US975251A - Tobacco-pipe. - Google Patents

Description

W. M. KEBNAN.

TOBACCO PIPE.

APPLICATION FILED AUG. 23, 1909.

Patented Nov. 8, 1910.

5 I hue/moo b 2 m m z WALTER M. KEENAN, or DENVER, COLORADO.

ronacco-rrrn.

Specification of Letters Patent.

Patented Nov. 8, 1910.

Application filed August 23, 1909. Serial No. 514,280.

as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompany? ing drawings, and to the letters and figures of reference marked thereon, which form apart of this specification.

My invention relates to improvements in tobacco pipes, my object being to supply the tobacco within the bowl of the pipe with air and promote combustion to a greater extent than can be supplied at the opening at the top of the pipe bowl. I

I have found by experiment that the formation of nicotin in pipes, is largely, if not entirely, due to imperfect combustion of the tobacco within the pipe bowl and results from the smothering, so to speak, of the fire, whereby combustion is retarded.

In my improved pipe, I make I'OVlSlOIl for. introducing air below the top 0 the pipe bowl, whereby oxygen may be supplied to the tobacco for the purpose of combustion at various points between the top and the bottom of the bowl. In this manner, air is allowed to enter, not only at the top ofthe bowl, but also at oints below simultaneously, thus making it practicable to promote combustion to any degree desired. I find by this construction of pipe, that the de osit of nicotin within the stem and bowl 0 the ipe may be practically prevented; in fact it seems that the generation, or production of nicotin is obviated by the complete combustion, to which the tobacco is subjected.

In the specific construction disclosed in the drawing, forming a part of this appli-' cation, the pipe bowl is provided with a numberof perforations which are inclined downwardly from their outer extremities, thus preventing the possibility of the escape of the tobacco through the said ports or perforations, when the pipe is held in the proper osition for smoking. I have also shown t ese perforations, ducts or ports provided with a metal lining consisting of small sleeves or tubes which are introduced into the said perforations and upset at their 'op posite extremities; that is to say on the inner and outside surfaces of the ipe bowl, where-v by they, are retained in p ace. lining for the perforations, or ducts, pre' vents the burning of the bowl where the perforations are located, where thebowl is composed of wood, and also facilitates the work-of cleaning 'outthe perforations.

This I. ietal I Having briefly outlined my improved construction, I will proceed to describe the same.

in detail, reference being made to. the accompanying drawing, in which is illustrated an embodiment thereof.

In this drawing: Figure 1 is a side elevation of a pipe equippedwith my improvement. Fig. 2 is a top plan view of the same. Flg. 3 1s a vertical, longitudinal section taken through the plpe on the line 3-3, Fig.

2. Fig. 4 is a section of the pipe bowl, taken on the line 44, Fig. 2. Fig. 5 is a section similar to Fig. 4, showing a modified form of construction. I

The same reference characters indicate the same parts in all the views.

Let the numeral 5 designate the bowl; 6 the stem and 7 the mouthpiece of the pipe. The bowl is provided below-the top with a number of ducts 8, which are inclined downwardly from their outer extremities, which prevents the tobacco and ashes from sifting through the ducts. Three of these ducts are illustrated, but it must be'understood that any desired number may be employed. Each duct is provided with a metal lining 9,

which may consist of a tube inserted in the duct and. upset at its opposite extremities on the inner and outer surfaces of the .bowl, by the use of a suitable tool not shown.

In the form of construction shown in Fig. 5, the bowl is surrounded by a band 10, preferably composed of'metal and having a perforation 12, adapted to register with one of the ducts 8, preferably the'centrally-located duct, or that intermediate the up er and lower ducts of the bowl. This band is adjustable rotatively upon the bowl, and makes it practicable to close. one of the per forations, if desired, thus reducing the draft or the introduction of air to the tobaccocontained in the pipe bowl. This feature simply illustratesthe idea of controllingthe delivery ofv oxygen to the tobacco, since different qualities or" kinds of tobacco, or other material, which it may be desired to smoke, may require different quantities of air or oxygen,

therefore evident that provision may be loo made for; closing one or more of the other ducts of the bowl; I

. In order to support the band or ring 10, upon the pipe bowl, the latter is shown provided with a circumferential shoulder or rib 13, which is engaged by the lower edge of v the said band.

In further explanation of the use of my improved pipe, and the results obtained.

thereby, it may be stated that the nicotin appears to be instantly consumed oncontact with the fire and not precipitated asa viscons and semifluid substance in the bowl or other parts of the pipe; in other words, the

nicotin element or part of the tobacco appears to be consumed before its deposition or formation. The introduction of air through the ducts or perforations of the pipe bowl produces a moreeven and perfect combustion and prevents the customary increase of accumulation of nicotin below the zone of the fire, avoiding the simmerlng and stewing, so to speak, of the released nicotin with the remaining contents of the pipe,

and the resulting rank odors.

By reason of the admission of cold air through the lateral openings or ducts in the bowl of the pipe, theheat of the bowl is reduced to a minimum, thus rendering the smoke c001 and preventing burning of the tongue, as well as under secretion of. saliva.

The circulation of fresh, cool air 1n the 1 tobacco contents of the pipe through the lateral openings or ducts below the zone of the fire, keeps the tobacco cool and prevents the artial combustion and commingling of the fbeneficent tobacco odors, and the acrid and rank qualities before they are reached ow the to and having a perforation adapted to register with the outer extremity of the pipe-bowl perforation the latter having a metal lining whose inner extremity is upset .to prevent burning the bowl adjacent the perforation, for the purpose set forth.

2. A pipewhose bowl is provided with erfor'ations for the introduction of :air beow. the top thereof, the said perforations being inclined downwardly as they extendupset at the op osite extremities-of the perforations, for t e purpose set forth.

3. A perforations for the-introductionofair below the top thereof, thegsaid perforations pipe whose bowl. is provided with inwardly, and provided with metal linings being-inclined downwardly as they extendinwardly, a circumferential metal band-adjustably mounted on the bowl, the said band having a perforation adapted to register with the outer extremities of the perforations, and 'a oircumferentia flange integral with the pipe bowl for sup orting 4. A pipe whose bowl is rovided with relatively steep downwardlymclined perfo-' pi e bowl the said band, substantially as descri ed. 1

rations from the exterior surface of the bowl for the purpose of introducing air be low the top thereof, the said perforations bein "metal lined, the inner extremities of the lining being upset to prevent the burning of the bowl adjacent the perforations,

substantially as described.

5. A pipe-whose bowl is provided with a relatively steep, downwardly inclined perforation from the exterior surface of the bowl to the inner surface thereof, whereby air be introduced into the bowl of the pipe and the contents of the latter prevented from sifting I through the perforation, substan? tially as descrlbed.

6. A pipe whose bowl is provided with perforatlons having metal linings upset at their inner extremities, vto preventtheburning of thebowl adjacent the perforations, substantially as described.

-, 7. A pi e-whos'e bowl is provided wial ower an mdownward inclinedup er, 7 termediate perforations or introducing air into-the bowl of the pipe the said perforations being relatively steep, for the purpose set forth.

In testimony whereof I afiix my signature in'presence of two witnesses.

' WALTER M. KEENAN.

Witnesses:

A. J. OBRIEN',

J nssre F. HOBART.

It is hereby certified that in Letters Petent No. 975,251, granted November 8,

1910,'upon the application of Walter Keenan, of Denver, Colorado, for an improvement in Tobacco-Pipes, an errorappears in the printed specification requiring correction as follows: Page 2 line 31, the word under should read undue; and that the said Letters Patent should be read with this correction therein that the some may conform to the record of the case in the Patent Oflice.

Signed and sealed this 17th day of J anunry, A. 1)., 1911.

[sun] C. C. BILLINGS,

Acting Commissioner of Patents.

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