AN OPERATIVE JOURNAL, CONDUCTED BY WORKMEN. VOL. I.— No. 6. CHICAGO, MARCH, 1884. teems (f B. CO TTRELL & CO. Printing Press Manufacturers. … With our IMPROVED AIR-SPRING we obtain a rate of speed at least ONE-THIRD EASTER than is possible in a press using the wire spring. The value of this invention, together with our .PATENT DELIVERY GEARED SLIDERS AND OTHER IMPROVEMENTS, is no longer disputed by competitors. WE DESIRE TO CALL THE…
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