USRE1897E - pierce - Google Patents

Description

UNITED" sTATEs .PATENT OFFICE.

BRADFORD B. PIERCE, 0F NEW YORK, N. Y., AND'MASON R. PIERCE, OF MANSFIELD,

MASSACHUSETTS.

- insomma ron Mamme Danni-rires..

Specification forming part of Letters Patent No. 23,703, dates April 19,y IBN); Mined lelmnry v 2s, 1865, No. v

To all 'whom it may concern.:

it known that we. BnAnronn S. Pinson, of the State, county, and city of Nev; York, and MASON R. Pinnen, of Mansfield, in the county of Bristol and State of Massachusette, have invented a new and useful improvement in molds for the manufacture offront elevation of an improved mold which constitutes a part of our invention. Fig. 2 is a perspective view of the case portion of said mold. Fig. 3 is averties] cross section of the core socket portion thereof.

Fig. lis another vertical l section of said core socket. and also of a finished pil-ie :is imide' in our mold. Fig. 5 is a perspective vic-w of' the core used with our mold. (i is; t. side elevation ofthe bevel ring which Forms the conceived end of the pipe. Fig. T is e perspective view of our improved iniiciiinr i" for use, when desired. in connection with our mold. Fig. d is u front elevation of said machinery showing :i mold in proper position For forming;` u pipe. Fig. 9 is a pian of a portion of the said machinery. Fig. l()

'is u perspective view of a modification of our said machinery. showing u very simple form thereof. Figs. 11, 12, 13, and 14 ure details of some of the samel parts represented in the other figures, und, Fig. '1.5 is a perspective view of two lengths ot' iinished pipe rep resented as put together for use.

In all the figures, similar lettersdenote similar parts.

Letters Patent of the United States were heretofore on-the first day of Au ust, 1854, obtained by the said BRADFORD PIERCE,

together with one Charles M. Pierre for an mprovement in 'molds for cement. .or

erthen tubes, oon'sigtn principally of mi? is termed in said patent a. spring' caseftobe used in combination with a core of the descri tion men for molding pi es tion YE-inailng use of sai improvement has been customary afterthe poise is mold 'and the con and can remo to place the pipe on ma side and let it stand until 1t is fully set. This method of opervation answers an excellent purpose for making pipes of comparatively sm'allI diameter, but when applied to large pipes, say of eight inches ir. diameter, experience has shown that the Weight of the pipe, when the latter To enable those skilled in the art, to construct and employ our invention, we will proceed to describe onemode in which* wev have successfully put them' into operation.

A, Fig.r l, is our improved mold. ,Itisf composed of a case a core. and whatwe term a core socket. and as shown insaid figure, the different parts of it ureI put tot.y

gether as thej,y are when in use. The case B of this mold is made ot' thin metal. oriof :my other proper material, und is cujpuhle of oeing opened, und is provided with means oi fastening its sides together, which. in the form shown in the drawing, is effected by securing strips of wood' or other rnuteriul'. l

n, (l, to tl' together by the clamp b. The core, 1, is of wood. metal. or other proper material. nud when the mold isready foruse, the case is made to stand over it, es seen at Fig. l, and is. by the stay c, Fig. ll. retained ut un equal distance from it all around, the .space left between the core and. the case being the sume in Width as the intended thickness of the Walls rl. @of the pipe to be molded. The core .socket D, is ve. very important part of our invention und as shown in the drawing, is in shape somewhat like a short cylinder and is hollow, having un internal diameter just great enough to permit the core to be made to pass through it, when desired. without the expenditure of very considerable force, und.` when constructed in vthe manner which we prefer, is, at its upper edge, provided with a beveled ring, which, in the moldin serves to form the ooncaved lower end of t e pipe, and also with a. flange or li f, which, when the case is in place, hol, it externall in pro r position 1n the mold.

The mac ery w ich we have devised. to be employed, when desired, in connection v'se sides. and holdingr them closely* with our mold, consists of a platform E, Fig. 7, which is capable of being revolved, within the frame work F, upon the conical rollers Gseen at4 Fig. 9, by means-of the hand Wheel g. This hand wheel is fixed upon the upper end of a vertical spindle h' working in suitable bearingsv iu the frame .work, and having at its other end, a pinion i whichI gears with teeth j on the perimeter of the platform E. H, H, are apertures in the platform in which inolds constructed 'in the manner already described are to be set, `to be carried around on the platform to 'be filled and then emptied for use again.

In order to properly secure the molds in the apertures while these operations arebe- Y ing performed, We have preferred to make our core sockets with ay shoulder k, formed by the underside of the projecting lip f, and to give to the apertures a diameter just great enough to receive the lower part l, of the core sockets With asnug fit, letting the shoulder rest on the top of the platform, so that the entire mold may he readily and se.A curely retained iii an upright position whilel on the platform, and may also be easily removed when it is desired to discharge. from` it the finished pipe. I, is a hopper. with an open bottom m. secured-at lone side of the frame work F, and in it are placed the in gredients of which the pipe is to be composed, preparatory to their being mixed.

Beneath the hopper is a hollow cylinder J,

' while themixing is going on.

iii which this mixing is etfected. This cylinder rests on suitable journals Working in bearings in the framework and is capable of being turned partly around by hand. one oh- ]'ect of which is to bring the opening n in it,

- shown in Fig. 14.. inline with the open bottom of the hopper l, in order to admitof the introduction into the cylinder ofthe ingredients to be mixed. Through the cylinder runs a shaft (prestihg in proper bearings in the framework. and turned by the crank y). 'Fo-this shaft are attached-what we call f mixing pins and floats. or. in other words. stirre'rsY/ and r1. which. when the shaft is rotated Igreatly facilitate the mixing. the cylinder during the operation being kept stationary. K, is a` cistern placed over one end of the hopper I. and containing water to be used in mixing the ingredients. and .r is a pipe running from the cisternaiid extending over the'hoppcr. into which. as well' .movable pin n, inserted through the rame` 'wol-k, is emplo ed to confine the stopbe tween itself an .the frame-work `as seen in Fig. 7, so as to hold the cylinder stationary while the mixing is being performed. After the mixing is completed, the cylinder is'revolved by hand partly around in the reverse direction until the stop strikes the framef work at c, when the opening m, will be just over the spout M. so that its contents can be upset or dumped into the latter to be removed to the molds to form the pipe. When the stop is at u, another pin. not seen in the drawing. but operating like the pin n, may he inserted through the frame-work to hold the cylinder stationary while its contents are being dumped.

N. N. are guides 4in which travels a double rack 0. O. which is operated by the crank l) which `turns the shaft Q, on'which is keyed anpinion R. which meshes into a spurgear S on the pinion shaft T. the leaves of which latter take into the. teeth of the racks and thereby carry them up or down according as the crank P is turned.

To the lower ends of the racks 0. O. 'is secured a concave headed `piston ll which moves up and down with the racks. V is a single rack moving in a guide lV. and opera ted by the crank X. which turns the shaft Y. on which is keyed a pinion o' which meshes into a spur gear m on another shaft {l/ which latter carrics-a second pinion z which takes into the teeth ofthe rack V and thereby raises or lowers it. The piston U constitutes a tamper. for when the pipe is to be molded. the mold is brought around on the platform underneath it. and the piston is by'the crank P driven down at intervals several times during the molding` operation upon the ingredients in the mold. so as to forcethem into all parts of the space between the core andthe case. and to consolidate them properly together. and by means of its concave head. it also. when the mold is filled, gives at its last stroke the proper convex form to the upper end of the finished pipe. Thev rack V constitutes what We .termi a. core reiiei'er for after each mold has been filled. it is carried by the platform linderlneath thisvraek and the latter is then bv thc crank4 X. forced down upon 'the core C.

-which is thus driven through the mold. and

core socket. and through the aperture H i'ni the platform. into a pit below. Anyr con-l venient device may be employed in order to arrest the movement of the platform at the proper points respectively to stop the molds under the tamper U and the core reliever V.

a*. Fig. 4 is a semisection of a finished pipe as it stands in the mold` and b*, b*, are two lengths of finished pipe connected together as lthey are when in use.

The operation ofour inventionv is very simple.Y The platform having beenlrevolved and stopped so as to bring one of the molds The tamper is then operated at intervals to filling is completed, the platform is again revolved and stopped so as to bring the filled core is discharged, the platform is once more molds in succession.

will be seen one mode of so employing it.V The tents of the` cylinder are thoroughly mixed.

ymixture is then umped into this spout, and

returned to the yplatform for further use.

under the tamper U, 'the ingredients of which the pi sare to,be com are placed in the opper I in such pro rtions relatively to each other as are suita le, and the cylinder J is rotated until the opening m, comes beneath the hopper. The c linder is then stop d and secured, ingre ients are introdue into it and suicient water from the cistern K is, from time to time, let in among them through the hopper and the opening m to effect the mixin VThe shaft o, wit-l1` its stirrers is then turne until the conwhen the cylinder is again rotated partly 1 around so as to upset it, or, in other words. bring the openin m over the spout M. The

carried away with shovels to the mold under the tamper, and thrown into it, and to facilitate this filling of the molds, we have sometimes constructed them with a flaring or funnel shaped top, as seen at c* in Fig. 1.

consolidate the materlals while the mold'is being filled and to give the convex form to the upper end of the pipe, and as soon as the mold under the-core reliever, when the latter 1s br the crank X forced down upon the core to rive it ,out into the core pit. After the revolved so as to brin the filled mold between the tamper and t e hopper I, and the mold is then removed and the i e asI soon as it has set, is taken out, an t e mold is The same operation is repeated with all the Our mold may be used without the aid of `the machine above described, and in Fig. 10,

mold with its socket is placed upon a suitable level hase, such as in this figure, which represents a platform or table 1, havingin its top an aperture large enough to receive and yhold the core socket which, with the rest of the mold, may be held in lace in it in the manner'already described. g' after being properly mined may be filled into the mold and rammed or tamped by hand..

v,hand lever 5. To this he ingredients,

2 is the mold setting in the afperture in the. table. 3 is a post a't one side o the table,

4 is a pin in this post u on which works a ever is attached a vertical rod or 'core reliever 6, which, whepg, the lever is brought over, is .forced againstl 11er do We limit ourselves to removing the cre .by forcing it through the mold case and core socket, while the latter named two parts remain stationary, as .it is evident, the core itself may be stationary and be discharged from the rest of the mold by drawing or otherwise removin the core socket and mold case from around 1t. But having described one mode in which our inventions may be put in practice Having thus vdescribed our improvements, what we claim and desireto secure by Letters Patent, is:

1. A mold consisting of a case capable of being properly secured around the material While the pipe is being molded and of being freed from the pipe whenthe molding is completed, in combination with a core, and also with a core socket having a provision for freeing the socket or pipe or both from the core, the whole operating substantially as set forth. t

2. The arrangement of the mixing apparatus and of the core relieving devices above the platform which conveys the molds, in the manner and for the purpose substantially as specified.

3. The combination of the core socket with the revolving disk which receives the core and the mold, when the diskl contains a provision for enabling the socket or pi e or both to be freed from the core, the who e operating substantially as described.w

. BRADFORD S. PIERCE.'

MASON R. PIERCE. Ttnessesz i ,Y

' A'Lnx. A. C. KLANCK,

C. D. SMITH.

roo

Images