US1793261A - Clamp - Google Patents

Description

Feb. 17, 1931. H, M STIE'GLITZ 1,193,261

CLAMP Filed March 21, 1925 y 64W/ f 04W www" Patented Fein-lvl?, l n

UNITED Starts 7 HENRY M. sTIEeLITz, or sr. LoUi's,MISSOURI;.AssIGNozamo .rnANxfA-DAM ELECTRIC co.,` or snrours, Missonnrh CORPORATION Application med March alpines;v serial Nq. 17,318. "i i My invention relates to improvements kin jclainps especially designed for the securement of fronts or covers, to cabinets, or boxes con tainingA electrical devicesv Ysuch as` panelboards. n Y' Y Y My object is to provide a deviceof simple,

strong, durable and inexpensivel construction` yComprising'elements providing both angular and distance adjustment, relatively, whereby frontsv torv panel board boxes' maybe selectively positioned and secured tofxedjboxes or cabinets. Y rMy improvements consist in the novel construction, arrangement and combination fof parts as hereinafterfully, clearly and concisely described,ldenitely pointed outY in my claims .and illustrated bythe accompanying drawing in which Figs. l, 2 and 3 are, respectively, an'elevation, a plan view and a transverse section .of the clamping element; Figs. 4 and 5 are, respectively, a plan-view and a transverse section of the swivelinut; Fig. 6 isa view of the clamp as employedin connection with'a front resting directly upon the box; and Fig; 7 is a' View, similar to Fig. 6, showing the clampV YasV employed in connectionwith a `front spaced away from the box.

Referringto the drawing, A designates a s box or cabinet, for electrical panelfboards, or

- other electrical devices,f and B designates a as shown in Fig. 6 or the flush type as shown in-Fig. 7.

front or cover therefor. Y n l- The boxes may be either of the surface type,

In the `surface type the cover, or front B, is directly attachable to the box A, and inthe fiush type the front is spaced from vthe box, as by plaster, or other wall surfacing, surrounding a wall cavity. I A

The clamp of my invention functions'with equal facility and eiiiciency in the securing of Y fronts, or covers, to boxes'of either surface or Hush installation, and, to this end, com- Y Yelement D.

prises essentially Van element C having arms 10 and 11, an element D having swivel connection with the element C, andan .element having variable distance' relation withjthe By preference the element C is formed vout of a single piece of sheet metal, out and internallythreaded.j Y n' `IThe element E is vby' preference an ordinaryshaped to form a substantiallyillfshapedbody havingV a' p air ofzcheeks, or sides, 12, a bridge, or "connecting piece, 13, andA thefarms 10 and 11,- forined asintegral continuationsfo-ff'the rvino 16-'having a -iange,lrib','orfburr, 17,' and' screw, having -a head 1 8, anda threaded' shank 19,"the head forminglan abutment for seating about a hole; 'forn'ied in'the front Band thef Yed f threaded shank forming a connection provid# ingdistance"l adjustmentbetween the head 18 'andthe element D.

`i@b'viouslywith'the tipsof arms 10 Vand 11 of the element C engaged beneath the-front ,and a part of the box,and the screw, or ele-'r ment E coifiectedv with theV element C, as by ai threaded connection with the swivel nut, the

yso f frontinay be-ixed to the vboxfin selective positionsfand 'by reason of the threadedV sha-nk` of the screw and the rotary mounting of A the swivel,- the elementf'C maybe tilted bodily and hence serve for varying types of boxes andfronts. n 'Q By preference the threads in theswivel nut (element D) and the screw (element E) are I of'a relatively-tight fit, whereby the clamp (element'U) will bodily rotate upon a turn-1, ing or" the screw SOthatfthe armsoftheelement C be properly positionedin the cabinet A, as against aside wall thereof/asshown.A When in this position, they element Cjis pre- 9 vented from furtherrotation and the element E, upon centinued rotation, draws the element D'toeect a tting and clamping of the y'front B to the box.

VHaving thus described my invention, what ina' f I claim as new therein and desire to secureby Letters Patent is v:- Y Y 1. In a` device of the class described, asubstantially U shaped clamping element, the bridge portion thereof having an elongated openingvtherethrough, a unitary element substantially semi-'cylindrical in form and having swivel connection with the clamping ele ment and an element having variable distance relationship -wilth the swivelled element, and

4extending through the -lelongated opening.

2. In a device of the class described, an ele ment having a pair of substantially parallel arms, extending lengthwise thereof, a bridge between the arms, having an' elongated opening therethrough, a' unitary element substantially se'nii-gcylindricalin form and having l y rotatable .connection with said arms, and disposed vat 212 fixed .distance .from said bridge,

andan elementoarried bythe rotatable element Vandarranged for -adgustable connection therewith through the elongated opening.

3.4 In a deviCeo-,the class described, a

one-piece clamping element comprising rela- .tively parallel arms, extending lengthwise of the element, a substantiallyv semi-cylindrical swivel-nutfof .one-piece construction, rotatably carried Vby andhaving corresponding `bearing surfaces in they arms ofthey clamping element anda sore-w carried by theswivel- 1l,- In atrim-seouring clamp, in oombination, a clamping screw, a one-piece body member, Vthe screw and bodyinelnber beingthreadedly' associated to vpermit their relative adjustment, andan arml formed ofvspaced'side portions having registeringjapertures theref in,'thear1n being mounted for-rocking move-F ment uponthe body member, and so constructed as to provide anelongated opening between said spacedside portions, such opening permitting the'armjto rock through a substantial Vangle relative to the screw, the arm being adapted, upon relative movement of the screw and body membenior clamping actuay v tion in opposedrelationtothe screw, the Vapertures insaid arm; forming bearings vfor said body member; Y

HENRY M. sTIEGL-ITZ.

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