Patent GB-430359-A (GB)
Title: Improvements in machines for filling and capping cartons
IPC: B65B7/28
Filed: 1933-12-19
Abstract: 430,359. Filling and capping cartons. WOOD, D., Hillside, Wigton, Cumberland. Dec. 19, 1933, No. 35726. [Class 125 (ii)]. [See also Group XVIII] In a machine for filling and capping cartons, more particularly cartons of frusto-conical shape having the mouth-end formed with an internal shoulder to receive a sealing - disc, as described in Specification 400,353, filled cartons are raised from a revolving table by supporting plungers operated by a stationary cam surface into engagement with capping - mechanism comprising a number of disc-inserting and sealing-devices mounted upon a revolving head and actuated by overhead stationary cam surfaces, the cartons being initially raised to receive the discs and then lowered slightly for the completion of the sealing. As shown in Fig. 1 the machine comprises two revolving tables, a, b respectively provided with automatic means for filling the cartons with measured quantities of liquid and with automatic means for inserting and securing sealing- discs, transfer devices d, e, f, being arranged to feed empty cartons to the filling-table a, to transfer the filled cartons to the sealing-table b, and to deliver the filled and sealed cortons. The cartons drop into recesses in the tables and are raised therefrom, by spring-controlled plungers operated by cam tracks during the rotation of the tables, so as to be presented to filling and sealing means carried by revolving heads arranged above the tables. The capping-mechanism comprise casings carried by a revolving head b<3>, Fig. 3, stationary cam tracks b<4>, b<5> being arranged to operate plungers to effect the feeding of closure discs and the sealing. The filled carton is initially raised into contact with a guide bush l<4>, Fig. 6, and engaged by spring-controlled jaws l<5>, and, while in this position, a closure disc is fed from a stack n and pushed into the mouth of the carton by a slide n<1> and plunger o operated by the cam-track b<4>. The carton is then lowered clear of the bush l<4>, and a ring p is lowered by a plunger operated by the camtrack b<5> so that the jaws l<5> are forced inwards and, by reason of the toggle mounting me, beading rollers m7 on a rotating drum m are brought over the rim of the carton to seal the disc. Electric heating-elements q serve to heat the rollers m' and facilitate the sealing by effecting the softening of the wax with which the paper is impregnated. In the Provisional Specification the transfer-devices and the filling-apparatus are described. The transfer-devices comprise star wheels co-operating with guide walls d<1>, e<1>, f and are geared together with the tables a, b. The filling-head carries measuring chambers k<3>, Fig. 4, fed from a tank a<4> through a spring-controlled slide valve. k<2> which is engaged by the head of the carton and raised to the position shown in dotted lines so that the supply port is closed and a measured quantity delivered to the carton through the nozzle k<7>. Suitable ports in the chamber and the valve, and a vent pipe k<6> are provided for the inflow and outflow of air during the emptying and filling of the chamber k<3>.