. Railway master mechanic . NEW RIG FOR COPYING WAY-BILLS. In the other apparatus, shown by Fig. 2, the recordis obtained upon a disc instead of a cylinder, and thisdisc has a regular movement imparted to it by clock-work instead of being moved intermittently at eachoscillation of the spring. It consists, as will he seen,of a lever L connected at one end to one of the lead-ing spring boxes, and at the other giving motion toa marking style ( which presses against the var-nished zinc disc D, this disk being mounted on ashaft which is driven by clockwork. A piece of india-rubber coiled on the sha
. Railway master mechanic . NEW RIG FOR COPYING WAY-BILLS. In the other apparatus, shown by Fig. 2, the recordis obtained upon a disc instead of a cylinder, and thisdisc has a regular movement imparted to it by clock-work instead of being moved intermittently at eachoscillation of the spring. It consists, as will he seen,of a lever L connected at one end to one of the lead-ing spring boxes, and at the other giving motion toa marking style ( which presses against the var-nished zinc disc D, this disk being mounted on ashaft which is driven by clockwork. A piece of india-rubber coiled on the shaft of the disc with a slighttension compensates for the slight variations of re-sistance to which the clockwork is subjected in con-sequence of the friction of the style (. Another styles, actuated by hand from the footplate, serves tomark the passing of the kilometer posts. The form of record produced by these two devicesis shown in fac ^inii ^ nnner record is from
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Keywords: ., bookcentury1800, bookdecade1870, bookidr, booksubjectrailroadcars
