Hektograph

Sheet 26 may consist of the rubber like material without the coating of hektograph composition. a hektograph device comprising a sheet of rubber like material which 1's moisture proof even after considerable vvrinkling and creasing, Which has great tear-resistance, which has toughness combined with some give without undue elasticity, and which has heat sealing qualtities so that a moderate amount of heatwith pressure makes possible an efiective air tight seal at the edges, and a film of hektograph composition on the surfa ce of said sheet. a hektograph device comprising a long rolled up sheet of rubber like material which is moisture proof even after considerable wrinkling and creasing, which has great tear-resistance, which has toughness combined with some give without undue elasticity, and which has heat sealing qualities so that a moderate amount of heat with pressure makes possible an effective a1'r tight seal at the edges, and a fi1m of hektograph composition on the surface of said sheet. a hektograph device comprising a sheet of rubber 1ike maberial which is moisture proof even after consid9rable wrinkling and creasing which has great tear-resistance, which has toughness combined with some give without undue elasticity, and which has heat sealing qualities so that -a moderate amount of heat with pressure makes possible an efieotive air tight sea1 at ehe edges, a. fi1m of hektograph composition 011 the surface of said sheet, and an air and. moisture proof protective covering therefor. a hektograph device comprising a, long rolled up sheet of rubber

Edges, a film of hektograph composition on the surface of seid sheet, and an air and. moisture proof protective covering thereim. . ing qualities so that 5. A hektograph device comprising a 1ong rolled up sheet of rubber like material which is moisture proof even after considerable wrinkling and. creasing, which has great tear resistance, which has toughness combined with some give without undue elasticity, am]. which has heat sea1- a moderate amount of hea.t With pressure makes possible an effective air tight seal at the edges, a film of hektograph compusitpion on the surface of said sheet, and strips of sealing material for the ed.ges of the roll. 6. A hektograph device comprising a sheet of rubber like material which is moisture proof even after considerable wrinkling and creasing, which has great tear-resistance, which has toughness combined with some give without undue elasticity, anal whioh has heat sealing qualities so that a moderate amount of heat with pressure makes possible an effective air tight sea1 ab the edges, a film of hektograph composition on the surfaceof said sheet, and a protective covering therefor of thesame material as said sheet. US99787A 1936-09-08 1936-09-08 Hektograph device Expired - Lifetime US2089092A (en) Priority Applications (1) Application Number Priority Date Filing Date Title US99787A US2089092A (en) 1936-09-08 1936-09-08 Hektograph device Applications Claiming Priority (1) Application Number Priority Date Filing Date Title US99787A US2089092A (en) 1936-09-08 1936-09-08 Hektograph device Publications (1) Publication Number Publication Date US2089092A true US2089092A (en) 1937-08-03 Family ID=22276615 Family Applications

Sealing qualtities so that a moderate amount of heatwith pressure makes possible an efiective air tight seal at the edges, and a film of hektograph composition on the surfa ce of said sheet. 2. A hektograph device comprising a long rolled up sheet of rubber like material which is moisture proof even after considerable wrinkling and creasing, which has great tear-resistance, which has toughness combined with some give without undue elasticity, and which has heat sealing qualities so that a moderate amount of heat with pressure makes possible an effective a1'r tight seal at the edges, and a fi1m of hektograph composition on the surface of said sheet. 3. A hektograph device comprising a sheet of rubber 1ike maberial which is moisture proof even after consid9rable wrinkling and creasing which has great tear-resistance, which has toughness combined with some give without undue elasticity, and which has heat sealing qualities so that -a moderate amount of heat with pressure makes possible an efieotive air tight sea1 at ehe edges, a. fi1m of hektograph composition 011 the surface of said sheet, and an air and. moisture proof protective covering therefor. 4. A hektograph device comprising a, long rolled up sheet of rubber like material Which is moisture proof even afor considerable wrinkling and Creasing, which has great bear-resistancm which has toughness combined with some give without undue elasticity, and which has heat' sealing qualities so that a moderate amount of heat with p-ressure makes possible an effective air tight seal at the