Patent GB-261581-A (GB)
Title: Improvements in or relating to machines for manufacturing crown-corks or the like
IPC: B21D51/46
Filed: 1925-01-25
Abstract: 261,581. Aktieselskabet Dansk Pressefabrik, and Skov, H. A. Jan. 25, 1926. Stoppers, making. - In a machine for making crown corks, means are provided for conveying the shells thereof in two or more rows side by side, step by step longitudinally through the machine past either a transverse device for cutting paper discs and inserting them into the shells, or a device for permitting adhesive to dribble down into the shells and past a transverse device for feeding cork discs from a container and inserting them in the shell to a point of delivery from the machine, the devices operating synchronously with the step by step conveying means. The assembled crown corks ' may be passed through pressing table and over an inspection table. The shells of crown corks ' are fed from a hopper 4, Fig. 1, mounted on a standard 3, Fig. 3, on the table 1 of the machine, down two or more parallel guideways 6 where their hollow faces are engaged by toothed wheels 7 driven from the main shaft 2 of the machine, the wheels moving them from a vertical part thereof to a horizontal part along which they are transferred through the machine step by step by rack bars 8 operated by cranks 9 driven by the shaft 2. Disposed across the guideway is apparatus for cutting discs from a. strip of paper impregnated with adhesive and inserting them in the shells. A cam 135, Fig. 5, on the shaft 2 operates, through a rod 35 and lever 34, a plunger 33 carrying two stamps 36 placed in staggered relation as shown at a, b, in Fig. 3. The paper strip is fed intermittently from a roll 11 over a feed roller 28 to a waste strip roll 12 by ratchet and pawl devices 23, 25 and 24. 26 on the roller 28 and roll 12 respectively, the latter being connected to the roll through a friction device which allows for its alteration in size during the operation of the machine. Rods 21, 22 connect the pawl levers 23, 24 to the arms 17, 18 of a lever secured on an axle 15 which carries loosely a lever 16 rocked by a cam 13 on the shaft 2 and secured at its outer end to the lever 17 through a rod 19 and spring 20. If a shell is missing from either guideway 6 beneath the dies 36. a spring pressed rod 39 rises through the guideway and. acting through arms 40, 41 and pivots 42, 44, raises one or other of arms 43, 46. Figs. 3 and 5, which cause a hook 50 on the arm 17 to engage a plate 52 and, by stopping the return of the pawls to their operative position. to stop the advance of the paper strip, the spring 20 allowing the lever 16 to move idlv. When the plunger 33 is raised a stop 48 on the rod 35 releases the hook and the movement of the strip is resumed. In place of the paper strip, adhesive may be applied directly to the shells from a reservoir replacing the plunger 33, the reservoir having two valves operated bv contact of the stems with the shells. The shells pass beneath a heater 53, Fig. 1, which melts the adhesive to apparatus for inserting cork discs in the shells. The discs are stored in two hoppers 54, Fig. 8, each provided with an agitator 57 and a rotating sheave having apertures 58 for passing the discs to a second rotary sheave 59 by which they are transferred to tubes 60. A reciprocating pushing member 62 at the foot of the tubes pushes the lowermost disc from each tube to a position over the guideways 6 where a plunger 63, continuously reciprocated by a cam 155 on the shaft 2, presses them into the shells. The pushing member 62 is driven through suitable linkwork by a shaft 85 which also operates a stamp 61 for pressing the discs down the tube 60 and a counting device. If a shell is missing from one or both guideways, upward movement of spring pressed rods 65 causes the disengagement of a clutch in the shaft which connects the shaft 85 with the main shaft 2, and the pushing member 62, stamp 61 and counting device cease to operate. The crown corks ' are passed out of the machine by a travelling inspection belt but this may be replaced by a pressing device comprising two rotating tables 128, Fig. 13, provided with pockets 129 into which the crown corks ' are fed by spring-controlled arms 135 pivoted on the rack bars 8 and operated by fixed rollers 138. Spring urged pressers 131, on the rotating tables 128, compress the cork discs in their shells, a cam 141 raising them to an inoperative position at the points where the crown corks' are fed to and from the tables. A fixed guide 142 passes them from the tables on to an inspection belt 139 disposed between bars 120, one of which is extended to form a table 147 beneath which is disposed a rotary inspection table 149. The crown corks ' pass around the end roller 145 of the belt 139 under the guidance of a member 152 and are deposited with their tops uppermost, on the table 149 from which they are swept by an arm 154 secured to the table 147.