Patent GB-227540-A (GB)
Title: An improved case nailing machine
IPC: B27F7/02
Filed: 1923-10-22
Abstract: 227,540. Jackson, J. Oct. 22, 1923. Machines for making boxes. A case nailing machine includes means for simultaneously feeding and driving in predetermined positions a plurality of nails, adjustable means for holding the work, and an attachment for cleating the case parts and clinching the nails. The machine illustrated includes a main frame 1, 2 and a bearer bar 3 adjustably supporting carrier plates 6 on which work holders 7 are adjustable. The latter engage the interior corners of the case, and comprise standards 10 supporting two spring-pressed buffers 12 arranged at right-angles. The exterior of the transverse case members B bears against buffers 18 on frames 20, which support nail holders 17 adapted to bear against the case members A. The nail-holders comprise a series of trays 17 vertically adjustable in the frames 20 and shaped to support nails horizontally in a groove. The frames 20 are adjustable on base members 29, which are themselves adjustable in slots 33 in the frame members 2. The nails are driven simultaneously by punches 34, Fig. 3, vertically adjustable in holders 35. The latter are adjustable along a bar 41, which has brackets 46 adjustable on pedestals 49 mounted upon reciprocating carriers 50 slidable in guides 51 on the framing 1. Mounted in each carrier 50 is a pin 52 connected bv a link 56 to a shaft 57 mounted in bearings 58 vertically slidable in guides 59. The shaft 57 is reciprocated vertically in order to reciprocate the punches 34 horizontally, by the engagement of rollers 60 on the shaft 57 with cams 61 on a shaft 62 driven from a pulley shaft 66. The rollers 60 and cams 61 are held in constant frictional engagement by a loose metal strap. Nails are supplied from hoppers 27, to slots in shoots 88. The hoppers are pivoted on brackets 78 and tilted, bv the reciprocation of the carriers 50, through linkage 82, 84, 86. The shoots 88 deliver nails to shoots 90 leading to the nail holders 17. Cut off plates 94 are reciprocated between the ends of the shoots 90 and nail holders 17 by pin-and-slot linkage connected to the punch holders 35. In operation, the parts are adjusted to suit the size of the case and the nails are then delivered and driven. Cleating and clinching devices adapted to take the place of the work holders 7, in order to cleat the case members B before assembly, comprise vertically disposed castings 104, adjustable on the carrier plates 6. In each casting on opposite sides are guides 111 accommodatisg vertically-reciprocable slides 112, each having lugs 113 the lower sides of which are chamfered. Distance bars 115 on each side of the slides 112 have lugs 116, the upper sides of which are chamfered. A vertical clinching plate 120 is secured to lugs 122 on each slide 112 between the bars 115. The slides 112 are reciprocated vertically through linkage 123, 127, 128 bv an eccentric 129 on the cam-shaft 62. The lugs 113, 116 are in engagement whilst nails are driven and then the slides 112 move upwardly, allowing the distance pieces 115 to retire so that the clinching plates 120 as they rise with the slides can clinch and inlay the nails. Specification 21013/19, [Class 89 (iii), Nailing &c.], is referred to.