23 Matching Results

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in subjects: "switches"  
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Electric Switch

Description: Patent is for electric switch that minimizes other phone interference and limits each call to a single caller on the line. Two lines can be connected to the switch.
Date: December 4, 1917
Creator: Teare, J. W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch.

Description: Patent for a switch mechanism for use on railroads. The switch can be installed without cutting the railroad tracks. Instructions and illustrations are included.
Date: March 20, 1917
Creator: Allen, Gus V.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch-Stand.

Description: Patent for a switch stand that automatically switches to danger when unlocked and has independently rotating switch operating spindles and target spindles.
Date: October 19, 1915
Creator: Praetorius, Richard P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch Attachment.

Description: Patent for a switch attachment that consists of a derailing guard, a side track rail, an adjustable shoe that pivots next to the rail, a vertical groove in the end of the shoe, and a swinging free arm.
Date: April 3, 1894
Creator: Warren, Governor D. & Casey, James
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Mechanism for Operating Railway-Switches.

Description: Patent for a device "for automatically operating the switches of steam, electric, and street railways by the movement of a locomotive or car, thereby obviating the necessity of a brakeman, driver, motorman, or other person alighting from the car or train for such purpose" (lines 12-18).
Date: July 2, 1895
Creator: Moore, Albert R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch.

Description: Patent for a switch for trolley lines that can be triggered from inside the trolley car.
Date: December 12, 1911
Creator: Torrence, Otis M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Speed-Indicator.

Description: Patent for a speed-indicator to be used on trolly-cars and other vehicles that informs anyone looking behind the trolly-car if that car is speeding or not. An alarm goes off when the car goes above a predetermined speed, which is activated by a governor that is controlled from the wheels. A device keeps the signal normal.
Date: July 7, 1896
Creator: Bateman, Talbot Owens
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railroad-Gate.

Description: Patent for improvements in automatic railway and farm gates by using a combination and arrangement of two supporting-frames, two sliding gates, a diagonal rod to secure the gates; with three levers each having its own functions, and two friction rollers. Illustration is included.
Date: May 12, 1891
Creator: Wood, Horace Overall & Smith, Sanford Sanders
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railroad Switch.

Description: Patent for a new and improved railroad switch. This design "consists in securing the short switch-rail to a long guard-rail, instead of pivoting it to the end of the sliding-rail or supporting-plate, the said guard-rail having the end remote from the short switch-rail spiked securely to the track, and the end carrying the switch-rail provided with lever or other moving devices whereby the switch-rails are thrown" (lines 21-29).
Date: January 15, 1884
Creator: Crowley, John H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railroad-Crossing.

Description: Patent for a railroad crossing that "consists in certain devices organized in a manner to secure automatic alignment of a series of movable rail-sections with the main rails of a track on which a train is traveling in the direction of the crossing, the approach of the train setting in motion the devices by which the rail-sections are controlled, and thus dispensing with an attendant at the crossing to set the contrivance for the safe passage of the train through the crossing" (lines 12-22).
Date: October 11, 1892
Creator: Knight, Mosses G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railroad-Crossing.

Description: Patent for a simple and durable railroad-crossing that "consists of a center piece, and two side pieces for clamping the main track rails in place" (lines 12-14). It can be easily set up and connected with the rails.
Date: December 26, 1893
Creator: Keenan, Michael J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railroad-Switch.

Description: Patent for a pressure triggered railroad switch that attaches more easily to the tracks and automatically closes when the pressure of the railroad cars is taken off of it.
Date: March 12, 1907
Creator: Madeley, George E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electric Switch.

Description: Patent for an electric switch meant for the Edison three-wire system. It provides "means whereby the translating devices on either side of the middle wire may be supplied with electricity to the exclusion of those on the opposite side, the return-current from said translating devices being transmitted by way of the middle wire" (lines 11-16).
Date: November 12, 1895
Creator: Mottram, William T. M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railway-Switch.

Description: Patent for an improved railway switch that "may be operated by a passing car or train, and one which will be most effectual and certain in its operation and which will at the same time automatically adjust a signal at one side of the track which will indicate to the next approaching train the position of the switch" (lines 18-24).
Date: June 27, 1893
Creator: Johnson, Samuel Joseph
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch Operating Mechanism for Electric Railways.

Description: Patent for a switch-operating mechanism for electric railways that uses a movable display band to control movement through an electrically operated switch. The arrival of the railway car or street car at a point adjacent to the switch automatically throws the switch to automatically shunt the car from one line to another without a motorman or switchman's intervention.
Date: May 25, 1915
Creator: Craig, Richard M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch-Stand

Description: Patent for a switch stand with a switch signal light to indicate whether a railroad switch is open or closed.
Date: November 12, 1912
Creator: Phillips, Smith F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Combined Railway-Switch and Car-Replacing Mechanism.

Description: Patent for a combined railway-switch and car-replacing mechanism that is meant to "provide certain improved devices which can be arranged to operate as a switch mechanism, or as car replacing means, which can be easily manipulated, are of a simple construction and which will effectively serve for their intended purposes" (lines 11-16). It can be easily assembled and dissembled.
Date: November 27, 1894
Creator: Debose, Albert S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Switch.

Description: Patent for a multiple point switch that may be connected to a standard light socket.
Date: November 19, 1918
Creator: Kilmer, Edward J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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