US1679799A - Support construction for electrical appliances - Google Patents

Description

Aug. 7, 192a. 1,679,799

v n. N. THOMPSON SUPPORT CONSTRUCTION FOR ELECTRICAL APTLIANCES I Filed May 9, 1924 A TTORNEYS Patented Aug. 7, 1928.

UNITED STATES PATENT OFFICE.

non N. THOMPSON, or SYRACUSE, new YORK, ASSIGNOR TO PASS & SEYMOUR, me, or V SOLVAY, NEW YORK, CORPORATION OF NEW YORK.

surron'r CONSTRUCTION non ELECTRICAL APPLIANCES.

Application filed May 9,

This invention has for, its object a par ticularly simple, light and strong construction of supports for electrical appliances, as

lamp sockets, etc., by which the sockets or other appliances are connected to a support ing fixture, or to any other su port. The invention consists in the novel eatures and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanying drawings, in which like characters designate corresponding parts in all the views. I

Figure 1. s a sectional view, partly in elevation, of a lamp socket support embodying this invention.

Figure 2 is an inner face View of the support, the contiguous portion of the casing being also shown.

Figure 3 is a detail View of the ring to which the appliance is attached by screws.

Figure 4 is a detail sectional view partly broken away of the ring member and nipple.

This support comprises generally a nipple,

a ring member 1 to which the appliance 1s secured, the ring member having means for interlocking with the nipple to prevent relative turning of the nipple and the ring.

2 is the nipple, it being usually internally threaded for receiving a threaded supporting fixture or for receiving a bushing through which the feed wires pass, the nipple having a peripheral groove 3 at its inner end, and a notch 4 which intersects the groove.

' 5 is the ring member interlocked with the nipple, it having its inner edge or margin located in the groove 3, and having a tongue 6 which extends into the notch 4. The ring member 5 is usually flat. As here illustrated the nipple is formed with a reduced portion or lip 7 in its inner end, and the margin of this reduced portion or lip is 1924. Serial No. 712,032.

spread or spun over at 7 on the lower face of the ring, and thus forms the groove 3.

Usually in lamp socket constructions the ring member is covered by an annular convex sheet metal plate A,'formed with an an nular shoulder at 8 against which the outer margin of the ring 5 abuts, and the inner upper edge of the sheet thrusts against an annular peripheral shoulder 9on the nipple. The ring member 5 is also formed with one or more threaded openings 10, which receive the screws 11, by which the lamp socket or the base 12 thereof is secured to the cap.

Owing to the tongues 4 interlocking with the nipple, turning of the socket or other appliances and the ring member 5, relatively to tlie'nipple is prevented and hence twisting of the feed wires nipple, and breaking o the joints between the feed wires and the wire terminals of the lamp socket is prevented.

What I claim is:

Asupport constructionfor electrical appliances comprising a nipple formed with an annular, peripheral groove at its inner end, and with a notch intersecting the groove, and also with a shoulder above and spaced from the groove, a ring member having its inner margin extending into the groove of the nipple and a tongue extending into the notch, the ring member being formed with threaded openings for receiving the fastening screws of the appliance, a sheet metal shell in the form of a canopy having its upper end thrusting against said shoulder and being formed between its ends with a shoulder thrusting against the upper face of the ring member.

In testimony whereof, I have hereunto signed my name at Syracuse, in the county passing through the of Onondaga, and State of New York, this 1st day of May, 1924.

DON N. THOMPSON.

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