Patent GB-190801249-A (GB)
Title: Improvements in and relating to Automatic Box Making Machines.
Inventor: PARKER GEORGE DAVID
Filed: 1908-01-18
Granted: 1908-06-25
Abstract: 1249. Parker, G. D. Jan. 18. Nailing.-A machine for making nailed wooden boxes comprises mechanism for feeding the box parts and also nailing-mechanism. The power shaft 3, Figs. 1 and 2, having bearings in a frame 1, is driven from a pulley 4 through a clutch operated by a lever 6, and operates through gearing a shaft 7, which in turn operates a shaft 10. The shaft 7 reciprocates the nailing-head 2, to which nails are furnished by devices E of known type. The transverse box pieces 29, Fig. 2, are pushed edgeways upon the upper members 33<b>, 33<d> of an elevator, shown separately in Fig. 3, which slides on the frame and raises them to position upon yielding nailing-bases, where they receive the side pieces. The base of the elevator normally rests on cross-bars 1<d> on the frame, and in the rear is a shelf 29<a> provided with shoots for the transverse box pieces 29 and with mechanism which is operated from eccentrics on the shaft 10 and pushes the pieces into the elevator. A spring plate 35 moving in guides rests against each member 33<b>, and these plates coact with guide-plates 34 above the normal position of the elevator. Vertical slotted plates 36<a>, Figs. 3 and 4, carry blocks 76 having adjustable guided pins 76<a>, which carry spring-supported stops 79. The nailing bases or anvils 36 are mounted on pintles supported from the blocks 76, and are pressed against plates 34 by springs. When the elevator rises, the pieces 29 pass between disks 21 mounted on arms 24 secured on the cross-rod 25. The arms are connected in two sets by bars 26, 27 and the disks are moved towards each other by mechanism operated by a cam 20 on the shaft 10. The side pieces are placed in a shoot comprising facing-members 43, each having a loose bottom carried by a bar 47 sliding in guides, the bottom being grooved to receive an arm 45 having mounted on it two side-piece clamps consisting of two sets of spring-actuated pivoted fingers 62, Fig. 8, for grasping boards of different widths. The arms are moved by eccentrics 12, and the spring fingers swing down on meeting the lowest side piece in the hopper and pass beneath until the spring throws the offset 102 into engagement with the rear side of the boards, thus throwing the lower side piece of the pile aside. The pile of boards descends by gravity, and the bottom board again comes into position for withdrawal. A hinged spring-controlled gate 75, Fig. 1, prevents the delivery of two boards at a time and resists the delivery of a board of abnormal thickness. The springs 78 supporting the nailing-bases resist ordinary nailing pressure, yielding only when the nailing-head meets the wood, and the base also by the aid of spring fingers accurately adjusts the side pieces before nailing them. One set of side pieces being in position, the partly-formed box is turned through 90 degrees. One of each pair of clamping-disks 21 bears at quadrantal points lateral studs, each having a roller sleeve moving along a portion 67 of a fixed plate 103, Fig. 9, and simultaneously turning through 90 degrees, and by the aid of this device the supporting-arms which are linked together in pairs, cause the rotation of the box through a right-angle while rising from and returning to the nailing-bases. Second and third sides are added to the box in like manner, and then the cam 20 operates to release the disks, leaving the box free, whereupon it is ejected from the machine by mechanism operated by the cams 18 on the shaft 10.