USRE3413E - Improved machine for making drain-pipes - Google Patents

Description

UN VIrun Stearns Parete r Fries.

BRADFORD s. Pinnen, or NEW cannone, itttt'ssncsosn'rrs, Ann Mason R. PIERCE, UF WODSTGK,

YQR K.

IMPROVE!) MACHlNE FOR MAiiNG'DRAIN-PiPES.

` Specification forming part of Letters 'Patent No. 23,703, dated .April i9, 1359; Reissue No. 1,897, dated 'February 28, 1865; Reissue No. 2,841, dated January 14, i868; Reissue No. 3.4 I3, dated April 27, 3.369.

To all whom it 'may concern: i

Beit known thatwe, BRADFRD S. Pinnen, ot' New Bedforthin the State of Massachusetts, and MASON R. PIERCE, ot' Woodstockhin the State of New York,haveinvented certain' new and useful Improvements in Molds vfor the Manufacture ot' Pipes or Tubes for Drains, Fines, or other similar purposes, and alsoin maehineryto be used in connection therewith; and We hereby declare that the follon-ingis a full, char, and exact description of the same, reference being had to the drawings which accompany and form part of this specification.

Letters Patent of the United States were, on the 1stA ot' August, 1854, obtained by .the said Bradford S.Piei'ce, in conjunction with one CharlesM.Pierce, foran improvement in molds for cement or earthen tubes,c`onsi sting principallyot'whatis termed in said patci1ta.spring case, to be used, in combination with a core therein described, for the purpose ot molding" pipes or tubes of' the description above mentioned. 4

In making use ot' said improvement it has -been necessary, after the pipe or tube was molded, to lay the case, with the pipe and eore in it, down in a horizontal position, so that the core might be removed by means ot' blows from a Sledge or man1; but as at this stage ot' the manipulation the materialof the pipe would be in asot't and plastic state, the core could not be removed immediately, lest the pipe should sink or collapse and become unservieeablc. Therefore it has been customary to Wait a short time to permit the material to set somewhat before the core was taken out. When, horrever, the set had takenV place to inueh extent the jar of the blows employed to. remove the core would frequently crack the pipe and spoil it.' In addition to this,'if the pipe was large in diameter-say eight inches or upward-its own weight would, after the core was extracted, generally cause it to sagand become more or less oval in shape, and would also frequently crack it, thereby rendering it unmarltetable, and often wholly unfit for use. These evils were ofimportance, yet, notwithstanding them, this apparatus 'was' greatly superior to any in old for the purpose which had preceded it. Our present improvements, however, were devised'.

` suitabie case, a suitable core, and what we ternil a core-socket, this core-socket being so constructed end so arranged relatively te the ease and core, and so combined with them, that it holds one endet' the ease and core in proper position when the mold is put together for use, and forms er shapes one end ot'lthe pipe, thus constituting a Working portion of the mold during the whole of the inoldinp process, and is also adapted to permit. the core to be forced or moved through it,so that the ease and core may stand in u vertical position ngi-.lille the core is being extracted, and likewise supports thev case and pipe, so that the latter cannot be cracked or injured by the operation ot removg'v ing the core, or by the transferring ot' the easeand pipe-usuallyu-hilc the latter is in a more or less plastic state-From the place :there the molding is done to a convenient situation for taking,r oif the case and storing the pipe to nia--l ture for use; second, ofthe eoinbination,with the case and core-socket, ot' suitable means ot' appiying", when required,a sufficient pressure or force to remove the core through the coreu socket from the finished pipe `Without causing the injuryto the latter which the-jar ot blows upon the core would generally produce and, third, ot' certain improved machinery which. maybe advantageously used in connection with one mold, and which is hereinafter fully described.

In ih e accompanying drawings, Figure rcsents a t'ront elevation of a mold which.'v bodies the first part of our invention. 'Fi

represents one form in which the 'case portieri` Fig. 3 is.

of the mold may be constructed. vertical crossseetion ot' the core-socket portion of the mold, and Fig. 3* is a vertical section or a finished pipe as made iuourimproved apparatus.. Fig. 4 is another vertical' section of the core-socket, and Fig. 5 is a side elevation thereof, showing,` one t'orm of the part of the socket which shapes or moids one end of the pipe during the molding` process. Fig. 6

is a perspeetire View et' a form of core which.

We have used 4with our mold. Fig". 7 is a pen speetire riew ci' our improved .machinery to be employed, when preferred, in connection with our mold, and showing also one form in which we have constructed and applied our means of producing, when desired, the requisite presstails of-some of the same parts representedin the-otlier figures, Fig. 11,v et, showing a top view of a, small hopper; and Fig. 15is a perspectiveview of two lengths of iiiiished pipe put together l'or use.

hi. all the figures similar letters denote similar parts.

4 To enable those skilled iii the art to construct y and employ our inventions, we will proceed to describeone inode in which we have successfully pnt them in operation.

In Fig. \1tlie form of our mold there represented isfsflioivn with its different parts arranged and combined as they are when in op, eration. rIhe ense B of this mold may be made of thin metal or of any otherproper material, and when the mold is in use is capable of be ing efficiently closed around the material land ot' being opened, and is provided with means of fastening its sides together,'wliich in the` Vform shown in the drawings consist of strips of wood or other material, a a, secured to the sides of the case. and adapted to hold them. closely together by the application of the clamp b. Any-other construction of case, however,

having the same capacities, and any other eilicient means of fastening the sides ot the case' together, will answer the purpose.

The core C may be of wood, metal, or other proper material, and of any suitable construction, and when the niold is ready for use the case is made to stand over'it, as seen at Fig.

v1, and at its upper end is, by the stay c, Fig.

1I, or othercoi'ivenient means, retained at 'any desired distance from it, the space left between the core and the case being the samein width as the intended thickness ot' the walls d d of the pipe to be molded. I

The core-socket'D is a very important part ofour invention, as by its means we are enabled to remedy the defects of previously-exist ing molds of 'this character; As shown in the drawings, it is in shape somewhat like a short cylinder, and is t liollow,. having an internal diameter sufficient to admit withinfit the lower end of the core, and thereby hold it at any desired distance from the ease, and also to per lmit the core to be made `to pass through it while being extracted from' the finished pipe,

and in the construction shown' in the drawings is at its upper edge provided with a part, ee,

.which we term a beveled ring, and which,

in the molding, serves to form or shape the lower end of such a pipe-as'. represented, and

"the introduction into the also, preferably, with a flange or lip, f, which, when the case is in place holds it in proper position inthe mold. Any other desired con1 tour or section may, however, be givento the portion of the core-socket which forms the end of the pipe, according to thesliapewhich such end is designed to have. I'fthe end of the pipe is' to be square, the forming portion of the coresocket shouldbe iiat.

The machinery which we have devised to be employed, when preferred, in connection with E.; our mold, consists of aplattorm, E,Fig. 7, which" is capable of heilig revolved within the framework F upon the conical rollers' G and G* (seen at Fig. 9) by means ot' the hand-wheel This hand-wheel is iixed upon 4the upper end of a vertical spindle, h, working inl suitable bearings in the frame-work, and having at its other end a pinion, j, which gears with :teeth j on the perimeter ot' the platform E.A l

H El* are apertures in the platform, in vwhich molds constructed in the manner above described, or in any other manner, may be set to be carried around on the platform, to be filled and then emptied for use again. Y In order to,

properly secure the molds. inthe apertures while these operations are being performed, we'have preferred to make our core-sockets with a shoulder, k, formed by the under side of the projecting lip f, and to give to the aperturesa diameter just great enough tofreceive' the lower part., I, oi the core-sockets with a snug` tit, letting the shoulder rest on the top ot' the platform, so that theentire moldlmay be readn ily and securely retained in an supright position while on the platform', and may also be easily removed when it is desired to discharge from it the finished pipe. v il In'order tosust-.iin the core, when desired, during'the molding process, its'lowcrend may be allowed to rest upon one ot' the rollers, (l, Fig. 9. I is hopper with an Vopen bottom, in, secured/'at one side of the frame-work F, and in it m/aybc placed the ingredients of which .the pipe'is to be composed,preparatory to .their being mixed. Beneath the hopper isa hollow cylinder, J, in which this mixing may be effected. Thiscylinder'rests on suitable jonrnals working in bearings in theframe-work,

and is capable of being turnedround by hand,

one object of which is to bring the 'openingrn` in it (shown in Fig. 14) inline with, the open bottom of the hopper I, in order to fadmit of li'iider of the iiigredents to be mixed. Through the cylinder runs a shaft, o, resting in proper bearings in the frame-work and turned'by the crank p. To this shaft are attached what We call mix ing-pins and floats, or, in other. words, stirrers, q and q', which, when the shaft is rotated,

greatlyv facilitate the mixing, the cylinder during the operation being kept stationary. K is a cisterii, placed. over one end of the hopper I, and con-taining waterto be used in mixing the ingredients;` and 'r is a pipe running from the cistern. and extending over the whiehtnrns the stitntes o romper, i'or .fr, on another streit, y, which letter et hopper, into which, us Well us into the cylinder J, through the opening in, water may he l L isn stop or proieetion on the exterior or" the oylinder, so urrunged that when the eylin der is revolved suitioiontljy for to bring the stop against the frame-work ot zi the opening n in it will he in .line with the open bottom ot' the hopper I, so that the ingredients may he pnt in, und when in this position the reinomhle pin i is inserted through the framework, as seen in .Win27, so us to hold the eyiinder stotionnry while the mixing is heingperiorrned, After the mixing is completed the cyiinder is revolvedhy hund partly around in the reverse direction, until the stopstrikes the frame-work at, o, when the opening n will hejost over the spout M, so thstits contents will he upset or dumped into the lutter to he removed to the molds to forni the pipe. When tho fv another pin (not seen in the drawings, hut. operntinghlce thc-,pin ai) mugy beinserted through the framework tohold the cylinder stzit-ionnry While its contents are heine dumped.

`N ,N are gni-des, in which travels n double rook, O t), which is operated hy the ornnl; P, shnf't Q, on which is keyed n pinion, l., 'which meshes into n spiir-gesr, S, on the pinionshui't T, the leeres ot' which littA ter ruhe into the teeth of the rnohs, and there- .hy curry them np or down, seein-ding ns the ernnl; lj is turned.

llo the lower ends of the reeks 00 .securedoooneure-heiulrd piston, U, whieh. moves up and down p'itlrthe rneks.. 'lhis piston oon- Wheh the pipe is to lhe molded the inohl brought round. on the pistforln ninlernenlh it, und the piston is hystho crunk l? driven down et inter'vz'lls several times during the molding' operation upon the ingredients in the molds, so ns to loree rhein into ull ports oi' the spneo between the eorennd the ense und ltoeonsolidn to them properly together; und hen pipe ot' the i'orin shown in the drowine's is to he nitide it also hy menus ot' its oononve hond giros nt its lust strokes, il niold is tilled, the proper contrex t'orn Upper end of the finished pipe.

At Fig. 7 is shown one inode in whieh ne linvo suoeessfull'utT pnt, in operation our in'rr'ntion of combining with the core and eoi'eso menus otupplmving pressure or ioioe to reinoe the. core from the inished pipe sfithoutjer blows. ln this ignre V is o. single mehr n ing,r in n guide, l/V, and operated 'hy the crunk X, which s the shaft; Y, onwhieh islwged the pinion hielt ine-shes into n .spar

.LJJ soeond piniou, which intros into the teeth of the. roch El', end thereby raises or lowers it'. Each mold, after it has heen. filled, is hy'the motion of the platform onrried honest-h the rook, and the letter is then h1; the ornnlr X .forced down upon the noire whieh thus driven through the pipev und eorelsoeltet, and through the aperture H* in the platform hestop is ut' tern l is from time to tmele't.

tween the rollers Gi (H, Which nre arranged with sufficient; space between them for the core Vto poss, und, out into n suitu'hle pit below.

Any convenient device muy he employed` to nrrest the movement; ol' the platform at tho proper points respectively to' stop the mold under 4the tuniner Uuml the ruoli or core-1e liever V.

ufl, Fig'. 3*, is u semi-section of u finished pipe os it stands in the mohhnnd Il* b* uro two lengths otnished pipe oonneoted together as they are when in use.

lheopern tion of the rnnchinergT shown in the drawings is rery sinipie. The platform having.;` been revolved and stopped sq os to bring one of the molds under the temper U, the ingredients of which the pipes areto be oomposed nre placed in the hopper 1in suoli proportions rolatiijely to earch other as A,ure suitable., und the cylinder J is rotated until the opening n oo'ines beneath the hopper. The cylinder is then stopped and secured in this position bythe pin z', the ingredientsnre intro.- dueeil into it, und sufficient; water frol the ois in nmong them through the hopper and the opening mito eft'eet the mixing. Theshat't; o, with its stirrers,l is then turned until the contents ofthe cglinder nre thoroughly mixed, when the cylinder is again rotated purtlyrouuthso as to upset; it, or, in other Words, bring the opening.,r novel the spout; M. The mixture to that one ol" the molds which is under the bumper nod thrown into it, und tofaoiliti'lto this filling ofthe molds We lnive sometimes used n simili hopper or funnel on the tops of thon, :is seen ntc* in Fig. 1. The tamper is then operated :it intervals to consolidate the nntterinls While the mold is being lled, Iund to gire the eonrex or other desired form to the upper end ot' the pipe, and as soon as the lilling is oompleted the platform is again revolved und stopped so ns to 'bring the filled mold nnder the ruoli or coro-reliever V, While the lutter is hy the crunk X i'oreed down upon the lCore to drive it; through the pipe,` core-socket,

und rniorture E* in the platform out into the core-pit. Ai'terthe oore is discharged the platt'orin is onoe more revolved so as to bring the tlled :hold hetween the .core-reliever nud the hopper l, and the mold is then removed and the pipe, es soon us it is sulieieutly set, is teken ont und the mold is returned to the'plutforni iorinrtheruse. The same operation is re` pented with ull the molds in succession.

Our mold may he used without the sid ot' the in nehine shove desorihed, und in llig. l0 will he seen one inode or' so employing it, and also otnppi'ing our in'iproved menus of removing the eore from the iinished pipe. The mold, with its eore-soehet, is plneed upon n suituhle hase suon 'ns in this iigure, which represents o plut- 'orrn or table, '1, haring in its top on aperture large enough to reoeive und hold the ooresocket; whioh, with the rest of the mold, may bo held in .phloe in it in thoinnnner already deis then dumped into this spout and carried :muy with shovels scribed.

` against the top through the pipe, core-socket S, and table into The ingredients, after being 'properly mixed, may be filled vinto the' mold and rammed or tamped by hand. 2 is the mold,

setting in the aperture in' the table. 3 is a. post.

at one side of the table, and 4 is a pin in this post, upon which works a hand-lever,v 5. To this lever is attached ai'ertical rod, 6, which, when the lever is lbrought down, isv forced ot' the core 7 and drives it a space -or pit below the latter. In order to keep the'top ofthe core in position during the', filling process, the stay c, Fig. 1l, may, it' desired,be` employed, as previously described, to

'sustain the coro" properly in the case, and,

when preferred, the hopper ci, Figs. land 11, may be placed on the top ot' the mold. These modiiicatons of ourimprovements (illustrated in Fig. 10) will be found to be very simple, cheap, and convenient. y

`From the foregoing descriptions the nature and operation of our core-socket will be clearly understood, and we now proceed Vto state what we consider its essential features. Thesey are that it shall `be so constructed and ar-y ranged in such-a. relation to the other parts of the mold and be so combined with these other parts that it shall hold the lower end of the core at the desired distance 'from the ease, and

shall be enabled toi'orm or shape one end ofI the pipe,

and` thus constitute an active or workingvportion oi' themold during the Whole of the molding process; that it shall support thev caseand pipe, so that when the core is removed through. the aperture provided in the socket for that purpose'no cracking of the v pipe or injury to it can ensue, and so that the pipe, after it is iinislied, can by the aid of they socket be carrie in the ease iii a vertical position without injury i'rom theplace of molding to any convenient situation to be dischargedfrom the socket and case to mature for use bythe natural setting and hardening of the material; and, finally, that it shall be made asa partof the mold, separate and distinct fromvthe other parts thereof, and be so arranged and 'so combined with these other parts that it is capable of being kept continuously connected with them during the entiie operation of molding and finishing the pipe,-

by which means the core can be discharged from ythe mold through the pipe and core-socket at the same place i-n the apparatus where thel'molding. and tinishingis performed, and whereby, also, the pipe can he freed from the mold after the moldin g is tinished without the pipe and inoldcase being required to be turned end for end, which is a very inconvenient operation in practice, and which, on account of the greenness of the material at this stage ot' the manipulation, is extremely liable to cause the pipe to crack or get out of shape.

We do not confine ourselves to the precise construction of parts shown in the drawings;

nor do We limit ourselves to removingthe corek by forcing it through themold-case and coresoeket while the latter-named two parts remain stationary, as it is evident the core itself may be stationary, and that the rest of .the

mold may be discharged from it by drawing or otherwise removing the core-'socket and mold-case from aroundit, eitlierwith or witliout the application to the socket`and case of the means which we have represented,or their equivalent, for removing the core without injury to the linished pipe.

We are aware that before ourinvention drain-pipes have been made or finished inV molds containing afease and a core, and also a means or provision for' forming a shoulder onone endpjiwthe pipe, We therefore mak no claim tojmerely this; but,

Haying thus described our improvements, what'we claim as new, and desire to secure by Letters Patent, is

1. The case, in combination with the core and with the core-sockeu'wheii Athe latter is constructed and operatesin the manner herein 4 described. p

2. In a mold for molding drain-pipe, a coresocket and a ease, constructed, arranged, and

combined in the manner described, so that the coresocket shall constitute a workin g portion.

of the mold duringv the whole ot' the molding process, substantially as and vfor the purposes set forth.

' 3. The combination, witli t he core and coifesocket, ot' suitable mechanism for removing the core through the core-socket from the tinI islred pipe without injury to thel latter, sub' staiitially in the manner and for the purposes described.

4. llhe arrangement ot' the nioldcasea/nd 4core upon a suitable platform orbase in the that the pipe can be.

manner described, so molded and the coreV discharged therefrom without changing the position ot' the pipe and mold-case, substantially as set forth'.

' 5. The arrangement ot' the mixing apparatus and of the core-relieving devicesabove the platform which conveys the inolds,in the inanner and for the purpose substah tially as speci'- iied.

' 6. The combination ot'the case,core, andcoresocket with the perforated revolving d-isk, substantially as and for the purposes described.

BRADFORD S. PIERCE. MASONR. PIERCE.

W'itnesses:

SAM. P. Bun'r, ELIJAH SMITH.

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