US451577A - Molder s flask - Google Patents

Description

(No Model.)

2 sheets-'sheet 1. W. G. RICHARDS.

MOLDERS FLASK.

Patented May 5.1891.

(No Model.) 2 Sheets-Sheet '2.

W. G. RICHARDS.

MOLDERS PLASK.

No. 451,577. Patented May 5,1891.

fue nonms versus co., mous-mno., wxsnwarou, n. c.

UNITED STATES PATENT irren.

lVILLIAM Gr. RICHARDS, OF BOSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE AMERICAN STEEL IVHEEL COMPANY, OF NEIV JERSEY.

IVIOLDERS FLASK.

SPECIFICATION forming part of Letters Patent No. 451,577, dated May 5, 1891.

Application led July 14,1890. Serial No. 358,655. (No model.)

.To all whom, t may concern:

Be it known thatl, WILLIAM G. RICHARDS, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Molders Flasks, of which the following is a specification.

This invention relates to flasks for eastin g car-wheels and like articles by the method of filling the mold from the under side thereof, the object being to furnish a flask for such purposes having' means for holding in place the cores and in which the several parts may be readily assembled and taken apart.

My invention is in the nature of an improvement on the molders flask described and claimed in my application, Serial No. 358,654, iiled July I4, 1890.

In the drawings accompanying and forming a part of this specification, Figure l is a front elevation of aiiask embodying my present improvements. Fig. 2 is a central vertical section of the same. Fig. 3 is a plan view of the under side of a portion of the bottom board with the removable plate thereon. Fig. 4 is a cross-section in the line ce 'c of Fig. 3, as seen in the direction of the arrow. Fig. 5 is a plan view of myimproved flask, a portion of the pourin g-headbein g broken away and the chill lO not being shown. Fig. 6 is a plan View of the under side of the bottom board. Fig. 7 is a plan View of the pouring-head. Fig. S is a sectional view of one of the plugs carrying the anchor-rods Similar characters designate like parts in all the figures.

My improved flask consists of the nowel or drag 8, the chill 10, resting on said nowelframe and having the usual dowel-pins 35 for retaining the said parts in place relative to each other, and the cope 9, which rests on the said chill andis removably secured thereto by the bolts 36, which bolts pass through ears 62 and 64, formed on said chill and cope, respectively, andare furnished with the keys or' wedges 37'. The nowel part S of the iiask is set on the usual bottom board 52, and is properly located thereon by the dowel-pins 53, which are fixed in ears 7 5, formed on the lower frame S of the flask.

In practice the bottom board 52, and also the partition-walls 40, may be perforated with numerous small holes in a well-known manner to increase their hold upon the material of the mold. For stifening said bottom board, and also for supporting the same at a suitable distance above the foundry-floor, it is provided with a circular rim 7l, extending nearly around the board near the periphery thereof. lithin said rim 7l said bottom board is further stiffened by ribs 72 and 7 3, which I make of slightly less depth than the rim 7l. From the rib 72 and extending out to the margin of the bottom board I make an opening 6,2, from Whose edges depend two parallel ribs 63 and G4. Said opening G2 is closed by the bottom plate 65, which is removably held in place under said ribs Gio and 64 by means of clamps, also removably affixed to said bottom board. The preferred construction of these details is shown in Figs. 3, 4, and G.

The bottom plate 65 has side flanges S4 and S5 on the opposite sides thereof, respectively. Clamps S6 and S7 are afliXed to thebosses S8 and S9 by screws 90 and project under said iianges 84 and S5, respectively. In practice these several parts are so fitted up that the plate G5 may be removed by sliding the same away from the rib 72 until the flanges 84 and S5 are ont of engagement with said clamps, when the plate may be taken off; but if leakage of molten metal or otherobstruction should prevent this method of removing said plate, then by removing said screws 90 the bottom plate may be .taken off without sliding it endwise. The space 62 above said bottom plate and between said ribs 63 and 64 is provided .wherein to form the runner 7 6, which leads through the vertical passages 100 and 102 into the under side of the mold, which, as shown in Fig. 2, is filled by the ear-wheel IV, there shown in section with the arch-core therein.

lAs shown in Fig. 2, the cope part 9 of the liask is provided with a number of radial partitions 46 and with the central ring 47 for supporting the sand of the cope. A number of anchor-holders 48 (of which four are shown in the drawings) are screwed into the partitions or ribs 46, and are bored to receive the wires or anchor-rods 49, by which the archcore 50 is held down during the filling of the mold, said rods being secured by wedges 51,

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which pass through said holders tangential `to said rods.

In practice, after making the mold in substantially the usual manner, the core 50 being set in place and the mold closed, the rods 4f) are put in and firmly pushed down through the holders 4S and the perforations in the ribs 4G against said core, when the wedges 5l are firmly tightened by driving them with a light io hammer. The mold being filled, the metal of the wheel lV firmly incloses said rods, which may afterward be cut off, leaving the ends thereof remaining in the casting.

Owing to the unavoidable presence of sand, wedges for holding the rods if) are found preferable to bolts, screws, or other clamping devices, and for said wedges I find well-formed cut nails to be suitable, since these are regular in size, of the proper taper, and inexpenzo sive, besides being always at hand in foundries generally. The central rim t7 of the cope-frame 9 is divided at two points 97 97 to avoid breakage from expansion when the mold is highly heated by the contained molten metal, which expands the central part much more rapidly and sooner than it expands the outer rim. Each half portion of said rim t7 is connected integrally with two of the ribs At6, thereby securing the strongest construcgo tion permissible under the circumstances. The space between the main ribs 4b' is divided by a series of thinner ribs 06, which extend inward from the rim D nearly to the circle t7 for supporting the sand of the cope.

The pouring-head C is formed in two parts 6G and G8, and is held together at the upper end by the clamp-ring 54:, which fits on the inclined ribs 55, formed on said parts. For properly locating said parts GG and 68 the one 4o on the other the dowcl-pins 3S 38 are provided. 'A flange 3f) is formed on the lower end of the pouring-head C, whereby to hold the said head in place on the flask. Then said head is set in place on the flask, as in Figs. l, 2, and 5, the said flange 39 rests against the abutment or flange 5G of the bottom board 52 and between the lugs 57 and 58 of said board. The upper part of the flange 39 overlaps and rests on top of the said lugs, 5o as shown in Figs. l and 5, thus supporting the weight of the head C on the surfaces U8 9S, Fig. 5.

To lock the head C in place I use a pair of wedges 50, which stand in the notches tlf) 9S) 55 and are driven firmly between the flange Si) of the head and the ends or hooks G0 and Gl of the lugs 57 and 5S, respectively. (See Fig. 5.) Said wedges 59.1nay be separate; but I prefer the construction shown inthe draw- 6c in gs,wherein the wed ges are firmly connected by theyoke 59,which extends over the curved lower end of the head C outside ofthe flange 39. By means of this connecting yoke or bar both wedges are readily operated at once, being driven home by a blow on the bar and readily removed by a barinserted under said yoke.

In making the mold the nowel and the cope are handled and made up in the usual way and assembled withthc chillin place between them, the core being properly set, as above mentioned, and the nowel having the passagevway 7f3 for inflowing metal and leading from the vertical face 77 to the under side of the mold. The pouring-head C is properly lined with sand, as at 7S, leaving a passage at SO, which, when said head is set in place, as shown, connects with the passage 76. After the mold is poured and the metal is slightly cooled the wedges 5t) are pried out and the pouring head forcibly separated from the nowel, breaking the metal of the runnerat the joint 77. The ring 5t is then knocked off,al lowing the two parts UG and GS of the head C to separate and the contained sand and metal to drop out. The remaining operations of open ing the mold and removing the casting will bcundcrstood from the drawings and preceding description without further explanation.

IIaving thus described my invention, I claim- I. In a molders flask, the combination,\vith the nowel and the bottom board provided with a pouring-head at one side thereof, said bottom board havingan opening extending from the pouring-head along under the runner, of the bottom plate under said bottom-hoard opening, and means, substantially as described, removably holding in place said bottom plate.

2. In a molders flask, the combination, with the bottom board having the opening G2 and the depending ribs 63 and (ist at the side of said opening, of the bottom plate G5 and clamps removably fixed to the bottom board and engaging the said bottom plate.

8. In a molders flask, the combination, with the bottom board having an opening with depending ribs on either side thereof, of the bottom plate having the short side flanges Si 85 and clamps removably tixed to the bottom board and engaging said flanges, and a stop limiting the longitudinal movement of said bottom plate under said clamps.

t. In a molders flask, the combination, with the bottoni board having the flange 56 and the lugs 57 58, said lugs being constructed to engage pouring-head-locking devices, of the pouring-head C, having the flange 39 constructed to bear against flange 56 and to rest on said lugs, whereby the weight of said head is sustained by said lugs, and wedges engaging between the lugs and pouring-head flange, whereby the pouring-head is locked in place.

5. Ina molders flask, the combination, with the bottom board having a vertical seat for the pouring-head and having the horizontal oppositely-disposed lugs on either side of said pouring-head seat, of the pouring-head constructed to rest against said seat between said lugs, and locking devices, substantially as described,engagingsaidlugs andhearingagainst the pouring-head,whereby said pouring-head is held in place against its said seat, and

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whereby on removal of said locking means the pouring-head is free to be removed.

G. In a molders flask, the combination, with the bottom board having the flange 5G and thelugs 57 and 58, said lugs being constructed to engage the pouring-head-locking devices, of the pouring-head C, having the flange 3S), constructed to bear against vflange 56 and to rest on said lugs, whereby the weight of said head is sustained by said lugs, and wedges engaging between the lugs and pouring-head flange, whereby the pouring-head is locked in place.

7. In a molders flask, the combination, with the bottom board having the flange 56 and the lugs 57 58, provided with hooks 60 6l, of the pouring-head C, having the flange 39 fitting between said lugs and bearing thereon, and the wedges engaging between said hooks and the flange 39 to hold the pouring-head against flange 5G, whereby said head is removably fixed in place.

8. Inarnolders flask, the combination, with the bottom board constructed, substantially as described, to receive the pouring-head, of the pouring-head constructed, substantially as described, to rest against said bottom board, and connected wedges, one on either side of said pouring-head at the lower end thereof, said wedges engaging the bottom board vand pouring-head to lock the same together and being united by a bar, whereby said wedges may be driven in place and removed.

9. In a molders flask, the combination, with the bottom board having the fiange 56 and having lugs 57 5S, each hook-provided, of the pouring-head C, formed in two parts GG and 68 and constructed to engage between said lugs and bear on said flange 56, means uniting the upper ends of said pouring-head parts, and locking devices, substantially as described, engaging the hooks of said lugs for clamping said head in place, the lower ends of the pouring-head parts being held together by engaging between said lugs.

lO. In a molders flask, the combination, with the nowel and the dope-frame and the core set on the nowel, of anchonrod holders, substantially as described, fixed to the copeframe over perforations therein, anchor-rods extending through said holders and perforations, and wedges crosswise to the anchorrods in said holders, whereby said rods are fixed in place to resist the rising of the core during the filling of the mold.

ll. In a molders flask, the combination, with the cope-frame outer ring, of the inner ring divided into segments and a pair of ribs joining each segment with the outer ring, said ribs joining the segment near the ends thereot', and ribs extending inward from the outer ring and located between the segment-supporting ribs, said intermediate ribs not joining said segment.

lVILLIAM G. RICHARDS. Witnesses:

FRANCIS H. RICHARDS, HENRY L. REGKARD.

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