US632431A - Photographic camera. - Google Patents

Description

UNITED STATES PATENT OFFICE.

ISAAC G. SIGLER, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF .TO NATHAN lV. TARR AND HARRY MCCOMB, OF KINGMAN, ARIZONA TER- RITORY.

vPHOTOG RAPHIC CAM ERA.

SPECIFICATION forming part of Letters Patent No. 632,431, dated September 5, 1899.

Application led lune 5,1899. Serial No. 719.513. (No model.)

T @ZZ whom, t 'rn/ay concern:

Be it known that I, IsAAc G. SreLEn, a citi zen of the United States, residing at Los Angeles, in the county oi' Los Angeles, State of California, have invented certain new and useful Improvements in Photographic Cameras, of which the following is a specification.

The object of my invention is to provide a simple and improved apparatus that will take a picture of an object which is above the plane of the instrument as correctly as if it were on the same plane with the instrument, which is easily adjusted, and which can be readily closed or folded into compact form.

In the drawings, Figure l is a side elevation of my camera with the lens-holder and part of the back frame or rim removed to better illustrate the adjusting mechanism. Fig. 2 is a bottom view of my camera with parts removed, as in Fig. l, for the same reason.

Referring to the drawings, A is the back frame or rim, 'to which the rear end of the focusing-bellows B is attached. z 5 C is thek -front frame or riln, to which the front end of the bellows B is attached-and to which is also attached vthe lens-holder- (Not shown.)

D is the ground-glass frame aiiixed to the rear of the rim A.

E, E', and F. are three lazy-tongs of identical construction and attachment and are preferably placed at the sides and bottom of the bellows. v

A rod II encircles the front end 01"; the bellows just in the rear of the rim C, to which it is rigidly aiiixed at the corners only in any suitable manner.

The lazy-tongs E, E', and E are attached to rod I-I by means of clips I and J. Clips I are rotative on rod II, but have no sliding movement thereon, while the clips J both rotate and slide upon rod II when the lazy-tongs are being operated. In like manner the lazy 45 tongs are attached to rod L, which encircles the bellows near the rear thereof. Rod L is pivotally mounted in bearing M, aliixed to rim A.

The crank P, rotatively mounted in bear- 5o ings O, attached to rim A, has a screw-thread ed shank N, which carries the screw-threaded nut R, to which the bar S is pivotally attached at one end and to the bar T at the other end. Bar T is pivotally attached to bell-cranks U. These cranks are pivotally mounted on bolts u, which project through the cranks and are secured in the rim A. Bell-cranks U are piv otally attached to clips IV, slidably mounted on rod L.

The bar a is pivotally attached to the members f of the lazy-tongs at h, in the free end of which are one or more holes a', a, and 60". The lever o has a longitudinal slot c for the reception of the stud h. This stud pivots together, in the center, two members of the lazy-tongs and projects beyond these members through the slot c, and thereby forms a pivot on which the lever c oscillates. This longitudinal slot permits a sliding movement of the lever on this stud. At the free end of the lever c is a thumb-piece c for manipulating the lever. A threaded opening in. the lever forms a receptacle into which the thumbscrewf is screwed after passing through the longitudinal slot g in the bar g, forming thereby a pivot therefor and permitting an oscillatory and sliding motion of the bar g, which is pivotally attached to the lazy-tongs at 7L.

7o is a stud attached to clip I at the rear end of the lazytongs F and works in grooved guide Z, this guide being attached to the bottom of rim A,at the center thereof,to prevent a sidewise movement of the lazy-tongs while being operated.

It will be seen that as the lazyltongs are all attached to the rods II and L in the same manner the rods II and L will always be parallel in whatever position the lazytongs may be. It is by the manipulation of these lazytongs that the proper focus is attained. If the usual tripod is used, it is attached to the rim A in the usual manner, the rim A being preferably placed in'avertieal position. By means 0I the thumb-piece e, lever @,and bars a and g the lazy-tongs may be operated-that is, contracted or expanded-as desired, thereby contracting or expanding the bellows B until the proper focus is obtained. IVhen this is accomplished, the thumb-screw j" is IOO turned until the lever c and bar g are clamped tightly together, when the lazy-tongs will be held against further movement. By this mechanism a simple, speedy, and effective means of securing and retaining the proper focus is obtained. It may be stated that usually the rims A and C are parallel, in which case the rod L is parallel to the frame D.

It is sometimes desirable to take a picture of an object elevated above the plane upon which the camera rests. In such case it has been necessary that the camera be tilted back. This throws the back frame or rim and sensitized plate outof the perpendieularand gives a picture narrower at the top than at the bottom, which is very noticeable and objectionable if the camera is near the object. By removing the camera quite a distance away from the object being photographed this effect can be largely but not wholly avoided; but the picture is not so clear or distinct. W'ith my improved camera this is avoided, as the rear rim and sensitized plate may be adjusted vertically (which is the proper position for the sensitized plate to be in to produce the best picture) and the front rim, carrying the lensholder and lens, may be elevated. This is accomplished by rotating the screw-threaded shank N, so as to cause the bell-cranks U to move the bottom part of rod L forward or away from the frame D. As the lazy-tongs are attached to the rods L and Il, to which latter rod is attached the front rim C, which carries the lens-holder and lens, it will be seen that the front rim C will be thrown upward and at an angle to the plane of the frame D and the sensitized plate, thereby permitting the image to be projected on the sensitized plate as though the object being photographed were on the same plane as said plate.

I do not desire to limit myself to the lazytongs for changing the position of the lensholder, as it is obvious that anyother device which will control the front rim may be substituted.

I-Iaving described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A camera, comprising the focusing-bellows I3, carrying lens-holder rim C at its outer end, its rear end being attached to the rim A; lazy-tongs E for adjusting said bellows provided with the longitudinally-slotted adjusting-lever c, carrying on one end the thumbpiece c and the other end pivotally attached to the bar a; the bar a pivoted to the lazytongs at one end and having a plurality of adjusting-holes at the other end; the slotted bar g pivoted to the lazy-tongs at one end and movably attached near the other end to the lever c; the thumb-screw f for gripping the lever c and bar g together; the rods H and L at the front and rear end of the bellows respectively; the crank P having screw-threaded shank N; nut R having screw-threaded opening adapted to receive shank IT and move thereon, and having rod S pivotally attached thereto; rod S forming a working connection between the nut R and bar T; the cranks U pivoted at the center on the bolt u and rotatively attached at one end to bar T and at the other end to the clips XV; and the clips XV slidably mounted on rod L substantially as shown and described.

2. In a photographic camera, the combination of the following elements: the frame A, to which is attached the focusing-bellows B, adapted to be extended and contracted for adjusting the lens; the lazy-tongs E attached to said bellows for extending and contracting the same, and provided with mea-ns for adjustment, substantially as shown; rod L, to which the rear end of the lazy-tongs is attached, the said rod being pivoted to the frame at M and provided with means to cause the lower side of the bar L to approach or recede from the frame D to change the angle of the lens with relation to the sensitized plate substantially as and for the purposes described.

3. In a camera, the crank P, having screwthreaded shank N; screw-threaded nut R on said shank; rod S pivoted at one end to said nut and at the other to rod T; rod- T having a crank U pivoted at each end thereof; oscillating cranks U pivotally attached to the frame A at a; the front end of the levers having a sliding attachment with rod L, carrying the rear end of the lazy-tongs and the rear end of the levers being pivoted to bar T, whereby the rotation of the crank I will tilt the lazy-tongs and change the angle of the lens to the sensitized plate, substantially as shown and described.

4C. The herein-described device for adjusting the lazy-tongs of a camera, comprising lever c and bars a and g and the thumb-screws e, f" and d; the lever c being adjustably connected with bar g by thumb-screw f and having longitudinal slot c for the reception of stud 7L on which the lever c has a sliding movement; one end of the lever being pivoted to bar a, and the other end having thumb piece or screw e; bar a being pivoted to the lazytongs at l) and having a plurality of holes at the other end for attachment to the lever c; thumb-screw cl for connecting bar a with lever c; bar g pivoted to the lazy-tongs at 7L and having longitudinal slot g for the reception of thumb-screw f for connecting barg with lever c, substantially as shown and described.

5. The combination of the lazy-tongs E with the focus-adjusting attachment comprising the lever c, bars a and g, the said lever and bars being workably attached together and to the lazy-tongs as follows the adjusting-lever c, with longitudinal slot c', pivoted to bar a at one end and having thumb-piece e at the other end, a stud 7L in slot c/ mounted on the lazy tongs and forming a sliding attachment of the lever c with the lazy-tongs; the bar a being pivoted at one end to the lazytongs at b and having a plurality of holes, a', a, a'" near the other end` forming bearings IOO IIO

for the thumb-screw CZ on which the lever o is pivoted; the bar g having longitudinal slot g for the reception of the thumb-screw f for slidably attaching bar g to lever c.

6. In combination with the lazy-tongs E, carrying the focus-adj usting lever c and bars a and g, with the herein-described angle-ad justing device comprising the crank P, having screw-threaded shank N 5 screw-threaded nut R; connecting-bar S, pivotally attached at one end to R and at the other to bar T; bar T being pivotally connected with bar S and cranks U; cranks V pivotally mounted on studs u attached to frame A, one arnl of the cranks being pivoted to bar T and the other arm pivoted to clips W; clips W slidably e mounted on bar L and forming a working connection between the cranks and the bar; bar L,to which the lazy-ton gs are connected,pivote ally mounted on the frame at M, whereby the `L as described and means to adjust and hold the lazy-tongs inthe adjusted position substantiallyT as described.

In witness that I claim the foregoing I have hereunto subscribed my name, this 13th day of May, 1899, at Los Angeles, California.

ISAAC G. SIGLER.

IVitnesses:

G. E. HARPHAM, LEVI HARPHAM.

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