Improvements in or relating to timing apparatus applicable for use with glass feeding devices and for other purposes

  • Inventors:
  • Assignees: John Thomas Wood
  • Publication Date: March 05, 1925
  • Publication Number: GB-229804-A

Abstract

229,804. Wood, J. T. Dec. 28, 1923. Charging.-Relates to a timing device, partioularly intended for use with a glass - feeding device but applicable also for other purposes, such as the automatic working of a furnace - charging machine, for adjusting the various operations of such machine relatively to one another while the machine is in motion. The device comprises a number of shafts parallel with one another and having one or more cams mounted thereon, cylindrical castings adjustably mounted in the framework of the machine and carrying air valves or electrical contact makers, the castings and their valves being separately movable for retarding or advancing the operations of the machine. In the construction shown, two parallel shafts 5, 6 are journaled in bearings in uprights 2, 2<x> and long conical pulleys 7, 8 are mounted in the shafts, the inclination of the cones being in opposite directions. A sprocket wheel 10, secured to one end of the shaft 6, is connected by an endless chain to a suitable source of power for driving the device, and a belt 17 drives the pulley 7 from the pulley 8. The upright 2 is formed with circular apertures, coaxial with the shafts 5, 6, in which cylindrical castings 29, 31 fit. The fastenings are secured in place by nuts 34, 35 respectively, and by slackening these nuts the castings may be turned about their axes. Thus valves or contact makers carried by the castings can be adjusted in relation to cams which are housed within the castings and are fixed on the ends of the shafts 5, 6. The casting 29 carries an electrical contact-maker 108 operated by a plunger 120, and also a cam 105 which is formed on a sleeve 12 looselv mounted on the end of the shaft 6. The sleeve is driven from the shaft 5 through sprocket wheels 11, 14 and a chain 16. Thus by turning the casting about its axis, the timing of the operation controlled by the cam, e.g. the operation of the shears of a glass feeder, can be adjusted. Similarly, the casting 31 carries a valve 53 which controls a supply of compressed air and is operated by a cam 48. This cam, which is of variable contour, is keyed on the shaft 5 and may be moved laterally by a handwheel 44 projecting from the end of the casting. The wheel 44 enables the cam to be shafted in order to bring any desired portion of its contour in line with the operating piston 58 of the valve. The speed of the cam as a whole is varied by moving the belt 17 along the pulleys 7, 8.

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