Specification of William Thomas Henley and David George Foster - Telegraphs and Time-Keepers - No. 12,236

Catalogue no: 1050
Dewey No: Subject(s): Patents
Author(s): David George Foster, William Thomas Henley
Total pages: 8 Illustrations: 3 fold out Language(s): English Publication date: 1848
Editor: Publisher: The Great Seal Patent Office
Dimensions: 290mm x 200mm Condition: Blue paper cover separated and torn in half, very frayed and fragile
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Relates to; "Certain Improvements in Telegraphic Communication and in Apparatus connected therewith Parts of which Improvements may be also applied to the moving of other Machines and Machinery". The patent describes eight innovations. Although most have some application to electrical horology, only two are specifically directed to it; 1. "We claim the application of currecnts of magneto electricity to regulate the motion of time-keepers --- insofar as regards the obtaining of the currents from the inductive action of permanent magnets and coils of insulated wire without the aid of soft iron". 2. "We claim the application to the regulating of time-keepers of currents of electricity (whether magneto or voltaic) transmitted from a primary or standard clock by the improved apparatuses and instruments and by the peculiar modes --- in so far as regards the alternate transmission of the current in opposite directions and the different mechanical arrangements whereby that is effected". Reprint of 1884
Room location: Library Cabinet: Q Shelf: 4
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