US340362A - Sand molding-machine - Google Patents

Sand molding-machine Download PDF

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US340362A
US340362A US340362DA US340362A US 340362 A US340362 A US 340362A US 340362D A US340362D A US 340362DA US 340362 A US340362 A US 340362A
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drawer
sand
flask
hopper
machine
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
    • G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
    • G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
    • G01F11/14—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates
    • G01F11/18—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber reciprocates for fluent solid material

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  • This invention relates to certain improvements in that class of' machines for making g molds for casting represented in United States Letters Patent Nos. 322,202, granted July 14, 1885, and 332,834, granted December 22, 1885.
  • Figure 1 is a side elevation, partly in section, of one form of' my invention.
  • Fig. 2 is a similar View of another form;
  • Fig. 3 a cross-section in the plane of' line a' x ot Fig. 2 on a larger scale;
  • Fig. 4 is a bottom View of the binder on another scale.
  • the sand-hopper a, its supporting-frame b, and the molding-machine c may be of any preferable construction.
  • the bottom of the sand-hopper is provided with a chamber, in which is arranged the sand-drawer d in such a manner that such drawer constitutes a movable bottom for the hopper, substantially as in my Patent No. 332,834.
  • the drawer d is preferably of metal, and along the upper edge of each side it is provided with a flange, e, projecting outwardly at right angles from the same, by means of which flanges e e the drawer is supported and movable upon rollers f, secured to the frame b.
  • the drawer is divided into two compartments, and in the form shown in Fig. l the front compartment, g, is bottomless and receives the sand from the hopper, and conveysit to and deposits it in the flask on the molding-machine.
  • the rear compartment, h in all cases has a closed top, li, which serves as a valve to shut off the escape of sand from the hopper when the drawer is projected over the flask.
  • the bridge is hung in brackets 7c between the hopper and the molding-machine, and said bridge is of a width to span the space between the hopper and molding-machine.
  • Said bridge is weighted or otherwise constructed to stand upright, and is in this position so near to the hopper that when the front end of the drawer clears the hopper in movinto a horizontal posit-ion to cover the space between the hopper and molding-machine, and thus aid the compartment g ofthe drawer in carrying its load of sand from the hopper and deposit it in the flask.
  • the drawer works from a stationary platform, Z, interposed between the hopper and its frame b, which platform serves as a bottom for the drawer when its compartmentg is under the hopper.
  • the drawer is moved back and forth by means of a return-screw, m, mounted in the frame b and suitably driven.
  • the drawer is connected to this return-screw by a rod, n., attached to the rear end of the drawer and jointed to a traveler, o, which is supported by flanges p in ways r, attached to the frame b, and this traveler ois provided with a swivelwing, s, which engages the threads of the return-screw to transmit the motion ot the screw to the traveler.
  • the compartment g of the drawer has a movable bottom
  • the rod o1 is provided IO5 with a slot, u', of a length equal to the distance between the moldingmachine and hopper.
  • Grooved or other shaped guards,a are interposed between the sides of the compartment g and the top 5 surface of the bottom t, in order to cover the joint between the bottom and sides.
  • the guards may be riveted or otherwise attached to the sides of the drawer.
  • the engagement of the stop y with the drawer carries the drawer and the bottom in place under the compartmentg over the flask, the bottom sustaining the load of sand in the compartment.
  • the traveler has 5 reached the end of its forward movement, and begins its return movement,carrying back the bottom and letting the sa'nd drop freely into the flask to fill it uniformly and evenly; but it will be noticed lhat the traveler moves the distance of the slot n before it is effective in moving ⁇ the bottom, so that when said traveler has reached the end of its return movement the bottom will not be fully retracted, but will cover the space between the hopper and the 5 molding-machine, thus preventingr the loss of sand at that point.
  • the drawer is pushed back in place under the hopper by hand, and when the partition between its two compartments reaches the stop y the bottom will be also carried back with the drawer, and placed in the position indicated in Fig. 2.
  • the bottom serves as or takes the place of the 5 bridge j in spanning the space between the hopper and the molding-machine.
  • the binder otherwise is constructed and apf plied to the machine substantially as in my Patent No. 332,834.
  • vent holes in thc binder of a moldingmaehine is not original with me, and with reference to this feature my invention resides in providing projections at the corners to separate the binder and flask sufficiently to vent the flask.
  • the meeting parts had to be planed down level at great cost of time and considerable outlay of money, and'with not always satisfactory results.
  • the corner proj ections I not only vent the flask, but in order to get a square fit of the parts have only a few square inches to plane instead of several square feet, and always insure a perfect fit.
  • a sand-hopper and a drawer beneath it for conveying a charge of sand from the hopper to the flask to be filled combined with means for moving such drawer when filled from the hopper to the flask and returning it to the hopper when its charge has been deposited in the flask, the same consisting of the return-screw m, the traveler o, arranged in suitable guides on the frame of the machine and engaging the thread of the return-screw to be traversed back and forth therein, and the rod n, connecting the traveler and drawer to transmit the motion of the return-screw through the traveler to the drawer, substantially as and for the purpose specified.
  • a sand-hopperA provided with a movable drawer, an independently-movable bottom for said drawer,

Description

(No Modevzl.)
A RICE.
SAND MOLDING MACHINE.
Patented Apr. .20, 1886.
Aw' .dttomey UNITED STATES PATENT CEEICE.
ARTHUR RICE, OF NFV ALBANY, INDIANA, ASSIGNOR 'lO THE PEERLESS MANUFACTURING CONIPA NY, OF LOUISVILLE, KENTUCKY.
SAND MoLDlNG-MAol-HNE.
SPECIFICATION forming part of Letters Patent No. 340,362, dated April 20, 1886.
Application tiled January 20, 18H5. Serial No. M9132. (No model.)
T 0 all whom, it 12m/ 1j concern.-
Be it known that I, ARTHUR RICE, a citizen of the United States, residing at New Albany,in
the county of Floyd and State of Indiana, have I,
ing out it will strike the bridge and bring it 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 certain improvements in that class of' machines for making g molds for casting represented in United States Letters Patent Nos. 322,202, granted July 14, 1885, and 332,834, granted December 22, 1885.
The improvements consist in the drawer for filling the mold w-ith sand, and means for operating the said drawer, and means for venting the flask, all as l will now proceed to particularly set forth and claim.
In the accompanying drawings, in the sev` eral figures of which like parts are similarly designated, Figure 1 is a side elevation, partly in section, of one form of' my invention. Fig. 2 is a similar View of another form; Fig. 3, a cross-section in the plane of' line a' x ot Fig. 2 on a larger scale; and Fig. 4 is a bottom View of the binder on another scale.
The sand-hopper a, its supporting-frame b, and the molding-machine c may be of any preferable construction. The bottom of the sand-hopper is provided with a chamber, in which is arranged the sand-drawer d in such a manner that such drawer constitutes a movable bottom for the hopper, substantially as in my Patent No. 332,834.
The drawer d is preferably of metal, and along the upper edge of each side it is provided with a flange, e, projecting outwardly at right angles from the same, by means of which flanges e e the drawer is supported and movable upon rollers f, secured to the frame b. The drawer is divided into two compartments, and in the form shown in Fig. l the front compartment, g, is bottomless and receives the sand from the hopper, and conveysit to and deposits it in the flask on the molding-machine. The rear compartment, h, in all cases has a closed top, li, which serves as a valve to shut off the escape of sand from the hopper when the drawer is projected over the flask.
In Fig. l the bridge] is hung in brackets 7c between the hopper and the molding-machine, and said bridge is of a width to span the space between the hopper and molding-machine.
Said bridge is weighted or otherwise constructed to stand upright, and is in this position so near to the hopper that when the front end of the drawer clears the hopper in movinto a horizontal posit-ion to cover the space between the hopper and molding-machine, and thus aid the compartment g ofthe drawer in carrying its load of sand from the hopper and deposit it in the flask. The drawer works from a stationary platform, Z, interposed between the hopper and its frame b, which platform serves as a bottom for the drawer when its compartmentg is under the hopper.
The drawer is moved back and forth by means of a return-screw, m, mounted in the frame b and suitably driven. The drawer is connected to this return-screw by a rod, n., attached to the rear end of the drawer and jointed to a traveler, o, which is supported by flanges p in ways r, attached to the frame b, and this traveler ois provided with a swivelwing, s, which engages the threads of the return-screw to transmit the motion ot the screw to the traveler.
It will be seen lthat in operation when the binder t is thrown back and the flask a is in 8o position the rotation of the return-screw will carry the traveler,and consequently the drawer, toward the flask, and inasmuch as the drawer is in advance of the traveler by the length ol' its compartment g, said compartment will be 8 fully over the flask at the time the traveler has reached the end of its travel in one direction, hav-ing reached which the traveler begins its return journey, and-immediately carries the drawer back under the hopper to vreceive a fresh charge of sand for auotherflask. It' desi red,automatic stops may be provided for arresting the drawer both at its forward and return movements; butI make no claim to such devices at this time.
In the form shown in Fig. 2 the compartment g of the drawer has a movable bottom,
c, which is supported and travels upon rollers w,xed to the sides of the drawer. This bottom fv is connected to the rod u, which is op- IOO erated from the returnscrew m through the traveler 0, as in the former example, the said bottom being provided with a stop, y, to engage a partition between the compartments g and h of the drawer. The rod o1 is provided IO5 with a slot, u', of a length equal to the distance between the moldingmachine and hopper. Grooved or other shaped guards,a, preferably of sheet met-al, are interposed between the sides of the compartment g and the top 5 surface of the bottom t, in order to cover the joint between the bottom and sides. The guards may be riveted or otherwise attached to the sides of the drawer.
In this form of drawer the engagement of the stop y with the drawer carries the drawer and the bottom in place under the compartmentg over the flask, the bottom sustaining the load of sand in the compartment. When the drawer covers the flask, the traveler has 5 reached the end of its forward movement, and begins its return movement,carrying back the bottom and letting the sa'nd drop freely into the flask to fill it uniformly and evenly; but it will be noticed lhat the traveler moves the distance of the slot n before it is effective in moving` the bottom, so that when said traveler has reached the end of its return movement the bottom will not be fully retracted, but will cover the space between the hopper and the 5 molding-machine, thus preventingr the loss of sand at that point. When the flask is filled, the drawer is pushed back in place under the hopper by hand, and when the partition between its two compartments reaches the stop y the bottom will be also carried back with the drawer, and placed in the position indicated in Fig. 2.
In the form of machine shown in Fig. 2 the bottom serves as or takes the place of the 5 bridge j in spanning the space between the hopper and the molding-machine.
1n operating sand molding-machines of the character herein referred to it has been found that the face of the sand in the flask, when compressed, was curved outward to a greater or less degree, notwithstanding the fact that the compressor device and the binder were perfectly flat. lt hasbeen determined that this resulted from the springing of the binder, 5 and no amount of sti ffening of the binder has so far been effective in overcoming this diieulty. I have found by allowing a vent at the upper part of the flask for the escape of confined air this objection was overcome. To afford such a vent, I have provided the -binder t with projections t at points next to the flask, or such projections may be made upon the flask. YVith this construction, during the process of compressing the confined air makes 5 its way through the sand, leaving passages.
which form complete vents for the escape of the gases when the molten metal is poured -into the molds in casting.
The binder otherwise is constructed and apf plied to the machine substantially as in my Patent No. 332,834.
It is not original with me to automatically .move the sand-drawer of a moldingmachine from thehopper to the flask and back again,
5 and hence my invention in this particular consists in the new combination of the old returnscrew with the removable drawer,as herein- ,weas-await. A
after particularly claimed. Furthermore, the
provision of vent holes in thc binder of a moldingmaehine is not original with me, and with reference to this feature my invention resides in providing projections at the corners to separate the binder and flask sufficiently to vent the flask. Heretofore, in order to get a square fit of the binder on the flask, so as to prevent warping and other evil consequences of a bad llt, the meeting parts had to be planed down level at great cost of time and considerable outlay of money, and'with not always satisfactory results. By using the corner proj ections I not only vent the flask, but in order to get a square fit of the parts have only a few square inches to plane instead of several square feet, and always insure a perfect fit.
Vhat I claim isl. In a sand moldingrmaehine of substantially the construction set forth, a sand-hopper and a drawer beneath it for conveying a charge of sand from the hopper to the flask to be filled, combined with means for moving such drawer when filled from the hopper to the flask and returning it to the hopper when its charge has been deposited in the flask, the same consisting of the return-screw m, the traveler o, arranged in suitable guides on the frame of the machine and engaging the thread of the return-screw to be traversed back and forth therein, and the rod n, connecting the traveler and drawer to transmit the motion of the return-screw through the traveler to the drawer, substantially as and for the purpose specified.
2. In a sand molding-machine, a sand-hopper, a sanddrawer arranged therein, means to move it to carry the charge of sand to the flask, anda/*movable bottom for said drawer supported on holders attached to the drawer, and guards secured to the sides ofthe drawer and covering the space between the drawer and its bottom, combined substantially as described. f
3. In a sand molding-machine, a sand-hopperA provided with a movable drawer, an independently-movable bottom for said drawer,
' and a return-screw, combined with a traveler, and a slotted rod connecting the traveler and bottom, and a stop connecting the drawer and bottom, substantially as and for the purpose described.
4. The combination, in a sand molding-machine, of a flask to receive the charge of sand, and a binder to cover the flask while molding or compressing the sand, and projections t', interposed between the flask and binder, to separate the-two sufficiently to vent the flask while the compression of the sand is going on, substantially as described.
In testimony whereof I have hereunto set my this 18th day of January, A. D. 1886.
ARTHUR RICE.
XVtIie/sses:
CHARLES H. Gresos,
WM. T.' HALE.
ico
iro
izo 4
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