Patent GB-999295-A (GB)
Title: Improvements in and relating to the manufacture of containers
IPC: B31B17/00
Filed: 1962-03-26
Abstract: 999,295. Making tubular containers. OWENS-ILLINOIS GLASS CO. March 26, 1962 [March 24, 1961 (2)], No. 11371/62. Heading B5D. [Also in Divisions B8 and F2] A paperboard container comprising a sleeve-like body S has an end portion bent inwardly to overlie an end panel P and is secured thereto in liquid-tight manner by an annular series of radial undulations; a tape T may additionally secure the bottom and the bent-over side wall or alternatively an adhesive may be used instead of the tape. The tape may be of fabric or a pressure sensitive tape or may be a paper tape with a water actuated quicksetting adhesive on one side. A heater may be provided to keep the adhesive wetting agent at the correct temperature. The undulations are formed by a toothed roller 112 having teeth of greater depth at one end. The container may have a water resistant coating. Container supporting means.-A sleeve S is supported on one of two mandrels M (Fig. 5) mounted on a swing bar 19 to move from a loading to an operative position in which one end of the container is beneath the roller 112. Drive means.-The apparatus is driven by a motor D which, through a speed reducer and a clutch rotates the roller 112 and thereby the container. A cam-shaft 198 is also driven from the motor and carries a cam 200 which controls movement of the roller 112 and the container towards each other, a cam 201 actuating the clutch and a brake, cams 202, 203 controlling tape feed and cut-off means respectively, and a cam 204 which operates a microswitch in circuit with the drive motor. Operation.-A manually operated switch starts the motor thereby causing the cam-shaft to rotate. Cam 204 operates the microswitch energizing the motor for the rest of the forming cycle. Cam 200 causes rails 118 carrying the forming roller 112 to be lowered and a linkage 161, 51, 48 to be moved on one of the mandrels to a vertical position beneath the roller 112. Rolls 178 and 181 (Fig. 7) bend over the edge of the sleeve S. Tape T fed during the previous cycle is pressed by rolls 170 and 171 against the sleeve. Wax is applied to the tape as a lubricant and the tape may be scored longitudinally to stiffen it against buckling. A brush 82 may apply a wetting agent to the adhesive on the tape. When the rails reach their lowest position, the roller 112 is in contact with the end panel P and the sleeve S. Cam 201 moves an arm 209 (Fig. 25) upward so that a bumper 211 moves a lever 143 upwardly whereby a clutch is engaged and a brake released. Engagement of the clutch causes the roller 112 to rotate and form the undulations in the sleeve, panel and tape (if provided). A block of wax or paraffin bears resiliently against the roller 112 acting as a lubricant. After severing and application of the tape (i.e. one revolution of the sleeve) and additional 1¢ revolutions are made to secure the tape properly. At the end of the cycle the rails 118 begin to move upwardly, the brake is applied and the clutch is disengaged and a length of tape is fed forward in readiness for the next cycle. Finally the microswitch opens to complete the cycle and the operator depresses a pedal to allow the mandrels to be changed round.