US1517800A

US1517800A - Socket and ring

Info

Publication number: US1517800A
Application number: US573929A
Authority: US
Inventors: William M Parker
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-07-10
Filing date: 1922-07-10
Publication date: 1924-12-02
Anticipated expiration: 1941-12-02

Description

' w. M. PARKER SOCKET AND RING Filed July 10, 1922 Patented Dec. 2, 1924.

UNITED STATES WILLIAM M. PARKER, OF PAR-KERSBURG, WEST VIRGINIA.

SOCKET AND RING.

Application filed Jufly 10,

T 0 all whom 2'25 may concern.

Be it known that I, VVILLIAM M. PARKER, a citizen of the United States, and resident of Parkersburg, in the county of Wood and State of West Virginia, have invented a new and useful Socket and Ring, of which the following is a specification.

My invention relates to electrical devices which have a shade holder in suitable adjacency to the holder for a lamp, for example.

A feature of my invention is a strip or band of insulating material separate from the body of the device and provided with threading to engage a shade holder, this threading being preferably 011 a metal ring secured to said insulating material, the latter insulating the shade holder and metal ring from the holder for the lamp.

Another feature of my invention consists in providing a plurality of lamp sockets held assembled by a molded casing in combination with insulating material separate from said casing for insulating said sockets from the shade holder rings.

Another feature is the use of material separate from the casing, which material is sufficiently ductile to have the shade holding ring held to it, preferably by riveting.

In the drawing Figure 1 is a sectional elevation of a plural socket embodying my invention;

Figure 2 is an elevation of the insulating ring and the shade holder ring assembled;

Figure 3 is an elevation of the insulating ring;

Figure 4 is a bottom plan of the elements shown in Figure 2; and

Figure 5 is an elevation of the ring for holding the shade holder.

I illustrate my invention as embodied in a plural socket having socket shells A and A to receive lamps, for example, and having plug A to engage a fixture. A wire B connects the center contact a with the center contacts (not shown) of the shells A and A suitable insulation, such as the porcelain parts a, a and a being provided. Another wire D is electrically connected with shells A and A and plug A A casing E of insulating material, such as a shellac composition or coal tar product, is molded inside of plug A and outside the other parts to hold them firmly in relative position, the structure so far described being like that disclosed in my application Serial No. 481767.

1922. Serial No. 573,929.

A tube G is provided made preferably of fibre but any other insulating material may be used which is sufiiciently strong and also sufficiently ductile to have the ring hereinafter described held to it by riveting or by friction.

The shade holder ring H is externally threaded to receive the shade holder K and has sholder it against which said holder may hear. The tube G and ring H are preferably riveted together although it is practical to hold them together by friction and I have shown rivets g 9 although portions of the ring itself might be riveted to the tube.

I provide an assembled ring and tube for each metal socket shell A and A, each tube not only insulating its ring from the ad jacent socket shell but also holding its ring in place.

The tubes with the rings attached are preferably located with reference to the socket shells and are then placed in the mold together with the other parts and the casing E is molded to the wire and to the socket shells and to the upper outside portions of the tubes G.

An important advantage of my invention is that I provide a strong support for the ring and one which will be uniform for all sockets and one which will make sure that the shade-holding ring will retain its shape so that its threading will engage the threading of the shade holder.

Another important advantage is that I increase the speed of production principally because the mold can be more quickly removed because there is less of the molded casing in contact with the parts of the mold than heretofore.

Another important advantage is that the fibre or other tube prevents the pressing of the ring in against the screw shell which might cause electrical connection.

What I claim is:

1. A plural socket comprising a plurality of socket shells to receive lamps; an insula-t' ing casing for holding said shells in proper relative position; a shade holder ring for each shell; and an insulating tube for each socket, separate from the casing, and insulating each ring from its shell and supporting each ring in proper relation to its shell.

2. A plural socket comprising a plurality of socket shells to receive lamps; an insulating casing for holding said shells in proper relative position; a shade holder ring for each shell; a fibre tube riveted to each ring andlbeing separate from the casing, and insulating each ring from its shell and supporting each ring in proper relation to its shell.

3. A plural socket comprising a plurality of socket shells; a metal ring adjacent to each socket shell and being externally threaded to engage a shade holder; insulating material between each socket and its ring; and a casing, separate from said insulating material, and molded to said socket shells, to said insulating material and to said rings, and insulating said socket shells from each other.

WILLIAM M. PARKER.