US1940075A

US1940075A - Smoking pipe

Info

Publication number: US1940075A
Application number: US429874A
Authority: US
Inventors: Caldwell Edwin
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-02-20
Filing date: 1930-02-20
Publication date: 1933-12-19
Anticipated expiration: 1950-12-19

Description

E. CALDWELL Dec. 19, 1933.

SMOKING PIPE Filed Feb. 20. 1930 able.

Patented Dec. 19, 1933 UNITED STATES PATENT OFFICE 'This invention relates to an improved smoking pipe and has for its principal object to provide a plpeof such construction as will insure the delivery of smoke having` properties insuring a better taste than has heretofore been obtainpresent in both solid and liquid form. Coolness' of the smoke is'obtained in the improved construction in two Ways, namely, by permitting Y radiation of heat units from the smoke during its travel and by adding to the smoke stream av controlled amount of air.

In accordance with the invention there is provided a tube of improved'construction by which the -smoke is necessarily purified in its travel from the bowl to the mouth piece. lThis tube is disposed in the bore of the pipe and is so designed in relation thereto as to insure the desired interaction. The travel of the smoke through this tube is along a path not provided heretofore in pipe structure in that the smoke received directly from the bowl emergesfrom the tube at a point Vrelatively remote from'the bowl and after passing through the chamber within the boreY of the pipe reenters the tube at a point relatively near the bowl for a' travel rearwardly into the mouth piece. It is largely by means of the relationship of passages and ports in the improved tube that the removal of objectionable constituents ofthe smoke is brought about before it is delivered to the mouth piece.

A further object of the invention is to provide in a pipe structure* an opening by which air may be directly introduced into the smoke stream for cooling and dilutingmit. v In thepreferred embodiment of this feature the air port is controllable in size so that the quantity of air thus admitted can be conveniently regulated using relatively movable parts of the pipe to constitute a valve.V In accomplishing this Vpurpose it is preferred that the air opening shall extend throughl the pipe stem and the mouth piece `so,

- inviting this in order that taste variations in The physical characteristics of smoke the smoke can be accomplished by the smoker to suit his whim.

A further object of the inventionvis toprovide an improved tube for the purposes set forth which shall be simpleY and inexpensive in structure andV lend itself conveniently to assembly and attachment Within theV mouth piece, its free end being of a character to cooperate with the Y inner end of the pipe bore `to seal the chamber'.

within the bore against direct admission of smoke thereinto. t

Still another object of the invention is to conjstruct the improved tube in such form that baiiles will be provided at such points as insure most eiective action in accomplishing the objects and yet shall be of such a nature as not to interfere with the most convenient cleaning of the tube passages and the mouth piece. n Still another object ofthe invention is to provide indicia on the pipe by means of which the smoker can determine the relativeV extent Yopening of the air valve, such indicia inone form, forinstance, appearing as a Vernier scale on the mouth piece adjacent to the tenon.

Another object of the invention is to improve the construction of the mouth piece at its tip by making it sectional and of metal or moulded composition for engagement with the mouth piece.` f

These and other objects of the invention will appear at greater length hereinafter in connec-v tion with the detailed kdescription of the` preferred embodiment shown in the accompanying drawing,'in which: y y

Figurel is a view in side elevation of the im proved pipe, parts being broken away to showthe improved tube and its relation to the bowl and bore of the pipe stem in normal condition.

Figure 9 is a sectional view of the tip of the mouth piecetaken on the plane indicated by the line 9 9 of Figure 1 and looking in the direction .of the arrows.

The` improved pipe comprises a bowl a having a stem b and a mouth piece c joined detachably with the stem through the tenon c in accordance with usual practice. The smoke from the burning tobacco within the bowl a is drawn through Y improved Vtube indicated generally at d and to be later described, this tube being of lesser diameter than the chamber Z2 and adapted to engage the end wall b2 of the chamber to prevent smoke from the passage o' entering directly into the chamber. A convenient and effective relationship to accomplish this purpose is illustrated in Figure 2 wherein the end of the chamber b is shown as countersunk as at b3 to receive snugly the end of the tube d, the dimensions of the parts being such as to insure contact sulicient to prevent smoke in any appreciable quantity passing from the passage a directly into the chamber b1. As a matter ofV fact the tarry distillates from the burning smoke will assist in creating an effective smoke seal at this point. v

Having now described the general relationship of parts emphasis will be placedon the details of the improvedtube by which the noxious liquids and solids within the smoke are extracted therefrom to the greatest possible extent When'it emerges through the opening a and before it enters the mouth piece c. The tube d is themedium by which this purification of the smoke is attained. It will be understood as the description of the tube `is given that the desired result might be obtained by tubes of other constructions butnevertheless the form of tube illustrated is believed to possess many advantages from the standpoint ofV manufacture and assembly. Whatre-entry of the smoke stream into the tube at av point relatively nearer to the pipe bowl and contrariwise, relatively more remote from the mouth piece. A tube which provides such a path o1' travel'for 'the smoke stream is by no means a simple one to manufactureand assemble considering that not only must bailles be incorporated therein but easy cleaning must be assured. It may be doubted whether a satisfactory tube answering the requirements could be formed commercially from a single piece of metal and for that reason the provision of a'sectional tube is thought to have considerable merit and novelty.

Referring to Figures l and 8 it will be seen that the tube d is provided with openings d and d2 in its wall, these openings being 180 apart and spaced unequal distances from the ends of the tube. It is` desired to bring about the passage of smoke sothat it will emerge from the opening d and re-enter the tube through the opening d2.

, This means, of course, that the interior of the tube may be of such construction that no communication between these two openings is afforded interiorly. A core piece e is illustrated in Figure 8 which is of such constructionthat it may beintroduced in to the tube d and be permanently -united therewith so that distinct and separate passages withinthe tube d are constituted in the desired relationship. The core e which is solid is of the same diameter as the interior of the tube b so as to lit snugly therewithin and yet considered as a solid rod it has sections cutout to constitute, with the interior wall of the tube d the necessary channels. For instance, on one side of the core e there is provided a flat wall forming with the upper portion of the wall of the tube d a channel f which terminates in the opening d. lAn angular face e on this part of the core e constitutes a baille terminating in and coinciding with the edge of the openingd as appears clearly from Figure 2. The underside of the core e, but at a point remote from its end, is formed somewhat the converse of the part described above so that when the core is introduced snugly into the tube d a second channel g' will be provided communicating with the other opening d2. This channel g terminates in an extended central bore e2 within a tubular extension e3 of the core e, as appears clearly from Figures 2 and 8. This tubular extension e3 is preferably serrated as at e4 and of such diameter as to permit it to be driven into the counterbore of the mouth piece c and thereby permanently united therewith. In the same manner it has been sought to make clear the core e is permanently united with the tube d through a drive t. Thus the tube d considered as a unit with its interior channels f and g formed askdescribed is permanently united with the mouth piece and adapted for introduction into the chamber D and removal therefrom with the mouth piece as its tenon c is engaged or disengaged from the stem b. y v

Thus far considerable emphasis has been placed on the structure of the tube d as viewed from the standpoint of simplicity and ease in manufacture and assembly. A description will now be given of its mode of functioning in bringing out theA separation out of the noxious matter in the smoke. As explained before, the end of the tube b brings about a seal at the inner end of the chamber b so that the smoke cannot enter the chamber directly from the port a.

Accordingly, the smoke must rst pass through the channel f until it escapes into the chamber b through the opening d in the tube, the barile e serving to assist in deflection of the smoke from a straight path radially outward and against the wall of the chamber b as appears clearly from Figures 2 and 5. This abrupt change in direction of the smoke coupled with its deilection radially and engagement with the wall of the chamber b brings aboutan immediate deposition of liquid and solid noxious matter from the smoke. The smoke expands into the larger chamber b and creeps along its supercially extended and relatively cool wall with the result that the greatest possible separation out of noxious material is accomplished. In order to get to the mouth piece smoke has to re-enter the tube through the opening d2. This opening, as pointed out before, being relatively nearer to the bowl of the pipe than the opening d', the smoke must completely reverse its direction of travel after emerging into the chamber yb and move along the walls of the chamber and trav- From the opening d2 the reason of the improved tube construction, enter theV mouth piece c since their relation to the channel g Within the tube precludes this. They are thrown downwardly effectively from the smoke by reason of its path of travel as ex- ,plained. Thus 'at thispoint purification of the smoke is accomplished and great improvement in its taste assured since the taste is largely dependent on the purity of the smoke. In accomplishing this purification it will be understood that cooling of thevsmoke by conduction is also a necessary incident, the extended wall of the chamber b' and the extended surfaces of the channels along which the smoke must pass insuring this amount of cooling before the smoke goes into the mouth piece. However, the present invention contemplates an additional and direct cooling of the smoke and its dilution of oxygenation by the introduction of air into the smoke stream at a point after its cleansing. Such cooling will also contribute to a pleasant taste since the coolerthe smoke is the more agreeable the taste although, of course, there isV a point beyond Which dilution of the smoke should not be carried. To suit the taste of the individual, therefore, it preferred that the airv added may be admitted in a quantity Within the control of the smoker. In the illustrated embodiment this is done by simple means taking advantage -of the normal relationship between the mouth piece and the pipe steam. As shown in Figures 2 and 6 an opening b4 is provided at some point in the pipe stem overlying the tenon c'. It is believed that the top of the pipe stein will prove to be a desirable place to locate the opening b4 since in this location the pipe juice Within the chamber b' cannot accidentally leak through the opening b4 and also this location enables the finger of the smoker to be most conveniently placed over the hole, if desired, for taste experiments to suit his whim. The tenori c' is provided with an opening c2 which is preferably the same dimension and cross sectional form as the opening b4 and forms a continuation thereof and the tube e3 has a similar opening e5 so Vthat air may enter from the outside into the smoke stream flowing through the bore e2. For the convenience of the smoker as shown in Figure l parts of an arrow may be placed on the sternb and the mouthpiece c so that when the parts are in alignment the openings c2 and b4 Will be in complete registry for the admission of kthe maximum quantity of air. Graduations indicated at c3 may be formed on the mouth piecec at opposite sides of the median line shown as part of the arrow so that by rotating the mouth piece c to one side or the other of the median position the opening c2 can be offset from the opening b4 to a desired extent to restrict the iniiow of air. The smoker will, of course, determine the quantity of air which creates a blend of smoke most agreeable to his taste and he may, indeed, find that his taste is served at different times of the day or on different daysV by a change in the quantity of air with a'resulting change in the blend. The point is that taste can be catered to in this fashion by means wholly Within the control of the smoker. In the same manner it Will be evident that the smokers finger may be placed over the openingV b4 if he desires momentarily to restrict the infiow of air. To facilitate this the opening b4 may be countersunk as indicated at b5 to assist in locating the opening.

The passages f and g within the tube d, it will be observed, are so related to the openings that the greatest convenience is afforded in cleaning them as by the inroduction of a pipe cleaner. Thus, a pipe cleaner may be run through the bore of the mouth piece c and guided without restriction through the channel g emerging at the opening d2. Similarly, a pipe cleaner may be inserted through the passage ,f without hindrance by introducing either through the opening d' or at the inlet end.

The result of the provisions herein described is that a dry smokeV exceedingly clean may be further cooled and diluted or blended or oxygenated to any desired extent by the direct addition of air thereinto in its travel through the mouthpiece.

A further feature of construction resides, as a detail, in the inclusion in the mouth piece of a tip h of metal or moulded composition united with the mouth piece c by any convenient means facilitating this. This tip may be of such material as to resist injury from the teeth or may permit replacement when and if injured.

The invention is not to be limited to details of construction except insofar as recited in the appended claims.

What I claim is:

1. A tube of the character specified comprising a cylinder having openings through its Walls and a core secured within said cylinder and so formed as to constitute independent smoke passages interiorly of the cylinder communicating with the respective openings therein.

2. A tube of the character specified comprising a cylinder having openings through its walls and a core secured within said cylinder and so formed as to constitute independent smoke passages interiorly of the cylinder communicatingr With the respective openings therein, said core having inclined surfaces along said passageways to constitute baffles for the smoke.

3. A` tube of the character specied comprising a cylinder having openings. through its walls and a core secured Within said cylinder and so formed as to constitute independent smoke passages interiorly of the cylinder communicating with therespective openings therein,` said core terminating in a tubular extension secured within the mouth piece.

4. In a pipe having a stem and a mouth piece eneageable therewith registering openings through the stem and mouth piece to admit air into the smoke stream, said openings being relatively displaceable by angular movement of the mouth piece in the stem, indicia carried on the stem and mouth piece to indicate visually the extent of the relative angular displacement therebetween.

EDWIN CALDWELL.A