UNT Libraries Government Documents Department - 29 Matching Results

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Automatic Telephone-Exchange System.

Description: Patent for "a simple system and arrangement which is especially adapted for a telephone exchange, which enables the instruments to be connected by a single wire, which dispenses with the use of an operator at the central station, which has automatic means for registering the messages sent by each subscriber, and which is provided with an automatic switching device by means of which one subscriber may connect with any other" (lines 10-19).
Date: December 5, 1893
Creator: Serdinko, John


Description: Patent for a butter container that holds butter and protects against direct handling until it is served. This is inexpensive, two-piece and very easy to clean.
Date: August 12, 1913
Creator: Eiband, Ernst A.


Description: Patent for a "simple, inexpensive, and convenient hand-operated machine employing an oscillating knife or cutter for severing the stalk or stem and at at the same time clamping the shucks, so that the ear, when turned, will effect the bursting open of the shucks, thus permitting the ready removal of the ear" (lines 8-15).
Date: December 22, 1896
Creator: Willmann, Joseph


Description: Patent for improvements in drills by providing “a frame which may be readily attached to any suitable support and wherein the drill-spindle may be engaged for operation by a common form of chest-brace.” (Lines 9-13) The frame would enable the stock-rest to adjust in proper positions to receive different thicknesses of stock.” (Lines 15-17) Illustration is included.
Date: April 2, 1901
Creator: Willmann, Joseph


Description: Patent for a harness saddle that will always maintain its shape and will be comfortable for the animal, thus preventing sores from forming. Illustrations included.
Date: May 17, 1910
Creator: Homann, Alfred

Improvement in Glass Globes or Reservoirs for Lamps.

Description: Patent for an "invention to prevent the breaking of glass globes used in kerosene lamps as reservoirs for the burning fluid; and this invention consists in the application around the reservoir of a rubber ring let into a groove, but projecting sufficiently to receive the concussion in case the lamp is overthrown." (Lines 10-16) Includes instructions and illustrations.
Date: April 16, 1872
Creator: Otto, Adolph

Portable Dark Room.

Description: Patent for a new and improved portable dark room. This design "consists in a box provided with an opening in one side and a sleeve of pliable material extending outward from this opening, which box contains two smaller boxes for receiving the exposed and unexposed dry plates. The box is provided with a handle for carrying it" (lines 13-19).
Date: February 28, 1882
Creator: Serdinko, John

Pump-Operated Device

Description: Patent for "combination with a pump-operating crank-shaft and a walking-beam operatively connected with the pump-rod, means for preventing sudden movements of the pump-rod at the ends of its strokes and for assisting in starting the rod in its reciprocations" (lines 10-15).
Date: May 28, 1901
Creator: Crawford, Charles Buchanan

Rotary Force Pump.

Description: Patent for a new and improved rotary force-pump. This design "consists in a rotary force-pump constructed with a tubular standard provided with one or more flexible tubes having interior half-tubes and an interior cylinder mounted upon a crank-shaft and provided with adjustable bars carrying rollers whereby a liquid can be raised by the successive action of the said rollers upon the said flexible tubes" (lines 22-29).
Date: April 14, 1885
Creator: Serdinko, John

Saddle-Tree Fork.

Description: Patent for a new and improved saddle-tree fork. This design "strengthen[s] the iron fork by means of a bent wooden part" (lines 14-15). It also utilizes ribs running into and through the neck cavity, which strengthens the neck of the saddle, as when bearing the strain of a lasso.
Date: February 17, 1880
Creator: Mittendorf, Gustav Adolph


Description: Patent for a serving tray with individual spots for various dishes, which turns on rollers intended for use at hotels, restaurants, and boarding houses.
Date: June 16, 1908
Creator: Heise, Otto


Description: Patent for an improved, simple, and durable sulky-plow that "may be shifted laterally by the driver during the act of plowing whenever such action is deemed advisable, thereby changing the cut whenever occasion may demand" (lines 10-14). The plow can attach to any type of wheeled plow.
Date: June 20, 1893
Creator: Willmann, Joseph