US1568279A - Adjustable strap for electric-lighting fixtures - Google Patents

Description

Jane 5 192 5. 31 5368279 M. HERSKGVITZ ADJUSTABLE STRAP FOR ELECTRIC LIGHTING FIXTURES Filed June 4. 1924 citizen of the United States,-

electric lighting Patented Jan, 5, 1926.

UNITED STATES mix nnnsxovnrz, or CHICAGO, 'IIQLmoIsf-WILLIAM nnnsxovrrz AND crrAnLns wmnrnnn nxricu'rons or sari) nansxovr'rz, DECEASED.

npqus'rsnm 's'rmr 'roit ELECTRIC-LIGHTING rrx runns.

Application med-June}, 924. Serial No. 717,696.

To all whom it may concem:

Be it known that I, MAX. HERsKovrrz, a and a resident of Chicago, Cook County, and State of 11- linois, have invented certain new and useful Improvements in Adjustable Straps for Electric-Lighting Fixtures, of which the following is declared to be a full, clear, and exact description.

This invention relates to adjustable supporting straps for electric lighting fixtures and its principal object is to provide an adjustable metal strap, whereby it Wlll fit mostly all electric lighting fixtures. Another object is to provide a strap for electric lighting fixtures having adjustable features whereby the fixture, supported thereby, may be placed oil centre with respect to the studor pipe 11 on which the strap 18 secured. Another 0 cot is to reduce the number of parts of adjustable supporting straps for fixtures to a minimum.

With these and other objects and advantages in view, this invention consists in the several novel features hereinafter fully described and claimed.

The invention is clearly illustrated in the "accompanying drawing in which Fig. 1 is a side elevation, partly broken away, of an adjustable strap for electr c lighting fixtures showing the same in use supporting a ceiling light; F g. 2 s a perspective View of the strap; Fig. 3 is a plan illustrating a numberol': the end member blanks showing how they are punched; Fig. 4'. is a detail section taken on the line H of Fig.2; Fig. 5 is a plan of a slightly modified form of the centre member of the strap and Fig. 6 is a side elevation, partly broken away, showing the application of the strap to a wall bracket.

Referring to said drawing and first to Figs. 1 to 4 inclusive, which illustrate the preferred embodiment reference character 7 designates an outlet box of ordinary form,8the threaded fixture supporting stud thereof 9 the strap which forms the subject matter of this specification, 10 the lobe or shade holding collar and 11 the gldlie or shade which is supported by the collar 10. socket may be usual method or it may be otherwise fastened to the ceiling which supports the fix ture.

An ordinary electric light of the invention the fastened to the stud by the,

In its referred form, the strap comprises two simi ar fixture supporting end members 12, 12 adjustably connected by a fitting or centre piece 13. Each. end member 12 com prises a forked piece formed of sheet metal avlng a neck portion 1 1 and two spaced parallel branches 15 extendingtherefrom. The neck portion 14 is punched and struck up to form a hole 16, the edge of which is threaded for the receptionof a bolt or screw l7 which is used to secure the collar 10 to the strap. It may also be punched with a bolt hole 14 for use in attaching certain fixtures to the strap. The branches 15 of each end member 12 are struck upwith suit-able dies to form ribs or beads 18 for the purpose of giving strength and rigidity to the branches. The branches of one end of member 12 are placed upon those of the other and member 12 as seen in Fig. 2 -and they are adjustably connected together by the fitting or centre piece 13. Preferably said centre piece ir channel shaped and the flanges 19 thereof are slotted as at 20 to receive the overlapping branches 15 of thccnd members 12.

The main part 21 of the centre piece is formed with a hole 22 whereby it may he slipped upon the threaded pipe or other supporting-stud 8. The strap is secured to said pipe or stud by a nut 23 or by an electric light socket threaded on the stud and screwed up against the under side of the centre piece 13.

The free ends of the branches 15 are formed with small projections 24 which may be bent up after the three parts of the strap have been assembled, thereby forming lugs which prevent the several pieces from being detached from each other during the handling or shipping of the strap-and thus eliminating the use of many pieces.

The end pieces 12 are punched out of. strip or sheet of metal and the branches-0t one end member are punched out of the metal occu ying the? spaces between the branches 0 two adjacent branches, as is clearly seen in Fig. 3, whereby very-little material is wasted in the formation of the end pieces, thereby making it. possible to produce the strap economlcitlly.

By making the two end members adjustable. the stra may be accommodated to'collars or canopies of various sizes within given lim ts, and because of the adjustabilit of the centre piece on the two endmem .--110 along the whereby the-fixture may be supported ofi centre with re spcct 'to the p'ipeorfstud which carries it.

In use the slipped over the pipe or stud 8.,and the-nut23 or electrlc light socket is screwed up against thelower side thereof. Theend members '12 may 1thenbe adjusted, in the centre piece to. bring themat theplacesdesired, the col-' lar or canopy 10 is then placedover the strap and is securedthereto bythe screws 17 jj In the form illustrated in Fig. 5 the centre formed with slotted flanges, and two; sinnp-iece 13 is; made considerably longer than that seen in 13" and bolt holes 13,,whereby many piece and have bentend portions that. lie' parallel with'the mainpart or bodyof the centre piece to: form guide ways for the rece tion otthe branches of the end members.

n Fig. 61 haveshown the strap-9, se-

I cured upon. a wall. and have illustrated an ordinary Wall bracket 11 supported by the 'stra' in an .ofi' centre condition with respect to t esupporting stud. In case it is desired to move the bracket from the centre the end members 12 are adjusted to the .place desired.

In case it is necessary to fit the strap to a bracket or other fixture of v'ery small diameter the arms 15 may be cut by a pair of snips.

More or of construction is possible without departing from the spirit of this invention; I desire, therefore, not to limit myself to the exe act form of the-construction shown and described, but intend, in'the following claims,

centrepiece of the strap *is Fig.2 and-it is formed with slots 1 ,;f ferent forms of firrtures, may be secured; thereto. Instead of the transversely eXtend tures,- comprisinga flanged centre piece, aturesupportmg end members, each to point'out of the invention disclosed herein;

-I -clai1n as new and desire to secure byLctvt s..

1. An adjustable strap for lighting fixtures, comprising a centrally apertured centre piece formed with flanges, and twof'similar fixed supporting members, two spaced branches, the branches of one end member overlapping the branches of the'iothermemb'er and both being held by the flanges of said centrepiece.

' 2. An adjustable strap-for lighting fixeach having ture's, comprising-an apertured centrepiece lar fixture supporting end members, each formed with a neck portion and two paralel branches, the branches of one member verlapping those 'of the other and all ranches extending through the slots of the lofted flanges of the centre piece and being adjustably secured therein; 3'.An adjustable strap for lighting fixcentrally apertured, and two similar. fixformed 1 ith a'neck and two spaced parallel branches,

tl e branches having struck up beads or ribs rmed thereon and their ends being formed with laterally extending lugs, the branches of one end member overlapping those of another and being slidably held by the fla ges of the flanged centre piece.

An adjustable strap for lighting fixt res, comprising three members assembled v -tjjgether so as to be adjustable upon each dther, less variation of the exact details;

=lugs arranged to strike against the first mentioned member to prevent disconnection between the members.

MAX'HERsKoviTz.

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