US2804195A - Moulds for casting single-type bodies - Google Patents

Description

Aug. 27, 1957 JUPP ET AL MOULDS FOR CASTING SINGLE-TYPE BODIES Filed Dec. 6, 1954 4 Sheets-Sheet l ATTORNEYS Aug. 27, 1957 JUPP ETHAL 2,804,195

MOULDS FOR CASTING SINGLE-TYPE BODIES Filed Dec. 6, 1954 4 Sheets-Sheet 2 Robevr Hl rid ur? Meuvlcc Hi h A $2 Mu-5r ATTQQNEYS Aug. 27, 1957 R. A. JUPP ETA!- MOULDS FOR CASTING SINGLE-TYPE BODIES Filed D b. 6, 1954 4 Sheets-Sheet 5 eba r a] Mom-ice RM INVE. *ved Kevd ATTORN EVS Aug. 27, 1957 R. A. JUPP ET AL 2,804,195

MOULDS FOR CASTING SINGLE-TYPE BODIES Filed Dec. 6, 1954 4 Sheets-Sheet 4 United States Pate re MOULDS FOR CASTING SINGLE-TYPE BODIES Robert Alfred Jupp, Horley, and Maurice Richard Dewhurst, Coulsdon, England, assignors to The Ivlonotype Corporation Limited, London, England, a British corporation Application December 6, 1954, Serial No. 473,248

2 Claims. (Cl. 199-87) This invention relates to moulds for casting single-type bodies and particularly to such moulds as are used in type-casting and composing machines, the operations of which are governed by a prepared controlling or record strip and wherein type-matrices are assembled in rows and columns in a frame or carn'er movable relatively to the type mould, to position the selected matrix over the mould cavity.

More particularly, the invention relates to moulds for the production of type-bodies with characters in Arabic or other oriental languages, wherein the characters may extend to a greater extent beyond the centre line of the body than they do with Roman or Latin characters, or where an accent may beadded at the top or at the foot of the character. One of the chief difficulties in dealing with oriental languages is in providing sufficient matrices for a satisfactory fount in a single matrix carrier, the theoretical dimensions of which may not be limited, but which for practical purposes must be limited.

Such moulds, as hitherto constructed and with relation to which an embodiment of the invention will now be described, have been furnished with a main dimensioning blade extending to the full point size of the mould and a cut-off blade having a forwardly extending portion fitted into a shoulder or cut away part on one upper corner in the main blade, is of less than full point size. These blades, when operated together, dimension the mould for a type body and a character bearing end, both of full point size, but when only the main blade is withdrawn to open the mould cavity and the cut-off blade is projected to close a corresponding part of the upper end of the mould cavity, the resulting type body is cast of full point size; but the character bearing portion is of less than full point size.

The operations of both main and cut-olf blades in the known mould are controlled by a perforated controllingribbon, the actuation of the main blade being designated or determined and also operated by mechanical devices while the actuation of the cut-01f blade is designated or determined by an air-operated motor and operated by mechanical devices.

According to the present invention, the movements of the cut-off blade are both designated or determined by pneumatic devices and the actuation of this blade is also effected by pneumatic devices in proper timed relation to other movements of the machine during a cycle of operation.

The invention will now be described with reference to the accompanying drawings wherein Fig. 1 is a front elevation of part of an existing typecasting and composing machine in which the mechanism of the present invention is incorporated.

Fig. 2 is a plan view of the mechanism shown in Fig. 1.

Fig. 3 is an elevation of the same mechanism as viewed at a right angle to Fig. 1.

Fig. 4 is a sectional elevation of part of the pneumatically operated device for controlling the movement of the cut-off blade according to the present invention.

Fig. 5 is a sectional elevation as viewed at an end, partly in section right angles to Fig. 4 and on the reverse side of Fig. 3. 7

Fig. 6 is a perspective ,view of the mould, with main and cut-off blades moved back to dimension the mould cavity.

Fig. 7 is a similar view showing the mould in which the cut-off blade forming part ofthe present invention is in the forward or cut-off position.

Fig. 8 is a similar view showing the main blade and the cut-01f blade of the present invention moved back to dimension the mould.

Figs. 9, 10 and 11 are perspective views .of the upper portions of type bodies as produced with setting of the blades respectively according to Figs. 6, 7 and 8.

Fig. 12 is a diagrammatic view, showing the air circuits, air valves and air motor according to the present invention.

The type mould in its general features is of well known construction and comprises a frame A, two side blocks A (only one of which is shown in Fig. 6), which form two side walls of the casting cavity a and between which the main mould-dimensioning blade B is a close sliding fit. In the base A of the mould, underneath the main blade B, is an inlet A for molten metal (see Fig. 6). The existing cut-01f blade B rests upon a cut away portion on the upper side of the main blade B and is furnished with an extension B at its forward end, which normally has its forward end flush with the forward face of the blade B and its upper surface is level with the upper face of the blade B.

The cut-off blade B according to the present invention fits into a longitudinal recess in the upper surface of the main blade B (see Figs. 6-8) and in the rearward position, the rear end of this blade bears against a shoulder b on the main blade B. At its forward end, this cutoif blade B has an upwardly extending portion B and a forwardly extending projection B which is a sliding fit on a shoulder on the forward end of the blade B. On its under side, the blade B is furnished with a slot B into which fits one end of a lever C which is actuated by a bar C coupled to a pneumatic motor C (see Figs. 1, 6 and. 12).

The supply of air to this motor C is controlled indirectly by perforations in the controlling strip which controls the supply of air for various operations of the type casting machine.

In the embodiment of the invention nowto be described, two ports X, X in the existing air supply bar X (Fig. 12) are employed, but these two ports do not together form an operating air signal in the normal running of the machine. Whenperforations in the perforated control strip are presented at the air bar X to uncover ports X, X when the air from port X enters an inlet D in a duplex air-valve box D, which diverts required air from its normal function to control mechanism of the present invention. This diverted air enters the box D beneath a piston D therein which it raises.-

Simultaneously, air from port X enters the valve box D through an opening D and the piston D being raised, this air passes now round the piston and out by an opening D and is conducted by a pipe D to one of an air chamber D in which there is a slide or. piston D This slide D is retained at one end of the chamber D by a spring D and the air pipe D enters this chamber at the end opposite to the spring D (see Fig. 12).

Attached to this air chamber D is a valve box D wherein are arranged two spring loaded air control valves D D and a pipe D leading to the chamber in which these valves are situated is coupled to a constant air motor C and the valve D similarly controls the flow of 7 air. r gh a tire P ta the o her and 9t H1919; C ee Fig. 12

A r me hape s isiinem mb D e i 3, 4'and pivotally. supported on a stationary support at d (see Fig. 4), is furnished with a pin 4% which projects into a groove 1? in thepistonDl (seeFig. 12) through. a slot 4. .in:the slot of the air chamber D5 and will be set by the movements of this piston as dictated by either the valve D or the valve 13. and determine by positioning thelever E whetherthe cut-off blade B? will be drawn back to open the part of the mould controlled by it and in conformity with, the positioning of h ma lade r i l '29 P a ed n. t rwa pos tion to shorten a part of the mould cavity and relatively vw e m b ade B hi h be oved b k o d me sion the mould in the direction of a type body;

An operating lever E; (see Figs. 1-6) is pivoted to an existing arm on the easting machine, whi h raise and lowered once in each cycle of operations of the machine. The lever E is maintained against accidental dis.- placement by a spring E 1 Owing to peculiarities in the cycle of operations of the type-casting machine to which the invention applies, the combined signal X X is applied to the air supply bar X somewhat in advance of the point at which'the mould can be dimensioned by the mould blades. When this combined signal X,X which controls the pneumatic de vices of the invention, is presented at the air supply bar X the rocking arm F is in its lowest position for the casting of a previously designated type body for which the mould blades have already been positioned.

The normal positionof' the directingpieceD is shown in Fig. 5, in which position it is maintained, or to which it is returned by the spring D? acting on the slide D".

When the arm F is moved upwards carrying-with the lever B, this lever E will engage the directing piece D and be positioned to operate on the next downward stroke of the arm F either the valve D or D In the absence of the combined signal X X the lever E will, in the down stroke of thearm F, act on the valve D and the air will move piston of the motor C to position shown in Fig. 12 and maintain the cut off blade in,

the position shown in Fig.7. a

When the combined signal X X is presented, thecutotf blade will be moved to the position shown in Fig. 6, the directing member D will be set in the position shown in Fig. 5 by. the air during the upstroke of arm F so that in the succeedingdown stroke of armF the lever B will act on the valve D and admit airto the cylinder of piston C to act on lever C and move the blade B to the position shown in Fig.6. v e

Before thearm Eis raisd however, air will, have en tered the cylinder of the slide D7 and during the upward stroke, the directing piece D will be set to position the lever E and open one or other of the valves D D so The air ports X, X used for the purposes of the invention, are separately used as components of air signals for positioning a matrix carrier and other purposes. Where so used, the air through the port X passes to a position Y of the matrix-positioning mechanism and part of this air may enter the valve box D without any effectual action. Similarly, air through the port X will enter the valve box D and pass around the ,piston D and thence to the position Y of the matrix positioning mechanisms.

The cut-off blade B may be moved independently of the blade B from the position shown in Figures 6 and 7 to the position shown in Figure 8, to shorten a part of the mould cavity on theside opposite to that on which shortening is effected by the blade B so that such shortening may be produced on either side, or on both sides of the cavity. The mechanism for determining the move ments of the blade B and for actuating it are of known type and do not forrn part. of the, present invention.

wha aims:

1. In a single-type castingrmould furnished with a main full-pointsige dimensioning blade and a cut-off di-v mensioning blade, the arrangement of anair operated motor'for actuating the cut-off blade, two. valves cou.

pled to a constant supplyof air and separately controlling the supply of air to the air operated motor for the cut-. ofi blade, a pistonoperatedintermittently by air controlled by signals ina perforated record strip a directing piece,

means coupling thedirecting piece, to the air operated pis-.

of two paths duringrnovement of the rocking arm and so.

to operate one or the other of the two valves coupled to the air motor for the cut-oil? blade.

2. In a single-type castingmould furnished with main and supplementary mould-dimensioning blades, ,the' combination with an air operated motor coupled to the sup.-

plementary blade, a spring-loaded and air operated piston coupled with a directing piece, separate valves for the air motor coupled to the supplementary blade and communicating with a constant air supply,, an operating lever carried on a rocking armtor separately operating the valves for the motor forthe, supplementaryblade and an air valve controlled by separate signals in a record strip to admit air to thepistonand set the directing piece, between the downward and upward movement of the,

rocking arm.

References Cited in the file of this patent UNITED. STATES. PATENTS 944,408 Bellow Dec. 28, 1909 980,960 Indahl et al Jan. 10, 1911 1,042,476 Pierpont Oct. 29, 1912 1,087,419 Amrhein Feb. 17, 1914 1,328,256 Bancroft et a1. Ian. 20, 1920

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