US1130496A - Lamp-shade. - Google Patents

Description

J. W. DUNHAM.

LAMP SHADE.

APPLICATION TILED JULY 17, 1914.

1,130,496. Patented Mar. 2, 1915,

same will more 'J'AMES W. DU NHAM, OF NEW YORK, N. Y.

LAMP-SHADE.

Specification of Letters latent.

Patented Mar. 2, 1915} Application filed J'uly 17, 1914. Serial No. 851,543.

may concern.-

I, JAMES W. DUNH-AM,

Be it known that a citizen of the United States, residing at I thereof to shades for incandescent -'which the shade is adapted to have a sub- .stantially New York, in the county of- New York and State of New York, have invented certain new and useful Improvements in Lamp- Shades, of which the following is a specification. p

This invention relates to lamp shades and withregard to certain more specific features lamps in universal movement with respect to the longitudinal axis of the lamp to permit-the shade to .be adjusted to any desired angular position relative thereto.

. One of the objects of the present invention is to provide a' simple and practical lamp shade which will be cheap tomanufacture "further object is i shade of the above character which will be reliable andefiicient in use and is so designed as to prevent breakage of the lamp bulb as the shade and lamp are moved relatively to eachother.

'Other objects will be in part obvious and p in part hereinafter pointed out.

"The present invention accordingly consists in'the features of construction, combination of-elements and arrangement of parts which will be exemplified in the device hereinafter described and the scope of the application of which will be indicated in the following claims.

-In the accompanying drawing, wherein is illustrated one of various possible embodiments of the prose t invention: Figure 1 is a side elevation, partly in section, of the complete device, and showing in dotted lines the relative position of the shade and bulb when moved from vertical position; Fig. 2 is a detailed perspective view of the gripping arms;

Similar reference characters denote corres onding parts in both figures.

eferring now to the drawing in detail there is denoted at -5 a lamp shade of metal or colored glass of any desired shape but preferably substantially as shown, as the conveniently fit" an electric light bulb 6, with which it is preferably adapted to beused. This shade is provided 7 through which passes a threaded stud 8, engaging a nut 9,

, shown comprises a to provide a lamp -16 and'lt' of each arm.

for securing the bulb gripping device to the shade. This gripping device as herein plurality of similar bent arms adapted to engage the bulb at a plurality of points in contradistinction to a gripping device, which might be used and engage the bulb by a line of surface contact such as might occur by a wire bent in the form of a ring of a relatively flat band. These arms it will be noted are preferably made from a'pair of wires having a with each other and spaced apart to engage the bulb along imaginary longitudinal lines substantially 90 apart, although it is of course to be understood that more arms may be used if desired, although the present construction is believed to be more advantageous, as it permits a. more rapid and convenient-removal or application of the shade irregularly twisted central connection to a bulb. It further permits the shade to be turned relatively to the bulb as'may be desired, as shown by the dotted lines, with greater ease.

The arms engaging the upper and lower parts of the bulb at single points thereby rotect the end point 12 of the bulb 6. Should it be attempted to make the gripping device so as to have a line or surface contact with the bulb there will be a decided tendency to snap off'this point 12 when the shade and bulb were moved relatively to each other, which will of course destroy the usefulness of the bulb:

It is thought the method ofuse and operation of a device of this character should be clear from the above description. It may be stated however, that the shade is particularly adapted for use in connection with a portable electric lamp of the general type shown in pending application of \V .Dunham, Serial/Number 833,340, filed April 21', 1914:, in which case the bulb (l is received in a socket 13, having a ball and socket joint 14, with a portable standard 15. 'The lamp shade is forced thereoi er to spring the yielding arms 10 and 11 outwardly, so that they subsequently grip the bulb at the points Then" when the lamp is swung over as shown by the dotted line position the shade may be turned relatively thereto without danger of breaking the tip 12; It is thus seen that the present invention PIOVldBSjL simple and ,practical deviceof the above character, adapted to- 1., In a, device of the'che'i'adter deeeriberi;

e lampshade capable of adjustment to any Poleeireol angle relative to theJOIigitudZnal axis of ll'l'blllb and adapted. to be attached. irectly to the bulb, ancl'a gzipping device for the shede comprising a pair of resilient wires eeeh"bent back upon itself, and. having a twisted connection with the other adapted to form e plurality of similar gripa lamp shade capable-of ecljostmexit to an desired.- angle reletlw e to the ioiigituclmei ping arms ezieliecm lieimg limit iivsw to engage the bulb at two pomts. I

2. in a device of the character olescrilieol axis of the bulb and; eiiapt'ed to be attached directly to the bulb, end. o gripping device for the shade comprising a pair of resilient wires each bentgbaci; upon itself, anti having a twisted. jsonnection with the other adapted to forin a plurality of gripping" aI'Ill1 S, 9&Cl1 arm being bent iti'egiilcrlyto engage the buib at two 'pointe, and means passing through the twisted connection of said arms for securing the grip iing clevice to'seid shale.

In testimoii in presence oi two Witnesses.

JAMES W. DUNHAEJL "Witnesses:

J. K. Mooee, R, A. BLAH.

whereof I efiix my signetiire

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