[D8227F], Letter from Charles Lorenzo Clarke to Thomas Alva Edison, May 18th, 1882


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[D8227F], Letter from Charles Lorenzo Clarke to Thomas Alva Edison, May 18th, 1882

Editor's Notes

"Your telegram is at hand. The 250 light machine is, in my opinion, all that could be desired. There was no cross in the armature." After long running field coil "was hardly warm." "I think it safe for Dean to go ahead." Wrought iron rails used for dynamo base are too light; resulted in "much complaint" from Iso Co. Clarke called Dean's attention to this but nothing done yet. Shld use cast iron instead. "Dean has no Z cores on hand with which he can try the experiment which you suggest." Will try w/ 4" cores on hand; Dean says he'll be ready on Monday. Asks if Stewart in S. Amer will want "standard batteries, high resistance shunts, galvanometer, bridge &c with the rest of his plant" when he could use a photometer for regulation. TAE marginalia here: "OK Think photometer OK if he is properly cautioned about clean globes" When "central stations are established of sufficient magnitude to require meters," shld send "a young man" knowledgable about them as part of the plant. TAE marginalia: "I think it absolutely necessary that young man should be sent who will understand & take charge of the meters." Gives wiring sketch to "overcome the difficulty in respect to dispensing with safety-catches in sockets and fixtures." TAE marginalia: "Think this OK" The complaints from the Isolated Co. on account of safety-catches in fixtures are loud. I think we should do away with them." xxxConsider for selection; dh 16jan03xxx




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