US938313A - Strain-relief for electrical devices. - Google Patents

Description

G. W. GooDRIDGE. STB-AIN RELIEEl FR ELECTRICAL DEVICES.

APPLICATION FILED JUHEBO, 1908.

Patented Oct. 26, 1909,

ATTORNEYS GILBERT XV. GGODRDGE, GF BRIDGE'FGRT.

ELECTRIC CMPNY, F NECTICUT.

To all whom may concern:

Be it known thaty l, Gimuan'x' YV, Gom)- nmms, a citizen of 'the United Sima el' funericu, and residing :it Brit]eport7 i x. the county ef Fairfield und c ie of Ccnnecth cut, have invented u certain new und .naproved Strain-Relief for Electrical Dcvice, of which the lellewing is u speeilcutien.

My invention relates te roset't'es, sockets und other electrical devices in which the lmred ends of electrical conductors ure ficcured hy hiiuling screws lo terminal plut and the. object of my invention te previtle such devices 'willi L simple and, cll'icicnt nietins whereby the strati l en the connection ef the Wires to the terniinul ulutes muy be rclieved or 'when up, so that there Jill no liability ofthe Wires hecuin, n' `leue therefrom through the strain of u Nispen lmnp er other pull on he cords.

Inflhe accompanying drmvlng, l have shown my invention as applied te zi Simple forni of fuscless; rosette, huit will he uu- (lerbteotl that this'is for illustru'fsc purposes only, my iuventien being uppllcuhle to vuriormy 'forum el: reseas mul am@ to nher electrical tle.fice.-s requiring strain reliefs.

Figure 1 is zi. verti :al sectienl the rosette; :unl Fig. 1% is :i perspectii'e View el' the suine.

The insulating hotly A ef the rei-sette l :it its rezir u je 'lphe al 'lunge a. ernzii rear chumher for the wlre El, l@ und terminal plates D; l), will l L lut-c radially outward through noi-chefs ci, ai, the llange and have hln ling Se fewf; al? L .th line wires.- These. *c min l ,il-tete t are Secured to the insulutit e i; di, d, und are Ilrevitletl with hit il c te secure the lm: )il eiutfi el? 'nur insu l) auch wires lll, "tu, te the, terminal within the chamber at the, buck o Seite. The wires lth lil, pus out rosette through a central opening;

p the BRIE e er project l i. etal Strips, hecuretl iu pla-:e under the lates D, uml currief around and over x2 inner curls, el. the lu'ttcr ancl'ttntlcr the curls ei? the binding; screws e, e, as shown, se that ce1/ered portions of the contluctors HQE, a-:ljucent te their haretl ends may be embraced by the clumps and rinly hel ilu-eviale clumps lthfcenslstngg of thin thereby when the screws e, e :1re turned. lovin t1 These. clumps; hus hold im wi wni f lirni lrit'ftiennl grip 'ou their i1 iuizltlug ..=,'erin'u :unl take, ell' all direct .lr-ain on. 'the Wire ends under the screw helada.

l claim :is my invention:

l. jui electrical device huvlng an insulffxing; belly :intl terminal pluies with a Strain relief cmuprlsing binding screws and clamping (levicer to e tice und grip the insuluetl Qtntions el' the Wire` adjacent to the lmretl ends el the wireb` held by 'the binding :sert-m5.

lu electrical device having im insula ing` hotly iin/tl 'icri'niuul plates with a strain reliell emp-fixing binding screws and clamping st ge; te embrace and grip the insulated noriens of the fires adjacent te 'the bine. ing screw', the la er securing the clamping Strips.

flu elet-smil ile-vice having :in insulailotuly :intl terminal plates with lnintling ws, und cltnnpim :trips :lzecnretl under :'vlalesi ai; ene cnil und. ever ne pl and te und wire passing under the lwmls il e 5' 'cling screwS which secure Seial 'wlz'e Y En ie. nearly if'heree have Signe-(l my en'ioiu in "che presence I nume to tihis s: tir-:a Fullseri'tlnc u w. Gee,nmneig-L;I

infirm,

UNMNGHAM.

extending up

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