Patent GB-798936-A (GB)
Title: Improvements in or relating to fastener assorting apparatus
IPC: B07C5/12
Filed: 1956-01-13
Abstract: 798,936. Fastener supply apparatus. BRITISH UNITED SHOE MACHINERY CO., Ltd., MAKOVSKI, S. A., and QUARMBY, R. C. Jan. 11, 1957 [Jan. 13, 1956] No. 1188/56. Class 89(2) In an apparatus for suplying fasteners, e.g. nails, to a machine for attaching heels to shoes, the raceways are moved to and fro lengthwise thereof by a dynamically unbalanced rotary mass carried by a rotary shaft mounted to move to and fro with the raceways. In Fig. 1 the raceways 8 are mounted on a carrier 7 which is supported at the front and rear from the lower ends of leaf spring 5, 11 the upper ends of which are connected to the machine frame 1. A pair of rotary shafts 13, 15 arranged one directly over the other in the carrier 7 are each provided with an unbalanced rotary mass 17. The shafts 13, 15 are coupled together by means of pinion 19 and the lower shaft 15 carries a pulley 21 through which the shafts are driven by a belt 23. The unbalanced rotating masses 17 vibrate the carrier in the lengthwise direction of the raceways whilst the forces in the transverse direction produced by the two masses 17 cancel each other out. Means are provided to frictionally damp out vibration of excessive amplitude, while permitting free vibration of the carrier 7 below a predetermined amplitude. From the upper portion 53 of the raceways the nails pass through gaps 47 between the raceways and a balancing bar 49 which functions to cause those nails travelling with their point leading to be reversed so that they continue travelling with their heads leading. The balancing bar is adjusted towards or away from the upper portion 53 of the raceways by a hand wheel 63 on a shaft 61 formed with teeth engaging a rack 57 on the bar 49. After leaving the upper portions 53 of the raceways the nails pass down the lower portion thereof to an inverting roll 51 which they enter head first, the roll being thereafter rotated to deliver the nail head downwards, for example into tubes 157. A nail stop bar 133 on front of the roll 51 is adjustable by means of a 'hand wheel 141 on the shaft 139 having teeth engaging rocks on the upper sides of the ends of the bar 133. Movement of the nails along the lower parts of the raceways during rotation of the roll 51 is prevented by spring fingers 67 carried by a rotatable shaft 69 mounted in blocks 71 adjustable lengthwise of the raceways by rack and pinion means operated by a hand wheel 81. A rod 113, which may be connected to a power actuated member or to a manually operable lever or to a treadle, is coupled by a linkage to the roll 51 and shaft 69 so that its downward movement rotates the roll 51 and the shaft 69, to deliver nails to the tubes 157 and to cause the spring fingers 67 to engage the nails on the raceways. The roll 51 is transversely adjustable and is readily removable to facilitate its replacement by a different roll. If nails having a point and a bevelled face at each end are used, the bar 133 is provided with a series of recesses 145, Fig. 5, one for each raceway, each having a side face 147 which orients the nails so that the bevelled faces of the leading nails and also the nails which follow, are caused to be in vertical planes, thereby minimising the tendency of nails to rise one over the other. Specification 665,035 is referred to.