Patent GB-190411246-A (GB)
Title: Improvements in Stamping Presses
Inventor: LAVERY HENRY CHARLES
Filed: 1904-05-16
Granted: 1905-03-30
Abstract: 11,246. Lavery, H. C. May 16. Stamping and embossing ; punching.-Relates to a machine, preferably coin-freed, for stamping letters and figures in a circle on a metal or other disc, one out of several types, having different designs in the centre portion, being chosen by the operator. The machine embodies coin-freeing mechanism, blankselecting means, blank-feeding apparatus, letter stamping and spacing devices, and blank-delivering mechanism. The whole machine is enclosed in a case, on the top of which are the dials 6, 108, Fig. 3, and on one side of which a handle at the end of the actuating-shaft 26 projects. The coin passes from a slot in the upper part of the case through a shoot to the coin-holder 93, Fig. 4, where it is held by a flange 96 on the spring-controlled pivoted guardplate 97, unless a slot in the end 92 of the lever 87, pivoted at 88, is in the right position to receive it, when it passes down to the aforesaid slot. By turning the handle at the end of the shaft 26, the frame 52, with its extension 90, is moved to the left by a tappet 54 fixed to the shaft 26, and thereby actuates through the lever 87 and the coin a lever 85, pivoted at 86 and having a slot in its lower extremity engaging with a pin 84 on a slide 82. After moving a short distance, the point 95 on the lever 87 comes into contact with the pin 84, and the pressure on the coin, which was pushing the lever 85 forwards, is released, so that the coin may fall sideways into a suitable receptacle, the moving of the slide 82 being completed by the part 95. The blank discs, of whatever kind selected, are brought in a pile by the selecting-means to above a plate 110 on a lever 112 controlled by a spring 113, and the slide 82 in its forward movement first depresses the plate 110 and then pushes the lowest blank along a guideway 83 on to the rotatable anvil 32, a full stroke of the slide being insured by a double-acting pawl engaging with a toothed segment 30 on the shaft 26, and controlled by a spring actuated by a bell-crank lever moved by a link 132 from a lever 126, in such a manner as to prevent the segment 30 from returning until a full stroke is completed, when the pawl is reversed. The blank-selecting means consist of a series of tubular holders for holding the lowest blanks, arranged in a ring, and formed in one piece 100, Fig. 3, pivoted on a centre, and connected by stout rods to a spurwheel 101, also carrying a pivot. The stout rods form guides for piles of the blanks, having holes 69, Fig. 15, by which they are strung on thin rods 114, the lower ends of which project into the tubular holders. A pointer 107 is moved to above one of a series of sample blanks shown on a dial 108, and thereby, through spur-wheels 105, 101, moves the pile of blanks of the desired type to above the plate 110, Fig. 4, the holders 100, Fig. 3, being held in place by a roller 116 on a pivoted arm 115, and pressed into the recess between two holders by a spring around the pivot. The blank, on passing to the support 32, is guided to the correct position by a pivoted guide 118 and a fixed guide at the opposite end of the support. The blank is held firmly against the support 32 by the suitably-formed foot of a presser-spindle 34, connected to a spring-controlled frame 36. When the spindle 34 is to be lifted to insert or remove a blank, the die-wheel 10, Fig. 3, is brought into such a position by moving a pointer 7 to above the words "start" or "finish" on the dial 6, that one of two holes formed in the side of the wheel 10 come opposite the lower projecting point of a pawl 43, Fig. 4, at the lower end of a centrally-pivoted lever 41, carrying at its upper end a spring-controlled sliding extension 49. The point of the pawl 43, by entering the hole in the wheel 10, allows a spring to tilt the lever 41 and the extension 49 into such a position that, when the shaft 26 is actuated, a projection on the shaft, coming in contact with the horizontal part of the extension 49, lifts the frame 36 by the end 37. In some cases, when a blank is fed forward without the pointer 7 having been placed above the word '' start," the lever 41 is shifted by a horizontal cam-piece 55 on the frame 52, through the end 128 of the lever 124 pivoted at 125 and moved into operating position by two pins 127 on the lever 85 engaging with the cam-part 126. A second campiece 51 returns the lever 41 to its initial position. The frame 36 also lifts the sliding latch 122, the end 121 of which then allows the pivoted guide or ejector 118 to be turned by the spring 120, and to sweep the finished blank off the anvil 32 into the delivery shoot. The ejector is returned to its normal position by the forward movement of the slide 82 when feeding the next blank. The dies or punches for letters, figures, &c. are carried in vertical holes round the periphery of the die-wheel 10, Fig. 3, the edge of which overlaps the blank, and the desired punch is brought into operating position when the pointer 7 points to the desired letter or figure on the dial 6. The punches are normally held in their sockets by springs radiating from the centre, but are pressed down when in position to stamp the blank by a projection at the lower end of a slide 22 actuated by an eccentric roller or tappet 27 engaging with an eccentric cam-shaped part of the slide, which also has an incline 31 formed at a lower corner, to actuate one end of a pivoted bell-crank lever pivoted at 63 working the spacing-mechanism, a spring from the end of the long arm of the bell-crank lever being attached to the outer end of a bar 57, shown in section in Fig. 4, which is attached to a frame 56 pivoted on the spindle 34 and carries a pawl or pawls 61 to actuate the toothed blank-support 32, holding-pawls being provided to prevent the support from moving back. The movement of the frame 56 is regulated, according to the width of the letter stamped, by a stop on the end of the bar 57 coming in contact with projections of varying length on the inner edge of the die-wheel 10. The stamping normally commences near the hole 69, Fig. 15, in the blank, but the blank may be initially set by turning a pointer 71 working above a scale, and driving a shaft 70 carrying at its lower end an arm with the pawl 76 to drive the ratchet-wheel 75, and, through the wheels 74, 77, the anvil 32. The parts are held in the adjusted position by a ratchet-wheel 78 and a pawl 79 pivoted on a pivoted support 80, until the stamping is finished, when an arm 38 on the frame 36 lifts the pawl out of engagement with the ratchet-wheel and the parts are returned to their original positions by a spring 73.