Patent GB-139763-A (GB)
Title: An improved apparatus for use in making boxes, crates, and the like
IPC: B27M3/34
Filed: 1920-02-20
Abstract: 139,763. Case Making Machine Co., (Assignees of Crosbie, R. G.). March 3, 1919, [Convention date]. Inserting wire and like metal nails.-In a device for holding box-ends correctly in position on a table so that the top, bottom, and sides can be nailed thereon by an operator, means are pro- .vided to give the ends a quarter-turn at a time. Overhead nail-containers are oscillated to feed nails ready to hand. Various adjustments can be made for variations in thickness &c. of the wood. Box-ends A, Fig. 1, are held in rotatable chucks which, after one side is nailed on, are lifted and rotated one-quarter revolution for another side to be completed &c. The box-ends are held between rotatable chucks 35, 38, Fig. 3, having no end movement, and a non-rotatable chuck 37 which acts as a brake, and a spindle 39, both having lateral movement controlled by spring- pressed levers 44, 42 pivoted at 45, 41 and operated by a handle 40. The levers are connected by a rod 43 carrying a spring 54, so that the distances between the chucks can vary for different thickness of box-ends. In a modification, the chuck 35 also has lateral movement. The chucks are carried by arms 30, 31 on frames 26. The arms 31 can be made to slide laterally on the rod 27 to accommodate different lengths of boxes. The arms 31 are also pivotally-adjustable by means of screws 33, so that the edges of box-ends of unequal size can always be brought down on to the table. The frames 26, Fig. 1, can be raised vertically by rods 25 in bearings 24. This is done by a treadle 68 connected by side rods 67 with the arms 30, 31. The frames 26 &c. are counterweighted at 69. The position of the box ends is fixed by a stop-bar 79 operated by a treadle 72, the travel of which is limited by an adjustable guide 76. An adjustable collar 81<1> on a rod 81 engages a swivel 81<11> on the treadle 72. The rod 81 connects with the stop-bar 79, Fig. 5, the travel of which can be regulated by a slotted guide 79<11>. The chucks 35 are turned a quarter-revolution by a rod 93, Fig. 1, which, as the frame 26 &c. is raised, turns a cam 91, Fig. 7, so as to disengage a spring pawl 89 to release a detent from a notch 88 and allow a face-plate 84 attached to the chuck 35 to make a quarter-revolution. If the notches 88 are eased, slight irregularities in the box-ends are allowed for. In a modification, Fig. 11, the frames 26 are pivoted on the top of fixed spindles 25, and pins 103 in the face-plate attached to the chuck 35 are brought successively into engagement with a detent in a spring-pivoted bar 104. The detent is released by the cam 91 engaging a weighted lever 108 pivoted on the rod 104. Nails are supplied, ready for the operator to handle, from an oscillating hopper 120, Fig: 12. The hopper is held in a bearing 124 and oscillated by a rod 126 operated by the rise of the frame 26. Some of the nails pass over projections 131, Fig. 13, into depressions 129 through which the shanks pass, the heads being held by springs 133. In a modification, the heads are held by pivoted members 135, Fig. 15, and the shanks by forks 136. Where a compartment box is to be made, additional chucks 118, Fig. 10, with spring arms 119, adjustable on the bars 27, are used.