Vintage Camera Patent Drawing From 1887
by Carlos Diaz
Title
Vintage Camera Patent Drawing From 1887
Artist
Carlos Diaz
Medium
Digital Art - Digital Art
Description
Vintage Camera Patent Drawing From 1887 - Charcoal - by Carlos Diaz
Be it known that LTHOMAS H. BLAIR, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Photographic Cameras; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of ref erence marked thereon, which form a part of this specification.
This invention relates to photographic cameras; and it consists in the peculiar arrangement of its structural parts, as well as the manner of mounting and adjusting the lens with respect to the sensitized plate, in order to bring within the field the objects desired and then properly position them upon the plate then to be exposed. 7
My improvements are intended to do away with the swinging back now generally attached to camera-boxes; hence it is only necessary to set the tripod-top so that it will swing in horizontal planes,when it will be seen that the plate will stand vertical; but in avoiding the use of the swinging back, it then becomes necessary to arrange and mount the lens so that the operator may be able to adjust it horizontally as well as vertically with respect to the plate, in order to bring the desired objects thereon. HenceIhave provided a pivotal extension-frame furnished with a rack and pinion, by means of which the lens is moved toward or away from the plate in the act of focusing. This frame, as before preraised, is pivoted and is capable of horizontal or vertical swinging movements.
My improvementsfurther consist in providing the camera-box with a swinging lid adapted to serve as a cover to the front of the camera-box when the latter is closed; but when said camera is to be actively used it is then swung out at right angles, or therea'bout, to said box and co-operates with the pivotal frame by a rod and locking-nut. By the latter device the lens, after being adjusted, is held in the proper position so long as it is desired,while the frame is supported and braced.
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August 20th, 2019
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