Patent GB-430051-A (GB)
Title: A machine for selecting cork discs according to size and absence of apertures
IPC: B23Q7/12
Filed: 1934-03-21
Abstract: 430,051. Separating and sorting gauges; testing physical qualities of materials. BENDER SOC. ANON., HIJOS DE H. A., San Feliu de Guixols, Gerona, Spain. March 21, 1934, No. 8938. Convention date, March 21, 1933. [Class 106 (ii)] Discs of cork &c., are conveyed from a hopper and presented in line to testing devices for diameter and porosity. The belt 2 takes discs from the hopper 1 under scraping paddles 7 which knock back discs from getting on top of one another. The discs next pass under a cylinder 8 provided with a spiral rib which ensures them passing in line between the roller 5 and a belt 21. Discs and pieces worked to the side fall into a channel 10, the bottom of which is formed by two rollers 11 provided with helicoidal ribs at the distance of the correct thickness of a disc. Discs or pieces too thick are guided sideways to a channel 13 and container 14. Those passed by rollers 11 fall on to a vibrating shoot 15 provided with holes which permit smaller pieces to fall through to container 14. At the end of the shoot 15 the discs fall on to the conveyer 2. After passing the belt 21, the discs are guided to pivoted deflecting pieces 25, 26, Fig. 6. positioned according to the diameter of the disc. Two jaws 31, Fig. 7 are pivoted at 32 to a lever 33 and are maintained raised and closed by a spring 34. By means of a screw 35 the opening between the jaws is set just slightly less than the correct diameter of the disc. On being fed through the jaws, pieces of correct or larger diameter cause the jaws to be drawn down against the influence of the spring 34 and the lever 33 is also drawn down closing the contact 36 of a solenoid 37 the armature 38 of which through a linkage 39, 40, 41 moves the pieces 25, 26 to the position shown in full lines, Fig. 6, which allows the discs to pass on to a gauging device. Pieces too small pass off by the shoot 30. Gauging device. The discs passing through the channel 29 enter hollows 45 in a wheel 44. Opposite each hollow is a plunger 47 carried by a spring-urged rod 65 guided in a wheel 46 keyed to the same shaft 55 as the wheel 44. Each hollow communicates by a duct 48 with an air pump formed by a diaphragm worked by levers 52 pulled by spring 53, the lever co-operating with a fixed cam 54. The plungers 47 are worked by spring levers 50 co-operating with a fixed cam 51. In operation, the disc enters a cavity and the plunger 47 is immediately afterwards applied. The lever 52 is next freed to allow the diaphragm to be acted upon by its spring. If the disc is non-porous, the diaphragm hardly moves, but if not the diaphragm takes up the position shown at the lower part of Fig. 6. An extension 56 on the lever co-operates with latches 61, 62 and a stop 63 on the wheel to position a shoot or channel 57 in one with a lever urged by a spring 80 to take up one of three positions over shoots 58, 59, 60 according as to whether the disc is sound, semiporous or porous. This device is also equipped with means to gauge the parallelism of the opposite faces of the disc. The plunger 47 rests solely on the point of the stem 65 and is joined to a ring 66 which by springs rests against another ring 67 fast with the shaft 65. A sleeve 68 sliding on the shaft forms part of a lever 69 which on reaching the lower position meets a spring 70 which pushes the sleeve toward the plunger. When the faces of the disc are parallel, the ring 66 remains well-centred on the shaft and allows passage of the sleeve 68, otherwise, the sleeve 68 cannot penetrate the ring and the arm meets with the part 76 fixed to the shaft 71 and by means of the arm 72 the latches 61, 62 are released and the shoot 57 directed to the defective disc shoot 60. The same mechanism tests for thickness. The lever 50 is applied by the spring 77 against a collar 74. The end 73 for discs of normal thickness passes through a groove 75 in the piece 76. For discs of abnormal thickness the end 73 meets the piece 76 and the latches are operated.