US750559A

US750559A - Molderjs flask and gated pattern

Info

Publication number: US750559A
Authority: US
Publication date: 1904-01-26
Anticipated expiration: 1921-01-26

Description

- No. 750,559. I. PATENTED JAN. 26, 1 904.

H. G. V IGHT.

MOLDERS FLA'SK AND GATED PATTERN.

APPLICATION rum MAY 8, 190a. 7

K0 MODEL. 2 SHEETS-SHBET l.

mifzas'ses wmw PATENTBD JAN. 26, 1904.

H. G..VOIGHT.

MOLDERS FLASK AND GATED PATTERN.

APPLICATION FILED MAY 8, 1903,

2 sums-sum 2.

N0 MODEL.

UNITED STATES.

Patented January 26, 1904.

HENRY Gr. VOIGHT, OF'NEW BRITAIN, CONNECTICUT.

MOLDERS FLASK AND GATED PATTERN.

SPECIFICATION forming part of Letters Patent No. 750,559, dated January 26, 1904. Application filed May 8, 1903. Serial No. 156,169. (No model.)

T0 on whom, it may concern:

Be it known that I, HENRY G.V01GHT, a citizen of the United States, residing in New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Molders Flasks and Gated Patterns, of which the following is a specification.

The present invention relates to gated patterns and flask mechanism particularly designed for use with such patterns when the latter are made in accordance with the present invention or possessed at least of some of the essential features thereof.

One of the objects of the present improvements is to provide a rest for the gate and the pattern or pattern-forms connected therewith, such a rest or support existing at both sides of the flask and being elongated in both directions toward the front and rear of the flask. Constructed in this manner the gated pattern resting as it does upon the lower section or drag of the flask is borne by the latter in a firm and substantial manner, and should the nature of the pattern-forms or the manner in which they are connected to the gate be such as to unbalance or present a preponderance of weight on one side of the gate a firmer and more rigid support will be presented as distinguished from those constructions in which the ends of the gate portion of the pattern are provided with no laterally-projecting supports extending well toward the front and rear. The bearing-plates which rest upon the lower section of the flask project beyond the opposite sides of the latter, thus providing means by which the gated pattern may be drawn from the drag. This extension of the bearing-plates beyond the boundaries of the flask fits the present gated pattern for use in connection with mechanism for separating it from the flask, a gated pattern construction which lends itself to use with flask-separating and pattern-drawing mechanism constituting an important feature of the present invention. It is to be understood in this connection, however, that the present invention is not limited to any particular construction of moldingmachine nor to any particular type thereof, since the aforesaid bearingplates may be utilized for cooperation with various constructions and types of devices and mechanism for drawing the pattern from the drag.

There is set forth in the drawings accompanying the present specification. an embodiment of my present improvements, together with so much of a flask-separating and pattern-drawing mechanism as will enable the method of drawing the present pattern to be readily understood.

In the drawings, Figure 1 is a perspective view of a flask constructed in accordance with the present improvements, the gated pattern being located between the closed sections of the flask. Fig. 2 is aface View of a gated pattern provided with side bearing-plates. Fig. 3 is a section on the plane of the line 3 3 in Fig. 2. Fig. I is a perspective View of a molding-machine illustrated in a more or less conventional and fragmentary way in connection with which the present pattern may be used. Fig. 5 is a detail view.

Similar characters of reference designate corresponding parts in all figures.

The general construction of the flask in so far as it embodies a cope and a drag section and in so far as the flask may or may not be of the snap variety may be the same as that of flasks now in use. Such a construction of flask is disclosed in Fig. 1, in which the cope of a snap-flask is indicated and designated by 2 and the drag or nowel by 3, each section of the flask being hinged at one of its corners and at the diagonal opposite corner having releasable means for holding the section closed. Such means in this instance consists of a pivoted latch 4, adapted to engage with anotched keeper 5. In the particular construction shown metallic wearing-plates 6 form the upper edge of the cope-section and the lower edge of the drag-section.

Across the flask from side to side thereof is adapted to extend a cross-bar 7 ,constituting the gate, and to such gate the pattern-forms are connected. In the particular gated pattern disclosed in the present drawings but one such gate is indicated, the same when properly located being situated within the flask substantially midway between the front and rear edges thereof. The patternforms-such, for instance, as those represented in a concated on each side of the gate and are connect- 'ed thereto by cross-gate portions, such as 9.

Obviously, however, various members and configurations of gates and pattern-forms may be employed without departing from the spirit of the invention.

Secured to each end of the gate 7 is a bearing-plate 10, adapted to rest upon the lower section of the flask. For the reception of such bearing-plates and to permit at the same time the front and rear edges of the flask-sections between them to contact with each other a rabbet or recess may be formed in either section of the flask or such recesses, for the bearing-plates may be formed partly in one and partly in the other section. The bearingplates 10 are elongated both toward the front and toward the rear of the flask, and, in fact, I prefer to make them of such length as to extend almost, if not quite, to the rear and front edges of the flask. The gate being secured rigidly to'the bearing-plates by riveting, soldering, or any other proper manner, a bearing for the patternthat is, the structure consisting of the connected pattern-forms, gate, and bearingplatesextends for a comparatively long distance at each side of the flask, both toward the front and toward the rear thereof. Should, therefore, the pattern-forms be of such configuration or so connected to the gate as that they tend to turn the gate about its longitudinal axis, such tendency is rendered of little or no consequence in injuriously aifecting the molds. It will be noticed, moreover, that the opposite bearing-plates are not connected at their front or rear endsin other words, that the gate and pattern-forms connected thereto are not supported by a substantially rectangular frame, two of the members of such frame being omitted. This is advantageous not only from the standpoint of decreased cost of construction, but also is of utility in permitting a better mold to be made, as with the present construction care does not have to be exercised in fitting all four members of a rectangular supporting-frame to an even bearing, such as to evenly support the structure and minimize any tendency to an irregularity in the straightsince proper devices or means may be cooperatively related with the positioned flask to draw the pattern by the aid of the projecting edges of the bearing-plates. In the particular mech-. anism which I have chosen for illustrating a means for carrying out this drawing operation a series of lifting-pins are so combined with the positioned flask as to separate the flask-sections from each other, as well as the pattern from such sections. The separation of the flask-sections and the withdrawal of the pattern from the same involves the right-line movement of both the upper section of the flask and of the pattern, and in order to insure constrained guidance in such direction suitable guide devices are provided on the flasksections, and with such guide devices the bearing-plates of the pattern are so constructed as to cooperate. In the particular construction of such guide devices indicated I have used a V-shaped upright guide-pin 11, secured to the drag-section, and along the V-shaped outer surface of such pin there works a counterpart guide 12, carried by a bracket 13, secured to the cope-section. In order to compensate for any wear or looseness that may arise from continued use or that may exist from other causes, the guide-surfaces are preferably adjustable toward each other. In this instance the-guide 12 is provided with a lateral projection 1 L, slidably mounted between guidewalls 31 on and adjustably secured, as by a pin-and-slot connection 15, to the horizontal shelf 16 of the bracket 13. The guide at each side of the flask for the bearing-plate is formed by the inclined faces of a guideblock 17, along which slide the corresponding inclined walls or edges of a notch 18 in the bearing-plate 10 at that side. Preferably such guide-block will be adjustable toward and away from the bearing-plate in order that looseness or wear of the parts may be taken up. This adjustability is provided for in this instance by clamping the block, as by a screw 180, in a channel on the inner side of the guide-pin 11, the nearness of the block to the walls of the channel in the guide-pin in which it is held being regulated by the heads of screws 19 19, which may be run out or in to alter the distance between the contacting faces of the block and the guide-pin and the screw 180 then tightened up to clamp the heads of screws 19 19 securely against the inside of the guide-pin 11. The opening in each guidepin in which the screw 180 is located is elon' gatedfor thepurpose of securing a lengthwise adjustment of the corresponding guideblock 17 to enable its upper end face to be properly positioned as a rest over which the bearing-plate at that side may slide should it be desired to withdraw the raised pattern laterally from the flask. Heads or shields 20 20 may also be provided forprotecting the guide devices.

The general operation of a flask-separating and pattern-drawing mechanism with which the present pattern is adapted to be used and a particular construction of which I have chosen for the purpose of illustrating a way in which the projecting bearing-plates may be utilized for withdrawing the pattern from the drag'involvesa sequence of movements commencing (assuming that the sand-filled flask has been pressed or rammed) with a rise of the cope until the lower edge thereof has been raised clear of the pattern. Continuedmovemerit of the mechanism thereupon simultaneously with the continued upward movement of the cope withdraws the pattern from the drag to a predetermined height. The molder or operator now removes the elevated cope the'machine and is ready to be poured;

Having premised these general statements, the description of the peculiarities of construction and operation of" the illustrated mechanism, which it is tobe understood is not shown complete in all its parts, will now be proceeded with in order that the aforesaid operation may be fully understood. Projecting downward from the cope-section,

at each side thereof, is a pair of posts 21, one" at the front and one at the rear of the sectlon, against whose lower ends corresponding hftmg-pms 22, supported on a carrier 23,

mounted on the machine-frame 24:, are adapted tocontact. These dependent projections extend outward beyond'the projecting edges of the bearing-plates 10, as clearly shown in Fig. 1, and then downward. The aforesaid lifting-pins are also designed to eflect the drawing of thepattern from the lower section of the flask, although they do not become operative to raise the pattern until after the cope has been raised to the desired distance. This delayed drawing of the pattern is accomplished by the contact of the mentioned lifting pins as they move upward, carrying the cope with the ends of dependent projections 25 on the bearing-plates of the pattern.

7 The contacting end of each lifting-pin is of such area as to afford a substantial rest for both the post dependent from the cope and the contiguous projection dependent from the pattern-bearing plate. It is to be understood, however, that the plane of the lower ends of said posts are below theplane of the lower 1 will ordinarily be governed bythe nature of the particular pattern used, the separation between the cope and pattern desired, &c. In practice also it is important that all four lifting-pins should become simultaneously operative to lift the cope and simultaneously operative to draw the pattern in order that no harmful eflects on the mold should occur.

No presser or ramming mechanism is shown in connection with the simple mechanism illustrated, since means for effecting this operation forms'no part of the present invention. This ramming may be done by mechanism or by hand and in conjunction with or without the use of a sand-match or in any of the ways well known to those skilled in the art. Upon turning the operating-handle 28 ofthe mechanism the carrier supporting the liftingpins is raised upward through the operation of suitable cams 29. The continued movement of the mechanism and the reversal thereof accomplish the sequential movements hereinbefore adverted to of the cope and pattern of the positioned flask resting on the bed or platen 30. After the cope and the pattern have been raised they may be removed from the mechanism in the order specified. The mold may now be stopped' ofl" in theusual manner to prevent the outflow of the metal through the passages made in the sand by the projecting ends of the gate and the bearingplates and necessary cores, if such there be,

set. The cope may then be, replaced upon the lifting pins' and the operating-handle given a reverse movement to permit the cope.

1 ing-plates are adapted to contact,-the contiguous edges of the flask-sections" both at the front andrear being permitted to meet by the pattern when in position.

'IIo

2. A gated pattern comprising a gate and elongated bearing-plates at the ends of such gate, extending transversely thereof substantially to'the front and rear sides of the dragsection with the upper edge of which the bearing-plate's are adapted to contact, the contigu .ous edges of the flaslrsections both at the front and rear being permitted to meet by the pattern when in position, said bearing-plates being adapted to project to beyond the sides of the flask.

3. Agated pattern comprising a gate and elongated bearing-plates at the ends of such gate and extending transversely thereof substantially to the front and rear sides of the drag-section'with theupper edge of which the bearing-plates are adapted to contact, the contiguous edges of the flask-sections both at the front and rear being permitted to meet by the pattern when in position, said bearing-plates being adapted to project beyond the sides of the flask, in combination with means for engaging with the projecting edges of said bearing-plates and withdrawing the pattern from the drag.

4. A flask having in combination, a copesection provided with downwardly-extending projections, a drag-section, guide devices for confining the cope-section to a right-line movement, a gated pattern, a notched bearing-plate at each end of the gate extending transversely thereof substantially to the front and rear sides of the drag-section with the upper edge of which the bearing-plates are adapted to contact, the contiguous edges of the flask-sections both atthe front and rear being permitted to meet by the pattern when in position, an adjustable guide-block fitting into the notch in each bearing-plate, and means cooperative with said cope projections for separating the sections of the flask and the pattern.

5. A gated pattern comprising a gate, bearing-plates at the ends of said gate, and projections extending from said bearing-plates, combined with a flask having a cope provided with dependent posts, a series of lifting-pins adapted to contact with said projections and said posts and mechanism for operating said pins 6. A flask comprising a cope-section provided with projections; and a gated pattern comprising elongated bearing:plates at the ends of the gate which extend transversely to the latter substantially to the front and rear sides of the drag-section with the upper edge of which the bearing-plates are adapted to contact, the contiguous edges ofthe flask-sections .both at the front and rear being permitted to meet by the pattern when in position, said bearing-plates projecting beyond the sides of the flask, in combination with means for engaging with the projections of the cope-section and thereby lifting the section and for cooperating with the projecting portions of said bearing-plates and lifting the pattern some time after the cope-section begins its ascent.

7 A cope-section; a drag-section, and a pattern comprising bearing portions extending beyond the sides of the assembled flask-sections substantially to the front and rear sides of the drag-section with the upper edge of which the bearing-plates are adapted to contact, the contiguous edges of the flask-sections both at the front and rear being permitted to meet by the pattern when in position, combined with a guide-pin at each side of the flask extending from one of the flask-sections; a guide-block rigid with each guide-pin; and cooperative guide devices extending from the other flask-section, the said cooperative guide device and pro ecting bearing portion at each side of the flask engaging one with said guidepin and one with said guide-block at that side.

8. A cope-section; a drag-section; and apattern comprising bearing portions extending beyond the sides of the assembled flask-sections substantially to the front and rear sides of the drag-section with the upper edge of which the bearing-plates are adapted'to contact, the contiguous edges of the flask-sections both at the front and rear being permitted to meet by the pattern when in position, combined with a guide-pin at each side of the flask extending from the drag section; a guideblock on the inside of each guide-pin; and cooperative guide devices extending from the cope-section and engaging with the outer faces of the respective guide-pins, said projecting bearing portions of the pattern each having at the side of the flask a notch the walls of which engage with the inner face of said guideblock on that side.

9. Acope-jsection; adrag-section; and a pattern comprising bearing portions extending beyond the sides of the assembled flask-sections, combined with a guide-pin at each side of the flask extending from the drag-section; a guide-block adjustably secured to the inside of. each guide-pin; brackets at oppositesides of the cope-section; and cooperative guide devices adjustably secured to each bracket and engaging with the outer face of the guide-pin at that side, said projecting bearing portions of the pattern each having at the side of the flask a notch the Walls of which engage with the inner face of said guide-block on that side.

10. A cope-section; a drag-section; and a pattern comprising bearing portions extending beyond the sides of the assembled flask-sections, combined with a longitudinally-slotted guide-pin. at each side of the flask and extending from the drag-section; a guide-block located on the inside of each guide-pin and adjustable both longitudinally and transversely of the pin; screws extending from each guideblock and constituting positioning devices for determining the lateral adjustment position of the block; a fastening screw extending through the slot in each guidepin and engaging with the block on the inside of the latter; brackets at opposite sides of the cope-section and a cooperative guide device adjustably secured to each bracket and engaging with the outer face of the guide-pin at that side, said projecting bearing portions of the pattern each having at the side of the flask a notch the walls of which engage with the inner face of said guide-block on that side.

11. A cope-section provided with downwardly-eXtending projections; a drag-section; a pattern comprising bearing portions extending beyond the sides of the assembled flasksections and having downwardly extending IIO projections adjacent to the respective projec- I tions of the cope-sections, said projections on said bearing portions terminating above the tion extending from said bearing portion of ends of the cope-section IJIOJQCtiOIlS; and guide the pattern; and mechanism for operating said devices for the flask-sections and the pattern, lifting-pins.

combined With a series of liftingpins each HENRY G. VOIGHT. 5 having a cross-sectional area suflicient to en- Witnesses:

able it to impinge against both a projection GEORGE W. TEAUT,

on the cope-section and the adjacent projec- STANLEY PARKER.