US839244A

US839244A - Molding-machine.

Info

Publication number: US839244A
Application number: US25521805A
Authority: US
Inventors: George R Williams
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-04-12
Filing date: 1905-04-12
Publication date: 1906-12-25
Anticipated expiration: 1923-12-25

Description

No. 839,244. PATENTED DEC. 25, 1 906.

G. R. WILLIAMS.

MOLDING MACHINE.

Arruonxon FILED M11112. 1905.

2 SHEETS-$13331 1A v THE NORRIS PETERS 00., WASHINGYON, n c

PATENTED DEC. 25, 1906.

G. R." WILLIAMS; MOLDING MACHINE. APLIGATIOI FILED APK.12,1905.

2 SHEETS-SHEET 2,

Sam/m5 ture wherein the weight placed upon the UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

, Patented Dec. 25,1906.

Application filed April 12, 1905. Serial No. 255.218.

To a, whom it may concern:

Be it known that I, GEORGE R. WILLIAi/rs,

a citizen of the United States, residing at Findlay, in the county of Hancock and State of Ohio, have invented a new and useful- Molding-Machine, of which the following is a specification.

This invention relates more particularly to means for forming molds for metal castings.

One of the principal objects is to provide a; novel machine of a comparatively simple na-I movable parts is substantially balanced, sof

that lateral or side strains are to a great 6X1 tent avoided, thereby eliminating abnormal binding and wearing action between the elements and maintaining the same in roper relation, thus securing high-grade mol s, and

consequently correspondingly perfect cast-f 111 S. 1 gAnother object is to provide a structure wherein the important, working parts and bearings are housed and rotected against the entrance of sand, thereby preventing the wearing and consequent looseness of said bearings from this cause.

A still further and important object is to" provide novel fiaskeelevating, means which act in conjunction with the pattern-moving means and effect the detachment of the flask-f section from its positioning means when the pattern is drawn from the mold. f The referred embodiment of the inven tion is illustrated in theaccompanying draw-f ings and is described in the following specifi cation. i Y v An ins ection of the claims hereto appended will 0 early indicate that the invention is not limited solely to the structure herein set forth. g

In said drawings, Figure 1 is a view, partly in elevation and partly in section, of themachi-ne complete and showing a set or gate of patterns and stripper-plate therefor located on said machine. Fig. 2 is a view in elevation of a portion of the machine, the side op posite to that shown in Fig. 1 being illustrated. Fig. 3 is a horizontal sectional view on the line 3 3 of Fig. 2. Fig. 4 is a top plan view of the up er portion of the machine. Fig. 5 is an end elevation of the cross-head anda portion of the crank device detached therefrom.

. the plate 11.

Similar reference-numerals designate corresponding parts in all the figures of the drawings.

In the embodiment illustrated a tubular standard 6 is employed mounted on a base comprising feet 7, radiating from the lower end of the standard and preferably downwardly inclined, as shown in Fig. 1. Upon the upper end of the said tubular standardis located a spider having radiating arms 8, carrying bosses 9 at their outer ends, in which are secured upright guide-pins 10.

This structure constitutes a support for the stripper-plates, one of which is shown at 11,

and therefore constitutes also a support for the flask-sections that-are placed upon the stripper-plate l1 in'the well-known-manner and are suitably secured in placeas, for instance, by having pinsadapted to engage in sockets 12.1ocated Movable pattern siipporting means are employed, consisting of a spider-frame 13, mounted uponthe uplper end of a vertical stem 14;, that is slidaby mounted in the tubularstandard. The spiderframe 13 has radiating arms 15, provided at their outer endswith guide-collars 16, slidably mounted on thepins 10 and connected bybraces 1 7. This spiderthus movably supports a pat ternplate 18, that carries a set or gate of patterns as, for instance, 19 wln'ch atternsslidably pass through the stripper-p ate 11 in the ordinary manner. Interpos'ed between the attern-plate and guide 16 are detachable bushings 20, arranged to receive the wear of the parts. Thus when these bushings become worn they may be removed and substitutedby new ones in order to maintain the in the opposite margins of,

pattern-plate in parallel relation to the stripper-plate.

The sliding stem 14 is guided in a suitable ICC and these openings, as well as the ends of the cross-head, are covered by a casing-section 26, surrounding the standard 6 and vertically slidable thereon, being ordinarily held against movement, however, by clamping split-ring portions 27, located at its upper and lower ends. The adjustment of the casing-section 26 is secured by a screw 28, having a conebearing 29 at its lower end with one of the feet 7 of the standard, the upper end having a threaded engagement in an ear 30, carried by the lower ring portion 27. It will thus be seen that upon loosening the ring portions 27' and turning the screw 28 the casing-sections 26 can be raised or lowered and can be clamped in any desired position by means of said ring portions.

The casing-section constitutes means for supporting the actuating mechanism of the pattern-carrying means, and said mechanism consists of a rock-shaft 31, journaled in the lower'portion of the casing-section 26 at one side of the standard and having secured to an exposed end thereof an operating-lever 32. Secured to the rock-shaft 31 within the easing-section is a crank device in the form of an arm 33, disposed in angular relation to the lever 32 and having rollers 34 journaled on its free end, which rollers operate in the guideway 23 of the cross-head 22 and against the tracks 24 thereof. It will thus be seen that when the lever is in the position shown in Fig. 1 the stem 14 will be elevated and the patterns 19 thus projected through the stripper-plate 11. On the other hand, when said lever is swun to a position to carry the rollers 34 towar the op osite end of the guide way, the patterns wilTbe moved downwardly through the stripper-plate.

For the purpose of elevating the flask-section when the patterns are drawn from the mold the following mechanism is employed: Upright rods 35 are slidably mounted on opposite sides of the standard 6 and have their upper ends forked, as shown at 36, the up er terminals of these branches or forks slida ly passing through openings 37 in the opposite margins of the stripper-plate 11. Journaled in the lower portion of the casing-section 26 and on the opposite side of the standard to the rock-shaft 31 is another rock-shaft 38,

carrying crank-arms 39, that engage beneath shoulders or annular flanges 40, formed upon the rods 35. Secured to one end of the rockshaft 38 is a crank-arm 41, having a longitudinally-disposed slot 42, and in this slot is adjustably mounted a pivot-bolt 43, connected to one end of a link 44, the other end of the link being pivoted, as shown at 45, to the operating-lever 32. A counterbalancing-weight 46 is adjustably mounted on an arm 47 and is also connected to the rocleshaft 38.

It is believed that the operation of the machine can now be made clear. The desired set of patterns are properly mounted on the supporting-spider 13 and. the coacting stripper-plate placed upon the ends of the pins or posts 10. The patterns are then elevated through the stripper-plate by swinging the lever 32 to the position shown in Fig. 1, whereupon the upper ends of the lingers or forks 36 are disposed so that they are substantially flush with the upper surface of the stripper-plate. The flask-section is placed upon the stripper-plate and is positioned in the usual manner, after which said section is filled with sand and rammed. Then the lever is swung in an opposite direction, thereby depressing the stem. 14 and drawing the patterns from the molds downwardly through the stripperqplate. At the same time the rods 35 are elevated, and consequently the flask-section is lifted from the stripper-plate and from its interlocking engagement there with. Said flask-section is thereupon removed. The other half is put in place and the operation repeated, (provided both sides of the casting are to be alike.)

It is to be noted that in this machine the lifting mechanism and operating means therefor are centrally disposed beneath the mold, thereby obviating side or binding strains and limiting to a material degree the danger of abnormal wear with a consequent looseness of parts and inaccuracy of operation. This same advantage is furthered, moreover, by housing the parts and bearings in the tubular standard and the casing-section, so that said bearings are protected from the sand and grit. Furthermore, novel and simple means are provided for elevating the flask-sections from the stripper-plate and from their interlocking engagements there with, so that the danger of tearing and break ing the molds is reduced to a minimum.

From the foregoing it is thought that the construction, operation, and many advantages of the herein-described invention, will be apparent to those skilled. in the art without further description, and it will be under stood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

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

1. In a molding-machine, the combination with a tubular standard forming an inclosed chamber, of guides mounted on and project ing above the upper end of the standard, a pattern-supporting stem slidably mounted in the standard and projecting above the same between the guides, said stem also having a portion movably located in the inclosed chamber, pattern-carrying means mounted on the upper exposed end of the standard and slidably engaging the guides, a rockshaft journaled transversely in the standard and having a portion located in the inclosed chamber and a portion disposed eXteriorly of the standard, a connection between said inclosed portion of the shaft and stem, said connection being also located in the inclo'sed chamber, and operating means connected to the eX osed portion of the shaft.

2. Iii a moldingmachine, the combination with a tubular standard forming an inclosed chamber, of a spider mounted on the upper end of the standard and carrying guides, said guides constituting supports for a stripperplate, a stem slidably mounted in the standard and having a portion movable in the inclosed chamber thereof, said stem also having a spider at its upper end located above the standard and slidably engaging the guides, said latter spider constituting a pattern-support, an actuating rock-shaft journaled on the standard and projecting into the inclosed chamber, and a movable connection between the inclosed portions of the rock shaft and the stem, said connection being also located in the inclosed chamber and thus housed within the standard.

3. In a molding-machine, the combination with fiask-supporting'means having a guide, of pattern-sup orting means movable with respect to the iask-supporting means and including a guide element disposed transversely of the line of movement of saidpattern-supporting means and movably engag-' ing in the guide of theflask-supporting means, and means engaging said guide of the pattern-supporting means to move the same', said moving means operating in the guide transversely of the line of movement of the pattern-supporting means.

4. In a molding-machine, the combination with flask-supporting means including. a standard having a guide, of pattern-supporting means movable'with respect to the flasksupporting means and including a stem having a transverse guide that movably engages in the guide of the standard, and means engaging the guide of the stem to move the same and thereby the pattern-supporting means.

5. In a molding-machine, the combination with flask-supporting means including a standard having guide openin s'or slots, of pattern-supporting means inc udinga stem slidably mounted in the standard and having a cross-head that slidably enga es in the openings or s1ots,*and means movab y engaging the cross-head for effecting the movement thereof and of the pattern-supporting means.

6. In a molding-machine, the combination with flask-supporting means including a tubular standard having oppositely-disposed guide openings or slots, of pattern-supporting means including a stem slidably mounted in the standard, a cross-head carried by the lower end of the stem and operating in the guide openings or slots of the standard, a rock-shaft journaled' on the standard, and a crank device carried by the rocloshaft and engaging the cross-head to move the same.

7. In a molding-machine, the combination with flask-supporting means, of pattern-supporting means including an upright stem slidably mounted on the flask-supportin means and having a transversely-disposed guideway, a rock-shaft journaled on the flask-supporting means and out of upright alinement with the stem, and a crank secured to the rock-shaft and having a bearing in the guideway of the stem.

8. In a molding-machine, the combination with a tubular standard, of a spider carried by the upper end of the same and having guides, another spider slidably mounted on the guides, a stem slidably mounted in the standard and connected to the latter spider, a cross-head carried by the lower end of the stem and located within the tubular standard, said cross-head having a guideway. disin its side, of movable pattern-supporting means including a stem slidably mounted in the standard, a casing-section surrounding the standard and covering the opening, a rock-shaft journaled in the casing-section and having portions located therein, and a crank device carried by the portion of the rock-shaft that is in the casing, said crank device operating through the opening in the standard and engaging in the guideway of the stem. I

10. In a molding-machine, the combination with'a tubular standard having an opening in its side, of movable pattern-supporting means including a device slidably mounted in the standard, mechanism for actuating the pattern-supporting means, said mechanism passing through the opening in thestandard and engaging said slidable device, and means mounted onthe standard for supporting the actuating mechanism thereon, said means constituting a closure-section for the standard-opening.

11. In a .molding-machine, the combination with a tubular standard having an opening in its side, of movable pattern-supportin means including a device slidably mounte in the standard, a casing-section mounted on the standard and covering the opening, and mechanism for actuatingthe pattern-supporting means, said mechanism being carried by the casing-section and furthermore passing through the standard-opening and engaging the said slidable device.

12. In a molding-machine, the combination with a tubular standard having an open ing in its side, of movable pattern-supporting means including a stem slidably mounted in the standard and having a transverse guideway at its lower end, a casing-section surrounding the standard and covering the opening, a rock-shaft journaled in the casingsection, and a crank device carried by the rock shaft, said crank device operating through the opening in the standard and engaging in the guideway of the stem.

13. In a molding-machine, the combination with a tubular standard having guideopenings in opposite sides, of movable pattern-supporting means including a stem slidably mounted in the standard, a cross-head carried by the stem and slidably engaging in the guide-openings of the standard, a casing section mounted on the standard and covering the openings, a rock-shaft journaled in the casing-section, an actuating-lever connected to the rock-shaft, and a movable connection between the rock-shaft and the crosshead.

14. In a molding-machine, the combination with a tubular standard having an opening in its side, of movable pattern-supporting means including a device slidably mounted in the standard, mechanism for actuating the pattern-supporting means, said mechanism operating through the openin in the standard and engaging said slidable device, and means adjustably mounted on the standard for supporting said actuating mechanism.

15. In a molding-machine, the combination with a tubular standard having an opening in its side, of movable pattern-supporting means including a device slidably mounted in the standard, a casing-section adjustably mounted on the standard and covering the opening, and mechanism for actuating the pattern-supporting means, said mechanism being carried by the adjustable casing-section and engaging the said slidable device.

16. In a molding-machine, the combination with a tubular standard having an opening in its side, of movable pattern-supporting means including a device slidably mounted in the standard, acasing-section adjustably mounted on the standard and covering the opening, mechanism for actuating the pattern-supporting means, said mechanism being carried by the adjustable casing-section and engaging the said slidable device, and means for adjusting the casing-section on the standard.

17. In a molding-machine, the combination with a base, of a tubular standard mounted thereon and having openings in its side, movable pattern-supporting means including a stem slidably mounted in the standard, a casing-section slidably mounted on the standard and covering the opening, a rock-shaft journaled in the casing-section, a connection between the rock-shaft and the stem, said connection operating through the standardopening, and means for adjusting the casing upon and holding the same against movement, with respect to the standard, said means including a screw interposed between the base and casing.

18. In a molding-machine, the combination with a standard, of a casing-section adjustably mounted thereon, separate rockshafts journaled on the section, pattern-elevating means slidably mounted on the standard and operated from one of the rock-shai' ts, flaskelevating .means slidably associated with the standard and operated from the other shaft, a lever connected to one of the shafts, a crank connected to the other shaft, and a link connection between the crank and lever.

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in the presence of two witnesses.

GEORGE R. WILLIAMS.

Witnesses SAMUEL Goon, MERLE D. SOURS.