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Publication numberUS913024 A
Publication typeGrant
Publication dateFeb 23, 1909
Filing dateJan 28, 1905
Priority dateJan 28, 1905
Publication numberUS 913024 A, US 913024A, US-A-913024, US913024 A, US913024A
InventorsWilliam M Meacham
Original AssigneeWilliam M Meacham
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Clamp for electrical and other fixtures.
US 913024 A
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Description  (OCR text may contain errors)




Patented Feb. 23, 1909.

To all whom it may concern:




Specification of Letters Patent.

Patented Feb. 23, 1909.

Application filed January as, 1905. Serial No. 243,024.

In the drawings, wherein I have indicated an operative embodiment of my invention in use in various situations; Figure 1 is a central vertical section of my device as applied to an electrical fixture. Fig. 2 is a face View of a clamp embodying my invention. Fig. 3 is a vertical section showing the application of my clamp to a lamp socket. Fig. 4 is a similar view showing the application of my clamp to a pipe.

Throughout the drawings like numerals of referencerefer always to like parts.

In general the article of manufacture which constitutes the salient feature of my invention consists of a plate, preferably of metal, having an aperture therein adapted to receive a suitable article and having teeth, preferably integral spring parts of the plate, forming a suitable part of the edge of the aperture, and arranged to yield to enlarge the aperture wheua suitable article is passed therethrough in one'Tdirection and to grip the article for movement therewith tending to diminish the aperture when the article is sought 'to be withdrawn through the aperture in the other direction, so that the insertion of the article is made easy and its withdrawal difficult.

In the drawing 5 indicates a plate, preferably of' relatively thin resilient metal, and preferably of generally circular shape, having formed at its center an aperture 6 bounded entirely or throughout a suitable substantial part of its perimeter by teeth,

preferably having sharp cutting edges, in-

clined or inclinable at an angle to the axis of the aperture perpendicular to the plane of the plate such that when an article of suitable size and contour is inserted through the aperture in one direction said teeth yield outwardly to permit the ready passage of the article, but such that when the article is sought to be withdrawn said teeth bite or clutch sharply upon the surface of the article to prevent axial movement of'the article relative to the teeth. Therefore, since the retraction of the article gripped as aforesaid would draw the spring teeth in to present an aperture of less diameter than that of the article such axial withdrawal of the article is positively prevented.

In the specific construction shown the teeth are provided by cutting slots 7 into the body of the metal radiating from the aperture at suitable distances apart, to form between the slots springs 8, having sharp edges at 9 to form teeth. Preferably the spring teeth 8 are permanently bent adjacent their free ends to present toward an axial line through the aperture 6 perpendicular to the general plane of the plate, the sharp tooth edges 9, making the total size of the aperture 6 in the completed article slightly larger than the area of the metal removed to make the aperture 6, but slightly less than as the body of the plate. For .purposes of' strength Iprefer that a beading or rib 10, preferably of circular configuration be rovided upon the plate surrounding the radially outward ends of the slots 7.

The details of construction of the article described I believe to be new and p'atentable and may claim, but I desire it to be understood and have endeavored to impress that my invention has a broader hase-susceptible of embodiment in various orms other than that herein s ecifically shown, and I do not desire, there ore, to be understood as limiting the broader conception of my invention to the specific device herein illustratively shown, advantageous though I consider its construction to be.

In Fig. 1 A indicates any suitable support having therein an aperture (1. B indicates an insulating bushing or tube comprising a stem 6 taking through the aperture (1 and protruding from one side thereof, and a head I) at the opposite end abutting against the edges of aperture a. My clamp is slipped upon the protruding end of stem b until its body abuts against/the support A, so that the tube B may not be withdrawn directly. A screwing motion is usually necessary to detach the clamp.

In Fig. 3 A indicates a support, apertured as at a to receive the stem 0 of a lamp socket C, the body whereof forms a shoulder a at the end of the stem. A clamp plate applied as above described to the portion of the socket protruding through the support retains the socket in place.

In Fig. 4: A indicates a horizontal support through an aperture a wherein a pipe or other article passes. A clamp applied to the pipe and resting on the support serves to suspend the pipe and act as a canopy to concea the aperture a Other-and further uses and applications of my invention will readily occur, and I do not intend to intimate that the uses to which I have shown the clamp applied are the only employments of which devices embodying 1. As an article of manufacture, a clamp plate for electrical insulating bushings and the like, having an aperture therein adapted to receive the bushing, integral spring teeth having sharp edges forming part of the edge of the aperture, and a rib surrounding the teeth.

2. In combination with a support having an aperture therein, an electrical fixture having a stem passing therethrough, and a clamp for retaining the stem against withdrawal, comprising the disk 5, having an aperture 6 to receive the stem, teeth 8 forming the edge of said aperture and a rib 10 surrounding the teeth 8.

In testimony that I claim the foregoing as my own, I aflix my signature in presence of two witnesses.


In presence of GEO. T. MAY, J r., MARY F. ALLEN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2471625 *Aug 18, 1944May 31, 1949Western Electric CoElectrical mounting device
US2502291 *Feb 27, 1946Mar 28, 1950Lawrence H TaylorMethod for establishing electrical connections in electrical apparatus
US2618677 *Aug 1, 1951Nov 18, 1952Crouse Hinds CoDuplex electrical wall receptacle
US2737635 *Nov 8, 1952Mar 6, 1956Progress Mfg Company IncFluorescent lamp socket mounting
US2754717 *Feb 11, 1953Jul 17, 1956United Carr Fastener CorpResilient, threadless sheet metal fastener for use with threadless studs
US2835060 *Jul 12, 1955May 20, 1958Werner I StaafMount for display letters or the like and method of mounting letters
US2862413 *May 16, 1956Dec 2, 1958Illinois Tool WorksSelf threading sheet metal fastener for retaining soft material
US2870239 *Feb 14, 1955Jan 20, 1959Buchanan Electrical Prod CorpElectrical connector
US2991442 *Feb 6, 1958Jul 4, 1961Bryant Electric CoElectric wiring device
US3003084 *Jul 16, 1958Oct 3, 1961Rowan Controller CompanyElectrical distribution system
US3041573 *Jun 11, 1959Jun 26, 1962Ind Electronic Hardware CorpSocket with tube retainer
US3083796 *Jan 2, 1959Apr 2, 1963Carrier CorpStructural spacer member
US3084958 *Mar 30, 1960Apr 9, 1963Appleton Electric CoClamp assembly for electrical boxes and the like
US3278137 *Dec 11, 1963Oct 11, 1966Du PontThread-guide device
US3436717 *Feb 6, 1967Apr 1, 1969United Carr IncHolder for an electric lamp
US3560690 *Dec 18, 1968Feb 2, 1971United Carr IncElectrical switch with lowered panel mounting means
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US5131619 *Mar 9, 1988Jul 21, 1992Digital Equipment CorporationVibration isolating mount
US5449258 *Oct 26, 1993Sep 12, 1995Itt CorporationRetainer clip and shaft fastener apparatus and method
US5532669 *Nov 29, 1993Jul 2, 1996Hokuriku Electric Industry Co., Ltd.Terminal for high-voltage variable resistor
US5599131 *Dec 13, 1994Feb 4, 1997Flexible Steel Lacing CompanyPlate fastener with bolts preassembled
US5735171 *May 15, 1995Apr 7, 1998Itt CorporationWindshield wiper pivot joint
US6394503Mar 23, 2000May 28, 2002Lexmark International, Inc.System for securing tubing
US7435099Dec 21, 2006Oct 14, 2008Cinch Connectors, Inc.Electrical connector and packaging assembly
Cooperative ClassificationY10S411/918, H02G3/083