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US 3,942,275 AGranted
Reading scroll machine
OwnerDennis W. Fasnachtinventor
Life of this patent
Estimating the term…
Abstract
The pages of a book are placed on a long strip of paper for making a scroll. The machine for winding the scroll has rollers positioned for displaying any desired portion to be read. A motor for rotating the rollers is controlled by a magnetic switch that is easily operated by inflating an air bag. The bag may be inflated either by having a person squeeze a bulb connected through a tube to the bag, or by having a severely handicapped person hold the end of a tube in his mouth and blow into the tube.
Claims3
A reading scroll machine comprising:
- first and second rollers, a book to be rolled like a scroll between said rollers,
- a frame, said frame having supporting means for rotatively mounting said rollers and displaying a plane portion of said book that is unwound between said rollers, means for viewing said unwound portion from outside said frame,
- an electric motor, means for rotatively coupling said motor to one of said rollers, a magnetic switch connected to said motor for controlling the operation thereof, an actuator for operating said switch comprising a leaf spring having a magnet on the free end thereof, said switch and said leaf spring being juxtaposed, said actuator being operable easily to change the distance between said magnet and said magnetic switch for operating said switch between an off-position and an on-position,
- an enclosure with an exposed flexible membrane, mounting means for holding said enclosure adjacent said actuator and switch such that outward movement of said membrane operates said actuator and thereby operates said magnetic switch to said on-position, means for selectively filling said enclosure with air under low pressure, said enclosure while filled with air under pressure causing said membrane to press against said actuator for operating said switch to said on-position to cause said motor to operate, and the operation of said motor rotating said one of said rollers and thereby sequentially displaying different portions of said book.
1 more element
Dependencies are inferred from the claim text.