[MB095], Letter from John Hopkinson to Charles Batchelor, September 28th, 1883

Item

Abstract

Too busy since return from Switzerland to ans your letter. Sprague's tests were not made for us, but from critical point of view. Can see what is fairly the capy of hte machine. Old "L" had one strand to carry 150 lights; the [?] machine had 8 strands to carry 200 light if wires closely packed, or more if not closely packed. New "H" has 14 strands for 500 lights; at this rate the new Sprague machine would run 281 light or more if not so tightly packed. But since Sprague was here we've improved about 30% and aren't quite done yet.

Recipient

Date

1883-09-28

Decade

1880-1889

Type

Identifier

MB095

Folder Set

MB06

Title

[MB095], Letter from John Hopkinson to Charles Batchelor, September 28th, 1883

Microfilm ID

92:516

Publisher

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