US353712A

US353712A - Sand-molding machine

Info

Publication number: US353712A
Authority: US
Publication date: 1886-12-07
Anticipated expiration: 1903-12-07

Description

3 Sheets-Sheet 1.

A. RICE.

(No Model.)

l SAND MOLDING MACHINE.

Patented Deo.' '7, 1886.

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(No Model.)

WITNESSES 3 Sheets-Sheet 2.

A. RICE.

SAND MOLDING MACHINE.

Patented Dec. '7, 1886.l

M .dttorney (No Model.) 3 Sheets-#Sheet 3..

v A. RIOB.

SAND MOLDING MACHINE.

Patented Dep. 7, 1886.

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N PETERSA PhmwLimnmpher, wnsmngmn, 11C,

UNITED STATES PATENT OFFICE.

ARTHUR RICE, OF NEV ALBANY, INDIANA, ASSIGNOR TO THE PEERLESS MANUFACTURING COMPANY,

OF LOUISVILLE, KENTUCKY.

SAND-Momma MACHINE.

SPECIFICATION forming part cf Letters PatentNo. 353.712, dated December 7, 1886.

Application filed May 17, 1886. Serial No. 202,571.

To all whom it may concern.:

Be it known that l, ARTHUR RICE, a citizen of the United, residing at New Albany, in the county of Floyd and State of Indiana,

5 have invented certain new and useful Improvements in Sand-Molding Machines, of which the following is a full, clear, and exact description.

This invention relates to a machine for form- I ing in sand molds for casting iron and other metallic articles; and the present invention is a modification of the machine covered in the United States Patents Nos. 322,202, 332,834, and 340,362; and the invention consists in a I sand-molding machine in which the pattern and its bed are stationary and rigidly affixed to an immovable member of the machine, combined with a moving flask, substantially as hereinafter particularly set forth and claimed.'

2o Intheaccompanyingdrawings,intheseveral figures of which like parts are similarly designated, Figure lis a perspective view of my machine in the position of compressing. Fig. 2 is a similar view, with the binder swung aside ready to receive a fresh flask. Fig. 3 is a side view of a modification, wherein the draw is at an angle. Fig. 4 is a vertical section with the parts in position to begin compressing or remove a molded flask. Fig. 5 is 3o a similar view taken at right angles to the view in Fig; 4. Fig. 6 is a vertical section of the parts in the position of Fig. l. Fig. 71s a perspective view of a one-piece pattern and pattern-bed; and Fig. 8 shows, in perspective, 3 5 details of the false part and flask. Fig. 9 shows the improved cope and drag in perspective.

The frame-work c is of approved construction to receive a main driving'shaft, b, to which power may be applied from a band-wheel, c,

4o through a countershaft, d, worm e thereon,

and worm-wheelf on the main shaft.

The parts in this machine corresponding with like parts in the machine illustrated in the Patent No. 322,202 are herein similarly designated.

g is the box or false part, provided with the ri gidly-aftixed depending shanks r, which have vertical movement in the guideways s on the sides of the framework. rlhe false part is provided with pitman-rods t, which in this in- (No model.)

stance are connected eccentrically to the wormwheel f on one side and a disk or crank, f', o n the other side. (See Figs. 4 and 6.) Obvlously the rotation of the shaft b will alternately raise and lower the false part on the bearings it has ou the rabbeted portions p of the frame-work. Thehalf-flask o is of usual construction.

In Figs. 1, 2, and 3 the binder y is constructed and applied substantially as in the Patents 6o Nos. 332,834 and 340,362, and in Figs. 4, 5, and 6 the binder is constructed and applied substantially as in the Patent- No. 322,202, and need not be herein further set forth.

For starting and stopping the machine I may employa friction-clutch of any approved @construction (but not shown in detail herein) in connection with the band-wheel c, which latter is loose on the shaft d, and this clutch may have a rod, g, which is jointed by a bev- 7o eled-head pin, gx, to the lever j, the latter being pivoted to the frame of the machine. A lever, lz., is pivoted to the guide s, and has a forked end, L, the upper and lower members of which forked end are periodically engaged by a pin, i, on the shank r of the false part as said false part is raised and lowered to vibrate said lever. The lower end, h, of the lever h is hinged to it by a pin, h, at right langles to the pivot-pin of said lever, so that said end 8o is free to swing outward from the lever h. Now, the machine having been started by the manual operation of the clutch through the rod g and lever j, as the shank rdescends on the down (compressing) stroke,the pin t' strikes the lower 85 fork of the lever h, and its end h, then coming against the square back of the pin gx, forces the rod g out and stops the machine at the compressing-point, and passes beyond and out of reach of the said pin to the position indicated by dotted line x', Fig. 2. This operation is possible by reason of the fact that the levers j and h have different centers of motion or pivots, and that their ends move in arcs of different and eccentric circles. It will be seen, therefore, that the end li will travel in an arc substantially parallel with the arc of the lever j for only a given distance, and then leave such arc, and in so doing slip by the squared back of pin gX into the position indicated by dotted roo line x'. At the proper time the rod g is again manually operated to start the machine to permit the complete downstroke without the pin further acting upon the forked lever h. The downstroke being completed and the upstroke begun, the lever h remains at the dotted-line position until the pin i passes the fulcrum of the lever h, when it acts upon the upper end -of the fork of the lever, and drives said lever into the full-line position again, its hinged end h yielding to pass over the beveled side ofthe head of the pin y".

Instead of the partly automatic operation of the clutch, the said clutch may be actuated.

wholly by hand, as by such an arrangement as is shown in Fig. 1, which is simply a spring hand-lever, j, connected to the clutch-rod g.

The pattern k, Figs. 4, 5, 6, and 7, is shown as purely conventional, and may be, and-is here shown as, one with its bed Z, which-bed rests solidly upon and is affixed to the upper edge ofthe frame-work, as by bolts or screws. No templet is employed; but the pattern is used not only to form the mold in the sand as the ask is brought down by the false part and pitmen, but it and its bed serve as a base, against which the sand is compressed. This is the distinguishing characteristic difference between my present invention and that c0vered by the Patent No. 322,202, and it greatly simplifies the construction of parts, the machine at the same time losing little, if any, of

its effectiveness and utility for many kinds of work. y

In Fig. 3 I have shown my machine in compressing position, arranged to draw at an angle instead of straight, as in the other views. This arrangement is desirable in some classes of work-as, for example, in molding plowpoints, which have an undercut,77 so called in the founders art, or a re-entrant angle. VIn this form of machine the recessed or rabbeted end of the frame-work a slants at the desired angle. The false part slants correspondingly, and the shanks project from it at a corresponding angle, and work in'guides properly arranged to receive them. The pitmen follow the same slant, all as clearly represented in said Fig. 3.

Fig. 4 illustrates the parts in the position to begin compressing, the parts also being in sub-V stantially this position when the binder is swung aside, as in Fig. 2, for introducing the -sand into an empty half-ask or for removing a mold.

Figs. 1 and 6 show the partsin position when the sand is compressed, or, in other words,

' when the mold is formed. The three Figs. 4,

5, and 6 illustrate the same form ot' machine as that shown in the Patent No. 322,202, but equipped with t-he present invention.

The operation of molding with this machine is as follows: To receive the flask the parts are brought to the position shown in Figs. 2 and 4, the top of the( box or 4false part q being in practice about an inch and a half above the surface of the pattern-bed, so as to` furnish space `for the surplus sand needed to fill the iiask, while compensating for compression. The binder is then thrown around out of the way, as in Fig. 2, andan empty half-flask secured upon the upper part of box q. The half-tiask is then loosely iilled with properly` tempered sand and the binder swung back and it and the bed compressing the. sand and` forming the mold. By the further revolution of the shaft b the false part, ilask, and binder rise together, thereby stripping the mold from the stationary pattern, and leaving the mold nished in the iask and the flask ready to be removed. At the completion of the upstroke the parts are in the position indicated in Fig. 4, and then the binder may be released and the half-ask containing the finished mold removed. Further revolution of the shaft b carries the boxq and its appurtenances to the po sition indicated in Fig. 2, thereby setting the vmachine for another iiask.

The up and down movement of the flask and box q is, in practice, say, from two to six inches, (more or less,) to allow for the necessary depth of the pattern, only about an inch and a half of the last part of the downstroke, howthe flask.

The same advantages are gained in this machine to about the same degree as in the machine set forth in the Patent N o. 322,202.

Fig. 8 represents the movable box q arA ranged for stationary guide-pins to be used in stead of adjustable pins and sockets, as heretofore used. rIhe practice has been to have in the movable box g (at or about where socket is shown at l) sockets for the reception of the pins of the cope. When molding drags, pins were fitted in these sockets and extended above the movable box the length of the ordinary flaskpin. Ihe drag would t to these pins. -By having stationary pins fixed in the movable IOO ever, being necessary to compress the sand in IIC) box at 2, and holes to fit drilled in both cope and drag at 3 and 5, respectively, every halfiiask williit the movable box.

In order to make drags and copes iit with each other, holes are drilled at 4 in the drag, and the cope is provided with pins 6, toengage said holes. In the movable box7 at 1,

taken as old and common, or else purely con-n ventional.

It will be noticed that in Fig. 1 I omit and dispense with the parts 7L z', and rearrange the rod g and the lever j to effect the starting and stopping of the machine.

1. In a sand-molding machine of substantially the character set forth, a movable false part provided with a binder and carrying,` the flask, and a stationary pattern and pattern-bed, in relation to which the iask is moved 'to make and clear the mold, substantially as described.

2. In a sand-molding machine, the combination of a frame-Work, a stationary pattern, and pattern-bed Xed to the frame-Work, with a movable false part carrying a binder and surrounding said pattern and bed, guided upon the framework, and adapted to receive and hold a flask and move it down upon the pattern and its bed, and remove it therefrom, as set forth, to thereby form the mold, compress the sand, and strip the mold from the pattern, substantially as described.

3. In a sand-molding machine, the combination of a stationary pattern and patternbed, with a false part surrounding them and adapted to receive a ask, guides for said false part, means, substantially as described,

for imparting up and down movements to said 3o false part with relation to the pattern and pattern-bed, and a binder connected to said false part and constructed to cover the ilask and secure it to the false part, substantially as specified.

4. In a sandmolding machine, the framework having its upper end rabbeted and slanting, a pattern and pattern -bed, a slanting false part or box arranged thereon and guided thereby,and means, substantially as described, 4o to impart up and down movements to said false part on said slanting rabbeted portion of the frame-Work, combined with a flask and binder, whereby the draw may be effected at an angle, substantially as described.

5. In sand-molding apparatus provided with notches l and pins 2, a drag having holes 3 and 4, and a cope having holes 5 and pins 6, to adapt the drag and cope to each other and to the notches and pins of the apparatus, sub- 5o stantially as described.

In testimony whereof I have hereunto set my hand this 13th day of May, A. D. 1886.

ARTHUR RICE.

Witnesses:

CHARLES H. GIBSON, GoLDsBoRoUGn ROBINSON.