The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular (1877)

Record Details:

Title:
The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular
Date:
1877
Publisher:
Philadelphia, J. A. Moore
Volume:
The sciopticon manual, explaining lantern projection in general, and the sciopticon apparatus in paricular
Leaf #:
00065
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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56 SCIOPTICON MANUAL. mill-wheels, the movable astronomical diagrams, &c. Suppose a mill and the surrounding landscape painted on the fixed disk, and the sails on the disk revolved by rack and pinion, then on turning the handle, the mill appears in operation. THE CHROMA/TROPE. Fig. 21 represents the pulley form of the chromatrope, bnt can give no idea of the dazzling brilliancy of the effects it produces on the screen. There is nothing it resembles so much as the kaleidoscope, with the addition of constant motion and rapid change. It consists of two disks of glass, painted with an almost endless variety of geometrical and other designs in brilliant colors. By turning the handle shown in the figure, the multiplying band causes the rapid revolution of one disk over the other, producing two apparent motions; and with good designs the result " beggars all description." Fig. 91. In another form the motion is accomplished by means of a double rack and pinion, instead of a band. As there are two disks, revolving one over the other, each is necessarily furnished with a toothed rack, and the one pinion works both.