US280776A - Camera-stand - Google Patents

Description

@No Model.) 2 sheets-sheet 2.

J. H. ALTHEIDE.

' l CAMERA STAND. No. 280,776. Patented July 10, 1883.

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PATENT OFFICEe JOsFrH H. ALTHFIDF,

OF QUINOY, iLLiNOis.

CAM ERA-STAND.A

SPECIFICATION forming part ofl Letters Patent No. 280,776, dated July 10, 1883,

Application tiled December 12,1882.

To all whom it may concern.-

Be it known that I, JosErH H. ALTHEIDE, of Quincy, in the county of Adams and/State of Illinois, have invented a new and useful Improvement in Camera-Stands 5 and I do hereby declare that the following is a full, clear, and` running in grooves below the table supporting a copying-frame.

In the accompanying drawings, Figure 1 is a perspective view ofthe entire stand; Fig. 2, a cross-section, showing the weight and its connections. Figs 3 and 4 represent details.y

My improved camera-stand is composed of two rectangular frames, A B, formed of corner-posts, top andbottom rails mortised therein, and intermediate cross-braces. In the corner-posts of the frame A are formed ways, and in these ways slide the corner-posts of the frame B. The frameBis guided in its vertical movement by a strip, a, stepped in cross-pieces b 'c of said frame A, the said strip being setat an angle to the direc'tion of the sides of the frame. This strip a passes through a slot in a platform, d, which connects two of the cross-braces -of the frame A. The frame B is thus guided in its vertical movement. The frameB is counterbalanced (except when elevated, as hereinafter described) by a weight, C, secured by a rope, e, to the strip a, such weight being guided in its movement by rods f .f/,passin g through holes in ears or iianges 7L.

Mounted on suitable journal-bearings in the,

outward, and is j ournaled in one of the cross- (No model.)

pieces of the frame Af At its outer end is a crank, 7c, and a pawl and ratchet, l m, the crank being within easy and convenient reach of the operator, so that it can be turnedby him without changing his position or removing the focusing-cloth. rllhe pinion E and pulley d bear upon the strip a on opposite sides, and to'- gether prevent any tendency on the part of said strip to bend and bind in the slot in which it works.

The'table-top is hinged to the frame B at o, and at its forward end ishinged the guide-strip p, which slides vertically in a way formed by cleats q r, secured to frame B. On the cleat gis a rack, s, in which meshes a pinion, t, secured on ashort pin provided with a handle, u. This handle is directly in front of the operator when focusing 7 A brale,v, is also provided, which bears against one of the corner-posts of the inner frame, B.

rIhe extension-slide is shown at H. It runs in a way formed by two strips, fw x, below the table, and in its end is removably pivoted the arm x, which can be folded into a slot in the slide H, when such slide is below the table. The copying-plate fw is adjustably secured in a slot, y, ofthe arm x', and is itself provided with a transverse slot, z, and with a set-screw, by which it can be setv at any angle.

As shown in Fig. 3, the handle u, to which the pinion t is attached, is mounted on a screw shaft, so'that it can be moved in or out. When forced inward against the strip p, it holds the top at any angle by friction, and on being` slightly loosened the top can be dropped by gravity, and checked at any point by a turn of this handle.

Having described my invention, I claim- 1. rlhe combination, with the square frame A, having the corner-posts provided with ways, of the sliding frame B, the platform d, and the central guiding-strip, a..

2. rIhe combination of the frames A B, the platform and guiding-strip, and the frictionroller.

3. Combined with the frame A, having the diagonally-slotted platform, the sliding frame B, having the gui de-strip a, adapted to such slot.

4. rIhe combination of the frames A and B,

the pawl andratchet.

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(No Model.) P. ARNAUD 8u L. GAYETTE.

STBBLYARD.

Patented July 10', 1883.

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