US1640189A - Lamp socket - Google Patents

Description

Aug. 23,1927. 1,640,189

D. E. HAMEL.

LAMP SOCKET Filed Feb. 20. 1925 B01712011 zmifl Patented ug. 23, 1927.

UNITED STATES y 1,640,189I PATENT OFFICE.

DOBMAN 11. HAMIEL, 0F COLUMBUS, OHIO.

LAMP SOCKET.

' Application led February 20, 1925. Serial No. 10,702.

This invention relates to an improved socket adapted for the quick and convenient attachment of separable current conveying members "and, specifically, the invent-ion provides a socket into which a separable plug or lamp base can be quickly and easily inserted and supported therein for the efiicient transmission of electric energy and with an effective mechanical union between the separable parts.

It is anobject of the present invention to provide a lamp socket in which the threaded base of an ordinary incandescent lamp may be inserted and secured without involving the use of screw threads, as is now customary. It is a tedious and time consuming' task to insert the ordinary tlireadediform of incandescent lamps into the receiving sockets in which they are to be placed or mounted. In the rst place there must be proper registration between the lamp base and the receiving sockets, and then the lamp must necessarily be rotated to the end of the socket to effect the necessary electricalk contact between parts. It is an object of the present invention to provide a socket in which the lamp base may be inserted by a sliding movement which can be quickly and easily accomplished in but a fraction of the time required to thread the lamp in an ordinary socket,and to construct the socket so that the same will securely support the lamp therein with the same security as provided by the-threaded form of socket and with equivalent electrical etiicienc y With these and other objects in view, as will appear as the description proceeds, the invention consists in the novel features of construction, combinations of elements and arrangements of rarts hereinafter to be fully described and) pointed out in the appended claims.

In the accompanying drawings: "i,

Figure 1 is a verticall sectional View, partly in side elevation of a lamp socket -constructed in accordance with the p-resent invention,

Figure 2 is a horizontal transverse sectional view on the line 2 2 of Figure 1, and Figure 3 is a perspective view of the spring tension ring. l

In the yaccompanying drawing the socket l comprising the present invention is shown as susimnded from current conducting wires p 2. It will be appreciated, however, that contact 4 and spaced or insulated return con- T tacts 5, the contacts 4 and 5 being in communication and secured to the wires 2 in any suitable manner.

Surrounding the body 3 is a metallic sleeve G in which is positioned a tube 7 ofa an insulating material, and arranged to be carried by and connected with the contacts 5 are separable threaded supporting wings 8, formed from meta-l so as to be in electrical communication with the contacts 5.

Itis customary to provide a socket of this character with an internally threaded metallic bushing or sleeve in which is threaded the base 9 of an electric lamp 10 or other electrical apparatus. However, in the present invention such a threaded bushing is eliminated and in place thereof the resiliently separable wings'` 8 are provided. These wings are permitted to flex about the plane defined by their points of connection with the contacts 5 and sufficient space is rovided between said Wings and the tube gto permit of this function. By this construction the lamp base 9 may be inserted directly into the socket by a straight, in-

wardly directed linear movement, the wings expanding or separating as a threaded portion of the base 9 engages with the corrugations or threads ofthe win s 8, so that when the central Contact 1l of te base 9 engages with the Contact 4, the wings will exercise a frictional grip upon the base 9 to support the latten-within the socket;

An important feature of the present invention resides in supplementing the normal or inherent resiliency of the wings 8 with a surroundingspring ring orcollar l2. This ring or collar is ositioned within an annular recess 13 provided in the sleeve 6 and tube 7 near the o en lower end of the socket. The ring or colar comprises a band l cated in Figure 3, and the position of said ring is such that its normal tendency is to hold the Wings in their nearest positions of relative approach, so that the saine Will exercise a reinforced maximum securing grip upon the base 9, preventing the latter from becoming accidentally disengaged with the Wings 8 as will be apt to happen were not'tlie 'ring or collar 12 provided. It will be seen, however, that by reason of the corrugations in said ring the said Wing sections 8 may separate sufficiently upon the removal' or insertion of the base or plug 9 to permit of longitudinal travel thereof in the socket l, but when such travel has ceased the Wing sect-ions will be moved relatively toward each other to exercise a secure grip on t-he base 9.

In view of the foregoing it will be seen that the present invention provides a simple, convenient and effective fixture by means of which separablel current conducting menibers can be readily connected together or taken apart and wherein provision is present for effecting the mechanical support ot' said members as a unit. The socket does not in any way change the standard Jform of lamp base, or other threaded fixture now in general use and ot' accepted design. The construction is particularly usetul Where it is necessary at frequent intervalsto remove the lamps from vor insert the same into sockets or fixtures, so that this operation can be carried out quickly, eliiciently and with but slight loss ot' time.

What is claimed is:

l. An incandescent lamp holder comprising a hase, an outer metallic sleeve carried by the base and forming a socket for the removable reception of a lamp base, said sleeve being provided with an angular spring seat, a' split lamp base receiver carried by the base and arranged Within said socket, and an annular spring confined between the sleeve and the receiver and positioned in said seat for coaction with said receiver to resiliently resist expansion on the part of the receiver.

2. An incandescent lamp holder comprising a base, an outer metallic sleeve carried by the base and :forming a socket for the removable reception of a lamp base, said sleeve being provided with an angular spring seat, a split lamp base receiver eari'ied by the base and arranged within said socket, and an annular corrugated spring confined between the sleeve and the receiver.

and positioned in said seat for coaction with said receiver to resiliently resist expansion on the part of the receiver.

In testimony whereof I aiix m'y signature.

noRMAn E. HAMIEL.

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