SE337225B - - Google Patents

Abstract

1,113,107. Coating apparatus. POLYTYPE A.G. 21 May, 1965 [15 June, 1964], No. 21693/65. Heading B2L. [Also in Division B6] In a machine for printing on or coating with paint or otherwise treating e.g. tubular objects 11 carried by spindles 5 . . . 10 on an intermittently moving rotary carrier 4, a sensing device 12 is provided at a station in advance of the treatment position, and if an object is absent at that station causes a signal which is stored until that station reaches the treatment position whereupon the signal causes operation of mechanism for stopping or rendering inoperative the treating apparatus. As shown, a cylinder I causes sectors 2, 3 for printing on the objects 11. At each step forward of the carrier 4, a cam 13, Fig. 3, coupled to the carrier 4 closes contacts 14 whereby relays 16 cause a stepping switch 18 to move forward one step at each step forward of the carrier 4. If absence of an object is detected by the device 12 on, as shown, spindle 7, contacts are closed to send a signal to the switches 18, which when the object reaches the printing position, and a cam 19 on cylinder 1 closes a contact 20, causes relays 28 to be actuated to operate a device 21 stopping the cylinder 1 or moving the sectors 2, 3, to an inoperative position. At the same time a signal is sent to a restoring relay 17 to render that relay inoperative. If objects are present on spindles 8, 9 &c. following the spindle 7, then during further movement of the carrier 4, another cam 22 coupled to the carrier closes contacts 23 which through the relays 17, 28 actuate the device 21 to render the printing apparatus operative again.