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Car-Door Operating and Locking Device
Patent for a car door operating and locking device that provides improved means for automatically closing and locking the doors before starting the car.
Date:
May 18, 1915
Creator:
Pitts, Hood
System:
The Portal to Texas History
Door Operating and Locking Device.
Patent for an electric door or gate operating and locking device that allows for automatically opening and closing a door or gate and locking it when it is open or closed. This device may be turned off if necessary to allow for manually moving the door or gate and may be installed cheaply in preexisting structures.
Date:
May 18, 1915
Creator:
Pitts, Hood
System:
The Portal to Texas History
Elevator-door-operating Apparatus
Patent for an electrically controlled means of automatically "opening and closing the doors of the elevator shaft" without slamming or banging the doors, including illustrations.
Date:
May 18, 1915
Creator:
Pitts, Hood
System:
The Portal to Texas History
Floor Selector-Switch for Electric Door-Operating Apparatus
Patent for floor selector switch for electric door operating apparatus situated at the floor/landing near the elevator shaft to close and open the elevator gate/door. It also allows the elevator operator to use a switch to operate the elevator gate/door, and also lock the gate/door so it cannot be opened by accident. All said to work quickly and quietly.
Date:
May 18, 1915
Creator:
Pitts, Hood
System:
The Portal to Texas History
Stock Food and Method of Preparing the Same
Patent for a new method to produce stock feed at a low cost, by "treating finely divided organic matter containing cellulose with certain acids under pressure, thereby freeing the cellulose and other carbohydrates," to make the feed more easily absorbable by animals (lines 13-23).
Date:
May 25, 1915
Creator:
Walker, Thomas Bailey
System:
The Portal to Texas History
Switch.
Patent for a switch for electrically operated elevator doors or gates that ensures their proper closing before the car travels through the shaft.
Date:
May 18, 1915
Creator:
Pitts, Hood & Covert, Frank M.
System:
The Portal to Texas History
Vehicle.
Patent for a vehicle that is "designed particularly for travel through the water but adapted through the peculiarity of its construction for travel with practically equal facility on the land." (p. 1, lines 9-12), including illustrations.
Date:
May 4, 1915
Creator:
Ramsey, Frank T.
System:
The Portal to Texas History