US911411A - Carbon-holder for electric lamps. - Google Patents

Description

0: J. LANG. CARBON HOLDER FOB. ELECTRIC LAMPS.

APPLIOATION FILED APR.30,1908.

Patented Feb. 2, 1909.

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CARL JAMES LANG, Ui OLEANyNEW YORK.

' GARBON HOLDEBDEOR' ELEQTRIC LAMPS.

NofQllAll.

specification of Letters Patent.

"Patented-Feb. 2, 1909.

Application filed April 30, 1908, 'Serial No. 430.184=.

To alt-whom nit-may concern:

Be it knownthat I, CARL J. LANG, citizen of the'United State's, residing. at Olean, in the county of Oattaraugus and State of New .York, have invented certain new and useful improvements in' Carbon-Holdersfor Electric Lamps, of which the following'is aspecification, reference being hadto the accompanying drawings. I V

lily-invention relatesto improvements in carbon holders for electric arc-lights or lamps, and it consistsof the novel features of construction and the combination .and :ar rangement of parts hereinafter fully describedand claimed.

The object of the invention is to provide a simple-and practical device of thischaracter by means of which the car-hon pencil maybe securely clamped in an adjusted positionand which be effectively insulated from'the other 'portions of 'the lam'p.

The'above and other objects of the inventionpas wv-ill' hereinafter appear, are attained in its preferredembodiment illustrated in theaccompanying drawings, in which Figure 1 is aplan view of my improved carbon holder; 2 is a side elevation of the-samefFig. -'3 is a longitudinalsection; and Fig. 4 is'a detail' transverse section taken on the plane-indicated bythe-line 44 in My improved carbon holder comprises-an aidjustable arm l-oomposed of two sections 2,

which areinsulated from each other but rigidly connected, one section carrying ea clamping device for the-carbon pencil or stick and ;a binding one terminal of the e ectric circuit and the other section being adjustably connected to thesupporting or'attaching member 4 which is arranged upon the feed mechanism of the lamp. The insulating joint between the sections 2, 3 of thearm 1 is formed by squaring the innerends of said sections and recessing their opposing faces, as at 5, so that they fit each other and forming said overlapping or interlocking ends-with alined openings 6 to receive a clamping bolt or the like 7. A bushing or sleeve f mica or other insulating material is arranged upon the bolt in the opening 6 and the head of said bolt is preferably countersunk or flush with the outer face of the section 2, as shown, the other threaded end of said bolt having a clamping like 9 is a 0 arranged between the recessed nut arran ed upon it. A strip of mica or the 0st or connection for and overlapping inner ends 5 01'' the sections 1, .2 to cflectively" insulate one from the other. The section 3 of the arm has its outer end pivoted in a forked portion 10 of theattaching member 4 and it is adapted to be clamped in an adjusted angular position in said portion l0 by its pivoting'screw 11.

The latter has at one end. a shouldered enlargement .and ahead orfinger piece 12 and at its other end screw threads which engage 'a threaded opening in one branch of the forked portion 10. The forked portion 10 of the attaching member is offset from its body portion, which latter isformed with avertical openin 4* to receive one of the feed bars of I anarcight feed mechanism of any form and construction. Said body ortion of the member 4 is also formed with a. horizontal socket 4." which opens into the vertical opening 4 ,;said socket being of such size as to receive the feed bar andthereby permit the holderito be disposedieither vertically or horizontally.

'W'hcn'the feed bar is arranged in. the verticalwopenin-g :4 the attaching member or body 4' will be disposed horizontally and the adjustably pinoted v.ar nl zl will also be disposed horizontally or approximately so; but when said feed bar. is arranged in' the socket oi'opening' 4 the attaching member orbody is turned on the pivot 1 1a to av'ertical'plane or i at right angles to the arm 1, which latter is always disposed in a. horizontal or lapproximately horizontal plane. ,;.'1he2prov1s1on of the socket 4* also i. ermitsrthewattaching member or body-etc e secured onzany horizontalstud .or projection that may been the i feed bar. i

A -set-. screw.13 is arranged in a threaded opening in the body portion of theattaching member at a point 0 posite the intersection of the openings or soc ets'4 4 so that it will impinge against the feed bar when inserted in either of said openings or sockets. The 7 section 2 of the vertical swinging arm 1 has its outer endenlarged and formed with a transverse groove or recess .14 which forms onejaw of a carbon clamp, theother similar 'a'w 15 of which is formed by a 1 ed at one end to the outer end 0 the section'2 and-adapted to have its other or 'free .end securedto-the' inner portion of the sec-' tion 2 by means-of a screw 17 and a clamping nut '18; The screw 17 is pivoted at 19 in a recess or slot formedin the section 2 and it is adapted to swing into and'out of a notch or late 16 I lli) . ets or openings to receive the feed rod of an.

Cir

two sections of the arm.

renders the invention exceedingly eflective T re nut 18 igs and with a stationary i or flange which bears against the "ace the jaw member The hinge connection between the two jaw members is preferably formed by biiurcating the outer.

end of the section 2 and reducing the inner end of the member 16, as shown at 21, andsecuring said reduced end 21 in the bifurcated portion of the section 2 by means of a pivot pin I i i 23 denotes a post projecting from the inber 2 and formed Witha socket to receive one of the terminals of the electriocirhe wire may be secured in the socket y set screw 24. icy providing the adjustable pivotal eonlection comprising the partslO, 11 between the attaching member or body 4 and the carbon supportin arm 3. and by inakirigsaid arm of rigidly and permanently connected insulated sections and attaching the circuit Wire to theouter section which carries the carbon, it will be seen that the inner section of said arm may be swung or tilted to any angle and securely clamped. in such position without danger of wearing or weakening the.

d goint or connection between the This construction insuia for use on are lamps used in moving picture machines because it'is frequentlynecessary to adjust the carbon both vertically and angularly in order to secure an effective light.

Having thus described my invention What i claim is:

1. A device of the character described comprising an attaching member having a body portion formed with intersecting sockarc-larnp, a set screw arranged in a threaded pening in the body portion and adapted to impinge against the feed rod inserted in either of said openings or sockets, an adj ust able arm carried by the body portion and consisting of rigidly connected sections in sulated from each other and means upon said arm for supporting a carbon.

2. (l6VIC6 of the character described so formed in the i'ree end of the jaw; arc lamp, a set screw arranged in the thread- 18 preferably prol ed opening in the body portion and adapted to impinge against the feed rod inserted in H r of said openings or sockets, said body oi men being also formed with forked ortion haying alining apertures in its branc es, the anerture in one branch being screw threa ed, a carbon carrying arm consisting of insulated sections and having an apertured end arranged between the branches of the forked part of the body portion and having its aperture in alinement with the apertures in said branches, a thumb screw arranged in said alining apertures and havin a shoulder at one end "to engage one of sai branches and a threaded portion at its other end to-engage' the threads in the aperture of the other branch Wherebysaid arm is pivot- .socket or opening to receive the feed rod of an electric lamp, a set screw for rigidly securin'g said member to the feed rod, said member being also formed with a forked portion hav ing spaced branches provided with alining a ,ertures, one of the latter being screw t readed, a carbon carrying arm consisting of insulated sections and having .one end aperturod to enter between the spaced branches of the forked portion of the member and t have its aperture aline with those in said branches, and a clamping screw arranged in said alining apertures and haviru a shoulder at one end to engage one of said branches and a threaded portion at its other end to engage the threads in the aperture of the other branch whereby said arm is pivotaily mounted upon the member and maybe clamped in any angular position with respect thereto. I

In testimony whereof I hereunto affix my signature in tire. presence of tWo Witnesses. CARL JAMES LANG.

Witnesses:

C. K. CALKINs; GLEN Vt Arms.

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