Patent GB-190723630-A (GB)
Title: Improvements in and relating to Machines for the Manufacture of Collars, Cuffs and like Articles.
Inventor: FENWICK ALBERT DIXON
Filed: 1907-10-25
Granted: 1908-05-14
Abstract: 23,630. Fenwich, A. D., and Norwood, C. Oct. 25. Folding - instruments. - Machines for folding blanks to be made into collars and cuffs are provided with composite infolders for folding over the ends as well as the intermediate edges, and also with mechanism for giving the following movements to the templet : (1) a vertical simultaneous depression of the front half c, Fig. 6, and of each back half c<1> on to the unfolded blank ; (2) a movement to the rear after the front infolder d, Fig. 10, has turned over the lower edge of the blank ; (3) an upward movement of the front half c away from the work, together with an upward movement of the whole templet into the position shown in Fig. 10 ; (4) a forward movement indicated by the arrow 4, Fig. 11 ; (5) a depression indicated by the arrow 5 to enable the rear folder to fold the top edge of the blank ; (6) a movement in the direction of the arrow 6 away from under the folded edge ; and (7) a vertical movement away from the work. The templet sections are mounted in a cross-head frame consisting of longitudinal bars b<2>, b<5>, Fig. 5, and cross-bars b<3>, b<4> . The vertical movements are obtained by reciprocating the frame on bars b, the lower ends of which are actuated by cam mechanism on the main driving-shaft. Lateral movements are obtained by a sliding bar b<15>, Fig. 5, reciprocated by links b<16>, b<17> and a vertical splined rod b<19>, the latter having, at its lower end, a projecting arm which is also operated by a cam on the main shaft. The bar b<15> is rigidly connected to a vertical plate c', Figs. 5 and 9, which forms the backbone of the templet and slides with its ends on guides in the arms b<3>. The back halves c<1>, Fig. 6, of the templet are mounted on bars c<8> which engage in a groove in the plate c<7>. The parts c' are removed from the blank by causing them to collapse by sliding laterally over one another. This is effected by projections c<11> on each, which enter cam-slots b<23> in fixed plates b<22>, the collapsing action only taking place when the templet is moved forwards so that the projections engage the inclined parts of the slots. The front part c of the templet is mounted on a plate c<5>, Figs. 5 and 9, which is normally biassed upwards by a spring c<13> connected to the main plate c<7>. Vertical motion of the plate c<5> is governed by reciprocating in front of it a plate c<15>, Figs. 7 and 9, which has cam-surfaces c<17> to engage with pins a<14> on the plate c<5>. Other camsurfaces c<24> on the upper edge of the plate act upon spring-pressed lockiog pins c<21>, which are supported on the cross-head. The pins enter notches in each of the sliding parts c<8>, and lock the parts c' relatively to the front part c, and the parts c, c<1> relatively to the plate c<7>. The plate c<15> is reciprocated by links e<25>, c<26> and vertical splined rod c<27> from cam mechanism on the main shaft. The folding- mechanism consists of front and rear infolders, one, d, being shown in Fig. 10. The infolders are mounted on brackets d<4>, e<4>, Fig. 3, and are moved horizontally to fold the blank by cam - operated levers d<6>, e<6>. The infolders are also raised to lift the blank edges over the edge of the bed on which the blank rests, by rods g, a collar g<10> on which engages a yoke sleeve g<3>, the latter being moved vertically on the rod by cam-operated levers g<4>. The lower end of each rod has a nut g<1>, between which and the sleeve is placed a helical buffer spring surrounding the rod. Depression of a yoke sleeve by its lever pulls the rod down, together with the corresponding bracket and infolder, which presses the crease in the blank. The infolder is pressed down, as it is raised over the edge of the bed, by means of a spring g<13> mounted on the bracket, and tending to press a pin on the end of the rod g to the upper end of a vertical slot in the bracket into which the pin takes. The extreme ends of the front infolder have separate small sliding plates e<20>, Fig. 2, which are moved towards the centre of the blank to fold over the ends near the end of the action of the main front infolder e. This movement is effected by slotted arms e<23>, each mounted on a separate shaft e<24> and moved towards or away from one another by cam-blocks on arms e<25>. The arms e<25> are oscillated loosely on the shaft e<7>, Fig. 3, either independently from a separate cam, or together with the arm e<6> to which it may be locked by means of a pin. The blocks are adjustable in slots in the arms e<25> so as to vary the time in the stroke of the main-infolder at which the end templets move inwards. The corner d<20>, Fig. 2, of the rear infolder is recessed, in order to give the blank the support under the pressure of the front infolder that would otherwise be given by the rear half of the templet, this being for the time lifted off the work.