Patent GB-191029058-A (GB)
Title: Improvements in Typographic Casting Machines.
Inventor: HARRISON GEORGE
IPC: B41B11/52
Filed: 1910-12-14
Granted: 1911-06-29
Abstract: 29,058. Harrison, G., [Ludlow Co.]. Dec. 14. Metal pots and pumps.-In type-bar making machines having sliding matrix-bars, the metal is contained in a pot B<1>, Fig. 6, provided with a cylinder b and a piston b<1>. The pot. is surrounded by a heating-chamber B having an extension b<4> which surrounds the spout b<2>, and an opening b<5> to receive a gas burner or the heated gases therefrom. The pot has a removable cover b<6>, through which passes a rod connecting the piston with a lever b<8>, pivoted on the pot. To the lever is pivoted a rod b<9>, which passes through a universal joint b<10> on which the pot is mounted. The piston is depressed by a spring b<11>, the tension of which can be adjusted by means of screws and nuts, and is raised by a lever b<14> and a cam on the main shaft H. The pot is rocked in an horizontal plane to bring the spout beneath the mould C, and in a vertical plane to raise the spout into contact with the mould. The movements are affected by a single grooved drum H<2> on the shaft H which is engaged by a spring-pressed pin b<16> passing through an arm b<19> pivoted to the pot. The discharge end of the spout carries a plate b<20>, Fig. 20, having a series of holes b<21> through which the metal passes. To prevent excessive heating of the top plate A of the machine, a number of horizontal metal plates b<22> are secured to the lever b<8>. A hood B<3> and pipe b<23>, Fig. 5, are provided for carrying off the heat of the spout when in the retracted position. The opening in the plate A through which the mould C projects is periodically closed by a reciprccating shutter K, Fig. 6. A pivoted plate c<12>, Fig. 5, protects the parts beneath it from the heat of the pot &c. Moulds.-The mould C, Figs. 5 and 6, is formed by two side members separated by end pieces which are exchangeable to enable the width of the slot to be varied. It is carried by a vertical slide C', which is reciprocated by a cam. Trimming and ejecting type-bars; galleys.- On the mould slide C', Fig. 5, is mounted an horizontal slide D<1> carrying a knife D which, as the mould descends, trims the lower edge of the type-bar. After the descent of the mould, an horizontal slide E<1>, Fig. 6, is brought over it to receive the type-bar and convey it towards the galley G. On the underside of the slide E' is a rectangular knife E, through which the type-bar is ejected into the slide by a plunger c<9>, Fig. 5. The blades of the knife E are inclined so as to have a shearing effect. During the ejection of the type-bar, the slide E' is locked in position by a reciprocating pin e<3>, Fig. 6. The slide E' having moved into the position shown in plan in Fig. 12, the type-bar is moved by a finger f on a lever F across the end of the galley G, into which it is pushed by a plunger F<2>. The slide E<1> may be replaced by another bearing knives adapted for trimming type-bars of different size. Driving-mechanism. - The cam - shaft H, Fig. 16, of the machine is preferably driven by a constantly-rotating gear-wheel m<2>, turning freely on the shaft and adapted to be connected thereto by a spring-pressed clutch-member m<3>, which is withdrawn after one revolution by a spring-pressed detent m<5>. The detent is retracted to start the machine by a pedal or hand-lever.