Patent GB-605989-A (GB)
Title: Improvements in or connected with metal boxes, cases or the like
IPC: F42B39/00
Filed: 1946-01-08
Abstract: 605,989. Ammunition boxes. STILES, N. R. Jan. 8, 1946, No. 658. Addition to 536,925. [Class 9 (i)] [Also in Group XVII] The box claimed in the parent Specification has the two wall members each consisting of a side and a half of each end wall constructed of two sheets of metal 1, 2 connected along the top and bottom edges so as to leave a space 7 which is filled by some rigid material. The inner sheets are joined to the outer by double V-bends 5, 6 at the top and bottom edges, which are interengaged and pressed together, the outer sheet having been previously shaped to accommodate the filling material in the side panels 4 and end panels 12. The outer sheet 2 projects above the inner sheet 1 at the upper edge to accommodate closing members. The wall members 1, 2 are jointed at the ends by forming single V-bends 8 at each vertical edge and locking them with a tongued plate 9 by pressing. End caps 15 of sheet metal have flanges engaging. in the double V-joints in the top ends and sides of the box and have grooves 21 extending along the width of their undersides. The top of the box is closed by three hatch plates 16 with side flanges 22 engaging between the double V-joints. The hatch-plates have recesses 23 in which hinged wire handles 24 may be flush with the plates. The centre hatch-plate, which is accommodated in a recess in the upper edge of the inner V-joint, has over it a bridge-plate 17 having a wire handle 26 attached to one edge. In the case of ammunition boxes an arrow and a representation of a cartridge 27 may be pressed in the bridge plate to indicate the direction in which the contents are loaded. Two tear-off strips 18 join the bridge 17 to the end caps 15. The strips 18 have tongues 30 at one end to which are attached wire handles 31. Grooves 53 may be pressed in the strips 18 and a hole 32 may be included, the edges of the hole being rolled round a re-inforcing strip. A plate 52 may be provided for holding the handle in a bent back position. The bottom of the box is closed by a plate 38 with edges turned to form a tray and rolled to produce a curled rim 39 which engages over cam-like projections 37 pressed in the base of plate 2. A strengthening piece 40 may be provided with flanges 41 engaging between the double V- joints. This plate is positioned at the ends so as to be clear of projections 37 if the bottom is to be later removed, or placed opposite these projections to permanently secure the bottom. All the box joints are soldered from the outside and the bridge 17 is soldered to the upper edge of the box above the loose hatchplates. The tear-off strips are soldered to the end caps 15, the bridge-plate 17 and the edges of the box, recesses 29 being provided in the bridge-plate to enable the solder to run under the tongues 30 and along the edge of the hole 32. In amminition boxes, a guide-plate 54 having tongues 35 engaging in slots 36 in the inner wall and having a bead 34 on its upper edge fitting into the groove 21 in the end caps 15, may be provided at each end. Carrying straps 43 having clips 48 holding each end may be fitted into channel sectioned rings 45, having slots 47, the rings being secured in recesses in the outer wall 2. Tabs 49 on the clips 48 engage under the rings 45 and in slots 47. The tear-off strips may have fish-tail shaped tongues 30 which engage a diamondshaped pressing on the bridge-plate 17 and are soldered to it. The bridge-plate in this case, is not soldered to the box, but has flanges engaging in the double V-joints of plates 1 and 2. The ends of the box may have recesses 50 for handles.