US2206188A - Smoking pipe - Google Patents

Description

E. A. HERR SIIOKING PIPE July 2, 1940.

Qrigina'l Filed Aug. l1, 1937 III.-

I `Patented July 2, 1940 c Nc 2,206,188

PATENT OFFICE `Edward A. nerr, Philadelphia, Pa.

Application August 11, 1937, serlalfnaissos Renewed May,14,`1940 i 1 2 Claims. (Cl. 13b-194) invention relates to smoking pipes, and

has for an important object thereof the provision ofadry pipe, that is to say,a pipefwherein the lower portion of; the bowl will remain dry and, accordingly, a pipe in which a clean cool smoke 1 can be `enjoyed to the full extent of the normal chargaand is a continuation in part of `myprior "application Serial N o. 118,128, led December `12,9, `1`936,` for` fsmoking pipe. Wlllany `attempts have been made `to produce a "pipeof this charactenbut these attempts have `ffailetldlle to` ,theV factfthat certain conditions always` present in a smoking pipe have `either `been overlooked or ignored. Saliva enters the :stern of a smokingpipe through the `bit thereof due, principally, tothe fact` that there is` in- ,voluntary and unnoted respiration into the bit ,which forces the secretion along the bore of the bit and finally` from` the end thereof. If this `seeretici-1 collects against the upper wall of the `borep as` it `readily does `due tothe fact thatit 1 `frequently bubbles from the `end of the blt, it will `creep along this wall and reach the `conduit to the bowl `withoutregard. as to Whether this` coni "duit be disposed at such upper wall or not.

Furthermore, such respirations are often of sufficientforce to cause thesecretions to be carried bodily `to the orifice and passtherethrough,

Provision of collection cavities or4 absorption means are of little avail unless `these two factors are taken into consideraticn. A common form of "trapping device consists of a bulbous tip for the bit having minute openings therein and, obviously, such" openings invite capillary movement `of the liquid to the outer surface of thebulb l where feven a relatively `slight respiration would tendto blowthe same against the upper wall `of `the stem duct. Q

An important object of this invention isthe provision of a `constructionsuch, that engage" ment of the saliva with the upper wall of the duct is, to thegreatest possible extent, eliminated so that a` conduit communicating with suchupper `wall may be disposed out of the, general `path thereof, and to further construct thepipelso tha-,teven a sharp respiration cannot drive ,the liquid particles, which under such.,` respiration normally tend to spray, to a position adjacent the mouth of such conduit. While-these`precautions will `substantially entirely eliminate bowl moisture in the pipe, I havefound'that even they will `not sufce to keep the bowl completely dry since a certain amount of moisture through bubbling` of the viscous saliva at the bit inlet comes in contact with the walls of the i which i i y Fig. 1 comprises aside elevation, partially in section, of a smoking pipe-constructed in` accordl stern and, creeping along the walls,` nally varrives` at the opening of the duct and is nally Rejected through the duct ofthe bowl.1 A further object of the inventionis, accordingly, the elimination of the possibility of this type of transfer of fluid to `the bowl.

These and other objects I attain by the construction shown in the accompanying drawing in ance with my invention; l y `liigs.12 and 3 show various modifications of the `duct mounting inthe stem; and

Fig. 4 is an enlarged Viewof a portion of Fig. l.

`Referring now more particularly tothe drawing, the numeral IIJ generallydesignates the bowl of a pipe which is provided with a stem II differing from the usual stem. `in `that the cavity thereof is both longergand of `considerably greater diameter'than such cavities usually are, being preferably in the form of a straight bore of a size at its` outerend to take the neck I2 of the bit I3. l I

, A downwardly and inwardly inclining opening port `I4 is formed throughthe wall of the bowl immediately `above the upper surface of the stem I I and adjacent thereto, and at the approximate center of the upper surface of the stem an opening I5 is formed. A small conduit I6, bent ill insubstantial L-shape, has its inner end engaged in the port I4 and its cuter end engaged in the opening I5, this conduit' being preferably of relatively. small bore,` and so constructed that it may be readily removed for cleaning.

`The bit neck I2, which, as previously stated, closely litsthe wall of the conduit, has a ccnsiderably reduced, centrally disposed extension Il through which the inner end of the bit bore I8 opens centrally. The reduction in size of the eX- tensionl'l is such that a very considerable space I9 `is provided between the wall` of the stem cavity 20 and the outer wall of the extension in order that globules of moisture somewhat inflated by a respiration may, as a general rule, not come in` contact with the upper wall and so form` a capillary'4 bridge permitting fluid to pass along the upper wall of the `pipe and so to the opening I5, The inner end of `this extension is suiiiciently spaced from the opening `I5 thatthe moisture in the air will tend to separate and fall tothe bottom .ofthe cavityy20before reaching the opening, thus avoiding a moist area inthe vicinity of this opening. This tendency `of the `moisture in the air to separate is materially increased by reason of the fact that the opening I is disposed well away from the blind inner end of the cavity 20, providing a dead air space 2| of considerable volume which forms a cushion against the inrushing jet checking the velocity of the same and increasing its tendency to expand in the relatively more highly heatedA chamber formed by the cavity and thus permit separation of its liquid content. The size of this dead air space further insures a collection bowl for liquids moving along the lower wall of the bore which is well spaced from the point of communication with the bowl and thus insures against creeping of the moisture to the conduit i6 along which, due to the size of the bore, itfwould readily move by capillary attraction.

posals results in relatively rapid collection of moisture in the pipe bowl.

As hereinbefore noted, there is a tendency of bubble-transmitted iiuid to creepalong the upper wall of the cavity 29 and in order toprevent this moisture from passing through the tube I6, I provide an enlarged opening at the mouth of the tube across which the fluid will not bridge and obstruct the passage so that it will be blown into the same. This may be accomplished by employing a tube of normal size, as'shown in Figs. l, 2 and 4, and terminating the end of the tube proper in spaced relation to the inner wall of the stem i l. YSince the slight grip of the tube in the wood of the stem would tend to cause rapid enlargement of the opening, the'tube is continued by providing in the opening a thin extension of the tube which will vremain permanently in position forming a bushing 22 which will not only prevent damage to the stem of the pipe butwill provide asmooth wallV up which the fluids will not tend to move. The tendency of fluids to collect about thev mouth ofthe tube may bev likewise prevented by the extension of the tube into the bore for a short distance, as illustrated `at 23 in Fig.` 3 and at 23a in Figs. l and 4.. The same result can be accomplished by employing a relatively large tube i641 having a thick wall and enlarging the bore of the wall at the mouth as indicated at 24. The wall of the enlarged bore at its mouth may be bevelled as at 25 to produce a knife edge which will likewise serve to inhibit the collection of moisture. n

It will be noted that in each instance there is, in eifect, an enlarged continuation of the bore of the tube, the bushings 22 providingv this in the one instance and the actual enlargement v24 providing it in the construction shown in Fig. 3.

Since the constructions illustrated are capable of some modication Without departing from the spirit of my invention, I do not wish to be understood as limiting myself thereto except as hereinafter claimed.

I claim: 1. A smoking pipe comprising a bowl having a stem provided with a cavity, a bit having a neck fitting the outer end of the cavity and provided with a considerably reduced centrally disposed extension through which the inner end of the bore of the bit opens, said cavity being relatively large in diameter as compared to said extension and said cavity having a blind inner end, the cavity further having an opening in the upper wall thereof, a bushing engaged in said opening at a point disposed substantially midway between the inner end of the cavity and the inner end of the yextension yof the bit, said bushing having an enlarged upper end limiting its movement into the cavity and having its inner end extending partially into the cavity, a removable tube communieating at one end with the lower end of the bowl and at its opposite end engaged in the bushing,

the bore of said tube being considerably less than that of the bushing and the inner end of the tube being disposed outwardly of the inner end of the bushing, the extension of said bit being suiciently spaced from the walls of the cavity to prevent globules of moisture passing therefrom from normally engaging the cavity wall or being blown against or otherwise engaging the upper portion of the cavity wall,r and being further suiiiciently spaced from the inlet ofthe tube to the cavity to permit respiration-borne moisture to separate and flow to the bottoml of the l cavity, the inner end of the cavity being considerably spacedvfrom the point of communication of the conduit with the cavity vwhereby to provide a relatively large dead air space beyond the tube from the bit.

2. A smoking pipe comprising a bowl having a stem provided with a cavity, a bit having a neck fitting the outer end of the cavity and provided with a considerably reduced centrally disposed extension through which the inner end of the bore of the bit opens, said cavity being relatively large in diameter as compared to said extension and said cavity having a blind inner end, the

cavity further having anropening in the upper wall thereof, a bushing engaged in said opening at a point disposed substantially midway between the inner end of the cavity and the inner end of the extension of the bit, said bushing being so constructed and arranged as to limit its movement into the cavity and having its inner end extending partially into the cavity, a removable tube communicating at one end with the `lower' end of the bowl and at its opposite end engaged in the bushing, the bore of said tube being considerably less than that of the bushing and the inner end of the tube being disposed outwardly of the innerend of the bushing, the extension of said bit lbeing suiciently spaced from the walls of the cavity to prevent globules of moisture passing therefrom from normally engaging EDWARD A. HERR.

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