US49146A - Improvement in preserving wood - Google Patents

Description

' G. PALMER.

Preserving Wood.

Patented Aug. 1, 1865.

fnrrenfor:

asses UNITED STATES PATENT OFFICE.

IMPROVEMENT IN PRESERVING wooo, 84c.

Specification forming part of Letters Patent No. 19,l46, dated August 1, 1865.

To all whom it may concern:

Be it known that I, GEORGE PALMER, of Littlestown, in the county of Adams, in the State of Pennsylvania, have invented a certain new and useful mode of opening thepores, extracting the gas, and saturating timber for preserving it and the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, making a part of this specifieation,in which- Figure 1 shows a section (bored through) of a pump-log cut in halt" longitudinally, with the apparatus for heating, opening the pores, and extracting the damp and gas from the timber in the bore or cavity preparatory to saturating. Fig. 2 represents a top view of a double fire-box and trough for preparing the outer surface of pump-logs or other timber-the same process of saturating. Fig. 3 shows a side view of a fire-box on wheels for passing over or under any surface of timber to prepare it for the process. Fig. 4 shows a side elevation of a trough for saturating timber. Fig. 5 is a top view of a long trough for the same purpose.

The object of my invention is to preserve the timber used in exposed places from decay and to prevent the pernicious effects and the bad taste of Water from decayed wood in log pumps and curbs in wells, &c. p

My invention consists in the apparatus and manner of heating the inner surface of pump logs and the outer surface of timber, of any form and dimensions, sufiiciently to open the pores and draw out the gaseous substance, dry the sap or moisture to such a degree that resinous, oily, or bituminous substances can be applied hot to the heated wood and penetrate it to its fullest capacity without being repelled by the gas or steam generated within.

To enable others skilled in the art to make and use my apparatus and to produce such results, I will describe it and the process of using more fully, referring to the drawings and to the letters marked thereon.

For the purpose of preparing timber bored through longitudinally for pumps or for waterpipes, I have a sheet-iron cylinder or pipe (A) furnace, supported atbot-h ends on rollers a an ac, two of them being placed at right angles with theother two,they and thepipe-furnaceAbeing of it.

erate the steam and gas from the timber, which will pass out of both ends. When this process of heating the inside is going on the outer surface may also be undergoing the same process by having the timber B placed in the trough O of the double fire-box D D, as seen in Fig. 2, where it can be turned over so as to get a uniform heat entirely through the timher, and all of the gas and dampness dried out When the timber is thus thoroughly heated the pores of the wood may be saturated and entirely filled with any oily, resinous, or bituminous substance applied hot to the heated timber by immersing it in a trough, E, made of boiler-iron, under which a fire can be built, as seen in Figs. 4 and 5, or the saturating substance may be applied with swabs with very good success, as there is no steam or gas to repel its entrance into every pore.

If desirable to saturate any considerable sized fixed surface, likethe root of a building the deck of a vessel, orjt ides oftheli a fire-box, F, placed onpwh ls ffliso th may be passed over very near ndheatttn surface without charring; or urningfita a then immediately applying suhstancewh is impervious to water. H I may be made of tonguedand M and one that will be tight and d out any other covering; and so for the outside of farm -buildings generally, as well as fence posts and rails or paling. This process may be applied to timber for all of the various purposes, such as railroad cross-ties and stringpieces, bridge-timbers, flumes aqueducts cisterns, and reservoirs, wa teleg, poles, and posts for all Thus it will be seen th apparatus as above deslc lay timber for various; 1 po to last five times as long as it will when used in the common way, and all of the bad taste in water and the pernicious effects of decayed wood in and about Wells and cisterns may be entirely remedied.

wood and extract the sap and gaseous matter, as herein described, for the purposes specified. 2. Opening the pores of timber by applying heat, in the manner herein described, so that oily, resinous, or bituminous substances will penetrate the wood to its fullest capacity.

GEORGE PALMER.

Witnesses:

J. B. WOODRUFF, E. R. MORRISON.

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