US1277646A - Locatable socket-cap. - Google Patents

Description

R. A. SCHOENBERG.

LOCATABLE SOCKET CAP.

APPLICATION men OCT. 31. 1914.

Patented Sept. 3, 1918.

E T FFICE.

RALPH AI B RAHAM SCHOENBERG, (NOW BY JUDICIAL CHANGE OF NAME .RAIQPH A. BELMONT) OF YORK, N. Y., ASSIGNOR TO THE CONNECTICUT ELECTRIC. MFG. CO., 0F BRIDG-EPORT, CONNECTICUT, A CORPORATION OF CONNECTICUT;

LOCATAIBLE SOCKET-CAP.

Specification of Letters Patent. Patented Sept, 1918 Application filed October 31, 1914. Serial No. 869,573.

To all whom it may concern:

Be it known that I, RALPH A. SCHOEN- BERG, of New York,-in the county of New York and State of New York, have invented a new and useful Locatable Socket-Cap, of which the following is a specification.

Incandescent lamp sockets are commonly made with an outer shell or casing of two parts comprising a body holding the usual switch whose operating handle projects radially beyond the shell, and a cap separately coupled to the body portion of the shell and made with an interiorly threaded nipple adapted to screw onto the threaded end of the socket supporting fixture. Such sockets are often used in connection with husks or socket covers such as shown in U. S. Patent 997,598, dated July 11, 1911 and which are made with an aperture through which the switch key of the socket projects so as to be accessible. When so used it is necessary to accurately position the socket and husk relatively so that the socket key will properly register with the aperture 1n the husk or cover. With the socket constructions heretofore proposed, however, this has been diflicult .and, moreover, it was frequently and usually impossible to assemble the parts with the switch key occupying a definite desired position relatively to the supporting fixture. One of theobjects of this invention is to provide a lamp socket or the like particularly adapted for use with husks or covers and so constructed that the switch key can be accurately and easily positioned relatively to the key aperture in the husk as well as relatively to the socket-supporting bracket and to make the socket selflooking so as to dispense with the usual set screw provided to lock the socket against turning on its support. V

A feature of my invention consists in providing a compressible attaching nipple for the cap so that it may be screwed up hard in'order to vary the rotary position of the cap and in the preferred form the compres sibility is provided without the necessity of using any additional element.

. Another feature consists in the use of elficient latching means such, for example, as a bayonet joint with means to position the cap as heretoforeany attempt to angularly position the key has meant the use of length.

7 porting fixture.

wise latching means which have'been decldedly ineflicient for various reasons such as loosening up after wear and such as imperfect fit between the body of the casing and the cap.

The invention also resides in other peculiar features of construction andicom'bination of parts set forth in the following description and particularly pointed out and hereinafter referred to showing the manner 1 in which it is applied to a cap.

Fig. 7 illustrates the manner in which th wrench is used to apply the cap to its sup- The body A of the shell or casing of my improved socket may be of usual. construction and is provided with the usual two pairs of studs a to interlock with the usual pair of bayonet slots 1) provided in the rim of the cap. In-Fig. 1 the cap, B is made with an interiorly threaded nipple b which has its free end counter sunk as at b and also formed with an exterior annular groove 6 said countersink and groove serving to so reduce the thickness as to 'make the-outer end of the nipple frail and compressible under endwise pressure.

In Fig, 2 I have shown a cap' B whose nipple b is provided at its outer end with an annular series of compressible prongs I) which may be made by reducing the thickness of the wall of they nipple at and near said end and notchingsaid reduced portion.

In Fig. 3 I have shown a cap B whose nipple Z2 is made longitudinally compressible by slotting said nipple crosswise from opposite sides thereof as at b and b.

In Fig. 4 I have shown a-cap B whose nipple b isformed with a counter sunk recess 12 within which'is forced a compressible c of the socket su porting fixture C the interiorly threade nipple of the cap is screwed onto nipple 0 until it bears firmly against the husk D with the bayonet slots b 50 positioned that when the body A is coupled thereto as indicated by dotted lines in Fig. 7 the key a will register with the key opening d of the husk and can be passed through said opening as the body A is brought into position and the studsa are engaged with the slots b. The nipple of the cap is screwed tightly onto nipple a so that its compressible end, however made, is compressed and acts as a frictional lock to hold the cap against rotative displacement on the nipple 0. An ordinary socket of this kind has the nipple of its cap provided with a set screw which is employed to lock the cap nipple to the fixture nipple to hold the socket against rotative displacement, but when such a socket is used with a husk'this set screw is so far within the latter that it is inaccessible and is useless with the result that it is a diflicult, if not impossible, matter to both position the socket with relation to the husk opening d and at the same time have it turned up sufficiently tight on nipple c. It will thus be seen that the compressible end. portion of the cap nipple has the important function of locking and holding the socket against rotative displacement, that is, it serves the part of a check nut.

The compressible end portion of the nipple also permits of accurately and quickly positioning the cap with relation to opening d since the tightening rotation of the shell cap may be continued to position the shell cap relatively to opening (1 after the end of the cap nipple has been brought to bear against the husk D during the assembling operation, the end of the cap nipple being further compressed as this tightening move ment of the cap is continued. When the cap nipple is screwed up tight into final position its more or less compressed end acts to produce a longitudinal thrust or pressure on the nipple which causes the threads on the latter to be pressed or held forcibly against the threads on the nipple 0 thus producing a frictional adherence which serves to lock the cap 4 nipple against rotative displacement, this being in addition to the frictional adherence between the end of the cap nipple and husk D and between the latter and the shoulder c of the supporting fixture.

In order to facilitate the accurate assembling of the husk and socket on the supporting fixture C I provide a wrench E comprising a stem 6 made with an index or pointer e and provided at one end with a handle e and at its opposite end with a pairof diametrically opposite radially disposed arms e When the socket cap is to be applied to fixture nipple a the arms 6 gamete are inserted in the two slots 6 of the cap, in the manner illustrated in Fig. 5, and then the ca is applied to fixture nipple 0 and rotated y means of handle 6 until the end of the ca nipple is more or less compressed against the husk D .and the pointer or index i plpints toward the key opening (1 in the The body A is then inserted in the husk with key (1 extending through opening d, the studs (1 being interlocked with the slots 1) in the usual fashion and the latter occupying their proper positions relatively to opening (1 so that when body A is coupled to the socket cap the key will be positioned to extend through opening d as will be clear.

In the forms of cap shown in Figs. 1, 2

and 3, particularly the latteri the compressible end portions of the nipp es are resilient as well as compressible so that when either one ofthese caps is in position on the fixture nipple c and under compression its tendency to expand maintains'a particularly efi'ectiye locking action and will do this even when the cap is removed from nipple c and replaced.

A greatadvantage of my invention is that the socket is held against angular displacement whereas heretofore such displacement has been possible and has resulted in loosening up the cap and in twisting and breaking of the wires and in some cases in twisting the cap off the fixture and in short circults.

-What I claim is:

1. A socket for incandescent lamps having a shell provided with means for interlocking with a detachable cap, said cap having an attaching nipple, said nipple having an endwise compressible portion .to angularly position sald shell and cap.

2. A socket for incandescent lam s hav ing a cap with an endwise compressi le selflocking attaching nipple, said locking being due to pressure caused in compression of said nipple.

3. A device of the character described comprising a cap with an attaching nipple, the latter having outside of the cap a portion which is endwise compressible when in engagement with another member with relation to which the cap is angularly positioned.

4. A socket for incandescent lam s having a cap with an attaching nipple t readed to screw onto a support, sald support having a shoulder, said nipple having a compressible extremity to engage said shoulder.

5. A socket for incandescent lamps having a cap, said cap having an attaching nipple, said nipple having an endwise yielding support-engaging portion that is compres- 'sible by engagement with said support when ple, the

- 26" nipple,

ing'a cap with a threaded attaching nipple; said nipple having a non-threaded yielding support-engaging portion that is. compressible by engagement with a threaded shoul- 5 dered support, when the cap is applied to the latter locatably.

7. A device of the .character described comprising a support; a husk engaging said support; and a cap with an attaching niplatter having outside of the cap a portion which is endwise compressible when in engagement with said husk.

8. A socket for incandescent lamps having a cap and an attaching nipple, said nipple having a-portion thereof reduced 1n thickness so as to be compressible endwise to angularly locate and look said cap.

9. A socket for incandescent lamps having a cap and an attaching nipple having at 20. its extremity an angular groove for render- 85 compressible attaching nipple to locate and lock said parts in any relative angular position with relation to its support.

having anon-threaded longitudinally com- 40 pressible extremity to locate and lock' said- ,cap in a predetermined position with relation to a fixture substantially as described.

13. A socket for incandescent lamps having in combination a key, a shell, a cap pro- 46 vided with a nipple; a shouldered support operating engaging means for engagm for said socket; and longitudinally compressible means outside of the cap to locate said socket with relation to the support.

. 14. In combination in an incandescent lamp socket havingtwo separable parts, co-

parts; an attachin nipple on one 0 said parts, and longitudinally compressible means to'locate and lock said parts with relation to a support.

15. A device of the character described said comprising a shouldered support; a key; a

shell; and a cap having an attaching nipple; and compressible means between the support and nipple to locate the socket with relation to the support.

.16. A device of the character described comprising a support; a cap having an attaching nipple; and longitudinally compressible means between the support and nipple to locate and lock the cap with relation to the support when said means is under compression.

17. A device of the character described comprising a supporting member which is threaded; and a cap having a nipple with a portion threaded to engage the threading of said member and with another portion which is unthreaded, the latter portion being longitudinally compressible by engagement with said member.

18. A device of the character described having a supporting member with a shoulderanda projecting threaded portion; a husk to engage said shoulder; and a cap having a nipple with a portion threaded to engagethe threading of said shoulder and 12. A socket cap for incandescent lamps with another portion which is unthreaded the latter being compressible longitudinally when pressed against said husk and holding the latter in engagement with said shoulder.

I RALPH ABRAHAM SGHOENBERG. Witnesses:

ABRAHAM LEONARD BUSH, LEON STRAUSS.

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