USRE9573E - St a tw - Google Patents

Description

V 2 Sheets-Sheet 1.

S. J. ADAMS,

Mold'ing Apparatus.

Reiss'ued Feb. 15,1881.

'liZQ f 1/. W MM WWW? UNITED STATES jATE-NT ,OFFICE.

ARVIS ADAMS, OF PITTSBURG, PENNSYLVANIA.

Momma APPARATUS.

vSit-Z31G.(FIIiAZY'IQ1"? forming; part of Rois-sued. Letters Patent N 0. 9,573, dated February 15, 1881.

Original No. "235,193. gintod December T, 1880. Application for reissue filed January 10, 1881.

To all ii /tom it may concern a. face View of the some.

Be it known that LS. JARVis ADAMS, of

Pitts'ourm in thsoonntvofAilev-iienvand by "I O .ol .Lennsylvinne, have invented certain new andnsefnl liinproveinentsin Molding Appear ms; l I o hereby i'isoiare that the fil0W- s n amend oxnctrloscription thereof,

. oreno'e being had to theeooompon; rig drewiii. "s, and tothe letters of reference marked thereon, Whioh form a part of this specifics-- tioo, in Whioh-- Figure l is a side'riew of the apparatus omployod in practicing my invention. Fig. 2 is F2 3 illustrates the method of packing the sand. Figs. 4 and 5 are views oi the rewiring pattern. Fig. 6

"trams omploveil where tho mohi below. 7 and are ioyeri the mold is 1 audit) show the pattern empioyeti Where the is :iormod from the side. Fig. 11 is e :of the hoilow pattern.

rs of reference indicate like parts lastly, in other improvements in the oonstrnotion of the cutters and the apparatus em ployod in carrying out my invention.

enable others skilled in the art-to practice my invention, 1 will describe it more fully.

My invention is, illustrated as applied in ferent Ways in the several figures, the revoiving patterns being illustrated as entering the sand from above, beloiv as in Fi 6, and at the side, as in F g" 9. In Figs. land 2 the rewiring patterns are mounted above the'flask and ada ted to or.

ball mohls, and when out awn-y the'sai-nd. Book of im'pnrts to the ,faoe, polishin the knives.

as in" Figs. 1 and 2; from i drawn down, so est-o form the mold therein. 7

The apparatus is supported on a suite-lilo standard or support, A, provided with two or penetrate the send and more horizontal arms or plates a a, in which the perpendicular shof ts B, carrying the rotatingor revolting patterns there mounteththe shafts passing through bearings [U or supportetl by the arms or plates a a. The revolving patterns are generally arranged in a. nestheingis'eo'ured'to the base of one of the shafts B extending up'throngh the plates a a.

r The patterns are madofcorresponfling in shape to the article to be cast, the patterns say of sign patterns, as shown-each pattern shown beingsnitod for the formation oi--pipeontering' the sand from above are formed hoiioir, so that the son-1 can pass into the potter-n :is it cuts its Way Into the body of sand.

The pattern is provided with knives or ontters l) atoll points whoro it has to ont into the sand in forming the mold, there being the enteringhnii'e (Z at the base and tho knits d above'to :lorin the oorepring'the.onrveitignito d -to form the nerve or taper at the base of the mold, and the knives or on'tters d and d? to form the oopeprint at the top of the. mold,

the knife d serving to out out pression, and the knife d" to tnpenofl' thesicles thereof. In front of each knit'e'is'an opening, Q, leading into the interior of the p'attermthe sand out oii' by the knives passing; through the cops-(lethese openings into the hollow pattern. The L surface of the pat tsri in front of tho knives is slightly rednoeti and curves off into the openings 6, as at q,toenable the knives to pattern is lnzrlo fnll siie or slightly enlarged to form 2'. sli'oker'or smoother, as at f, which smooth and even surging. irregularity lo'l't by 1 is perponriieninr, or teen-1y ashore neoessnrnomi the htlylerger in iii in.

the kni theextending across the hollow iuterior to which brace a rod, 6*, is rigidly attached, and, ex-

' tending up frdm the center of the pattern, is

screwed or otherwise removablyseeured at the base of the shaft 13. t

' ,The shafts B have a lougitu'diual as well as,

other'springs g, confined between the upper horizontal plate, a, and tops b? of the shafts, by means of which the patterns'are held up clearoi' the course of the flask when not in use,

and. retracted after forming a mold.

Near the base of the shaft are arranged'suitable handles 6, fordrawing the nest otrevolviug patterns down to form the molds.

A rotary motion is imparted'to the shafts-B carrying the patterns by means of pulleys H,

supported on the horizontal frame IL, extending from the standard A and keyed in longitudinal slots in the'shut'ts, so as to permit the shafts to slide through thcmwhen the pat terns are drawn down, as above described. The pulleys are rotated by belting extending from any suitable power-eonnections.

I prefer to have the sand in whichthe molds are formed packed inlong flasks, as less time is consumed in feeding to the patterns, and as the sand is packed solid flasks of about twenty feet in length can be employed to advantage. The flasks can be ralnnned, jarred, or packed in any known manner, and as no patterns are 'used in the flasks'a more solidly and uniformly packed bodyot' sand can be obtained. The most rapid and efficient method of packing the long flasks that l have-found is byrolling, as

shown. The flask K is placed on a suitable carer carriage, 7c, and this car brought under aheavyrollcr, L. The roller is either mounted and rotatedin stationary housings and the flask passed back and forth under'in'while the sand is gradually fed thereto until it is packed full of'sand,.or the flask is'held stationary and the roller passed back and forth overitas the sand isfed thereto.

Acrossthe face of the roller L is formcd'tne recess Z, which'extends a suflicient distance intothe roller'toallow the end' boards of the flask to fit therein, forming ihecorners or edges 6- along the recess, which fit close into the corners of the flask and packthe sand therein. ter that one revolution will be made as it passes from one end of the flask to the other, the recess l fitting over one end board, and upon the rotation of the roller fitting over the opposite end board, as shown in dotted lines. I am by this meansenahlcd to pack the'saudunii'o'rmly and tightly, not only in the body of the flask, but in the ends thereof. x

The packed flask K is brought under the re- The roller L- is made of such'diam'eyolving patterns either on a stationary table or by means of the car ,or carriage 7a, the latter being preferred where long flasks are used, as the flask can be moved along after one-set of tire length of the flask. In forming. molds by described, where the patterns are drawn down from above to out the molds in solid sand, the patterns are rotated at a speed of about two hundred revolutions per minute through the the mechanism above I molds are made until they are formed the en.

pulleys.H. The flask containing the solid 1 -body of packed sand is then brought under the patterns and the patterns drawn down by the handles i until they come in contact with the sand.

farther the core-print cutters d d penetrate or out their way into the sand which is forced into the hollow, pattern through the openings e, and asthe pattern advances the curved cutter d at the base of the mold-patternenlarges thecavity formed by thd entering cutter, the

tool thus i'orcing its way through the body of the sand until the whole mold and its copeprint are formed. As the pattern advances into the sand the slickersf back of the knives or cutters smooth over the. sand and impart to the mold a sin 00th and almost polished surface by the rapid revolution of the pattern. The mold is also further polished, wherever the sides are perpendicular, or nearly so, by the! smooth surface of the pattern, as at c,

and the rapid revolution of the patterninsures a true cylindrical form to the mold. The sand removed passes through the openings 0 into the hollow pattern, and can be'rcmoved ter the pattern is raised from the mold, by an endless chain and buckets ,ah air-blast, oi other. suitable means. It is not necessary that hollow patterns be used for raising the sand, as separate apparatus, such as a worm, maybe employed for that purpose.

As'the patternus revolving rapidly when withdrawn from the mold it will not drag on the sides thereof, as is usual in the old styles As the patterns are drawn down therefrom during the process of cutting, or afof molding, and hence israised without injury to the mold aud fort-his reason my'improved method is especially adapted for the formation of long perpendicularcylindrical molds.

The longitudinal movement of the patterns is regulated by thexs'to'ps b I], and the patterns ase'raised clear of the moldsjby the springs After the formation of one set of molds in the flask it is moved alonguntil fresh sand is brought under the patterns, and the process continued by successive cuts until theflask is filled with molds, the one set of patterns serving to form all the molds necessary, and, on

account of the rapidity of the process, acco'm plishing at'least five times the amount of work capable of being accomplished by any other process. The molds thus formed are of true cylindrical shape, perfect in surface and correspondence with the pattern used, and are in no Way marred in the withdrawal .of the pattern.

In Fig. 6 my invention is illustrated wherethe pattern enters the solid sand from below. The pattern is mounted in substantially the same manner as shown in Figs. 1 and 2, and

is arranged to be raised and lowered througha circular opening, on, in the table M. It is raised by a spring and lowered by suitable lever mechanism N, the handle a of which exand is carried, by the trough or inclined \vay' m, into a suitable receptacle.

The knives or cutters Dare formed along the edges of the flat pattern, and back of these knives are formed the slickersffor smoothing and polishing themold, as above described.

The knives and slickers may be adjustable on the flat pattern to 'form different sizes of molds, as shown ats, Fig. 8.

The flask containing the body of packed sand is placed on the table M, eithe'r face down ward or havingsuitable openings in the removable bottom board of the flask, through which the cutters work in forming the molds.

In Fig. 9 my invention is illustrated where the pattern enters the mold at the side. The pattern extends through the opening min the table M, and is rotated in this position, it not being necessary for it to be raised and lowered through the table.

Two'h alt-flasks, K K filled with solid packed sand, are arranged to slide on the table in suitable guides 19, on the sides thereof, and a stop or stops, r, checks the movement of the halfflasks when they come to the center of the pattern. The two flasks are moved along the guides 12 against the revolving pattern, which cuts the mold in the solid sand, one-halt being thus formed in each half-flask, and the halftlasks are then removed and securedtogether in the'usu al way, thus forming the complete mold.

Th-eknives l) are arranged on the sides of the pattern so as to cutinto the sand when the packed flasks are broughtagainst it. The sand removed falls through the opening m, as above described. The pattern can thus be adapted to form molds for articles having rings or. enlargements, as the half-flasks are fed sidewise f0 and withdrawn in the same manner from the revolving pattern.

The patterns can be made to correspond to the different articles to be cast, knives or cuting-edges, with their accompanying slickers, being placed wherever it is necessary for the pattern to cut its way into the sand, as illustrated in the ditt'erent patterns shown, and by this means any cylindrical mold can be formed in the solid sand where the sides of the mold are perpendicular or tapering, as well as molds having rings or enlargements where half-flasks areused. g,

By the movement of the flask along the table, or of the revolving pattern along the top of the flask, elongated molds ot' the shape of the revolving pattern can also be formed.

When the apparatus is mounted in a movable frame the sand may be rolled or otherwise packed on the casting-floor, and the apparatus moved along to form the moldsin the sand so packed.

When long flasks are employed they can be placed oncars and brought directly under the cupola-discharge, and the melted metal poured directly from the cupola into the mold, thus doing away with the heavy labor of carrying the metal.

What I claim as my invention, and desireto secure by Letters Patent, is- I 1. A revolving pattern adapted to form molds in a solid body of sand, provided with. one or more knives or cutters where it cutsits way into the. sand, and a slicker back of each cutter, substantially as and for the purposes set forth.

2. A revolving pattern adapted to form molds of an irregular shape in a solid body of sand, provided with an entering-cutter to penetrate and form a cavityin the sand, and one or more cutters above the entering-cutter to enlarge the cavity so formed, snbstantiailyas do scribed.

' 3. A revolving pattern adapted to form molds in a solid body of sand, provided with one or more knives or cutters,l), and a smooth polishing-surface, asat c, where the pattern is perpendicular, or nearly so, substantially as andfor the purposes set forth.

4. A hollow revolving pattern for forming molds in sand, provided with one or more knives or cutters for removing the sand, and.

- corresponding openings for the passage of the sand into'the hollow described.

5. A hollow revolving pattern for forming molds in sand, provided with one or more outters, D, corresponding openings 0, for the passage of the sand into the pattern, and stickers f, back of the cutters, substantially as and for the purposes set forth.

(3. The heavy roller L, for packing sand in flasks, provided with the recess Z, extending across its face, substantially as and for the purposes sct forth.

in testimony that I claim the foregoing I have hereunto set my hand this lath day of January, 188i.

pattern, substantially as s. JARVIS. semis.

Witnesses:

James I. KAY, F. G. KAY.

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