USRE8129E - Improvement in methods of drying lumber - Google Patents

Description

G. WOODS. Assignor to himself and G. P. CARTER. Method of Drying Lumber.

Reissued March 19,1878; 2157.23

' fizrenfor: 6 76 UNITED STATES PATENTQFFICE;

GEORGE WOODS, OF OAMBRIDGEPORT, MASSACHUSETTS, ASSIGNOR 'ro HIMSELF AND GEORGE P. CARTER.

IMPROVEMENTIN METHODS F DRYING LUMBER.

Specification for ming part of Letters Patent No.154,205, dated August 18, 1874; Reissue No; 8,129, dated To all whom it ma concern:

Be it known that I, GEORGE WOODS, of Cambridgeport, in the county I of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Drying Lumber, &c.; and I do hereby declare that the following is a full, clear, and exact description thereof, that will enable others skilled in the art to which it appertaius to make and use the same, reference beinghad to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification. 1

My invention relates to a new and useful process for drying lumber, &c.; and consists in the employment of a pipe or pipes, or receptacle, or other surface-condenser, containing circulating water of a low temperature, to which condenser the moist vapors that pass off from thelumber, &c., while being heated in a drying-chamber, are accessible, and, as the vapors come in contact with such condenser containing' water in circulation, they are condensed and allowed to escape in liquid form.

The accompanying drawing will serve to show the general principles upon which my, improved process is carried out; but I wish to state that I do not confine myself, in the car-' k rying out of my invention, to the use of any particular shape orconstruction or form of condenser, or to the exact arrangement as shown in said drawing, as such construction, form, or arrangement'forms no essential part of my invention, the gist of which is the process of heating lumber, &c., and thereby evapo'ratingthe moisture-which is brought in contact'with a condenser containing water in circulation, on the surface of which condenser the moisture will condense in liquid form, in-

which conditionit is withdrawn from and allowed to escape freely from the condenser and the drying-chamber.

In the drawings, Figure 1 represents a plan View of a drying chamber, and Fig. 2 represents a vertical section of the same.

a represents a drying room or chamber, heated in the usual manner. I) I) represent a pipe, receptacle, or condenser, through which cold water is kept incirculation.

The cold water, after being circulated March 19, 1878 application filed February 14, 1878.

' through the pipe or condenser b, is forced out at d,. t'rom which it may be conducted to a steam-boiler as feed-water or otherwise, as

may be desirable.

, .[9 represents a trough or conductor in which the condensed vapors on the condenser b drip, and from which they are conducted away from the drying-chamber and the condenser. The said conductor a terminates at f, outside of the drying-room, or'in a similar manner.

The lumber or other articles that are to be dried may be suspended in the drying -room' in any of the ordinary ways.

The operation of my improved process is as follows: After the lumber or other material that is to be dried is placed in the dryingchamber, I heat the atmosphere in the said chamber as usual, when the moist vapors that pass off by evaporation from the lumber, &c., come in contact with the condenser containin g water in circulation, by which such vapors are condensed in liquid form and conducted away from the condenser.

. In this manner I am able to dry lumber and other articles more rapidly and at a less expense as compared with the ordinary methods of drying now in use.

Having thus fully described the nature and operation of my invention, I wish to secure by Letters Patent, and claim- 1. The process, as herein described, for drying lumber, &c., consisting in forcing wa ter through a receptacle or condenser in the heated drying -chamber, on the surface of which condenser thevmoisture from the lumber, &c., is condensed and conducted from the drying-room, in a manner as herein shown and set forth.

2. The process for drying lumber, &c., consisting in forcing water through a condenser to which the moisture that passes 011' from the lumber, &c., isaccessible and in contact with which such vapors or moisture are condensed and'removed in a liquid form. a

In testimony that I claim the foregoing I Arum Amman, HENRY Onumounn.

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