US389005A - Eugene h - Google Patents

Description

(No Model.)

E. H. PBCK.

EXTENSION LAME FIXTURE.

Patented Sept. 4, 1888.

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EUGENE H. PECK, OF MERDEN, CONNECTICUT, ASSIGNOR TO THE MERIDEN BRONZE COMPANY, OF SAME PLACE.

EXTENSlON-LAMP FIXTURE.

SPECIFICATION forming part of Letters Patent No. 389,005, dated September 4, 1888.

I A pplicaiion filed May '21. 1888. Serial No 74,467. (No niodelJ To all wwm, it may concern.' spends substantially to the internal diameter Be it known that I, EUGENE H. Piron, of of the outer tube, but so as to move freely Meriden, in the conntyofNeW Haven andState therein as the inner tube, C, is raised or lowol' Connecticut, have invented a new lrnproveered. On one side of the shoe a recess, E, is 55 ment in Extension-Lamp Fixtures; and I do formed, opening against the inner surface of hereby declare the following. when taken in the outer tube. The bottom of the recess is connection with accompanying drawings and inclined from the lower end of the shoe upthe letters of reference marked thereon, to be ward and toward the open side ofthe shoe, as a l'ull, clear, and exact description of the saine, represented in Fig. 1. 1o and which said drawings constitute part of Before introducing the shoe into the outer this specilication, and represent, intube a spherical roller or ball, F, is placed in Figure l, the invention as applied to an adthe recess, the diameter of which is somewhat justable standard resting upon the iloor; Fig. greater than the distance from the inner sur- 2, a transverse section through the shoe above face of the outer tube to the nearest point of 65 the roller; Fig. 3, an open side view of the the inclined surface of the side of the recess in shoe; Fig. at, the invention as applied to atelthe shoe, and as represented in Fig. l. Becscopic adjustable tube or standard in the relow the roller a suitable spring, a, preferably verse position from that seen in Fig. l-thnt a wire spiral spring, is set, the spring resting is, as suspended from the ceiling; Fig. 5, a upon the lower end of the recess, and the roller 7o 5o inodication. stands upon the upper end ot' the spring, and This invention relates to an iniproveinentin so that the tendency of the spring is to force extension devices for lamps, such as are arthe roller upward into the narrower portion ranged to be suspended from the ceiling-as of the space between the inner surface of the chandcliers-or to rest upon the floor, and outer tube and the bottom ofthe recess in the 7 5 such as consist of au outer tube with an inner shoe. The result of this is that normally the tube or rod working telescopically therein, the inclined surface of the recess works between outer tube being stationary either upon a base the ball and the side of the outer tube oppo to rest upon the iloor or supported i'roin the site the opening of the recess-as a wedgeceiling, theinner tubeorrod carrying the lamp the tendency of which wedging is to force the Sc 3e or lamps and made adjustable as to elevation roller against the outer tube upon the open by the movement ofthe lainp-supporting rod side of the recess, and as seen in Fig. l, but or tube within the outer tube. when the inner tube is raised the wedge-like ln order to support the inner tube at any part of the shoe is withdrawn, or relieves the position to which it may be adj usted, some deroller to such an extent as to perinit thc inner vice or mechanism is necessary between the tube to rise with little obstruction; but upon outer and inner tubes, which will interlock the any attempt to force the inner tube downward two, or so engage them that the adjustable the wedging of the shoe upon the roller betube will stand at any point oi' elevation to cornes greater and so as to produce a crainp which it may be moved. It is to this engagbetween the inner and the outer tube, so great 9o 1o ing mechanism that the invention particularly as to prevent the descent ol` the inner tube.

relates. To relieve the adjustable inner tube from this I first illustrate the invention as applied to cramping operation, so that it may be easily a standard for lamps and other purposes. moved downward, a rod, G, is placed within A represents an outer tube, supported upon the inner tube, which extends down through 45 a suitable base, B, in a vertical position. the upper end ofthe shoe, and so as to bear Within this outer tube the inner tube, C, is upon the ball or roller F. Froxn this rod any arranged, so as to slide therein telescopically, suit-able handle, as H, is provided at a convenand as coinnion in this class of standards. To lent point, so that the rod may be forced downthc lower end of the tube C the shoe D is seward, as indicatedin broken lines, Fig. l, and, Ico 5o curely fixed, or may be made a part of the inbearing upon the ball or roller, will force the ner tube. The diameter of the shoe correball or roller downwardin advance of the shoe,

inner tube from the friction which would nat-v urally occur by the upward pressure upon the ball from its spring. The ball or sphericalshaped roller stands free within the recessthat is, without xed axis-and is therefore free to revolve in any direction. The result of this is that in adjustment the ball will constantly change its position and present an ever-changing bearing-surface between the shoe and inner tube. Consequently the wear which would necessarily follow a roller hung upon an axis is avoided.

The saine shoe applies to an extension device for chandeliers, as seen in Fig. 4, it only being necessary to invert the shoe from the position in Fig. 1 to that seen in Fig. 4. In the latter case the outer tube, A, is fixed-to the ceiling, while the inner tube, C, carrying the lamps, or whatever it may bc, below, hangs from the outer tube.

The adjustable portion of the standard is best made in the form of a tube, as I have described, so that the rod may be placed within the tube, a common construction in this class of devices; but instead of making the adjustable part tubular it may be made a solid rod,- as also common in this class of devices, in which case the adjusting-rod will be introduced between the inner rod and the outer tube, as seen in Fig. 5.

I am aware that standards consisting of a stationary tube and a tube telescopically ad- `instable therein, combined with a device to 4o automatically engage the inner tube with the the hand can be conveniently applied to break the connection, so automatically made7 between the outer and the inner tube, have long been known in the art in lamp-fixtures and for other purposes, both in standards adapted to be supported upon the iioor and others adapted to be supported from the ceiling. I therefore make no claim, broadly considered, to such construction, my invention being for the peculiar construction of the parts, as hereinafter particularly recited; neither doIclairn, broadly, the employment of aball as the brake or engaging device between the adjustable and stationary part of the standard.

I claimrIhe combination of the stationary outer tube, A, the inner adjustable tube, C, theshoe D, attached to or made a part of the outer tube, the said shoe being within the said outer tube, the said shoe constructed with a recess open to the inner surface of the outer tube upon one side, the side of the recess opposite .to the tube being inclined longitudinally toward the open side of the shoe, a spherical roller, F, within said shoe, the diameter of the said spherical roller being greater than the least distance between the said inclined side of the shoe and the opposite side of the inner tube, a spring in the recess of the shoe and upon which the said roller rests, the tendency of the spring being to force the roller to the narrower portion of the recess in the shoe, and a rod, G, extending from said recess and terminating in a suitable handle for moving said rod, the said rod extending into said recess and so as to bear upon said ball opposite said spring, substantially as described.

EUGENE I-I. IECK.

Vitnesses:

Jol-IN E. EARLE, FRED C. EARLE.

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