[D8337ZDL], Letter from Charles Batchelor to Thomas Alva Edison, August 7th, 1883

Item

Abstract

I[Hard to read] New dynamos: in ordinary Z machines, get 60 ft/lbs per sq in of cutting surface. Looks like he doesn't dare to try more without using blower. Did I understand right from your letter to EHJ about output of H mach? Discusses one of his new machines (120 lights). "I must have your opinion on the value of Hopkinsons's improvements. He is continually at Bailey about them." Bailey writes from London about Hop's K machine that gives 600 lights. "Pray the alterations of the length of magnet is not patentable and H cannot claim anything on it & therefore it is useless to make a contract for a thing that is given to all." I'm making K with slightly larger armature to get 400 amps. Lamps received; "magnificent." Got your bill for arc light; is it Moses's arc light? He was supposed to send for free.

Date

1883-08-07

Decade

1880-1889

Type

Identifier

D8337ZDL

Folder Set

D8337

Title

[D8337ZDL], Letter from Charles Batchelor to Thomas Alva Edison, August 7th, 1883

Microfilm ID

67:832

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University