US94120A - k napp - Google Patents

Description

para cpm;

GEORGE s. Kurier, or

vLetters-Patent No. 94,120, datedAngnst 24, 1869.

PHOTOGRAPHIC CAMERA-STAND.

The Schedule referred to in these Letters Patent and making part of; the same.

To all whom it may concern:

Be it known that I, GEORGE S. KNAPP, of Winona, inthe county-ot` Winona, and State of Minnesota, have invented certain new and useful Improvements in Stands for Photographers and others; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon, like letters indicating'like parts wherever they occur.

'.lo enable those skilled in the art to vconstruct and use'iny invention,.I will proceed to describeit.

My invention relates to camerastands for photographers; and consists in a novel manner of constructing and arranging the same, so as to render the instru ment capable of various adjustments and inclinations, as hereinafter described; iu providing thisjadjus'table iiame with a rack or frame tohold pictures while being copied; and, in mounting the whole upon a cup,

board or case, to contain 'additional instruments, Snc.

, In the drawiug- Figure 1 is a longitudinal vertical section through my stand, on the `line :on: of iig. 2;

Figure 2 is a cross-section of the same, ou the. line y y 0f fig 1; and

Figure 3 is a vertical section through the centre of a tripod, upon which the adjustable stand is placed for field-use. v

In constructing my apparatus, I provide a cupboard or closet, A, and make a hole in its top of the proper size to admit a post or standard, B; and'be1ow,and on opposite sides of .this hole, I secure the two parallel, vertical guides or ways f-,as shown in fig. 1.

Through the hole in the top of the cupboard, I insert the post B, running between the guides f, and provide it on one side with Aa rack, a, meshing into a pinion, c on the inner end of a horizontal shaft, c.

lhe outer end of the shaft c projects outside of the cupboard, and is provided with a hand-wheel, by turning which the pinion c is operated, and the post B raised or lowered. 1 Y

Through one side ofthe cupboard, I insert-arod, K, extendingdn to the post B, andprovided for a portion of its length with a screw-thread, running in a stationary nut, so that by turning this rod, its inner end may be forced against the post, and thus lock the latter in place.

Incxt construct a stand or frame, C, mounted upon a rod-or standard, (ir, and insert the lower end of this rod into'a hole in the top ofthe post 'or rack-barB, as in fig. 1. 1

The manner of connecting the frame C to the rod G is clearly shown in tig. I; the frame having secured to its under side, at the middle, a ball, ,-and the upper end of the rod having a corresponding recess, into which the ball is set, thus supporting the frame, but allowing it to be turned and tipped in any direction upon the ball as a pivot.

' To provide for locking the frame C in any of the required positions, I take two semicircular bars, c and f, and passt-hem at right angles to each other through slots in the post or rod G, and hinge their ends to the under side of flame C, as shown, and, in the rod iGr, I

locate two set-screws, g and h,'each of which bears against one of the said bars, so that after adjusting the table as desired, it may b e fastenedligidly bysetting up the screws g and h, and thus clamping the v'curved 0n the front end of the frame C, I form a raised ledge, and place on its rear side one or more points or projections o, under which the frontvedge of the camera is engaged. I also locate von or across the frame C, a sliding bar, p, having pivoted ou it a lever, k', to the rear end of which is pivoted a cam-lever, t, the lower side'of this lever, t, bearing on a'piu projecting from a spring, an, which latter is secured to the under side of bar 11, between it and the frame C. i

The camera being placed upon the frame G, with its front edge 'under orA against points i, the bar p is shoved forward until the frontend of lever Men gages over the hrear edge of the camera, and then the lever t turned down, thus lockinguthe lever down, and at the same time forcingthe spring m down, and clamping the bar p in place, and securing the instrument rigidly to' the frame C.

At' one ,end 'of the frame C, I locate a spirit-level, q, by which to adjust the frame.

In the upper part of the cupboard A, I locate drawers F, to contain tools, chemicals, Src.

In this manner,I produce a very strong and simple stand, to which the camera may be secured, and then raised, lowered, turned, tipped, or otherwise adjusted, as occasion requires.

For the purpose of holding pictures to be copied, I provide a detachable frame or rack, D, having its siderails, r, passed through guides or blocks, which arc secured to the under side of the frame C.

This frame D may be adj usted by means of a thumbscrew, s, one end o f which is connected to thc frame C, this screw running through a stationary stud, t', onl frame I), as shown in gnl.

At the outer end of the frame I), I place a block, lm', moving in a slot which extends across the frame, and which .may be adjusted in said slot by means of a screw, x, shownvclearly in figs. l and 2.

Through the block on', I make an opening and insert a'vertical bar, y, which may be moved up or down through the block, by turning a screw-rod, 5, provided for the purpose.

On the bar y, vl place a movable block or jaw, c', provided with a set-screw, b', by which it may be fastened at any point on the bar; and on the upper end of the bar, I form a head, f', with a projecting lip or face.

, lhe picture to be copied is placed on the front of the bar y, with its upper edge engaged under head f', and t-he clamp a. is shoved up against its lower edge, and fastened by the set-screw, thus fastening the picture in anupright position in front of the instrument.

The screws x and z are turned to adjust the picture to the exact position required.

NVhen the frame D is not required for use, the nut t is removedand\the frame withdrawn ii'om the guides or blocks.

When my apparatus is to be used out of doors or in the field, I place the adjustable flame C upon a. tripod, R, shown in fig. 3.

lhis tripod is provided with. au adjifstable thimblc or tube, d, into whiclrthe standard G is set, and fastened by a thumb-screw, e', the tube cl being raised as desired, and lastened by thumb-screw c', shown in fig. 3.

In this manner, I produce a stand capable of universal adjustinenaand still of great simplicity.

By slight variations of the devices for` clamping the instruments, I can'adapt my stand to the use of sux"- veyors, astronomers, and similar purposes, as well as for photographers.

Having thus described my invention,

1. The frame C, provided with the ball i, hearing in the socket vj of post G, and having the hinged segments e and f, arranged as described.

GEO. KNAW.

lVitnesses:

JosIAH H. JoNEs, JOHN J. RANDALL.

2. The detachable and adjustable frame D,provided

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