US 1985840 A
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Patented Dec. 25, 1934 SMOKING TOBACCO Samuel S. Sadtler, Erdenhelm, Pa.
No Drawing. Application November 28, 1927, Serial No. 236,012
My invention relates to a preparation to be used in pipes or otherwise in tobacco smoking and has for its object the removal of certain disagreeable elements of the tobacco smoke as I shall explain in the sequel.
Pipe smoking has many pleasant and desirable features, but doubtless most smokers experience many moments far from pleasant when they get disagreeable tastes due to something unexpected coming into the mouth from the tobacco smoke or from accumulations in the pipe stems. These things happen even when pipes are cleaned frequently and changes are made to different pipes.
I have found that if certain inorganic absorbing substances are placed in the pipe bowl before filling in the tobacco and then the tobacco is smoked in the regular way greater general satisfaction results. I have found that rank, sour smelling substances are absorbed or condensed in the packing material I use. Pipes do not have to be cleaned as often when my material is used and generally less water collects in the pipe stems. I have also found that stronger and fuller flavored tobaccos may be used which add to the pleasure of smoking.
I have tried a great many substances in granular form or compressed into porous tablets. Some materials such as highly absorbing carbons used in gas masks, made from especially dense substances such as cocoanut shells takes so much from the tobacco smoke as to spoil its flavor entirely. Substances of a basic nature should not be used as one is apt to get the organic base nico tine in the smoke, which otherwise would be neutralized and held in the acid fluid that normally forms in the pipe stems.
The substances which I find satisfactory for the purpose are those colloidal or semi-colloidal substances that are negatively chargedsuch as carbon and silica.
When I speak of carbon I means an amorphous form such as charcoal or carbon black. I have found charcoal from soft woods suitable and that from hard woods quite suitable after removing the soluble alkaline salts by washing. I wash hard wood charcoals with a little hot acetic acid followed by hot water. When hard wood charcoal is freed of these alkaline salts I believe it then acts as a negatively charged colloid. Willow charcoal seems to be fairly satisfactory probably because it does not contain much of alkaline salts.
Colloidal silica made from silicate of soda in well known ways has satisfactory properties.
Some colloidal silicates such as some fullers earths, with a high silica content are fairly satisfactory, especially in admixture with carbon.
The form of the absorbing substance is important for practical reasons. If granular, the grains must be large enough so as not to be drawn into the pipe stem in smoking. I prefer to use powdered materials which are compressed into pellets or cakes. These may be of such size and shape as to easily fall into place in the bottom of the pipe bowl. I have found a form of flattened sphere to be suitable as to shape. The edges may be irregular or serrated to prevent clogging, if much moisture condenses on it.
I have made up a number of mixtures that were satisfactory using colloidal silica made in different ways and fullers earth with charcoal but the following formula can be made from easily procurable materials.
Parts by weight Fullers earth Willow charcoal 20 Bentonite 20 These powdered substances are thoroughly mixed and then dampened sufficiently so as to press them into the desired shapes from molds as with the use of tablet machines.
Pellets suitably shaped and made fairly porous or perforated may be used in the stems of cigars to modify the smoke so as to make it milder or smoother, especially for constant smokers.
Coloidal silicic acid and similar colloids may be mixed in smoking tobacco and used with some degree of satisfaction.
What I desire to claim is:
1. A composition for improving the flavor of smoking tobacco, comprising a mixture of colloids, one of said colloids being bentonite.
2. A composition for improving the flavor of smoking tobacco, comprising a mixture containing artificially precipitated colloidal silica and bentonite.
3. A composition for improving the flavor of smoking tobacco, comprising a mixture of artificially precipitated colloidal silica, substantiallyalkali-free charcoal, and bentonite.
4. A composition for improving the flavor of smoking tobacco, comprising a mixture of infusorial earth, substantially-alki-free charcoal, and bentonite.
5. An article of manufacture for improving the flavor of smoking tobacco, comprising a shaped body containing infusorial earth, substantiallyalkali-free charcoal, and bentonite.
6. A composition for smoking consisting of smoking tobacco, charcoal, and a colloidal silicic acid.
'7. A smokers mixture comprising smoking tobacco and silica gel in powdered form intermingled with the tobacco.
8. An association of a smoking tobacco and silica gel in a smokable unit with the gel arranged in the'path of volatilized ingredients of the tobacco, to the smoker.
9. Method of obviating the injurious influence of nicotine and methyl alcohol in tobacco smoke, comprising bringing the tobacco smoke, between the burning tobacco and the mouthof the smoker, into contact with silica gel, whereby the nicotine and methvl alcohol are adsorbed on the silica gel as set forth.
10. Process for obviating the injurious influence of nicotine and methyl alcohol in tobacco smoke, consisting in embedding a quantity of silica gel in the smoking tobacco and causing all the smoke from the tobacco to contact with the silica gel before reaching the mouth of the smoker.
11. Treatment of tobacco which comprises causing the products of combustion thereof to pass over a colloidal silicate having the property of forming with water a gel.
12. Treatment of tobacco during the smoking thereof which comprises causing the products of combustion to pass over a colloidal silicate earth. 13. Treatment of tobacco during the smoking thereof which comprises causing the products of combustion to pass over bentonite.
14. A shaped article for smoking, comprising tobacco, one end of whic is to be inserted in the mouth, and having an a orbent containing bentonite associated with the tobacco near the mouth portion end.
SAMUEL S. SAD'I'LER.