US72744A - Improvement in cooling millstones and cues - Google Patents

Description

k@tinnitus @anni @fitte JOHN MALLIN,` or BEDFORD, ortie.

l Letters Patent No. 72,744, dated December 31, 1867.

IMPROVEMENT IN COOLING MILLSTONES AND CURB.

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TO .ALL lWHOM IT MAY GONGERN:

Be it known that I, JOHN MALLIN, of Bedford, in the county of Cuyahoga, and State of Ohio, have invented certain new and useful Improvements in Cooling Millstones and Curb; and I do hereby declare that the following` is a full and complete description of the same, reference being had to the accompanying drawings, making part of this specification, in which- 'i Figure 1 is a. perspective view of the stone-curb.

' Figure 2 is a top view with curb off.

Figure 3, a transverse section.

Like letters of reference' refer to like parts in the different views presented.

The nature of this invention consists 'of an induction of a current of cold air into or between thc periphery ofthe stone and curb, and thereby prevent the accumulation of moisture on the inside ofthe curb, denominated by millers as sweating, whereby the iour becomes wet andvpasty, sticks to the curb, and'obstructs the escaping of the ilour, unless frequently' cleared out, and which it also damages. In order to obviate this diiiiculty, the following device is adopted, viz: v p

In iig. 3, A B represent the millstones, enclosed in the curb C, all ofmwhich is or may be'construeted and arranged in the ordinary way. In the side of the curb are cut ventilators or openings, DIE, one near the bottom, and the other near the top. These openings are provided witha slide, F, -whereby the size of the openings may be regulated for a purpose hereafter shown. G, iig. 2, is a dinphragm','placed between the curb and stone, in the position as shown in fig.` 3. This leather is' attached to the curb, and projects forward toward the'stone, against which it slightly rubs', and,- as will be observed, is placed between the two openings, as indicated bythe dotted line a, fig. 1. H, iig. 1, is n. fan-blower, I, thc pipeof which is'lprojected through the top of the curb,

and descends into the space, J, between the stones and curb, as seen in fig. 3.

Having thus described the construction and arrangement of the device, thc practical operation of the same is as follows: The stone, while in motion, induces a current ofcold air through the opening D, which passes around the stone, andvcscapcs lfrom the curb through the opening E, which'is on the opposite side of the leather G, and also escapes, along with the Hour, from the opening K. In connection with the induction of this induced currentvof air is an mpelled one by the fan H, and conducted into the curb by means of the pipe I, the said blower being driven by a belt from the damsel or after-run, as may be convenient.

By the induction of` these tw'o cold .currents of air, the moisture arising from'the ilour is carried off, and, as a consequence, the temperature of the stone reduced, se that the flour is not liable tobccomo heated and wet, as no sweat or moisture will be deposited on the sides of the curb, and thus cause a pasty condition of the flour, and a sticking of the same to the sides of the curb.

'The strength or volume of the'induced currentof air admitted into the curb is regulated by the slides F, which may be more or less closed, as the nature of the case may demand; also, a valve being introduced into the pipe I, the impelled current from`the fan can be regulatedns may be required.

What I claim as my improvement, and desire to secure by Letters Patent, is-

The openings E D, diaphragm G, and fan H, all combined and arranged as and for the purpose set forth.

JOHN MALLIN. Witnesses:

J. H. Bunnies, E. E. WAITE.

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