US1146736A - Apparatus for molding. - Google Patents

Description

C. G. ROBINSON.

APPARATUS FOR MOLDING.

APPLICATION FILED APR.2, m2.

1,l%6,736n Patented July 13, 1915.

2 SHEETS-SHEET l- WITNESSES w dim a W I xggagg COLUMBIA PLANOGRAPH 50., wAsHlNu'r0N, D. c-

C. G. ROBINSON.

APPARATUS FOR MOLDING.

APPLICATION FILED APR.2,1912.

1,146,736. Patented July 13, 1915.

2 SHEETS-SHEET 2- WITNESSES COLUMBIA PLANOGRAPH co.,w,\s!1ma'roN. D4 c CHARLES GQRO BINSON, 0F LEXVISTOWN, PENNSYLVANIA.

AE'PARATUS FOR Momma.

To all whom it may concern:

Be it known that 1, CHARLES G. ROBIN- SON, a citizen of the United States, residing at Lewistown, in the county offMifllin and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Molding, of which improvementthe follow ing is a specification.

My invention relates to improvements in the art of molding and in apparatus applicable thereto.

The invention is particularlyapplicable to the molding of truck and body bolsters; it is, however, applicable'to the production of all classes of castings.

The object of my invention is (to produce a method andapparatusapplicable to the production of castings and particularly to the production of truck and body bolsters, whereby time and labor are minimized and large tonnage produced, and to this purpose my invention consists in the novel steps and operations hereinafter set forth..

In carrying out or practising my improved method I use the apparatus hereinafter more specifically described, reference being had to the accompanying drawings forming parthereof, in whichi a Figure 1 is'a plan view of a portion of my improved apparatus. Fig. 2 is an enlarged detail of one of'thepartsthereof. Fig. 3 is a side elevation of theapparatus. In carrying out the method the cope 1 and drag 2 of the flask used are placed upon a match plate?) on Which'the pattern 4: has been secured. The flask is preferably hinged, i. e. the cope is hingedto theidrag; "Placing the. cope and drag onfthematch plate upon which the pattern is secured enables the ramming of the mold at one ioperation. The method may be described as consisting of the following distinct steps or operations: First, placing on the match plate'the hinged flask, z. e. the cope 1 and drag Q'which'are supported on the stationary support which in this form of apparatus comprises a bar or plate 6-6 arranged on each side 0f the frame 7 longitudinally thereof,-the match plate being wider thanithe frame. The match plate with the flask thereonisfcan ,ried forwardby the endless conveyerB until the same is brought to the ramming device 9 which is indirect alinement with the sand bin 10 from which the required amount of sand is automatically dumped or fed into the Specification of Letters Patent.

Patented any is, 1915.

Application filed April 2, 1912. Serial No. 687,976.

flask. is used but I prefer to grind all the sand used in this apparatus. After the'flask has been rammed and thoroughlytamped by the ramming machine and bumped, a bottom plate 11 is put on the drag half of the flask and securely bolted thereon. Any usual jarring machine may be used. After the mold has been rammed and bumped as here'- inbefore described, it is carried forward to the device 12, which reverses the flask, 2'. e. reverses the match plate so as to bring it to the upper side of the flask. The reversing mechanism employed consists of a receptacle 13 having compartments 14-15 longitudinally thereof in each side, the said receptacle. being mounted upon a centrally disposed shaft 16, whereby when the flask is inserted in one of said compartments as shown in Fig. 3 and the shaft rotated automatically or manually, the flask is reversed, a. 6. turned upside down. After this operation the flask is removed from the compartment of said receptacle and carried by the conveyer toward and upon the table ofthe stripping machine 17. This machine automatically takes hold of the match plate and attaches to opposite corners thereof a vibrator whereby the match plate and patterns securedthereon are removed from the mold,

. air being used'to accomplish this operation.

After the withdrawal of-the patterns we have a complete mold which by the action of the conveyer is carried forward, the match plate being suspended in the stripping machine as shown in Fig.3. The mold is carried forward to the conventional form of finishing table (not shown) where the cores are inserted and any necessary hand work performed, after which the flask is carried forward, the cope half thereof having rollers 18 which engage upon the inclines 19 and cause the same to swing on its hinged connection as the drag half of the flask is being carried forward horizontally as shown in Fig. 2.

The cope rides on the rollers thereof until it arrives at the apex of the incline, in so doing engaging against a guide or stop trig ger 20 which being forced forward causes the roller totravel up through the guide 21 until it arrives into the vertical passage therein upon which the trigger is returned to its normal position. ,The continued for= ward movement of'the drag then causes the It is immaterial what kind of sand complete reversal-ofSthe cope portion of the flask thereby closingthe same, after which the cope and drag are bolted in the usual manner and are in position-for pouring which may be performed at thispoint o-fthe operation or the flask may be removed to a pouring floor.

The conveyer is provided With dogs Which engage the rear edge of the match plate or flask whereby the same is moved for- Ward.

In practising my invention, I preferably permit the casting to remain in the drag until icooled as this not only prevents the casting from becoming crooked While cooling, "but also takes care of shrinkage.

The advantages of my invention and its capacity to produce large itonnagein .a minimum of time will be obvious "toithose skilled in the art.

The conveyor may either have continuoils or an intermittent movement, accordingfto thes'kill of the operators, and with thepresent constructionthe different operati'ons "would be manually performed, although it "would be entirely Within the scope of rthe invention to provide automatic means for actuating :the different devices do pertorm'the various steps. i

-Havingdescribed my invention, what I claim "and desire to secure by Letters Pat ent is:- a r -=1. tin-1a device of 'the :character 1 described, the combination of a (conveyer, a match plateupon the conveyer, said match :plate being rprovide'dviith a pattern, a fiask'comprising hinged :cope and 'drag 'sectionswhich rest 'upon-"the matchvplate, :means ifor rfilling the :fiask sections with sand and itamping "the same in position, means "for inverting the flask sections aip on the iconveyer, means for removing :the match plate, and means for swinging one flask section over :upon the opposite flask section.

"2. Ina device of'the character described, the combination ofza conveyer, aunatch plate upon ithe conveyer, said match plate being provided 'With a pattern, a fla sk comprising complemented sections vvhi'ch rest upon the match plate, :means L fer lfilling ithe flask sections 'with sand and tamping 'the same in position, aneans' for 1 inverting the flask sectlOIIS upon it'he conveyer and removing ithe :match plate therefrom, and :means'forPbrmging'ithe tvvo complementa'l flflSk sectionstogether into operative M position.

In a device *of the .character .idescribed,

ithe icombinaition of :a :conveyer, a match plate ELIPOII ithe' conveyer, comp'lemental sections match :plate, means :for filling *the :flask sections with sand :and itampin'g :the m i :position therein, i a swinging reversin frame :a: flask com-prising which rest upon 'the provided with arpocket arranged in t lle pa'th ofthe flask sections and match plate to :re-

"the conveyer in an inverted "position, means for removing the match plate, and means for bringing the flask sections together in operative relation.

4. In a device of the character described, the combination of a conveyer, a match plate upon the conveyer, said match plate being provided Witha pattern, a \flasklcomprising "hinged cope and idrag sections Which rest'upon the match plate, means for filling the flask sectionswith sand and'tamping the vsamein position therein, a swinging reversing xframe provided with a :pocket arranged in the path of the flask sections and match plate to receive the same, said reversing ftra'me serving to dl ft the flask sections and :match plate itrom the conveyer and again deposit the same upon ith'econveyer in an iinvertedposition, means for removing the matchg-plate: from the flask: sections,-.-and cam actuated means for automatically swinging one flask sectionover uponitheopposi'te fiask section. I I

5. In a device oifl the character described, the combinationoi a conveyer, aimatch plate uponithe conveyer, esaid match plate being provided t with a" pattern, a flask icom prising hinged cope and drag sections which :rest upon -1' the match rplate, means 'for :filling the flask sections with sand and htamping the same in position itherein, means for inverting the flask sections upont'the conveyer, :means :for removing the ini-atchzplate 'ifiI'OIIl rthevflask sections, a :guid'eimember-projecting ffrom one of the flask sectionsyan-dla cam -;surface arrangediinithe path of the said guidejzmemher for "coiiperation ltherewithrto :svvging one of the fiask 'sections over upon fiask 'section.

6.;"Inradevice of the character'described, the combination of conveyer, amatch plate resting'upnn the'conveyer an'drprovidedavith a pattern, a flask '1 comprising hinged cope and drag sectionsiwhichrrest uponzthe ima'tch plate, *zmeans. ifor filling ithe flask :sections with rsandan'd :tamping theisame in :position therein, :means for inverting the 'flaskrseo itions supon the rconveyer, means 'dr'or v:removingmhewmatch plate therefrom, a guide-"member mp rejecting from one -of theiflask sections, a i'dozublef inclined roam surtace arranged :in the wpathaof the guideimember, andwa trigger at the :apexxof the double :incl-ined cam sur- *fa'ce, :the:said f-double inclined cam surface and trigger. cooperatingwithivthe 'guidememher to automatically 1 :swingwne :of the eflask sections over iuponrthe-oppo'site flask section.

"/7. A device of #the 2 character describeid, in-clitding a FCOIIVQZYGI' a iflask :carriediby :the conveyor i and comprising hinged sections, a guide member projecting -from :one of the 1 ask sections, and i a roam :surface arranged 2105 sthe opposite in the path of the guide member for automatically swinging the said flask section over upon the opposite flask section.

8. In a device of the character described, the combination of a conveyer, a flask mounted upon the conveyer and comprising a pair of hinged complemental sections, a guide member projecting from one of the flask sections a double inclined cam surface arranged in the path of the guide member, and switch means at the apex of the double inclined surface for cooperation with the double inclined surface and guide member upon the flask section for swinging the said flask section over upon the opposite flask section.

9. A device of the character described including a conveyer, a flask mounted upon the conveyer and comprising a pair of hinged sections, a guide member projecting from one of the flask sections, a double inclined surface arranged in the path of the guide member, a vertical guideway over the apex of the double inclined surface, a swinging trigger at theapex of the double inclined surface for directing the guide member between the vertical guideway and the opposite sides of the double inclined surface, said double inclined surface and swinging trigger serving to cooperate with the guide member upon the flask section to automatically swing the said flask section over upon the opposite flask section. I

10. In a device of the character described, the combination of a conveyer, a series of flasksupon the conveyer, each of the flasks comprising hingedly connected drag and cope sections, a match plate for each of the flasks, said match plates carrying patterns and having the respective flasks placed thereon, means for charging the flasks with sand as they are advanced by the conveyer, means for tamping the same within the flasks, reversing mechanism adapted to successively act upon the flasks to invert the same upon the conveyer, a stripping device adapted to act successively upon the flasks to remove the match plates and patterns therefrom, and a device comprising an incline and cooperating guide to swing the cope sections of the flasks upon the drag sections of the flasks, substantially as set forth.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing Witnesses.

CHARLES G. ROBINSON.

In the presence of E. W. HOLLINGER, RHonA R. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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