US1608742A

US1608742A - Stencil sheet

Info

Publication number: US1608742A
Authority: US
Inventors: Edward W Hill
Original assignee: AB Dick Co
Current assignee: AB Dick Co
Priority date: 1923-12-03
Filing date: 1923-12-03
Publication date: 1926-11-30
Anticipated expiration: 1943-11-30

Description

.40 also prefer to employ a suitable plasticizing treated cellulose.

' 50 and of such mixture and such oils sufiicient 4. A stencil sheet coating including nitro- Patented Nov. so, 1926. 15508,74Z

UNITED STATES PATENT- err-ice.-

EDWABD'W. HILL, OF CHICAGO, ILLINOIS, ASSIGNOB TO A. B. DICK COKPANY, OF

CHICAGO, ILLINOIS, A CORPORATION 01 ILLINOIS.

STENCIL SHEET. No Drawing. Application filed December 8, 1923. Serial No. 678,183. I

1 This invention relates nerally to sothe manner Commonly practised. i. e., by called dry-process stenci -sheets and pardrawing the yoshino over the surface of the 6 ticularly to sheets of the type employing as coating compound, which thereupon is taken a coating constituent a'material such as nitroup and absorbed by the fibres, after which 5 cellulose or other cellulose esters. The inthe coated sheet may be hung to set as a revention, which centers about the coating, as sult of the evaporation of the volatiles'oldistinguished from the supporting base vents. As such evaporation. proceeds, the yoshino or other porous fabric commonly cellulose sets and occludes or encases, in a employed in the art, has for its object to profinely divided state, much of the petroleum l0 duce a material which shall, upon applicaoil along with some quantity of the vegetation to a supporting base, set quickly and ble oils and other constituents which areincompletely impermeatize the sheet without. soluble in and are nonlvents of the cellu-, repetition of the application; which shall lose esters. The resulting' coating on the be stable throughout an extended period of paper is not, therefore, to be-regarded as a time and capable of receiving type-impresomogeneous mass but as one consisting of sions without preliminary moistening or a solid or semi-solid mass which'occludes or other treatmentywhich shall have a wide encases,-.in a finely divided state, a part of 9 softening range and be therefore substanthe oils or oily masses, either liquidor semitially unaffected by tem erature changes, solid. p I and which shall respon uniformly and In making up my coating compound. 'I clearly to the pressure of the type or stylus may, if desired, employ a suitable pi ent n the production f'the desired stencil charor soluble dye-stuff, such," for examp e, as 75 acters. v carbon black, methyleiie blue and the like, In carrying out the invention in an a serving not only to color the compound but,

roved form, I first dissolve nitro cellulose in the case of the pigment,to lend body to ma suitable volatile solvent such as etherthe compound. Also, as a'bod'ying and alcohol, amyl or ethyl acetate, acetone or -a toughening agent I may employs, suitable mixture containing two or more of these gum, as resin, which is soluble in themutual I solvents. I then add a heavy, non-volatile solvents but insoluble in petroleum oil. This 7 oil (preferably one having lubricating propgum resin may be either'synthetic or natuerties), such as petroleum oil either with or ral. Coumarone resinof the synthetic group without previous admixture of another solor m sandarac of the natural group of event (such as a halogenated aliphatic hydrop ucts will be found satisfactory. Fi-

carbon, an aliphatic or aromatic ester or the nally, it is important to note that the inven-' like), which will mix with both'the solvents tion is not limited to nitrocellulose orcelluof the nitro-cellulo'se and the petroleum oil. lose acetate and, in fact, other cellulose es- I also add a tem ring agent such as castor ters may be employeddnstead. consequentoil and, if foun desirable, a fatty matter 1y, to avoid limitation, I shall refer tothis such as oleic or stearic acid or the like. I c ns i ent herein by he t rm chemically.

agent such as chlorinated naphthalene, acet- What I claim is analid, or the like. 1. A stencil sheet coating vwhich includes The order of addition of the ingredients a cellulose compound luding orencasing to the solution may be atly varied accord-- a lubricant. ing to the character 0 the solvent used, the 2. A stencil sheet coatin which includes proportions desired and the temperature'at a cellulose compound occlu g or encasing which the mass is mixed. The mixture of a lubricant in afinely divided state. solvents holds the nitro-cellulose,' oils and 3. A stencil sheet coating including nitroplasticizing agent all in solution in the mass cellulose occluding or encasing a lubricant.

should be'used to bring the. compound to the cellulose occluding or encasing a hydrocarproperconsistency forcoating the sheets of bon oil. yoshino. .Such coating may be effected in 5. In a type-impressible stencil-sheet, an

open, porous base having a coating including a cellulose compound and a hydrocarbon o1.

6. In a ty ge-impressible stencil-sheet, an open, porous a cellulose compound carbon oil.

7. In a type-impressible stencil-sheet, an open, porous base having a coating including a cellulose compound and a non-volatile and a heavy, hydrohydrocarbon oil.

8. In a type-impressible stencil-sheet, an open, porous ba's e having a coating including'a cellulose o ompound and a heavy, nonvolatile hydrocarbon oil.

9. In a type-impressible stencil-sheet, an open, porous base having a coating including a cellulose compound, a tempering agent and a non-volatile oil.

10. In a type-impressible stencil sheet, an open, orous base having a coating includin a cellulose compound, a tempering agent and a heavy, non-volatile oil.

n a type-impressible stencil-sheet, an

open, porous base having a coating including a cellulose compound, a tempering agent and a non-volatile hydrocarbon oil.

12. Ina type-impressible stencil sheet, an

open, 'porous base having a coating including acellulose compound, a tempering agent and a plasticizing agent.

13. In atype-impressible stencil sheet an 1 open, porous base having a coating inclu ing a cellulose compound, a tempering agent, a plasticizing agent, and a non-volatile oil.

14. In a type-impressible stencil-sheet, an open, porous base having a coating including a cellulose compound, a tempering agent, a plasticizing agent, and hydrocarbon oil.

15. In a type-impressible stencil-sheet, an open, porous basehaving a coating including a cellulose compound, a tempering agent, aplasticizing agent, andheavy, hydrocarbon o1 16. In a .type-impressible stencil-sheet, an open, porous base having a coating including a cellulose compound, a tempering agent, a plasticizing agent and a heavy, non-volatile hydrocarbon oil.

17. In a type-impressible stencil-sheet, an

ase havinga coatingincludingoccluded eluded or encased in plasticizing agent.

open, porous base having a coating including a cellulose compound, castor oil, a plasticizing agent and hydrocarbon oil.

In a type-impressible stencil-sheet, an open, orous base having a coating including a cellulose compound, castor oil, a plasticizing agent and heav hydrocarbon oil,

19. In a type-impressible stencil-sheet, an open, porous base having a coating including a cellulose compound, a tempering agent, a non-volatile oil and fatty matter.

20. In a type-impresslble stencil-sheet, an open, porous base having a coating including a cellulose compound, a tempering agent, a non-volatile oil, a plasticizing agent and fatty matter. v v

21. In a type-impressible stencil sheet, an open, porous base having a coating including a cellulose ester, a tempering agent, and

chlorinated naphthalene.

pressible stencil-sheet whichconsists in coatin" an 0 en orous base with chemicall 23. The process of producing a type-ime process of producing a typeimpressible stencil-sheet which consists in coat- 111g an open, porous base with chemically treated cellulose in solution and another properties I material possessing lubricating g or encased in such cellulose in -a finelydivicled state.

24. The process of producing a type-impressible stencil-sheet which consists in coating an open,

rial possessing lubricating properties oc such cellulose, and a 25. The process of producing. a type-impressible ste'n'cil-sheetwhich consists in coating an open, porous base with chemically treated cellulose in solution,'another material possessing lubricating properties occluded or encasedin such cellulose in a finely divided state, and a plasticizing agent.

This specification s gned and witnessed this 28th day of November, ,1923.

EDWARD W. HILL.

porous base with chemically. treated cellulose in solution, another mate