US1281946A - Casting apparatus. - Google Patents

Description

P. H; GRIFFIN.

CASTING APPARATUS.

APPLICATION FILED APR.27. ISH-'4. HENEWED IIJNE I7. 1918- 1,281,946. @gamma (m1519155. A

f 7 E J Ff l I I 3 'g C, g /A A C2 E4 AEF-5' @E24 C k- PATRICK HENRY GRIFFIN, 0F NEW YORK,

, H. VAUGHAN, 0F MONT N. Y., AssIGNoR or ONRFOURTH To HENRY REAL, QUEBEC, CANADA.

CASTING APPARATUS.

Application led April 27, 1914, SeriaINo. 834,762. Renewed .Tune

To all whom z'zf may concern: v

Be it known that I, PATRICK HENRY GRIF- FIN, a citizen of the United States of erica, residing in the city of New York, State of New York, United States of erica, have invented certain new and useful Improvements' in Casting Apparatus; and I do hereby declare that the following is a full, clear, and exact description of the same. l

In the practice heretofore and now carried on for the manufacture of cast iron car wheels and other products made lin foundries, a serious disadvantage results from the fact that the operation is carried on in more or less crude manner, and subject to the variations in section and mechanical conditionsfo'f the product and to ycertain imperfections and kdefects that arise from vthe means andmaterials used and the apparatus in vogue. 4Another disadvantage arises from the lack of proper control of the cooling of the different parts offsuch castings and from undue shrinkage strains, cracks and other defects that develop from such lack of control. v Y

Another disadvantage results from the fact that labor andl supervision properly skilled in the art of preparing car Vwheel lds and carrying on the operation in all stages,- jis difficult to obtain and that Athe whole. order of the operation has fallen into a low and dangerous state for that reason. Toobviate these and other disadvantages and to'reliably improve the quality of the product is the object of this inventionwhich consists of new' and'y improved method and means of doing the work, simplifying the same and mak'ng it possible forV anyone possessed of ordinary mechanical skill-to assembleA the various partsv of the apparatus andto make and prepare certain parts of the same as required, and to complete theoperation with greater certainty of ucts of a -highand uniform and mechanical' conditions. y

My invention consists of a casting apparatus consisting of members that'replace thev members Vor parts of the flask or mold used for' making car wheels and like castings as wellfas the kind of material used therein, replacingthem with new members and forms of materlalthat proved. results as described herein; and in order of quality the-construction,combination and particulari Specification of Letters Patent.

securing prod` insure more reliable and im-` 17, 191s. 'serial No. 240,526.

arrangement of and described. The of my invention. f

Whilek the essential principle of this invention is to provide the'new means and apparatus asherein described for the purpose stated, the product produced by such method and apparatus constitutes a new quality and type of car wheel' and'formsthe subjectmatter of a separate invention. f f

For full comprehension,however, of my invention reference must be had to the acmethodalso forms part companying drawings forming a part of this specification, inV which similar reference characters lndicate the same parts, .and wherein:

Figurel is a verticaldiametrical sectional Paeentedoct. 15,1918.

parts hereinafter illustrated view illustrating `'my improved casting app paratus;

Figs. 2 and 3 are similar sectional views of the means whereby the cores for'use in the casting apparatus are manufactured;

Fig. l is a similar sectional view of the casting apparatus partly dismembered as requiredV for cooling the cast article; and

Fig. 5 is a similar view illustrating the use of co-acting parts of the apparatus in connection with a cooling boX.

My improved apparatus comprises a chill consistingof two engaging members, a bottom plate member,VV an4 annular top plate outer periphery being recessed. The bottom plate' member B is of annular form having beveled periphery Band being of adiameter to lit within the chill D and rest upon the f flange D2-while the inner edge thereof has a beveled face B2 and its underside perforated lugs B3 the center ring b 'tting'within the bottom plate member B and having its periphery beveled as at b1- to rest upon the beveled face B2. The chill C is of cylindrical form and standssubstantially at right angles tothe chill member-D, one edge thereof being beveled as at C with which the vbeveled edge A ofthe-top plate member A engages and upon which it rests when the apparatus is being assembled'for a cast. This member, central annular bottom and top f' e2 in position. Grappling t Zontal position and .t tol retain top plate member is securedv in position by a series of Wedges g. A pouring headV a of tubular form is providedwith a beveled face a engaging a beveled the top plate member. This pouring head is secured in position by Wedges g2, g2 and lugs Gas vents 25 are provided in the top and bottom plate members A andB. These parte of theappa-ratus carry the cores which are previously manufactured from dry sand mixed with a suitable binder or ller to enablethesameto be handled Without damage. rlhese cores are usually of annular form and are indicated at e, e2, and e3 respectively and the pouringhead member of annular cross-section indicated at e4 and the center e5 are made from the same material.

The method' by which these cores are manufactured is Well-known to those skilled in the use of dry sand cores for molding.

rhe cores and matrixfaces of the chills are preferably formed to meet ,Master Car Builders requirements. Chaplets 7c and m are employedfor retaining the cores e2 and tongs of any approved construction are indicated at l)Al and a cooling box at H. rlhis cooling box is provided with a central opening H and beveled lugs H2 While the Wedges H3 are adapted to center the bottom plate member in the box which also has a vertical inclosing Wall H5.

My improved method is preferably as foloWs Y The chill D (see Fig. l) is placed in horithe plate B is placed in same. The latter centers itself by meansof the machine beveled faces D2 and B. The core c is placed in vposition upon the plate B as indicated in l, thevchaplets m serving both cores c and c3 in place.

rlhe center ring bivhich contains the dryl sand center eis placed in position as shown and centers itselfby means of the machine beveled faces B2 and rThe center ring core c3 is placed in position as shown and secured by the chaplets.

T he center core e5 is then located in position as shown in Fig. l.

The chill member C is inverted andthe plate A is placed inposition therein and centers itself by means of the machine beveled faces A and C. It is secured andheld in position firmly by th'ewvedges g.

The core e2is placed in the inverted top plate member A and secured bythe chaplets 7c, and the chill member C With membery and core e2 are then turned back.

The pouring head` a containing the drysand core e2 is then placedinj'position in the top plate member as lshown and centers itself by meansof themachinebeveled'faces a and A2. lt is secured in Lposition and'held rmly by the Wedges g2 placed under the lugs' y'.

rfhe parts() and l) are then closed together and form With'the other parts associface A2 presented by' top plate Laeneae ated With them as described, va complete mold or form for casting the molten metal into. They are secured together byclamps Vorordi-v nary devices of the kind and the metal is cast.

T he gases formed in the are"conducted freely from the apparatus or mold7 by means of the usual ventsl and openingsQ for same in plates A and -Y As soon as the molten metal inthe pouring head @has solidified suliiciently to admit of so doing the Wedges g2 and the pouring' head a are removed.

rlhe chaplet lc is disconnected from the process of casting f plate A and the latter With the chill Gare removed, thus exposingthe surface of Wheel tread and upper surface ofv flange.

The core e2 remains casting and protects it sired.

The center core e5 central opening or recess et, as shown, is driven through the opening in center'of plate B by striking it With aniron bar, theqfact that there is nothing f butI sandy to break through malringthe. removal an easy matter.v

A central openin: ';isY thus left inv thecastingv through which cold air desired and coolthe center'of from coolingfas decastirgrat the whichl is formed with 4a undisturbed onV the may circulate as f rate desired. By partly closin such'open-k inga if desired, the rate` of coo ing may be retarded.

After these steps of the yOperatioi-i have been carried out7 the plate B withV the cast` ing on same is rea-dy for removal to the cooling point. f 4

See Fig. A which shows the plate Y,Bwvith Wheel casting on same after the above described operations have been carried'outand before the Wheel is placed in the coolingapartwr Y of the apparatus.

Fig. 5. The plate B is lifted outv of the chill D bythe grappling Ytongs D2 or the re;V moval is accomplished-in any other convenient way, and the cooling boirisplaced under the plate B and the latter is lowered and centers itself in the cooling 'box' by;

means of the machine B3 and 1s secured Wedges' H3.

beveledflugs/l-l2 and`V in position'y by thev Dry sand orany other suitable lor *desi-rede insulating material is placed 'in the" space H4 between the tread and flange ofrcarwheel andwall ofthe box to retard coolingorcon' trolthesameat any desired rate'.U

After being allowed'to remain in thisibox for about twenty-fourA` hours the'cast'vvheel is ready for use 1Wha-t l claim is as-follows:-A

1. A castingapparatus-for casting.chilledV car Wheelsor the like comprising; ab'ottom plate and cores, afsupportmgfring' for said bottom plate for impartingform'toapart of the Wheelfiange, a pouring face/of the tread and a top A"plate supported c head, a' '-centerf ring. a chill ring for: impartingform tothe'v by the chill ring, said pouring head mem- Iber and center ring being in the top and bottom plates respectively and a center core movable Without injuring or disturbing the metal in the casting.

2. A casting apparatus for casting chilled car Wheels or the like comprising a bottom plate and cores, a supporting ring for said bottom plate and for imparting form to a portion of the Wheel flange, a ouring head, a center ring, a chill ring, or imparting form to a face of a Wheel tread and a top plate supported by the chill ring, and said pouring head member and center ring distinct from and tting in the top and bottom plates respectively and a center core removable Without injuring or disturbing the metal in the casting.

3. A casting apparatus consisting of two members or chills, annular plates, each of the said members or chills being adapted to receive one of the said annular plates, rings, said annular plates having central openings adapted to receive the saidy rings, cores, means securing said cores to the annular plates and rings, means permitting the removal of said cores and rings quickly after the molten metal solidies or partly solidies in part of such castings, for the purpose of permitting the quick control and regulation of temperature in the center or other parts of such castings without disturbing or injuring the metal in other parts or the casting as a Whole or losing control of the temperature of same, means effecting detachable connections between the parts of such apparatus.

4. In a casting apparatus the combina tion with annular top and bottom plate members of dish form, annular displaceable cores carried Within such members, an annular core carried by the bottom member and Copies of this patent may be obtained for ve cents each, by addressing the in iiXed relation With the core of the latter, a center ring engaging and supported by the bottom member, a tubular pouring head engaging and supported by the top member, a substantially fiat annular chill engaged by and supporting one edge of the bottom member, a substantially cylindrical chill engaging and supported by the said substan- .tially flat chill, and means securing the cores 1n position. y

5. In a casting apparatus the combination With annular members corresponding to the usual top and ybottom plate members, annular displaceable cores carried Within such members, an annular core carried by the bottom member and in fixed relation With the core in the latter, a ring, said annular core being engaged and supported by said ring which is engaged and supported by the bottom plate member, a tubular core, a tubular pouring head-ring engaging and supporting the tubular core, said head-ring being engaged and supported by the top plate member, a substantially cylindrical chill member engaged by and supporting one edge of the top plate member, a substantially Hat annular chill engaging and supporting the substantially cylindrical chill member, and means securing such members and cores in position and permitting the removal of all or parts of the same at will Without disturbance to or injury of other parts of the casting or article made and the control of the temperature in parts or in all of such castings or articles.

In testimony whereof I have signed my name to this specification in the presence of two Witnesses.

PATRICK HENRY GRIFFIN.

Witnesses:

E. R. Barre, WILLIAM J. C. HnWnTsoN.

Commissioner of Patents,

Washington, D. C.

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