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Adding-Machine

Description: Patent for improvements to adding machines, which is key-operated and includes a vertically disposed shaft and a means to actuate the sliding plate.
Date: January 5, 1915
Creator: Gatewood, William F.
Item Type: Refine your search to only Patent

Advertising Device.

Description: Patent for an advertising machine that is motor-operated and will display a succession of slides that can be shown during the day or at night. It includes a light to help show slides to the public, a shutter that automatically and intermittently displays slides, a lens for projecting slides on a distant screen, and a master slide to be shown with each slide. The patent includes illustrations.
Date: August 5, 1913
Creator: Bernard, Oscar C.
Item Type: Refine your search to only Patent

Advertising-Sign.

Description: Patent for an advertisement sign with a translucent display band that illuminates different sections of letters, numbers, or figures, in various colors, giving the appearance of animation.
Date: August 5, 1919
Creator: Craig, Richard M.
Item Type: Refine your search to only Patent

Aeroplane

Description: Patent for an aeroplane. This invention does not use any mechanism to maintain the planes equilibrium. Illustration included.
Date: November 5, 1912
Creator: Goebel, Alois
Item Type: Refine your search to only Patent

Airship-Destroyer.

Description: Patent for a new airship-destroyer with the new ability to fire pellets and bombs in various directions and differing altitudes (lines 8-12), to ignite fuses to prime the device for firing at a predetermined altitude (lines 13-19), to incorporate a bomb to explode upon contact with the airship (lines 20-24), and to provide the projectile with a rocket to propel it to a greater altitude (lines 25-28).
Date: November 5, 1918
Creator: Saladiner, Joseph M.
Item Type: Refine your search to only Patent

Animal-Trap.

Description: Patent for improvements in animal-traps that would be capable of catching two animals; to set the trap, bait is placed upon the hooked ends of the bait-hooks, the jaws are elevated and retained in a position by the link-catches, which have the lower hooked ends engaging the trigger, which has its free end engaging the eye at the inner end of the bait hooks, thus setting the trap, (lines 66-73) ready to catch animals. Illustration is included.
Date: May 5, 1891
Creator: Anderson, Henry Clay
Item Type: Refine your search to only Patent

Animal Trap.

Description: Patent for a new and improved animal-trap. This design consists "[i]n a trap comprising a well having ingress-openings in diametrically-opposite sides, the combination, with a cage constructed to move vertically in the said well, of plates mounted in ways and constructed to slide past and cover the said openings and having connection with the cage to counterbalance the same" (lines 86-93).
Date: April 5, 1892
Creator: McLeod, Charlie Mike
Item Type: Refine your search to only Patent

Animal-Trap

Description: Patent for an animal trap which is to be sprung by the animal when the bait is touched. It is constructed in such a manner that the animal will be instantly killed. The metal parts of the trap are to create a strong and durable trap and to be manufactured at a small expense.
Date: April 5, 1921
Creator: Brewington, Philip Jennings
Item Type: Refine your search to only Patent

Animated Sign

Description: Patent for a display apparatus to be implemented as animated advertising signs which successively display different images by controlling the timing of changes in the colors of light used to flood the front and to backlight the display surfaces. The images are created in such a way that certain elements created in certain colors become absorbed or are made invisible when illuminated by certain colors of light. An apparatus controls the cyclical changes of the colored lights used by the sign.
Date: September 5, 1922
Creator: Craig, Richard M.
Item Type: Refine your search to only Patent
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