GB191029725A - Improvements in Automatic Recording Apparatus for Sawing and similar Machines. - Google Patents

Abstract

29,725. Johanson, G. E. Dec. 24, 1909, [Convention date]. Indicating time of working and output of machines. - The recording-drum of the apparatus, which is actuated directly by the deals &c. passing through a sawing-machine, is driven at a rate dependent upon the width of the deals and the feed-speed; the drum may thus be made to revolve at a rate corresponding to the actual units of work done by the machine, which may be recorded in monetary units, or at a rate dependent upon the scale of wages paid, which may differ for different classes of work. A second recording - drum is provided, which is also actuated by the deals and rotates uniformly, no matter what the feed-speed may be; this drum records the output of the machine is a percentage of the maximum theoretical output. One of the rollers which are engaged by the deals in their passage through the machine is divided into three sections 1, 2, 3, Fig. 2, of which the lowest one 1 only is actuated by the deals of least width, and which consequently have the highest feed-speed; deals of a width greater than this engage the lower two sections 1, 2, and so on. The sections are loosely mounted and actuate a shaft 11 through spur and pawl-and-ratchet gearing of increasing velocity-ratios, so that when, e.g., all the three sections are actuated, the highest one 3 alone drives the shaft 11 through the pawl-and-ratchet gearing 12, 15, the other pawls 12 slipping over the teeth of their ratchet-wheels 14, 13 respectively. The shaft 11 drives a worm-shaft 23 through the variable gearing 16, 17 ... 21 shown, the wheels 19 to 21 of which are mounted on a sleeve 22. This sleeve is positioned through a lever 24 by the device for changing the feedspeed, so that one of the wheels 16 ... 18 is engaged with one of the wheels 19 ... 21, and drives a record-strip mounted on a drum 28 through the worm-wheel 26. As shown in Fig. 3, a second drum or strip 33, for recording the percentage output, may be similarly actuated through variable gearing positioned by the device for changing the feed-speed, and in a modification, not shown, the sections 1, 2, 3 of the driving-roller are adapted to move transversely so as to adapt themselves to the different thicknesses of the deals &c. passing through the machine.