US614245A - Elisiia emerson - Google Patents

Description

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No. 614,245. Patented Nov. 15, 1898. E. EMERSON.

MOLO FOR MAKING CLICO PRINTERS' ROLLS.

\ Applica.tion filed Jan. 19` 1897.2

UNITED `STATES PATUENT OFFICE.

ELISHA EMERSON, OF BUFFALO, NEW' YORK.

MOLDv FOR MAKING CALlCO-PRINTERSJ ROLLS.

SPECIFICATION forming part of Letters Patent No. 614,245, dated November 15, 1898.

' Application filed January 19, 1897. erial No. 619.784. (No model.)

T0 all witam it may concern:

New York, have invented certain new and useful Improvements in Molds for Making Calico-Printers, Rolls; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to an improved mold for making calico-printers rolls.

Calico-printers, rolls consist of copper cylinders having thick walls. Such rolls are heavy, and as they must be made of the best quality of copper lare correspondingly costly. Rolls of this kind are usually engraved with the desired pattern, and after being used for a season are turned down and a new pattern is engraved on the cylindrical surface of the rolls.

Calico-prnters use a large number of standard patterns, and the rolls containing such patterns are either never turned down to have other patterns engraved on them or are usedV for a long succession of years before the pattern is turned down and another standard pattern engraved thereon. In a calico-printing establishment the capital invested in these standard rolls is very large, owin g to the great aggregate weight of the refined pure copper contained in the rolls. capital and the cost of insurance form a large item of the running expenses of such works. Calico-printers7 rolls, consisting of a copper cylinder strengthened by tin or other metal, have been made by casting the hacking into the copper cylinder or between a central mandrel and the interior of the cylinder. Printers, rolls have also been made by drawing the copper cylinder over an iron core; but calicoprinters, rolls so made were not practically useful, because the' great pressure exerted on the copper cylinder separated the cylinder from the core Vor hacking, and these rolls failed, after a short time of use, to register with the series of rolls used to print the different colors of a pattern.

This invention has reference to an improved mold for making calico-printers, rolls and in The interest on this' i the construction thereof, as will be more fully Be it known that I,,ELIsHA EMERsoN, of Buffalo, in the county of Erie and State of described hereinafter.

Figure 1 is a longitudinal sectional view showing a composite roll in a mold in which the backin g has been cast into a copper tube. Fig. 2 is a side view of the vcore of the mold by which the mandrel-hole is formed with the usual spline for securing the roll to the mandrel whenthe roll 'is used. Fig. 3 is a top view of the mold; Fig. 4:, a transverse section, on an enlarged scale, near the ends of the mandrel-core. Fig. 5 is an enlarged section of the mandrel-'core at any point between the ends shown in Fig. 2. Fig. 6 is a transverse section of the 'improved composite calicoprinters, roll.

Similar letters of reference designate corresponding parts in all the figures.

In the drawings, a indicates a seamless cylindrical tube of the pure copper of which calico-printing rollers are usually made; b, the bottom plate of the mold, provided with -an annular groove to receive one end of the Sare screw-threaded. A cross-bar Z', having a central hole through which the rod d passes, extends across the slotted end or lug l of each of the arms i. The nuts r r on the screwthreaded ends of the rods d are screwed down onto the cross-bar Z' and draw the upper and roo I will now more fully describe the preferred method of producin g the composite roll, viz: The tube a of copper has the endsfinished so as to tightly fit and make a close joint in the annular groove of the plate Z) and the rim h of the spider g. The interior surface is thoroughly cleaned with acid, so as to remove all 'oXidation, and this inner surface may now be tinned or covered with a fiux. The tube a is now secured firmly between the plate b and the spider g. The core f is inserted and the melted metal spelter or composition of metals-such as brass, bronze, or Babbitt metal-is poured into the space between the tube a and the core for the mandrel f, and when sufficiently cooled the composite roll is removed from the mold, the screws q q are removed from the mandrel-core f, the dovetail strip 0 is forced inward to permit the parts m and n to be Withdrawn, and the ends are then turned oif true in a lathe. The roll so produced accurately fits the ordinary mandrel and may be used in the same manner as a solid copper roll. The thickness `of the copper tube a is suflicient to receive successively one, two, or, if desired, more engraved patterns, while the cost of these rolls is much less than the solid copper rolls as heretofore made.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a mold for producing composite calcoprinters, rolls, the combination with the bottom plate b having an annular groove for the reception of the end of the cylinder a, a central opening for the mandrel-core f and the lugs c, c, of the spider g having the annular rim h, the arms i, i, the central perforated boss 70 and the lugs Z, the mandrel-core f supported at opposite ends in the center of the tube a, and the rods d, d, screw-threaded, as described, and provided with nuts, Whereby the parts of the mold are secu red together, as described.

2. The combination with a mold for casting inferiormetalintoacoppertube to form calicoprinters, rolls, of a mandrel-core consisting of the Sections 'm and n, the dovetail strip o provided with the groove v, the rings p, p, and screws q, q, whereby the mandrel may be withdrawn from the tube, as described.

In witness whereof I have hereunto set my hand.

ELISI'IA EMERSON.

Vitnesses:

JosEPH A. MILLER, J osEPH A. MILLER, Jr.

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