Patent GB-341854-A (GB)
Title: Improvements in machines for depositing coatings of various kinds of soft plastic confections
IPC: A21C15/00
Filed: 1929-10-18
Abstract: 341,854. Coating cakes &c. with icing &c. SALERNO, F. G., 1029, West Harrison Street, Chicago, U.S.A. Oct. 18, 1929, No. 31747. [Class 28 (i).] In apparatus for depositing coatings on cakes, wafers and the like, the conveyer web 1 is supported by a table 2 which is pivotally supported at one end and is moved vertically at the other end by a link 81 associated with cam means described below. The vertical movements may be varied in amplitude to vary the form of the coating on the goods, the coating material being dropped from a series of concentric nozzles 30, 31. The cam means comprise a cam 92, having steps a, b, c, adjustably secured to a shaft 93. The shaft 55 carries arms 82, 88 the arms 88 being angularly adjustable therein by a screw 84 carrying a hand-wheel 84a. The arms 88 are joined by a rod 89 having grooves which receive the set screw 91 of the hub of a roller 90 which is thus adjustable to engage either of the cam faces a, b, c to vary the amplitude of the table 2. The belt 1 moves intermittently and is synchronized with the movements of the table 2 which are preferably regulated so that the table always rises to the same upper position but falls to varying extents. If desired, the table may be retained in its upper position during the working of the machine, by screws 96. Two coating materials are used in the apparatus shown, icing being contained in a compartment 17 and jelly in a compartment 16 divided therefrom by a partition 23. The icing is discharged through the inner passages 31 of the concentric nozzles and the jelly through the outer passages 2. Rotary valves 28, 29 are arranged to place the nozzle passages in communication with their respective compartments and then to shut them off from the compartments whils t the coating material is forced out by plungers 26, 27. The valves 28, 29 have their ends formed as pinions and each engage a rack which is reciprocated through linkage by cams on the shaft 32. The plungers 26, 27 are also reciprocated by cams on the shaft 32, the linkage including pivoted members 42, 60 which are slotted to accommodate pivot blocks 42a, 60a which are adjusted by screw means to vary the stroke of the plungers and consequently the quantities deposited. The form of the deposit may be varied by altering the relative timing of the icing valve and plunger and the jelly valve and plunger, thereby altering the timing of the deposits. To enable this to be effected, the cams 59, 68 for actuating the jelly depositing valve and plunger are carried on a sleeve 33 which is angularly adjustable on the shaft 32, the sleeve having a flange 73 which is toothed to engage a pinion 75 on a radial shaft journalled in a frame 74 secured to the shaft 32. The pinion 75 is connected through gearing 77 to a worm wheel 78 which is meshed with a worm on a shaft 80 co-axial with but independent of the shaft 32, and journalled in the frame 74. A handle is provided to rotate the shaft 80 which, by rotating the pinion 75, angularly adjusts the sleeve 32. The adjustment may be effected whilst the machine is running and slip of the adjusting means is prevented by the irreversible worm gearing. The goods are aligned on and moved over the web 1 by a frame consisting of side bars 4 and cross bars 5 having V-notches in their leading edges. The frame is slidably mounted in a lifting frame 6 which is carried on bell cranks 7, 8 pivoted to the table 2. The bell cranks 7, 8 are connected by rods 9 and are actuated through linkage from a cam on the shaft 93, so that the frame 6 has a rising and falling motion synchronized with the intermittent movement of the web 1. When the web is moving the frame also moves but at a greater speed so that the goods are moved over the web. The frame carries a V- shaped pivoted member 13 which rests always on the web and effects the first movement of the goods over the web. The aligning frame is reciprocated in the frame 6 by a pivoted member 12 connected with the aligning frame by a link 11 and pivoted to a rocking block 113.