US1976496A - Tobacco pipe - Google Patents

Description

Oct. 9, 1934. s. J. HARRIS TOBACCO PiPE Filed Sept. 2, 1932 a l2 l6 INVb A ITOR 2 A TTOIRNE ya.

Patented Oct. 9, 1934 1,976,496 TOBACCO PIPE V Samuel J. Harris, Dayton, Ohio 2 Application September .2, 1932, Serial N0.'63'1,447

4 Claims.

invention relates to pipes in which to smoke tobacco, and more particularly to pipes adapted to deliver cool, pure smoke to, the mouths of smokers.

1 3 r efforts have been made to produce pipes .wall of the chamber.

adapted to deliver cool, pure smoke l believe my improvements are more effective than any heretofore preducedq' Furthermore, I have found a new method whereby to obtain this result, namely, the introduction of air into the smoke, which air becomes thoroughly mixed with the smoke before it reaches the smokers mouth.

Fig. 1 is a longitudinal sectional elevation of 'my pipe, and

Fig. 2 is a sectional plan of the tobacco bowl and cooling chamber, taken on line 22 of Fig. 1.

The pipe comprises a tobacco bowl 10, a cooling chamber 11, a passage 12, connecting the bowl and cooling chamber, a stem 13, and a passage 1% that taps the cooling chamber at its upper part and carries smoke through the stem to the mouth of the smoker. The bottom of i the cooling chamber consists of a removable cap 15, which screws on a nipple 16 that is secured in the chamber. The pipe may be made of any suitable material, such as wood or meerschaum, and preferably the cap 15 and nipple 16 are made of metal. At 17 a small hole or vent is bored through the rear wall of the cooling chamber 11. The passage 12 may be radial to the chamber ll, as in Fig. 1, or tangential, as in Fig. 2.

One function of the chamber 11 is to cool the smoke. This results from the fact that only a small portion of the wall area of the cooling chamber is heated by the burning tobacco in the bowl, all of the remainder of the wall area being exposed to the cooling influence of the atmosphere. The smoke passes through the chamber slowly and lazily, giving it time to be cooled by contact with the comparatively cool The smoke naturally rolls through the chamber in the characteristic way in which smoke rolls from a chimney. Where the passage 12 is tangential, as in Fig. 2, a circular or helical movement is imparted to the smoke in the chamber. This circular movement produces centrifugal force which throws the smoke against the chamber wall and cools it more eiiectually. In order to reduce the area of heated chamber wall, a slot 18may be out between the bowl and chamber, as in Fig. 1, leaving only enough material around :the passage 12 to properlyunite the parts.

There is an advantage in having the smoke,

enter the chamber 11 at its lower part-and leave at its upper part. Whenthe smokeris i drawing on the stem the smoke ,ismade, to move upward in the chamber. Between drafts'the smoke ceases to rise, gins to gravitate.

:and at; least part of it be The smoke is the gaseous product of the burning tobacco, the visible portion of the smoke being small particles of carbon. This solid matter being heavierthan the gas it falls toward t when there is insum tain or raise it. Thus the intermittent drafts at he bottom of the chamber cient upward draft to susthe stem result in alternate up and down movement of the smoke in the chamber. During these up and down movements some of the solid particles in the smoke, especially the larger ones,

gravitate to the bottom of the chamber, whence they can be removed i=5:- from time to time, together with any other foreign matter that may have accumulated there by removing the cap 15.

this way a considerable degree of purification of the smoke is effected Further purificatio n of the smoke is effected by the jet of cool air that enters the chamber 11 through the vent 1'7. This jet of air passing transversely of the rising column of smoke condenses the nicotine in the smoke, which becomes precipitated to the b 8.5" ottom of the chamber and is removed along with other matter when the chamber is cleaned.

Where the smoke is caused by the tangential passage 12 to move in a circular path the jet of air is still more effective as a puri- The nicotine being the most pernifying agent.

cious element in tobacco it is evidently a useful service to remove in smoke.

to the stem.

ore or less of it from' the The vent 17 is also Very efiective in cooling the smoke, thereby delivering cool smoke The vent 1'7 is enough smaller than the passage 12 so, that it does not materially reduce The chamber 11 Moreover, the size o dilute or cool the smoke. serves as a receptacle for small particles of tobacco or ash that may pass through the passage or other fluid that may flow from the stem, all

12. It also receives saliva of which accumulate in the lower part of the chamber to be removed from time to time through the large ope ing the cap 15.

'ning aiforded by unscrew While I have illustrated and described what the connection from the bowl to the chamber being lower than the connection from the chamher to the stem, the side wall of the chamber being concentric to its vertical axis, free from projections, and having an opening for a vent at a height intermediate said connections from the bowl to the chamber and the chamber to the stem, said chamber having a capacity approximately equal to the capacity of the bowl, thereby causing the smoke to pass through it slowly and lazily.

2. In a tobacco pipe, a tobacco bowl, a tubular stem and a cylindrical chamber through which smoke passes in moving from the bowl to the stem, the connecting passage from the bowl to the'chamber being lower than the passage from the chamber to the stem, and substantially tangential, thereby causing the smoke to move in a substantially helical path in the chamber, and a vent through which air enters the chamber to mix with the smoke.

3. In a tobacco pipe, a tobaccol bowl, a tubular stem and a cylindrical chamber through which smoke passes in moving from the bowl to the stem, a passage connecting the bowl and chamber, said passage being substantially tangential to an imaginary circle of which the vertical axis ofthe chamber is the axis, whereby the smoke in the chamber is made to move in a substantially circular or helical path, and

" a' vent through which air enters the chamber .to mix with the smoke.

4. In a tobacco pipe, a tobacco bowl, a tubular stem, and a chamber through which SAMUEL J, HARRIS. I

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