Patent GB-292463-A (GB)
Title: Improvements in machines for applying reinforcements to bags or the like
IPC: B31B50/00
Filed: 1928-05-17
Abstract: 292,463. Daisy Products, Inc., (Assignees of Plass, R. H.). June 18, 1927, [Convention date]. Hand and like bags.-Relates to a machine for inserting cardboard or other reinforcing strips between the bodies and linings of hand hat bags, boxes, and the like. A frame 10, Fig. 3, carries a tubular support 11 at one end of which is mounted a stationary head 13 in the centre of which is fixed a, pivot shaft 15 on the other end of which is a head 17, similar to the counterpart of head 13. The heads are preferably of cylindrical form and constitute a mandrel over which the bag &c. to be operated upon is placed. The heads have at their edges guide-ways 24, 24<a> opening towards the centre of the mandrel and adapted to receive the strip of reinforcing material. Each head has formed in it a gap 25, Figs. 2, 5, opposite to which there extends from the guide-ways a guide-nose 26 composed of four metal blades spaced in pairs. A shaft 31, which may be driven from a motor through suitable gearing, carries at the inner end a pinion 38 meshing with a gear-wheel 39 loose on shaft 15 and fixed to a ratchet wheel 40. An arm 42 mounted loosely on shaft 15 by means of a sleeve 41 can be given a sweeping motion around the shaft between the two heads, the arm carrying a pawl 43 the toe of which is spring-urged to engage the teeth of the ratchet wheel- 40. The outer end of the arm carries fixed and movable gripping jaws 47, 48, held closed by an expansion spring. The operation consists in inserting the forward end of the reinforcing strip 46 of cardboard &c., held in place within the guide-nose 26 projecting from the guide-ways, into a transverse slit 56, 57, formed in the lining 55 of a bag 53, the rear end of the strip being held between the jaws 47, 48 of the arm 42. The motor being started, shaft 31, pinion 38 and gear 39 cause the ratchet wheel 40 to be driven in the direction of the arrow, Fig. 5, and the ratchet wheel being in constant engagement with the pawl 3, this causes continuous turning of the arm 42 and effects the pushing of the stiffening strip through the guide-nose into its place within the bag. The following means are provided for stopping the arm 42 and disengaging the strip from the jaws when sufficient has been fed. A crosspiece 58 attached to the heads constitutes a. forward stop for the arm and bears on the heelmember 50 of the jaw 48 comprising the spring and opening the jaws. A shoulder 60 on the pawl 43 also engages a release pin 59 in the head 13 disengaging the toe of the pawl from the ratchet wheel 40. The rear end of the pawl has a notch 61 into which snaps the bent end 62 of a plate spring 63 fixed to the arm 42; the spring maintains the pawl disengaged from the ratchet wheel until the arm is moved back by hand to the starting position, when a back stop 64 engages the toe of the pawl and causes it to re-engage the ratchet, at the same time releasing the plate spring 63 from the notch. A series of holes 65 may be provided for different positioning of the back-stop. The heads are preferably provided with two or more sets of holes for the reception of the support 11, 66, 67, Fig. 3, for enabling larger and smaller bags to be accommodated and 68, 69, to enable the head 17 to be attached to the support when the machine is required to be operated in the reverse direction.