US759924A - Bracket for desk-lights. - Google Patents

Bracket for desk-lights. Download PDF

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Publication number
US759924A
US759924A US16708303A US1903167083A US759924A US 759924 A US759924 A US 759924A US 16708303 A US16708303 A US 16708303A US 1903167083 A US1903167083 A US 1903167083A US 759924 A US759924 A US 759924A
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Prior art keywords
desk
bracket
lights
screw
clamp
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Expired - Lifetime
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US16708303A
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Theodore Smith
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Individual
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/02—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions
    • C23C22/03—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions containing phosphorus compounds

Definitions

  • My invention relates to certain improvements in brackets for desk-lights, the purpose being to provide adevice which may be readily secured upon the top of the ordinary roll-top desk and which will accommodate itself to various sizes of desks and at the same time permit of such adjustment as may be necessary to bring the light into the proper position.
  • Figure 1 is a plan of the bracket with the electric light attached.
  • Fig. 2 is a side elevation in horizontal section and showing the bracket attached to the top of a desk, and Fig. 3 is a vertical transverse section in line 3 3 of Fig. 2 looking in the direction of the arrow.
  • A is a tubular portion, preferably square in cross-section.
  • the screw connection between the two portions A B affords a longitudinal adjustment of the combined length of the two, and each is provided with a sliding jaw, by means of which the top of the desk may be securely engaged.
  • the part B has the jaw C, shaped at c to fit the curved edge of the top board of the desk and having the two vertical plates 0' perforated to fit the member B.
  • the member A has a clamp D, also shaped at (Z to fit the edge of the top of the desk, and also having two upwardly-extending plates d al extending, however, upward from the sides of the engaging portion (5 so as to embrace between them the square member A.
  • a clamping-screw D serves to draw the two plates d d together and secure the clamp firmly in position upon the member A.
  • a hollow knuckle E Upon the forward end. of the member A is pivoted a hollow knuckle E by means of the two screws (2 e, furnishing a vertical pivotal axis, and upon the free end of this link is pivoted a socket-holder F by means of screws ff, the latter being provided with a flat head to aiford a convenient means of turning the screw to clamp the socket-holder against vertical movement.
  • the socket-holder is likewise hollow, and a cord G is passed through all of these hollow members and attached to the socket H in the ordinary manner.
  • a shade I is shown as secured to the bracket H to throw the light down upon the desk.
  • bracket In applying this bracket to a desk the screw member B is turned in the member A until the light projects the desired distance in front of the top of the desk, after which the clamp D is forced tightly against the forward portion of the desk and secured in position upon the tube A by means of the screw 1). bracket may be still more tightly secured in position upon the desk by turning the screw member B slightly after this adjustment has been made. 7

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Description

PATENTED MAY 17, 1904.
'1' SMITH A BRACKET FOR DESK LIGHTS. APPLICATION FILED JULY 27 1903 1x0 MODEL VVEFMZ UNITED STATES Patented May 1'7, 1904.
THEODORE SMITH, OF CHICAGO, ILLINOIS.
BRACKET FOR DESK-LIGHTS.
SPECIFICATION forming part of Letters Patent No. 759,924, dated May 1'7, 1904.
Application filed July 27, 1903. Serial N- 16'7,083. (N0 model.)
To all whom it may concern:
Be it known that I, THEODORE SMITH, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Brackets for Desk-Lights, of which the following is a specification.
My invention relates to certain improvements in brackets for desk-lights, the purpose being to provide adevice which may be readily secured upon the top of the ordinary roll-top desk and which will accommodate itself to various sizes of desks and at the same time permit of such adjustment as may be necessary to bring the light into the proper position.
To such ends the invention consists in certain novel characteristics, which will be described herein and pointed out in the claims hereto annexed.
1n the drawings, Figure 1 is a plan of the bracket with the electric light attached. Fig. 2 is a side elevation in horizontal section and showing the bracket attached to the top of a desk, and Fig. 3 is a vertical transverse section in line 3 3 of Fig. 2 looking in the direction of the arrow.
Referring to the figures, A is a tubular portion, preferably square in cross-section.
B is a second tubular portion round in crosssection and. exteriorly screw-threaded at I) to screw into the interior of one end of the square portion, which is made of corresponding shape in the interior at this point to receive the screw-thread. The head of the portion B is formed in the shape of the ordinary thumb-nut at b to enable the screw to be easily rotated. The screw connection between the two portions A B affords a longitudinal adjustment of the combined length of the two, and each is provided with a sliding jaw, by means of which the top of the desk may be securely engaged. The part B has the jaw C, shaped at c to fit the curved edge of the top board of the desk and having the two vertical plates 0' perforated to fit the member B. l/Vhen in engagement with the desk, this clamp rests against the shoulder of the thumb-n ut Z). The member A has a clamp D, also shaped at (Z to fit the edge of the top of the desk, and also having two upwardly-extending plates d al extending, however, upward from the sides of the engaging portion (5 so as to embrace between them the square member A. A clamping-screw D serves to draw the two plates d d together and secure the clamp firmly in position upon the member A.
Upon the forward end. of the member A is pivoted a hollow knuckle E by means of the two screws (2 e, furnishing a vertical pivotal axis, and upon the free end of this link is pivoted a socket-holder F by means of screws ff, the latter being provided with a flat head to aiford a convenient means of turning the screw to clamp the socket-holder against vertical movement. The socket-holder is likewise hollow, and a cord G is passed through all of these hollow members and attached to the socket H in the ordinary manner.
A shade I is shown as secured to the bracket H to throw the light down upon the desk.
In applying this bracket to a desk the screw member B is turned in the member A until the light projects the desired distance in front of the top of the desk, after which the clamp D is forced tightly against the forward portion of the desk and secured in position upon the tube A by means of the screw 1). bracket may be still more tightly secured in position upon the desk by turning the screw member B slightly after this adjustment has been made. 7
I do not limit myself to the specific construction shown and described, as I recognize that the same may be varied considerably without departing from my invention.
I claim as new and desire to secure by Letagainst longitudinal movement thereon away from the desk, for permitting rotation of said second member.
In witness whereof I have signed the above application for Letters Patent, at Chicago, in
the County f Cook and State of Illinois, this 23d day of July, A. D. 1903.
THEODORE SMITH.
WVitnesses:
CHAS. O. SHERVEY, IVIATTIE B. BLIss.
US16708303A 1903-07-27 1903-07-27 Bracket for desk-lights. Expired - Lifetime US759924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16708303A US759924A (en) 1903-07-27 1903-07-27 Bracket for desk-lights.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16708303A US759924A (en) 1903-07-27 1903-07-27 Bracket for desk-lights.

Publications (1)

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US759924A true US759924A (en) 1904-05-17

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US16708303A Expired - Lifetime US759924A (en) 1903-07-27 1903-07-27 Bracket for desk-lights.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843348A (en) * 1956-05-24 1958-07-15 Harry C Samuels Detachable mounting for boat seats
US3517625A (en) * 1968-07-24 1970-06-30 Erwin G Swett Extensible mounting assembly with means to grip desk
US6712491B1 (en) * 2003-04-17 2004-03-30 Wen-Chang Wu Lamp assembling device with orientation adjustable lamp post

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843348A (en) * 1956-05-24 1958-07-15 Harry C Samuels Detachable mounting for boat seats
US3517625A (en) * 1968-07-24 1970-06-30 Erwin G Swett Extensible mounting assembly with means to grip desk
US6712491B1 (en) * 2003-04-17 2004-03-30 Wen-Chang Wu Lamp assembling device with orientation adjustable lamp post

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