UNT Libraries Government Documents Department - 140 Matching Results

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Calculator

Description: Patent for a calculator which consists of semicircular device with movable pointers and number indexes printed on it that allows the pointers to be moved to different numbers to produce the answer to a math problem such as calculating the cost of goods sold by the pound in a store.
Date: December 21, 1909
Creator: Goss, George Wilson
Item Type: Refine your search to only Patent

Corn-Planter.

Description: Patent relating to "a novel corn-planter, and has for its object the production of a simple, durable, and efficient planting attachment which may be applied to an ordinary plow and which when so applied will automatically effect the distribution of corn or other grain at desired intervals" (lines 12-18).
Date: December 21, 1897
Creator: Ellis, William Wesley
Item Type: Refine your search to only Patent

Cultivator Attachment

Description: Patent for a cultivator attachment "of a plurality of cutter blades which are adapted to be adjustably secured to the supporting frame of a cultivator in such a manner as to efficiently cut the weeds and dig into the soil without injuring the plants which may pass therebetween" (lines 12-17), including illustrations.
Date: December 21, 1915
Creator: Doak, Clifton
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Device for Sheltering Animals.

Description: Patent for a new and improved animal shelter. This design "relates to a device which may be adapted for use as a hen's nest, a dog-kennel, a stable for domestic animals, or for analogous purposes. The principle of construction prevalent in all these different adaptations for use of the device consists of certain improved means for automatically closing the door as the animal steps into a vertically-swinging compartment, and for automatically opening the door as the animal leaves said swinging c… more
Date: December 21, 1880
Creator: Austin, John Overton
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Door-Hanger.

Description: Patent for a new and useful door hanger. This invention is to "provide a simple and inexpensive device so constructed as to avoid dismounting and at the same time enable a door, window, or an equivalent device to be operated with the minimum friction" (line 9-13).
Date: December 21, 1897
Creator: Masterson, Bernard W.
Item Type: Refine your search to only Patent

Engine-Canopy for Motor-Vehicles.

Description: Patent for an improved and cheaper engine canopy for motor vehicles, that "may be applied to any conventional auto-mobile without the necessity of structural change" (lines 20-22) including illustrations and instructions.
Date: December 21, 1915
Creator: Preston, Frank W.
Item Type: Refine your search to only Patent

Fishing-Tool

Description: Patent for a fishing tool that is "light, and of simple construction... (line 37)." The fishing tool is also meant to be let down into well bores without the rods or tubing getting stuck and automatically locks.
Date: December 21, 1920
Creator: McMillian, John F.
Item Type: Refine your search to only Patent

Huller

Description: Patent for hullers for removing hulls of shells for seeds or other similar products. The invention "is of especial utility in hullers for cottons seeds." However, it is noted that a cotton seed huller is only one adaptation of the invention.
Date: December 21, 1920
Creator: Vardell, Arthur A. & Highland Gee Vardell
Item Type: Refine your search to only Patent

Improvement in Gang-Plows.

Description: Patent for "a novel means of hanging the gang of plows beneath the draft-frame, in combination with levers and link-connections, whereby the plows can be adjusted to run at any desired depth, and firmly held after the adjustment." (Lines 18-23) Includes instructions and illustrations.
Date: December 21, 1875
Creator: McCormick, John R.
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Improvement in Rotary Dredgers.

Description: Patent for an improved rotary dredging-machine operated by adjustment from the engine through gearing enabling the manipulation of "a heavier wheel than would otherwise be practicable" (lines 71-72) with illustrations.
Date: December 21, 1875
Creator: Hawley, Abel
Item Type: Refine your search to only Patent

Improvement in Seed-Planters.

Description: Patent for an improved seed-planter "which will deposit the seeds in the requisite quantities and proper distances apart, and which will cover and mark the bills, so that a plowman will not be at a loss where to start at the commencement of a new row, and after having passed around tree-stumps or other obstructions, as he can always see the marks on the preceding rows" (lines 16-23) with illustrations.
Date: December 21, 1869
Creator: Woods, David C.
Item Type: Refine your search to only Patent

Improvement in Sewing-Machine Thread-Guards.

Description: Patent for "a guard attachment to the Wheeler & Wilson sewing-machine for preventing the thread from being thrown off the tension by the work, and for preventing the thread from running off the spool onto the spindle." (Lines 6-11) Includes instructions and illustrations.
Date: December 21, 1875
Creator: Roosevelt, Lillian
Item Type: Refine your search to only Patent
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