Improvements in or relating to box-making machines

891,138. Making boxes. BRITISH UNITED SHOE MACHINERY CO. Ltd. (United Shoe Machinery Corporation.). May 29, 1958 [June 1, 1957; July 24, 1957], Nos. 17489/57 and 23388/57. Class 18. A machine for folding up and securing the end walls of tray form boxes and lids similar to that disclosed in Specification 762,502 has fluid pressure operated means to move an abutment member into position and fluid pressure means, operated by the abutment member, for moving a presser member towards the abutment member. In one embodiment the fluid if air, in a second embodiment hydraulic fluid is used. The pressure, and the duration of the pressure to which the box end is subjected can be varied. In one embodiment Fig. 1, the end of the box is presented to a guide 28 and passes subsequently to an adhesive supplying device 30, rolls 40 which fold the end wing extension of the box, and a plough 48 which folds up the end wing. The operator moves the box on to a plate 51 where it trips a lever 72 and a solenoid operated valve admits air to a cylinder and moves the abutment member 104 into the box blank. When the member 104 moves, a cam thereon trips a switch and air enters a cylinder 100 and raises the presser member. The presser member supports the plate 51 and is carried by a piston 96 in the cylinder 100. After a predetermined time interval and at a predetermined pressure, a switch closes and the abutment and presser member are returned to their initial positions. In a second embodiment, Figs. 4 and 6, the placing of the box on a plate 216 causes one of two solenoids 330, 332 to be energized and fluid moves a piston 250 downwardly in a cylinder 252. Links 256, 266, 276 move the abutment 230 into the box and a stop 278 on the member 266 engages a member 277. Further movement of the piston 250 compresses a spring 268 in member 256 and an abutment 280 engages a rod 282 and moves a valve stem 290 to the left, Fig. 6. Fluid now flows from valve 292 to a cylinder 240 and raises the plate 216 to press the box end portions together. A micro-switch is tripped as the plate 216 moves upwards and the parts are returned to their initial positions. Specification 537,843 and U.S.A. Specifications 2,338,138 and 2,393,383 also are referred to.