Leeds & Northrup apparatus at the Louisiana Purchase Exposition 1904 (1904)
Leeds and Northrup Company · Leeds and Northrup Company · leaf 35
tin-and labor required an • it. \\ ith the Rosa cut tin- most laborious parts of the operation (setting tiie contact brush, taking, recording and reducing the readingsand plotting the curve) arc done by the machine automatically, and tinwork of several hours may be done in as many minut< sure… … d. voltage and other circumstances may be maintained more nearly tant than would be p hen tin Fo i 1111 n the curves obtained re published.The method of the cur s illustrated in \ hard rubber cylinder is wound with • layer of bare wire \ constant if-.ni the battery, con two small storage cells, p.…
Electricity · Electrical Equipment · Electric Circuits · Electronics
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