US817346A - Electric hand-lamp. - Google Patents

Description

PATENTED APR. 10, 1906.

E P. STAKELBBGK. ELECTRIC HAND'LA P. APPLICATION FILED AUG B, 1905.

WITNESSES:

JTTORNE Y.

, omit. two parts OFFICE.

ELECTRIC HAND-LAMP.

Specification of Letters Patent.

Patented April 10, 1906.

Application filed August 9,1905. Serial No. 273,358.

electric drop or hand lamps; and the object of my invention is to furnish an improved means for securing the electric wires to the lamp'socket, said wire-securing means serving at the same time as a handle for the socket and lamp.

In Letters Patent of the United States ranted to me on Au st 1, 1905, No. 795,867 have shown and c aimed a means consist- I ing of a split tapered plug of insulating mate rial for securing the Wires of an electric drop or hand lamp to the handle thereof. In my present invention I make use of the split plug or securing the line-wires; but I thread the outside of this plu so that it may be screwed into the base of t e lamp-socket, and thus take the place of the usual handle, which I In order 'to insure the mating of the of the plug and to removably secure one part to the other, I furnish one of its inner sides with a pin or pins adapted to ente a corresponding depression on the other s1 e.

In the accompanying drawings, in which similar letters of reference indicate similar parts, Fi e 1 is a side elevation of a lamp and a soc ret, the latter partly in section, fitted with my improvement; Fig. 2, a perspective view of the wire-securing means; Fig. 3,

a side elevation of the wlre-securing means; Fig. 4, a plan view of Fig. 3, and Fig. 5 a side elevation of the inner part of one of the sides of the Wire-securing means.

a is a lamp-socket, and b a lamp of wellknown construction. The base of the socket is threaded at c, as is the case when a handle is employed. Instead of the usual handle I make use of the two-part plug (1 e, which is constructed of insulating material, hard rubber, fiber, porcelain, or other suitable material. The upper end of this plug is exteriorly threaded, as shown at g, and is adapted to be screwed into the part c of the socket, while the opposite faces of the inner sides of the two parts of the plug are furnished with two longitudinal grooves h i to receive each one linewire.

j is a head upon the lower end of the plug, which forms a convenient means for hold ing the arrangement in the hand.

In order to keep the two parts of the plug properly mated when screwing it into the socket and for insuring the proper continuity of the threads upon threaded portion during this operation, I furnish the parts of the plug one with pins k and the other with holes I or with some other equivalent device, which when engaged insure a proper relation of the parts with one another.

If desired, the threaded part of the plug may be tapered, as shown in Fig. 3, in order that its sides may be forced together and tightly clamped against the line-wires which it is intended to hold; but if the grooves hi be sufficiently shallow and the threaded part of the plug itself be substantially of the same or of slightly less diameter than the threaded part of the socket into which it is screwed the inc-wires will be so tightly held that they cannot be displaced by any ordinary use or abuse.

My present device not only serves to hold the line-wires so that there will be no danger of them being drawn away from the bindingosts of the socket, but takes the place of the ong handle usually employed in lamps of this nature.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In an electric hand-lamp, in combina tion, a lamp, a socket carrying said lamp, said socket being interiorly threaded at its base, and a two-part plug furnished upon its interior with rooves to receive each one of the line-wires eading to the lamp-terminals, and being exterior-1y threaded so as to be screwed into the base of said socket.

2. In an electric hand-lamp, in combination, a lamp, a socket carrying said lamp, said socket being interiorly threaded at its base and a twopart plug furnished upon its interior with two grooves to receive each one of the line-wires leading to the lampterminals, said plug being exteriorly threaded at one end so as to be screwed into the base of said socket and furnished at the other end with a collar to serve as a handle.

3. In an electric hand-lamp, in combinalion, nlump, a socket carryin said lamp,said curing one of the parts of said plug to the sovkot boingintoriorly tluem fed at its base, a other so as to insure the proper relation of two-part plug furnished upon its interior with said parts.

Lwo grooves to receive each one of the line- HERMAN F. STAKELBECK. wires leading to the lamp-terminals, said piu Witnesses:

being externally threaded so as to be screwe GEORGE W SELTZER,

into said socket, and means for removably se- CHARLES A. RUTTER.

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