Patent GB-191217598-A (GB)
Title: Improvements in the Moulding or Shaping of Dough.
Inventor: BAKER GEORGE SAMUEL
IPC: A21C3/00
Filed: 1912-07-29
Granted: 1913-08-29
Abstract: 17,598. Baker, G. S., and Baker, G. R. July 29. [Cognate Application, 29,737/12.] Dough dividing and working machines. -Dough is folded in the production of Scotch or square loaves by a sequence of movements comprising the engagement of the initial or forward portion of a dough sheet by a folding-member, the deposit of an intermediate portion of the sheet by gravity on to a support, the deposit of the final portion of the sheet also by gravity on to the intermediate portion, and finally the folding of the initial portion back on to the folded final portion. After folding, the dough is compacted by rollers and subjected to a further folding operation. Fig. 1 shows one form of machine in which a dough sheet x, gauged by rollers 1, 2, is carried forward by a reciprocating band 3 and its forward end deposited upon a roller 4 ; the roller or the band 3 then recedes and allows the middle portion of the sheet to sag on to an endless band 5 supported by a table 6. A further advancing movement is imparted to the band 3 to fold the rear end of the sheet on to the middle portion, and as the band returns the roller 4 is advanced and also rotated so as to fold the front portion over the rear portion. The band 3 passes around a driven roller 18 rotating in fixed bearings, an adjustable tensioning-roller 20, a roller 19, carried by a slide 23, and around one end of the slide. A cam-operated lever 26 reciprocates the slide 23 along guides 24 by a link 25. The roller 4 is carried by arms 39 pivoted to a slide 31, which is also reciprocated along the guides 24 by a link 32 and cam-operated lever 33. A spring 41 tends to hold the roller in a raised position so that it can move back clear of the folded dough piece, but as the slide 31 moves to the left a member 44 engages with a fixed stop 46 and turns the roller into its operative position, and it is locked by a spring catch which is released by engaging with a fixed stop when the slide has moved to the right. The roller 4 is rotated by a pinion 9 meshing with a pinion 8 engaging with a fixed rack 7. The folded dough piece is removed by the band 5. Fig. 3 shows a modified duplex machine. A web 55<a>, passing around knife-edges at the end of a reciprocating slide 56 and about fixed rollers 57, feeds the pieces of dough alternately to two hoppers 66, each dough piece passing thence through gauge rollers 50, 51 on to a reciprocating roller 53 upon which the end of the dough piece x<1> is deposited ; the roller is then moved to the left, causing a part of the dough to sag on to an endless band 85 and the end portion of the dough to fold itself on to the portion already on the band. The roller 53 is then returned and at the same time rotated to deposit the dough in a second fold. The folded dough portions are then removed by the bands 85 and carried to further sheeting rollers and subjected to a second folding action at right-angles to the first by a bar 54 working over endless bands 109. Motion is imparted to the various parts of the machine from a main shaft 78 which operates the primary gauging-rollers 50, 51 and also the secondary gauging-rollers through chain gearing 77, and also drives a ratchet mechanism 104, 105 operating the bands 85, 109. A shaft 116, geared directly to the shaft 78, operates the second folding-device 54 through cams and levers and is geared to a shaft 64 which controls the first folding device 53 by cams 95, 96, acting on arms of a lever connected to a slide carrying the rollers. The slide 56 is operated by a cam 63 on the shaft 64 acting through a link 60 and lever 59<a>, and the feed of the pieces into the two shoots 66 is regulate by pivoted flaps 65 operated by levers 67 connected by a link 68 and controlled by a link 69 and lever 70 operated by a cam 71 on a shaft 72 geared to the shaft 64. The bands 85, 109 are adjustable vertically, and the front ends of the bands 109 are carried by a reciprocating cam-operated slide so that the folded pieces of dough may be delivered at different points for subsequent treatment. To ensure correct feeding &c., the cam-shaft 72 and the disk 107 which operates the ratchet gearing 104, 105 are provided with timing-mechanism. Fig. 6 shows this mechanism applied to the cam 71 which is loosely mounted upon the shaft 72 and carries pinions 134 meshing with a gear 136 fixed to the shaft 72 and with internal teeth on a casing 137 adjustable angularly by a worm 138 and worm wheel 139, Fig. 3, operated by a hand-wheel 141.