US 3079928 A
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H. C. JENsEN SMOKING PIPES Filed Oct. '7', 1957 March 5,- 1963 INVENTOR. Hans C. Jensen BY 6 1mm of ATTORNEY United States 3,079,928 SMOKING PIPES HansC. Jensen, 216 Harrison St., Port Clinton, Ohio Filed Oct. 7, 1957, Ser- No. 688,537 1 Claim. (Cl. 131-201) g The present invention relates to a:sm oking pipe and has for an object to provide a smoking pipe having a-cooler and drier smoke and in which the so-called wet-heel has been substantially .reduced, thus reducing the strong smoke and the frequent lighting required thatresults from smoke ing into this wet and difficult to burn tobacco at the "bottom of the pipe. At the same time it is an object of this invention to provide such a pipe which can be easily Patented Mar. 5, 1953 ice The plate 12 comprises in effect a transverse partisan the bowl 3 for the bore 9 that divides it into a tobacco chamber 15 at the top of the bowl and a smoke chamber 16 in the bottom of the bowl. As illustrated in the draw- ,ings the smoke chamber 16' is formed with a lower portion or surface ,17 that is substantially in the shape of an inverted cone with the .apex at the opening 10 at the bottom of the bowl, and with an upper portion .or surface 18 that is substantially cylindrical.
In .the smoking of a pipe .as illustrated in FIGS. 1 and 2, the smoke from the tobacco in the chamber 15 asses through the opening 13 in the plate 12- into the smoke chamber 16 in the bowl 3, and from there through the opening 10 into the smoke chamber 4 of the stern v1 and cleaned of the residue of the condensation productsof the 15 finally ihrugh the Smfike P s 5 and 6 f the Stem I smoke.
Having in mind the above and other objects that will be evident from an understanding of this disclosure, the invention comprises .the devices, combinations and arraugements of parts as illustrated in the presently prefer-red embodiment of the invention which is hereinafter set forth in such detail as to enable those skilled in the art readily to understand the function, operation, construction and advantages of it when read in conjunction with the accompanying drawings in which:
FIG. 1 is a sectional view longitudinally of a smoking pipe having a bowl embodying the present invention.
FIG. 2 is a plan view per se of the metal insert used in the pipe of FIG. 1.
FIG. 3 is a sectional view of a bowl embodying the present invention and illustrating a modification of the invention.
FIG. 4 is a sectional view of a bowl for a smoking pipe as heretofore constructed.
With reference to the drawings, there is illustrated a smoking pipe comprising generally a stem 1, a mouthpiece 2 and a removable bowl 3. The stem 1 has an enlarged end provided with a smoke chamber 4 and a smoke passage or bore 5 communicating with the chamber 4 at a point spaced above the bottom of the chamber 4 and extending longitudinally of the stem 1 to the opposite end thereof. The mouthpiece 2 is frictionally secured to the end of the stem 1 opposite from the chamber 4 and is provided with a smoke passage 6 extending from end to end longitudinally through the same and communicating with the passage 5 in the stem 1 to form a continuous smoke passage from the chamber 4 through the stem 1 and mouthpiece 2 to the free end of the mouthpiece. The chamber 4 is open upwardly and receives the lower end of the bowl 3 which is removably secured therein, the upper free edge of the stem about the opening into the chamber 4 being provided internally with threads 7 that cooperate with external threads 8 on the periphery at the bottom of the bowl 3. As illustrated in FIG. 4, the bowls as shown at 3" of smoking pipes have heretofore been provided with a bore or cavity 9" having cylindrical side wall positions, a dished bottom, and external lower threads 8" the cavity extending inwardly from the top thereof, and an opening 10" at the bottom of the bowl, leading from the bore 9" into the smoke chamber 4 of the stem 1.
In accordance with the present invention, as illustrated in FIGS. 1 and 2, the bowl 3 is oounterbored to provide a shoulder 11 spaced from the bottom of the bowl for sup porting a metal plate 12 having a centrally disposed opening 13. The plate 12 is preferably dished or curved to coincide substantially with the curvature of the bottom of the original bowl as illustrated in FIG. 4, and is provided at the periphery with serrations 14. The diameter of the plate is slightly larger than the diameter of the bore 9 so that when it is inserted into the bowl, it will be firmly seated and held on the shoulder 11.
and cooling accomplished in the chamber 4 in the stem.
Condensation occurring in the chamber 16 of the moisture and tars in thesmoke, because of the shape of thesu'rfacc 17, readily drains through the opening 1'0 into the bottom of the smoke chamber 4 where it is accumulated and from which it can be removed when the pipe is cleaned. The smoke having passed successively through the chambers 16 and 4 is thus cooler and drier as it issues from the passage 6 in the mouthpiece 2. At the same time, with the tobacco supported on the plate 12 rather than directly on the bottom of the bowl 3, and since condensa- *tion products accumulated in the bottom of the chamber 4 are effectively prevented from contacting the bottom of the tobacco in the chamber 15, for example in the event that the pipe is tilted, the bottom of the tobacco remains relatively dry. In this manner there is avoided the socalled wet heel which when the wet tobacco is burned, results in a strong smoke and extingnishes the burning. Thus, not only is the smoke cooler and drier, but also, the bottom of the tobacco remains dry so that it can be burned completely without producing a strong smoke and without requiring that it be frequently lighted.
The condensation of the moisture and tars in the chamber 16 of course results in a residue deposited on the walls thereof. In order to remove the accumulation of the residue Without requiring removal of the plate 12, the lower surface 17 of the chamber 26 is formed as described above in the shape of an inverted cone with the apex at the opening 10 in the botom of the bowl 3. Thus, the interior of the chamber 16 is accessible for cleaning without requiring a special tool simply by means of a blade or similar instrument inserted through the opening 10 when the bowl 3 is removed from the stem 1.
One significant advantage of the embodiment of the invention illustrated in FIG. 1 is that it can be applied to existing as well as new pipes since it requires only counterboring the bowl to form the shoulder 11 and shape the bottom of the bowl as indicated by the surface 17, and providing a plate 12. The cylindrical upper surface 18 of the chamber 16 represents the original inside diameter of the bore 9.
The modification of the invention illustrated in FIG. 3 is the same in function and operation as the previously described embodiment and corresponding parts thereof are designated by the same but primed refernce numerals. This modification of the invention difiers from the previously described embodiment only in that the plate 12 is not used and a separating wall 19 between the tobacco chamber 15' and smoke chamber 16' is formed as an integral portion of the bowl 3'.
Numerous alterations of the structure herein disclosed will suggest themselves to those skilled in the art. However, it is to be understood that the present diclosure relates to a preferred embodiment of my invention which is for purposes of illustration only and not to be construed as a limitation of the invention. All such modification's'wh-ich do not depart from the spirit of the invention are intended to be included within the scope of the appended claim. 7 I v Having thus described the nature of the invention, What I claim herein is:'
In a smoking pipe, a stem having an upwardly open smoke chamber at one end and a bore extending 1on- "gitudina'lly of said stem and opening into said smoke chamber, a removable bowl having an upwardly open cavity and an integral bottom Wall, cooperating threads on said stem and said bowl releasably securing said bowl to said stem with the bottom wall of said bowl closing said upwardly'open smoke chamber in said stem, and a transverse partition'in said cavity spaced above said bottom wall and dividing said cavity into a tobacco chamber in the top of said bowl above said partition and a smoke chamber in the bottom of said bowl between said partition and said bottom wall, said partition having an opening for the passage of smoke therethrough, said bottom wall having a centrally disposed opening therethrough bounded by a cylindrical side wall and defining a smoke passage between said smoke chambers in said bowl and said stem, said bottom wall having an inner surface in the smoke chamber in said bowl formed in the shape of an inverted cone with an apex centrally of the opening in said bottom wall, said :opening having a diameter dimensioned relatively to the thickness of said bottom wall so that the projection beyond said apex of every straight line defined by said inner surface of said bottom wall and said apex passes through said opening and at all points is spaced from said bottom wall to provide access to every point on said surface by means of a blade-like instrument inserted through said opening when said bowl is removed from said stem for the purpose of cleaning the smoke chamber in said bowl.
'References Cited in the file of this patent UNITED STATES PATENTS 903,710 Haatvedt Nov. 10, 1908 1,545,964 Laucks' July 14, 1925 1 ,955,099 Silverthorne Apr. 17, 1934 2,581,169 Bngg Jan. 1, 1 952 V FOREIGN PATENTS 770,428 France June .25, 1934 6,141 Great Britain AD. 1894