US1242364A - Combined squeeze and jolt ramming machine. - Google Patents

Description

T, J. MUMFORD, 20. COMBINED SQUEEZE AND JOLT RAMMING MACHINE.

APPLICATION FILED FEB. 25'. ms.

" 1,242,364. Patented Och-9,1917.

a SHHTS-SHEET 2.

T. 'I. MUMFORD, 2D.

COMBINED SQUEEZE AND IOLT RAIVIMING MACHINE. APPLICATION FILED FEB. 25. IBIS,

1 %2,54h Patented (m, 9.1917.

3 SHEETS-SHEET 3.

v V lrrwwyaws rno vms J. Melanoma, or .rLA IN'rrEnn, vnvv VJE1$ EYL To all whom map obncewnl Bait-known that, I, CE oMAs -at Plainfield inther GQunty-QtUnion-and Stateof New Jersey,;h ave invented certain new Land ;usei:'ul Improvements in Combined Squeeze :and Jolt Hamming -Machines, of avhich the following is ga specification.

. This ,inventionyrelates toimprovements in squeeze; and .j oltramming;- moldingymf chines,v that; is to say, I machines which; are capable of being .used to carry; 1 on .a squeezin 0 eration and also a 'oltrainmin' .9

eration. The invention has particular ,ref-

erence to that "type of molding. machine .;knoWn:as a high trunnion squeezer although pit issapplicable to other formsof pOWeIUQp- .erated ,molding..machines. 7 p g It is, one .of the. iprimary objects; of my invention. toeprovide; an improved molding machine ,of theeharacter specified 'Whiohis simple and economical in .cQnstructiOnand such machines, and at :j minimum expense. While, as mntedout, complete machines embodying mylinvention maygbezconstructed w le m0'22055z1 :willshow. and? describe :my in- 1 ivention as it is used in transforming: stand nion squeezer tovvhich my invention-is to -a'rd' forms ofxipmver Esqueeze .machines into i a 'combinedngolt and-;squ-ee;emach1ne.

=-lhe2forego1ng,- itogether with-such other objects as may hereinafter appeariqorq are incident :to :my invention I attain by. means of; a jc'o'nstruction :wvhichjfl have shown: in p eferred form 111 'th6= accompanyingwdraw ingsgwherembe appliedg -Fig. .2. isa similar vieW,j-but with {my improvements: eLmbodiedgtherein; Fig.

3 is an enlarged sectionjalivievv of porti on 0f} the apparatusshown Elg f 2 andiEig.

' 4is a sectional .detailwtaken-on the line J M MroRD, 2d,,a citizen of th'ezUnited States, residing v co /rerun]: sounnznn vn JOL'I RA M NGMAQHINE.

Specification of Letteislatent; V Patented flxct, 9, 191.7; Application filediehruary25,1216; i s r vol sases. i I

the machine comprisesa base? which is .preferably composed of tvvo legsformed to support a cylinden member 8, andLthe squeezing plunger QJup n Which are carried gthe moldgparts to operated upon. .Mount' ed on. thGgtQPQf the base and to the rear ,thereofjis an upstanding post 10, to the ;upperportion of which is pivoteda-ramm ng yoke 11' in Which the ramming'block .l2j1s adjustablv mounted :by' means of the -,threaded stem 13. At '1. the front, the yoke is in operative positionis; hooked over. a .pro-

ljection or lug l5. f0rmed; on the cylinden 8,

which link takesthestrain of the-squeezing.

In rde tha -th y k may b ea ly -.n pu t' d1;bef rea after a sq eezin P ratie e: theasp ng .1 g -p d 6 9 19 1 n s h .p te ting .1 atom ,lend and the y ll. at h h nd. 1 1 1 ,preS n-e is; admit ed into th b o tith cy inder 8tQsOP I tQIh p u g ill t usual manner... 1111;,tl1e. type of machine ishown' themcup leatherlfhis used in-,'place' of. the .standardgpiston.ring- V ltmnsfOrmingit iS m hine into: a comr blined (squeeze andv joltdrammingwmachine, theoperation is as follows; The plunger 9.-is

.inemoved iand .is (tapped, was; at- 18, 1,110 receive '1 The .-.p1.unger.;is, also; drilled at .plurality -01? ;poin.ts1;.t0 'provideusurgegports ;21,;;.(see' -riEigs.-w,2nancl; 3) .LThe cylinder 8 :is also-me- @moved; from ltliepmachineand the end face thereof l is, .machined for; .the attachment .of

the. j olting cylinder .22; A -.central3 opening 23 is" also drilled inthe bottom ofithe cylin- Jder, 1 SL1Ch ;.opening having; -.diameter' f. ;greater than that of the ,jolt plunger; 20, and

;it iisf tapped, as; indicated at :24; ttosreceive :the'studs'. 25 which serve .to retain the-2:1 olt- :ingcylinder 22 ...in position. Thecylinder: 22

' is provided .Wltll an .ii1let portr26 .and with an I exhaustazport Z27, the inlet. port being v preferably; controlled .by :a valve 128,1; said valve. .beingg normally; in 1 open .positionr un .of :the duct 230." The" stem 31 .ofathe r-valve .;proj ects .into :the cylinder 22 in position 'ito :gb engagedlby the .joltlplungerQO as thelat- -zter :moves downwardly; 'rlntentnediateg'eits rfthe threaded .portionfilil =-of a gjolt operating piston- 20-;vvhich 5Wlll-ib6gfl11ih6i' described.

end the plunger 20 is provided with a reduced portion 82 which provides an annular space 33 communicating'with the upper end of the inlet port 2 6. Air pressure finds its the plunger 9, such member comprising a leather ring or pad 37 which is retained: in normal posltion by means of a stifi'ening member 38, preferably sheet steel. A1r 1s introduced for a squeezing operation into the cylinder 8 beneath the impact and valve member A through the port opening 39.

When the machine is operated as a squeezer, assuming that the mold parts'have been placed in position on the plunger 9, and that the yoke has been brought into operative position and locked, air is introduced into the cylinder 8 beneath the member A through the port 39 and the plunger 9 is thereby elevated and squeezes the mold, during such operation the member A acting as a valve to close the surge ports 21 formed in'the bottom of the plunger 9; When, however, the machine is utilized for a jolt ramming operation, air is introduced into the cylinder 22 through the inlet port 26 and port openings 34 and 35,-thereby elevating the j olting plunger 20 which carries with it the plunger 9. When the plunger has been raised a distance sufficient to cause the annular chamber 33 to communicate with the exhaust port 27, there will follow, because ofthe exhaust of pressure, a re duction of pressure in the space above the valve 28 which, in conjunction with the pressure which accumulates beneath the lower o face of the valve, will cause the valve to move upwardly to closed position, covering the inlet port 26. Upon exhaust of pressure within the cylinder through the exhaust port 27 the plunger and its associated parts will fall, the impact being received by the repeated until such time as the mold. has

' been jolt rammed andthe operator turns off the valve controlling the supply of pressure to the inlet port 26. During this olt rammin o eration the sur e .orts 21 rovider means for the ready flow of the air confined in the cylinder 8, thereby preventing the formation of a vacuum and causingthe machine to operate easily. To facilitate this n operation, avport 4:0 is drilled in the wall of the plunger 9 in such position as to be uncovered when the plunger 9 reaches its upper stroke limit during jolting.

It will be seen from the foregoing that my invention is simple in character, occupies a minimum amount of space and is so constructed that it may be readily applied to standard forms of power squeezers to transform them into jolt and squeeze machines. 7 7 r v Itwill be noted that the machine as thus transformed is economical in operationbecause of the fact that a jolting piston of relatively small area is used.- For a squeezing operation, a plunger having a largeefiective area is required in order to secure the pressure requisite to properly squeeze "the mold. Such a large area, however, is-unwould waste considerable pressure. WVith a jolt plunger of small dimension, this wast age is avoided.

-I claim: I r

1. A change-over jolt attachment for a squeezer molding machine comprising a member adapted to v cooperate with the squeezer cylinder, a plunger working in said member cooperating with the squeezer plun ing said chc nge-over plunger for a jolt ramming operation. v a

2. A change-over jolt attachment for a squeezer molding machine comprising a necessary for jolting purposes and if used, TTi

, ger, and-means for supplying air for operatmember adapted to be securedto the squeezer cylinder, a plunger cooperating -with the squeezer plunger, and means for supplying air for operating said changeover plunger fora joltcramming operation;

3. A change-over jolt attachmentfor asqueezer molding machine comprising. a member adapted to be secured to .the squeezer cylinder, a plunger cooperating with the squeezer plunger, and a valve controlling the air supply for said changeover plunger to secure a j olting operation;v

v 4. A change-over jolt attachment for a squeezer molding machine comprising". a

.member adapted to cooperate with the squeezer cylinder and provided with a plunger cooperating withthe squeezer plunger and means for supplying air for a jolting operation.

squeezer molding" machine comprising a member adapted I to cooperate with, the squeezer cylinder and provided-with a pluno ger cooperating with the squeezer plunger inder adapted to be secured to the bottom ,7

5. A change-,overljolt attachment {for a of the squeezer cylinder, a plunger working therein adapted to be secured to the squeezer plunger, and means iorsupplying air for a joltin operation;

7. change-over jolt attachment for a squeezer molding machine comprising a cylinder adapted to be secured tov the bottom of the squeezer cylinder, a plunger working therein adapted to be secured to the squeezer plunger, and an automatic valve for coning in the squeezer cylinder and cooperate with the squeezer plunger, means for introducing fluid pressure under the squeezer plunger for the squeezing operation, and means for introducing fluid pressure under the jolt plunger for the jolting operation.

9. A combined jolt and squeeze ramming molding machine comprising a squeezer cylinder havingan opening in the bottom, a squeezer plunger working in said cylinder, a smaller jolt cylinder depending below the squeezer cylinder, a joltplunger movable with the squeezer plunger and projecting through the opening in the bottom of the squeezer cylinder and working in said jolt cylinder, means for introducing fluid pres' sure under the squeezer plunger for the squeezing operation, and means for introducing fluid pressure under the jolt plunger for the jolting operation.

10. A combined jolt and squeeze ramming molding machine comprising a squeezer cylinder having an opening in the bottom, a squeezer plunger working in said cylinder, a smaller jolt cylinder depending below the squeezer cylinder, a jolt plunger movable with the squeezer plunger and projecting through the opening in the bottom of the squeezer cylinder and working in said jolt cylinder, means for introducing fluid pressure under the squeezer plunger for the squeezing operation, and means for intro ducing fluid pressure under the olt plunger for the j olting operation, and valve mechanism in the jolt cylinder in position to be engaged by the jolt plunger for controlling the jolting operation. c

In testimony whereof I have hereunto signed my name.

THOMAS J. MUMFORD 2ND.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of Iatents, Washington, D. G.

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