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Rotary Drilling Apparatus

Description: Patent for well drilling apparatus (commonly known as rotaries) with eliminated screws and nuts, and reduced minimum number of parts, and which provides a quickly and easily operable gripping device.
Date: June 22, 1915
Creator: Black, Lee J.

Cotter-Pin Puller

Description: Patent for cottor-pin puller that is useful to pull cotter pins that are secured in shafts, fly wheels or any other devices without bending or twisting or damaging them.
Date: October 31, 1916
Creator: Hayden, Jefferson B.

Hose-Support

Description: Patent for hose support with pivoted standard having a part which is adapted to support the nozzle of the hose, with illustrations.
Date: October 20, 1914
Creator: Praeger, Ewald

Oven

Description: A patent for an oven that has variety of cooking racks that are detachable and strong, durable, light, efficient and inexpensive to produce.
Date: August 25, 1910
Creator: Williams, John W.

Non-refillable bottle

Description: This is a patent for non-refillable bottle and it is made to provide a simple efficient device which can be cheaply constructed and which can effectually prevent from the refilling of the bottle after the original contents have been dispersed.
Date: May 08, 1912
Creator: Bentinck, Grover C. & Bentinck, Henry W.

Passenger Recorder

Description: Patent for "automatically auditing the number of passengers and the distance traveled by said passengers while en route on a train or other public conveyance." (lines 9-13)
Date: September 26, 1911
Creator: Rudolf Brown, of Cuero, Texas.

Automatic Gun Firing Mechanism.

Description: Patent for an automatic gun firing mechanism intended to protect gardens, orchards, and fields by scaring off birds and other animals that destroy crops through automatic discharge of a firearm at predetermined intervals.
Date: March 18, 1913
Creator: Steinocher, John

Churn

Description: Patent for a vertical dash butter churn with a frame that allows for removal of the receptacle with dash parts still attached to the frame, including illustrations.
Date: March 25, 1913
Creator: Collins, Edward L.

Life-Saving Device.

Description: Patent for a collapsible life-saving device that can be stored in little space on a ship or dock and unfolded quickly for use as a flotation device for several persons.
Date: March 18, 1913
Creator: Bradford, Thomas C.