US1203619A - Casting apparatus. - Google Patents

Description

H. H.;HEWETT. CASTING APPARATUS. APPLICATION FILE!) {28.13. 1912.

Patented Nov. 7, 1916.

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4 SHEETSSHEET 2.

H. H. HEWITT.

CASTING APPARATUS.

APPLICATION FILED FEB. I3. 1912.

Patented Nov. 7, 1916.

4 SHEETS-SHEET 3- H. H. HEWITT CASTING APPARATUS, APPucA'mu man FEB, 13. m2.

Patented Nov. 7, 1916.

4 SHEETS-SHEET 4 p1 ddma zg I D STATEs PATENT are.

nunnnn'r H. HE ITT, or Bureau ew Yuan.

CASTIlfTG APPARATUS.

Specification of Letters Patent.

Patented Nov. a, rare.

hpplicationfiled February 13, 1912. Serial No. 677,357.

To all whom may concern Beit known that I, HERBERT H. Huwrr'r,

a citizen of the United States, and a resident f of the city of Bufialo, in the county of Erie and State of New York, have invented cer tain new and useful Improvements in Casting Apparatus, of which I do declare the showing partly in horizontal scription;

following tovbe a full, clear, and exactdereference being had to the accompanying drawings, forming part of this specification. 9

y My present invention has for its object to provide an improved construction of'cast- 'ing apparatus which, while susceptible of use inthe casting of a variety of articles, is particularly adapted for the casting of chilled car wheels.

The invention consistsin the features of novelty hereinafter described, illustrated in the accompanying larly pointed'out n the several claims at the end of this specification.-

Figur '1. s a v ew 1n central vertical section through a casting apparatus embodying my invention. Fig. 2 is a central vertical section taken at right angles toFig. 1, b1, it

the parts in the position which they occupy when the, molds arecompletely opened and the finished casting is to be re; -'moved. Fig. 3 is a view partly "in plan and section on line 33 of Fig. 2. Fig. 1 is a view in horizontal section on line 4+4 of Fig. 2.

Upon a suitable foundation 10 rests the base plate 11 from the four corners of which rise the standards or posts 12. As shown, the lower ends 'of the standards 12 pass through the base plate andare secured thereto by means of nuts13 that engage the reduced and threaded lower ends of the standards. The base plate 11 is preferably a casting, the upper face of which is formed with ribs to give it the desired strength and centrally from the base plate rises the cylinder 15 that is bypreferencefformed integral therewith. To the top off the cylinder 15 is. bolted the cylinder head-'16 through which passes .a piston rod 17,}that carries atits lower end a suitable piston 18. To the lower end of the cylinder 15'Qleadgs a i'iiuidpressure pipe 19 and to the tel of the cylinder 15 leads a fluid 'pressuie'ifprpe 20; Thee fluid 1 ted t the casing 21, of th'e ithree way valve-with,

pressure pipes 19 a1 :20 are conne passed through ing opening 12 of the top plate,

lower iface lS of the top 'mold-section is" outline'neccssary to giyethe tio'ns, three of which are tapped with threaded holes to receive bolts. The flanged portion of the gland 27 is of triangular shape and throughthis flanged portion of 1 the gland 27 pass threaded bolts 28 that engage correspondingly threaded holes in the boss 25 of the cylinder head 16. Within the remaining holes-of the boss 25 are placed drawingsv and particustops 30 that are designed their adjustment to limit with exactness the downward movement of a central support. or plunger,

will presently more fully appear. In order to retain the stops 30 in their set position, pointed. screws 31 are preferably threaded holes in the side wallsof the upstanding portions of the boss 25 opposite the stops 3 0.

The upper ends of the corner postsor standards 12 pass through the lateral openings in the top plate Q0 and are held in secure engagement with the top plate by means of caps {l-l'that are bolted to the cor- Ii -hrs of the top plate .110, as at d1, suitable nuts an being attached to thethreaded 11pper ends or the posts 12. The top plate 10 is"preferably a casting "formed with ribs to give it the required strength and centrally thr'ouglnthe top plate 40 is formed a pour i'ng hole through which the molten metal will be poured in the casting operation, as

will presently more fully appear;

The underside of the top plate 40 is preferably formed with a recess within which is set the upper portion of the top meld section :5; thisfmold section being held rigidly toathe top plate e'lOby means of screwsetfi. This top-mold sect-ion 151s formed with a central opening 47 coinciding with the pourand the formediloi the pr0perishape to the upper portion of the'car wheel for other article to be cast.

The lower 'artlcle to be cast,

- therefrom to the corner posts ortion of tie mold, and, in the apparatus own, const1tu ting the chiller .for chilling the tread of the car wheel 52 to be cast. The under side of the ring 51 is formed with a beveled cavity 53 corresponding to the cavity 50 and adapted to receive the beveled guide rib that rises from the upper face of the bottom mold-section 61."

The upper face of the bottom mold-section 61 is formed with suitable elevations 62 corresponding in outline to the shape of the these elevations 62 in a mold for car wheels serving to form the brackets or strengthening ribs on the sides of the wheel. Thebottom mold-section is formed with a central opening 62 and, adjacent this central opening 62' with a plurality of vertically disposed vent holes 63. These vent holes 63 have branch openings 64 near their upper ends leading into the central opening 62 of the bottom mold-section,

and the lower ends of the vent holes 63 communicate with an open space or chamber 65 formed at the bottom of the mold-section 61.

The lower portion of the bottom moldsection 61 is shown as seated within a recess formed in the vertically movable carrier or platen 70. This mold carrier is preferably a casting. having arms 71 proycting or standards 12. The outer ends of the arms 71 have concaved,babbi tted portions 72 that serve as guides to slidably engage the posts 12. The bottom mold-section 61 is'rigidly connected to the mold carrier 70 by means of bolts 72 that pass through the moldcarrier 70 and into threaded openings in the lower portion of the bottom mold-section 61. The underside of the mold carrier 70 is formed centrallywith a hub 75 that is screw threaded to en a e the upper end of the piston rod 17 w ie is ad ustably secured thereto by means of a nut 17 by which the mold cars, rier 70 is raised and lowered. Through the mold carrier 70 are formedthe ventholes 7 6 that communicate with the chamber 65 at the under side of the bottom mold-section 61 and through the mold-carrier "70 are formed three vertical openings 77 through which loosely pass nected at their upper ends to the central support 81 that serves to sustain the central ortion of the casting when the molds have men opened. as clearly shown in Fig. 2 of the drawings. The lower ends of the three rods 80 that depend from the support 81 are adapted to contact with the stops 30 that rise from the boss 25 of the cylinder head 16 (seeFigl). I

From each side of the ring 51 that forms the rods 80 that are conthe central portion of the moldfproject studs 55 that carry at their e'nds anti-friction rollers 56 which, -when the mold-sections have been opened, as shown in Fig. 2, contact with and rest upon the horizontal portions of the rails 57. These rails 57 are bolted to brackets 57 secured adjustably on the corner posts or standards 12 and are supported centrally by upright bars 90, the

lowernends of which are bolted, as at 91, to

the base plate 11 and and the upper ends of which are secured by angle bars 92 to the rails 57. The vertical bars are preferably angle bars and are strengthened by strap irons 93 diagonally disposed and riveted to the angle bars 90.

In using my improved apparatus, as illustrated in the accompanying drawings, for the casting .of car wheels, the parts will be brought to the closed position illustrated in Fig. 1 of the drawings, and at such time there will have been placed within. the molds a central core of dry'or baked sand and a surrounding sand core 101 adapted to form the annular chamber around the hub of the finished wheel. Above the central core 100 will also have been placed a ring 102 of dry or baked sand, this ring having inwardly projecting legs that rest upon the conical upper art of the central core 100. The downward projecting portions of the annular core 101 rest upon the upper ends of the vent holes 63 and the lower portion of the central core 100 will rest upon the top of the su port 81. In bringing the parts of the mo (1 to the closed position shown in Fig. 1, it will be seen that the ribs 49 and 60 will insure the accurate alinement of the upper and lower mold sections and the chilling ring as the parts are brought together. With the parts of the mold thus closed and with the cores in position, metal will be poured through the opening 42 of the top plate and will pass down into the cavities formed by the mold sections. The vent holes 63 will permit the escape of gases passing from the sand cores through these vent holes to the chamber 65 and thence by the ports 76 to the atmosphere.

After the wheel 52 has been cast, the operator will shift the handle 24 of thethreeway valve so as to cause air, steam or other fluidunder prdnure to be admitted to the upper portion the cylinder 15 above the piston 18 and us move down the carrier :0 and the bottom mold-section 61, and, as these parts move downward, the chilling ring 51, the wheel 52 and the support 81 will also move downward until the antifriction rollers 56 at the sides of the chilling ring 51 contact with the rails 57, at which time also the lower ends of the port 81 will contact with the upper ends of the stops 80 that rise from the boss 25 of the cylinder head 16, and the mold carrier or rods 80 below the supplaten will contact with the stops B so-'1 cured adjustably by bolts to the posts or standards 12. The parts will then occupy the position shown in Fig. 2 of the drawings, the support 81 serving to sustain the central portion of the freshly cast car wheel 52. The cast wheel 52 and the chilling ring 51 may then be moved away from between the top and bottom sections of the mold along the tracks 57 to a point adjacent the annealing pit. As soon as the rimof the wheel is suiiiciently chilled, it will shrinkand will drop away from the chilling ring 51 and the wheel may then be annealed in the usual manner, and the chilling ring 51 be returned to position between the top and bottom moldsections'. After a chilling ring has been returned to position between the top and bottom mold-sections, the cores will be placed in position as above described, and the-attendant will then-shift the three-way valve so as to admit fluid under pressure to the lower end of the cylinder 15, thereby causing the mold carrier 7 0 and the lower mold section to be raised until it lifts or picks up the chilling ring 51 and the under surface of the top inold section 45, as shown in Fig. 1 of the drawings;

the preferred embodiment of my invention, 1 wish it understood that the detailsof construction and arrangement above set forth may be varied within wide limits without departing from the scopeof the invention and that features of the invention may be employed without its adoption as an entirety.

Having thus described my invention,

what liclaim as new, and desire to secureby Letters Patent, 1s:- V r e 1. In a casting apparatus, the combination of separable mold-sections, an intermediate chiller movable toward one of the mold-sections, and means for shifting one of said moldsections and said chiller simultaneously in the same direction and sep'arating the same to open and close the mold.

2. in a casting apparatus, the combination of separable mold sections, a chilling ,iing interposed between said'inold sections,

and means for opening and'closing the mold and for separating said chilling ring from both 0t said mold sectidns" when the mold is open, to ,tlrereby permit the lateral movement oiisaidphilling ring 'tron between the mold secticjns.

' 3..'Ii1- a gas closing the mold-"a chilling ring located between said mol being free to,

'ove laterally from between said mold-sections when the latter are separated and means for supporting said chilling ring during its lateral movement.

4. In a casting apparatus, the combination of separable mold-sections; means for closing rollers will travel ing said forces it upward against 1 While I have described what I regard as frame,

, ting apparatus, the combination of separable;mold-sections, means for d sections, said chilling ring the mold, a laterally movable chiller located between said mold-sections and provided with projections ortr'unnions and rails or supports arranged at the sides of said chiller and whereon the chiller is sustained as it is moved away from the moldsections.

5. In a casting apparatus, the combination of separable mold-sections, means for closing the mold, a laterally movable chiller located between the mold-sections and provided at opposite sides with anttfriction rollers, and rails whereon said "anti-friction as the chiller is moved away from the mold-sections.

6.1m a casting apparatus, the combination o f separable mold sections, a chilling ring arranged between and held in place by said mold sections when the mold is closed, and means for shifting one of said mold. sectionsto open the mold and for mov chilling ring to a position clear of both of said mold sections to thereby permit the lateral movement of'said ring from be tween the mold sections.

1 7 A casting apparatus" comprising a frame, mold, sections mounted thereon, a chilling ringheld in place between saidmold sections when the mold closed, and means for opening the mold and for separating said chilling ring from-both of said mold sections to thereby permit the movement of said ring laterally from between said mold sections when the mold is open.

8. A. casting apparatus comprising a frame, separable mold sections mounted thereon, a chillerlield in place between said mold sections when the mold is closed, and means for opening the mold and for separating said chiller and the casting from both of said mold sections to thereby permit the lateral movement of the chiller and casting from between said 'nold sections when the mold is open.

9. A casting apparatus comprising a upper and lower mold sections mounted thereon, a. chilling ring held in place between said upper and lower mold sections when the mold is closed, means for relatively shifting said mold sections and ring invertical direction to open the mold and separate said chilling ring and the cast ing from-said mold sections, to thereby permit the lateral removal of the chilling ring and casting from between said mold sec- T lJlOIlS, and means for supporting said chilling i-ing during its lateral movement,

10. A casting apparatus comprising a frame, upper and lower mold sections n'lounted thereon, a, chiller held in place between said upper and lower mold sections when the mold 1s,closed, means for lowering .said lower mold section and said chiller to open themold and means a): arresting said chiller and the casting in pos tion clear of arms projecting both of said mold sections to thereby permit the lateral removal of said chiller and the casting from between the same. 1 a

casting apparatus comprising a frame, a fixed mold-sectilm, a movable ujoldsection, a cylinder and forppeiating said movable mold-section, a chiller located between said mol -sections and movable toward and from the fixed mold-section and movable also laterally from between the mold-sections, when the latter are separated and means for supporting the chiller as it is moved from between the mold-Sections.

12. A casting apparatus comprising a frame, a top mold-section at the u r part of said frame, a vertically mova e mold-- section beneath said top mold-section, avertically and" laterally movable chiller farranged between said mold-sections, and m cylinder and piston movable mold-section for shifting said lower mold-section and, the chiller to close the mold.

13. A casting apparatus comprising a frame, a fixed mold-section at the upper part of said frame, a vertically movable mold-section beneath said fixed mold-section, a vertically and laterally movable chillefarranged between said mold-sections, a cylinder and piston located beneath said movable mold-section for shifting the low'er moldsection Sand the chiller, fluid delivery pipes leading to the opposite ends of said cylinder and valve mechanism for controlling the flow of fluid to said cylinder.

14. A casting apparatus comprising a frame, a top mold-section fixed at the upper part of said frame, a verticallymovable mold-section beneath said top mold-section, a vertically and laterally movable chiller arranged between said mold-sections, vertical posts or guides for directing tht movement of said movable mold-section, and a cylinder and piston located beneath said movable mold-section for shifting said lower mold-section and the chiller to close the mold. I I v 15. A casting apparatus comprising a frame, a top late at the upper part of said frame, a fixed mold-section secured to said top-plate, a lower movable mold-section, 1 support or platen for. carrying said lower mold-section, guides for said support vor a cylinder and piston for shiftin said lower mold-section and a vertically and laterally movable chiller arranged between said mold-sections. Y i

16. A casting apparatus 00 a rising a frame having a plurality-of ve cal posts a top plate at the upper part of said frame, a fixed mold-section secured to said; top plate, a lower mold-section, a su port or platen for carryin said lower m'ol -section, f om said platen and enof the frame to guide said gaging said posts located beneath said platen in its movements, a ton for shifting said lower a vertically and t y. movablefchillsr arranged sai .moldmeanafor lowermold section and said chlller, a vertically movable central support for the casting arranged to enter the central opening of the, lower mold section (limiting the! downward movement of said 'centralcasting su y I 5185A castm apparatus comprising a frame, a top mad-section at the up er part of sai frame, a vertical] -mova (section located beneath sai and rovided with a central openin ticall; movable chiller arranged said mold-sections, means for shifting said lower mold-section and said chiller, a vertically'movable central support for the castingarranged to enter the central opening of the lower moldlimiting the downward movement of said central casting support, said means compris in rods de nding from said support and adgustable vices a l vertween of said rods. p

19; A casting apparatus comprising" a frame, a top-mold-section at the up r part of said frame, a vertically mova e moldsection located beneath saidtop mold-section and rovided with a central a vertically movable chiller arranged between said mold-sections,- a cylinder and piston for shifting said lower mold-section alnd said chiller and a; .htral support for t lower mold-section and arranged to set within the central opening thereof, when the mold is closed, and means for adjustably cpntrolling the said Shp rt.

20. A. casting frame, a top mold-section atfthe u r part "of said frame, a verticallyfmova moldsection beneath said top moldtically movable platen for carrying said lower mold-section, said platen being vided with one or more vent openin and 'said lower mold-section be'n provide with a ce tral openin Jand wit you ext; ding vertica 1y therethrough and having branch vent openings [communicating with said central opening adjacent its u pt end, a chiller located bet een said moldions, and a support for t e central portion of the casting movable ith respect to said lower mold-section and ads ted to fit within the central bpening thereo said supshifting said and means for e moldtop mold-section section and means for for engaging the ends apparatus comprising i s casting movable with respect to the downward movement of section, a er t openings I port being of less vertical dimension than ranged between said mold-sections, means the central opening of the lower mold-secfor shifting said lower mold section and tion to expose the inner ends of the vent said chiller to close the mold, and ,means for ports to the sand core carried by said cenlimiting the downward movement of the 5 tral sulpport. chiller so that the lower mold-section may 5 21. castings apparatus comprising a 'be withdrawn from engagement therewith. frame, a top mold-section atthe up er part f HERBERT H. HEWITT. of said frame, a vertically movabie lower Witnesses: mold-section located beneath said top mold- GEO. P. FISHER, 0 section, a vertically movable chiller ar- KATHARINE Gunmen.

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