. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ame time onsome rope macliines, but separately on others and in the A description of tlierope-walk process will suffice for both. In the roj)e-walk the bobbins are mounted upon arack ; the requisite number of threads to make a strand are passed through the same num-ber of holes in a perforated plate to and through a trumpet-shaped tube, and fastened to ahook on the forming machine. This hook can be geare
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ame time onsome rope macliines, but separately on others and in the A description of tlierope-walk process will suffice for both. In the roj)e-walk the bobbins are mounted upon arack ; the requisite number of threads to make a strand are passed through the same num-ber of holes in a perforated plate to and through a trumpet-shaped tube, and fastened to ahook on the forming machine. This hook can be geared to revolve a definite number oftimes f)er each foot of travel of the former : in this way a regular amount of turn is putinto the strand. The turn varies with the size of the strand, more turn being required inthe sinall than in the large sizes. Tlie lenglli of the track limits the (ravel of the former and the length of the strand. Six strands are usually made at one time. As many strandsas are required for the rope are stretched at full length along the walk, and attached at eachend to hooks on the laying machines—the foreboard, being at one end, is stationary, and the. Fio. 8.^—Strand-forniinL machine. traveller at the other moves up and down the walk. The hooks of both machines are setrevolving, continuing the foreturn placed in the strand during the forming this step is necessary has been explained. At one of the laying machines, eachstrand is in turn removed from its hook and laid in one of three equidistant concentricgrooves of a cone-shaped block called a top, and then fastened together on the centerhfiok of the machine. The hooks of the two machines are now set revolving, the directionof turn at one end being the opposite of that at the other end. As a consequence, beingfastened at one end to one hook, and at the otlier end to three hooks, the strands turn ortwist on themselves at the end where there is one hook. As the twist is comitmnicated tothe str
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
