Patent GB-190303551-A (GB)
Title: Machine for Closing Collapsible Tubes.
Inventor: HOLDSWORTH JAMES ELDRIDGE
Filed: 1903-02-14
Granted: 1904-01-14
Abstract: 3551. Holdsworth, J. E. Feb. 14. Bending; stamping ; making collapsable tubes or containers.-A machine for closing collapsable tubes comprises a pair of jaws for flattening and shaping the open end of the tube, a wiper or guillotine blade for bending the flattened end at right-angles, a second blade or striker for folding round the bent portion, a pair of jaws for pinching the fold so formed, and a wiper for again bending the folded part at right-angles, the latter being again folded and pinched by the striker and nipping-jaws. The successive stages are shown in Figs. 4 to 7, and 10, Fig. 1 being a side view of the machine. The tube rests in a cradle B, its open end pressing against a stop D. The end is closed as in Fig. 4 by two jaws E, E' which slide in guides on the frame I. The upper jaw E is moved downwards, against a spring e<1>, by means of a lever J pivoted at j, which is connected by rods e<2> to the jaw and is caused to vibrate by a roller j<1> on the end of a crank J<1> on the main shaft K. A cam of suitable form may also be used. The lower jaw E' is moved upwards, against a spring e<3> in time with the upper jaw, by a second bellcrank lever J<2> operated by a cam on a countershaft K<1> which turns at the same speed as the main shaft. The flat end of the tube rests on an anvil C and is bent as in Fig. 5 by a wiper F which may be a flat blunt-edged radial blade on the countershaft K<1>. The bent portion a<1> is then folded as in Fig. 6 by the striker G which consists of a blade carried by a pair of levers G' pivoted at g<1> and operated against a spring g by a lever or levers L pivoted at l. This lever is actuated by projections M, M' on a cam, and is connected to the lever G<1> by a rod l<1>. The lever L is normally held by the spring g against a stop l<2>. After the striker has folded the end of the tube, the jaws E, E<1> move apart and the cradle B moves the tube forwards to the position shown in Fig. 7. The folded part is then tightly pinched by the jaws H, H<1> which are in one with the levers N, N' and are both pivoted at h. These jaws are operated through rods n, n<1> by a lever or levers 0 pivoted at o. The lever is actuated so as to close the jaws by the cam M, and is normally constrained by a spring n<2> to hold the jaws open. A second wiper then bends the doubled part of the tube, and the striker folds it as before under the action of the second projection M' of the cam. The cradle is again advanced to bring the tube against the stop D, and the end is pinched by the jaws H to the form shown in Fig. 10, the cradle then returning to its first position. The cradle B, which is recessed to fit the cap, shoulders, and body of the tube, is mounted on a plate B' which slides in guides p on a bracket P. The cradle is caused to move at the right moments by a lever Q pivoted at q, engaging at one end by a roller q<1> with a projection r on the plate and at the other through a roller q<2> with a cam S on the shaft K'. A spring R presses the lever against the cam. A single revolution of the shafts causes all the operations to be performed ; the machine may be driven by hand, foot, or mechanical power. For tubes containing liquid, the machine is placed so as to hold the tube vertically.