Patent GB-191225909-A (GB)
Title: An Improved Hinge for the Lids of Receptacles Made of Sheet Metal and Method and Apparatus for Forming the same.
Inventor: MCCONACHY ROBERT CHARLES
IPC: B21D53/40
Filed: 1912-11-11
Granted: 1913-11-11
Abstract: 25,909. McConachy, R. C. Sept. 16, [Convention date]. Angular b e n d i n g; punching; punches. - The hinges for the lids of sheet - metal receptacles for tobacco, confectionery, m e d i c i n a l and chemical preparations, &c. consist of integral laterally - projecting pins on the lid, around which fit bulbed tongues on the receptacle. The back of the prepared lid blank is provided with one or more depending p o rtions with lateral lugs, which are first folded into semicircular or circular pintles 3, 10 as shown in Figs. 3 and 9. Bulbs 5 are formed on the back of the receptacle with incisions 7 on the inside for a lid as shown in Fig. 3, but on the outside for a lid as shown in Fig. 9, the space between the bulbs or at the exterior of the bulbs being recessed. The bulbs are then pressed outwards into the form of tongues, Fig. 5, for the reception of the pintles and then closed over them. In an apparatus as shown in Figs. 11, 13, and 20, the lids and receptacles are fed from shoots 24 by fingers 26<a> on a pair of intermittently-operated chains along ledges 25, 25<a> on opposite sides of the lower dies 21<a>, 22<a>, 23<a>, on to which they are pushed in turn so as to be prepared and connected by dies 21, 22, 23 on a slide 16 operated by an eccentric 15 on a mechanically or manually operated shaft. The chains are driven by worm and bevel gear through geneva bevel-wheels 35 or other gear. The rear or lid blanks and the first two front blanks or receptacles are pushed on to the dies by pads 39 on the end of rods 38, 38<a> which may be faced with leather, rubber, &c. to prevent injury to the blanks. The rods 38, 38<a> are connected by springs 52 and collars 53 to loose bosses, which are provided with bars 54, 49 to engage the bifurcated ends of levers 36, 37 operated by a cam 45 and lever 44 through a rod 43. The blanks are ejected from the dies 21<a>, 22<a> to bring them again into the paths of the chains by disks 61, Fig. 20, carried by rods 59 which are operated by slotted cam-bars 60 connected to a bar 66 and reciprocated by a lever from a cam on the shaft 34. After the blanks have been prepared on the dies 21<a>, 22<a>, they are conveyed to the die 23<a>, Fig. 13, on to which they are forced by pads, the rod 38 in this case being operated from the rod 43 through levers 57, 55 in consequence of the greater movement required to place the receptacle over the narrow die 23<a>. The ledge 25<a> is raised at the back of the die 23<a> to the level of the step 75. The hinge is connected and the tongues are pressed over by the die 23, and the article is then ejected by a disk 71 connected by a bell-crank lever 69 to a rod 70 clamped to the bar 66. The article is then conveyed by one of the chains to a shoot 76, which may be tapered so as to close the lid on the receptacle. The lids may be treated on the front and the receptacles on the back of the dies. The lower dies may be formed with spring- pressed insertions 72, Fig. 22, to facilitate removal of the receptacles and lids therefrom. The Specification as open to inspection under Section 91 (3) (a) states that the tongues need not be bulbed; this subject - matter does not appear in the Specification as accepted.