US973870A - Tobacco-pipe. - Google Patents

Description

A. E. MATSON.

TOBACCO PIPE.

APPLIOATION FILED Nov.1o. 1909.

973,870. Patented 0@t.25,1910.

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:f lff A. E. MATSON.

TOBACCO PIPE.

APPLICATION FILED NOV. 10. 1909.

Patented 0.11.25, 1910.

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Titz-.1%. 53

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A. E. MATsoN. TOBACCO PIPE.

APPLIUATION FILED NOV. 10. 1909.

973,870. 4Pawlntea 0 :i;.25,1910.'V

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kA. E. MATSON.

TOBAGGO PIPE.

APPLICATION FILED N0v.1o, 1909.

973,870'.A vPatented o@n.25,f1910.

4 SHEETS-SHEET 4.

" line'10-10fof Fig. 9;,4 Fig. 11 is a section similarfto'f'Fig. *10. showing theposition of` UNITED sTATEs PATENT OFFICE. N

ANDREW E. MATSON, 0F EUREKA, CALIFORNIA. I

ToBAcco-PIPE. A y

` Specification of Letters Patent.

Patented Oct. 25, 1910.

Application led November l10, 1909. Serial No. 527,272.

To all whom yit may concern:

Be it known that I, ANDREW E. MATSON, a citizen of the United States, residing at Eureka, in the county of Humboldt and State of California', have invented certain new and useful Improvements in Tobacco- Pipes, of whiclnthe .following is 4a specification, reference being had to the accompanying drawings.

This invention relates to certain new and useful improvements in tobacco pipes and has for its object to provide a simple and through the stem of the pipe may be ob-.

tained.

VVith'- these and other objects inl view, the invention consists of the novel construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in 'which-d -v Figure 1 is a longitudinal section, the cyl-- inder being shown lin elevation; Fig.-2 isa similar vlewwlth the cylindershown 1n section; Fig. 3 is a transverse section taken onthe line 3--3 of Fig. 1; Fig. 4 is a bottom plan view of the cylinder removed; Fig. 5 is a bottom planl view of the pipe bowl; Fig.- 6 is a vertical longitudinal section Vof aslightly modified form ofthe device; Fig. 7 is a detail perspective View of thecylinder shown in Fig. 6; Fig. 8 is a transverse section tal{en.on `tlie lline 8 8 of Fig. 7; F ig.` 9 is-a longitudinall section of another modi-` cation; Fig. 10 l=is Ca section' taken on :the

the'ycylinderto obtainfa` long circuit ofy t-lle smoke; Fig. 12 is a 'detail perspective v'ie'w of the cylinder showninFigi 9; Fig.]12a is ai* ltransverse ysection taken on'the line 1 2@l of F ig; '12;=Figs."13 land 14 are top and bottom views respectively, of a modification of y the cylinder illustrated in Fig. v12; Fig. 15

is a longitudinal section of a further modification of the device showing the cylinder in elevation; Fig. 16 is a similar view with the cylinder shown in section; Fi 17 is a (section taken on the line 17-17 o Fig. 16; Fig. 18 is a bottom plan View of the cylinder shown in Fig. 15; Fig. 19 is a detail section showing the mouthpiece disposed in spaced relation to the end of the cylinder to obtain a short draft; Fig. 20 is a front end view of the cylinder; Fig. 21 is a longitudinal section of a still further modification,

the cylinder being shown partly in e'levation; Fig. 22 is a detail perspective View of thecylinder shown in Fig. 21; Fig. 23 isa transverse section of the forward end of the cylinder; Fig. 24 is a longitudinal section of a different form of pipe illustrating still another modification; Figs. 25 and 26 are top and bottom plan views, respectively, of the cylinder shown in Fig. 24; and Fig. 27 is a front end view of the last named cylinder.

.The present invention is designed as an improvement u on the construction shown and described 1n Patent No. 933,091, led January 19, 1909, Serial No. 473,055y and issued to me September 7, 1909, and has for its object to increase thev effectiveness of the device without materially increasing the cost of production or complicating its construction. With this end in view, I provide .a pipe comprising a separable stem and bowl. The bowl 5 is provided with a depending screw threaded reduced lower end G. Thls reduced rend of the bowl has threaded engagement in an interiorly thread- `ed boss 7 integrally formed with the stem 8. This stem may be of any desired cross sectional configuration but as shown in Fig. 3 the stem is' of rectangular tubular form and is adapted to receive a similarly formed ,cylinderv 9. It will be noted that the stem 8 extends beyondiorforwardly of the bowl 5, and whenthecylinder ispositioned therein it also extends in-l advance of the tobaccol l It'y will` be observed from reference 'to'Fig 1 that the bottom surface of the bowl.,5

does not extend into the stem l 8, but is spaced f Y from lthel in'nerfA wall thereof-.iv Thisy construction-provides la chamberfflO into which f the smoke is drawn from the bowl before passing through the stem into the mouth of the smoker. The cylinder 9 is provided at each of its edges or vertices with a. groove or channel 11 which extends the entire length thereof. This cylinder slightly tapers from its rear to its forward end, such forward end being disposed iush with the end of the stein 8. Transverse connecting passages 12 communicate with the longitudinal passages at the forward end ofthe cylinder and connect thefstem whereby the smoke will be conducted from one passage to the other thus providing a circuitous draft through the pipe stem before the smoke enters the mouthpiece. Adjacent to the rear end of the cylinder a transverse connecting passage 13 connects two adjacent longitudinal channels as shown inY Fig. 4 whereby the smoke may complete its passage from end to end of the cylinder. The top of the cylinder is cut away or recessed at its rear end as shown atl-1. This recess extends substantially to the base of the channel 11 and serves to sufficiently enlarge the chain-` ber 10 to allow of the accumulation of lthe smoke therein in suicient volume. A vertical opening yor passage 15 connects the chamber 10 at the rear end of the recessed portion 14 with a central longitudinal bore 1G. A transverse passage 17 is`also provided which forms a communicating passage between the bore of the cylinder and. another of the passages 11. The latter communicating opening is located inwardly of the opening 15 and is preferably positioned centrally beneath the bowl 5.

A packin vring or washer 18 of cork or vother suitabe friction material is ldisposed in the outer end of the tubular stem 8, this portion of the stem being cylindrically formed to receive said washer. A metallic fei'rule 19 is'secured upon the ,end of the stem and is provided with interior threads to receive a nut 20. This nut is hollow to accommodate the head of an adjustable 'screw 21 which has threaded engagement through the ring 18 to position its inner end beneath the opening 15 in the cylinder. A fcrrule 22 is also secured upon the forward end of the stem 8 and is adapted to receive the squared head 23 of the mouth piece 23. Centrally 5threaded into the head 23 there is a screw stud 24 upon which a friction ring 25 is threaded. This ring is adapted to be normally engaged with the end of the stem and the cylinder 9 and closes the for-I ward ends of the cylinder passages 11. This ring also provides an air tight closure between the stem and mouth piece. The mouth piece is of course provided with the usual longitudinal bore which is disposed in alinement with yand practically forms a continuation of the central bore '1G of the cylinder.

A pluralityrof apertures 26 are formed in the bottom of the tobacco -bowl 5. As clearly shown in Fig. 5 these apertures, with the exception of the central one, communicate with an annular groove 27 in the botltom of the bowl. A radial groove 28 also extends outwardly from each of the apertures 26 to the periphery of the reduced depending portion of the bowl 5. As the smoke is drawn through these apertures into the chamber 10, the nicotin will be deposited upon the walls of these various passages and also upon the walls of the passages 11 in the cylinder which form a" circuitous channel through which the smoke is drawn. Thus by the time the smoke enters the mouth piece to be drawninto the mouth of the smoker practically all of the nicotin which is carried thereby is withdrawn and left in the stem of the pipe.

In the use of a pipe constructed in the manner above set forth, when a short draft of the smoke is desired, the screw 21 is threaded outwardly to dispose its inner end beyond the opening 15 whereby the smoke may freely enter through this opening di- ;rectly into the bore 16 of the cylinder from whence it is drawn through the mouth piece into the mouth of the smoker. When, however, it is desired to obtain the circuitous draft or passage of the smoke in the stern,

the screw 21 is adjusted into the bore of the cylinder until its inner end is located beneath and closes the opening 15. Upon reference to Fig. 2 it will be obvious that when the screw is thus adjusted the smoke will be obliged to pass into the longitudinal channel 11 in the top of the cylinder which extends from the recessed portion l5 to the outer end thereof. Upon reaching the outer end of the cylinder the smoke will pass through the transverse connecting passage 12 into the next adjacent longitudinal channel. From this point it moves rearwardly and through the transverse connecting passage 13. It again moves to the forward end of the cylinder and after passing through another of the connecting passages 12 into the adjacent longitudinal channel, it finally is drawn through the transverse opening 17 into the bore of the "cylinder and hence.

forth. By providing a tapering cylinder,

' the 'saliva and nicotin will fiow toward the outer end of the stem and be accumulated in the rear ends of the channels 11' beyond the recess 14. lBy removing the mouth piece and the friction collar 18 and nut 20, a free circulation of air will be permitted through the various passages and the stem of the pipe can. be readily blown out and cleaned. The cylinder is easily removed from the outer open end of the stem and after un-' screwmgg; and removing the tobacco bowl 5,

each of the various parts may be thoroughly cleansed as easy access isthus readily had to the'various channels or passages.

The device as above set forth defines the preferable embodiment of my invention but in Figs. 6, 7 and 8 I have illustrated a slightly modified form, wherein the radial openings or passages 15 and 17 are dispensed with and in lieu thereof the outer or smaller end of the cylinder is formed with the V- shaped passage or channel 29. The outer ends of this channel communicate with and form a continuation of the longitudinal channels 11a. It will be noted from Fig. 6 that nolongitudinal bore is provided in this form of the device as it is primarily d esigned for pipes of that character which are such size as to limit the cross sectional area of the cylinder which is carried in the stem thereof. Therefore to obtain a short circuit of the smoke in the pipe stem, the u per channel 11L ter inates in advance oft e rear end of the cy inder. AThe cylinder isformed-with a short flattened portion ad-` l yfrom the collecting chamber, isl prohibited and it is obliged 4to enter the eircuitous passage which is provided by the longitudinal channels, before it is drawn into the mouth piece. This passage of the smoke is attained in substantially the same manner as that previously described, the smoke first, however, passing through theshort transverse connecting passage 13 in the rear end of the cylinder yfrom whence it flows fors wardly into the longitudinal channel to theA .transverse connecting. passage 12 and into the next adjacent channel. ofthe smoke continuesuntil it finally-passes into the -V-'shaped end channel 29, the inner end of which is disposed in alinelnent with the bore of the mouth piece into which the smoke is finally drawn; In this form of the This movement device the packing ring 18 and adjusting screw 21 are eliminated and the outer open end of-the pipe stem is closed by the removable nut or cap 20. The forward end of the cylinder is engaged with the friction collar on the end of the mouth piece to normally closethe forward ends of the longitudinal channels 11?, but maybe adjusted in the manner before described to draw the smoke through each of the channels. Before this is possible, however, the pin 31 must be. removed from the position shown in Fig. G. lVhen the end of the vmouth piece is engaged with the stem, the smoke has a direct passage from the bowl through the upper channel of the cylinder and into the bore of the mouth piece.

In Figs. 9, 10, 11, 12 and 12a, another modification is shown. In this form the cylinder is-also designed for use in pipes haviing a comparatively small stem. As clearly shown in Fig. 12 the cylinder is formed with a plurality of spiral grooves or 'channels 11b. These channels extend the entire length of the cylinder and a short transverse passage 13"` connects two adjacent channels at the larger or outer end of the cylinder, and at the smaller end of the cylinder a transverse passage '12b connects the other passage or channel with one of those connected at the outer end of the cylinder.

From reference to Fig. 9 it will be seen that the stem extends beneath the bottom of the tobacco bowl, no collecting chamber 10 beconnecting passage 12a connects the spiral channel which is disposed immediately belowthe opening 31 in thel stem with the next adjacent channel to the right thereof. Therefore the smoke will enter these two channels before the greatfvolume thereof will be drawn into the channel which has direct communication with the opening 31. IVhen it is desired to obtain a long draft or circuit of the smoke through the stem, theclosure cap in 'theouter endA of the stem is removed andthe cylinder is rotated until it assumes the position shown in Fig.'11l where it will be noted the other of the spiralI channels which is not connected by the passage 12a is disposed in communication with the opening 31. From this point the smoke travels from thechannel to the forward end 'vention. In Fig. 10 it will be noted that the of the cylinder through the passage 13"A into the next. adjacent channel, from whence it flows to'the rear end of the cylinder' and through the passage` 12 into the direct circuit channel. The smoke is then drawn to the forward end ot' the cylinder and into the mouth piece as above described.

Figs. 13 and 14C illustrate a` slightly ditt'erent arrangement of the spiral channel, or a combination of the longitudinal and spiral channel constructions. In this form of the conducting cylinder, substantially one-halt' of the same is provided with a single spiral channel 11C which extends from the smallerend thereof and is extended atits other end longitudinallyto provide one of the communicating channels 11d forming the circuitous passage. From reference to Fig. 13 it will be noted that the top' of the longitudinally channeled portion is flattened as shown at 32. This form of the cylinder provided with the longitudinal bore 16 and an opening 33 extends through the cylinder adjacent to its rear end and communicates therewith. This opening is disposed beneath the pipe bowl and receives the smoke which is drawn through the apertures in the bottom thereof. Vhen, however, the lower end of this opening is closed by means of the adjusting screw 21, the'only outlet for the ,smoke is provided by the longitudinal channels 11i and the spiral channel 11"; The smoke enters the circuitous channel at 11e shown in Fig. 13 and fills the various longitudinal channels until it enters the single spiral channel 11 and passes to the forward end of the cylinder. ters the bore of the c linder through a vertical o ening 33 in the forward end thereof and In Figs. 15, 16, 17, 18 and 20 stil-l another modification of the device is shown. In this form the 'channeled cylinder is circular in cross section and is formed at its larger `end with a head 9. This head is adapted to be seated between the interior shoulder S of the pipe stem and the`friction ring which is disposed therein and through which the adjustable screw 21 extends. This head is rovided with a notch in which a lug 8J( lntegrally formed in the interior of the pipe stem is positioned. This lug prevents any rotative movement of the cyhnder. The up-.

per portion of the cylinder immediately beneath the pipe bowl is flattened or recessed as at 14a. An opening 15a connects the bore of the cylinder with the collecting chamber beneath the pipe bowl and is adapted to be closed by the adjusting screw as previously set forth. The cylinder is provided with the usual longitudinal channels 11* one of which terminates in advance of the recessed portion 14 and is extended downwardly lo ows int-o the bore of the mouth piece.l

the bore of the cylinder as shown at 35. Thus when it is desired to secure the longer passage of the smoke through the stem the adjusting screw is threaded inwardly to close the opening 15a when the smoke will pass through the rear transverse passage and into the various longitudinal channels L11f and finally into the central bore of the cylinder from whence it flows to the mouth piece. An end View of the cylinder is illustrated in Fig. 20 wherein it will be noted that each of the longitudinal channels 11 extends the entire length of the cylinder. By pulling the mouth piece outwardly in the 'errule as shown in Fig. 19the e'nds of' these channels may be opened to allow the smoke to pass directly from each of the channels into the mouth piece. lVith the exception of the form illustrated in Figs. 13 and 1-1 this adjustment of the mouth piece will ef'- fect the same purpose in each of the various forms of the device.

Still another modification of the device is illustrated in Figs. 21, 22 andy 23. This form of the cylinder is designed for use in connectionwith a pipe of similar construction to that shown in Fig. 9 which is not provided with a stem having its upper portion open beneath the pipe bowl. ln this form of the device the smoke passes through the opening 31b and through the various longitudinal channels 11g and the end transverse connecting channels, and is eventually discharged at the end of the circuitous passage through a transverse opening 17a into the bore of the cylinder. When the short circuit is desired the adjusting screw is threaded outwardly to open communication between the vertical opening 15b and the bore of the cylinder.

Figs. 24; to 27 inclusive illustrate a still further modification which is adapted to be employed in connection with a pipe of different form and construction to those described in connection with the previous forms. 'It will be noted from reference to Fig. 24C that the pipe bowl and stem are here lformed integral, the stem having a metallic Aferrule 12 on its outer end to receive the curved mouth piece 23a. The cylinder 9b is similarlyl provided with the longitudinal 'channels 11h and the transverse connecting jacent to the rear end of' the. cylinder with the smoke opening 31 which communicates with the tobacco bow From this point the smoke passes into the first transverse 'con' necting passage 12'. Aportiou of the smoke,

gitudinal channel' and pass through the transverse passage 13c on the opposite 'side' thereof. Thus the smoke will pass into the adjacent channels upon the opposite sides of the central channel and through the other transverse channels shown in Fig. 26. The smoke will then flow to the forward end of the cylinder and into the V-shaped channel 29a lwhich connects the ends of the longitudinal channels. From this pointthe smoke is drawn into the bore lof the mouth piece by the inhalation of the smoker. When it is desired to obtain ashort circuit of the smoke the cylinder is turned in the stem until either of the longitudinal chan-V nels which communicate with -t-he outer end of the V-shaped channel 29a are disposed in registration with the opening 31a.

From the foregoing it will -be seen that I have provided a simple and practical smokf ing pipe by means of which the smoke may be drawn 'through the mouth piece and during' its passage from the bowl of the pipe it 1s cooled andrelieved of t-he greater part of the nicotin carried thereby and ordinarily inhaled into the lungs of the smoker. The arrangement of the several elements is such that the appearance of the pipe is in no way detracted from and its efliciency is materially increased owing to the :fact that it may be readily disassembled and the various channels and passages thoroughly cleaned of the mcotin which has 4been deposited on the walls thereof.

The various forms illustrated in the drawlngs and described above are illustrative of n umerous ways in which the 'long'a-nd short clrcuits of the smoke through the pipe stem may be obtained. I also contemplate manufacturing theo linder in other forms which are not herein escribed but fairly fall with-l in the scope of the invention. It will also be obvious that the form, proportions, and minor details of construction may bea-ltered 'to adapt the device for use in connection with plpes of various types without necessarily departing from the essential features or sacrificing any of the advantages of the invention. 4 t

Having thus described the 1nvent1on,\vhat v is claimed is:

1. A tobacco pipe comprising a bowl and sitioned in the stem and extending beneath the bowl, the adjacent channels of said members being connected, and a' mouthpiece secured on the forward end of the stem, the adjustment of said member providing a long or shortcircuit of the smoke through the stem from the bowl to the mouthpiece.

2.A ltobacco pipe comprising a bowl and stem, a' removable member in said stem extending beneath the bowl provided with a circuitous passage and having a communieating passage between said circuitous passage and the tobacco chamber, a mouth piece frictionally held in engagement with the forward end of the stem, and means for directing the smoke into said passages to provide a long or short circuit through the stem to the bore of the mouth piece.

3. A tobacco pipe comprising a bowl and tubular stem, a removable member in said stem extending beneath the bowl and spaced therefrom Vand having a circuitous smoke conducting passage therein, the outer end of said stem extending beyond the bowl, a

recting the smoke into said passages to obtain a long or short circuit through the stem to the bore of they mouth piece.

4. A tobacco pipe comprising a bowl and tubular stem, a removable member in said stem having a plurality of longitudinall channels and transverse passages at its op- `posite ends, said member extending beneath the bowl, said bowl beingy provided with a plurality of apertures through the bottom thereof, a mouth piece frictionally held in engagement with the forward end of said stem, and means for directing the smoke into said channels to provide a longv or short circuit in its passage from the bowl to the bore of the mouthpiece.

5. A tobacco pipe comprising a separable bowl and stem, a removable member disposed in said stem an'd extending beneath the bowl, I said member tapering'from its rear-to its forward end and having a pluralit-y of longitudinal surface channels and transverse connecting passages at each end, the rear end of said member being spaced 'from the bottom of the bowl to provide a collecting chamber, said bowl having a plurality'of vertical apertures through the bottom thereof, a mouthpiece frictionally held in longitudinal alinement with said stem and adapted to be moved outwardly thereof,

and means for directing the smoke into cerj 'tam offsald channels to provide a long or short, circuit therefor through the stem to the bore of the mouth piece.-

6. A tobacco pipe comprising a tubular steln having a tubular boss formed adjacent to its outer end, a bowl provided with a reduced depending screw threaded extension adapted for engagement in said boss, a removable member positioned in said stem extendingbeneath the bowl in spaced relation thereto to form aV smoke collecting chamber, said member having a plurality of longitudinal surface channels and transverse connectlng passages at each end, a

mouth piecel held in frictional engagement with the forward end of said stem, and means for directing the smoke into certain of said channels to provide a long or short circuit through the stem to the bore of the mouth piece.

7. A tobacco pipe comprising a bowl and stem, a ren'iovable adjustable channeled member arranged in the stem and extending beneath the bowl, said member being longitudinally tapered to the outer end of the stem, said member having passages communicating with adjacent channels, and a mouthpiece adjustably held in longitudinal alinement with the outer end of the stem, the adjustment of said channeled member providing a long or short circuit through the stein for thc passage of the smoke from the bowl to the mouthpiece.

8. A tobacco pipe comprising a tubular stem and bowl having removable engagement therewith, said stein extending beyond the bowl, a removable member positioned in said stem extending beneath the bowl in spaced relation thereto forming a collecting chamber, said member beingprovided with a plurality of surface ,channels and a central bore, said channels being connected by transverse passages at opposite ends, the bere of said member communicating with one of said channels by a transverse passage, a ferrule secured to the forward end of said stem, a mouth piece frictionally held in said ferrule in engagement with the stem adapted to close the ends of said channels, said member. having a second passage extending vertically therethrough and connecting the bore with the collecting chamber, and means adjustably engaged in the end of said member adapted to direct the smoke into said channels and passa es to form a long or short circuit throug the stem to the bore of the mouth piece. j

9. A tobacco pipe comprising a separable bowl and stem, the bore'of said stem tapering from the bowl to its outer end, a mouthpiece frictionally held in engagement against the end of the stem and longitudinally adjustable with relation thereto, and a longitudinally tapering smoke directing member removably positioned in thestem and extending beneath the bowl, said member having. a plurality of inter-communicating longitudinal surface passages Aand adapted to be adjusted in the stem to provide a long or short circuit for the smoke from the bowl to the mouthpiece.

10. A tobacco pipe comprising a tubularv stem having a boss integrally formed therewith adjacent to one end, a bowl provided with a reduced depending portion having exterior threads for engagement in said boss, said bow-l having a plurality of Vertical api frictionally held ertures therethrough and an annular groove in the bottom surface thereof, a removable member positioned in said stem and extending beneath said bowl-fin spaced relation thereto to form a collecting chamber, the top of said member below the bowl being recessed, said member having a plurality of longitudinal channels and a central bore, the adjacent channels being connected at their opposite ends by transverse passages, a vertical communicating passage between the collecting chamber and the bore of said member, an adjusting screw having threaded engagement in the end of said member adapted to be positioned beneath said passage to close the same, said member having a transverse passage extending from one of the longitudinal channels to the bore, the closure of the first named passage being adapted to direct the smoke into the channels to provide a long circuit therethrough to the central bore, and a removable closure engaged in the outer end of said stem.

11. A tobacco pipe comprising a tubular stem and a bowl having threaded removable engagement therewith adjacent to its outer end, said bowl having a plurality of apertures through its bottom, said apertures communicating with an annular groove in the bottom thereof and a radial groove extending outwardly from each of said apertures, a removable member in'said stem extending beyond the bowl, said member havinga plurality of longitudinal channels extending its entire length and transverse passages connecting the adjacent channels at the opposite ends thereof, said member having a central longitudinal bore and a transverse opening between one of the channels and said bore, said member having a vertical opening rearwardly of the transverse opening between the bore and the collecting chamber, an adjusting screw engaged in the endotsaid member adapted to close the lower end of said opening, a removable closure for the outer end of said stem and a mouth piece in engagement with the end of the stem and member and adapted to be moved outwardly therefrom to open the ends of said channels.

12. A tobacco pipe comprising a tubular stem and bowl removably secured thereto, a removable member in said stem extending beneath the' bowl, said member having a circuitous smokel conducting surface passage and a central longitudinal bore, said member being spaced from the bottom of the bowl toform a collecting chamber, the bowl having a plurality of vertical apertures communicating therewith, said member having a vertical opening between the collecting chamberand the bore and a transverse opening in advance thereof, a friction collar disposed in the outer open end ofsaid stem, an adjusting screw carried by said collarextending into saidmember, said screw being adapted to clos'e the vertical opening, a ferrule secured on each end of said stem, a hollow closure cap threaded in the errule on the outer end of said stem, a mouth piece carrying a friction collar adapted to hold the -same in engagementl with the ^forward end of said cylinder, said mouth piece being adapted to be mo'ved outwardly in the ferrule to open direct communication between the circuitous passage and the bore thereof. 13. A tobacqo pipe comprising a separable stem and bowl, a mouthpiece adjustably held against the end of the stem, said stem having a longitudinally tapering bore, a smoke directing member having a plurality of inter-communicating surface channels and a central longitudinally extending bore,

said member having a passage therein connecting the borel with one ofthe channels, f, and means adjustable in the end of said member to open or close said connecting passage whereby a long or short circuit for the smoke from the bowl to the mouthpiece is provided. V

`14:. A tobacco pipe comprising. a separable bowl and stem, a smoke directing member '30 removably arranged'in the 'stemand adjustable therein, 'said -member. eiztending beneath the bowl in spaced relation thereto and having a plurality of longitudinally eX- tending surface passages and a central bore,

and means adjustably engaging with said member to cause the smoketo iow through the passages or permit the same to enter the bore whereby a long or sh'rt circuit is provided froin' the bowl to the mouthpiece.

15. A tobacco pipe comprisinga bowl and 40 stem, said stem having its bore longitudinally tapered from the bowl to its outer end, a mouthpiece' frictionally held against the end of the stem and adjustable with relation thereto, "the other end of said stem eXtending beneath the bowl and being open, a longitudinally tapered channeled member arr'ange'd in the stem and extending beneath the bowl, said member being adapted to provide a circuitous passage for the smoke from 5()

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