Handy man's workshop and laboratory . ds extending equally and in opposite directionsbeyond the ends of the strip B. Extend the wire G along thestrip B from one of its corners to the opposite corner, the wirethus being slightly oblique relatively to the strip, and extendinga couple of feet beyond one corner. Next place in position the HANDY MAN S WORKSHOP AND LABORATORY 259 strip C, which remains uncoated, centering it lengthwise in rela-tion of the other strips, and bringing its longer edges flush withthose of the strip A. Place the strip D on the strip C, leaving allmargins equally matched.
Handy man's workshop and laboratory . ds extending equally and in opposite directionsbeyond the ends of the strip B. Extend the wire G along thestrip B from one of its corners to the opposite corner, the wirethus being slightly oblique relatively to the strip, and extendinga couple of feet beyond one corner. Next place in position the HANDY MAN S WORKSHOP AND LABORATORY 259 strip C, which remains uncoated, centering it lengthwise in rela-tion of the other strips, and bringing its longer edges flush withthose of the strip A. Place the strip D on the strip C, leaving allmargins equally matched. Stretch the wire H along the strip D,from one corner to the corner opposite, the wire being slightlyoblique to the strip, so as to cross the wire G and leaving a footof the wire H projecting. Wind the projecting end (2 feet long) of the wire G tightlyaround the carbon rod F, and lay the rod squarely across theadjacent end of the strip B, so as to make good contact with thegraphite. This will leave a foot of the strip A extending from. Fig. 213—Storage battery without chemicals the rod F. Bend this extending portion back over the rod so asto cover it, and then, using the rod F as a spool, roll it along,pressing it down hard; and thus wind tightly upon it all of thestrips and both of the wires, so as to form a hard roll havinggenerally the appearance of a solid white cylinder. Stretch twoor three rubber bands around the roll, so as to hold all of itsparts rigidly in position. Find the projecting end of the wire H,and leave it exposed. Set the roll into the jar, so that the exposedportion of the wire H and also a portion of the carbon rod Fextend upwardly. Now fill the jar with water, preferably sub-merging the roll to within half an inch of its top. This completes the battery. In some instances it may be im- 26o HANDY MANS WORKSHOP AND LABORATORY proved by making the strips A C of cloth thicker than abovedesignated. The battery may be charged from an ordinary dry cell, byconnec
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
