US 679425 A
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No. 679,425. Patented m 30, 1901.
A. KERTESZ. mEncEmzme Home.
(Application filed July 8, 1900.)
1n: nonm: anus co. wo'mumn" WASHINGTON n, c.
UNlTED STATES PATENT OFFICE.
ADOLF KERTESZ, OF MAINKUR, NEAR FRANKFORT-ON-THE-MAIN, GERMANY.
SPECIFICATION forming part of Letters Patent No. 679,425, dated July 30, 1901. Application filed July 3, 1900. Serial No. 22,422. (No model.)
To all whom it may concern:
Be it known that I, ADoLE KERTESZ, a citizen of Austria-Hungary, and a resident of Mainkur, near Frankfort-on-the-Main, in the Empire of Germany, have invented a new and useful Improvement in Mercerizing-Machines, of which the following is a specification.
It is well known that during that process of treating cotton to give it the appearance of silk, known as mercerization,it is essential that the tissue should be under constant ten sion. The machines heretofore used for that purpose are either machines constructed after the general plan of tentering-frames, in which the tissue is stretched by the tentering-chains, or machines in which the tissue runs over openers to prevent shrinking. The machines first above named are very satisfactory as far as regards quality of production, since the tissue being seized at the selvages shrinking is practically entirely prevented; but the quantity of production is limited. The ma chines of the second kind above named yield a larger production; but the shrinking force of the tissue when subjected to the action of the caustic lye is so great that the tissue cannot be entirely prevented from shrinking by merely resting on the various opening appliances now in use, and thus the mercerizing eifect is materially diminished. I have discovered that the stretching of the tissue while being mercerized can be accomplished in a very simple and satisfactory manner by passing the tissue between matched corrugated rolls, so that the tissue is forced to conform to the corrugations during its passage. Owing to this special corrugated surface of these rolls between which the tissue passes and to the corrugated surface of which it is compelled to conform the wet tissue not only is firmly held, but is at the same time sufficiently stretched and kept stretched to insure the best effect. Thus the quality as well as the quantity of production of the respective hereinbefore-mentioned devices of the prior art are both simultaneously obtained.
In the drawings forming part of this specification, Figure 1 shows an elevation of a simple form of memorizing-machine embodying my invention. Fig. 2 shows a pair of my matched corrugated rolls, and Fig. 3 shows an elevation of a larger memorizing-machine wherein the number of my corrugated rolls is multiplied.
In the drawings, a, Fig. 1, is the tissue passing through the machine in the direction of the arrows.
b is the bath of caustic lye.
0 represents the ordinary squeezing-rolls for pressing out the superfluous lye.
The wet tissue after passing through the squeezing-rolls runs immediately between the two matched corrugated rolls A and then through the second pair of matched corrugated rolls A the latter also effecting the washing out of the lye during the stretching in conjunction with the washing device D. The tissue then passes through the squeez ing-rolls d, after having j ust previously passed under a sprinkling-pipe E, and is so delivered from the machine.
The larger machine (shown in Fig. 3) is constructed on the same general principle, but so arranged that the tissue shall remain longer under tension.
As before, the tissue a runs through the caustic-lye trough b and then through the squeezing-rolls c. It then passes over a large corrugated drum or roll B, while the small rolls A A A A A which are all corrugated to match the large roll B, press and stretch the tissue to conform to the said corrugations.
The drum or roll B and the small rolls A A A and A are in all respects duplicates of the drum or roll B and the small rolls A A &c., and act in the same way. The device D for washing the lye from the tissue while stretched may be applied in conjunction with the large drum or roll B as shown in Fig. 3, and the tissue may further and subsequent] y be subjected to the washing action of a sprinkler E before it leaves the machine.
My corrugated rolls maybe made of wood, metal, rubber, or other suitable material, and their number may be varied, so as to subject the tissue a shorter or a longer time to their action, as the character of the tissue in hand and the degree of effect desired may require. A typical pair of the rolls is shown by Fig. 2, as aforesaid. The corrugations are circumferential rounded undulations, the projec- IOC tions and depressions being uniformand equal to'each other, and the two rolls of-the pair fit together, the projections of one roll It isobvious that the form of the corrugations in my rolls may be varied as long as it.
is such as not to injure the tissueand is such as to well stretch the tissue by forcing it to conform to the corrugations during its'passage through the corrugated rolls.
I have not more minutely described the mercerizing-machines shown in the drawings,
because their structure is obvious at a glance to one skilled in the art, because I refer to each of them merely as an example of one type of machine of the many in which my invention may be employed, and because I do not desire to claim the entire machine in this application.
What I do claim, and desire to patent, is-
1. In combination with a mercerizing-machine, the tissue-stretching device which consists of matched corrugated rolls between which the tissue passes in its progress through the machine.
2. vA niercerizing-machine having, in combination, means for subjecting the tissue to a shrinkingbath, and shrinkageresisting rolls between which the tissue passes, such rolls-liavingcircumferential corrugations, the projections of one roll occupying the depressions of the other. I
3. A mercerizingmiachine having, in combination, means for subjecting the tissue to a bath of caustic lye, devicesfor washing the .lyefrom the tissue, and shrinkage-resisting rolls acting upon the tissue, between said means and devices, and constructedwith circumferential'corrugations, the projections of one roll occupying the depressions of the other.
4:. A -mercerizing-machine having, in combination, means for subjecting the tissue to a bath-of caustic lye, squeezing-rolls for removing surplus lye from the tissue, devices for washing the lye from the tissue, comprising matched corrugated rolls'having circumferentialcorrugations between which the tissue passes, and like matched corrugated rolls interposed between said squeezing-rolls and said'washing devices to resist shrinkage of the tissue during the mercerizing process.
Signed at Frankfort-on-the-Main, in the Province of Hesse-Nassau, Empire of Germany, this 6th day of June, A. D. 1900.
J EAN GRUND, RICHARD GUENTHER.