US2477483A - Slip jacket - Google Patents

Description

July 26, 1949. H.' w. HERSHEY SLIP JACKET 2 Sheets-Sheet 1 Filed July 5l, 1947 l Il Fla. I.

INVENTOR.

HAROLD WHERSHEY ATTORNEK July 26, 1949.v H. w. HERSHEY SLIP JACKET Filed July 5l, 1947 2 Sheets-Sheet 2 l INVENTOR.

HAROLD W HERSHEY by springs and bolts.

`hereinafter from the specication and from atentecI .IuIy 26, 1949 UNITED STATES PATENT OFFICE p SLIP JACKET Harold William Hershey, Brighton, N. Y.

Application `Juny 31, 1947, seria1N0.765,o40 i rennes. (C1. 22-112) i .1 1 i, i

The present invention relates to slip jackets such as are used for holding sand molds, after the ask has been removed, and hile the castn ing is being made. i i

Sand molds `are usually either straight or tapered, that is, they are made either with vertical sides or with sides converging toward the top of the mold. Slip `jackets are open-ended so as to be readily slipped on or removed from the molds. They are usually made to iit the type of mold, which is to be held, either straight or tapered; and a straight-type jacket is not suited foruse in holding a tapered mold, or viceversa. In some cases, the slip jackets are made `in one piece. Other types "of slip `jackets have their sides welded orbolted together. All of these types of slip jackets are inflexible. They must be made precisely to t a given size and` type of mold. In some cases, slip jackets have been made,` however,with their sideshingedly connected together at one corner and held together at another corner This construction permits of easily positioning of the jacket on the mold or removing it therefrom, but j like the jackets rst described is relatively inflexible and costly. `AV primary object of the present invention is to provide a slip jacket that will be relatively cheap and that can readily and quickly be put on or taken ofi of a mold.

Another object of the invention is to provide a slip jacket that is capable of use on either a straight-Sided or a tapered mold and'thatwill accommodate itself to either type of mold.

Still another object of the invention is to pro- "Vide a slip jacket which can quickly and easily be assembled for use, but which, when disassembled, is in knocked-downcondition and will occupy Ya` minimum of `space in storage or when struction thatany size end` walls maybe assembled with anydimensionside walls, to make `quickly practicallyany size and shape of slip jacket, to t any size and shape? of m'old.

Other objects of the invention will be apparent the recital of the appended claims. i u

i V In the drawings: Y

Fig. 1 is a plan viewof `a slip jacket inade according to one embodiment of thisnvention;

Fig. 2 is aside elevational view of this slip jacket showing in full lines the positions which the sides occupy when the jacket ts over a straight-sided mold, andin dotted lines the posi- CJD . (Fig. 3);

. 2 tions which the sides occupy over a tapered mold;

Fig. 3 is a view looking at the slip jacket `from one end, showing the parts in the positions which they occupy Ywhen fitting over a straight-sided mold; A 1

Fig. 4 is a fragmentary View looking in the same direction, but showingthe parts in the positions which they occupy when the slip jacket fits over a tapered mold;

Fig. 5 is a transverse sectional View, illustrating how the parts of the jacket'are assembled; and i Fig. 6 is a corresponding view showing the assembly completed and the `parts locked together.

Referring now to `thedrawings by numerals of reference, thereis `shown a rectangular-shaped slip jacket comprising` two side plates Iii and two end plates II. The inside surfaces of al1 of `these plates, which are the surfaces which seat against the sidesof the mold, are plane. The outside surfaces of the plates are also generally plane. The `outside surfacesof the plates Iii, however, are `formed with three parallel, longitudinal reinforcing ribs I2, I2 and I2 and with a plurality of4 joining, diagonally extending reinforcing ribs I3. The longitudinal ribs I2' are intended to be opposite the parting line of the mold, while the longitudinal ribs I2 and I2" are somewhat below the top and somewhat above the bottom, respectively,iof each plate I0.

Each side plate IU is cut at its opposite ends at both top and bottom to provide the endwise projecting tongues I4. The ends I6 of each side plate IIll above the tongues I4 are inclined to the vertical, while the ends I5 of each such plate below the tongues I4 are vertical, that is, perpendicular to the tops and bottoms of the plates. Each tongue I4 has a generally plane outside surface that has formed thereon, at a point in line with Vrib I2 but spaced therefrom, an outwardly projecting locking lug 20. Each locking lug is slabbed off at one end as denoted at 2l (Fig, 5) and is rounded on the end adjacent rib I2 as denoted at 2,2. Each lug is drilled at anangle of about 45 degrees, `as denoted at 24 (Fig. 5) to provide a threaded hole which is adapted to receive a locking screw 25. These screws have conical inner ends 26 for a purpose which will appear hereinafter.` Y

Each end plate II is provided with parallel, longitudinally extending ribs 3l, SI and 3l The upper and lower ribs 3l and 3If are spaced somewhat down from the topand somewhat above the bottom, respectively, of the end plate. They extend for the full length ofthe when the jacket rits the mold. Diagonal ribs 33 connect the several horizontal ribs.

Each `end4 plate IIt is formed with-tw9 'slots 34 adjacent'itsoppositeends, respecti ly.' rlglhese extend forthe greater portion of the height of the end plate. They are of sucient height ,to

receive the tongues It and of suflcient width to A permit the tongues with their lugs 2E) to be passel readily therethrough.

One side wall 35 of each slot-34vis Wvertical.

The upper half of the other sideigvallf@ v.ciwthis. slot is also vertical and is parallel yto the s ide wall 35, but the lower'half of this side viii/allaisinclinedv to the vertical and dverges from the side wail. :35 from trie. midpoint linf-.the height. o fthe slot to the bottom thereof, :as iolealyholvn in Figs. l3 and 4. Y

Each. 1f-ib. et terminates at its. opposite ends .lati-,the -wallsa .ofsthe .slots ,34, and isIOrmea at each end with an enlarged abutment portion #33 .which has a plane-endtfacelying in theplane of athis.Y .side .Wall `315..'.of the adjacent slot 3.4. n The .abutrhents 321. form..seats ..or anvils against which 'p the inner ends 26 of thesthnmbscrews. '25 are .adaptedto seat.

. Figs. 51and .6 Vshowplrloyv a. sidegplateyllmaygbe assembled; with. an;;end. plate IfI thus illustrating .how .the four. sides An fiayllbe.ass eIl.1bled. t0 rforrn va 4 the two diierent types of slip jackets heretofore required, is obviated. Moreover, the jacket accommodates itself to and exibly engages the sides of themold. The mold does not have to 5 be forced to fit the jacket as has been the case with previous constructions where the jacket is made in one piece or with parts bolted together. After the casting has been poured, the jacket may be stripped from the mold and used to hold idlirine peering as @mi conventional practice. When `it is desired to dis'assemble the jacket, as for storage purposes, all that is v required is'to loosen and remove the screws 25 n andppass the tongues I4 back through the slots 3 4 of the end plates I I. This takes but a. moment, Whendisassembled; the slip jackets consist simrely1 gpstagtiauy fiat pates that take but little space in storage and can easily be shipped Ilat. A jacket made according to this invention, then, will occupy much liess space than any known .f ormf slip jacket...

@lisp carie alle. nffdimerisiens @1i-fthe mld be. .Q fbx adjustment. fof the locking screws 25.

.slipjac-ket. The plates ,I0 and Ilv areassembied, -5

of` cour-se, .with l.their inside plane .suriacesfacing I inwardly andy their tops uppermost. vWith two eplates '.I Grand .-I.I flieldfinithese positions, .a tongue .il 4, .oi plate gIII is passedlthrougna slotriltl offplate f-.I. I.. v.As stated, .each .slot 34. is-somewhatwider 1 than the -tongueand its .-1ug;2 0. After the lug .hasbeen passedthrougmthe'slot, theplate fI I1 is yrnoved.laterally .to the...po.sition shown,V .in Fig;

:screw :2;5; yis then Y Athreadedvv into; .theA lug.. 20 and .againstthe surfaceff. oftabutment Srl-.until the plateJs'is. firmly locked.: against the side; the.. slot.-l .andrplate .-l I .is lheldi rmlylae-ainst hie end of rib I2 of plate I .0. .In. this samejwameach side plate -.i s.asse.mb1ed with its adiacente@ sfilate tdferm the slip aketsshewn in Fie, 1

z I In use, the slip ,Jacket-is .simplypassed'overthe vmol" after the `flask.has.-bee1.1.l remQiied-therefr ffIf is, `a straight-eidedamold,:tl1e..plates.zlu..and remain .verticales-they. slip down, over-.the .mold- .If.; the molde-is tapered; .the side .platessl -endmates `vl Ii rock. on the curved .end sur.- :nees :'.Qfffthe lues 2.0: Vand v.orrpthe conical'. .ends 2 6 iofetheescrews I2.5: ftofincline. inwardly and .assume ftheshapezoffthe mold.- ThePQsitiQns assumed Joy the. .end platesfor atanereci.` mcldareshown in V.dotted linesiat :lzlf Yin-ffE'ie. 2 randf-tfneposticns assumed by thelsideL-.plates-fortthistype mold Vlare .Shownlin Fig. 4. 'I heplates i-I.-lcantiltruntiltheir n upper '.endssahut.- aeai-nstthe. 4endssl .of side 12124265.10, Whilel the plates iIfIl--oan..ti1 tuntil the tongues I II abut-against.. the.. lower,;halv es. ofa :the side walls 36 of slots 34 of plates ;.I.I. Theiful- .Qruins formed fby..the.=luss 20 andfthe.. ends .2.15 0f screw/ S25 permit theidelandlend platesto .adjust themselves automatically, to..-correspond xto -the .vshapezof fthe mold. Itlfwill:thustbef-seensthatethe V.saine jackettmay. be ...used for-` straightesidedfas :Ni/.ell ras.V .1f ori-.tapered v1'I1.. lds.and, than the ..ne.edtf.or

e: er t9 which f beting- HS and.. s amavbe seelisch to the 5G eesentialefeetiires-.her nbefor S -f th and as :fel thiesthescepe L pf.; wende.. 1- l Hav. .e-.thi.1s.;.,dese1ibed my. inrentiom .claimisz dzbottem there/Oil @each d thereonandprojectvinet-laine.rial-ivf.to11h outside th reef each haring. asiat. heirietferea hatfatcneuelwit its i h eslotfeahroi :said nd 1g ide which extends-in nerim 1gf the' .encinas arid-.tlf-

the other half of its height: .-firstsnamedxsde and-saisons; 1ug.-to..s eateasai St.; .has ...the .end plateladia- .centtos the slot;l throughfw v chiethel lug hasgibeen .passeditodocle' the, tongueaof L:willich/f.the..lug-isa .partida-the siamo secureaiside landanf.end plate 175 together, the innemendtofetheiserew. which-sem gages the end plate being formed to act as a fulcrum to permit the plates to pivot on one another to accommodate themselves to the shape of the mold.

2. A mold jacket comprising a pair of side plates and a pair oi end plates, each side plate having a tongue at each end projecting from the plate between the top and bottom thereof in prolongation of the side plate, each tongue having a lug formed thereon and projecting laterally to the outside thereof, each end plate having a slot adjacent each end, each of said slots being of greater width than the combined thickness of a tongue and lug so that a tongue with its lug may be passed throughthe slot, each of said slots having one bounding side which extends in the direction of the height of the end plate and another bounding side which for its upper half is parallel to the iirst-named side and for its lower half diverges therefrom, each side plate having the portions of its endwalls, which are above its tongues, diverging from the top ofthe end plate downwardly and the portions of its end walls which are below its tongues, extending in the direction of its height, and a screw threaded into each lug at an angle of forty-five degrees to seat against a part of the end plate adjacent to the slot, through which the lug has been passed, to lock the tongue, of which the lug is a part, in the slot to secure a side and an end plate together, the seating end of each screw being conical, and the two lugs of each side plate being rounded at their confronting sides to seat against the adjacent portions of the associated end plate, whereby the screws and lugs may act as fulcrums to permit the plates to pivot on one another.

3. A mold jacket comprising a pair of side plates and a pair of end plates, each side plate having a tongue at each end, each end plate having a slot adjacent each end through which one of the tongues may be passed, and a screw threaded into each tongue in a direction inclined both to the side plate, through the tongue of which it is threaded and to the end plate through 1he slot of which it passes, to engage the said end plate to lock the said side plate and the said end plate together.

4. A mold jacket comprising a pair of Side plates and a pair of end plates, each side plate having a tongue at each end, each tongue having a lug formed thereon which projects laterally to the outside thereof, each end plate having a slot adjacent each end through which one of the `tongues with its associated lug may be passed,

and a screw threaded into each lug in a direction inclined both to the side plate, through the lug of which it is threaded, and to the end plate, through the slot of which it passes, to engage the said end plate to lock the said side plate and the said end plate together, each of said lugs being shaped to form a iulcrum on which the associated end plate may rock to permit the jacket to accommodate itself to the shape of the mold.

HAROLD WILLIAM HERSHEY.

REFERENCES CITED The following referenlces are of record in the iile of this patent:

UNITED STATES PATENTS Number Name Date 487,851 Morris Dec. 13, 1892 1,271,752 Nute July 9, 1918 1,278,805 West Sept. 10, 1918 1,733,387 Parker Oct. 29, 1929 FOREIGN PATENTS Number Country Date

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