US373303A

US373303A - William patzer

Info

Publication number: US373303A
Authority: US
Publication date: 1887-11-15
Anticipated expiration: 1904-11-15

Description

Patented Nov. 15, 1887.

N. PETERS. Pmmuxhngnpher, washington. D C.

(No Model.)

W. PATZER. LAMP STANDARD.

Zay 1 UNITED STATns ATENT Trios.

WILLIAM PATZER, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE MERIDEN BRONZE COMPANY, OF SAME PLACE.

LAMP-STANDARD.

SPECIFICATION forming part o Letters Patent No. 373,303, dated November I 1887.

Application liled April 18, 1887.

To @ZZ whom it may concern:

Be it known that I, WILLIAM Pilfrznn., of Meriden, in the county of New Haven and State of Connecticut, have invented a new Im- 5 provement in Lamp-Standards; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, inm

. Figure 1, a side View of a complete standard and lamp; Fig. 2, a vertical central section of the two tubes and the adjusting mechanism enlarged; Figs; 3 and 4, modifications in the adjusting mechanism.

This invention relates to an improvement in standards for that class of lamps which consist of a base adapted to stand upon the door and the standard made adjustable to set the lamp to different elevations.

The object of this invention is the construction Tof, an engaging device between thetwo parts of the standard, whereby the standard may be readily adjusted, yet securely held at any desired position and without liability oi' the movable part accidentally sliding downward. l

A represents the outer tube, which is supported vertically in the base in the usual manner, and so as to be stationary. B represents the inner tube, which is of a diameter substantially corresponding to the internal diameter of the outer tube, and so as to slide freely up and down. In the lower end of the tube B a cam, C, is hinged at one side, as at a, and eX- tends across the tube to thelopposite side, and so as to bear upon that side of theinner tube, as seen in Fig. `2. The length of the cam from o the pivot to the free end is somewhat greater than the actual distance from that bearingpoint to the inside of the outer tube, and so that the cam, whileits free end bears upon the opposite side, will stand in an oblique posi- 4 5 tion-that is, its free end will be lower than its hinged point-hence in that condition any tendency to' force the inner tube downward will only cramp the cam against the inside of the outer tube and prevent descent of the in- [50 ner tube; yet as the inner tube is raised it will Serial No. 235,139. (No model.)

lift the hinge-point first, and so that the free end will readily slide upward without any cousiderable amount of friction, thus permitting a free upward movement of the inner tube, but the tube is cramped against downward movement.

Within the tube B is a suitable spring, D, adapted tovhold the cam upward to its cramping position, but yield for the free upward movement, as before described. Within the 6o inner tube is a vertical rod, E, which rests upon the upper surface of the cam at a point distant from its pivot, and extends upward through the tube B. At some. point near the upper end of the tube B a collar, F, is fixed to the tube, and this is best made at the termination-of the tube, and at the point where the lamp is secured, as seen in Fig. 1. Trans-A versely in this collar a slide, G, is arranged, extending outward through the collar at one 7o side, provided with a suitable head, against which the thumb may be placed. This slide upon its under side is made inclined, or of cam shape, as at b. The rod E extends upward, so that while its lower endrests upon the cam its upper end will stand beneath the incline b of the slide G, the rod being held up by the spring of the cam.

If the slide G be pressed inward, as indicated in. broken lines, Fig. 2, the incline b will 8o force the rod E downward and correspondingly turn the cam, as indicated in broken lines, so as to take the cam out of engagement` with the inside of the outer tube. Then, while holding the slide G thus pressed inward and the cam downward, the inner tube may be lowered or raised to any desirable extent without engagement between the cam and the inner tube, thus leaving the inner tube free for any required adjustment; but so soon as the 9o thumb is removed from the slide G, then the spring C reacts, brings the cam to itsbearing, forces the rod E upward, and the rod, acting against the incline on the slide, forces the slide outward to its normal position, so that as soon as the slide G is released the cam1 comes into immediate action; hence the inner tube can only move downward so long as the slide G is held inward, depressing the cam.

Instead of the radial or transverse slide G rco to operate the cani, it may be done by a lever, as seen in Fig. 3, adapted to bear upon the upper end ofthe rod, so that by pressing the lever downward, as seen in brokenlines, the rod will be forced downward, and the Cain released accordingly, the spring when free reacting to bring the lever to its up position. l however prefer the transverse slide.

The rod and Slid'e may be omitted, as seen in Fig. 4; but in this ease the earn must beadjusted so as to bear against the inside of the outer tube only with sufcient force to hold the outer and inner tubes in engagement, and so that sufficient power being applied to the tube B to force it downward, the cani will slide upon the inner surface of the outer tube, the spring holding the cam up to its engagement with the outer tube, but so as to leaveit free to slide when the inner tube is drawn upward.

I claim- 1. The combination of the outer tube, A, the inner tube, B, vertically adjustable in the outer tube, the cani C, hung at one side ofthe inner tube upon an axis at right angles to the axis of the tube and extending across the inner tube to the opposite side, but in a down wardly-inclined direction, and oi'alength that its free end may bear against the inner surface of the-outer tube, a rod within the inner tube, its lower end adapted to bear upon the said earn, and a bearing-piece arranged transversely across the inner tube above said rod and so as to bear upon its upper end, the said bearing-pieee extending radially outside said inner tube, with a spring between said cani and inner tube, the tendency of which is to lift tbeeani, all substantially as described.

2. The combination of the outer tube, A, the inner tube, B, the cam C, hung in thelower end of the inner tube, a spring between the inner tube and cam, a rod extending from the cam upward within the inner tube, and a trans verse slide, G, in the upper end of the inner tube, havingits under face inclined,and against which incline the upper end of the said rod rests, substantially as described.

WILLTM PATZER.

Witnesses:

E. A. MERRIMAN, H. B. ALLEN.