US520950A - Camera - Google Patents

Description

(No Model.)

T. M. CLARK.

CAMERA.

Pggented Jun UNITED STATES PATENT ()FFICE.

THEODORE M. CLARK, OF NEWTON, MASSACHUSETTS.

CAMERA.

SPECIFICATION forming part of Letters Patent No. 520,950, dated June 5, 1894.

Application filed June 19,1893. Serial No. 473,144. (No model.)

To all whom it may concern:

Be it known that I, THEODORE M. CLARK, of Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Cameras, of which the following is a specification.

This invention relates to certain improvements in cameras, and has reference more particularly to hand-cameras, although several of the improvements hereinafter described are equally adapted to other styles of cameras.

The principal objects of the invention are to provide a construction whereby the camera can be compacted in small compass, and to provide uniform means for obtaining foci.

To the above ends, the invention consists in the novel features of construction and combinations of parts hereinafter described and claimed.

Referring to the accompanying drawings, which illustrate the invention: Figure 1 shows an exterior perspective view of the camera in closed adjustment. Fig. 2 shows a side elevation of the camera opened and ready for use. Fig. 3 shows a top plan view of the camera in the adjustment shown in Fig. 2. Fig. 4 is a perspective view of the bellows-case and a portion of the bellows.

The same letters of reference indicate the same parts in all the figures.

The camera is here shown constructed for use in conjunction with a roll-holder, which comprises an outside casing a, which is preferably composed of thin sheet metal, and is formed with rectangular compartments 5 and b at opposite ends, for containing a filmroll and a curtain-shutter roll, which support the film and shutter while they extend across between the compartments at the back of the case. The central compartment 0, between the two end compartments 1) and b, is adapted to contain the bellows d with its case. A groove 0 is formed in the bottom and side walls of the central compartment 0, and a rectangular metal frame cl, which carries the bellows cl, is formed with ribs d and is adapted to slide down into the compartment 0, said ribs engaging the groove 0. The upper side of said frame or bellows carrier is projected, as at (Z and formed with a flange, which engages a corresponding flange formed in. the

is supported by jointed arms f, and forms a platform on which the bellows may be drawn out. An extension of this platform is provided, in the form of a sliding frame f whose side arms fit in slide-ways f formed on the platform f. This extension is adapted to be drawn out in said slide-ways, and its outward movement is limited by catches f formed upon its side arms and adapted to enter holes in the slide-ways f as shown in Fig. 3. The movement may be limited by other means, however, as is evident. The side arms of the extension-frame f form slide-ways for ayoke g, which constitutes a support for uprights g, laterally adjustable on said yoke, and receiving sleeves'g fastened to the lens-front 1' By this means, said lens-front is rendered both laterally and vertically adjustable.

The means employed for adjusting the bellows to secure the proper focus are as follows: Lazy-tongs h are connected at one end with the bottom of the frame 61', and at the opposite end with the lens-front support g; jointed rods h are connected with opposite sides of the lazy-tongs, and extend forward of the lens-front,where they are connected by a yoke 71?; and an adj usting-screw 72. engages said yoke and is supported in a bearing on the extension-frame f It will be seen that, by turning said screw, the bellows may be shortened or lengthened, as desired, to adjust it for different lenses. When the camera is closed, the lens-front support g is slid 0d its ways on the extension frame f 2 and onto ways provided forit in the bellows-frame d. When the side f is lowered, and the extension fram'e drawn out, the lens-front isprojected forward onto said frame. This result is due to the leverage of the lazy-tongs. having a fixed limit of movement, the extension of the bellows by such movement is fixed.

The extension 1 This movement focuses the camera for distances of forty feet (40) or more when a certain size of lens is in use. Thus, when this size of lens is used, no adjustment for focus 5 is necessary in photographing at forty feet or more. When the lens is changed, or when photographing at less distance than forty feet, adjustment for focus is performed by manipulating the screw h This will be regulated 1 a by a scale marked at a suitable place, as upon one of the side arms of the extension frame. The joints in the rods h permit them to be folded up in the frame containing the bellows.

A plate-holder may be employed when it is I 5 desired to use a plate; a back, for carrying the plate-holder, ground glass and other necessaries, with suitably grooved connection to receive the bellows-frame, being substituted for the roll-holder, and a shutter of different 2 type being used instead of the curtain-shutter.

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

1. A camera, comprising in its construction 2 5 a horizontal platform for the bellows, a sliding extension of said platform, a bellows secured at one end to a stationary support, a sliding support on the platform-extension for the lens-front, lazy-tongs connected with a 0 stationary support at one end and with the sliding lens-front support at the opposite end, and aconnection between the lazy-tongs and sliding platform-extension.

2. A camera, comprising in its construction a horizontal platform for the bellows, a sliding extension of said platform, a bellows secured at one end to a stationary support, a sliding support on the platform-extension for the lens-front, lazy-tongs connected with a stationary support at one end and with the sliding lens-front support at the opposite end, rods connected with the central portion of the lazytongs, and a yoke joining said rods andconnected with the platform-extension.

' 3. A camera, comprising in its construction a horizontal platform for the bellows, a sliding extension of said platform, a bellows secured at one end to a stationary support, a sliding support on the platform-extension for the lens-front, lazy-tongs connected with a stationary support at one end and with the sliding lens-front support at the opposite end, rods connected with the central portion of the lazy-tongs, a yoke joining said rods, and an adj usting-screw connecting said yoke with the platform-extension.

4. A camera, comprising in its construction acase having a hinged side, abellows adapted to be fastened at one end in the case and to be contained therein when collapsed, a sliding extension on the hinged side of the case, a sliding support for the lens-front adapted to engage the said extension, lazy-tongs connected at one end with the case and at the other with the lens-front support, and jointed rods connected with the middle portion of the lazy-tongs and with the sliding platform-extension.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 13th day of June, A. D. 1893.

THEODORE M. CLARK,

Witnesses:

A. D. HARRISON, F. PARKER DAvIs,

Images