Patent GB-332378-A (GB)
Title: Automatic cup pastry making machine
IPC: A21B5/02
Filed: 1929-06-28
Abstract: 332,378. Batten, J. June 28, 1929. Making wafer biscuits.-In a machine for making cup pastries, male and female moulds are mounted in the form of a wheel, rotating on a horizontal axis, and are heated by stationary burners which are arranged both inside and outside the upper segment of the wheel, which is enclosed in an oven hood. As shown in Figs. 1 and 3, the wheel consists of spokes 20 bolted to the flange of a hub 16 secured to a hollow shaft 9 journaled in bearings 8 in frames 1, 2. A rod 10 passes through the shaft 9 and spaces the frames 1, 2. The moulds project horizontally from the spokes, the wheel thus formed having an open side at the front which renders the moulds accessible. The inner and outer burner pipes 132 are clamped in headers 131 supplied from the pipe 130. In operation, the wheel rotates anti-clockwise, as seen in Fig. 1, i.e. clockwise as seen by an attendant standing at the open side of the wheel on the left of Fig. 3. The female half-moulds and the cores are clamped together during baking, and as they approach the discharge position the core carrying bars are unlocked, lifted about three-quarters of an inch and again lowered to facilitate the discharge of the wafer, the female moulds are cracked and the wafer is discharged over a check plate through a shoot to a trimming mechanism. The cores are then lifted over the batter supply means, which charges the re-closed female moulds, and the cores are again lowered in position. Between the charging position and the commencement of the baking, the cores are delayed in their descent and are then acted upon by teetering cams 159, 163, which raise the cores slightly and again depress them, the escape of steam being thus facilitated. The teetering cams have adjustable cam faces 161, 169, and the upper cam is pivoted at 161 to the frame and is pressed down by a spring at its lower end. The cores and the female moulds are acted upon by final squeeze cams 171 before being locked for the baking operation. The baking is effected in a hood having sides and top formed of detachable asbestos sections, the top sections being shaped to accommodate an uptake controlled by a pivoted disc valve. Figs. 7 and 9 combined on the line A-B show a wheel spoke 20 and the moulds associated therewith. Mould supports 27, having recesses 34, 35 to engage rods 53 on which the female mould halves slide, are bolted to the spokes 20 so that the female moulds are carried between adjacent spokes and are readily detachable by lilting the moulds to the dotted position shown in Fig. 7, thus disengaging the rods 53 from the recesses 34, 35. The supports 27 have roller track segments 38 secured thereto to support the open side of the wheel. The moulds are locked in position by screws 58, Fig. 14, on a member 55 which bridges the supports 27 at the open side of the wheel and carries a roller 60 which serves to lock the core bar at that side as described below. The mould halves are connected by links 68, 69 to a lever 66 having end rollers 67 which engage cams positioned for cracking and joining the mould halves. The cores are supported on core bars, each of which is pivoted at 76, Fig. 7, to a member 77 slidable on an auxiliary spoke 49. The screw and nut arrangement 80, 81, 82 allows only sufficient pivoting of the core bar to ensure that the cores accommodate themselves within the moulds. The slide 77 is connected to a rod 84 which is locked or freed by a bell-crank 92, Fig. 9, actuated by a cam, either to lock the core bar at the closed side of the wheel during baking, or to permit the cores to be raised for discharge of the wafers and charging the moulds. At the open side, the lever 105 carried by the core bar has rollers 104, 106 actuated by cams, either to jam the arm 107 under the roller 60 or to release it for withdrawal of the cores. The slides 77 and the cores therewith are actuated by cams engaging a roller 86, Fig. 7, whilst the core bars are actuated at the open side by cams engaging rollers 101. Safety tracks 144 are arranged at the upper part of the machine to engage the rollers 86, 101 in case of breakage and prevent the cores from falling out of the moulds and damaging the machine. Safety cams engage core bars which accidentally remain unlocked. The wheel is rotated by a pinion engaging with a toothed ring 43, Figs. 1 and 7, whilst the latter feed is preferably from an oscilating squirt which follows the moulds during charging and returns to the next row of moulds.