US Patent: 780,382
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| Panoramic Camera
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Patentee:
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| David A. Reavill (exact or similar names) - Rochester, Monroe County, NY |
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Patent Dates:
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| Applied: |
Sep. 12, 1904 |
| Granted: |
Jan. 17, 1905 |
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Patent Pictures:
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Joel Havens
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Description: |
| Commercial production began in 1905 under the Rochester Panoramic Camera Company. By 1907, the patent and manufacturing rights were absorbed by Eastman Kodak (produced by their Folmer & Schwing division), and later by the Folmer Graflex Corporation.
Abstract:
My invention relates to panoramic cameras, and is immediately concerned with the mechanism through which the camera-box is revolved horizontally and by which the film is moved within the box in the requisite direction and at proper speed, taking into consideration the focal length of the lens used during any particular operation. To produce the best photographic representation by means of revolving cameras, it is found desirable that a longitudinal extent of film exposed during a single revolution or any part thereof shall equal the circumference of a circle or traversed arc of it described with the radius having the length of the focal distance of the lens used. It is often expedient, owing to peculiar conditions of light, proximity, and arrangement of objects sought to he included in a picture, to employ different lenses each having its own focal length, in correspondence with which the film must he moved. Heretofore this has been accomplished by changing the pinion on the feed-roll shaft that engages the fixed circular gear upon the support or tripod, the pinion and fixed gear being elements possessed in common by numerous forms of these instruments. Such practice necessitates several separate pinions and demands a certain amount of time and care in removing and replacing them, in addition to the liability of loss during constant carrying of the camera about. The object of my invention is to produce a camera equipped with an adjustable multiple pinion or roller and auxiliary devices enabling the photographer to substitute for another any lens called for by the circumstances and to move his film with appropriate velocity.
Claim:
In a panoramic camera, the combination with a support, of an adjustable and revolable camera-box having a film-feeding roll, roll-rotating devices whereby said roll is rotated with respect to the said box, the said devices including a stationary element on the camera-support and a rotating element adjustably secured upon the axis of said roll, the said rotating element having portions of different diameters whereby different speeds of rotation may be given said roll, and a motor by which said box and rotating element are actuated. |
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