US86625A - Improvement in driers - Google Patents

Description

C. E. ASHCROFT.

Wool Drier.

Patented: Feb. 9, I869.

No." 86,625. v

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CHARLES E. ASHCROFT, OF BOSTON, MASSACHUSETTS. Letters Patent No. 86,625, dated February 9,1869.

IMPROYEMENT IN DRIERS.

The Schedule referred to in these Letters Patent and making part o t the same.

To all whom it may concern:

of this specification, in which like parts are indicated by like letters in the several figures. V

The nature of my invention consists .in a certain combination and arrangement of parts, to be hereafter shown and described, whereby a rapid and thorough circulation of heated air is caused throughout the en tire body of the material undergoing the drying-process.

To enable others skilled in the art to makeand use my invention, I will proceed to describe its construction and operation. a

In the drawings- Figure 1 represents a perspective view of my apparatus;

Figure 2, a vertical section; and

Figure 3, a plan of the same.

to denotes an apartment, or suitable structure, of desirable size, material, and form, closed on each side, and at the bottom, if necessary.

This structure is dividechinto two parts by a perforated partition, 12, forming an upper and alower chamber. In the upper one,'the material to be dried is placed, on and above the floor b.

Below this floor, I arrange a series of horizontal pipes, or steam-conduits, or receivers, 0, extending from side to side ofithis lower apartment.

These conduits are formed with upright branches (1 d, which terminate a'short distance below the. floor.

One or more of these upright branches I extend up through the floor, terminating with an elbow or elbows, as seen at f'f, in order to conduct the current of hot air toward and through the middle or mass of the ma- Within the outer pipes c, I arrange inner ones, 6, of

space between them. v

The inner pipes e are open at the ends, and are used as air-ducts.

chambers, and are to be closed at the ends, so as to cut ofi' communication between the inner and outer pipes e and c.

Steam of any desired temperature is supplied by usual means to the space between the pipes, whilst air is supplied .or forced through the pipes o into the lower chamber, thus deriving heat from both'pipes.

or other material, carrying off its moisture.

The steam circulating radiating-surface.

The inner pipe may be used for steam, and the annular space for the passage of air. V

The shape of the pipes may vary, and their number be multiplied, so as to get as much radiating-surface as necessary. I am awareof the patent of John Petrie, April 1, 1862, reissued November 17, 1863. This I do not claim. Having thus explained my invention, 1

ters Patent of the United States, is-- The arrangement of the combined steam-conduits c and air-ducts e, one or more of which may have a lateral inward bend, f, branches, d, and perforated plate, I), all constructed and operatedsubstantially as set forth.

0. E. ASHGROFT.

Witnesses FRED. OURTIS, Enwn. GRIFFITH.

smaller diameter, (concentrically,-) leaving an annular The spaces betweenthe pipes are to be used as stcam- The heated air ascends, or is driven upthrough -the I perforated floor, and permeates the mass of peat-wool,

between the pipes, ofi'course is the source of heat, and using two pipes, I get-more What I claim 'as new, and desire to secure by Let-

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