Patent GB-355695-A (GB)
Title: Improvements in bread slicing machines
IPC: B26D7/06
Filed: 1930-04-22
Abstract: 355,695. Bread-slicing machines. TEWES, A. B., 3516, North Florissant Avenue, St. Louis, Missouri, U.S.A. April 22, 1930, No. 12461. [Class 5 (i).] In a bread-slicing machine comprising a conveyer for feeding the loaves to the slicing mechanism, the conveyer projects forwardly of the main frame, and an oscillatory member is provided for successively delivering the loaves one by one from the conveyer to a feed plate at a lower level. Loaves are fed on to a conveyer A from which an oscillatory member B delivers them to a feed table 8 whence a reciprocating plunger C feeds each loaf successively through a slicing mechanism D to a delivery table E. The conveyer A supported on the sub-frame 10, 11 of the main frame 1, comprises two pairs of rails 13 between each pair of which run sprocket chains 20 carrying conveyer flights 21 and passing over sprockets 16, 19 on head and tail shafts, the flights 21 passing through a grid 22 forming part of a conveyer discharge plate 7, the rear end of which is upwardly inclined. Rails 13 are carried on transverse members supported on angle bars 10, 11 forming the sub-frame and turned upwardly and downwardly respectively, the former having attached thereto a vertical member 24, loaves being fed from the side with the downturned edge and against the member 24. Above the plate 7 and the rear end of the conveyer, walls 25 are mounted. The member B is pivoted at 29, and comprises a pair of walls 28, with wing portions 60 which in the loaf-receiving position of member B project beyond the end of the walls 25 ; the lower edges of the walls 28 rest on top of the plunger C the reciprocations of which cause oscillation of the member B. On each wall is mounted an angle member 30 with its rear end bent inwards. Resilient fingers 54 adjustably mounted on the knife frame guides, press on the loaf in member B to prevent too rapid a fall on to the feed table 8. The plunger C comprises two corresponding sets of fingers 38, 38<1> to pass between the knives, the latter being fixed to a member 36 and the former to a bar 37 depending lugs of which are fitted on adjusting screws on the member 36, the whole plunger running on guide rods 32 passing through lugs on the plunger and operated by a link 39 and connecting bar 40. The slicing mechanism D comprises two interfitting sets of wave-edged knives mounted in frames 65 sliding in guides 62 and actuated by piston rods 87. Resilient stripper means comprise fingers 73 carried by spring-controlled rods 74 moving in collars 75, 76. The feed table 8 is of grid formation, the knives passing therethrough. The delivery table E has adjustable walls 80 with resilient forwardly-extending wings 84. The driving mechanism comprises an electric motor 50 controlled by switch 51 and suitably geared to shafts 49, 47 of which the latter drives the conveyer by means of the sprocket chain 105, and also carries a face cam 46 in a cam groove on which works a roller 44 on the arm 43 connected to the shaft 41 carried in bearings 42 and driving the connecting bar 40. The shaft 49 is connected to a shaft 93 by connecting means 97. The shaft 93 has two crank throws 180‹ apart each being connected by rods 91 to a piston 86 in a cylinder 85, which piston is connected to the piston rod 87. The piston gear is oil immersed, the oil being retained by stuffing boxes 88, cap 95, oil-proof rings 96, 98, a check valve 99 and pipe 100 connecting the cylinder to the crank case. Crumb receptacles 107 are placed beneath the knives.