UNT Libraries Government Documents Department - 91 Matching Results

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Automatic Electric Alarm.

Description: Patent for an automatic electric alarm meant to be hooked up to an automatic dry-pipe sprinkler system, and protects against fire. The alarm goes off when the air in the sprinkler pipes falls below a predetermined level. This invention also signals an alert when there is a leak in the pipes, and is an improvement on the circuit-wires for similar alarms.
Date: January 7, 1896
Creator: Williams, George Bayley
Item Type: Refine your search to only Patent

Bottle-Closure

Description: Patent for a bottle cap for milk bottles and similar types of glass bottles. This is designed to be easily removed, keep the mouth of the bottle clean, and can be cleansed, sterilized, and reused.
Date: December 10, 1918
Creator: Williams, Lee
Item Type: Refine your search to only Patent

Bow Facing Oar

Description: Patent for an oar facing the bow side of the craft. The invention allows for the rower to sit facing the direction of movement of the boat and be able to apply greater amounts of exertion. Illustration included.
Date: October 23, 1906
Creator: Case, William C.
Item Type: Refine your search to only Patent

Can-Opener.

Description: Patent for a can opener that is made from "a single flat piece of metal" (line 17) and is made for ease of operation, reducing the chance of the user cutting themselves.
Date: March 19, 1918
Creator: Williams, Paul E.
Item Type: Refine your search to only Patent

Cattle-Guard.

Description: Patent for a cattle guard for railroad tracks, which is activated by the pressure of a cow stepping on its platform and raises bars to block the the cow from crossing the track. It goes back down automatically when the pressure is removed off the platform.
Date: February 2, 1909
Creator: Crouch, Jim L.
Item Type: Refine your search to only Patent

Check-Row Attachment for Corn-Planters

Description: Patent for "an improved check-row attachment for corn-planting machines, the object of my invention being to provide an efficient mechanism for actuating the seed-dropping mechanism of the corn-planter and which my be operated by the feet of the driver or by a check-wire in such manner as to cause the seeds to be planted in check-rows." (lines 8-15) including illustrations.
Date: June 9, 1903
Creator: Agee, George S.
Item Type: Refine your search to only Patent

Chopping-Ax.

Description: Patent for an ax that is "provided with a poll made in two sections adapted to be clamped or secured to the handle and receive a removable bit or hardened section presenting the cutting edge" (lines 16-20).
Date: January 5, 1897
Creator: Crabtree, James G.
Item Type: Refine your search to only Patent

Clothes-Pin.

Description: Patent for an improved clothes pin made from resilient wire stock and comprised of side by side loops and nipping jaws, including illustrations.
Date: August 11, 1915
Creator: Griffin, William Henry
Item Type: Refine your search to only Patent

Cotton-Chopper.

Description: Patent for a cotton chopper with an attachment for a guided chopper. This cotton chopper allows for the chopping device to engage the soil when the device is driven over various types of soil.
Date: January 9, 1912
Creator: Tedder, Morgan C.
Item Type: Refine your search to only Patent

Cotton-Seed Linter

Description: Patent for an improvement "to prevent the accumulation of lint within the lint-chambers; to provide for the automatic discharge of the lint from the saw-teeth; to provide for a thorough agitation of the seed within the seed-reviews, and, finally, to provide for the delivery of the stripped seed from the machine" (lines 12-19).
Date: August 5, 1890
Creator: O'Brien, Edward J.
Item Type: Refine your search to only Patent
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