US1151229A - Molding apparatus for ingot-molds. - Google Patents

Description

1; WALKER. MOLDING MPARATUS FOR [NGOT MOLDS.

v APPLICATION FILED FEB. 22, 1915. 1,151,229. Patented Aug. 24,1915.

1 2 SHEETS-SHEET! Jam 5. WALKER J. B. WALKER.

MOLDING APPARATUS FOR INGOT MOLDS.

,APPLICATIONHLEDAFEB-27.71915. u

Patented Aug. 24, 1915.

2 SHEETS-SHEET 2.

2 JOHN D. WALKER h d F JOHN B. WALKER, 0 B1 RMINGHAM, ALABAMA.

MOLDING APPARATUS FOR INGOT-MOLDS.

Application filed February 27, 1915.

' molds and molds for like hollow articles.

my invention is tov provide an apparatus by means ot which The main object of the manufacture of ingot molds may be materially cheapened and the number of operations so reduced that the molds can be produced rapidly and without skilled labor.

My molding apparatus is peculiarly adapted for use on a jarring machine but many of its advantages of construction will apply to the hand ramming of both core and cheek as is the present practice.

One object of my invention is to adapt both the core and cheek to be rammed at the same time on a jarring machine and to so design and assemble the parts that they will retain perfect alinement and not become loose when subjectedto the jar anrl.,,sh n%k of the machine during the ramming operation and that they can be readily lifted apart by a crane and reassembled thereby into perfect alinement after the removal of the pattern. v

By my invention I am enabled to draw away the core box and flask from the core and mold respectively with a single operation for-each withdrawal, thus materially reducing the labor cost in the manufacture of ingot molds.

A. further object of my invention is to make the core box and flask of such design and in so few parts that their maintenance is reduced to a minimum, their operation is simple, and much wear as compared with the presenttypesof' core boxes and flasks, being eliminated, their length of usefulness is materially extended.

A further novel feature of my invention relates to the stool which serves as a drag for the core and flask and is adapted to be removed from the jarring table so that the flask and core after being baked and prepared for molding can be assembled and poured on the same stool and drag on which they are rammed.

Other novel features of my invention re Specification of Letters Patent.

Patented Aug. 2 .1.. wild.

Serial No. 10,988.

late to the construction of the flask in horizontally divided half sections which are so connected that they will separate when lifted apart; to the provision of gates in the flask sect-ion disposed opposite and below the position of the core molds for the ingot mold ears to give access into the flask to break the sand below the ears to facilitate the removal of the casting; and to the construction of a core box for use when the core is rammed separately from the flask and which is adapted to be centered on my combined stool and drag by the centering means for the flask.

My invention further comprises the novel details of construction and arrangement of parts which in their preferred embodiment only are hereinafter more particularly described and claimed, reference being had to the accompanying drawings which form a part of this specification, and in which Figure 1 is a vertical sectional elevation of the flask and core assembled on the stool drag for joint ramming, taken on the lines y y of Fig. Fig. 2 is a side ele ation of the same parts being lifted off the jarring table after the completion of the ramming operation. Fig. 3 is a partial horizontal sectional--v-ie\\ .taken on the line of Fig. 2. Fig. 4 shows the coreb'ox construction assembled on the stool drag for ramming the core separately from the cheek. Fig. 5 is a side elevation of Fig. 4 and illustrates the manner in which the core box is detachedfrom the core by a single lifting operation. Figs. 6 and 7 show back and ver-. tical sectional views of the removable flask gate. 1

Similar reference numerals refer to similar parts throughout the drawings.

On the jarring table 1 of any suitable jarring machine l seat a stool 2 having side openings provided therein to permit an elongated wedge key 3 to be inserted from side to side laterally therethrough and through a slot in the reduced lower end of the 'core plunger l, which projects. through a central opening in the top plate 5 of the stool, which plate forms. the drag for the molding apparatus, being provided with a recess 6 in which is formed a sand mold that will protect the stool proper from the molten metal. This drag plate 5 is provided with a plurality of vent openings 7 under the core and is shaped in plan to conform substantially to the cross section of the flask whieh is Formed in two horizontal half sections h. The marginal edge ot' the drag plate 3 at several points is notehed at '3 and is provided with marginal dowel pin holes 10 on opposite sides. The lower flask section 8 is provided with a bottom flange ll \vliieh earries stl'il('t! dowel pins 12 adapted to engage in the holes 10 and renter and de t-iehably hold the llaslt on thedrag. ()h viously the dowel pins may he earried by either ineniher. The fla h seetions 8 at their meeting edges are provided with flanges 13 and one o'l these flanges. preferably the upper. earries vertieal dowel pins ll adapted to enter holes in the other flange and (enter the llask seetions. llaeh flask section 8 is also provided with a pair oi trunnions 15, the trnnnions being; prelerably all arranged. in the same vertieal plane. and with a plurality of vent ports 16 to vent the cheek. The core. plunger -l is adapted to expand or eontraet a eollapsihle (ore 17, similar to that shown in my Letters Patent No. 997.027, and I lorlc the core plates in their expanded position by means of a top plate 18 and a wedge key 19 therefor driven through the plunger 4. The lower end of the plunger is.

drawn down by the wedge key 3 into rigid einrageinent with the stool drag The operation of the double process. for ranuning both cheek and core is as follows: The stool drag is seated on the jarring tahle, the core plunger is passed down therethrough and keyed thereto. after which a pattern ll is dropped about the core and upon the drag plate 5. A stripping plate 20 having marginal openings \vhieh -rcaegister with the i'lpenings 10 in the drag plate 5 is then passed down over the mold and seated on drag plate 5. The lower flask member 8 is then lowered onto the stripping plate 20 with the dowel pins 12 entering openings 10 and eentering it thereon with the flaslt stripping plate and stool in alinement. The upper tlask section is then picked up by the crane and lowered upon the lower flask section, the dowel pins 14 serving to center it thereon in reference both to the lower flask seetion and the stool. 'l hareafter the Wedge key 3' is driven fully in to expand the core 17 and rlamps 22 are then applied in the notehes 9 in the drag plate to hold the stripping plate 9.0 to the lower flask and clamps 23 are applied to fasten the flask to the drag plate. and stool. The ramming operation then proeeeds without it being neeessary to rigidly eonneet the stool to the jarring table or to rigidly z-onneet the flask sections 8 together. WVlnan the. jarring" operation is eomplete the erane is lowered. and, by means of eahle loops 1H- i'lllfillt lflltd from its hook 25 and passed over the trunnions 1.5, the whole flash and stool are lifted off of jarring table. and eonvel'ed to the drying; pits where the e anips 23 are knot-lied loose and the tion.

In Figs. 'land 5 I show my in'iproved type of stool drag adapted foruse in forming rores where it is desired to rani'only the core, as for instant-e where the ingot molds are to he east in ehills or lor :llljQUtlief reason it is desired to rain the flash i'qiaratelv from the core. l'nder these etmditions I provide a core hox formed of two similar half sections 26 which form vertical half seetions of the. ho and are provilhal at their lower ends with wide base flanges '27 which are adapted to rest upon the drag plate 5. These flanges carry dowel pins 28 which engage in the dowel pin holes 10 in the drag plate Alongtheir vertical meeting edges the box sections are provided with flanges 29 and they are strengt-henedhy horizontal reinforcing ribs 30. The flanges 29 are adapted to he iernianently (miner-ted by bolts 31. it being my intention to so manipulate the box that it is not neces to separate its sections in the eore molding operation. Opposite the bolt holes for the bolts 31 the slmulders 29 are provided with rapping lugs 32 which form a. circular boss adapted to he struck hy the hammer orirons to clean the hex. At its upper end each section :26 is provided with a perfo ated lu 33 through which a cable loop 34ers passed: and these loops are adapted to he passed over the crane hool-I; when it is desired to raise the box after the ramming to strip the eore, as seen in Fig. 5 the upwardly tapering eharaeter of the box and its vertical dowel pins permitting the box to be lifted off the drag without requiring the disconnection of any parts. By this arrangement the flask or chill will also have vertical doivel pins by which it can be lowered onto the drag plate 5 and brought into true alinement with the core by having its. dowel pins enga 'e in the same holes which received the dowel pin .28 of the core box.

The advantage of dividing the flaskin hall sections on a horizontal plate. is that the sections can be readily assembled for vertical manipulation by the crane and they possess the full strength of an integral flask in resisting the- XDn.!1Sl '-.-'Q. fame: of the sand.

under he in where facilitates the operation to ram the lower half flask firstand then set on the upper section {and ram it.

A feature of my invention which is of flange or projection 86 disposed above and in position to prevent the sand from packing hard about a revoluble latch 37 having a handle 38 therefor which projects beyond theouter face of the gate. At its end opposite the latch the gate is provided with a lug or flan e 39 adapted to engage the upper edge 0 the opening while the latch engages the lower edge and holds the gate firmly in position during the ramming operation. At the conclusion of this operation and after pouring the mold the gates are access is given removed, and through the door openings to the sand below the ear mold on the ingot mold. This sand can then be easily broken down and loosened so that the mold will free itself easily from the section can be lifted off from it without trouble. I may provide these door openings in all of the flask sections or only in those to be used opposite the lug or car on the mold.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:. i

1.. Incombi'nation, a jarring table, a stool supported drag resting on said table free of fixed connection. thereto, a core" detachably connected to said stool, a flash seated on the stool, means to center the flask relatively to the core, clamps to detachably connect the flask and stool. and a stripping plate detachably connected to the flask.

2. In an apparatus for molding ingot molds, a stool supported drag, a flask mounted on the drag, centering devices for drag and flask which permit them to freely disengage when parted vertically, a stripping plate, and means to detachably connect it to the flask for joint removal therewith from the drag.

3.. In an apparatus for forming molds for sand and the flask ingot molds by the jarring process, a jarring pendent clamps a stool forming the drag mount-ed free of fixed connection, a coilapsible core having its I arbor passing through the stool, wedge means to connectthe arbor and stool, a stripping plate mounted on the stool, a flask mounted on the stripping plate, means to center both tlasl; and stripping plate on said drag, and indeto hold the parts together, one set of clamps connecting the flash and stripping plate, and the other set connecting; the flask and stool drag.

table, thereon to the marginal edges a this}; section' l. In an apparatus for molding ingotmolds, in combination, a drag, a flask, a stripping plate for the flask which drag, said stripping plate having its marginal edge interposed between and adjacent of the drag and flask, clamp means to connect the flask and. drag, and independent means to detachably connect the flask and stripping plate.

5. in. an apparatus for molding ingot molds, a'drag and a flask having bottom flanges, astripping'plate for the cheek ing itsmarginal edges adjacent to the flaskfiange edges, a marginal flange on the drag which is provided with notches, and clamps to engage the dash and stripping'plate opposite said notches, and other clamps to engage the flfiilgfisfii flask and drag.

6. In an apparatus for forming n olds for ingot molds on a jarring machine, in com binationpa combination stool and draghaving a cent-er hole and marginal dowel pin holes, a collapsible core comprising a vertically movable plunger having a shoulder near its lower end, which end is adapted to pass through said center hole in thedrag, a wedge key to engage said plunger below the drag and draw its shoulder. rigidly against said drag, laterally movable side plates for the core, means operable by the plunger to force said plates outwardly when it is drawn downwardly, a top plate to engage the upends ofthe core plates, a wedge engaging the plunger latter against the core plates, a flask, clamps and dowel pins to connect the flash and drag. and ineanson both flask and core plunger for engagement with means to lift them vertically.

*2. In an apparatus for forming molds for ingot molds, a stool and drag, a. collapsible core, means to tie the core to the drag, a pattern surrounding the core and seated on the drag, a dash, astripping plate connected to the iiasl: and adapted to seat on the drag about the pattern, and means to lock the dash. stripping plate and pattern against lateral movement on the drag while leaving them free for vertical disengagement therefrom, substantially as described.

8. In an apparatus for molding ingot molds, a combination stool and drag .for both core and check, a collapsible core, means to mount the core centrally of the drag, a core .box ing a wide base flange, and centering means For the core hon disposed at the margin of is mounted on thetor forming the core hav lie tit-2- hill? verti al guide pins, a drag and stool, a pattern in-the dra" and vertical uide pins to center flask and drag, detachable clamps to hold flask and drag together after ramming operation, and means on the flask for engagement with overhead lifting apparatus to strip flask and cheek vertically oil the pattern after disengaging the clamps.

11., In an apparatus for molding ingot molds, a core box divided'into vertical half sections, means to permanently connect said sections, means for engagement with lift- 111g, apparatus whereby the core he); can he moved vertically to strip the core, and rapping lugs provided at the engaging edges of the loOX sections, suhstantiallyas described. 12, In an apparatus for molding ingot molds having 'ast ears thereon, a flask adapted to he raised to strip it from the casing; and having clean out side doors therein disposed in position to give access to on their inner faces and flange means which lock it in position on the flask, a flange to overhang the latch means and prevent the sand packing about and locking the latch, and an external means to throw the latches.

In testimony whereof I aflix my signature in presence of two Witnesses.

. JOHN B. \VALKER.

Witnesses N OMIE WELsiI, W. S. SCALL.

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