US706487A

US706487A - Machine for molding.

Info

Publication number: US706487A
Application number: US7314301A
Authority: US
Inventors: John N Battenfeld
Original assignee: CLEVELAND AUTOMATIC MOULDING MACHINE Co
Current assignee: CLEVELAND AUTOMATIC MOULDING MACHINE Co
Priority date: 1901-08-24
Filing date: 1901-08-24
Publication date: 1902-08-05
Anticipated expiration: 1919-08-05

Description

No. 706,487. Patented Aug. 5; i902?.

J. N. BATTENFELD. mA'cHmE Fon nomme.

(Application lad Aug. 24, 1901..) (no lndl.)

3 `Sheets-SMM' I.

0.706,4'87.l Patented Aug. 5, |902.v

J. N. BATTENFELD.

yMACHINE FOR HOLDING. (Application filed Aug. 14l 1901.)

UNITED STATES PATENT OFFICE.

JOHN N. BATTENFELD, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVE- LAND AUTOMATIC MOULDING MACHINE COMPANY, `A CORPORATION OF OHIO.

MACHINE FOR MOLDING.

SPECIFICATION forming part of Letters Patent No. 706,487, dated August 5,1902.

Application iiledAugnst 24, 1901. Serial No. 73,143. (No model.)

T0 all wwntit'mcty concern:

Beit known that I, JOHN N. BATTENEELD, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and My invention relates to machines for mold` ing in sand as applied with the usual flask and patterns; and the obj ect of the invention. is to provide means whereby the flaskv is filled-- with sand and the same then tamped or,

rammed about the pattern, after which the pattern is withdrawn, all of these operations being performed mechanically'while the machine is in motion and as hereinaftershown and described, and more particularly pointed out in the claims.l

In the accompanying drawings, Figure l isa side elevation of myimproved machine with the parts at rest asat the end' of each operation. Fig. 2 is a sectional plan view, taken on line X X, Fig. l, of the rear side of the frame and showing more particularly the mechanism for starting andstopping the machine. Fig. 3 is acentral sectional elevation on line B B, Fig. 5, with the sand-feed box brought forward over the flask. Fig. 44 is a perspective View of the feed-box alone. Fig. 5 is a front sectional view on line A A, Fig. 3. Fig. 6 is a perspective view of a flask adapted to be used with this machine.

Briefly stated, the operation of molding,

with this machine is divided into three separate but associated steps, which are defined as follows: first, the placing of the pattern into position and the withdrawal of the same after the molding has been accomplished; second, the filling of the liask with sand about the pattern, and,third, the tamping or ramming of the sand to make a perfect mold. All of these operations are performed mechanically after a flask A is placed in position, and the main advantage .gained thereby is the rapidity in which perfect work is turned out and labor and expense saved. The mechan- 'ism entering into these various operations is mounted directly or indirectly upon a main frame 2, and the parts directly associated 1with the molding-flask A comprise a movable support B for the pattern C, a sliding sandfeed box D, and a tamping or ramming plunger E.

Flask A is ofany usual or desired form and is removably supported upon a moldboard 3, `bolted or otherwise fastened between the sides of frame 2. Pattern C is adapted to be raised and lowered through openings of corresponding shape to the pattern in moldboard 3, and the means for operating support B comprise a grooved cam 4, within which a roller a on the lower end of vertical stem 5 rides in con- `stant engagement. 4A cross-bar 6 guides and supports the lower end of stem 5 in its vertical travel. Cam 4 is fastened on a crossshaft 7, which `has .bearings'on main frame 2, and said shaft is rotated by means of gears 8 at eachend thereon outside of frame 2, which mesh with pinions 9 on a power-shaft 10, mounted in bearings at the rear of frame 2. VA frictionbandfwheel 11 on shaft lO transmits the power thereto when handle 12 throws in the friction-clutch-actuating mechanism. This friction-clutch mechanism may be of any suitable kind. As shown, a curved clutcharm d, pivoted on wheel 11, is held at its free end in constant engagement with the beveled portione on collar f. Rollers or pins g on the forked end of lever l2 ride in a circumferential groove in said collar and provide the connec-v tion whereby said collar is forced to slide on shaft 10 inrelation to arm d when said lever 12 is actuated. Lever l2 is pivotally supported upon a standard 13, attached to frame 2 and is bent at an angle at 14. This angle 14 is engaged bya roller 15, mounted on the lower `head 16 of the connecting-rods 17, which operateplungerE. Lever12isoperatedbyhandto throw on the power and is engaged by roller 15 to throw off the power at the end of every single revolution of gear 8.

At the top and rear of l., the machine is located a sand-supply box or magazine 18, below which feed-box D is adapted to slide and mately discharged into the flask A.. Feed- IOC) box D has side flanges 19, which slide in grooved ways b at the top of frame 2, and said box normally rests above a table 20 on frame 2, which is located beneath the supplybox 18. Box D is carried forward, with its load of sand, directly over flask A when plunger E is at the upper part of its movement and out of the Way, and this is doneby means of links 21, pivotally connected to trunnions or projections c, rigid with each side of box D, and levers 22, connected withsaid links, which levers are pivoted on the main frame at 23 and have rollers 24 below this pivot riding in cam-grooves 25 upon the inner face of each gear 8. l

Connecting-rod heads 16 are attached to eccen trically-arran ged wrist-pins 26 on the outer face of'gears 8, and the connecting-rods 17 are rigidly attached to heads 16, but are free to slide at their top ends within heads 27, pivoted on the extensions or trunnions of crossbeam 28, which carries ramming-plunger E. Springs 29 are interposed between heads 27 and nuts 30, threaded on the top end of each rod 17. Cross-beam 28 is free to slide upon upright rods 31, rigidly attached to frame 2.

Feed-box D has a back extension or table 32, which closes thebottom of sand-supply box 18 when box D is carried forward. As box Dis returned plunger' E is being carried down, and the sand that has been deposited in ask A is then rammed in the fiask, and it is in this connection that springs 29 are of all importance. If the sand were always of the same character, the exact pressure to make a perfect mold could be determined and plunger E could be set at any desired point; but the sand packs differently under different conditions, depending upon whether it be dry or green sand, and therefore a tamping-plunger having a yielding pressure,which will permit the plunger to adapt itself to varying conditons, is necessary. After plunger E is carried up thev patternv O is Withdrawn vby cam 4 lowering support B, and the iiask, with the finished mold,is then removed and anew flask is placed inposition and the process is repeated.

Feed-box D is preferably made to hold considerably more sand than the iiask requires, because a better and more even filling ofthe flask is thereby obtained. The construction of the machine in its various details could be materially changed without departing from the spirit of my invention, and therefore I reserve the right to make such modifications as would come withinthe scope of my claims.

What I claim is- 1. In a molding-machine, a iiask and pattern, and means to support the same, in combination with a movable sand-feed box having a greater sand capacity than said flask when the pattern is in place therein and when the sand is compressed,means to support said feed-box above and in close relation to said ask, and means to operate said feed-box back and forth over said fiask, substantially as described.

2. In a molding-machine, the flask and a support therefor, a ramming-plunger, a support for the pattern beneath said plunger, a sliding feed-box having a greater sand capacity than said flask when the sand is compressed, and means to carry said box over the pattern-support whereby part of its contents is discharged into said flask, and means to retire said feed-box to level the sand within the flask, substantially as described.

3. In a molding-machine, the tiask and its support, a ramming-plunger arranged to operate above said support, means to raise and lower said plunger, a sand-feed box adapted to slide back and forth over said flask, said box comprising vertical walls with anopen top and bottom, and constructed to carry more sand` than said liiask will hold when the pattern is in place therein and when the sand is compressed, a sand-supply box for said feed-box, and means to move said feed-box back and forth between said iiask and supply-box, substantially as described.

4. In a molding-machine, the combination of a flask, a pattern-support beneath said flask, a ramming-plunger adapted to raise and lower in relation to said flask, vertical guides for said plunger, a power-gear, connecting-rods having crank connection with said gear and a sliding connection with said plunger, and springs mounted on said connecting-rods to provide a yielding pressure for the plunger substantially as described.

5. A molding-machine provided with a flask and a support for said flask; a ramming-plunger having a cross-beam adapted to slide, rigid vertical guides for said beam, trunnions at either side of said beam, connecting-rod heads supported on said trunnions, powergear, connecting-rods having crank connection with said gears and a sliding connection with said heads, adjustable nuts on the ends of said rods, and springs between said nuts and head to provide a yielding pressure for said plunger, substantially as described.

6. In a molding-machine, the movable ramming-plunger and a flask supported below the same, a pattern-support beneath said flask, a feed-box at one side constructed to hold more sand than said ask when the sand is compressed, and adapted to slide over the top face of the flask, a sand-supply box for said feedbox, means to slide said feed-box forward to convey part of the sand in said feed-box to said flask, means to slide said feed-box back to level the sand deposited in the iask, and means to operate said plunger to compress the sand fed into said flask, substantially as described.

7. A molding-machine comprising a sandsupply box, a iiask, a feed-box having a larger sand capacity than said flask when the sand is compressed, and means to move said feedbox back and forth to fill the fiask uniformly with sand and to level the sand therein, in

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combination with a ramming-plnnger having means to operate the same to compress the sand fed to said flask, substantially as described.

8. A molding-machine having a movable pattern-support and a ramming-plunger in line with said support, and means to operate both said support and plunger, comprising a shaft centrally located beneath both said plunger and support, power-gears at each side of the vertical center of said plunger. and movable support, connecting-rods for the plunger` having crank connections with said gears, a cam on said shaft having operative connection With-said movable support, and means to rotate said shaft, substantially as described.

9. A molding-machine having a flask and a support therefor with a ramming-plunger arranged to operate above the same, a movable pattern-support arranged beneath said plunger, a cross-shaft beneath said pattern-support, a cam on said shaft to carry said support up and down and to hold the same in raised position during the filling of the flask and compression of the sand therein, powergears on said shaft, connecting-rods for said shaft having crank connections with said gears, and means to rotate said shaft, substantially as described.

10. In a molding-machine having a frame constructed to support a ask and provided' sion at its top and rear adapted to close the bottom of said supply-box when the said feedbox is shifted, means to shift said feed-box from said sand-box to the flask and back to partially discharge its load of sand into said flask, and means to level the sand in said flask by the back movement of said feed-box, substantially as described.

l1. In molding-machines using flasks and patterns, a sand-supply box, a movable sandfeed box beneath said supply-box, arammingplunger, a movable support for the pattern, a cross-shaft beneath said pattern-support, a pair of power-gears on said shaft, connectingrods having crank connections With said gears to operate said plunger, cam-grooves in the face of said gears, a pi'voted lever mounted opposite each gear and having a roller riding in said grooves, links connecting said lever with the movable feed-box, means to rotate said gears and shaft, and means to automatically stop said mechanism at the end of the molding operation,substantially as described.

12. In a molding-machine using flasks and patterns, a movable sand-feed box for filling the flask, a rainming-plunger, a movable snpport for the pattern, a cross shaft having power-gears with connected mechanism to operate each ot' said parts, a friction-clutch, a lever to throw said clutch, and means eccentrically mounted on one gear to engage said lever and stop the operation after each full revolution of said shaft, substantially as described.

Witness my hand to the foregoing specification this 9th day of August, 1901.

JOHN N. BATTENFELD.

Witnesses:

R. B. MOSER, I-I. E. MUDRA.