Texas Patents - 6 Matching Results

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Switch.

Description: 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.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Floor Selector-Switch for Electric Door-Operating Apparatus

Description: 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
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Elevator-door-operating Apparatus

Description: 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
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Door Operating and Locking Device.

Description: 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
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Oil Substitute.

Description: Patent for an oil paint substitute consisting of furniture glue, water, soda ash, and salicylic acid, rosin, and pigment. Includes instructions for three different formulas.
Date: May 18, 1897
Creator: Reynolds, Walter James
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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