US1186555A - Process for the treatment of wood. - Google Patents

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A. P. DERBY (Si 1. H. DARGIE.

PROCESS FOR THE TREATMENT OF WOUD,

' APPHCATION men AUG-7.1913.

1 9 1 $6., $5 5 Patented June 13, 1916.

orney ASHTQH 1F. DERBY AND JAMES H. DARGAE, f)?!" TO I. EEBBY AND COMPANY, KNQ, i313 Ii-321 53324331,'MAZSSASHUSETTS, A QGRPDIMTIQZGT EQBNER, MMSSACHUIQETTS, AEESIGWQES PROCESS FQR- THE *fTrQ-LTLEJEEEENT (3 F 'WQGD Application. filed august 7, 1913.

To all whom it may comem Be it known that we, mm-rm P. DERBY uhd Jmms H. Dmum, hot-h citizens of the i'nitcd i tutos, i'e 'idiu at Gui'duci', in the county of Wm-ouster mid fl )ii1i.1i)fl;:ill3ll of TilflSSilClillEiEtilS, have. illi'el' 9d a new and useful Process for thc Treniment of Wood, of \\'lll(.ll l1fi i'olh'm'ing :1 Specification, accompanied by a drawing forming a purl: of ihe some.

()uzinvention relates to on improved method of treating Wood by which the sup is removed and the wood rendered suiuiblo foi' in'uncdiute use, thereby avoiding the long delay incident to the co'z'uino'uiy practised method of seasoning wood by utmos phoi'ic oxposun.

In carrying our improved process into cli'acL we (miploy nu apparatus. shown partly in sectiona view in the accompanying ch'a'u iug, comprising a chamber 1 in which the material .to he tr-mtcd may he inclosed. Within tho chamber 1 is o. track 2 upon which :1. truck 3 may he moved. carrying the material to he ti'reuteih which in the prio -cub instance is i'e iii'esecntcd as a piio of boards l spaced apart. as shown Ht 5. 5, to allow the introduction of simian around such individual picce, One sido of the i'ooopltucie inciosing izhc chamber i is provided wiil a door closing :i 'uinst u gin-dud '4' "which renders tho cluuuhor uii' tight.

Leading from u. HOlU'CC of steam supply under pressure is u pipe 8 eutciiugg the chainher 1. and provided with u. Valve 9 by which the supply of utcum to the chamber l mu ho !'UIl!l1\tl(l. From the chziuihcv l we conduct :i pipe ll) loading to an air pump l1 having :1 discharge nozzle 12 and oiwz'utod through u pision rod )3 mid i'oiuiing eccentric 14- which is czii'z'icd upon a shaft 15 and driven from any suiiuhlc souroc of powci' by moons of :1 bolt pulley Hi. The wood to he lii'cutcd is loaded upon the truck 3. uich piece in:- iu suitably spaced from its neighbor and the truck placed upon the truck The door (3 is thou closcd, hermetically closing); the chamber 1. Steam is admitted through the pipo for the space of from thirty to fortyiivc minutes at :1 pressure of about fifty pounds. Al:- thc end of this period the suppiy of steam is shui; off by tho valve 9 and tho ail pump 11 pm, in opera'sion until ijhe steam and My contained; in ihe chumher 1 is suhstzmi uiiy oiihaiiiszioo.

' to remain in the vacuum thus 4|: then oil-mired produced for a short period. depending SOZYwWiL upon the uoiurc of tho Wood, usually for; one hour for inch in .iho wood is' iii;

sufiicient to prevent the subsoaniziui condom sation of 32mm and to ucconmlish ihe more i thoi'ough evaporation of moisture While the wood remains in the vacuum. The lumber is thenremoved from izhe chamber 1 thoroughly seasoncd; or deprived'of its sap, and in pi'opei? condi ion for immediafio use either with or without. further kiln drying, according to the purpose for which it is so be employed.

If the wood is iZG he used for ooh-melt Work, furniture. or interior finish. it should be kiln dried by the method now commonly practised by tho application of duty hoaic immediately before such We claim. 1,

The within dassorilied promos of floating wood. con ting in inclosing; ghe Wood in a hcrmeticuliy scidc-{l chamber, subjecicing the Wood in said chamber to the action of steam under pressure for a procieterminod period, maii'ituiniug (lining said period temperature in suidclmmhea: suFicieut to prevent the condensation of sic-mu, exhausting the air and steam from said chamber at the end of said poi iod. and subjecting said wood to the notion. of heat during the prcdeterinihe l time \vl'iich it rouiziins in he vacuum thus producai. v

Dutcd this fourth day of August, 1913.

ASHTON DERBY. ii Ai /F1 15 H. DARGIE;

Witnesses Iilhomxwg f BLACK, AMASA B. BRYANT.

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