Patent GB-573379-A (GB)
Title: Improvements in or relating to machines adapted for applying reinforcements to articles
IPC: A43D43/06
Filed: 1943-08-17
Abstract: 573,379. Affixing adhesive tape. BRITISH UNITED SHOE MACHINERY CO. Ltd. (United Shoe Machinery Corporation). Aug. 17, 1943, No. 13333. [Class 73] A machine for applying reinforcing tape adhesively to articles of sheet material in particular to shoe upper parts, comprises means for positioning the article in a convenient manner, means for feeding the tape into position beneath the article and cutting off a variable length, said means being designed to prevent deformation of the tape during cutting-off and during successive strokes of the feeding device, and yielding means for pressing the complete severed length of tape against the article. As shown for applying an adhesive reinforcing tape to a vamp throat, the machine comprises a casing 20 having a downwardly-inclined forward part 10 to serve as a work support. The work is positioned by one of two gauges 186, 188 over an opening 18 in the support 10. Above the opening is a pressure abutment 160 and below it is the strip-applying mechanism 16 with which is associated tapefeeding mechanism 12. In .operation, a vamp V, Fig. 11, is positioned against one of the gauges 186, 188, one of these being suitable for a vamp of the Oxford type and the other for a Derby type, and a one-revolution clutch is tripped. A length of tape is then fed by the mechanism 12 on to the pressure plate 126 of the mechanism 16 and the latter rises, first to clamp and then to cut off a length of tape, and finally to press the tape against the under side of the vamp. The pressure abutment 160 is a transparent block adjustable in a forked holder 165 pivoted to a bracket 170 which is adjustable transversely of the work support. The block is held downwardly yieldingly by a spring 177 and adjusting nut 182. The holder 165 is adjustable angularly for varying thicknesses of work. The tape feeding means include a tape reel rotatable on a spindle 28 in a bracket 26 against an adjustable friction imposed by a disc 30 and spring 32. The tape passes to the feeding mechanism 12 by way of a drag roll 34 which prevents irregular unwinding when sticky tape is used, and with which are associated guide means 40 for ensuring that the tape is properly located with respect to the work.' The mechanism 12 comprises a plate 44 to which the tape is gripped by a spring-held arm 46. The plate 44 is carried by a bar 48 adapted to be reciprocated by a cam lever 64. The latter has an adjustable pivot so that the extent of feed can be varied.. When a tape length has been fed on to the plate 126 of the applying mechanism 16, the latter is raised by a cam lever 146. The first' result of this is to clamp the tape between a shear block 106 fixed at the side of the opening 18 and a spring-pressed slide 108 on the mechanism 16. Further rise of the latter first causes the plate 126, in co-operation with the block 106, to cut off the tape length, and then presses the tape against the work which has been positioned over the opening 18. The mechanism 16 is steadied during its movements by a roll 136. In order to disengage a sticky tape positively from the block 106 before the succeeding feeding stroke of the feeding mechanism, the latter does most of its withdrawing movement while the end of the tape is still gripped by the members 106, 108 and the arm 46 is held away from the plate 44, the arm re-engaging the tape on the plate only near the end of the withdrawing movement and after the slide 108 has moved away from the block 106.