US1630094A - Slug-casting machine - Google Patents

Description

May 27.

' l. T. REMAS SLUG CASTING MACHINE Filed Jan. 19, 1926 2 Sheet, t 1

. 1,630 094 May 1927' i. T. REMAS SLUG CASTING MACHINE Filed Jan. 19, 1926 2 Sheets-Sheet 2 i Mum m lllh which they 1 started.

Patented May 24, l927.

' D STATES 1.6 .094, P TE T OFFICE- ISIDORE T. REMAS, on woonnavnn, NEW Yon-K, assreavoa '10 MERGENTI-IALER LIND- i i TYPE COMPANY, A conroimrron or new YORK.

sLUe-cAs'rINe ivraonnvn.

which their characters are to appear in print,

' and then assembled in line, the composed line transferred to the t'ace ot a mold, the

10 mold filled with molten metal to form a, slug or linoty'peagainst the matr-iceswhich pro duce the type characters thereon, and the matrices thereafter returned through distributing mechanism to themagazine from In this classot' machines, the molds are carried by a wheel or. qdisc' rotatably mounted on a slide commonly known as the mold slide, which is advanced from the rear before each casting 0 operation to press the active moldagainst the composed line 0t matrices at the front. Usuallynthe advance of theslide isimmediatelyfollowed by the advance of the melting po-t, which bringsits mouth-piece tight- 1 5 1y up against the back of the mold prepar atory to the descent of the pump plunger and 'the casting of the slug; It, has" been i found in practice that flakes or tins of type metal frequently formv upon the mouth-piece 00i the pot, and; if allowed'to accumulate, result in imperfect lock-'ups, back squirts, etc. i v The present invention is directed to an automatic wiper of improved form, which is operated after each casting operation to Morefspecifically.the Wiper is operated from] the main drive shaft of-the machine, being secured to a rock shaft whichisturned first positivelyyin one direction and then/positively in the'oth'er by, a projection on the mold disc rotating gear wheel through suit able connections to, be described in detail later on.

In the accompanying, drawings, I have shown my invention only in preferred form I and. by wayof exampleand asapplied to a linoty'pe nachine, but obviously .many' not wish to limit myself to anyspecific form is clamped securelyat A npon one end of a rock shaft B. the latter being loosely keep thelpot mouthpiece clean andifree of ApplicationfiledJ'anuarylfi, 1926. Serial No. 82,196. i

changes and alterations may bemade there in and in its mode of operation without departure, from ,its spirit. Generally speak; mg, I desire it to be understood that I do or. embodiment, except in so far as such limitations are specified in'the appended claims,

Referring to the drawings:

Fig. 1 is a perspective view of the improved wiper, its operating mechanism and associated parts; v y Fig. ".2 a detail side view of the wiper operating cam, and a portion of the gear wheel to which it is secured;

I Fig 3 is-a detail vertical section through the wiper blade'and its operating arm;

Fig. 4 is a vertical section, showing the means for turning. the rock'shaft in opposite directions; c Y 7 F 5 Yis a plan view of the parts shown in Fig.4; i Fig. 6 is a vertical section, taken on line 6 -6of Fig. 5; and V I Fig. 7 isaverticalsectional.view, showin thefrelative vpositions ot'the mold disc and H mouthpiece in normal and casting positions.

As shown in Fig. l, the wiper blade A is" secured ,byscrews a within thebifurcated end of a curved supporting arm A, which mounted in suitable bearing brackets G, C

so as to be rotatable in oppositedirections i to swing the wiper blade A from. its normal position above the melting pot D downward across the. mouthpiece D, and back againafter each casting operation. "A wip ing pad A attached to the rear face of the blade is in this way caused to sweep twice across thetace of the mouthpiece and remove any fins or flakes of metal which may have adhered thereto from a previous casting operation. In the commerical machines, the

mouthpiece I) normally stands beneathfor within the flanged portion G. of the mold disc G or in juxtaposition to the back of the mold G (see dotted lines in Fig. 7), so that the only time whenthe relative position of jsaidparts is such that the face of the mouthpiece may be reached by a wiper in the manner desired is after the pot D has receded, but before the mold disc hasbeen retracted from casting positionv (see full y 7 lines in Fig.7). Furthermore, in these ma- 1m chines, the recession of the pot is followed almost in'iniediately by the retraction of the disc and, consequently, the downward and upward movements of the wiper must necessarily be effected within the time limit allowed in order to avoid being caught between said parts. 't is therefore proposed, according to the present invention. not only to swing the wiper A downwardly across the mouthpiece by a positive action, but also to return it to its original position by a positive action. 1

To this end, means, controlled from the main shaft E. are provided for rocking the shaft B positively in opposite. directions. As best shown in Figs. 1, t and 5, a lever B is pivoted to the bearing bracket C and is loosely connected between its ends. as by a pin and slot arrangement B. to a yoke member B secured to the rock shaft B. The lever B extends beneath the shaft B and is formed at its free end with a flat portion B, which is so arranged that. when the shaft is turned in aclockwise direction, it will be rocked upwardly by the yoke B" into the path of an inclined rib f of a cam plate F. This cam plate (Figs. 1, 2 and 4) is fastened to the side of the mold disc rotating gear wheel E rigidly mounted. on the main shaft- E and normally rotated in the direction indicated by the arrows. A collar B loose on the rock shaft B, is provided on its periphery with an adjustable stud B and on its rear face with a fixed pin B. the latter projecting into a circumferential recess B formed in a sleeve B keyed to the rock shaft. The recess B is of sufficient extent to permit a certain amount of relative movement between the collar B and shaft Bffor reasons later to appear. The stud Pf is formed with a rounded anti-friction head B which (as shown in Figs. 1 and 4-) is normally disposed in the path of the rib f of cam plate F.

According to the foregoing arrangement, the stud B will be first engaged by the inclined rib f of the cam plate F. as the wheel E is rotated, and through the pin B and sleeve B turn the rock shaft B clockwise, the lever B at the same time being swung upwardly through its connection with the yoke B into the path of the rib f (see dotted lines. Fig. 4). At this point in the operation, itwill he noted that the rib f is about to ride over the stud head B and engage the lever end portion B As the rotation of the cam E continues, the lever B will be depressed to its original full-line position and through the yoke B turn the shaft B in the opposite or anti-clockwise direct-ion, the rib f clearing the portion B as indicated by the dotted lines at the lower part of Fig. 4. i The rock shaft B is thus operated positively in both directions in imparting the to-and-fro movements to the wiper blade AQthe extent of movement of the blade being readily determined by the position of the stud B and lever l'l in relation to the cam plate F.

In order to prevent possible ovcrtl'irow of the rock shaft B when it is turned in one direction by the lever 13. as well as to obviate the sudden contact between the end of said lever and the stud lr" when the shaft completes its stroke in the opposite direction. there is provided a that s iring brake or detent B anchored to the lived bracket U and bearing down upon a second collar 13 secured to the shaft B. This: collar (as clearly indicated in Fig. (i) is formed on its peripheral edge with two ribs or tm'rgucs B adapted to alternately engage a ornspondii'ig groove in the under side of the detent I as the shaft is rocl d from one bosition to the other. The detent also serves to hold the wiper blade yieldingly in its normal raised position as shown in Fig. 1.

It may happen that. after the cam plate F has passed the stud b and de ressed the lever B, some almormal operation of the machine will necessitate a backing up or reversal of the main shaft E. In such case. the relative movement of the collar B to the shaft B. as permitted by the recess B. allows the ram plate F to pass the stud B without interfering therewith.

Since the space a 'ailable between the mold disc G and the pot mouthpiece l) is very lin'iited, as may be observed by reference to Fig. 7. the wiper blade A is made comparatively thin and hence. without further support, might be subject to bending or facewise displacement such as to impair its parallel relation to the face of the mouthpiece. Means are therefore provided for guiding the wiper in its reciprocalions to insure the proper frictional engagement of its wiping pad A" with the front face of the mouthpiece D at all times. Accordinirlv. the wiper blade A is formed near its free end with an upwardly curved guiding pol"- tion A having its inner edge A concentric with the axis of the rock shaft; ii. A guiding stud J, projecting rcarvvardly from a fixed part of the machine to a point flush with the front face of said portion i: also provided and arranged to restrain the blade against facewise displacement in a forward direction. The blade is likewis restrained against facewise displacement n a rearward direction by the head of a shouldered screw J threaded into the end of the stud J. In other words. the. relation of the parts such that an annular groove :rl' fordcd to contain the inner edge A." of the guiding portion A".

Having thus described my invention. its construction and mode of operation. what I claim and desire to secure by Letters Pat ent of the United States. is as follows:

Inn

lli i 1.111 a slug casting machine, the combienation'ofa melting pot'having' a mouthpiece, a 'wiper blade arranged to swing back and forth across the face of themouthpiece,

guiding means to support the blade I against lateral displacement during its movements,

- and Imeans for imparting the to-and-fro movements to the wiper blade.

2. In "a slug casting machine, the combr nation of the main shaft, a cam rig1dly connected to said shaft, a-melting pot having a mouthp1ece, a wlper blade arranged tomove back and forth across the face ofthe mouthpiece, I and means actuated by the rigidly connected cam of thejmain shaft for moving the blade positively: in both directions.

3.111 a slug-casting machine, the combination of the main shaft,.a melting pot having a mouthpiece,awiper blade arranged to swing back and forth across the face of the mouthpiece, guiding meansto support the blade against lateral displacement during its movements,and means controlled from the mainshaft for swinging the blade to and fro. 'g-

. L'Ina slug casting machine, the combination ofthe main "shaft, a cam rigidly connectedto saidshaft, a melting pothavmg a mouthpiece, awiper blade for the mouthpiece,a rock shaftwhereon the blade is fixedly mounted, and means actuated by the rigidly connected cam of the main shaft for turning the rock shaft positively in bothdirections to swing the wiper-blade backand forth across the face of the mouthpiece.

5. In a slug casting machine, the combi nation of the'main shaft, a cam rigidly con nected to said 'shaftga meltingpot having a mouthpiece, a wiper blade for the mouthp1ece,a rock sha-ftwhereon'the blade isjl'ix edly'mounted, and means actuated the rigidly connected cam of the main shaftfor turning the rock shaft positively in both directions to" swing the wiper bladeback and forthacross the face of the mouthpiece, said means being arranged to permit the backing up of the main shaft when desired. e

6. In a slug casting machine, the combi- Ination of] the main'shaft, a melting pot having a mouthpiece, a wiper bladefor the mouthpiece,la rockshaft whereon the'blade is fixedly mounted, means controlled from the main shaftfor turning, the rock shaft in- 'both directions to move the wiper blade back and forth across thefaceof the mouthynece,

and yielding means for restraining the blade against overthrow movement and for holding it in inactivepositionp p 7.111 a slug casting machine, the combination of a melting pot having a mouthpiece,,a wiper blade for.theflmouthpiece, a

rock shaft whereon the bladeis fixedly mounted, a rotary operating'member having a cam projection thereon, and means con nected to the rock shaft and operable-"by scribed.

said projection l to turn the shaft first positively in one directionand then positively in the other directionto swing the 'bladeback and'forth across the face of the mouthpiece.

8.-I'n a slug casting machine, the combination of a pot mouthpiece wiper blade, .a rotary operating memberya rock shaft upon .whicl tlie wiper blade is mounted,'a cam PI'OJGCUOII secured to the operating member,

a stud protruding from the shaft and arranged in the path of said projection wheremounted on and operatively connected to the rock shaft, a stud protruding from the collar, and a rotary wheel provided with a cam projection adapt-edto engage first the stud and then the free end of the lever inthe rotation ofthe wheel. I

10. Ina slug casting machine, the combination of the wiper blade A and its operating arm A, the rockshaft B to which the arm A is secured, the yoke B fast to the rock'shaft, the pivoted lever B connected as at B to the yoke B and provided with the end portion 13*, the collar B loose on the rock shaft and provided with the radially protruding stud B and the laterally projecting; pin B the collar B fast to the rock] shaft and formed with the circumferential recess 13 m which the pin B engages, and

the rotary wheel E provided with the cam plate]? with its inclined rib '7, all substantially asshown and described.

11. In a slug casting machine, the combination of the wiper blade A and its operatingarinA, the rock shaft B to which the arm A" is secured, the'yolre B fast to the rock shaft, the pivoted lever B connected as at B to the yoke B and provided with the end portion Bathe collar B loose on the rock shaft and provided with the ral .diallyprotruding stud B and the laterally projecting pin B, the collarB fast to the rock shaft and formed with the circumferential recess B in which the pin B engages, a collar B also fast to the rock shaft and formed'with the locking ribs B, the spring detent B formed with a notch to engage the ribs B and the rotary wheel E' provided withthecam plate F with its inclined.

rib flaa'll substantially as shown and de- '12. In a slugcastingmachine, the combinatlon 0f the vibratory wiper -blade A Cal formed with the curved guiding portion A, and the grooved collar J with which the guiding portion A is operatively engaged.

13. In a slug casting machine. the combination of a swinging pot mouthpiece wiper blade, 21 rock shaft on which the wiper blade is mounted at one end, means for turning the rock shaft in opposite directions to swing the wiper blade to and fro, and guiding means engaged with the free end of the wiper blade to support it against, lateral displacement in its swingingmovements.

14. In a slug casting machine, the combination of a melting pot having a mouth piece. a wiper blade arranged to move back and forth across the face of the mouthpiece, two sets of devices operatively connected to said wiper blade, the devices of one 1; .t being act-uatable to move the blade positively in one direction, and the devices of the other set being actuat'able to move the blade positively in the opposite direction, and positivelv acting means arranged to engage and actuate the two said sets of devices one after the other in rapid succession in in'iparting the to and fro movement to the wiper blade.

15. In a slugcasting machine, the combination of a melting pot having a mouthpiece. a wiper blade for the ll'lOtltlll'JlGCQ. a rock shaft wheicon the blade is fixedly mounted, two sets of devices operatively connected to said rock shaft. the devices of one set being; actuatable to turn the shaftpositivclv in one direction and the devices of the other set being actuatahle to turn the shaft positively in the opposite direction, and positively acting means arranged to engl ae'e and actuate the two Said sets oi. devices one after the other in rapid succession in causing the wiper blade to swing back and forth across the face of the mouthpiece. in testimony whereof, l. have aflixed my signature hereto.

ISIDORE T. HEMAS.

Images