Patent GB-201125-A (GB)
Title: Improvements in folding machines for applying binding to the edge of flexible material
IPC: A43D8/40
Filed: 1922-12-04
Abstract: 201,125. Muther, L., and Glines, F. S. July 24, 1922, [Convention date]. Folding edges of sheet material.-A machine for applying a binding tape to the edge oi flexible material such as uppers of boots and shoes, stated in the Specification as open to inspection under Sect. 91 (3) (a), but not in the Specification as accepted, to be applicable to folding the edges of flexible material, comprises mechanism for feeding the material intermittently, stationary mechanism for straightening out the tape or the edge and for folding it over, mechanism for pressing it down on to the material, and preferably also a guide for the edge. Straightening-mechanism. The material is guided by hand on to a work support 50, Fig. 1, and over a thin plate 53 with its edge 54 bent over the bevelled edge 51 of the support 50. A sharp turned-up edge 55 on the plate 53 is arranged at an angle to the direction of feed and stretches the tape from left to right away from the edge of the material as it enters the machine. Feed-mechanism. The material is fed forward step-by-step by a feed-bar 20 co-operating with an idler roll 21 and moved forward to feed the material, and then raised, moved back and lowered on to the material as in known folding machines. The bar 20 is mounted in a housing 22 moved backwards and forwards from an oscillating shaft, and is moved up and down in the housing 22 by a link oscillated from a shaft 19 and having a forked end in which a projecting collar 27 on the bar 20 rests. The bar 20 is pressed down on to the material by a spring 30 until it is raised by the link. When the pressing mechanism 60 is raised to its inoperative position, the bar 20 is similarly raised, a projection on the mechanism 60 engaging a shoulder 90 on the bar 20. Turning-mechanism. The straightened tape is turned up and over the edge of the material by a plough 58, Figs. 1 and 9, having a turning edge 59 of the form used in known folding machines. Pressing-mechanism. The turned-over edge of the tape is pressed down on to the material and the material is held during the backward movement of the feed-bar 20 by a presser-bar 60. Figs. 1 and 5, operating on the material when the bar 20 is raised. The bar 60 is integral with, or attached by a pin 67 to, an operating lever 65 pivoted on the frame of the machine at 66 and urged to press the bar 60 towards the material by a spring 80 co-operating with an adjustable hollow screw 81 on the frame. An arm 77 on the shaft 19 operates through a spring in an adjustable screw 72 to raise the lever during the forward movement of the feed-bar 20. The bar 60 carries an L-shaped extension 62 undercut at 63 and partly surrounding the plough 58 so that the machine can deal with curved edges of small radii and so that the tape is pressed down immediately on leaving the plough 58. Guiding-mechanism. A guide 36 abuts against the edge of the material before the operation of the plough 58. An adjustable collar 47 on the guide 36 is pressed downwards by a spring 43 against a collar 38 on the guide support 39. The guide 36 may be raised by a handle 44 on the collar 47 and retained in the raised position by engagement of the collar 47 with a recess 46 in the support 39. When the presser-bar 60 is raised, for instance before the introduction of the material to the machine, the guide 36, as well as the feed-bar 20, is raised, an extension 86 on the bar 60 engaging a collar on the guide 36.