US932621A - Electric lamp. - Google Patents

Description

. n. D. LOGKWOOD.

ELECTRIC LAMP.

} APPLIGATION FILED-51111.7, 1909. 932,62L I Patented Aug. 31, 1909.

2 SHEETS-SHEET 1.

lm 0142mm:

5W M, a

V D. D. EOOKWOOD.

ELECTRIG LAMP. APPLICATION FILED JAN. 7, 1909.

Patented Aug.

2 SHEETS-SHEET 2.

' anueutoz Iavc'd ZlLac/rryoool witness FQEL.

mm a. .Locxwoon. or BEIDGWQRT, cornea-mew Specification .0: Letters Patent. I Batcnted'Aaig, .31., L909.

A imated, Jaa'uasgfl, 1969. Serial Nit- 121.

To .all whom it may concern:

Be it known that I, DAVID-D:- Looiiwoon,

a citizen of the United States, residing at Bridgeport, in the-county of- Hairficld' and State of Connecticut have invented certain new and useful" Improvements .in Electric Lamps; and I do hereby declare-the following to be a full, clear, andexactdescription of the invention, such as will enable others skilled in the art to which it appertains' to make and use the same.

My invention relates to electric lamps, but

more particularly to that class of such devices known as desk or table lamps, the object of my improvement being to provide a lamp which shall be universallyadjustable;

With this end in view my invention consists in the combination and arrangement. of parts hereinafter fully described and then particularly pointed out in the claims which conclude this description.

In the accompanying drawing Figure 1 is a side elevation illustrating my improved top in concentric therewith,

lamp, Fig. 2 a rear elevation partly in section, and Fig. 3 a sectional elevation of the socket and reflector portion of my improved lam J.

Similar numbers of reference denotd like parts in the. several figures of the drawing.

My in'iprovement relates solely to the various {H justments of the parts, hereinafter described, so that the very best results may be obtained from the light itself. 7

1 is a base or standard terminating at the a round stud 2 which latter, extends loosely through the head 3 of a horizontally disposed threaded pin 4.

5 is a bracket rigid with the casing. (3 of the lamp, which bracket, therefore, supports the entire lamp tion therewith. This bracket at its lower end terminates in a perforated cheek piece 7 which isloose around the pin 4, a similar cheek piece 8 being rigid with said pin and both of which cheek pieces have engaging teeth ,9, 10, respectively, on their contact edges. A spring 11 around the pin land confined within thecheek pieces serves to normally separate the latter so that the bracket 5- will be free to swing in a vertical lane, while a thumb nut 12 driven on the pin 4, serves to clamp the cheek pieces together to hold the bracket in any required adjustment.

The casing 4 friction and all the parts in cornice-- fects the result aimed at by my (3 contains the usual electric I Having thus described my mvention'what light socket 13 into which the light bulb 14 is inserted in the-usual manner;

15 isthe reflector, ofanyapproved shape instance, the casing has a small rib or nub 17 which extends therefrom and which isv contained within a hollow head 18 at the termination of the neck 16, a gate 19 being cut within this bead so as to admit the I'll) in assembling 'the reflector and casing. 20 is a shade which has a pintle 21 rigid therewith at its upper edge, and 22 is a head loosely pivoted around said pintle and having extending therefrom a tongue 23 which latter extends within a socket 24 in the upper forward edge of the reflector 15, the

between said tongue and socket being suflicient to hold these parts together.

25 is a thumb screw extending through the head 22 and adapted to be driven firmly against the pintle 21 whereby the shade may be securely held in any adjustment to which it has been swung. 26 is the usual electrical conductor which extends from the socket 13 through the casing.

In utilizing my improved lamp, the bracket 5 is swung horizontally so as to bring the light at the desired general location, the nut- 12 is loosened and said bracket elevated or lowered to bring the light at the proper distance from the surfaceto' be illuminated, the reflector is turned so as to direct the light or to soften or modify the same, while the shade is swung to any required adjustment in order to properly shield the eyes of the user As a student lamp my improvement. possesses marked advantages, since the various adjustments are quickly made, and the combinations that may be effected by utilizing all the adjustments are such that my improvement must necessarily meet the demands of every occasion.

I do not wish to be understood as claiming any novelty in any'individual adjus'tment,' since it is the combination of the several adjustments heretofore described that efinvention.

I claim as new and desire to secure by Letters Patent is 1. In an electric lamp, the combination of the standard, the bracket supported by said standard and having horizontal and vertical swingingadjustments, the lamp c asing carried by said bracket, the electric light standard and capable of a free horizontal socket contained within said casing, the rehector. mounted upon said casing and havan independent rotary adjustment thereswinging movement, the bracket loosely supported around said pin and capable of a vertical swinging movement, the clamping spring around said pin and actin normally to disengage said clampm mem rs, a nut driven on said pin where y said clamping members may be operated, the lamp casing carried by said bracket the electric light socket contained within saidcasing, therefiector swiveled upon said casing and capable of independent rotary movement concentric with the casing, and the shade hinged to the upper front edge of said refiector and having a vertical adjustment.

In testimony whereof I afiix my signature in presence of two witnesses.

DAVIDD'. LOCKWOOD.

Witnesses: t

.F, \V. SMrrH, J12, M. '1. Lemma

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