US1905143A - Electric light strip - Google Patents

Description

4Apl25,1933. J D CARR' L905J43 ELECTRIC LIGHT STRIP Filed June 13. 1928 INVENTOR. 'Vd/'rea D Civil.

Patented Apr. 25, 1933 UNITED STATES PATENT OFFICEI .Tum D. CARB, OF DETBDIT, MICHIGAN, ASSIGNOR T PITTSBURGH RE'FLECTOR COMPANY, 0F PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY ELECTRIC LIGHT STRIP Application led June 18,

My invention relates to a new and useful improvement in an electric light strip adapted as a support for electric light bulbs and reectors particularly used in illuminating show windows and for other display purposes.

It is an object of the present inventlon to provide a strip of this class whereby access to the wiring extending longitudinally thereof may be easily and quickly had.

It is another object of the invention to provide an electric light strip of this class which may be standardized so that it becomes no longer necessary to construct the l1ght strip l5 to order for the special jobs.

Another object of the invention is the provision of a light strip of this class having a plurality of outlet openings indicated thereon which may be easily and quickly placed in condition for use.

Another object of the invention is the provision of an electric light strip of this class which may be economically constructed and which will be durable and most efficient in use.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanying drawing which forms a part ofthis specification and in which Fig. 1 is a perspective view of the invention With a part broken away.

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary longitudinal sectional view ofthe invention.

Fig. 4 is a perspective view o a corner piece used in the invention.

Fig. 5 is a fragmentary sectional view of the invention illustrating the adjoining of abutting strips.

The invention comprises a tubular member 1928. Serial No. 284,961.

through which wires 17 and 18 are projected, these wires being adapted for electrical connection to the socket 16 in which the light bulbs and upon which the reflectors are mounted. This tubular member comprises a pair of overlapping channel-shaped members, one of which comprises the side Walls 1() and 11 and the base 9, and the other of which comprises the side walls 12 and 13 which overlap the side walls l() and 12. the base 14 connecting the side walls 12 and 13. Knock-out plugs 15 are indicated on the base 14 so that when these. plugs are knocked out the socket 16 may be mounted in the opening thus formed. An end cap 19 serves as a closure for one end of the tubular member and a cap 2() having the opening 21 formed therein for the passage of the wires therethrough serves as a closure for the opposite end.

By forming this tubular member of the separable sections access to the Wires is easily and quickly had and the cost of original iustallation is reduced to a minimum as the wires may be very quickly extended longitudinally of the tubular member and the necessary connections made to t-he sockets 16. By providing the knock-out plugs 15 in one of the sections of thel tubular member it becomes possible to standardize the material which is used for constructing these. light strips as thc knock-out plugs are so located that they will determine the distance from center tocenter of the various light sockets so that the same stock of material may bc. used for different jobs and in ditl'crent locations.

When it is desired to span a long distance, and it becomes necessary to use several lengths of the strip, the ends may bc abutted together and secured in position by the sleeve 22 which is held thereon by suitable set screws.

In Fig. 1"1 have shown an L-shapcd arrangement whereby the strip may be used for making a turn` the telescoping arrangement of the sections heilig retained in making the turn, as well as in the straight len hs.

ile I have illustrated and described the preferred form of my invention, I do n ot wish to limit myself to the precise detalls of structure shown, but desire to avail myself of such variations and modifications as come within the scope of the appended claims:

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. A combined electrical conduit and outlet unit comprising a pair of relatively long, continuously extending members adapted to be inter-engaged to f'orm a wire conduit, one of the members constituting a base, the other member having knock-out plugs formed therein, and electrical outlet members in openings formed in the last-mentioned member, said member being effective for supporting and spacing the outlet members prior to positioning on the first-mentioned member.

2. A combined electrical conduit and outlet unit comprising a pair of relatively long, continuously extendlng sheet metal members adapted to be interengaged to' form a wire conduit, one of the 'members constituting a base, the other member having knock-out plugs formed therein, and electrical outlet members in openings formed in the last mentioned member, said member being effective for supporting and spacing the outlet members prior-Ito positioning on the first-mentioned member. n "f 3. A combined electrical conduit and outlet unit comprising a pair of relatively long, continuously extending sheet metal members adapted to be'interengaged to form a wire conduit, one ofl the members constituting a base, the other member having knock-out plugs formed therein, and electrical outlet members in openings formed in the last mentioned member by removal of knock-out plu said member having bent-up flanges where y the same is relatively stii and is eii'ective for supporting and, spacing the outlet members prior to positioning on the first-mentioned member.

4. A combined electrical conduit and outlet unit comprising a pair of relatively long, continuously extending sheet metal members ada ted to be interengaged to form a wire con uit, one of the members constituting a base, the other member being bent to channel-like form and having a face with knockout plugs formed therein and bent-up flanges extending from the face and adapted to engage the base member, and electrical outlet members in openings formed in the channellike member by the removal of the knock-out plugs, the outlet members having portions projecting into the channel-like member, said pri-jecting portions being of less depth than the Han es, and the channel-like member being s ciently sti and strong to support

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