Access
Collection
States
Language
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
Improvement in Policemen's Batons.
Patent for an improved policemen's baton made of flexible material, such as india-rubber or gutta-percha, and sometimes an interior metal stem. Using a flexible material makes the baton elastic enough so that no serious injury can be caused, yet it is still effective. Illustration included.
Date:
October 14, 1873
Creator:
Beery, Simon & McDonald, John W.
System:
The Portal to Texas History
Dredging Apparatus.
Patent for an improved dredging apparatus "and it consists in combining with the well known bucket chain form of excavator a suction pipe provided with a hopper and a crushing or breaking device so that the material being deposited in the hopper by the continuously moving buckets will be carried under the action of gravity to the breaking or crushing device and thence through a suction pipe and pump and delivery pipe to the place of deposit" (lines 9-18).
Date:
February 14, 1893
Creator:
Douglas, William M.
System:
The Portal to Texas History