US1484232A - Molding machine - Google Patents

Description

Feb, l?) i924,

J." J. PLEESMAN MOLDIN@ MACHINE Filed Nov. s, 1921 2 vSheets-sheet 1 g wwe/Wma feb. 19 1924.

J. J. PLESSMAN MOLDING MACHINE` 2 Sheets-Shet 2 Filed Nov.l8, 1921 *E n .N m. m., m. .m NN. ma o m o... x2 Q LA# wir 3% \d. l H. ,NH .NN @H/ QH @a ma 3 da 3 2 md ma Patented Feb. le, 1924.

OAKLAND, p Jamison, or OAKLAND, centro 1:; ai

JOHN J. rnnssMAN, or

MOLDIN G CHINE.

VApplication Bled November 8, 1921. Serial No. 513,63.

To all 'whom it may concern.:

'Be it known that I, JOHN J. Pressman", a citizen of the kUnited States, residing at Oakland, in the county of Alameda and -State of California, have invented ,cert in new and useful Improvements in Moldi -r ,-Machines,

fication. i

My invention is a molding machine, particularlyfuseful for moldin `Window sash wei lits, 'andother chilled cai'castings.,

he invention is particularly directed to a. machine for simultaneously o eratin a plurality of molds in such a way that perect 5 castings may be eadily produced in large numbers.

[Referring to the annexed drawing in which my invention is illustrated and which forms a part of this specification:

Figure 1 is a side elevati n :t my molding` machine'.

igure 2 is an end elevation of my moldin machine. i re 8 is an inside mova le mold members.

Figure 4 is a vertical section of said movable mold member taken on line 4-4 of Figure 3.

Figure 5 is a vertical sect-ion taken on line of which the'following is a spec',-

view of one of the 5---5 of Figure 4 showing the coupling" lates for coupling the movable mold memers to the shaft.

- Figure ,6 is a. side view partly in section .of e modified form of my invention.

In the drawing -1 and 2 indicate two end standards which are bolted upon two beams 3 and 4 near the ends of said beams respectively. Each standard 1 and 2 is formed ywith an inner vertical Hangs 5 and a hori- 0 zontal flange 6 extending outwardly from the upper end of said vertical flange.4 Angle irons 7 and v8 are mounted at their ends on the standards 1 and 2, the vertical flange of each of said angle irons restingagainst 5 the inside of one horizontal flange vo each of said angle irons resting: upon one of .the flanges 6 of the standards 1 and 2. 'The vertical anges -of said angle ironsare bolted by bolts 9 5 to the vertical flanges'` 5 of the standards 1 and 2 and the horizontal flanges of said angle irons being bolted bybolts 10 to the anges 6 of said standards. Bearings l1 and 12 are bolted h gf the anges 5 and thebclts 13 to the u per partof the standar s l and 2. A shaft 14 yextends 4longitudinaliy of the machine throu l1 the bearin 11 and 12 and'bas a 15 at one en which engages a thread ipside the bearing 11.. Onthe threaded end of said shaft is secured ,a hand wheel 16 for turning theshaft The shaft 14 extends throughopenings .molds 18, each of which molds lntotwomembers v19 and 20, which members have side horizontal danges 21 and 22 resti on the horizontal iianges of the angle irons and 8.respectively. In each ofthe mold members 19 and 2O is one'half of a plurality of window sashjweight impressions .23 into which the molten iron is poured to mold the sash weights, ing arranged in pairs, communicating at their upper ends with mouths 24 in the top of the' molds onehalf of said mouths being in each mold member. The mold members 17 in a plurality of is separated said impressions be- Y v20 are stationary, being secured to the angle irons 7 and 8 by bolts 25 extending through the flanges 21 and 22 and the horizontal danges of said angle irons. The'shaft` 14 as a plurality of annular grooves 25', and a pair of plates 26 and 27 provided with notches 28 and 29 are bolted to the outside of each mold member 19 respectively, with said notches surrounding said shaft and the edges of said notches resting. in said grooves, and the notched edges of said plates resting 4adjacent each other. Upon turning the shaft 14 by' the hand wheel 16, the screw 15 causes the mold members 19 to move toward or away from the Imold -members'20-.to close or open1tl1e molds'.

A collar 32 is secured to the shaft 14 adjacent the plates 26 and 27 and a spring 33 is positioned between said collar and platte. The object of this construction is to allow for expansion of the mold und of the metal within the mold.

In the .modified formbf my invention shown in Fig. 6, the .screw 15 and. hand wheel 16 is replaced by a hydraulic cylinder 35, the piston 36 of which is secured to the shaft 14. .The shaft 14 Vis moved forward or backward as the pressure is applied to either side of the piston 36.

From the foregoing description it will by bolts 3o and. 31 y .incorporated in this machine,

A. are yieldably Isimultaneously closed, and inposed of connecting e operable feature makes it'tpossible to thatl particular dividually yieldably'held closed. This iii- 7ention therefore includes the many desirable features of multiple mold casting machine and is so made that manyof the parts and complexities have been eliminated which are present 1n similar machines known to the art at this time. Its flexibility, simplicity and ability to produce castings rapidare its outstanding features. The'individually yi'eldably and multiple open or close all molds simultaneously. The ieldable feature is important. In the pouring of the molds one of them may beltille'd, the material may expand-and slightly open mold 'due to the yieldable spring feature without tending to force open the other molds which are yet to be filled. If this yieldable feature -is not usedv and a plurality of molds are rigidly connected to the operating shaft the filling and cooling of the material in one mold would tend toslightly open the remaining molds, possibly before they could be illed,.andv thus cause waste of metal through -the cracks between the parts of the mo y Havingr described my invention, I claim:

l. In a molding machine, a series of molds, each comprising two members, one member of each mold being stationary am the other being movable, a shaft to which the movable member of each mold of said series is individually yieldablyconnected` and operating means on said shaft for moving it to cause said movable mold members to move against or away from the stationary members to respectively open or close the mold.

In azmolding machine, a mold, comprising two members, a first movable niember and a second member, a third member movable with' respect to said second member. a shaft extending through said first Yand second members and connected to said third member to move the saine, a collar on rsaid shaft adjacent said first movable memand means'on said shaft for causing` ber, said first movable member to move against or away from said second member.

3. In a molding machine a supporting frame, a series of molds mounted in tandem on said frame, each of said molds comat least twoparts, one of which .is i'igidl7 attached to said frame and one of whic is movable, and an operating shaft .extending lengthwise of said frame and passing through each of said molds, said shaft being yieldably attached to said movable mold parts and constituting single means for simultaneously adjusting said movable members.

a, In a molding machine, a support, a

movable mold parts,

constituting means to y ,plurality of 4molds mounted lon said sup-l port, and means-for simultaneously yieldably closing said molds and individually yieldably holding them closed. y

5. In a molding machine, .a support, a plurality of molds mounted on said support, and means for simultaneously closing said `molds and individually yieldably lholding them closed.

6. In a molding machine a supporting frame composed of two. members spaced apart to form. a track, a series of molds mounted in tandem on saidtrack, each of said molds composed of two parts, one o said paits being movableA along said track andthe other being rigid with said track,

a shaft extending throiisgh said molds, j0ur' nals attached to said supporting frame and.

having said shaft `journaled therein, yieldable means attached to said shaft and to said said shaft and said yieldable means, simultaneously yieldably adjust said mold members with respect to each other.

7. In a'molding machine, angle irons mounted on said standards, a bearing mounted on each standard, a shaft extending through said bearings, a thread n I.. n on said shaft engaging a thread inv one of said bearings, a plurality of molds through which said shaft extends,

each mold comprising a stationary member and a movable member, and means for coupling said shaftV to the movable member of said molds so that said movable member lwill be moved against or away from said stationary` members when said shaft is rotated one way or the other. i

8. In a molding machine, a rectangular frame,.means for supporting said frame a rotatable shaft positioned parallel with the longer members of said frame and journaled midway of the length of the shorter members' of said frame, a plurality of tw'o piece molds supported at their ends in parallel positions and having openings through which said shaft passes, one part of each of said molds being bolted to said longer frame members and the other part being movable with respect to said tirst partby means of saidk shaft, means for connecting said shaft to said movablel part constituting a yielding connecting means allowing the said movable parts to yield under undue pressure, and means Afor rotating said'sliaft, said last named means causing the shaft to be moved lengthwise.`

9. The combination as Si characterized by a coil said shafta ring mounted in said groove so as to be engaged on one side by said spring and on the other side by one of said movable parts.

10. The combination as expressed claim 8 characterized by a collar on said expressed in claim Standards, two

spring, a collar on groove in said shaft, and a flat llO shaft, spaced from each of said movable that the notches Will closely fit said grooved parts, a coil spring located around said part of said shaft, all of these latter eleshaft and engaging said collar at one end, ments constituting the yielding connection 10 the other end of said spring tending to eX- above mentioned.

5 ert pressure on one of said movable parts, a .lnv testimony whereof I aix my signagroove in said shaft and 'two notched ture. plates secured to said movable member so JOHN J. PLESSMAN.

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