US 2955331 A
Description (OCR text may contain errors)
Oct. ll, 1960 R. F. NELSON 2,955,331
FLEXIBLE WOOD PRESERVATIVE BANDAGES FiledMar-ch 7, 1957 'lill/11111172 INVENTOR FA?, 6 /0 Rabe/f F, -Ne/son BY @Mgg ATTORNEY Normally, prior to the application of the preservative material a tear strip indicated in general by the numeral 13 is applied about the marginal edges of one half of the backing sheet 10. In the particular arrangement illustrated, the tear strip comprises a flexible 'strip` of pressure sensitive filament tape which is extremely strong and which will attach itself to the backing sheet. One end 14 of the tape 13 extends outwardly from the sheet near the potential central line of fold 15. From the line of fold, the tape 13 extends along'one-half of the length of the sheet to a point near an end of the sheet, then extends continuously Iacross the end of the sheet,
and then extends longitudinally of the sheet to the potential center line 15. Y
After the preservative coating 12 has been applied, .a strip 16 of tissue is applied, the tissueV covering extending entirely over the surface of the preservative. This covering 1-6 terminates short of the marginal edges of the sheet 10 but preferably completely covers the greasy coating. A-fter the tissue sheet 16 has been applied, the bandage may be centrally folded along the potential fold line 15 so that the two ends of the sheet are in superimposed relation.
After folding, the three marginal edges of the folded sheet are heat sealed together, the films 11 of the two superimposed sheet ends bonding together as indicated in Figure of the drawings. VThe seal normally takes place outwardly fof the tear strip 13 although actually the seal may also extend inwardly of the tear strip if it is so desired. r v
The bandage may be shipped and stored in this form. It is usually taken to the point of treatment while in the folded condition described. When it is desired to treat 4a pole such as the pole B illustrated in Figure l of the drawings, the earth around the pole is removed to a depth of perhaps 1S inches to two feet below the ground line and the surface of the pole is cleaned in any suit- -able way. The bandage A is then opened by grasping the projecting end 14 of the tear strip 13 and exerting an upward force against the overlying portion. of the sheet iti. The tear strip thus rips the bandage open preferably just inwardly of the area of seal between the two ends of the sheet. As the tear strip 13 is continuous between one end of the fold line 15 and the other end thereof, a generally U-shaped tear can be providedseparating one end of the sheet from the other. The sheet may then be unfolded into ilat form. The unfoldedv sheet may be wrapped about the pole, the upper edge of the bandage extending somewhat above the ground line and extending into the excavation. The bandage A is held to the pole B by staples such as 17 or by other suitable fastening means.
The tissue covering sheet 16 lies between the surface of the pole and the layer 12 of pole preservative material but due to the porous nature of this covering sheet,'it does not serve as a barrier to the passage of the preservative material therethrough. Thus, the preservative material may extend into contact with the pole to treat the same.
In accordance with the patent statutes, Irhave described V2,955,1394 l l,
i the principles of construction and operation of my flexible wood preservative bandage, and while I have endeavored to set forth the best embodiments thereof, I desire to have it understoodthat changes may be made within the scope of the following claims without departing from the spirit of my invention.
l. A wood pole preservative bandage including asheet of fibrous paper having a grease resistant heat scalable coating thereon, a layer of wood preservative material arranged in a layer upon said coating spaced from the edges of said sheet, a layer of fibrous tissue overlying said wood preservative material yand secured to said sheet outwardly of said preservative material layer, said sheet with its coating, said grease proof material and said l-ayer of tissue being folded intermediate the ends of the sheet, the ends and side edges of said sheet being heat sealed together, whereby when said sheet is unfolded, together with said preservative material and said tissue layer,Y and wrapped about a pole with said fibrous tissue layer L-against said pole, said tissue layer may act as a wick to transmit said preservative material to said pole, said preservative material comprising a greasy substance containing heavy fractions and less viscous fractions,` said tissue restraining the heavier fractions of said material and permitting passage of said less viscous fractions.
`2. A wood pole preservative bandage including an outer sheet of readily pliable grease resistant material, a lm of wood preservative material arranged in a layer on said sheet and spaced from the edges thereof, a thin sheet of porous material overlying said layer of material, said sheet with its coating, said grease proof material and said porous sheet being folded intermediate the ends of said outer sheet, the ends and side edges of said outer sheet being sealed together, whereby when said sheet is unfolded, together with said layer of preservative ma terial and said porous sheet, and wrapped about a pole with the porous sheet against said pole, said porous sheet may act as a wick to transmit said preservative material to said pole, said preservative material comprising a greasy substance containing heavy fractions and less viscous fractions, said porous sheet restraining the heavy fractions of said material and permitting passage of said less viscous fractions.
3. The structure of claim 2 and in which said outer sheet is heat scalable, and in which the margins of said outer .sheet are heat sealed together.
Y4. The structure of claim 2 and in which said porous sheet comprises a fibrous tissue sheet.
References Cited in the file of this patent UNITED STATES PATENTS Schmittutz Dec. 6, 1938 2,143,043 Wexler Ian. l0, 1939 2,329,262 Ganz Sept. 14, 1943 2,676,702' Whitefoot Apr. 27, l954 V2,752,038 Abbott June 26, 1956 Y FOREIGN PATENTS 560,879 Great Britain Apr. 25, 1944