US972107A - Apparatus for use in casting pipes. - Google Patents

Description

` am: ufo@ as, "amm Z urmculox glmm JULY 14,1909.

F l{ERBERT Y APPARATUS ECR USE IN CASTING PIPES.

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:FEEDy HERBERT, F COSHOCTGN, OHI..

To all whom 'it may con-ccm: i

lle it known that. l. Fin-:o Hnnnnm, a subvject of the King of (li'eat Britain, at present residing at. Coshocton, county of Coshocton. State of Ohio. have niade a certain new and `usefui Vliwenticn in Apparatus for Use in Casting; 1ipes,.of..vhich the following is a specification.

The invention relates to apparatus for use iii casting pipes or other articles and par-- ticularl)` .toy means employed inproperly assembling the various part's required in the casting operation.

'l`lieobject of the invention is to provide )means whereby the parts required in casting pipe sections may he quickly assembled into assembled relation and in truekand perfect relative positions.

further object is to provide meanswherehy, in assembling the niold and core preparatoiy to casting a pipe section, the paris are properly centered and protected against injury. f f

further object is. to 'provide means for ellicieutly venting the apparatusrin rase of the formation of -eases. steam or the like h v. 'the molten iron when introduced to the mold.

vespecially.' where molds and cores are eiiiployed.l it is ver)v important to assemble the core and niold in. absolntel)r centered relation. as. any deflection or variation from such relation results in the production of a faulty f pipe section and a consequent loss of time as well as of material and labor, with the expense incident thereto. Where molded or other suitably shaped pattern heads are einployed to properly shape the ends of the pipe section to he cast it is not only important to properly center the head with absolute accuracy in its relation to the inonl and the core. but it 4is also very important to protect the head against the danger of in )ury by being `broken down, crushed. warped or bent by the roi-e' striking or pressing thereaeainst while beine.' placed in assembled relation. lt is equally.important andnecessary to accurately guide the core into its assembled Specification of Letters Patent.

APIABATUS FOB,l USE IN CASTING PIAIPES.

ielation and to center the saiuein osit-ion in order to insure the production o a. per- 'fect casting of the pipe section.

It is among the special purposes of my in# vcntioii to provide means for accomplishing these alid other objects. Y

In the accompanying drawing I have shown a construction and arrangement for acconiplishin{r my objects and purposes, and

whcreiri- A Figure 1 is a View partly in side elevation and partly in longitudinal section on the line l. 1, Fig. 2, of aflask showing the relation of the mold. core and head in assembled position with the pipe section cast therein, and embodying the principles of in v invention. Fig. 2 is a transverse section on the line 2, Figa l. Fig. kIl is a broken view in section on the line 3. 3, Fig. '2, and somewhatl enlarged. Figs. 4 and 5, are detail views in transverse section, respectively taken on the lines 4. 4, and 5, :"i, Fig. 1.

, The saine part is designated by the same i Patented Oct. 4, 1910.

Appiiction ined my 14,1909. kserial No. 507,481.

The mold witliinwhich the pipe section is cast is foi-ined within a flask. which. .in

the foi-iii l have selected to illustrate the*4 principles of in v invention. comprises the two parts or halves (i. 7. adapted to be secured together in'any suitable. or convenient manner. as. for instance.. by the cot-ters and wedges indicated at 8. and which may be provided with suitable means for supportin,f r and handling the saine. The mold, indicated at 9, which may be of any suitable or desired material. usually and preferably of sand. is formed within the flask and suitably shaped and rammed therein in any well known. suitable or convenient manner, land given the .lcsired contour of interior Surface. The core l0` may be of any suitable form, shape. construction and material. Grdinarily cores are formed of sand which is applied to the exterior surface of a core bar 11, and suitably shaped or compressed' thereon b v ramining or otherwise. as may be desired. ln assembling the core and mold preparatori' to the casting operation the core is insertedV longitudinally into the mold so as to form a space between the exterior surface of the core and the interior surface of the mold into which space the molten metal is poured to forni the pipe section 12. In order to assemble the parts iii truly centered relation, I employ a plate 13, having an upturned flange lt.'adapted to engage over or against a peripheral dang-c l5. aty the vend of the flask.

The platoV lil. may he secured to the flask end.

when once fittedk into plaec in any .suitahlc or convenient' manner. p'reterahlyin a mau- `nvr vto hercadily '.lctachahlc therefrom. A

convenient means-is --hown consistingof cottcl' liolts lit'aand plus or wedges l t.

'.ln 'practiccl prefer to machine the interior surface or wall of thc tlanffc 14. in accurate `concentric relation to the exterior-wall or .Htlt'llwll any .irrcgsaritv in thc formation of the molti due to the flask ections lining impropyorly .swart-t tiigethcr. since thcplate 13. will not fit onto the end of the fiask unless the itask sections are properly and completely secured together.

The inner surface ofthe plate 13. if; re-

r`ecssed as at Q1. to receive the hase 1S. of a sand head. the flange or sleeve 19. of said head extending into the interior of the mold. This head may he formed of any suitable material, as. for instance, sand. and its function is tocoperate with the mold andthe core to shape the socket end of the pipe section to be cast. To this end it is properly shaped andramined into form to he received upon the end plate v13. before the latter is. applied tothe end of thc tiask in assembling the parts. Since this head plays a most important part in the proper shaping of the socket end of thepipe it is extremely desirahlc that it he truly centered with absolute annui-ary with reference to the mold. and, as well` with reference to the core. and since it nuts-t1 coiperate with the core any possihility of the core striking! against. crushingl or irreal-ring down the head or any part or portion thereof. or otherwise warpinff'.` bend- .ingr` or injuring the same must he avoided,

uhile at the saine time affording ample sup port hoth for the core and the postion 19 of the head. To attain these objects. l provide the end platt- 13, with acentral fiange or sleeve 2t). which extends inwardly into the fiask and forms, on its exterior surface` a hacking or support for the sleeve or portion 19 of the head. ln order to facilitate the placingr of thc head on the centering plato lil. the. central flange or sleeve Q0. may he slightly tapered exteriorly, as indicated hy the heavy line at. Fig. 5;. v f

ln order that the core may be properly supported when inserted into the mold without ha ving its weight ixnpostd on the sleeve lfl of the head, I arrange the core to be received. supported and centered on Idie central flange or sleeve Q0. of the centering: plate 13. To thisend l prefer to bevel ott the sleeve or fiange Qt), on the interior of the inner end thereof, 'as indicated at 23, and I similarl)v here] off the exterior surface of the adjacent. end of the core, as shown. In this manner l provided a metal conc socket into which is received the cone shaped end of the core thereby fortuin'` a centering support; for the conc with re erence to the mold as well as the head and without incurring the danger of injuring the head.

In order to secure absolute centering relation of the parts I propose to machine the .surfaces ofthe recess 21,and of the flange or parts when in their assembled relainto its scat'in the inner end of the central n flange or sleeve 1S) and to avoid the danger of thecore striking against the inner surface of the mold or otherwise causing injury while'the core is being inserted into its assembled position. To Athis end Iprovide the core bar 11, with an extended end 25,

adapted to pass through a centered bore 2G, of the centering plate with sufficientlooseness of fit to enable. said end to'pass freely.

through but forming.r a guide therefor.

' If desired and preferably, the centering flange or sleeve Q0, and its centering extension ha ving the bore '26. may he formed separate, from the plate 13, and fitted thereto, as for instance, by providing the centering sleeve or flange with a beveled, and pref-VV y erahly machined surface adapted to be received and to fit. the correspondingly shaped and machined seat in the plate 13, as clearly indicated at 80, Fig. 3. By making these,

parts in separate pieces the work of manufacenti-ingr the same is greatly facilitated asV is also the handling thereof, especially in 'the case of large sized molds.

It will also he seen that thelower enit surface of the mold 9, meets and bears against the surface of the head 1S. on a bevel. as indicated at 8l, instead of resting thereon squarely. The advantage of this is that in the arrangement shown l reduce the danger of crushing Vthe mold or head at this point. hut more important than this any finu that may be produced at this point in the casting operation by reason of metal being forced into the joint, is more easily and satisfactorily removed when formed at. an angle and with less dangerof injury to the finished pipe.

ln assembling the parts so far described. the flask with its mold. the centering plate, the head pattern and the core having been previously made and finished, the head.is placed in position on the end or centering flask and mold and is received and eeutered i upon the center flange of. the centeringr plate. being guided to its seat by the e.\teusiouv Z5. of the core. har operating' through the central opening 26 of the cud plate.

In order to still further insure the pro" duction of a perfect. casiingof the pipe section it is necessary to accuratelyv center the other end of the-core within the mold. This result is accomplished in accordance with my invention. by forming a collar [hun the core which is designed to hear against the interior surface ot' the mold at the upper or inetal receivingr endot the latter. In practice this collar is formed integrally with tlie core at the time the core is inadeand hybca-ring against the interior surfacev ofthe mold forms an'eflieieut 'centering means to hold the-core and mold Ain truly centered relation without resorting` to crude or improvised centering expedients which. in practice. are too often inefficient for the pinpose. -Suitable gates or passages 2S. around or through the collar 2T afford means for iutroduein;r the molten nieta] to the assembled apparatus `to produce thepipe set-tion casting.

'From the foregoing description it will he c seen that unless the flask is properly closed the centering plate will not fitoiito the ends thereof. It will also be seen that the head pattern isinade to rest entirely on machined surfaces so that it is compelled io beperfectly true and absolutely centered. n

By machining at one setting the seri-ral surfaces of the end plate all the parts eoncerncd in the centering' function of said plate are truly and accurately centered. rThe head pattern is not required to forni a seat for or to take the weight of the core. nor to contact therewith and hence is protected againstv the danger of heine injured. crushed or Warped thereby, Moreoveiz since the core is centered upon a machined ine'al surface it is more accurately and certainly centered,

than would he possible if centered upon a molded head pattern. Injury to the core or to the mold is prevented by the provision of the guide for the core while being inserted into the mold- The head patterns can be made separately and hence only a few een'- teringr plates are necessary and hy slightly tapering the hores of the heads' they can he very easily and readily placed in position on the plates.

By forming an .integral collar on the upperend of the core I ain enabled to`secure accurate t'fent'eriirgr of thc core in the upper end of thev mold. and the use at this point of separate centering heads is entirely obviated.

In the operation of introducing the.- molten metal to the apparatus to form the pipe casting, it. frequently happens that gases The core isr isteam or the like are generated within the inelosed space in which such metal is recci ved. In order to avoid damage or injury resulting troin (such gases or the like. and j'to forni vents therefor, I provide channels or grooves in the limer surface otl the recess 21., ot the centering plate: 13, inwhich the j nase 1H of the head rests, and .similar channels or grooves in thc interior surface of-tlie central flange or sleeve 2l), on which is reecivcd the sleeve wot' the head. and I form ducts'or pas iges 30, through said plate and It is obvious that many variations and. rchanges in the details of construction and arrangement; `of parts: may readily occur to Vpersons skilled in the art and still fall withl in the spirit and scope of my invention. I i, do not desire therefore, to be limited `or re- 2v stricted to the exact and specific4 details l'shown and described. But

i Having now set forth the object and nature of my invention and a construction cin-` hodying the principles thereof, and having vdescribed such constrnetioin' its objects,V purposes and mode of operation` what l claim as new and useful' and of iny own invena centering plate having a central sleeve, a -core received longitudinally within the flask and centered hy said sleeve. means carried by the other end of said core to he 'engaged means for securing theplate to the end of the flask. Y

2. 'l`he combination with a llask and molda the latter having; a flaring end surface at,

serted longitudinally into the flask and vmold, and having an integral collar thereon at: one end to engage within the mold :iljaccnt the tlarin; r end surface. thereof to cen- `ter the parts` and means for automatically centering.r the other cud of the core within the mold by the insertion of the core into the mold. v

3. The combination with a the latter liavirgr a tlaringend vsurface at, one end thereof. the mold having,t a pouring ,trate passage formed therein. adjacentits flaring end. of a core adapted to be inserted longitudinally into the tlask and mold` .and havingr an integral collar tp engage within i t-he mold adjacent the flaring end surface thereof to center the parts. and means for automatically centering` the other end' of -thetcoi'e within the mold by the insertion of the core into the mold.

L-The combination with a inolil flask, of

gases may be readily vented and dis? tion, and desire torsecure by Letters Patent;

`l. The combination witha inold flask, ofy

one end thereof. of a core adapted to be in and centered by the inold in saidvask, and

rio

flask and mold.l y

100 and having one. end extended to he engaged n an end plate having a eentral seat., and the plate having bent openings -therethrough flange to encompass the end of the flask, said i and a'i'ecess and a central'sleeve, a pattern@ sand lhead fitted over said Sleeve and rei ceired in saidseat, aeore Seated in the end i of said sleeve, the flange, ree-ese, sleeve and 'lio 'angates or passages formed in `themold surfaces of the mold and head beingr insections, the combination with a mold f ask thereiu, ofa core and a eollai formed inteseat of said plateV beingr machined to true i concentric relation. Q

5. The eoinbinatiou with a mold flask. of l a core adapted to he insterted longitudinally into the mold flank. and having,v au integral l coilar at one end to engage the mold and. center the, parla and means for automat i ically centering, the other end of the eure when inserted into the flash. f

Theeonihination with a mold flask. of.; a core having an integral collar thereon at i one-endto engage and rest on the mold l whereby said parts are. centered, means for i automatitailly eenteriuzgr the other yend ofi the core willi relation to the flask and mold around said eollar. Y

i'. 'lhe eombination '-.vith a mold flask and niold,'of a pattern sand head fitted to the end of said flask and mold Aand abutting against the. end of the mold, the meeting clined or beveled.

The eomhination with a mold flask, ofv a `eenterin,gr plate applied to theend thereof, said plate. *having a beveled ventral seat formed therein7 and a v vlindrieal eenteriug sleeve havingr a correspon:lingl'v beveled surface folie received in said seat.

tl. The combinationwith a mold flask. ind a centering plate applied to one end thereof, said plate having central. opening therethrough. of' a eore and har` said har having one end extended, and :ari"vin, T a collar at its otherend, and adapted to hr. inserted endwise into said mold flask, the extended end ofthe har entering the centralk opening of Vthe centeringplate, and the collarrrengagi-ng the inold whereby the core and liar automatically center themselves at hotli ends with reference to the. mold flask as they reach their fully inserted positions.

10. In an apparatus for use in making )ipe and mold, .said'niold having a flaring,r upper. end snr-fare, and a pouring gate formed grallw" with the core. said cori `and collar arranged to he inserted into the mold. Said collar engaging within the mold adjacent; the flaring end Surface 'thereof for centering' the core with reference t-o the mold, whereby the pouring well for the casting is coinpleted by the insertion of the core into the mold.

ln an apparatus for use in making pipe aeetious. the combination with a flask and mold, the latter havingr an integral flaringiipper end forming a pom-'iner well. and havingr a gate pamagre. of' a rore arranged to be inserted into the' mold, means for eenteringr the eore, and mold atl their lower`- ends.' and a collar formed integrallv with the eure and engaging the upper end'of'fhe ymold to renter the (fore. Said eollar roiiperating with the flarin.;r end of the meldete eouxple'e the gate.

and mold, of a (ft-uterine plate.I a pattern sami head carried thfreby and eoulaeting at its peripheral edge with the end of the moid. the meeting sui-fares of the mold and pattern head being beveled. and means for detarhahlv securing' Said plate. to the end of the flan-k.

13. The combination with-a mold flask,

tion extending into the.' mold. and a flange portion to abnf avainst the end ofthe mold. the abutting sui-fares of' the head and mold being heveled. and meanV for detaehably seein-ingf the plate to the flask.

15. The eomhinationwith a mold flask and mold. of a eentering plate having a eentral sleeveextendmg into the mold. a patterii sand head hauntr a central eylnidi'ical portion fittinpr over said sleeve. -said sand head havin a. flanie iortion to ahnt awainst Y h a l the end ofthe mold. and means for rseeurinvr vthe. eenterin; r plate to tii'e end of the flask.

n 1t". .'llieroiiiliiiiation with a mold flask, of a cone adapted to be inserted longitudinally into the mold flas and having` an integral collar thereon at one end to engage the niolil and center the parts. :i gate. and means for automatically centering,l the other end of the Veore when inserted into the flask, the grate coinniunieating with the interior ofthe mold.

In testimony whereof I have hereunto set- ,my hand in the presenee of the subscribing witnesses, on this 12th day of July, A. l). 1909.

FRED HERBERT.

lVitnesses P. F. lVALKEn, R.'L. DoxLEr.

l2. The combination with a mold flask iioA

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