Patent GB-779541-A (GB)
Title: Improvements in sandwich-making machines
IPC: A21C15/02
Filed: 1956-01-09
Abstract: 779,541. Biscuit and like sandwich-making machines. OAKES CORPORATION, E. T. Jan. 9, 1956 [Jan. 25, 1955], No. 718/56. Class 28(1) A sandwich making machine comprises a. movable conveyer receiving sandwich elements, arranged in at least two rowsextending in the direction of movement of the conveyer, a depositing device for depositing a filling on the the first of two adjacent rows and means for lifting inverting and displacing the sandwich elements of the second row and placing them on top of the fillings to form sandwiches with the elements of the first row. The conveyer 10 is supported on rollers 11, 12 and receives successive cakes C or the like from a magazine 13 made up of a number of hoppers. A depositer 14 deposits a filling T' on all the cakes in alternate rows R<SP>2</SP> lengthwise of the conveyer and wires 14a sever the fillings from the nozzles. The rows R\ R<SP>2</SP> are moved to an inverting device 15 where the cakes in row R<SP>1</SP> are inverted and deposited on the cakes of row R<SP>2</SP> after which the sandwiches pass beneath a pressing belt 16. Device 15 comprises side plates 20; 21 slidably mounted on the rails 22, 23 of the machine frame and having, near their mid parts, downwardly extending members 24, 25 whose lower ends are secured by nuts 26, 27 on screw-shafts 28, 29 rotatably journalled in bearing boxes 30, 31 fixed to rails 22, 23. Thus plates 20, 21 are raised and lowered by turning shaft 32 with handwheel 33 to rotate shafts 28, 29. A shaft 35 connecting plates 20, 21 supports a series of elements 36, 37, 36a in contact with the upper surface of belt 10. Element 36 comprises an arm 38 with a boss 39 at one end engaging shaft 35 and a wedge member 40 at the other end projecting towards the adjacent member 37. Member 40 has inclined and horizontal surfaces 41, 42 respectively and its leading. edge 43, is chisel-like to engage beneath the leading edge of a cake C. The diverging lateral edge 44 of member 40 lifts and tilts the cake until it is vertical when it is engaged by element 37 which has a wedge member 47'to engage beneath the edge of the cake. Member 47 has an inclined surface 47a with a groove 48 to receive the edge of the cake which cake is supported on the surface 49 of member 37 after inversion. Member 36a has a shoulder 50a and a laterally directed flange 50 spaced from surface 49 to provide a slot 51. Nozzles 90, 91 adjacent the tops of elements 36, 36a direct air blasts on to the vertically disposed cakes blowing them on to surfaces 49, 50 and against shoulder 50a in a position overlaying a cake C with a topping T. Cakes C are pushed along by pushers 55 mounted on spaced parallel transverse shafts 57 rotatably carried by bushings 59, 60 joined to chains 61, 62 carried on spockets 65, 67, 68. Each shaft 57 has, at one end, a crank 71 carrying at its end a roller 72 which is moved along a cam track 73 formed in a plate 74 carried by side plate 20 and so arranged that the pushers are rocked rearwardly just before they round sprocket 67. Each pusher 55 has an arm 75 extending radially from shaft 57 and supporting, at its outer end, a plate 76 parallel to the axis of arm 75 and carrying on its leading edge a pusher element 77 shaped as shown in Fig. 4 so as to pass between elements 36, 37. A further pusher element consisting of a plate 83 is fixed to the trailing edge of plate 76 and comprises a wide upper section 83a and a narrow lower section 83b above and below plate 76 respectively. Section 83a advances the inverted cake supported on surfaces 49, 50 and tongue 83b advance the cake and filling, thus aligning the two so that the inverted cake drops on to the cake and filling. The pressing belt 16 for squeezing the assembled cakes together is mounted on a roller 113 and a rod or roller 114 and roller 113 is driven from the main drive. A blade 115 scrapes the conveyer to remove filling and the like which drops into receptacle 116. Specification 700,962 is referred to.