Canadian Jewellers Association · Toronto : Maclean-Hunter Pub. Co · leaf 668
er action relates to the giving ofthe impulse to the balance by the action of the escape wheelupon the impulse roller. To draw this action, Fig. 34, we will teeth, therefore the distance between the points of two adjacentteeth will be T. of the circumference of the wheel, or 3600,which is 240. With… … t. d - 1 B x I ,; suppose that we have a certain centre-distance, or distant ebetween the pivot holes of the balance staff and the est apewheel, and want to know the proper sizes for a wheel and animpulse roller for that centre distance, hirst, measure thecentre distance very carefully, either with…
Jewelry · Jewelry trade
Internet Archive · Thomas Fisher Rare Book Library · Public Domain Mark 1.0. Free to use for anything.
