US2956568A - Pipe for tobacco - Google Patents

Description

/ff 6V /z III |l|||| llllalmlinlmnv n mr/Wvzvwmx INVENTOR ATTORNEYS ...m 1o, 1850 M KNUDSEN PIPE FOR TOBACCO Filed Sept. 18. 1956 mullm` United States Patent 2,956,568 Patented Oct. 18, 1960 PIPE FOR TOBACCO Magnus Knudsen, `Corrientes St. 1393, Buenos Aires, Argentina Filed Sept. '18, 1956, Ser. No. 610,532

Claims. (Cl. 131-184) This invention relates to a smoking pipe, and more especially to a pipe in which several problems are solved.

In the pipes presently in use when the aperture in the bottom of the pipe bowl becomes clogged it sometimes is necessary to remove the fdottle in order to introduce through the bowl a pick to remove the obstruction. Frequently, however, in attempting to remove the clogging material some of the materal is pushed into and becomes jammed in the aperture out of reach of the pick.

An object of the invention is to provide means by which the passage from the stem to the bowl of a pipe may be cleared without emptying the bowl.

A further object of the invention is to provide means for elimination of the collected moisture without interruption of smoking or requiring dismantling of the pipe.

Further objects reside in the provision of a cool smoke, and a spatterless liquid removal part.

Other and further objects and advantages will appear from the following specification taken with the accompanying drawing in which like characters of reference refer to similar parts in the several views and in which,

Figure 1 is a longitudinal section of the pipe of the present invention with the cleaning means in operation,

Figure 2 is a similar section with the cleaner in normal retracted position, a portion of the bowl being omitted,

Figure 3 is a transverse section taken at 3 3 of Figure 1,

-Figure 4 is a transverse section taken at 4-4 of Figure 1,

Figure 5 is a transverse section taken at 5-5 of Figure 1,

As seen in Figures 1 and 2, a bowl 1 is provided with cavity 2 to receive tobacco through opening 3.

At the bottom of cavity 2 a threaded hole 4 of fairly large diameter is provided into which a screw plug 12, forming the bottom of the tobacco cavity, is screwed or unscrewed by inserting a tool into slot 13. Screw plug 12 is provided with a concave upper surface 10 blending into a central aperture.

Stem 5, which is integral with bowl 1 is provided with a longitudinal bore 7 extending beneath the hole 4 and having the end of said bore extending beyond the bowl cavity 2. It will be seen that this bore is open at both ends. The end under the bowl is rounded as at 9 and extends to an opening 8. The bowl 1 and stem 5 are preferably of wood, such as briar root, but may be of other appropriate material.

A tubular bushing 18, 19 substantially lls bore 7, and is provided with a central bore 26. The portion of the bushing 18 that closes the opening 8 in the pipe material is provided with a ange 21 defining a-n aperture 20, through which, as will later appear, the condensed moisture is ejected. The end of bore 26 at the tend of the bushing that closes opening 8 in the pipe is closed except for aperture 20, and conforms generally to the shape 9 of the end of bore 7.

A notch 24 is formed on the upper surface of bushing 18, |19. A disc 14 is seated in threaded aperture 4 and in notch 24 to retain bushing 18, 19 against rotation. Disc 14 is provided with a slanting smoke flue 16, and bushing 18, 1-9 is provided with a complementary slanting smoke flue 25 extending from bore 26 to notch 24. A small bore 27 is provided in bushing 18 lying parallel to bore 26 and intersecting smoke flues 16, 25 at an angle. A slot -28 of sulcient length to provide for movement of an element 29, 30 therealong, as described below, to the extent required for said element 29, 30 in performance of its function, connects bore 27 to bore 26, and a plug 32 seals the end of bore 27 and slot 28 at the end of bushing 18, 19 remote from said bowl.

Within bore 27 is a rod 30, provided on its end remote from the bowl with a pin 29 extending through slot 28 into bore 26. At the end of rod 30 adjacent its point of intersection with smoke Iilues 16, 25 a flexible element 31 is mounted to form an extension of rod 30. The length of rod .30, and flexible extension 31 is such that it may lie entirely within bore 27 as seen in Figure 2 when retracted or, as seen in Figure l may be moved toward the bowl so that the flexible extension 31 of the rod will project upwardly through smoke flue y16. The means to actuate rod 30, 31 by pin 29 will be explained below when Valve element 33 is described.

The radial outer surfaces of `bushing 18, 19, as will be seen in Figures 3 and 4 may be provided with passages 22 that extend from one end of bore 7 to the other to provide for the presence of cool air along bushing 41s, 19.

Within bore 26 is a valve element 33 provided with a central axial smoke passage 36. The end of element 33 adjacent the bowl of the pipe tits the end of bore 26 snugly and is provided with an aperture 37, which, in one position of element 33 as seen in Figure l will align with aperture 20 for ejection of moisture from passage 36, but in the normal position of Figure 2 will be sealed oli by the end 35 of bore 26. The flange 21 is so formed that moisture from aperture 20 will accumulate in drops on the flange 21, since the edge of the opening 20 is sharp the drops that come through opening 20 will drop off and will not creep along the outer surface of said bowl. When valve element 33 is in normal position, as seen in Figure 2 an aperture 38 in the wall of valve element 33 will be in alignment with smoke flues 25 and 16.

It will be noted in Figure 2 that the rod assembly 30, 31 is in a position considerably to the left of its position in Figure 1. A helical cam groove 39 in the outer surface of valve element 33 receives the end of pin 29 so that, as described above, it extends into bore 26 so that as the valve element 33 is rotated by rotating of the mouth piece from the Figure 2 position to the Figure 1 position the pin will be urged by the helical cam groove 39 into the position of Figure 1, and reverse rotation will return the rod to the Figure 2 position.

It is necessary that Valve element 33 be secured in place. For this purpose element 33 extends at 41 considerably beyond the end of stem 5 and is provided with a ange 42. The end 41 of valve element 33 beyond ange 42 remote from said bowl is slotted as at 40 to provide resilience to frictionally grip a pipe hit 48 as explained below.

A threaded ferrule 43 ts over flange 42 and is provided with an aperture through which the end `41 extends. The end of stem 5 remote from said bowl is threaded at 6 to engage threads 44 of ferrule 43. IIt will be seen, then that valve element 33 may be securely held against axial movement in bore 26 while permitting rotary movement.

Ferrule 43 is further provided with Ventilating ports 4S which give access to space 23 between the end of stem 5, fer-rule 43, and ange 42, so that the air space provided by passages 22 along bushing 18, 19 is connected to atmosphere. i

A pipe bit '48 with a smoke pasage 49 for communication with smoke passage 36 of valve element 33 is provided. One end of passage `49 is enlarged at 47 to receive the extension 41 of the valve element 33.

As will be seen in Figure 5 the shape of the enlargement 47 and the end 41 are made in complementary interfitting non-circular configuration to give a positive wrench-like lit so that valve element 33 may be rotated by rotation of bit 48 with respect to bowl 1.

I claim:

1. In a tobacco pipe having a bowl and a stem extending exteriorly laterally from the bottom of said bowl, said stem having a primary bore coaxial thereof, a tubular bushing in said primary bore, means providing a smoke ue extending from said bowl at an angle toward and into said stem, means providing a secondary bore in said bushing parallel with said primary bore and intersecting said smoke iiue, said bushing having a slot connecting said secondary bore to the interior of said tubular bushing, a -rod in and extending axially of said secondary bore provided with a pin extending through said slot at the end remote from said bowl, said rod being provided with a flexible portion on its end adjacent the point of intersection of said secondary bore with said smoke flue, a rotary tubular element within said tubular bushing provided with a mouth engaging bit at its end remote from said bowl and provided at its end adjacent said bowl with a smoke aperture normally communicating with said smoke line, and provided on its outer surface with a helical cam groove receiving said pin, whereby upon rotation of said rotary tubular element said rod is moved axially of said secondary bore by means of the cam action of said helical groove on said pin so that the flexible end of said rod is thrust into said smoke ue and is deflected because of the angle between the smoke flue and said rod upwardly toward said bowl.

2. The tobacco pipe of claim l, in which the end of said bushing is provided with an eccentric drain opening and said rotary tubular element is provided with an eccentric drain opening so arranged that when the said smoke aperture is in Comunication with said smoke iiue said drain openings are out of alignment and upon rotation of said rotary element said drain openings are brought into alignment.

3. The tobacco pipe of claim 2, in which spaces are provided between said bushing and said stem extending from end to end of said primary bore whereby provision is made for the presence of air along said stem.

4. The tobacco pipe of claim 2, in which the outer side of said drain opening in said bushing is provided with an outwardly extending and undercut flared lip whereby liquid passing through said drain opening will leave the pipe in drops.

5. In a tobacco pipe having a bowl and a stem portion extending laterally therefrom at the bottom of the bowl, means providing a rst bore extending coaxially of said stem portion, means providing a second smaller bore in said stem portion extending parallel to said rst bore, said second bore terminating at the base of said bowl portion, said stem portion including a slot extending interiorly along said stem portion and connecting the interiors of said first and second bores, means providing a smoke ue extending from the bottom of said bowl into said first bore at an angle toward said stem portion, the portion of said means forming one portion of said smoke liuc forming an upwardly angled deilecting end Wall of said second bore, a rod in said second bore provided with a pin at the end of said rod remote from said bowl extending through said slot into said first bore, said rod being provided with a flexible end portion adjacent said smoke flue, a rotatable tubular element in said iirst bore provided with a mouth engaging bit extending from said stem portion and provided at its end within said stem portion adjacent said bowl with means forming a smoke aperture normally communicating with said smoke flue, and provided on its outer surface with a helical cam groove receiving said pin, whereby upon rotation of said rotary tubular element said rod is moved axially of said second bore so that the flexible end of said rod is thrust into said smoke ue and is deflected by said end wall of said smoke ue, said first bore being closed at its end adjacent said bowl except for means forming a drain opening eccentric to the axis of said rst bore, and said rotary tubular element is provided with means forming a drain opening eccentric to its axis so arranged that when the said smoke aperture is in communication with said smoke Hue said drain openings are out of alignment, and upon rotation of said rotary tubular element said drain openings are brought into alignment.

References Cited in the le of this patent UNITED STATES PATENTS Re. 12,132 Willis July 21, 1903 705,988 Willis `uly 29, 1902 1,021,442 Bachman Mar. 26, 1912 1,511,603 Gaisman Oct. 14, 1924 1,710,850 Wright Apr. 30, 1929 1,907,338 Hirsch May- 2, 1933 FOREIGN PATENTS 11,546 Great Britain 1899 253,075 Switzerland Nov. 16, 1948 286,896 Great Britain MaI'. 15, 1928 380,150 France Oct. l, 1907

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