US377006A

US377006A - Sand-molding apparatus

Info

Publication number: US377006A
Authority: US
Publication date: 1888-01-31
Anticipated expiration: 1905-01-31

Description

Patented. Jam.V 31, l1.888.

J.. ADAMS.

,II/III N. PETERS, PhMo-mhagnpher, wuhingmn, ma

(No Model.)-A

UNITED STATES s JAnvis ADAMS, E PiTTsBUEG, PENNSYLVANIA.

SAND-MOLDING `APPARATUS.

SPECIFICATION forming part of LettersPtent No. 377,006, dated January 31 188.8.

Application liled March 31,'1187. I Serial No. 233.099. (No model.) Y

To al whom it my concern.'

Beit known that I, S. JARvIs ADAMS, of Pittsburg,in the county of Allegheny and State of Pennsylvania, have invented a new and useful 'Improvement in Sand-Molding Apparatus; and I do hereby declare `the. following to be a full, clear, and exact description thereof.

' medium of a rod or bar extending within the iiask,which rod or bar may be connected With any suitable mechanism for applying the pressl ure to the mold.V Y v To this end my invention consists,generally, in the combination of a flask, a pattern or. patterns and pattern-block, a packingplate, arod,

. or like device extending within the flask, and

power connections engaging said rod and adapted, through said rod,..to impart the compressing forcc to the sand within the ask and compact it around the pattern. y

It also consists in certain improvements in the construction of the apparatus for support-- ing the parts andr arranging the iiask and its connections'for applying the compressing force to the sand contained therein; .f

To enable others skilled in the art to make and use my invention, I will describe the same more' fully, referring to the accompanying drawings, in whichg Figure'l is a longitudinal central section of one form of my improved apparatus, showing the invention Wherer the ilask, pattern, and pattern block or plates are moved,the packing-plate vbeing held stationary. Fig. 2 is a view of the same apparatus, showing the po- "sition ofthe parts at the end of the movement of the apparatus in forming the mold. Fig.

3 is a view of my improved apparatus where the flask and packing-plate remain stationary v f the'patternand pattern-plate are moved to andX compact the sand Within the flask. Fig. 4 is a V like View showing -the position of the parts when the mold is formed., Fig. 5 isa` like y"packing-plate is moved to compress the sand within the iiask; andFig.v 6 shows my'invenrtion applied'to another formof mold.

Like letters of reference indicate likeparts in each of the lign-res. l .Y i The most approved form of myin'vention is illustrated in Figs. 1 and 2, the flask arresting means ot' which -th`e compressing force is ap plied, extends `up through the pattern and above the flask. Y Resting upon the upper endilask proper in forming the mold, andttin'g within the upper part of' this reservoir-is the 'packingpla'te f, this packing-plate havinga central 'opening through which the power-rod d' extends.

the rod g, which may be drawn up .by any suitable power mechanislmthat illustrated in g forming the piston-rod thereof, though any suitable means forjdrawing up the rod'g may be employed. The form of connection between the rod d and the rod g shown" consists of av sleeve, s, fitting over'the end of the rod d and same, this key being adapt'ed'fto pass through a suitable seat,d, in the upper end of the rod d.

In order to hold thepacking-plate f stationary during4 the compressing operation, `I pro`- out in such lpositionthat when the flask is placed under the power-rod g the lugs Z on the arms Z will engage the plate. f and prevent its rising. v

Inv this construction ofapparatus the operaf tion is as follows: The ask a is placed, upon thepattern-plate b, the rod d extending `up iilask and reservoir lled with sand'. `v The upon thepattern plate or block l). to which the,l pattern o' is secured, while the rod or bar d, by

the drawingsbeing a cylinder, g',`and the rod.

through the'flask. The reservoir e is then placed on the upper end of the ask, and the view ofthe apparatus Wherethe iiask,.the pattern, and its plate are held stationary and the ofthe ask agis the reservoir e, to provide a f sufficient amount of sand -topress intothey This rod d has a suitable connecting device, by means of whchit is secured to having a wedge-key, s', passing through the vide on the operating-table It the standards k, having arms Z, provided with lugs lZ on kthe a f under surface thereof, these arms extending IOO packingplatef isthen placed over the rod d, its edges fitting into the reservoir e, and the illed flask is then slipped under the powerrodg in such position that the lugs Z ot' the arms extend down and bear upon or iit closely to the packing-platef. The rod d is then connected to the power-rod g, and this rod g is drawn up, the rod at the same time lifting the ilask, the reservoir, the pattern-plate, and the pattern, while the packing-platefis held from rising by the arms l, the sand within the flask being thus compressed and caused to pack closely and evenly around the pattern, and the packing plate being forced down until its lower edge is about even with the lower edge of the reservoir e. When this compressing operation is finished, the flask is lowered down onto the operatingtable h and the rod cl disconnected from the rod g. The reservoir and the packing-plate are then removed, and the pattern, with its rod d, withdrawn from thev mold, and the mold is finished ready to receive its core or cores, according to the shape of the articles to be cast.

In Fig. 3 is shown the operation of the=ap paratus where the ilask., reservoir, and packing-plate are held stationary, and in this case the reservoir e is placed upon the operatingtable, the pattern-plate b carrying the pattern c, and the rod d resting also on the table, and the pattern-plate fitting within the reservoir. The flask a isthen placed upon the reservoir and the packing-platefplaced upon the flask and around the rod d, the packing-plate in this case extending over the ilask instead of fitting within it, as shown in Fig. l. Before placing the packing-plate upon the flask, the flask and reservoir are filled with sand, and the apparatus is then placed under the powerrod g, the arms Z on the standards kextending over the packing-plate 'tr/,though in this case the lugs Z on the said arms are not required. The rod d is then connected to the bar g, and

, the bar g drawn up, as above described, and

the pattern and its pattern-plate are drawn up with the bar, the patterxrplate sliding within the reservoir e and forcing the sand up into the flask proper, so causing it to' be uniformly compacted around the pattern. The apparatus is then disconnected from the bar g, the pattern lowered, the reservoir removed, and the flask lifted off the pattern, thus forming the mold ready to receive the core.

In the apparatus shown in Fig. 5 the packing-plate and the rod d only are movable, the rod d sliding through the pattern or its plate,

which rests upon the table h, and an opening being formed in the table h to permit the passage of this rod. The flask a is placed upon the pattern-plate and the reservoir upon the upper end ot' the flask, and the sand is filled within the ilask and reservoir. The packingplatefis then placed in position over the rod d,'which has a suitable keyway, m, above the plate, through which a key, m', may be driven, so securing the packing-plateto the rod, and the bar g, which, with its power apparatus, is

down the required distance and the sand properlycompaeted around the'pattern, asis shown in dotted lines, the rod d is disconnected from the bar g, the key m driven out, the packingplate and reservoir lifted olif, and the flask lifted otf the pattern, or the pattern out of the flask, .as may be desired, leaving the finished mold ready to receive the core.

In Fig. 6 my invention is illustrated in connection with apparatus for forming a nest of molds within the single tlaskVand in this case theinvention is illustrated where the apparatus is employed Yin the same manner as that shown in Fig. 1, differing onlyin that the rod g. from which the power for compactiug the mold is obtained, instead ot passing up through one of the patterns, as in the other figures shown, leads directly up from the pattern-plate, (this bein'gdesirable wherea nestofmolds is formed,`) and that the rod d may be disconnected from the patteru-plateand withdrawn by the power apparatus, the parts operating in the same man ner as that described in Fig. 1, and in forming molds in two-part -flasks the apparatus may be operatedin this manner, forming a half'mold in one flask and another half-mold in another ilask, and the two be placed together, as is well known in the art. The reservoir e may in some casesbe dispensed with, though it is generallyconsidered desirable to employ it, as it holds a body of sand proper to compress the sand withoutforminga depression in the flask. This depression is not, however, objectiona ble in all cases, because the depression may either be filled with a drag in certain classes of work or with a suitable bottom board; or where separate cope-prints are formed for each mold a seat is thus provided for the core, and in such cases it is only requisite that the flask be made slightly longer in order to hold a su f iicient body of sand for compacting.

In forming molds by my improved apparatus the power is applied to compact 'the sand through the medium of a rod passing through the flask and connected either to the pattern or to its pattern block or plate, and all that is necessary is to have some means for drawing this rod in such manner as to compact the sand within the flask and around the pattern, this` power being applied to the flask in any of the ways described, and acting in either case to form a perfect mold, and one which can he made by those who are unskilled in the formation of molds, while at the same time the complicated machinery heretofore considered necessary in forming molds by pressing appara tus is entirely done away with.

What I claim as my invention, and desire to secure by Letters Patent, is

l. In apparatus for forming sand molds by compression, the combination of the flask, a

A pattern-plate closing one end of said flask and IIO armoe4v v 7 s earryinga pattern therein, a packing-plate in-l closing the other end, a rod or like device exi tending within the laskand attached to one of said-plates, and power-connections engaging said rod to compress the sand Within the Iiask, f

substantially as and for the purpose set forth. 2. In apparatus for forming sand molds by compression, the combination of a liask, a pattern and its pattern-block, a packingplate, a rod or like device extending Within the ask and attached to said patternor pattern-block. and power-connections engaging said rod and adapted through said rod to impartthe compressing force to the sand Within'the iask, substantiallyfas and for the purpose set forth.

3. In apparatus for forming sand molds by compression, the combination of a flask, the pattern and itsy pattern-block, a reservoir, va packing-plate, a rod or like device extending Within the flask and attached to said pattern or patternblock,-and powerconnections engaging said rod and adaptedthrough said rod to impart the compressing force vto the sand I within'the ask, substantially as and for the.

purpose set forth. 4 1^ I4.. In apparatus for formingsand molds by compression, the combination of the pattern plate or blockcarrying the. pattern and having the red or like device extending through l,

the opposite end of t-'he'fiask" andv secured to said pattern andpatternblock, the fiask rest-- ingon the patternfplate and the packing-plate litting Within the askor its reservoir,`stand and `for the purpose set forth.

, In testimony whereof L'h@ Said S- JARVIS l' l y* ADAMS, have hereunto s'et'my hand.

Y j l s l JARVIS ADAMs.

Witnesses: v

` JAMES I. KA'Y,

J. NEGLEY COOKE.y