US954695A - Adjustable casing for electric-lamp sockets. - Google Patents

Description

UNITED STATES oriennnon n. erlernt, or

.ADJUSTAB'LECASENG F02?, .ELECTEZUL Application filed January 24, 1910. Serial No.

.To all' whom it may concern:

le it known that I, CLARENCE D. Piers, e citizen of 'the United States, and e resident of Bridgeport, in the county oit' Fairn iield and State of Connecticut, have invented icertain new and 'useful Improvements in Adjustable Casings for Electric Lamp Sockets, of which clear, and exact description, whereby one skilled in the ort may malte and use the saine.-

The invention relates to o shell or closure e lmnp socket and pertains more port-ieu- .larly to o twopart shell or csing to be used interlocking the shell part and the cop part oi o casing through a positive locking means 'which will hold 'the-ports together throughout their 'entire pempheral contacting suru faces.

.A iurther ohgect is to provide e locking 'which Will permit insertion or re 'inoval of the shell part with reference to` the oep, Without requiring a tilting' motion of the shell.

A still further object is to provide for positive locking of the shell and cap against relative rotary end longitudinel movements.

^ Refering to the 'drawingsz-Figure l is o `View in elevation of the shell including the cap. Fig.` 2 is a vertical sectional view. Fig.' 3 `is o cross-sectional View through. the locking lugs. Fig. 4 is a cross-sectionztl view in much .enlarged scale through the moin lug, which prevents ,relative rotation of the parte on o horizontal plane. Fig. is o cross-sectional View similar to Fig. l through one of the longitudinal locking lugs. F

is o vertical section through4 `the moin ig lug illustrated in Fig. el and token lit angles to the section of said figure. is a Vertical section through the lockigs illustrated in Fig. 5, token :it right `s to the section oi seid ligure. 8 illustrates the method of removing the shell trom the cop by a simple longitudinal .movement of the parts es permitted by the invention. Fig. 9 illustrates the tilting movement necessary for removal of `the shell from the Cep commonly used in devices of' the `zirt. J

In devices of the character herein deW Spe-silicati@ of n..

the following is o full,

vfor incasing the several connector parts of,

scribed, :it

iu onct joints, periorations and other in' for interlocking the eapfpart and the shell gert of o.. socket closure, but in said devices, so for es known, there have been objections.v

Generally speaking, ineens have been provided for prevent-ing rotary and longitudiv ent parte eiter they were nl "ferions ineens have been enisuoli en interlocking enin such devices, so .u disadvantages have been inherent to 't e structures. lior instance, either tile esp oi sliell-pnit has been greatly weakened hy cuttinoj away portions thereof to permit longitudinel engagement of the ,parts and prei/ent rotory movements thereof, Agein, bayonet oint engogenients have been employed wherein either the cap or shellpart nos been ont away greatly weakening it in 'orderto permit the initial sliding, engagement sind rotary movement to secure .interloolring,` ot the cop end shell. Even in such devices es elooverecited, wherein the esp' or shellport has been weakened hy cutting away the material,

shown. n

Frein 'l shove, it will he seen that even disregeicir the Weel iing of the parte of the structure hy cutting; away the instel, there is e disadvantage in having device in'whicli the ports niust loe separated by e hinge-action. Where sockets ure employed in s. receptacle or shell vwhich is necessarily inside to contorni closely to 'the outlines of the socket and cover, it is very dillicult to adjust 'the shell port to the cop-part of the socket, if ports ore to he seperated by e hinge-action. ln feet, it is practically inipossihie in innny ceses to separate the shell from the cop, :is the tilting movement ot the shell required for releasingthe ports is hampered by the t husk l or other embellishing; 'lixture surroicoding` the socket.

The socket onsings are ordinarily made of very thin spun metal endif this nietol is weakened by cutting away portions thereof es in therese oi bayonet joints or other engaged from the locking opening 32, whereupon the casing 35, may be tilted until the lug 33, is disengaged from the locking opening 3l. In such an instance, the ange of the cap must be weakened by cutting away material to receive the lug 36, which Aprevents rotary movement-f the parts and in such acase, the/parts can `be assembled in only one position. In the device hereinabove described, any one of the vlocking perforations will coperate withthe locking lugs to irmly engage the cap' and shell-parts and this, without any i cutting away of the metal of said'parts eX- cept, of course, where the perforations oc cur. Ihere" is solid metal to preventl removal of the shell from thejcap and there is -solid metal to revent relative rotation of the parts. -As illustrated herein, the perfober.

rations in the cap and the'corresponding locking lugs 'are indicated. as four in num- It is' obvious, however, that .the numbr and position of the perforations and lugs `might be varied to suit the eXigenci'es of any particular case. However, they should bev 'of such a number as to firmly lock the shellpart and the cap-part' at various'arcs offthe meeting peripheries so that the structure is substantially a irmand solid'structure. unl

til the main locking lug 13, isremoved from its locking perforation.

the device may be assembled or separated.

What I claim as my invention and desire f to secure b Letters Patent vis 1. A caslng for electric lamp socketscomprising a cap and shell member, one of said members provided with a Lplurality of perorations, the other of' sai parts provlded with a corresponding number of interlocking lug members, part of said members adapted for disengagement from the cap upon partial relative rotation of the cap and shell, andlocking means adapted for.

disengagement with the locking perforations only upon compression of said shell,"allof said locking lugs coperating to lock/'the' shell and cap against longitudinal move- 2. A casing for electric lamp' sockets com prising a shell and cap member, perforations formed in one of said members coperating locking lugs in the other ofsaid members, said lugs `beveled topermit telescopicv engagement of the cap and shell, and a p0si' tive locking lug to prevent relative rotation of the parts,` though Vpermitting direct longitudinal separation thereof when disengaged from its coperating perforation. 3..-A casing for electric lamp sockets comprising a cap and shell-part, one of said' parts provided with equidistant erforations of identical, form, the other o said parts provided with locking lugs corresponding in number to the prforations, beveled surfaces' on all of saidlugs to permit telescopic en` gagement of the cap and shell, one ofsaid lugs providedwit-h shoulders vto prevent relative rotation of the` parts-and lon itudinal separationthereo'the remaining ugs rovided with locking,r shoulders to prevent ongitudinal separatlon of-the arts,- and beveled.surfaces to permit relative rotation of the parts when the first. named-locking lu is disengaged from its locking opening, an means whereby one of the parts may be disengage the main locking lug.

CLARENCE PLAT'I.,

Witnesses WILLIAM L. vALEMNDER,A `monas N. SEARS.

compressedfwith reference to the' other vlto

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