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in subjects: "Business, Economics and Finance - Transportation - Trolleys"  
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Trolley-Pole Head.

Description: Patent for improvements in trolley-pole heads in which a good contact may established at all time between the wheel and the trolley-wire. Illustration is included.
Date: May 17, 1904
Creator: Dunn, Robert I. E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Trolley Wire Finder

Description: Patent for a trolley wire finder. This invention to improvements in trolley-wire finders, and more particularly to its attachment to trolley-poles and trolley-harps as a means of assistance in guiding the trolley wheel has been shifted from or slipped off said trolley-wire and is of advantage as a means of saving time." (8-16). Illustration included.
Date: March 8, 1904
Creator: Barnhusrt, William
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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