US153362A - Improvement in - Google Patents

Description

R. S. MERRILL W. CARLETSN.

Shade-Holders for Lamp Burners.

Paiemedmy 215874.

N ITED STATES PATENT OFFICE IMPROVEMENT lN,SHADE-HOLDERS FOR LAMP-BURNERS.

Specification forming part of Letters Patent No. 153,362, dated July 21, 1874 application tiled July 6, 1874.

To all whom it may concern:

Be it known that we, RUFUs S. MERRILL and WILLIAM GARLETON, of Boston, Massachusetts, have invented certain new and useful Improvements in Shade-Holders for Lamp- Burners, of which the following is a specifica tion:

This invention is designed to obviate the inconvenience experienced in the employment of ordinary shade-holders for lamp-burners.

Heretofore, so far as our knowledge extends, the means by which the shadeholder has been connected with the lamp has consisted of a ring or clasp encircling the neel; of the lamp or the screw-collar thereon. Under this arrangement the shade is liable to tip unless the ring fits the collar very snugly. The ring is liable to rise on the collar, and is also liable to turn thereon; so that, with the construction heretofore employed, there has been no certainty of the shade retaining its proper position on the lamp.

vWe obviate all these defects by employing a shade-holding sleeve, encircling and fitting the body of the lamp-collar, and provided at the top with an inwardly-projeeting annular llange, so locatedthat it will be clamped between the top of the lamp-collar and the base of the lamp-burner when the latter, after the shade-holder is placed, is screwed down into the collar. In this way, so long as the burner is screwed down, the shade-holder becomes an absolute xture, and has no movement independent ofthe lamp. Thus, superadded to the requisite adjustability and removability, it possesses all the advantages of a pe manent fixture.

In the accompanying drawing, Fi gure l represents a perspective view, and Fig. 2 a vertical central section, of our improved shadeholder, together with a lamp-collar and lampburner.

A isthe lampburner, B, the lampcollar,

into which the burner screws in the usual way. C is the shade-holding sleeve that carries the arms a or other devices for upholding the shade. The sleeve, which encompasses and lits the body of the collar, is of a length to form a guide for the shade-holding devices proper, and to assure and maintain them in requisite position on the collar when the burner for any purpose is loosened or removed, and may be of any usual construction, except in the respect that at its upper edge it is provided with a horizontal annular ilange, b, which projects inwardly far enough to allow it to be clamped between the base of the burner and the top of the collar without interfering' with the free passage of the burner into the collar.

The flange b is not necessarily continuons, but it may be broken upor cut away at'points, leaving only rin gers, which will serve the same purpose.

rlhe advantages of the described arrangement have been above stated, and do not require repetition.

What we claim as our invention, and desire to secure by Letters Patent, is-

A shade-holder for lamp-burners in which the support that encircles the lamp-collar consists of a sleeve, fitting the body of the collar to maintain the shade-holder in position when the burner is removed, and provided at its upper end with an internally-projecting portion adapted to be clamped between the top of the collar and the base of the burner, as shown and set fort-h.

In testimony whereof we have hereunto signed our names this lst day of J nly, A. D.1S7 Li.

' RUFUS S. MERRILL.

IVM. UARLETON. Witnesses:

A. W. ADAMs, B. F. HENRY.

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