Patent GB-265573-A (GB)
Title: Improvements in sheet-folding machines
IPC: B65H45/14
Filed: 1927-01-22
Abstract: 265,573. Spiess, G. Feb. 4, 1926, [Convention date]. Folding paper. - A cross-folding machine employing folders of the type comprising a stop plate and associated rollers, is arranged so that the third fold can be made in either direction, that as a " book " fold or as a " newspaper " fold. Where a fourth folder is used, similar provision is made whereby an alternative fourth fold is obtained. To this end the third folder 72 - - 75, Fig. 1, is provided with an additional roller 77 and a deflector 76, and by interchanging the positions of the deflector 76 and the stop plate 74, the fold can be reversed. Alternatively, another stop-plate may be used in place of the deflector 76, and one or other of the stop-plates rendered inoperative by a deflector in the usual way. In the machine shown in Fig. 1. which can be used for giving a series of parallel folds or for cross-folding, the sheets are fed over a table 2, being registered against a side guide by inclined rollers 3 and fed by rollers 60, 61 into the stop plate 62, with the same edge engaging the stop 8 and the side guide as were used for registering the sheet during printing. For cross-folding, the sheet passes from the first folder 60 - - 63 along a guide 64 into the grip of inclined rollers 65 which feed the sheet at rightangles to its former path into a folder 68 where it receives its first cross-fold. It issues from this folder along a guide 70 to inclined rollers 71 which feed it into the third folder 72 - - 77 arranged as described above so as to give the desired fold and then deliver the sheet to a receiving band 78. When it is desired to give a sheet a series of parallel folds, the guide 64 is replaced by a deflector such as 83, and the sheet passes through the parallel folders 81 - - 90 to a receiving band 92. In the machine shown in Figs. 6 and 7. which may be employed for giving three or four folds at right-angles to one another, or for making the first two folds parallel folds, the sheets are fed over a table 2 and registered against a side guide 4 as before, and pass through a guide 7 to the first folder 8 - - 12. A second parallel fold may be given by a folder 13, or the sheet may be fed by means of deflectors 14, 16 and rollers 15, 17 to a guide 21, where it is gripped by inclined rollers 22 and fed at rightangles into a folder 26, the guide 21 in this case being disposed above the feed-table 2 in contrast to the arrangement of the guide 64 and table 2, as shown in Fig. 1. From the folder 26 the sheet issues on to a guide 29, where inclined rollers 30 feed it into the third folder 32 - - 37 arranged similarly to the third folder 72 - - 77, Fig. 1, so as to give alternative folds. A guide 38 and inclined rollers 39 feed the sheet to the fourth folder 41 - - 44, Fig. 9, from which the sheet is delivered by a guide 45, Fig. 6, to a collecting band 46. The fourth folder is modified to obtain an alternative fold, by providing additional rollers 47, 48. Fig. 9, and deflectors 49, 50. so that by interchanging the stop plate 43 and the deflector 49 the fold may be changed. A guide 51 delivers the sheet to the board 46. Deflectors may be arranged with the third folder 32 - - 37, so that where only three folds are required, the sheet is delivered direct therefrom to the band 46. The fourth folder may be arranged so as to swing out of the way of the sheet for the same purpose, in the manner described in Specification 248,313. The cross-folders may be arranged on the opposite side of the table to that shown in Fig. 7, and so as to give the same folds as before, by moving the guide 4 to the opposite. side of the table and inserting a deflector in the top plate 11 so that the first fold is made by the stop-plate 13.