28 Matching Results

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Improvement in Chairs. (open access)

Improvement in Chairs.

Patent for improvement in chairs, which provides adjustable shoulder supports and back (inclination and height), with intended advantages of better lung capacity and spinal alignment. The chair can be adjusted to fit all sizes of bodies. It is noted that some of the adjustable features could be incorporated into other furnishings such as beds or lounges. An additional feature of the chair is a retracting spring to assist the user in exiting the chair.
Date: May 9, 1876
Creator: Barnes, James W.
System: The Portal to Texas History
Improvement in Car-Trucks. (open access)

Improvement in Car-Trucks.

Patent for the improvement of car-trucks, consisting in the arrangement of each wheel of a car-truck upon the outer end of a separate short axle, the bearings of each axle being both located on the inner side of the wheel and the bearing at the inner end of the axle provided with a sliding-box and springs. It includes a description and illustration.
Date: July 9, 1872
Creator: Onley, Joseph
System: The Portal to Texas History
Improvement In Car-Seat Locks. (open access)

Improvement In Car-Seat Locks.

This patent is for the usage of car seats and how they perform. It was created to improve the mechanics of locking a reversible car-seat.
Date: April 9, 1878
Creator: Waddill, Abel K.
System: The Portal to Texas History
Improvement in Rotary Engines. (open access)

Improvement in Rotary Engines.

Patent for improvements in valves used in rotary engines.
Date: May 9, 1871
Creator: Hughes, Robert
System: The Portal to Texas History