US1228524A - Type-casting machine. - Google Patents

Description

S. ABHSEY.

TYPE CASTING MACHINE.

APPLICATION-FILED MAY 2e. |913 Patented June f, 191,7.

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APPLICATION FILED MAY26. I9I3 Patented J une 5 1917. 3 SHEETS-SHEET 2.

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TYPE CASTING MACHINE.

APPLICATloN FILED MAYzs, 1.913

Patented June 5, 1917,

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SHA'NKER ABAJI BHISEY, OF LONDON7 GLAND, ASSIGNOR TO SIR RATAN TATA, OF

LONDON, ENGLAND. v

TYPE-CASTING MACHINE.

Specification of Letters Patent.

Patented June 5, i917.

Application filed May26, 1913. Serial No. 770,000.

To all whom t may concern:

Be it known that I, SHANKER Anaal Bnjrsnv, ofLondon, England, have invented certain new and useful Improvements `in Type-Casting llfachines, of which the following is a specification. i y rlhis invention relates to a new lor improved type casting machine of the kind in which the type molds are set in theperiphery of a wheel which maintains continuous contact with a casting spout. Hitherto in such machines the molds have been set radially and the types have been extruded from them by the movement of the matrices radially outward through the molds. This method results in wearing of the mold parts. Moreover the wheel has to be of considerable diameter in order that thecurvature 4of the, end of the mold which forms the bottom of the type may be negligible, and the pressure ofthe periphery of the ymold upon the casting spout causes wear of the molds resulting in their gradual shortening; while there is further wear between the molds and the stationary7 cover plate, causing a reduc tion in the body of the type.

The object of the present invention is to obviate these defects and the primary feature of the invention consists in providing between the casting spout and the molds proper a mold 4member or mold members in which tang's or break pieces are in some cases c'ast integrally with the types. By this provision all the wear between the casting spout and the mold is taken up by the mold member or members aforesaid which for convenience may be termed break or tang molds and consequently the lengths of the effective parts of the types are invariable. A further important though not necessarily essential feature of the invention consists in forming the molds parallel with the axis of the wheel instead of radially relative to the said axis and other important features consist of improved methods of extruding and collecting the types, and in the method of forming nicks in the type.

The invention further comprises certain features of construction and arrangement which are hereinafter described and set forth in the claims.

ln the accompanying drawings Figure l is a front elevational view of a machine con structed in accordance with my invention. For convenience of illustration the nozzle plate is removed and'sections of the machine at di'erent planes indicated at X-X and Y-Y of Fig. 2. g

Fig. 2 is-a sectional view on line A-A of Fig. l with the details of the molds omitted. Fig. 3 shows the molds in detail to an enlarged scale the view being a section on line B-B of Fig. l withA the central portions of the wheel omitted and one mold shown in the closed or casting position and the other in the fully open position.

Fig. 4 illustrates a method by means of which thetypes can be transferred tothe collecting chute.

Fig. la is a side elevational view partly in section illustrating an alternative manner in which the types are transferred from the casting machine to a collecting chute their tangs or break pieces being removed in the process, provided the types are cast with break pieces.

Fig. is a diagrammatic elevational view of the mold wheel illustrating the possibility of casting and collecting types at two positions of the mold wheel.

Fig. 6 is a plan of Fig. 4.

Fig. 7 isla plan view illustrating a bifurcated platform by means of which the types can be removed from a mold by a platform having a bifurcated end which projects'beneath the character and the tang.

Fig. 8 is a section on line C-'-C of Fig. 7.

Fig. 9 is an enlarged view of a detail shown in Fig. l designed to illustrate more clearly the manner in which the cast types are delivered to the receiving platform.

Fig. 10 is a plan view of Fig. 9 and Fig. l1 is a section on line Z- -Z of Fig. 3.

Fig. l2 is a detail of a mold block. y

Referringto these drawings and particularly to Figs. l, 2 and 3 the numeral `l designates the mold wheel which is suitably supported in bearings 2 carried by means of standards 8 andby any suitable mechanism this mold wheel l continuously rotates. The body of the mold wheel l may be provided with water cooling recessestthe cooling water being introduced into these recesses through the pipe 5 and passing out through the passages 6 and final outlet 7. Around the periphery of the mold wheel l molds 8 parallel to the axis of the wheel are arranged. The molds are arranged in groups separated by the blocks 9 and each group of molds is made up of L-shaped blocks comprising body and ico set width pieces 10 and wall pieces 10a as clearly shown by Fig. 12. The molds are closed :by cover Iplates 11 each group of molds having a common cover plate.' The inner ends of the molds are of course closed by the matrices 12 and the casting spout `13 fits in a V-shaped groove in a member 14.- interposed between the molds and the casting spout. For convenience this member-#the provision of which is a primary feature of the present -inventionmay be termed the break forming member of the mold although as will hereafter appear the types vare cast without breaks in the form of machine show-n particularly in Figs. 1,2 and 3. The further details of construction will be ymore readily apparent if rdescribed in conjunction with the :operation of the machine which is as follows:

As aforesaid the .mold wheel 1 continuously rotates carrying with it the member 14 which .maintains continuous abrading contact with the casting .spout 13 through which molten metal is continuously ejected. As each mold passes the lcasting spout the metal passes into the lmold through the orifice 15. Thiscasting position is shown .clearly `in the lower half of Fig. 3 and during :the period of casting fthe matrices 12'carried by the ma- .tgriX blocks 16 are held firmly in position owing to the cooperation of the roller 17 with the matrix controlling cam 18 which is carried by the stationary annular frame 19. VThe matrix blocks 1.6 are separated from the roller carrying block 2.0 and a strong spring 21 is interposed rso that thepressure from .the loam 128 :is transmitted through this Spr-ing .and thais any back-lashor irregularity due "toy wearfor @other causes is automatically .provided for. The matrix blocks 16 and their associated parts are slidably mounted in the member 22. During the casting period'the cover plate 11 'of the mold is also subjected Ato a inafl closing pressure by .reason -of -its lrol-ler 23 being inlengagement with the cover plate xcam .24: and here again this tinal closing pressure :is transmitted through a spring125.

The mold wheel .is as has :previously been explained continuously rotating and the abrading movement between the `nipple Tof the casting spout 13 yand the member 14 serves to wipe vthe ymeta-l away from the feet of the "type [so that thetype are cast in this instance without break pieces. The cast types yare :now in the .mold and it is necessary that vthey be extruded and removed before the mold .again reaches the casting position. tihen the cover Aplate roller 23 leaves the `came the cover plate moves slightly away fromfthe type by means of springs 23a and when the roller 17 passes the cam 18 Vthe matrix blocks with their matrices 12 move away from the :mold under .the influence of the sprimgs 26 lshown clearly in Fig.

11 in a direction parallel to the axis of the wheel. The member 22 carrying the matrix vblock and matrices `is controlled as to its radial position by the annular cam groove 27 out in the stationary frame 19 through the `roller 28 mounted on a spindle 29 carried by the part 30 which is coupled by a pin 31 to the Apart 32 which is in turn connected to the member .22. slot 33 in the part 32 so that the parts 30 and 32 are relatively movable within limits and a spring 34 yis interposed between the two parts 30 and so that motion derived from 4.the cam groove 27 is under certain conditions as will hereafter .appear transmitted through this spring 34E. The curvature of the cam 27 is such kthat after the casting operation has been completed and the matrices lhave moved .clear of the ycast types the matrices are carried radially .until the eXtr-udi-ng ngers 35 are enti-rely clear of the mold bodyythe types still lying in .the mold cavities and when this position has -been reached the mold is by reason .of the cooperation .of the .roller 36 with ythe mold cam groove 37 out in the stationary frame 19 carried tothe extreme yopen .position shown in the upper half of Fig. 3. The-.curvature'ofithefcam .path 27 now causes the matrix block carrier 22 and 'the matrices .to move @back slightly toward the casting position so aste bring the extruding 'fingers 35 behind the types as shown in the upper half `of Fig. -3 and the exact position is controlled by a stop or ledge 38 the spring 34C `serving to com-pensate for any lirregularity of the cam movement. The mold cam path 37 now causes the mold `.to move back to the The pin 31 passes through a casting yposition and simultaneously the roller 39 upon the end of the receiving platform t0 ycooperates with the vplatform controlling cam yplate 41 cut in the stationary frame 19 and causes the platform 40 to follow the mold. As the mold body moves back the types in the mold come into contact with the stationary extruding fingers 35 and the types are thus transferred to the platform l0 as will be readily understood. The `mold now moves to the casting position again, the platform lcam-41 causes the platform 410 to move `back with the types upon it out of the way of the Amatrices, the lcam path 127 returns the matrices into alinement with the molds7 the cam 18 presses the matrices into the casting position and the cam 211 applies the final closing pressure to the mold cover plate 11 and .the ycasting operation is repeated.

The correct alinementof the matrices relative 4.to the mold 1 can :be determined by the blocks 42 and :spring 34: again Vserving to absorb Aany irregularity 4in the movement. The cast types resting upon the platform L10 are carried around until 'the stationary platform 43 is reached when they Nare transferred to this stationary platform. The man-ner in which the transfer is ,effected w-il-l -k types.

be. readily understood upon reference f t0 Figs. 9 vand 10. It will be seenl that the platform` has grooves` at either `side formed by the L-shaped blocks44 and when the stationary; platform 43 ,is reached the end 44EL passes beneath the types between `the L-shaped blocks 44 and as the wheely continues its rotation the types are left `upon the stationary platform.` i i `f i After the types have been completely withdrawn from the molds the mold wheel still continues rotatingand the types are carried around until they pass on to thetop of the stationary tangential platform 43 Figs. :9 and 10 upon which they are deposited as the mold wheel continues its revolutions.

In Figs. 7 and 8 I have shown the arrangement of `platformiand type "whenthe type are cast with breaks.

- As the mold wheel continues to rotate the types 85 come into position `over a bifurcated platform4 S6 shown in Figs. 7 and 8 and the types `are left` upon this platform one of the furcations` of which engages the character, and the other the breaks ofthe The succeeding deposits uponf `this platform cause the types in position to be pushed along in the manner before described `in relation to Jthe platform 43.

The types deposited in the foregoing manner` either upon the platform 43 or theplatform 86 may be transferred to a magazine chute 87 and this transfer can be effected by providing the end of the platform with a pivoted part`88 as shown in Fig. 4 and prow viding means `whereby this platform is moved `about its hinge 89 from time to time to cause the types 90 upon it to be tipped into the chute 87. The method however which I prefer to adopt is illustrated in Fig.

` 4a. According to this arrangement each successive mold deposits its types upon the platform 43 or 86, the type from onevmold pushing the type in front of it farther along. It will be clear that there are periodswhen no types are being transferred and the types on the platform remain stationary during this period. This period is utilized to transfer some of the type from the platform, this operation being effected in the following manner: At the end of the platform a member 91 of polygonal cross-section is mounted and one of the faces of this member always forms a continuation ofthe platform. This member 91 is rotatable upon the axle 92 which carries a fixed cam 93. This cam 93 operates against the ends of a number of spring catches 94, one for each surface of the member, and isso arranged that as any surface of the member moves into position to form an extension of the platform the catch 94 associated with this surface rises up in front of the type as shown. During the period when no types are being deposited upon the platform the member 91 is caused to turn sothat the surface supporting the types'is tilted and another `surface moves intoposition` forming an extension of the platform. Simultaneously Vthe one of the catchesv94'which was projected in front .4

of their break pieces are now separate and .passdown the partitioned chute 87. Of coursewhere the types are cast without break piecesy as in the machine shown in Figs. 1-3 the separate types pass direct to a magazine or platform.

Fig. 5 shows diagrammatically how types may be simultaneously cast at the two positions97l and 98 of the mold wheel and the cast types'itransferred to platforms 99 and 100 running tangentially 0n either side of I the wheel.

What I claim `and desire to secure by Letters Patent is:

l. In type casting machines a continuously rotating mold wheel, type molds carried inthe `periphery of the mold wheel., a

casting spout, an annular mold member interposed between thev type molds and the casting spout, means for causing the cast types to be extruded from the mold cavities, a platform tangential to the mold wheel upon which the extruded types are deposited as the mold wheel' rotates and an inclinable extremity to said platform and means for inclining said extremity to Cause said types to be delivered substantially as specified. 1

\ 2. In type casting machines a continuously rotating mold wheel, type molds carried in the periphery of the mold wheel, a casting spout, an annular mold member interposed between the type molds and the casting spout, means for causing the cast types to be extruded from the mold cavities, and a platform tangential to the mold wheel, upon which the extruded types are deposited as the mold wheel rotates, an extremity of polygonal cross-section for said platform so arranged that the faces o'f the extremity form the end of the platform and means for rotating the extremity and discharging the types substantially as specified.

3. In type casting machines a continuously rotating mold wheel, type molds carried in the periphery of the mold wheel, a casting spout, an annular mold member interposed between the type molds and the casting spout, means for causing the cast types to be extruded from the mold cavities, a platform tangential to the mold wheel upon which lthe rextruded types are ydeposited as the moldk wheel rotates, an extremity of polygonal cross-section for said platform so f riphery of said mold wheel, a casting spout,

an annular mold member interposed between the casting spout andthe type molds, :means for opening the molds after the types have been cast, eXtruding fingers adapted to enter the mold cavities, means for positioning the extruding fingers behind the types in the vmolds and means whereby the molds' move relatively to the fingers and cause said iingers to eXtrude the types, a reciprocating platform upon which the types are yextruded and a stationary platform tangential tothe mold wheel to which the types on .the recip- .rocating platform are transferred substantially as specified.

5. In type casting machines, a continuously rotating mold wheel, type molds ycarried by the mold wheel, a 'casting spout, a mold member interposed between the type molds and the casting spout, means for closing the molds and adjusting the matrices, movable nick forming protrusions located within the molds during casting and `means for causing said nick yforming protrusions automatically to move out of the molds Ito permit the cast types to be extruded substantially as specified.

6. In type casting machines, a mold wheel,

type molds arranged in groups carried'in the periphery of the mold wheel, mold cover plates common to all the molds in a group,

a casting spout, an 'annular mold member Yinterposed between fthe castingl spout and the type` molds, amatrix carrier, and means for moving the molds, cover plates and matriX .carrier intor and out of -the casting position as 'the moldwheelrotates substantially vas specified.

` 7. In 'type casting machines, a continuously rotatingmold wheel, type molds carried in the periphery of said wheel, a casting spout fork delivering type metal to said molds, and' an annular mold member interposed between'the casting spout and lthe type lmolds in wiping engagement with the spout whereby. the effective length of the type proper is not affected vby wear.

v8. In type casting machines, a continuously rotating moldwheel, ktype moldscarried in the periphery 0f saidvwheel, a casting yspout .forv delivering type metal 'to said molds, andan ,annular mold member inten posed between the casting spout andthe type molds in wiping `engagement with the spout "whereby the keective length of the type proper-is lnotfafeeted by wear, said annnlar moldmember beingrotatable with said wheel. E s 9. In, type castingy machines, a continuously rotating mold wheel, type molds parallel withthe axis and carried in the peo SHANKER ABAJJ; Binsnr. f

Copies ofv this patent may be obtained for five cents eachfby addressing 4the Commissioner ofy Patents,

` Washington, DJG.

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