Patent GB-190316297-A (GB)
Title: Improvements in and connected with Die-presses for Embossing Name-plates and the like
Inventor: THOMPSON WILLIAM PHILLIPS
Filed: 1903-07-23
Granted: 1903-10-29
Abstract: 16,297. Thompson, W. P., [Roovers, A. W., and Roovers, A. H.]. July 23. Stamping and embossing; punching.-Relates to presses particularly suitable for embossing letters and characters upon strips of aluminium or other material to be used as name plates, and known as " name-plate machines." The notched dial plate C, Fig. 20, which is set by a pointer l, is mounted loosely oa a pin h fixed in a spider frame f secured to the inside of the cabinet cover B. The dial plate is recessed to fit over a flanged aperture on the cover to form a weather-tight joint. Die plates G, H, secured together in pairs, are screwed to the boss of the dial plate, and can be interchanged for other pairs by means of the aperture in the cover. The die plates are provided with characters &c. round their edges corresponding to those on the dial plate. The lower die plate is rendered rigid by a backing r while the edge of the upper one can be sprung towards it when embossing the characters. The actuating-lever D, pivoted on the head of the pin h, carries a segment e. with a rib d to engage the notches in the dial plate, and a cam surface e', f to press down the upper die plate by means of a crank lever S, Fig. 13, with a bowl d' bearing against the cam surface. The dies T, U, Fig. 14, for dividing the strip and piercing and finishing the ends of the name plates are carried by the two die plates, the upper die T sliding in a casing V and being operated by the end m<1> of the lever S when the handle is depressed with the dial plate in the " finish " position. The segment e is prevented from springing by a roller o on the apider f, and the lever D is returned by a spring E. The strip-feeding mechanism comprises a pair of wheels I, J. Fig. 3, the upper wheel J being mounted in a pivoted yoke K and pressed against the lower by a spring so that it may be lifted to allow the end of a fresh strip to be inserted. The lower wheel I is carried by a spindle t having a ratchet-wheel Q provided with operating and check pawls. The operating-pawl s is drawn back against the action of a spring, during the raising of the lever D, by a jointed rod M, 0, the part M carrying a projecting plate w bearing against a roller v on the segment e. During the first part of the descent of the lever, the feed is effected by the stretched spring, the amount of feed being varied to suit the spacing &c. by a notched plate R on the plate r, against which a lug x on the rod M bears. The feed is automatically locked when the lever D has been actuated in the " finish" position or when a predetermined length of strip has been fed. This locking is effected by a pivoted hook W, Fig. 8, drawn down by a spring s<1> when a trip n' is disengaged from an arm q<1> on the boss of the hook. The trip is carried by a rock-shaft Y and is disengaged by the contact of a pin i on the die T with an arm o' on the rockshaft or by the contact of the end of the strip with an inclined plate p<1> carried by the rock-shaft. The trip is reset by raising the hook by means of a pivoted lifter Z<1>, which may be conveniently effected by a coin-controlled slide. To prevent bending of the name plate as embossing proceeds, the lower die plate may have a beaded or raised edge, or both die plates may have inclined edges as shown in Fig. 16, or the lever S may raise a pivoted finger d<2>, Fig. 17, to counteract the bending caused by the embossing.