Illustrated Catalogue Of Magic Lanterns (after November 1889, probably 1890)

Record Details:

Title:
Illustrated Catalogue Of Magic Lanterns
Date:
after November 1889, probably 1890
Publisher:
Chicago, Il: McIntosh Battery and Optical Company Co.
Volume:
Illustrated Catalogue Of Magic Lanterns
Leaf #:
00038
Language:
English
Collection:
Magic Lantern and Lantern Slide Catalog
Format:
Catalogs
Contributor:
Toverlantaarnmuseum Scheveningen (TOMU)
Sponsor:
A Million Pictures
Coordinator:
Media History Digital Library
Description:
Illustrated catalog of magic lanterns (sciopticons and stereopticons) and lantern slides of American producer and vendor McIntosh Battery & Optical Company in Chicago, Ills, US. Next to the apparatus, a description of its use is included in some sections, especially with respect to the working of light (Pages 1-92). Pages 93-240 are dedicated to lantern slide sets. Subjects covered by the lantern slides reach from instruction on electricity to geography, Christian religion, American History, fairy tales and more. To learn more about Magic Lanterns and Slides, visit the Lucerna Magic Lantern Web Resource at http://slides.uni-trier.de/ .
Date Added:
April 04, 2024
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MCINTOSH BATTER,: AND OPTICAL CO., CHICAGO, ILL., U. S. A. 33 THE HIGH PRESSURE DISSOLVING KEY. The Dissolving key for use with oxygen and hydrogen gases is of improved construction ; and with it more perfect dissolving effects can be accomplished than with anything heretofore man- ufactured. The professional lecturer and traveling exhibitor always uses cylinders or tanks to carry their gas in ; and into a cylinder 12 in. in diameter by 48 in. in height, as much as 50 cubic feet is compressed under enormous steam pressure. When using gas under this high pressure, it has been difficult heretofore to so establish the equilibrium of the gases to each lantern, and to regulate the supply of gas to each lantern, without darkening the screen somewhat when in the act of dissolving. With this new key this difficulty has been entirely obviated ; the gases are under such perfect control, the relative proportion so finely adjusted, that from the beginning to the close of the exhibition there is ab- solutely no difference in the brilliancy of illumination, no matter in what position the lever of dissolving-key may be ; whether on the lower or upper lantern or upon both at the same time. This has been accomplished by having each side of the dissolver entirely separate and distinct ftom the other, so that there is no admixture of the gases, and so regulating the flow of gas, that in