US2798497A - Smoking pipe - Google Patents

Description

July 9, 1957 J, LAVERTY 2,798,497

SMOKING PIPE Filed NOV. 29, 1955 e-qlgkl INVENTOR.. J0///V ZAVEPZY WWW.

ATTORNEY United States Patent SMOKING PIPE John J. Laverty, Philadelphia, Pa.

Application November 29, 1955, Serial No. 549,692

2 Claims. (Cl. 131215) This invention relates to smoking pipes, and particularly to a smoking pipe so constructed as to trap nicotinic juices and saliva during smoking and thus prevent the unpleasant inhalation thereof.

Anyone who has ever smoked a pipe has experienced at some time the unpleasantness of suddenly getting a mouthful of ill-tasting nicotinic juices from the smoking tobacco. In addition, saliva commonly collects in the pipe stem and is often withdrawn therefrom into the month while inhaling. These unpleasant circumstances can be prevented by proper pipe design.

With the above in mind, it is the basic objective of the present invention to provide an improved smoking pipe.

It is another object of this invention to provide an improved smoking pipe with a removable sump or trap adapted to collect the nicotinic juices and saliva during smoking, and thus prevent the tasting thereof by the smoker.

It is a further object of this invention to provide an improved smoking pipe with a removable sump which is capable of easy disassembly for cleaning purposes.

Another object of this invention is to provide an improved smoking pipe with a removable sump which is mounted in a removable plug contoured so as to blend with the external contour of the pipe.

A still further object of the invention is to eliminate the wet heel often formed in the ordinary pipe bowl and which causes offensive odors and objectionable tastes to the user.

These objects, together with other objectives and advantages to be derived from the present invention, will at once become apparent from the following detailed description and accompanying drawing, wherein similar numerals refer to similar parts throughout the several views.

Figure 1 is a side elevational view of a smoking pipe made in accordance with the present invention.

Figure 2 is a vertical cross-sectional view of the smoking pipe of Fig. 1 showing the internal structure thereof, and illustrating the removable trap or sump in elevation.

Figure 3 is a cross-sectional view of the forward end of the smoking pipe, as shown in Fig. 2, but with the removable sump and the plug in which it is mounted shown in cross-section and in exploded relationship.

Turning now to the drawing, the smoking pipe of the present invention is shown in its entirety in Fig. 1 and referred to therein by the letter P. The pipe P is constructed in two main pieces, and includes a bowl portion 10, and a mouthpiece 11 of conventional construction. Projecting forwardly from the bowl portion and re movably receiving the mouthpiece 11 is a stem 12. The bowl portion 10 is provided with a tobacco-holding chamber 13 which extends from a point within the bowl portion to its uppermost free end 14. Communicating with the chamber 13 and extending downwardly in a forward direction therefrom into the stem 12 is an inclined passageway 15 which connects with a draft bore 16 in the forward end of the stem 12. It is in the end of the draft bore 16 that the mouthpiece 11 is slidably received, as shownvin Fig. 2. Extending downwardly in a rearward direction toward the bowl 10 is a sump-receiving passageway 17 which at its forward end merges with the inclined passageway 15. The passageways 15 and 17 are angularly disposed with respect to (one another and also with respect to the draft bore 16. The rear end of the passageway 17 opens into a plug-receiving notch 18 in the base of the bowl 10, as shown in Fig. 3. The notch 18 is undercut as at 19 in Fig. 3 for a purpose to be described below. At a point adjacent to the point of merger of the passageways 15 and 17, the bottom wall of the stem 12 is provided with a peak 20 projecting into the bore 16 and acting as a baffle with respect to juices tending to flow into the bore 16.

Within the passageway 17 is a cylindrical sleeve 21 which is ordinarily permanently fixed in place. The sleeve 21 is preferably made from a suitable metal, such as brass or the like, in contrast with the briar construction of the pipe, and is adapted to slidably receive therewithin a trap or sump 22, as shown inFigs. 2 and 3. The sump 22 is preferably made from metal tubing, and has a cut-out portion in its forward end to provide a scoop 23 which ordinarily lies adjacent the point of merger of the passageways 15 and 17 for a purpose to be described below. The rear end of the sump is tapped, and the sump is threadably attached to a threaded stud 24 which is anchored in a plug 25, as in Fig. 3%. The plug 25 is preferably made from the same material as the pipe bowl, and is cut to fit the notch 18 in the base of the bowl. The portion of the plug 25 which is ordinarily exposed when the plug resides in the notch 18 is contoured to blend with the external contour of the bowl 10, to be relatively unnoticeable. In addition, the plug 25 is undercut as at 26 to correspond with the undercut 19. To facilitate the grasping and removal of said plug, indentations 27 are provided in the opposite sides thereof, as shown in Figs. 1 and 2.

Operation In assembling the present smoking pipe, the sump 22 is first threadably attached to the stud 24 anchored in the plug 25. The said plug and sump are inserted into the notch 18 of the bowl 10 so that the sump slides into the sleeve 21 in the passageway 17, with the scoop 23 of said sump immediately adjacent the point of merger of the passageways 15 and 17, as shown in Fig. 2. The mouthpiece 11 is then inserted into the draft bore 16 in the end of the stem 12. The pipe is now ready for smoking.

To discard the collected nicotinic juices and saliva, one need merely grasp the plug 25 at the finger indentations 27 and withdraw the plug and sump from the pipe by exerting a pull thereon. A mere flick of the wrist will then eject the collected debris therefrom. Should it become desirable or necessary to clean the sump 22, said sump may be detached from the stud 24 by unscrewing and cleaned with a conventional pipe cleaner.

The smoke as it leaves passage 15, enters an expansion chamber before reaching the peak 20. As the smoke expands therein it will give up heat; as is common in refrigeration systems. The loss in heat will result in the condensing of the moist matter in the smoke, which will flow through the passage 17 into the sump.

It is this expansion-refrigeration action, which extracts the liquid from the smoke and the passage 17 conveys that liquid to the sump, from which it can be discharged when convenient.

It will be noted that the sleeve 21 prevents wear of the briar of the pipe due to repeated withdrawal of the sump 22, whilethe cutback 19 provides a seat for the A plug 25 and preventsthe plug from inadvertently slipping out of the notch 18. By virtue of the fact that the outer surface of the plug 25 is contoured to blend with the surface contour of the bowl 10, it detracts but little from the aesthetic appeal of the pipe. In fact, with rough surfacing as is found in manypresent-day pipes, the plug 25 can go undetected.

While the present discussion of this invention-has been limited to the above-described preferred embodiment, variations thereof are possible without departing from the. spirit of the invention. It is to be understood, therefore, that the invention is .not to be limited to the particular embodiment disclosed, but rather only to the m ventive concept asdefined by theappended claims.

What is claimedis: I

1. In a smoking mouthpiece, ber therein,

pipe having a bowl, a stem and 'a' said bowl-having a tobacco receiving chama smoke duct in said stem connecting the bottom of the tobacco receiving chamber Withan expansion chamber intermediate of the stem, said duct being downwardly and inwardlyinc'lined toward said expansion chamber, a second duct leadingdownwardlyfrom said expansion chamberto -asump located below the tobacco chamber and outwardly of the'stem, said sump having a removable plug having a sleeve attached thereto, the plug conforming-w-ith the outer contour of the pipe bowl, said expansion chamber converging inwardly of the pipe, the inner end portion of the expansion chamber terminating in a baflle having a downwardly inclined portion in said stem, said stem having a horizontally disposed bore inwardly of said expansion chamber adjacent said inclined portion adapted to receive the outer end of the mouthpiece, whereby smoke may be drawn from the bowl to expand in the expansion chamber and be cooled thereby and therein, condensing the moist matter in the smoke to permit the condensed matter to flow downwardly and outwardly into said sump.

2. The pipe as recited in claim 1 wherein said sleeve is detachably attached to said plug.

References Cited in the file of this patent UNITED STATES PATENTS,

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