US1035956A - Casting-machine. - Google Patents

Description

J. W. FURLOW.

CASTING MACHINE.

APPLICATION FILED 1113.24, 1912.

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J. W. FURLOW.

Y CASTING MAGHINB. APPLIUATION FILED fm.24,1912.

1,035,956. Patented Aug. 2o, 1912.

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JAMES v7. FURLOW, F LAOS ANGELES, CALIFORNIA.

CASTING-MACHINE.

Specication of Letters Patent.

Patented Aug. 2o, 1912.

Application led February 24, 1912. Serial No. 679,708.

objects of the .present invention is to produce a machine of the character described in which the casting operation may be continuously repeated withv great facility.

Another object of my invention is to produce a casting machine of the character described in which the parts of the mold are retained in such a manner that the same may be opened and closed with a minimum exertion of labor on the part of the operator.

Another object of my invention is to produce a casting machine of the character described of simple form and construction.

Other objects and advantages will appear hereinafter from the following specification. Referring to the drawings, which are for illustrative purposes only: igure 1 is a planv view, partly in section, of a` casting machine embodying a form of my invention. Fig. 2 is a side elevation, partly lin section, of the device shown in Fig. 1. Fig. 3 is a front elevation of the stationary mold member. Fig. 4 is a horizontal, sectional view on line :v4-? Fig. 3. Fig. 5 is a vertical, sectional view on line :v5- m5 Fig. 3. Fi 6 is a front elevation of a modiiied form lo mold' member. Fig. 7 is a horizontal, sectional view on line :aL-m7 Fig. 6.

The casting machine comprises a frame or stationary support consisting of upper longitudinal members 1 and 2 and lower longitudinal members 3 and 4 supported on l suitable uprights 5, the uprights 5 bein connected at their upper ends by means o cross pieces 6. The members just referred to comprising the frame may be made of any sultable material. In the present instance, the members comprising the frame consist of angle irons, thereby constituting a liglht construction of great strength.

T e mold consists of a stationary member 7 and a movable member 8. The stationary member 7 consists of a body member 10 pro and flanges 12 extending outwardly from the bodl member 10. Extending rearwardly om the body member is a foot 13 adapted 'to -rest on the member 4 of the frame and to lbe secured thereto by means lof suitable bolts 14, thereby supporting the body member and the parts carr1ed thereby in a rigid position on the frame of the castfing machine. The body member 10 of the stationary member 7 is provided with a head 15 havingV a recess 16 formed inthe rear face thereof and flanges 17 extending outwardly 'therefrom, which flanges 17 rest upon the anges 12 of the member 10, being secured thereto by( means of bolts 18. The member 10 and the head 15, when secured together in the manner justl described, are

so arranged that the recess 16 lin the head 15 and the recess 11 in the member 10 register with` each other and form a cooling chamber 20. The head 15 is provided with a series of vertically disposed ribs 22 which extend into the chamber for the purpose of providing a large surface to permit the quick radiation of heat from the head 15. The cooling of the head 15 is accelerated by means of a stream of coldwater introduced into the chamber 2O by means of a pipe 24 connected in any suitable manner to a water supply, which pi e 24 extends into the lower end of the cham er 20 through the member 10 where it is-connectedto a longitudinally disposed pipe 25 provided with a series o f Aperforations 26 throu h which the water is distributed into the ower portion ofthe' chamber 20.4 The water passes upwardly between the ribs 22, becoming heated therefrom and passing out of the chamber 20 through a perforated pipe 27 longitudinally disposed within the upper portlon of the chamber 20, thence downwardly through pipe 28 to a pipe 29 which extends through the walls of the -bod member 10 to lthe exterior thereof. The body member 10 is 'also provided` with an ear 30 extending out` wardly from each side'thereof for the -purpose of supporting a pair of rods 31, the other end of the rods 31 being secured to the frame of the machine by suitable nuts 32.

n The movable mold member 8 is of the same general form and construction as the member 7 and consists of a body member The body member 35 of the lmovable mold member 8 is provided with a pair of ears 40, each of which is provided with a perforation adapted to be engaged by one of the rods 31 in such a manner that the body member 35 is freely slidable on the rods 3l. The rods 31 serve not only as supporting means for the movable mold member 8, but also serve as means for keeping the movable mold member in alinement with the stationary mold member.

The movable mold member 8 is provided with a chamber 42 formed therein in the same manner as the chamber 20 of the stationary mold member, and the head 37 of the movable mold member is provided with a plurality of vertically disposed ribs 43 of the same form and construction as those heretofore described as forming part of the head 15 of the stationary'mold member. The chamber 42 in the movable mold member 8 is provided with a cooling means which consists of a flexible inlet pipe 45 which introduces cold water into thelower portion of the chamber 42 by means of a distributing pipe of the same form and construction as thatheretofore described in the stationary mold member, chamber 42 being also provided with a flexible outlet pipe 46 for permitting the water in the chamber 42 to flowv therefrom when the same has become heated from the parts of the mold member.

The mold isl formed in the heads 15 and 37, the adjacent faces of the respective heads each containing recesses e ual to half of thedepth or thickness of ttihe object to be cast. The mold, as shown, is made for the purpose of casting sash weights of different lengt-hs. Recesses 50 are lformed in the head 15, as indicated in Fig. 3, of a depth equal to half the thickness of the sash weight, openings or gates 51 being formed at the top of each recess 50 for the purpose of affording a pouring opening through which the molten metal is poured into the mold. Recesses 52 are also shown formed in the face of the plate 15 which are adapted to be used for the purpose of molding ordinary washers, an opening or gate 53 connecting the upper recess 52 with the lower recess 52, and an opening or gate 54 connecting the upper recess 52-with the open end of the head 15.

It is understood that the head 37 is providedwith recesses of the same form as those heretofore described in the\head 15, which recesses register with the recesses in the head 15 when the movable member 8 is moved into the closed position against the stationary member 7, as indicated in Figs. 1 and 2. Vents or passages 56 are provided in the face of the heads 15 and 37, which vents connect 4at their inner ends with the respective recesses formed in the face of the plate and having their outer ends extending to the edge of the plate 4for the purpose lof permitting gases formed in the mold to escape to the exterior thereof. The upper edge ofthe heads is provided with a block 58 of re-clay or other suitable material, as indicated in Figs. 3 and 4, for the purpose of protecting the upper edge of the heads from'the melting action of the molten metal.

For the purpose of assisting in the registration of the mold members, the head 37 is provided with a tapered dowel pin 60 which extends outwardly therefrom, which pin 60 is adapted to engage a perforation 61 formed in the head 15 when the mold member 8 is moved into closed position against the member `7 v Means for operating the movable mold member 8 on the rods 31 is provided and consists of a bell-crank lever 65 pivotally mounted on a pin 66 which is supported between vertically disposed members 67 form` ing part of the frame or support of the molding machine.. The bell-crank 65 consists of a handle 65 forming one arm thereof, the other arm 68 of the bell-crank being divided or split as indicated in Fig. 1. Pivotally' mounted by means of a pin 69 in the lower end of arm 68of the bell-crank is a block 70 provided with a perforation 71 extending therethrough adapted to slid- -ably support the upper end of a rod 72, the inner movement of which rod is limited by means of a pin 73 in the end thereof. The lower end of the rod 72 is pivoted to a bracket 74 secured by means of bolts 75 to the body member 35 of the movable mold member 8. The lower ends of the split arln 68 of the bell-crank are each provided with a rounded face 77 adapted to slidably engage against a washer 78 vmounted on the rod72, a similar washer 79 being mounted on the rod 72 at the lower end thereof and adapted to bear against a bracket 74 heretofore described. f v

lMountedon the rod 72 between the washers 78 and 79 is a coil spring 80, one end of which abuts against the washer 78 and the other end of which abuts against ,the washer 79. f

The operation of the casting machine is as follows: The position of the parts of the machine, as shown in Figs. 1 and 2, illus-v trat'e the machine at the time when the mold is in'closed position and ready to be poured, the molten metal being poured between the blocks 58 of fire-brick in the upper end of the mold and passingdownwardly through the respective gates 51 and 54 into the molds formed by the recesses50 and 52 respectively in the faces of the heads 15 and 37. The molten metal when so poured is quickly chilledv by the cooling action of thev flowing water through the chamber 11 in the stational'y mold member 7 and the chamber 42 in the movable mold member 8, which action takes place so rapidly that the mold may bel opened permitting the molded articles to operation of pouring repeated. The open! ing of the mold is accomplished by' moving the handle 65 of the bell-crank 65 upwardly, which a'ction swings the splitl arm 68 of the bell-crank downwardly until the pin 73 in the rod 72 is engaged by the block 70. The continued upward movement of the handle 67 pulls the rod 72 rearwardly, thereby sliding the movable mold member 8 away from the stationar The closing ofthe mol is performed by moving the handle member 67 downwardly, which action causesv the rounded faces 77 of the lower end of the split arm 68 to press against the washer 78 on the rod 7 2, thereby compressing the spring 80 which. exerts force against the washer 79 from which the force so exerted is transmitted to the bracket 74 .on the movable mold member 8 'in such a manner that the mold member 8 is moved forwardly against the stationary member 7.

. A stop 82 is mounted on the frame of the machine in such a` position that the downward movement of the handle 67 in closing the mold is arrested at a point where the block 70 is above a straight line between the pivot 66 of the bell-crank 65 and the pivotal point of the lower end of the rod 72, in which position the spring 80 being under compression not only exerts a pressurev aga-inst the washer 79 to hold the movable mold member 8 against the stationary member 7, but also exerts a pressure agalnst the washer 78 which is transmitted to the lower end of the s lit arm 68 at a point above a straight line etween the pivotal point 66 of the bell-crank and the pivotal point of the lower end of the rod 72, which action of the spring holds the handle 67 against the stop 82 and prevents openin of the mold until the handle 67 is manual y moved upwardly.

In the form of mold members shown in Figs. 1 to 5 inclusive, the heads 15 and 37 are made of an suitable metal which is best adapted to wit stand the action of the molten metal.

In the modified form shown in Figs. 6 and 7 the head 85, which may be secured to and become a part of either the movable mold member or the stationa member, is provided with a recess 86 ormed in the face thereof, which recess is illed with a composition of molders sand or other suitable material in which the mold recess 87 is formed,

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stand the action of the molten metal may be employed so that the sand may be used for repeated casting operations.

What I claim is 1. A casting machine comprising a support, a stationary mold member, a pair of rods supported on said stationary member and said support, a movable mold member slidably supported 'on said rods, a lever pivotally mounted on said support, a block pivotally mounted in one end of said lever, a rod slidably mounted in said block, means for limiting the sliding movement of said rod in said block, means for pivotally connecting said rod to said movable mold member, elastic compression means on said rod between said lever and said movable mold member, and means for operating said lever to slide said movable mold member on said iirst named rods toward and from said stationary member.

2. A casting machine comprising a support, a stationary mold member, a pair of rods su ported on said stationary member and said support a movable mold member slidably supported on said rods, a lever pivotally mounted on said support, said lever having a divided end, a block pivotally mounted in vsaid divided end, a rod slidably mounted in said block, a bracket, on said movable mold member, means for ivotally mounting the inner end of said ro in said bracket, a pin in the outer end of said rod to limit the movement of said rod in said block, a coiled spring on said rod, a washer on said rod between one end of said spring and said block, a washer on said rod between the other end of said spring and said bracket, handle means onsaid lever, and means on said support to limit the movement of said lever.

3. A casting machine comprising a support, a stationary mold member, a pair of rods su 1ported onsaid stationary member. a movag e mold member slidably supported on said rods, a lever pivotally' mounted on said frame, a rod ivotallymounted on said movable member aving one end slidably connected to said lever, means for limiting the sliding movement of said rod, elastic compression means on said last named rod between said lever and movable member, and means for operating said lever to slide said movable member toward and from said stationary member.

. In testimony whereof, I have hereunto set my hand at Los Angeles, Ca1ifornia,'this 14th day of February, 1912.

' JAMES W. FURLOW. In presence of- Loms W. GnA'rz,

FRANK L.' A. GRAHAM.

" p :en

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