US442054A

US442054A - jones

Info

Publication number: US442054A
Authority: US
Publication date: 1890-12-02
Anticipated expiration: 1907-12-02

Description

. u e e h S m e e h S 2 S Em NU M .G D WL O M q d O M 0 w N0. 442,054.. Patented Dec. 2, 1890.

\ INVENTORZ BY an Bwuanw WITNESSES:

ATTORNEY.

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(No Model.) 2 sheetssheet 2.

W. P. JONES. MOLDING MACHINE. No. 442,054. Patented Dec. 2, 1890.

Q ii In H 2 FE d? 5.1 WITNESSES; INVENTOR:

ATTORNEY.

UNITED STATES PATENT OFFICE.

VILBUR F. JONES, OF BALTIMORE, MARYLAND, ASSIGNOR TO HOVARD CARLTON, OF SAME PLACE.

MOLDING-MACHINE,

SPECIFICATION forming part of Letters Patent No. 442,054, dated December 2, 1890.

Application filed October 11, 1890- Serial No. 367,824. (No model.)

To all whom it may concern.-

Be it known that I, WILBUR F. J ONES, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Machines for Making Car-Axle-Box Cores, of which the following is a specification.

This invention relates to a machine for making the sand cores of molds used when IO casting car-axle journal-boxes. lleretofore these cores were made of dry sand and were baked in an oven previous to placing them in the mold. Thus the sand could only be used once.

The object of this invention 'is to make the cores of what is commonly known as green sand, which can be repeatedly used. The green-sand cores made by this machine are not baked, but are supported and held together by a carcass, which makes the core firm enough without baking.

In the accompanying drawings, illustrating this invention, Figure l is a front view of the machine. Fig. 2 is a side elevation and part section of the machine, showing the case thereof lowered. Fig. 3 is a back view of the machine. Fig. 4 is a vertical cross-section of the upper portion ofthe machine, looking toward the front of the same. Fig. 5 is a vertical 3 longitudinal section of the machine, showing the case elevated. Fig. 6 is a vertical section and partial front view of the machine. Figs. 7,8, and 9 show three views of the carcass which supports and gives strength to the core.

Figs. 10 and 11 are views of the top slides. Fig. 12 shows two views of the side slides. Fig. 13 is an edge view of one of the top bridges. Fig. lat shows two views of one of the removable blocks.

4 The letter A designates the hollow frame or pedestal of the machine, which has near its bottom an outer shoulder a. From the lower shoulder a to the top the pedestal is round, like a cylinder, as at A. The cylindric portion A is hollow and at the top has an inturned flange Z1.

Resting upon the top of the cylinder A, and held in place by a tie-bolt b, is the bot tom B of the case B, which forms the core mold. This bottom B has an upward curve at its front end, and projecting from this end are lugs 0, upon which rests the chill C, which produces a smooth facing on the metal casting at the lid-opening of the finished car-axle journal-box. In the present instance this chill C also serves as the core-print which supports the front portion of the core-carcass in the sand mold while casting the metal. The one end of the tie-bolt 5', previously referred to, enters the case-bottom B, and the other end extends down the hollow cylinder A and through a disk b which takes against an inverted shoulder a in the interior of the cylinder A. The lower end of the bolt 1) has a screw-thread upon which travels a tightening- 6 5 nut b By this construction the case-bottom B is held in place on the top of the hollow cylindric pedestal.

A collar D,having at its upper end an on tside fiange cl, encircles and is vertically mov- 7o able on the cylindric pedestal A, and rests upon the outer shoulder a when lowered. (See Fig. 2.) The collar is provided with a spring-latch consisting of a bolt e, having a handle e and a spiral spring e The bolt 7 5 and spring occupy a socket e on the collar. \Vhen the encircling collar D is raised, the bolt enters a hole in the pedestal and thereby retains the said encircling collar at its raised position. The sides and ends of the case B 8: are separate from the bottom B, and at the lower edge of each side is a flange f, which is fastened to the top flange (Z of the encircling collar D by bolts or any other suitable means. The case B is open at the top, and the front 8 head E has its upper edge out out or curved down, as at g, to allow for access to the chill C. It will now be seen that by the construction here described the case B can be raised and. lowered while the bottom remains sta- 9o tionary, for the reason that the one is entirely separate from the other. \Vhen the A case B is lowered and the encircling collar D is resting upon the shoulder a, the bottom B, with the sand core, will be projecting above the case, as in Fig. 2. The bottom B extends back as far as a bridge h, which is on a higher plane and between it and the rear head E. This bridge extends across the interior of the case B, from one side to the other, and is fastened thereto. It forms a support for the back end of the core-carcass F, and also for the sand which forms the back'core-print in the space "1 The bridge 72 is raised and lowered with the case 13, and when lowered the rear core-print is free, but is supported and prevented from falling to pieces by the carcass F, the object of thus freeing the said core-printbeing to facilitate the handling of the core by the Operator.

The carcass F, previously referred to, is shown in detail in Figs. 7, 8, and 9, and gives strength to the sand core. It extends from the chill O at the front to the rear head Eof the case, This carcass F is hollow, and on [5 either side has 'projectingarms ,j, which sup port the sand that forms the core, and the front end hot the carcass passes through a hole in the chill C, and is held in position by pins Z, which take between the wall of the chill and lateral lugs 7b" 011 the projecting end 7." of the carcass. The chill-wall referred to (see Figs. 2 and 5) extends obliquely upward, so as to give the chilled face which is to form the front end of the journal-box a forward in cline toward the bottom.

Vent-holesm extend through the walls into the hollow portion of the carcass and serve to carry off the gases generated by the heating of the core while pouring the molten metal.

The carcass F does not rest on the bottom B; but its front end k is supported by the chill C and its rear end it by the bridge 70 while ramming the core. The carcass, however, does extend along and very near the bottom 5 B. The said carcass has been shown and de' scribed as being hollow; but this hollow feature is not essential, as it couldbe made otherwise and yet employed as shown.

Near the center of the case B and extend- 0 ing downward from the top edge on either side of the interior of the said case is a removable block II, which makes provision in the core for the casting in the finished journalbox of the guides which hold the brasses 4 5 in which the journals of the car-axles revolve. The blocks H are the exact shape of the guides referred to, and can be removed from the case 3 by drawing them upward by means of lateral lugs 0, which project through notches 1.)

in either side of the case B.

Two slides I I form in the core an imprint for the casting of the slideway for the upper portion of the dust-guard at the rear of the finished journal-box. These slides extend down into the case B to the center on either side and are cut out at the center to form a half-circle, so as to fit over the top portion of the car-axle. The metal in the finished casting which takes the place of the rear slide 1 forms the upper part of the back of the j our nal-box, and the space between this slide I and the slide I is for the reception of a flat dry-sand core, which forms the slide-space in which the dust-guard will be placed. These two slides I I are removed from the case by drawing them out atthe top.

Below the slide I and meeting it are two slides K, which meet in the center of the case B, Each side slide K forms a quarter-circle, and the two together form a half-circle at their inner edges, and with the lower edge of the slide I form a. complete circle. (See Fig. (5.) 'lhese slides Ii form the imprint in the core for the casting of the inner slidevva'y of the dust-guard of the finished journal-box. The side slides 11 enter the case B through slots in the side walls, and by means of a projection K can be removed by drawing them from either side of the case. Bolts L on either side of the ease B retain the slides K in position.

' he object of making the blocks H, the slides I I, and the side slides K removable is to prevent them offering any, obstruction to the lowering of the case B when it is desired to remove the sand core. The case is raised and lowered by a lever N, which is pivoted at q to an arm or standard P, e\tending upward from the base of the pedestal A. This lever has two arms, each being connected with the flange d on the encircling collar D by means of a link 1". To the other end of the two arms of the lever is attached a weight Q, which almost counterpoises the weight of the encircling collar D and the case 'B, and thus facilitates the work of the operator and makes it easier for him to raise and lower the case.

It will be seen that by the construetion'here shown and the use of the carcass F a greensand core can be made, which is much cheaper than the dry-sand cores as formerly used.

Extending across the top and near the front of the case are two removable bridges S S. One of these Shas on its under side a ridge 5, which extends across the interior of the case. This ridge 3 provides for the casting of the front stop for the front end of the journalbrasses in the journal-box. This bridge is held in place by two hooks t-one on either side of the casewhich take over pins it, one on either end of the bridge. This bridge S also serves as the means for keeping the bridge S, which is between it and the chill G, in place.

It is evident that my arrangement could be varied in many slight ways which might sug gest themselves toa mechanical mind. Hence I do not limit myself to the precise construction herein shown, but consider myself entitled to all such slight variations as come within the spirit and Scope of my invention.

Having described my invention, I claim 1. In a machine for making the sand cores used in casting car-axle journal-boxes, the combination of a cylindric pedestal supporting the bottom of the core-case, a case having sides and ends and separate from said bottom, a collar loosely encircling the said pedestal and vertically movable thereon and supporting the said case, and means to raise and lower the said collar and case.

2. In a machine for making the sand'cores used in casting car-axle j ourual-boxes, the combination of a pedestal, the bottom of a core-case held in place on the pedestal, a case having sides and ends to coact with said bottom, but separate therefrom, a chill for one end of the casting of the journal-box, a carcass having one end attached to said chill, and means to raise and lower the case without disturbing the said bottom, the chill, or the carcass.

3. In a machine for making the sand cores used in casting car-axle journal-boxes, the combination of a pedestal, the bottom of a corecase held in place 011 the pedestal, a case having sides and ends to coact with said bottom, but separate therefrom, a chill for one end of the casting of the j on rnal-box, a bridge h, fastened in the inside and extending across the rear end of the case, a carcass having one end attached to the said chill and the other to rest upon the said bridge, and means whereby to lower the case and bridge without disturbing the said bottom, the chill, or the carcass.

4. In a machine for making the sand cores used in casting car-axle journal-boxes, the combination of a pedestal, the bottom of a core-case held in place on the pedestal, a case having sides and ends to coact with said bottom, but separate therefrom, two removable 10p slides I I and two removable side slides Kin the case to provide for casting the dustguard slideway, and means whereby to lower the case without disturbing the said bottom.

5. In a machine for making the sand cores used in casting car-axle journal-boxes, the combination of a pedestal, the bottom of a core-case held in place on the pedestal, a case having sides and ends to coact with said hottom, but separate therefrom, two removable estal and vertically movable thereon and supporting the said case, and a lever connected with the said collar and carrying a weight, as and for the purpose set forth.

7. In a machine for making the sand cores used in casting car-axle journal-boxes, the combination of a pedestal, the bottom of a core-case held in place on the pedestal, a case having sides and ends to coact with said bottom, but separate therefrom, a lever to raise and lower the case, and a spring-latch to maintain the lever-and case in position when raised.

In testimony whereof I afiix my signature in the presence of two witnesses.

\VILBUR F. JONES.

Witnesses:

A. O. BABENDREIER, J NO. T. MAnnoX.