US761224A - Molding-machine. - Google Patents

Description

No. 761,224. PATENTED MAY. 31, 1904.

F. W. HALL. MOLDING MAG'HINE.

APPLICATION FILED JULY 11. 1903.

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No. 761,224. PATBNTED MAY 31, 1904. P. W. HALL. MOLDING MACHINE.

APPLICATION FILED JULY 11. 1993.

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PATENTBD MAY 31, 1904. P. w. HALL. MOLDINGIMAGHINE. APPLICATION FILED JULY 11. 1903.

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Patented May 31, 1904.-

PATENT OFFICE.

FREDERIGKW; HALL, or CAMDEN, NEW JERSEY, ASSIGNOR OF ONE- HALF TO J. W. 'PAXSON COMPANY, OF PHILADELPHIA,

ENNSYL- VANIA, CORPORATION OF PENNSYLVANIA. a

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 761,224, dated May 31, 1904. Application filed July 11, 1903. Serial No. 165,045. (E5 model.)

To all whom it may concern:

Be it known that I, FREDERICK W. HALE, a citizen of the United States, and a resident of-Oamden, in the State of New Jersey, have invented certain new and useful Improvements in Molding-Machines, of which the following is a full, clear, and exact description, refer' is'moved upward under suitably-controlled power-operated devices against a cross-head for properly compressing or ramming the sand- The general objects of the invention are to provide such type of machine wherein the parts shall be simple in construction, readily operable for the purpose of ramming the sand about the patterns, and thereafter separating the patterns from the mold-cavities and where- 'in the different operations shall have such dependent relations to the position of the crosshead that improper manipulation of the machine by careless or inattentive operatives is rendered practically impossible.

With these general objects in View the invention consists of a double telescoping base portion conjointly and independently-operable for simultaneously or independently raising and lowering the combined stripping and pattern plate supports and the stool-plate support, a cross-head movable into position above or to one side of said supports, and means for controlling the operation of the combined stripping and pattern platesupport and the stool-plate support, so that when the crosshead is in position above these. parts all of them may be simultaneously raised to effect the proper ramming of the sand in the flask and about the patterns Without possible inde In addition to these separate and combined elements the invention further consists of the parts and combinations, as will be hereinafter more fully described and then definitely pointporting-arms and pivotal connection with the base, showing the manner of operating said arms. Fig. A is a detail view, partly in section, of the base, the combined stripping-plate and pattern-plate support, thestool-pla'te support, showing also. the telescoping parts for simultaneous and independent operation of said supports. Fig. 5 is a detached front elevation of one of the cross-head side or supporting arms withso'me of the details omitted to more clearly show the piping for operating the different parts. Fig. 6 is a side view of the parts shown in Fig. 5 looking in the direction of the arrow, Fig. 5, some of the details being broken away to avoid confusion; and Fig. 7 is a detail sectional view of the auxiliary controlling-valves.

-Referring to Figs. 1 and 2, A is the supporting-base of the apparatus, and it may be of any usual or desired form. Rigidly mounted upon said support is the casting A, Figs. 2 and 4:, preferably cylindrical, which constitutcs the interior telescoping guide for the exterior main cylinder A having the head A from each side'of which project the supporting-brackets A. The upper surface A A of the supporting-brackets A A* constitutes the stripping-plate support, and projecting from the inner sides of these brackets are the lugs A A, constituting the pattern-plate supports,the said stripping-plate supports and pattern-plate supports being thus formed,- preferably, in an integral structure, although, as will be obvious, this integral formation is not essential so long as the supports A and A are connected to move in unison, and I may designate them for identification as the combined strippingplate and pattern-plate support said rods 0 0 plate and pattern-plate support. Projecting inward of the casting or guide A is the flange a, to which is secured a fixed cylinder B, Fig. 4, by means of a suitable flange b and bolts Z), although any usual or desired fastening means may be employed to. retain the cylinder B fixed within the casting A. Telescoping Within the fixed cylinder B is an interior or stoolplate plunger B, preferably made as a hollow casting for lightness and to lit the cylinder B, its entire length to act as a guide for the plunger in its up and down movements, the lower end of the plunger being closed by the head 7)". Secured to the upper portion of the plunger B is the stool-plate support C, having the upwardly-extending posts 0 c, the upper surfaces 0 c of which are substantially in the plane of the stripping-plate support A as seen in Fig. 1. Projecting from each of the corners of the stool-plate support C are the perforated lugs 0 0 which, passing through suitable vertical slots in the supporting brackets A A", embrace the guide-rods 0 which extend between the side lugs c c at the Sides of brackets A A", whereby when rising or falling movement is given the stool-plate support with relation to the combined stripping;

serve to steady the stool-plate support and arms 0 c and guide the same accurately. By referring to Fig. 4 it will be noted that between the flange I) of the cylinder B and the under surface of the head A there is a space into which leads a fluid-supply pipe M for raising the main cylinder and its connected stri-pping'and pattern plate supports A and -A, and it will also be noted that as said main cylinder A is thus raised by air or other fluid it will carry with it the stool-plate support C,

since the head A of the mainv cylinder will.

j the combined stripping-plate support and pattern-plate support shall move vertically, and

in order to accomplish this result more eflieientlyI have provided the exterior main cylinder A with side lugs A having suitable vertical perforations which embrace fixed guiderqds .A asshown in Fig. 2, extending upward from the base of the telescoping guide A. These guide-rods A extend into suitable recesses in the lower part of the combined strippingplate and pattern-plate support, whereby said support is guided in its up-and-down movement, and in order that the downward movement of the main exterior cylinder A shall not transmit shocks and other undesirable vibrations and jars I have provided in the lower part of the lugs A recesses A, and seated in these recesses springs A have been provided, which serve to check in a gradual manner the downward movement'of the main exterior cylinder A and consequently give .a yieldingeheck to the downward movement the contained patterns, as willbeunde rstood,

and that by such verticalmovement. ofthese parts simultaneously the necessary ramming or compression of the sand in the flask and about the pattern will be secured. Upon the exhaust of the fluid through the pipe M these parts will conversely simultaneously move to the lowered position, as shown in Figs. land 4, the stool-plate support at such times resting by its weight upon the head A of the exterior main cylinder A, as willbe understood, and thereby partaking of its movement. The action thus described having rammed the sand in the flask, it becomes necessary to withdraw the patterns from the sand, and this is secured by the admission of the motive fluid through the pipe N beneath the interiorcylinder or plunger B, whereupon the stool-plate support C, with its upward-extending arms 0, will be moved upward, during which time the combined stripping-plate support and patternplate support will remain stationary. This movement of the stool-plate support C will engage by the upper surfaces of the arms 0 the stripping-plate and raise it, together with the flask, away from the patterns, as will be obvious.

Pivoted to the upward-extending brackets D, secured to thesupportirig-base A, are the side arms D D of the cross-head D the pivotal connection of said arms to the portions D being shown in Figs. 1, 2, and 3 as formed by suitable bolts D D suitable stops D D" being provided to limit the swinging movement of the side arm-s of the cross-head upon their pivots D The cross-head D may have secured thereto at its under surface a suitable block, as D, of a size to effect the proper ramming of sand in the flask, the said crosshead being carried by an adjusting-screw D, projecting upward from the side arms D and held in adjusted position by suitable clamping-nuts D In order to effect the movement of the cross-head, a simple cylinder (Z is provided, the same being pivoted at d to a bracket (Z said cylinder having connected thereto a suitable pipe, as O, for the supply of motor fluid thereto in any suitable manner,

so as to effect the desired reciprocation of the piston in said cylinder; The details of this: 'connection of the fluid-supply pipe 0 to the cylinder d form no'part of mypresent invention, and'as they are well within the scope of the ordinary mechanicfurther detailed description thereof will be unnecessary. The

piston of of said cylinder (shown by dotted lines in Fig. 3) isconnected by a rod d" to a link 0?, which is itself pivoted at d6 to the side arms of the cross-head, as shown in Figs. 1 and 3., The pivotal connection of the cylinder cl to the bracket 01 serves to turn said cylinder slightly, due to the rising-and-falling movement of its pivotal connection d with the side arms of the cross-head, as will be understood. Referring to Fig. 3 more particularly, it will be noted that the side arms of the cross-head project some distance below the pivots D and said lowerv projecting portion of the side arms is provided with a slot, as 01 in which fits a pin d of a link d said link having connected thereto the rods 0Z preferably formed as shown in Fig. 8. Suitably secured to the base of the device is a bracket (Z having pivoted at cl a cylinder d, carrying a spring d, disposed between the cross-head di connected to the rods d and the head al ofthe cylinder, whereby as the side arms of 'thecross-head swing upon their pivots d said spring is compressed within the cylinder, as

shown in Fig. 3,,and serves to cushion the downward swinging movement of the crosshead as the side arms thereof approach the stops D, said spring also serving to return the cross-head to its upright position when the motor fluid from the cylinder d exhausts' As thus far described it will be noted that the entire operation of the moving parts of the device is eflected by fluid action, such as compressed air or the like,- and in order that the operative may at times have the controlling instrumentalities in convenient position for his ready manipulation I have disposed the piping and valves leading to the various cylinders as shown in Figs. 5, 6, and 7.

Connected to one of the side arms D of the cross-head isa hood or cover E, extending upward and terminating in a supporting-bracket E in position to be within the reach of the operative.

M and N forms no part'of my present inven.

tion, and as they are well understood by those skilled in the art it is unnecessary to elucidate the matter in this connection, such cocks being simply for the admission and exhaust of the air or other fluid to and from the main cylinder A 'and the interior cylinder B for raising and lowering the stripping and pattern plate supports and the stool-plate support, respectively. From the valves M and N, respectively, the pipes M and N return downward within the hood or cover E and connect with the inlets to the main and interior cylinders, as shown in Fig. 4. Also carried upward and returned within the hood or cover E is the pipe 0, which is in constant communication with a source of compressed air or other fluid-supply, as at 0 Fig. 5, said pipe 0 being provided with a suitable two-way cock 0 of any usual or desired construction,

whereby at all times the supply of air or other fluid to or from the cylinder d for swinging the cross-head D from above the strippingplate and pattern plate supports may be controlled. By this disposition of the piping connection and the valves for controlling the fluid-supply the operative has at all times in convenient position the means for controlling all the operating parts.

It is desirable that the exterior maincylinder shall be capable of being raised only when a flask is to be rammed that is, when the cross-head D is in position above the combined stripping-plate and pattern-plate support'and that the interior cylinder or plunger connected to the stool-plate support shall be capable of being independently raised forstripping the flask and mold from the patterns only when the cross-head is moved from its position. above thecombined stripping-plate and pattern-plate support, and to this end I have provided the valves H and I, hereinbefore referred to.

Thepipe G, which connects directly with the supply-pipe G, extends parallel to the .plane of movement of the side arms D of the cross-head and separated a short distance rue therefrom, as shown in Figs. 5, 6, and 7. Discomprise a plug t, havinga perforation t and an extended stem 25", provided, with a beveled 25*, disposed between the closed end t of the tube 6, in' which the plug 25 slides, and the plug 25.

The tube It is also providedwith a perforation 25 which when the plug 6 is pressed inward by the stress of its spring will register with the perforation t in the plug and allow the compressed air or other fluid to pass into the pipes M and N, according to which of the valves is so acted upon, so that thereafter by manipulation of the cocks M or N the outer or inner cylinder A B, respectively,

may be raised and lowered. The heads of the valves H and I extend into the path of movement of one of the side arms D of the cross-head, so that when the guide-arm moves into engagement with either head it will move the valve back against the stress of its spring and close communication between the main supply-pipe G and the pipe controlled by the valve so acted upon. The valve I controls communication between the su pply-pipe G and the pipe M for operating the exterior main cylinder A and it is so disposed in pipe G that when the cross-head is in its raised position and directly above the strippingplate and pattern-plate support the side arm of the cross-head is not in contact with the head of the Valve, as shown in Figs. 6 and 7 so that communication is established between the supply-pipe Gr and pipe M, operating the exterior main cylinder. When, however, the cross-head is swung to one side, the side arm D contacts with the head of valve I and pressing back that valve shuts oif communication between the supply and pipe M, so that the exterior main cylinder carrying the strippingplate and pattern-plate supports cannot be raised. So, also, with respect to valve H. Itis disposed with relation to the side arm D of the cross-head so that when the cross-head is in position over the stripping-plate and patternplate supports the side arm D is in contact with the head of valve H and pressing back that valve against its spring shuts off communication between the main supply G and pipe N for operating the interior cylinder or plunger carrying the stool-plate support, so that the stool-plate support cannot be raised, except as it is raised by the exterior main cylinder, and when the cross-head swings to one side the side arm D releases the valve H to the action of its spring, which opens communication with pipe N, so that at such time the interior cylinder or plunger may be raised independently of the exterior main cylinder, which latter at such time is rendered inoperative by its valve I.

From the construction described it will be seen I have provided a main exterior cylinder for carrying the stripping-plate support and the pattern-plate support, and within this main cylinder I have compactly arranged the interior or secondary cylinder for above the stripping-plate and pattern-plate supports, thus providing an automatic means for preventing improper manipulation of the device. The upwardly-projecting arms carried by the stool-plate support having their upper surfaces substantially in the plane of the stripping-plate supports enables the said arms to raise the stripping-plate and the parts resting thereon upward and away from the patterns when the latter are to be drawn from the flask.

. Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a molding-machine, the combination of a main exterior cylinder carrying the stripping-plate support and the pattern-plate support, a secondary cylinder or plunger disposed within the main exterior cylinder and carrying the stool-plate support, means for supplying fluid-pressure to the main exterior cylinder to thereby simultaneously raise the stripping-plate support, the pattern-plate support, and the stool-plate support, and means for supplying fluid-pressure to the secondary cylinder to operate the stool-plate support independent of the stripping-plate and patternplate supports.

2. In a molding-machine, the combination of a main exterior cylinder carrying the stripping-plate support and pattern-plate support, a secondary cylinder or plunger disposed within the main exterior cylinder and carrying the stool plate support independent of the main exterior cylinder, said stool-plate support having upwardly-projecting portions the upper surfaces of which are in the plane of the stripping-plate support, means for supplying fluid-pressure to the main exterior cylinder to thereby simultaneously raise the strippingplate support, the pattern-plate support, and the stool-plate support, and means for supplying fluid-pressure to the secondary cylinder to operate the stool-plate support independent of the stripping-plate and pattern-plate supports.

3. In a molding-machine, the combination of a main exterior cylinder carrying the stripping-plate support and the pattern-plate support, asecondary cylinder or plunger disposed within the main exterior cylinder and carrying the stool-plate support, the exterior cylinder having guide-rods, said stripping-plate support having lugs or projections for engaging said guide-rods, means for supplying fluidpressure to the main exterior cylinder to thereby simultaneously raise the stripping-plate support, the pattern-plate support, and the stool-plate support, and means for supplying fluid-pressure to the secondary cylinder to operate the stool-plate support independent of the stripping-plate supports.

4. In a molding-machine, the combination of a main exterior cylinder having side projections, and carrying the stripping-plate supfor supplying fluid-pressure to the secondary cylinder to operate the stool-plate support independent of the stripping-plate and patternplate supports. 7

5. In amolding-machine, the combination of a supporting-frame or base, guide-rods ex tending upward therefrom, a main exterior cylinder having side projections for engagement with said guide-rods and carrying the stripping-plate and pattern-plate supports, a secondary cylinder or plunger arranged within the main exterior cylinder and carrying the stool-plate support and provided with side projecting portions, guide-rods carried by the main exterior cylinder'and engaged by the said projecting portions of the stool -plate support, and means for supplying fluid-pressure to the main exterior cylinder to thereby simultaneouslyraise the stripping-plate support, the pattern-plate support, and the stoolplate support, and means for supplying fluidpressure to the secondary cylinder to operate the stool-plate support independent of the stripping-plate and pattern-plate supports.

6. In a molding-machine, the combination. of a main exterior cylinder having upwardlyprojecting arms, stripping-plate supports and pattern-plate supports carried by said arms, a secondary cylinder disposed within the main exterior cylinder and carrying the stool-plate support, arms projecting upward therefrom and having their upper surfaces in the plane of the stripping-plate support, and means for supplying fluid-pressure to the main exterior cylinder to thereby simultaneously raise the stripping-plate support, the pattern-plate support, and the stool-plate support, and means for supplying fluid-pressure to the secondary cylinder to operate thestool-plate support independent of the stripping-plate and patternplate supports.

7. In a molding-machine, a cross-head, a main exterior cylinder carrying the strippingplate and pattern-plate supports, a secondary cylinder arranged within the main exterior cylinder, a stool-plate support carried thereby, arms projecting upwardly from the stool-plate support, the ends of said arms being disposed substantially in the plane of the strippingplate support, means for supplying fluid-pressure to the main cylinder for simultaneously raising and lowering the stripping-plate support, the pattern-plate support, and the stool' plate support to effect the ramming operation,

and means for thereafter supplying fluid-pressure to the secondary cylinder to raise'the stool-plate support and its upwardly-projecting arms to raise the mold from the patterns.

8. In a molding-machine, the combination of a movable cross-head, astripping-plate support, a pattern-plate support, and astool-plate support, means for simultaneously raising and lowering all of said supports to effect the ramming operation, a second means for raising and lowering the stool-plate support in separating the mold from the pattern, and devices controlled by the position of the crosshead for rendering the first-mentioned means inoperative when the cross-head is not in position for the ramming operation, and the second means inoperative when the cross-head is in said position.

tive when the cross-head is in positionto one side of said supports, and the second means inoperative when the cross-head is in position above said supports.

10. In a molding-machine, a main cylinder carrying the stripping-plate and pattern-plate supports, a secondary cylinder carrying the stool-plate supports, a cross-head pivotally mounted to swing to position either above or to one side of said supports, means for supplying fluid-pressure to the main cylinder for simultaneously raising and lowering all of said supports, a second means for supplying fluid-pressure to the secondary cylinder to independently raise and lower the stool-plate support, and devices controlled by the position of the cross-head for rendering the first of the above-mentioned means inoperative when the cross-head is in position to one side of said supports, and for rendering the second means inoperative when the cross-head is in position above said supports.

11. In a molding-machine, the combination of a main cylinder carrying stripping-plate and pattern-plate supports, a secondary cylinder carrying a stool-plate support and having upwardly projecting arms the ends of which are normally in substantially the plane of the stripping-plate support, a cross-head, pivotally-mounted side arms carrying said cross-head, separate conduits leading from a source of fluid-supply to each of said cylinders, valves disposed in said conduits and having portions projecting into the path of movement of one of the side arms of the cross-head to thereby close the valve in the conduit leading to the main cylinder when the cross-head is in position to one side of said supports, and to close the valve in the conduit leading to the secondary cylinder when the cross-head is in position above said supports.

12. In a molding-machine, the combination of a main cylinder carrying stripping-plate and pattern-plate supports, a secondary cylinder disposed within the main cylinder carrying a stool-plate support and having upwardly-projecting arms the ends of which are normally in substantially the plane of the stripping-plate support, a cross-head, pivotally-mounted side arms carrying said crosshead, separate conduits leading from a source of fluid-supply to each of said cylinders, valves disposed in said conduits and having portions projecting into the path of movement of one of the side arms of the cross-head to thereby close the valve in the conduit leading to the main cylinder when the cross-head is in position to one side of the said supports, and to close the valve in the conduit leading to the secondary cylinder when the cross-head is in position above said supports.

13. In a molding-machine, the combination of a main cylinder carrying stripping-plate and pattern-plate supports, a secondary cylinder carrying a stool-plate support, a crosshead, side arms pivotally mounted and carrying said cross-head, a bracket carried by said side arms, separate conduits leading from a source of fluid-supply to said main and secondary cylinders, said conduits leading from a point in proximity with the pivotal mounting of the side arms to and from the bracket, and valves and cocks disposed in each of said conduits adjacent the bracket.

14. In a molding-machine, the combination of a main cylinder carrying stripping-plate and pattern-plate supports, a secondary cylindercarryingastool-platesupport,across-head, side arms pivotallymounted and carrying said cross-head, abracket carried by said side arms, separate conduits leading from a source of fluid-supply to said main and secondary cylinders, said conduits leading from a point in proximity with the pivotal mounting of the side arms to and from the bracket, and valves or cocks disposed in each of said conduits adjacent the bracket, auxiliary valves also disposed with relation to each of said conduits, and means forautomatically closing one and opening the other of said auxiliary valves as the side arms are moved on their pivotal mounting. V p

15'. In a molding-machine, the combination of a supporting-frame, side arms pivotally mounted thereon and carrying'a crosshead,

'a pivotally-mounted cylinder also carried by FREDERICK W. HALL.

Witnesses:

A. FLORENCE YEEGER, A. M. BIDDLE.

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