Impregnation of wood and the like
A method of impregnating wood with preservatives in a treatment solution in which the wood and treating solution are subjected to a schedule including cycles of alternate phases of high pressures and low pressure wherein the pressures in the high pressure and/or low pressure phase are changed in suc...
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| creator | SEWELL CHARLES PATRICK BLACKWOOD SHERRIFF WILLIAM MORRIS |
| description | A method of impregnating wood with preservatives in a treatment solution in which the wood and treating solution are subjected to a schedule including cycles of alternate phases of high pressures and low pressure wherein the pressures in the high pressure and/or low pressure phase are changed in succeeding cycles whereby the differential of pressure between the low limit of the low pressure phase or the differential of pressure between the mean of the low pressure phase and the mean of the high pressure phase is progressively increased or decreased in succeeding cycles, or the limit of the pressure in the high pressure phase is progressively increased or decreased in succeeding cycles while the differential of pressure between the high limit of the low pressure phase and the low limit of the low pressure phase remains constant, with the variation of the pressure limits and/or the variations of the differential of pressures being controlled for ensuring that aspiration or absorption of a critical amount of air from within the wood cells is not exceeded before the wood is as deeply penetrated and as heavily loaded with the preservative as is desired. |
| format | Patent |
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NAILING OR STAPLING MACHINES IN GENERAL ; PERFORMING OPERATIONS ; PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR ; TRANSPORTING ; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL</subject><creationdate>1975</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19750715&DB=EPODOC&CC=US&NR=3895138A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19750715&DB=EPODOC&CC=US&NR=3895138A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SEWELL; CHARLES PATRICK BLACKWOOD</creatorcontrib><creatorcontrib>SHERRIFF; WILLIAM MORRIS</creatorcontrib><title>Impregnation of wood and the like</title><description>A method of impregnating wood with preservatives in a treatment solution in which the wood and treating solution are subjected to a schedule including cycles of alternate phases of high pressures and low pressure wherein the pressures in the high pressure and/or low pressure phase are changed in succeeding cycles whereby the differential of pressure between the low limit of the low pressure phase or the differential of pressure between the mean of the low pressure phase and the mean of the high pressure phase is progressively increased or decreased in succeeding cycles, or the limit of the pressure in the high pressure phase is progressively increased or decreased in succeeding cycles while the differential of pressure between the high limit of the low pressure phase and the low limit of the low pressure phase remains constant, with the variation of the pressure limits and/or the variations of the differential of pressures being controlled for ensuring that aspiration or absorption of a critical amount of air from within the wood cells is not exceeded before the wood is as deeply penetrated and as heavily loaded with the preservative as is desired.</description><subject>CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS</subject><subject>NAILING OR STAPLING MACHINES IN GENERAL</subject><subject>PERFORMING OPERATIONS</subject><subject>PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR</subject><subject>TRANSPORTING</subject><subject>WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1975</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFD0zC0oSk3PSyzJzM9TyE9TKM_PT1FIzEtRKMlIVcjJzE7lYWBNS8wpTuWF0twM8m6uIc4euqkF-fGpxQWJyal5qSXxocHGFpamhsYWjsaEVQAA1xkksA</recordid><startdate>19750715</startdate><enddate>19750715</enddate><creator>SEWELL; CHARLES PATRICK BLACKWOOD</creator><creator>SHERRIFF; WILLIAM MORRIS</creator><scope>EVB</scope></search><sort><creationdate>19750715</creationdate><title>Impregnation of wood and the like</title><author>SEWELL; CHARLES PATRICK BLACKWOOD ; SHERRIFF; WILLIAM MORRIS</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US3895138A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1975</creationdate><topic>CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS</topic><topic>NAILING OR STAPLING MACHINES IN GENERAL</topic><topic>PERFORMING OPERATIONS</topic><topic>PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR</topic><topic>TRANSPORTING</topic><topic>WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL</topic><toplevel>online_resources</toplevel><creatorcontrib>SEWELL; CHARLES PATRICK BLACKWOOD</creatorcontrib><creatorcontrib>SHERRIFF; WILLIAM MORRIS</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SEWELL; CHARLES PATRICK BLACKWOOD</au><au>SHERRIFF; WILLIAM MORRIS</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Impregnation of wood and the like</title><date>1975-07-15</date><risdate>1975</risdate><abstract>A method of impregnating wood with preservatives in a treatment solution in which the wood and treating solution are subjected to a schedule including cycles of alternate phases of high pressures and low pressure wherein the pressures in the high pressure and/or low pressure phase are changed in succeeding cycles whereby the differential of pressure between the low limit of the low pressure phase or the differential of pressure between the mean of the low pressure phase and the mean of the high pressure phase is progressively increased or decreased in succeeding cycles, or the limit of the pressure in the high pressure phase is progressively increased or decreased in succeeding cycles while the differential of pressure between the high limit of the low pressure phase and the low limit of the low pressure phase remains constant, with the variation of the pressure limits and/or the variations of the differential of pressures being controlled for ensuring that aspiration or absorption of a critical amount of air from within the wood cells is not exceeded before the wood is as deeply penetrated and as heavily loaded with the preservative as is desired.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS NAILING OR STAPLING MACHINES IN GENERAL PERFORMING OPERATIONS PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR TRANSPORTING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL |
| title | Impregnation of wood and the like |
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