. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . ch contacts. I do not claim herein a lamp provided with5 a base entirely of insulating plastic materialmolded directly upon it* neck, as such subject-matter will form the subject of a separate ap-plication for a I claim is— io 1. The method of making the bases for andattaching the same to incandescing electriclamps, and attaching the exterior contacts tothe base, consisting in placing the lamp andcontacts connected to the respective terminals 15 of the incandescent conductor in a mold and then filling th
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . ch contacts. I do not claim herein a lamp provided with5 a base entirely of insulating plastic materialmolded directly upon it* neck, as such subject-matter will form the subject of a separate ap-plication for a I claim is— io 1. The method of making the bases for andattaching the same to incandescing electriclamps, and attaching the exterior contacts tothe base, consisting in placing the lamp andcontacts connected to the respective terminals 15 of the incandescent conductor in a mold and then filling the mold with plastic materialaround the neck of the lamp and within thecontacts, whereby the entire base is formed ofsuch plastic material, substantially as set forth. 2. The mold having seats for the contact- 20rings, in combination with a holder for retain-ing the lamp in its proper position in the mold,substantially as and for the purpose set forth. This specification signed and witnessed this20th day of May, 1SS1. THOS. A. EDISON. Witnesses: Kichd. N. Dyer,H. W. United States Patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW JERSEY, ASSIGNOR TO THEEDISON ELECTRIC LIGHT COMPANY, OF NEW YORK, N. Y. MAGNETO OR DYNAMO ELECTRIC MACHINE. SPECIFICATION forming part of Letters Patent No. 251,550, dated December 27, 1881. Application filed March 3, 1881. (No model.) To all whom it may concern: Be it known that I, Thomas A. Edison, ofMenlo Park, in the county of Middlesex andState of New Jersey, have invented a new and5 useful Improvement in Faradic or Magneto orDynamo Electric Machines; and I do herebydeclare that the following is a full and exactdescription of the same, reference being hadto the accompanying drawing, and to the let- io ters of reference marked thereon. The object of this invention is to furnish anarrangement of means whereby the field-of-force magnets of a number of Faradic machinesmay be readily and con trollably energized. To 15 this end, in a derived
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