegrated joiner improvements
US8220744Jan 16, 2008Jul 17, 2012Airbus Deutschland GmbhFitting for introducing high forces into a fuselage cell of an aircraft
US8382038Jan 11, 2008Feb 26, 2013Airbus Operations GmbhDevice, in particular connection rod, for bracing a fuselage structure of an aircraft and/or for fastening a component
US8408492Jan 15, 2008Apr 2, 2013Airbus Deutschland GmbhFloor panel for forming a loading area in a cargo hold of an aircraft
US20040087011 *Oct 27, 2003May 6, 2004Ghd, Inc.Method and apparatus for solids processing
US20050235596 *Jun 13, 2003Oct 27, 2005Alfredo PegoradoManufacturing process for wooden base window and door frames, and the frames manufactured by means of the process
US20080173755 *Jan 15, 2008Jul 24, 2008Herrmann BenthienFloor panel for forming a loading area in a cargo hold of an aircraft
US20080173756 *Jan 18, 2008Jul 24, 2008Herrmann BenthienLining framework for an aircraft
US20080173758 *Jan 18, 2008Jul 24, 2008Herrmann BenthienCrash paddle for reinforcing a primary fuselage structure of an aircraft
US20080173761 *Jan 16, 2008Jul 24, 2008Herrmann BenthienFitting for introducing high forces into a fuselage cell of an aircraft
US20100296861 *Jun 24, 2009Nov 25, 2010Milan PiljaIntegrated Joiner Improvements
US20110108668 *Jan 11, 2008May 12, 2011Hermann BenthienDevice, in particular connection rod, for bracing a fuselage structure of an aircraft and/or for fastening a component
US20120045273 *Mar 11, 2010Feb 23, 2012Getzner Werkstoffe Holding GmbhConnecting device
CN101626952BJan 11, 2008Jul 17, 2013空中客车运营有限公司Device, in particular connection rod, for bracing a fuselage structure of an aircraft and/or for fastening a component
DE102007011621B4 *Mar 9, 2007Oct 7, 2010Airbus Deutschland GmbhVorrichtung, insbesondere Samerstange, zur Aussteifung einer Rumpfzellenstruktur eines Luftfahrzeugs und/oder zur Befestigung eines Bauteils
WO2008090039A1 *Jan 11, 2008Jul 31, 2008Airbus Operations GmbhDevice, in particular connection rod, for bracing a fuselage structure of an aircraft and/or for fastening a component
Classifications
Cooperative ClassificationF16B12/2009