Patent GB-191108263-A (GB)
Title: Improvements in or relating to Apparatus for Covering Boxes or other Articles.
Inventor: NASMITH JOHN WILLIAM
IPC: B31B1/60
Filed: 1911-04-03
Granted: 1912-05-03
Abstract: 8263. Nasmith, J. W. April 3. [Cognate Applications, 8633/11, 10,079/11, and 17,860/11.] Coating webs.- Machines for covering boxes &c. are provided with a device consisting of a roller C, Fig. 1, carried by pivoted arms C<10>, by means of which, when the end of the covering-band is pulled, the roller C is raised and the glueing-roller B is positively rotated. One of the arms C<10> is provided with a setscrew C<5> resting against the arm J<4> of a lever J<3>, J<4> mounted on a shaft co-axial with the shaft of the glueing-roller, or on the shaft of the glueing-roller. When the band A is pulled forwards, the roller C is raised and a spring J<5> acts to turn the shaft j, until a disk J carried on a shaft J<2> mounted in the end of the arm J<3> contacts, with a milled flange H<2> of a constantly driven disk H<2>. The shaft J<2> also carries a pinion always engaging a pinion on the shaft of the roller B, and consequently this is'rotated. The disk H<2> is driven from a disk H by means of an intermediate disk H<1> carried from a rod m adapted to slide in bearings m<1>. The box spindle N is driven in the usual way from the main shaft G, and the position of the disk H<1> is adjusted, until the length of paper delivered by the glueing-roller B for each rotation of the spindle N corresponds to the sum of the lengths of the sides of the box to be covered. When oblong boxes are being covered, the speed of the roller B is varied from a maximum to a minimum twice during a revolution of the box. This is effected by a rod N<7> connecting the sliding rod m to a stud N', adjustably secured to a member N<4> carried by a pinion N<3>, which rotates at twice the speed of the box spindle. When the machine is stopped, the arms C<1> may be raised into the position shown in dotted lines by a handle C<4>, and retained by a notch C<4Î> engaging a pin M<2>, the band A being thus removed by a rod C<3> from the roller B in order to prevent it from adhering. The spring J<5> then acts to cause the disk J to contact with the flange H<2> and drive the roller B constantly, to prevent the glue on it from hardening. The quantity of glue on the roller is regulated by an adjustable stripper wheel E. In apparatus for simultaneously glueing a main band A and border bands A<Î>, Fig. 5, a secondary glueing- roller B<Î>, geared to the main roller B, is provided. The border bands are so arranged on the roller B<Î> that, when all the bands are drawn together under a guide-roller D<2>, they have the required amount of overlap without adjustment by guides or the like. A bandlifting device C<Î> is provided for the roller B<Î>, and is connected to the device C, C<10> by a link R with a slot R<1> engaging a pin b<Î>. The device C<Î> has an extension C<15> acting as a stop. According to Provisional Specification 8263/11, the glueing - roller is rotated frictionally by means of the covering-band, and the roller C serves as a compensating-roller to form a loop in the band and enable the glueing-roller to be put in motion gradually.