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Bee Hive.

Description: Patent for a new and improved bee hive. This design consists of "the combination, with the removable section, having the right-angled slots and the comb-frames of the securing-bar" (lines 95-98).
Date: September 20, 1881
Creator: Norwood, John M.
Item Type: Refine your search to only Patent

Rack and Pinion Mechanism.

Description: Patent for a new and improved rack-and-pinion mechanism. This design "relates to improvements on rack-and-pinion mechanism to dispense with the connecting-rod on steam-engines, whereby a more equal, constant motive power at any point of the piston-stroke, and no dead or weak points of the same, will be obtained" (lines 9-14).
Date: October 22, 1889
Creator: MacDonald, Peter M.
Item Type: Refine your search to only Patent
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