(s!/'x>-' [Entered at the Post Office of New York, N. T„ as Second Class Matter, ropyrl^hted, 1890, by Mnnn & Co.] A WEEKLY JOURNAL OF PRACTICAL LWORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY. AND MANUFACTURES. NEW YORK, MAY 8, 1890. Vol. L-XIL-No. 18.] $3.00 A 1C£AR. {: Established 1845. J Weekly. … handles. On the rear end of each rack and working a pinion. The rig. 1.-AUTOMATIC SWITCH-OPERATING MECHANISM. spindle is a quadrant with locking partial section is shown in the up- detent, worked electrically. The per left hand corner of the cut, in upper row of handles operates the switchers ; the…
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