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Publication numberUS2972557 A
Publication typeGrant
Publication dateFeb 21, 1961
Filing dateOct 14, 1957
Priority dateOct 14, 1957
Publication numberUS 2972557 A, US 2972557A, US-A-2972557, US2972557 A, US2972557A
InventorsJr Harry A Toulmin
Original AssigneeBasic Res Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tobacco smoking product
US 2972557 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

2,972,557 TOBACCO SMOKING PRODUCT Harry A. Toulmin, Jr., Dayton, Ohio,

Research Corporation, Dayton, Ohio, Delaware No Drawing. Filed Oct. 14, 1957, Ser. No. 689,753 7 Claims. (Cl. 131-17) assignor to Basic a corporation of This invention relates to tobacco smoking products and more particularly to a tobacco mixture or product which will burn at a predetermined relatively low temperature to prevent the release of high temperature volatiles and which are known to be injurious to the smoker.

Attempts have been made heretofore to separate unwanted constituents, e.g. nicotine, and high temperature volatilizing compounds which are believed to be cancerigenic in character. A variety of filters have been proposed and used for effecting the separation of such injurious constituents from tobacco smoke with various degrees of success. It is now believed that the most injurious constitutents of tobacco smoke comprise volatile high boiling hydrocarbons and tars such as are present in the smoke from tobacco products which have been subjected to a burning temperature of above about 800 F.

The present invention provides a tobacco mix or blend which burns at a temperature below 800 F. and preferably down to about 500 F.

It is, therefore, an object of the invention to provide a burning tobacco mixture which comprises tobacco and a chemical compound distributed throughout the mass which when the tobacco mixture is burned, as in cigarettes, pipes and the like, the temperature of burning is caused to be reduced to below that at which these injurious compounds are volatilized and released into the smoke.

Another object of the invention is to provide a smoking tobacco which is useful as a tobacco mix for cigarettes, and pipes, and which has a low burning temperature and does not affect the flavor and aroma ofthe tobacco.

These and other objects and advantages of the invention will become apparent from the following description.

Briefly, the invention may be practiced as follows: Leaf tobacco that has been treated in the usual way, for example, by drying, curing, sweating, fermenting, aging, and then comminuted to particles passing through a ZO-mesh screen, and with a substantial portion of which are of a size to pass through a 40-mesh screen, is admixed with a substance decomposing to release carbon dioxide or water vapor at a temperature between about 500 F. and 800 F. and thus control the temperature of burning of the tobacco.

The amount of the temperature control substance admixed with the tobacco to produce the desired results varies depending upon the particular substance used and its decomposition temperature. In general, the temperature control substance added constitutes about 2 to 8% by weight of the tobacco mixture. The amount of the adjuvant substance being small and uniformly distributed throughout the mass of tobacco does not alter the taste and aroma of the tobacco.

The following examples are illustrative of the specific embodiments of the invention, it being understood that the examples are not intended to be limitative except as set forth in the claims appended hereto.

mately 900 F. to 525 F. by the cooling 2,972,557 Patented Feb. 21, 19 61 ice The parts given in the examples are by weight unless otherwise stated.

Example I To a blend of 40 parts of Wisconsin tobacco, 44 parts of Pennsylvania tobacco and 16 parts of Havana tobacco comminuted to a particle size of 20 to 40 mesh is added 5 parts of sodium bicarbonate, the latter being thoroughly distributed throughout the tobacco particles by a mechanical mixer. Thereafter the tobacco carbonate mixture is made into a cigarette in the usual manner. The temperature of the burning cigarette is reduced from approxiproduced by the evolution of carbon dioxide at temperatures above 520 F.

Example I! To a blend of Pennsylvania leaf tobacco and Example 111 A tobacco blend as in Example I is made up and 6% by Weight of potassium bicarbonate admixed therewith and thoroughly and uniformly distributed throughout the mass of tobacco fines, to provide a tobacco mass which burns at a temperature of about 600 F.

Additional adjuvants such as glycerine, glycol or the like may be included along with the temperature lowering substance Where desired. Also flavoring additives and the like substances may be present.

The essential feature of the invention is the incorporation of a non-toxic substance in the tobacco mixture which decomposes during burning of the tobacco to release water vapor. or harmless cooling gas to keep the burning temperature as low as possible and particularly below 800 F. The temperature lowering material must release a non-toxic. cooling substance during burning of the tobacco mass, e.g. in a cigarette or pipe mixture to thus avoid volatilization and releasing of harmful constituents into the tobacco smoke.

What is claimed is:

1. Smoking tobacco containing approximately 6% by weight of alkali metal bicarbonate.

2. Smoking tobacco containing approximately 6% by weight of potassium bicarbonate.

3. A smoking tobacco mixture comprising a blend of tobacco particles admixed with 5 to 8% by weight of alkali metal bicarbonate.

4. A smoking tobacco mixture comprising a blend of tobaccos comminuted to a particle size of 20 to 40 mesh, and to which is incorporated approximately 5 to 8% of an alkali metal compound selected from the group consisting of sodium bicarbonate, potassium bicarbonate, and potassium ruthenate.

5. A smoking tobacco mixture for cigarettes, pipes, and the like, which comprises tobacco particles containing volatilizable compounds which are injurious, said tobacco mixture containing a burning temperature control prising tobacco leaf particles and sodium bicarbonate adapted to thermally decompose and thereby release carbon dioxide during the burning of said tobacco filler whereby the temperature of the burning cigarette is maintained low and below the volatilization temperature of injurious hydrocarbon compounds ordinarily present in burning tobacco smoke.

7. A cigarette having in combination, a tobacco filler, a cigarette wrapper disposed directly about and in contact with said tobacco filler, said tobacco filler comprising tobacco leaf particles and a non-toxic alkali metal bicarbonate adapted to thermally decompose and thereby release carbon dioxide during the burning of said tobacco filler whereby the temperature of the burning cigarette is maintained low and below the volatilization temperature of injurious hydrocarbon compounds ordinarily present in burning tobacco smoke, said adjuvant comprising an alkali metal salt uniformly distributed throughout the tobacco filler.

References Cited in the file of this patent UNITED STATES PATENTS Schnieder Jan. 12, Arnold May 28, Bosse July 24, Sharlit Sept. 4, Lowenthal Feb. 4, Allen Apr. 19, Norton Feb. 19,

FOREIGN PATENTS Germany Nov. 12,

OTHER REFERENCES

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US467055 *Sep 2, 1890Jan 12, 1892 Cured tobacco
US675185 *Jan 3, 1901May 28, 1901Frederic E ArnoldCigar.
US1462480 *Sep 17, 1920Jul 24, 1923Frederick J BosseSmoking mixture
US1972718 *Aug 28, 1930Sep 4, 1934Sharlit HermanTreatment of tobacco
US2029494 *Feb 13, 1933Feb 4, 1936Fed Tobacco CorpTreatment of tobacco
US2114281 *May 15, 1936Apr 19, 1938Raymond P AllenTobacco and process of treating same
US2586701 *Feb 5, 1949Feb 19, 1952Norton Sereno GTobacco
DE869465C *Oct 31, 1950Nov 12, 1953Hauni Werke Koerber & Co KgVerfahren zum Loeschen des Zigarettenrestes
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3136319 *Dec 13, 1962Jun 9, 1964Brown & Williamson TobaccoSmoking tobacco product having menthyl keto ester additive
US3297039 *Dec 11, 1963Jan 10, 1967Dexter CorpTobacco web material
US4776353 *Jun 19, 1986Oct 11, 1988Ab LeoTobacco compositions, method and device for releasing essentially pure nicotine
US4848376 *Jan 26, 1988Jul 18, 1989Ab LeoTobacco compositions, method and device for releasing essentially pure nicotine
US4907606 *Jan 26, 1988Mar 13, 1990Ab LeoTobacco compositions, method and device for releasing essentially pure nicotine
US8997753Jan 31, 2013Apr 7, 2015Altria Client Services Inc.Electronic smoking article
US8997754Jan 31, 2013Apr 7, 2015Altria Client Services Inc.Electronic cigarette
US9004073Jan 31, 2013Apr 14, 2015Altria Client Services Inc.Electronic cigarette
EP1432322A1 *Aug 29, 2002Jun 30, 2004Philip Morris Products Inc.Tobacco smoking mixture for smoking articles such as cigarettes
EP2430928A2 *Aug 29, 2002Mar 21, 2012Philip Morris Products S.A.Tobacco smoking mixture for smoking articles such as cigarettes
WO1986002528A1 *Oct 29, 1985May 9, 1986Sven Erik Lennart NilssonTobacco compositions, method and device for releasing essentially pure nicotine
Classifications
U.S. Classification131/352
International ClassificationA24B15/28
Cooperative ClassificationA24B15/287, A24B15/28
European ClassificationA24B15/28H, A24B15/28