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Apparatus for Sulfur Mining

Description: Patent for "new and useful improvement" for sulfur mining by Mr. Robert Carmichael. This device has particular application for mining in subterranean environments, "by use of pumping a heated fluid down into contact with a sulfur strata" (lines 14-15).
Date: December 9, 1919
Creator: Carmichael, Robert E.
Item Type: Refine your search to only Patent

Device for Distributing Insect Powder.

Description: Patent for a new and improved bug sprayer. This design consists in "the combination of the body of the bellows and the perforate wall or sieve arranged longitudinally therein, dividing the bellows into two compartments, with a nozzle or an air-outlet communicating with one compartment, whereby material placed in the other compartment on the opposite side of the sieve is agitated by the operation of the bellows and delivered to the air-blast in a comminuted state" (lines 25-35).
Date: December 24, 1889
Creator: Hogarth, William H. J.
Item Type: Refine your search to only Patent

Improvement in Car-Axle Bearings.

Description: Patent for improvement in car-axle bearings in which "it consists in a box having a chambered back for containing oil, and having grooves along the straight edges of its bearing-surface for receiving a wick, the ends of which extend through holes in the box into the oil reservoir.”
Date: December 3, 1878
Creator: Stratton, Asa E., Jr.
Item Type: Refine your search to only Patent

Oar Lock Attachment.

Description: Patent for an oar-lock attachment that allows the oar to be removed but not easily disconnected, using a hook on the oar with a spring plate and an eye on the boat gunwale, with illustrations.
Date: December 20, 1892
Creator: Livingston, Joseph R.
Item Type: Refine your search to only Patent
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