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Four-Wheel Drive

Description: Patent for a four-wheel drive with a combined central driving unit and differential that simplifies construction and improves efficiency in operation.
Date: January 25, 1921
Creator: Littlejohn, Lonzo B.
Item Type: Refine your search to only Patent

Emergency-Tire.

Description: Patent for improvements in emergency tires to provide "an improved emergency tire adapted to be quickly and easily applied to the auto rim in the emergency arising by reason of the regular tire being incapacitated by a "blow-out" or other cause." (lines 12-16)
Date: May 25, 1920
Creator: Shannon, Harris Moore
Item Type: Refine your search to only Patent

Drilling Apparatus

Description: Patent for a drilling apparatus for wells. This drill is designed to be applied to a rotary and used with a pipe tong to screw and unscrew pipe joints.
Date: October 25, 1921
Creator: Reeves, George G.
Item Type: Refine your search to only Patent

Pump or Motor

Description: Patent for a pump or motor that has pistons that move with or are actuated by a fluid (related to Patent 1,101,329). This pump or motor is an improved design that is more effective in transmitting power to the pistons.
Date: October 25, 1921
Creator: Reaugh, Fran
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Silo.

Description: Patent for a silo with a foundation that uses post erected in the foundation that are arranged to form an octagon.
Date: December 25, 1917
Creator: Holland, Earl R. & Henderson, George A.
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Silo-Door.

Description: Patent for a door for silos that is inexpensive and "comprises part of a ladder includes in a chute held in a position upon the silo by the door." (lines 16-18)
Date: May 25, 1920
Creator: Atkins, Thomas, B.
Item Type: Refine your search to only Patent

Signaling Device for Automobiles.

Description: Patent for turn signal device for automobiles that "can be easily and quickly attached to the frame of the usual wind shield" (lines 21-22) and allows driver to operate it without letting go of the steering wheel.
Date: June 25, 1918
Creator: Niissle, Charles J.
Item Type: Refine your search to only Patent

Shoe-Sewing-Machine Attachment.

Description: Patent for sole channel cutting for shoe sole sewing machines in which "the sole will be channeled for the insetting of the stiches, the channel being continuous and the cutting thereof is had when the show is at a standstill." (lines 15-20)
Date: May 25, 1920
Creator: Malmberg, Anders G.
Item Type: Refine your search to only Patent

Rudder-Bar for Aeroplanes.

Description: Patent for improvement in aeroplanes, especially to the steering mechanism which allows for the rudder to be locked in position so the aviator can remove their feet from the steering bar.
Date: May 25, 1920
Creator: McMullen, William H.
Item Type: Refine your search to only Patent

Rotary Drilling-Machine

Description: Patent for rotary well drilling platform improvements. The improvements are to control how the turntable moves without having to change the structure of the platform or having a second person watching while drilling.
Date: May 25, 1920
Creator: Black, Lee Jackson
Item Type: Refine your search to only Patent

Pipe-Wrench

Description: Patent for a pipe-wrench that features new and useful improvements and also extends the purposes to which the pipe-wrench may be applicable.
Date: November 25, 1919
Creator: Steen, Buford J.
Item Type: Refine your search to only Patent

Overalls.

Description: Patent for a type of overalls where the jumper is elevated from the seat. The jumper is elevated from the jumper to prevent rain and other substances from saturating the seat. The jumper can also be removed from the seat by unfastening a concealed button hole band.
Date: May 25, 1920
Creator: Godchaux, Herbert
Item Type: Refine your search to only Patent
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