US628367A - Mold for composition rollers. - Google Patents

Description

N0. 628,367. Patented July 4l |899. E. STUGH.

MOLD FUR COMPDSITION ROLLERS.

(Applicatiomled Feb. 9, 1898A (No Nudel.)

/N VENTOH 1 l l I l l l I l l l I l l l l l A TTOHNE Y S.

NITED STATES] Fries,

PATENT EUGENE STOUGH, OF SIOUX FALLS, SOUTH DAKOTA.

SPECIFICATION forming part of Letters Patent No. 628,367', dated July 4, 1899. Application flied February 9, 1898. Serial No. 669,685. (No model.) I

T0 all whom t may concern.:

Be it known that I, EUGENE SroUoH, of Sioux Falls, in the county of Minnehaha and State of South Dakota, have invented new and useful Improvements in a Combination Roller-Mold Base and Printers Composition lnking-Roller Mold-Casting Attachments and Appliances, of Which the following is a full, clear, and exactdescription.

The object of my invention is to meet the demands and requirements of the average printing establishment, and not particularly to provide an apparatus for use in an eXcluf sive business of roller-making. To this end simplicity in the construction of the parts and the economy of the methods and means employed are the essential and particular features of the invention.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming apart of this specilication, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of the device, illustrating a number of molds connected with a single feed-tube. Fig. 2 is a vertical section through lthe base portion of the feed-tube when the feed-tube is designed to supply a number of molds. Fig. 3 is avertical section through the base portion of one of the molds, and Fig. 4 is a perspective view of `the Vbushing adapted for use in connection with the base of a mold.

vThe base-filling method of casting rollers is more desirable than the old method of toplling through openingsj'in the star or spider, since it removes the liability of flaws in the product, caused by the descending composition overlapping and imprisoning air, thus forming small openings or pin-holes in the face of the roller. By theuse of the appliances comprising my invention base-illing is effected by simple, direct, eficient, practicable, and inexpensive means. It constitutes a complete casting outfit excepting melting pot or kettle, and many establishments are already supplied with these, the common pattern of which is simple and inexpensive.

The average printing establishment uses two, and sometimes three, of the standard sizes of rollers. They are usually provided with one roller-casting tube to each press, and the presses are designed to use, ordinarily, three form-rollers, and are furnished with two sets of roller cores or stocks-six in all. This provides one set of stocks for speciallytempered rollers or for reserve rollers in emergencies. My combinationbases, used in connection with my feeding apparatus to cast three rollers simultaneously, Will meet general requirements undercircu Instances where but one casting-tube is provided for each press, because if there be three sizes of presses requiring three sizes of rollers all may be cast at once-namely, one roller for each press. If all the rollers are of one size or two are of one size and the third of another size, the requirements are none the less easily met.

The combination-base-A is cylindrical in form and is usually three inches long and two and a half inches in diameter. One end 10 of the base is turned to fit casting-tubes 11, classed as eighth medium, and the opposite end 12 is turned to t tubes 13, classed as half medium. The intermediate size of tube is produced through the medium of a ring or blushing 14, (shown in position in dotted lines in Fig. .Land in detail in Fig. 5,) Whose inner diameter is such as to permit said ring or bushing to exactly iit over the crown end lO of thebase designed for the eighthmedium size of casting-tube, the outer diameter of the ring or bushing corresponding to the inner diameter of the quarter-medium roller-mold or tube 15, thus providing a basecrown (or bung) for each of the three standard sizes of molds for the rollers of the three classes of Vprinting-presses in general use, known and designated as platen job-printing presses.

The base A of each mold is provided with a central longitudinal opening B, which extends from one crown of the base to theother, the said longitudinal opening B being tapered from its center in direction of the crowns. This opening B is adapted to receive and seat theshanlror gudgeon 16 of the roller-stock 17 when the same is in casting position, as illustrated in Fig. 4. The opening B at the half- IOO medium crown end of the base is usually a trifle larger than the opening in the opposite crown end in order to admit larger stockshanks; but both openings, as stated, should taper slightly inwardly to a central point in the base, where the openings merge or unite. Roller-stock shanks are variable in their classified sizes. Hence a slight taper in the base-openings Bis exceedingly desirable and will facilitate the seating of the shank, a few turns of small twine or a slip of paper or other material wound about the shank sufcing to hold it in proper casting position.

A feed orifice 18 extends longitudinally through the base, openinginto either crown at a point bringing the outlets of the opening within the mold when the latter is in position over the crown, and preferably at the central portion of the orifice 18 a chamber 19 is formed. An opening 2O is provided at the side of the base of a mold, and the said opening intersects the feed-orice 18 at the chamber 19, and the opening 20, which is horizontal, is designed to receive a small, preferably taperfitted, feed-pipe 21, through which the composition is admitted to either crown of the base by means of the communicating ,feed-orifice 18. The feed-orifice 18 is vertical to the base when the latter is in casting position, and the lower end of the feed-orifice 18 is estopped by reason of the base resting upon a suitable support, thus allowing the composition to rise in the mold or tube placed over the upper base-crown and in position for casting. A vertical supplypipe 22 is also provided, the said supply-pipe being made in one or more sections, as desired. The supply-pipe is of such length as to bring its upper end above the top of the longest casting-tube that may be used for sizes provided for by the construction of the base. The upper end of the supply-pipe 22 is preferably threaded to receive a coupling 23, into which the threaded end of a short pipe 24, secured to the bottom of a funnel 25, may be inserted. The lower end of the vertical supply-pipe when it is used in connection with a number of casting-tubes is preferablythreaded andinserted into a slightly-expanded coupling 26, closed at its lower end by threaded plug 27; but the form of the coupling m-ay be changed asrequired. This lower coupling and the plug-fitting constitute a base for the vertical supply-pipe 22, and provide a chamber which affords ample rooln for tapping and connecting with said chamber the smaller feed-pipes 21, leading to the several bases A, when a plurality of casting-tubes is employed, suitable openings 28 being furnished in the plug-fitting or base 26 for that purpose.

In Fig. 2 the vertical supply-pipe is shown as applied to a single casting-tube, the connection between the supply-pipe and castingtube being made at a point close to the base. The small feed-pipes 2l are preferably threadfitted radially to the couplings forming the base of the vertical supply-pipe, and their projecting ends are tapered to enter the feedvpoints in pounds or fractions of the same.

openings in the sides of the bases communieating with the feed-orifices of the latter, as described.

The funnel 25, surmounting the vertical supply-pipe, should' be large enough to hold sufficient composition to supply all the molds that it may be desirable to fill simultaneously. A pledget 29, of wood or of a like material, is tapered at its lower end to fit the small pipe at the bottom of the funnel, as shown in Fig. 1, and the said pledget is long enough to project a few inches above the upper rim of the funnel when in position. This pledgetis used in lieu of aValve, being the equivalent thereof, and is employed to close the outlet of the funnel until composition has been poured into the latter sufficient to supply the castingtubes, and the pledget is also used to control the feeding of the mass composition. An estopping-cap 30, preferably of metal and made slightly tapering, is fitted over the upper ends of the shorter molds, as shown in Fig. 1, when several are to be filled simultaneously, the purpose of the estopping cap or caps being to prevent overflow and allow the composition to rise to proper levels in the longer tubes in use in the combination. The short pipe in the bottom of the funnel may be taper-fitted to the coupling at the upper end of the vertical supply-pipe. The vertical supply-pipe may also be taper-iittedt-o the coupling forming its base. The threaded fittings in fact may be taper fittings, and Vice versa, when desired. As stated, the vertical supply-pipe may be in two or more sections. The funnel may also be graduated concentrically upon its inner face to indicate the quantity of composition it holds at certain A valve may also be used at the base of the funnel in lieu of the pledget. The pledget, however,is simple,inexpensive,and easily cleaned, and is hence preferred. The base-crown may be lathed to other and special sizes than indicated and the bushing may also be of different size, or the form of the double-crowned base may be modified by projecting ,two or more other base-crowns centrally and at right angles to those shown, their respective feedorifices communicating with the central feedpipe openings, thus supplying the eXtra crowns simply and directly through one and the same feed-pipe opening.

In operation the molds, bases, cores, pipes, rbc., should be slightly heated in order not to chill the melted composition. The several parts are then properly oiled and connected. The bases, cores, and molds having been placed in position and the funnel at the top of the supply-pipe estopped by the pledget, a sufficient quantity of melted and properlyprepared composition is emptied from the melting-pot into the funnel. The pledget of wood is then cautiously and partially withdrawn and the composition allowed to iiow to the several casting-tubes. When the composition has risen to the top of the lower tubes,

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if there be such, the estopping-cap is xed over such tubes and the composition is alloWed to rise in the other casting-tubes to the desired height. The rollers When set are Withdrawn from the molds in the usual manner, the composition readily clearing intact from the several parts of the feeding appliances.

The roller-stock 17 is held in place by the ordinary star or spider usually supplied With roller-casting tubes by the manufacturers thereof.

Having thus described my invention, I claim as new and desire to secureV by Letters Patent- 1. In a device for casting press-rollers, a base having its opposite ends adapted to receive different sizes ofcasting-tubes, the base being provided with an opening extending through from one end to the other, said opening contracting at the center and expanding at its ends, the base being further provided with a feed-orice and an opening leading into said orifice, adapted for the reception of a feed-tube, for the purpose set forth. i

2. In a device for casting press-rollers, a base having its ends reduced to dierent diameters and provided With a central opening adapted to receive the spindle of the rollercore to be cast upon, the said opening extending from end to end, being contracted at its center and enlarged at its ends, whereby the opening tapers from its center in opposite directions, the said base being provided also With a feed-orifice extending through from end to end, and an opening leading into the said feed-orifice, adapted for the reception of a feed-tube, substantially as described.

3. In a device for casting press-rollers, the

combination, with a supply-tube, the tube being provided With a chambered base, feedtubes extending from the chambered base, and a valve located at the upper portion of the said feed-tube, of a series of casting-tubes, bases for the said tubes, each base having its ends of dierent diameters to receive castingtubes of dierent sizes, the base for each castin g-tube being also provided with an opening extending through from end to end, diverging at the ends and converging at the center, each base being also provided with a feed-orifice, and an opening leading into the feed-orifice adapted to receiveV one of the feed-tubes from the chambered base of the supply-pipe, for the purpose set forth. 4. In an apparatus for casting press-rollers, a base adapted to receive a casting-tube at either end thereof, the base having a feedopening extending entirely through it, and the base also having an opening for a feedpipe, the last-named opening communicating With the feed-opening intermediate the ends thereof.

EUGENE STOUGH.

Vitnesses: i

A. B. SESSIONS, FLETCHER IvEY.

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