US1538547A - Lamp-shade support - Google Patents

Description

May 19, 1925.

W. C. GREIST ET AL LAMP SHADE SUPPORT Filed March 13 1923 Patented May 19, 1925.

* UNITED STATES AT N OFFICE.

WALTER 0. carrier, ANDREW J. CARMICHAEL, ANnJoHN n. rnrnnsoN, or, New HAVEN, CONNECTICUT, AssIeNos s TO THE eas er MANUFACTURING cor/rraNv, on NEW HAVEN, ooNNEc rIcur, a oonroaarron' or CONNECTICUT.

LAMP-SHADE SUPPORT:

Application filed March 18,1923. Serial No. 624,851.

To all whom it may concern:

Be it known that we, WALTER C. Gnnrsr, ANoenw J. Canarrcrnucs, and Jon)? 1 12-. runs .z-r, citizens of the United States of America, residing at New Haven, in the county of New Haven and State of'Con-= necticut, have invented certain new and. useful Improvements in Lamp-Shade Supports, ofwliich the following is a full, clear, and exact description. i i

This invention relates to shade-supporting means for electric and other lamps, whereby the shade maybe supported reli-' ably at various angles with reference to the lamp bulb.

An important. feature of the invention comprises an improved form of clamping device to engage the bulb, and which is constructedtoreliably support the shade from and by the use of an economical construction which may be manufactured in large quantities, and ata relatively small cost.

In connection with the clamping device, the invention contemplates the use of a universal joint or connection between said device and the lamp shade, the construction of which is such that the shade maybe tilted at various angles tothe longitudinal axis of i the bulb and will be reliably maintained in any of the-positions of adjustment to which it may be set;

Other important features of the invention, such as valuabledetails of construction and combinations of parts, will be better understood from the following description in connection with the accompanying draw ings, and the novel features of the invention will be pointed out in the appended claims:

Fig. 1 represents a lamp shade in section, and the improved shade supporting device in side elevation;

Fig. 2 is a view in elevationof the shade support taken at right angles to the position in which said support is illustrated in Fig. 1, and p Fig. 3 is an inverted plan View of Fig. 2.

Referring to Fig. 1, the shade 3 is provided at its central top portion with a hole through which passes a threaded stem 5 which extends from a split member 6 of the universal joint comprising the members 6, 7, and 8. A shoulder on-the member 6 bears against a metal washer9 within the shade the bulb in a simple and efiicientmanner,

and having a hole in alignment with the hole in the shade through which passes the stem 5,'and a knob 10, provided with an internal thread to engage the stem 5,, serves to clamp the member 6 and washer firmly. to the. lamp shade.

as an ornamental featurethereof.

. The member. 7 of the universal joint is preferably formedfrom a single piece of sheet metal, having two parallel limbs 11, 11, which embrace the split member 6 of the joint and are connected thereto by a suitable rivet 12 which is preferablywheaded" at Said knob is located at, the top,.central portion of theshade and serves both extremities on the outside of the limbs 11, 11. Two limbs 13, 18, which extend away from the limbs 11, 11, and which are bent along lines extending-at right angles to the lines on which the limbs 11, 11, are bent are connected by a pivot 14- With a split member 15. The member 15 of the universal joint has'rigid connection, as by a1 rivet,

constitute the shade support proper-u The member 16 of. theshade support has a flat portion 20 from whichthe arms a, a, are

bent downwardly and outwardly and terminute at their lower ends in circular clamps 21, 21. flat portion overlying the-flat portion of the member 16, andhas also two 1 downwiththe twocrossed members '16., 17, which The member 17 is provided with a wardly and outwardly inclined arms 6, b, I

likethe arms a, a, but arranged at right angles to the latter. a The arms I), b, also terminate in circularportions 22, 22, forming clamps which are located between the circular clamps 21, 21, of the member 16. four circular clampmg members 21, 21, and

22,22, are arranged, as will appear from.

Fig. 1, approximately fapart and serve to engage the lamp bulb B. upon four sides,

The

position upon the bulb and is more reliable in this respect than a coil of wire or any other form of metal clamp which has'less positive holding power than the circular formation. At the same time, the circular clamping members may be stamped out of sheet metal with ease, and by the use of simple dies, the material employed in such form of clamp rendering it possible to manufacture the device in quantities at a minimum expense. If it be desired to tilt the shade 3, relathe clamping members and the bulb B which should be that shown in Fig. 1 of the drawlngs.

lVhile advantageousresults have been 'found to follow from the employment of two pairs of clamping members,"as l6, 17, each providedwith two circular clamps, as shown herein, certain benefits of the invention have been found to follow from the use of three circular clamps,instead of four. It is also within the contemp'lationot the invention to form the crossed members 16,

17, of a single piece ofmetal instead of two pieces, and in some instances this modification has been found to give very good results. The invention is, accordingly,- not necessarily limited to the exact details of construction and arrangement of parts shown herein, but may be varied in the respects noted, and otherwise, so long as such variations fall within the scope of the following claims.

What we claim is new and desire to secure by Letters Patent is:

1. A lamp shade support made of fiat sheet material, and comprising a plurality of clamping arms arranged angularly to each other, said arms terminating in circular clamping members to engage a lamp, with means for securing said support to a shade.

2. A lamp shade support made of sheet material, and comprising two members arranged at right angles and provided with with said support and at its other terminal with a lamp shade, said joint being capable of movement to'permit said shade to be adjusted at varying angles to the axis otthe lamp without causing said support to move from normal lamp engaging-position;

4. A lampshade support comprising, in combination, a sheet metal member having a perforated fiat portion with a plurality of downwardly extending diverging arms terminating in completely circular lamp-engaging portions, and a flexible joint having rigid connection with said flat portion at one end; the other end of said joint being secured to a lamp shade.

In'testimony whereof we have hereunto set our hands this 15th day of February A. D. 1923.

WALTER C. GREIST. ANDRElV J. CARMICHAEL.

JOHN R. PETERSON.

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