US604671A - Soap-crutching sviaghine - Google Patents

Description

(No Model.)

P. B. 8v S. C. STRUNZ. SOAP GRUTGHING MACHINE.

No. 604,671.v Patented May 24,1898,4

arEN'r Enron,

FREDERICK B. STRUNZ AND STEPHEN C. STRUNZ, OF PITTSBURG PENNSYLVANIA.

SOAP-CHUTCl-HNG MACHENE.

SPECIFCATION forming part of Letters Patent No. 604,671, dated May 24, 1898.

Application filed August 30, 1897. ASerial No. 649,973. (No model.)

To a/ZZ whom, it may concern:

Be it known that we, FREDERICK B. STRUNZ and STEPHEN C. STRUNZ, citizens of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsyl- Vania, have invented new and useful Improvements in Soap-Crutching Machines, of which the following is a specification.

This invention relates to soap-crutching machines or machines used in the manufacture of soap for stirring or mixing the necessary chemicals with the soap while in a fluid or semifluid condition, and is in the'nature of an improvement on the type of machine shown and described in Letters Patent No. 138,953, granted to Stephen Strunz on the 13th day of May, 1873. The type of machine shown and described in said patent comprises a cylindrical vessel inclosed by a water-cooling jacket and provided with a rotary dasher or mixer consisting of a shaft having a spiral circumferential groove, in which are set the inner ends of paddles and each fastened therein by a projecting tang and nut. In such a machine when the soapin the vessel was cooled by admitting water into the cooling-jacket the soap upon the interior of the vessel became chilled and caked and formed a resistance to the rotation of the paddles,which frequent] y caused the latter to break off at the weak fastening between the paddles and shaft, causing great trouble and annoyance and loss of time, as well as involving expense in repairs. Furthermore, when a paddle broke olf in this manner it usually carried several other paddles with it, and this occurred so frequently that many soap manufacturers were compelled to cease using the machine, though by its aid they had been able to produce'a better-iinished soap than by any other means. Furthermore, on account of the weakness of the fasi tening between the paddles and the shaft the paddles could not be ,extended to the interior wall of the vessel, so as to be inr'actual contact with the cooling-surface; but, on the contrary, it was necessary to make the paddles of such length that a space would intervene between their ends and the interior Walls of the vessel, and hence when water was admitted to the cooling-jacket a coating means of which the defects and disadvantages'above pointed out are avoided.

To this end our invention consists in the novel construction hereinafter described and afterward particularly pointed out in the claims following the description, reference being had to the accompanying drawings, forminga part of this speciiicatiomwherein- Figure l is a transverse section of our improved crutching-machine, and Fig. 2 is a longitudinal section of the same.

Referringto the drawings, the numeral l indicates a horizontal cylindrical vessel which is inclosed by a water-jacket 2, having an inlet-pipe 3 and outlet-pipe 4, by means of which a circulation of water may be maintained through the water-jacket for the purpose of cooling the soap. Journaled in stuffing-boxes 5 in the ends of the vessel l is a shaft 6, consisting of a metallic bar square in cross-section and torsionally twisted in such manner as to make slightly more than one complete turn. The bar thus presents perfectly square faces, to which the ends of the paddles 7 are firmly fastened by bolts 8. The flat face to which the paddles are bolted affords a rln seat or bearing for the paddles, and the torsional twist causes .them to assume a spiral position. This construction affords a very strong and secure fastening between the paddles and the shaft. To the end of each paddle is bolted a scraper consisting of a flat plate 9, preferably formed from tool-steel and slitted longitudinally to increase its resiliency or flexibility. The ends of the Scrapers 9 are in close contact with the interior of the vessel 1, and the paddles are so spaced that each scraper will travel in a path immediately adjacent to the path traversed by the IOO preceding scraper. By these means every portion of the inner periphery of the vessel 1 Will be thoroughly scraped and the soap be thus prevented from caking when the Water is caused to circulate through the coolingchamber.

One end of the shaft 6 extends beyond the end of the Vessel l and has iixed thereon a pulley 10, by means of Which the machine is driven from any suitable source of power.

Having described our invention, what We claim isl. In a soap-crutching machine, the combination With a cylindrical vessel, of a shaft journaled centrallytherein and consisting of a torsionally-twisted bar square in cross-section, and a plurality of flat paddles having their inner flat sides seated upon one of the flat faces of said shaft and secured thereto by bolts passing transversely through the shaft and paddles, substantially as described.

2. In a soap-crutching machine, the combination with a cylindrical vessel inclosed by a Water-jacket, of a shaft journaled centrally therein, a plurality of flat radial paddles arranged spirally about said shaft and fastened thereto at their inner ends, and resilient scraper-blades fixed on the outer ends of the paddles and resting in intimate contact With the interior of the vessel, the paddles being so arranged that each scraper Will travel in a path immediately adjacent to the path traversed by the preceding scraper, whereby the interior of the vessel is thoroughly scraped and the soap prevented from cakin g, substantially as described.

3. In a soap-crutching machine, the combination with a cylindrical vessel, of a shaft journaled centrally therein and carrying a plurality of paddles, and longitudinally-slitted metallic scraper-blades attached to the outer ends of the paddles and resting in contact with the interior of the vessel, substantially as described.

In testimony whereof We have hereunto set our hands in presence of two subscribing witnesses.

FREDERICK B. STRUNZ. STEPHEN C. STRUN Z. Vvlitnesses:

IVI. J. WENKE,

HENRY MELLER.

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