. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . t instead ofbeing continuous it is divided, and the ad-juster h applied between the parts. This ad-juster is shown as a lever upon a fulcrum, 7c,and moved by a set-screw, I, so that the endof the lever makes a full contact between theends of the bars e, as shown by full lines, oronly a partial contact, as illustrated by dot-ted lines in Fig. 2; and hence the power of theelectro-magnet will be varied according to theposition of the adjuster. The same effect isproduced in the modification illustrated inFig. 3, the bar
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . t instead ofbeing continuous it is divided, and the ad-juster h applied between the parts. This ad-juster is shown as a lever upon a fulcrum, 7c,and moved by a set-screw, I, so that the endof the lever makes a full contact between theends of the bars e, as shown by full lines, oronly a partial contact, as illustrated by dot-ted lines in Fig. 2; and hence the power of theelectro-magnet will be varied according to theposition of the adjuster. The same effect isproduced in the modification illustrated inFig. 3, the bars e e being hinged to the coresand adjusted more or less into contact witheach other by the screw I. I claim as my invention— The adjustable connection applied at therear end of an electro-magnet, between thecores thereof, to vary the power of such elec-tro-magnet, substantially as set forth. Signed by me this 8th dav of May, A. T. A. EDISON. Witnesses: Geo. T. Pinckney,Chas. H. Smith. T. Circuits for 135,531. A. Telegraphs. Patented Feb. 4,
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
