Official Gazette of the United States Patent Office Volume 37, Nos. 1-4

Official Gazette of the United States Patent Office Volume 37, Nos. 1-4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1887 edition. Excerpt: ...5. The comhination, with safety-switch appliances in an electric-arc lamp, of a condoctor in continned proximity to the electric arc and' connoctod with one side of the lamp, as descrihed, wherehy on ahnormal lengthening of the arc a current will flow from one electrode to said condoctor across the space hetween them. 6. The comhination, with an electric lamp, of a condoctor placed near the arc, and a safety-shnnt or hranch-circnit closer controlled hy the actiou of the current passing across the space hetween said condnctor and a lamp-eleotrode upon the formation of an ahnormally long aro. 7. The comhination, with the movahle and fixed electrodes, of a support for a device to he carried in continned proximity to the arc, and interposed controlling mechanism interposed hetween said support and the movahle electrode, proportioned in the manner descrihed to permit the support to move at a rate corresponding to the shifting in position of the arc hy consumption of the fixed and movahle electrodee. 350,956. AUTOMATIC COMPENSATOR FOR MAGNETS. ElD30 Tromson, Lynn. Mase., assignor to the Themson-Honston Electric Company, of Connecticut Filed Ang 11, 1884. (No modeL) Claim.--1. The comhinatioo. with the feed-regnlating helix of an electric kmp, of two hranches or derivations of the main oironit containing, respectively, materials whose changes of resistance for given changes of temperature are different, and a compensating-magnet coil for assisting or opposing the action of the regnlating-helix, so as to compensate for the changes of power of the same with changes of temperacare, said compensating-ooil acting on a difference in the ratio of flow of current in the said hranches on a change of temperature affecting the same. 2. The comhination, more

Product details

  • Paperback | 394 pages
  • 189 x 246 x 21mm | 703g
  • United States
  • English
  • black & white illustrations
  • 1236986466
  • 9781236986467