US2416075A - Combination stovepipe tall-fitting and closure - Google Patents

Description

Feb. 18, 1947. w l s N 2,416,075

COMBINATION STOVE PIPE T-FIYT'IINGY AND CLOSURE Filed June 27, 1944 Fig.5

Patented Feb. 18, 1947 f UNITED STATES PATENT OFFICE COMBINATION STOVEPIPE T-FI'ITING AND CLOSURE Louis K. Weinstein, Bronx, N. Y.

Application June 27, 1944, Serial No. 542,407

3 Claims.

face preferably without necessitating any change a stove pipe or the like, especially at the pocket adjacent to the cleanout plug or closure.

Another object of the invention is the provision of a device of the type mentioned having a projection or handle whereby the. curved surface portion is not only placed in proper position but also tensioned in an angular manner to aiford a relatively tight or a securely locked wall or closure.

Another object of the invention is the provision of a device of the class alluded to having improved means whereby an element is movably disposed in a T-fitting to change it into an elbow fitting.

Another object of the invention is to furnish a device of the nature described having improved means whereby the main curved wall portion of an elbow is so arranged as to constitute a cleaning or scraping element for at least part of the element and the conduit therebeyond.

Another object of the invention is to construct a device of the character described having improved means including a stream lining curved element removably positioned at the inner angle or relatively sharp apex of an elbow to reduce eddying of the fluid therein and to permit unobstructed cleaning of the elbow when necessary; a supplemental object is to associate such element with any closure, curved wall, or scraper element for a T-fitting whereby the elements may perform their individual functions without interference with each other, or whereby the elements may conjointly function in stationaryor in moving condition or both to thus realize their intended functions in a highly efiicient manner.

Other objects and advantages of the invention will become apparent as the specification proceeds.

With the aforesaid objects in view, the invention comprises the novel features, combinations and arrangements of parts hereinafter described iii) 2 in their preferred embodiments, pointed out in the subjoined claims, and illustrated in the annexed drawing, wherein like parts are designated by the same reference characters throughout the several views.

In the drawing:

Figure 1 is a fragmentary view in vertical section showing a conduit or stove pipe embodying the invention.

Fig. 2 is a view in elevation looking at of Fi 1.

Fig. 3 is a plan view of a blank for the curved wall element of Fig. 1.

the left Fig. 4 is a view similar to that of Fig. 1, showing a modification according to the invention.

Fig. 5 is an end view of Fig. 4.

The advantages of the invention as here outlined are best realized when all of its features and instrumentalities are combined but, useful embodiments may be produced involving less than the whole.

It will be obvious to those skilled in the art to which the invention appertains, that the same may be incorporated in several different constructions. The accompanying drawing, therefore, is submitted merely as showing a preferred exemplification of the invention.

Referring in detail to the drawing, ill denotes a device embodying the invention. The same may be denoted a conduit, or an elbow or T-fitting,

the fitting ll having at least its vertical arm I2 and one of its horizontal arms l3 sufiiciently elongated to form straight pipe portions, another of the horizontal arms l4 being a relatively short arm which is provided for the closure. When used as a stove pipe, the arm I2 is connected to a stove and the arm II to the flue. In the exemplification shown, the structure is made ofsheet metal, the arm l2 being suitably joined into the horizontal section along a line l5.

I-Ieretofore, the branch M has been generally closed by a plug-like removable element to facilitate cleaning. In a stove pipe, the relatively sharp apex as at l6 and the pocket i'l afforded by the branch l4 constituted about the worst possible flow condition, producing a great deal of eddying of the gases, and resulting in a settling out of soot which deposited in the pocket I! and in the branch It. It will be perceived that the stream of gases from branch i2 hurled itself at least in part against the opposing top wall of the device I 0 producing many eddy currents in different direc-.- tions, the effect of such eddies being the same as though the dvice I!) were constricted at the elbow. ,While means have been devised heretofore to facilitate cleaning of the device I I), no means to my knowledge has been discovered heretofore to get at the root of the difiiculty by reducing the eddy currents and the deposit of soot, in order to place less dependence on cleaning which is often overlooked or forgotten. To produce a properly curved sheet metal T-fitting is expensive, and even so the pocket as at H remained. By the present invention, a new and novel adjunct i8 is provided for the conduit, which is about as cheap and may be even cheaper than the ordinary plug-like closure, while performing the several additional functions herein described.

That adjunct comprises a curved wall I9, which may have a supporting foot or extension 20, the wall being constructed of an ovoid blank such as shown at El. This blank need not be concaved into dish shaped form but may be. curved only about its shorter axis, to produce the wall I9 tos-nugly fit in the conduit-at an angle of about i-idegrees, the extension 22- of the blank being out for bending on a straight line, or being bent on a curved line 23 as with a die, to produce the support 29. The latter assures that the wall is will not tend to drop into the branch I2. Secured to th wall It as by being spot welded or riveted thereto is a projection or handle 24 in the branch It, the handle having a hand grip portion 25 1ocated above the bottom of the branch I i, whereby the element 24 is a cantilever weighted at its outer end to tend to tiltthe'wall if clockwise into tight engagement with the interior surfaceof theconduit. A more positive pressure for this purpose may be obtained by extending the portion 25 upward into contact with the top wall of the branch It, as at the portion 26, whereby the arm or handle 24 exerts a definite pressure tending to turn thewall I9 clockwise to snugly and frictionally engage the conduit wall. Since the interior of the conduit is under suction due to chimney draft, a slight leakage is immaterial, yet with oil burners, for instance, a momentary pressure occurs, due to the explosive burning of the fuel especially at the instant of ignition, audit is not desirable that soot particles be blown out of the conduit. The frictional securement between the conduit or wall of the T-iitting at I9 and at 26will prevent longitudinal shifting of the wall due to. momentary gaseous pressure. While the portion 26 could be secured to a wall of the fitting as by a bolt or screw, in order to provide a minimum of manipulation it is preferred to use merely a stopor indicator to limit insertion of the wall Isfor precise alinee ment with the branch 52. Thus a screw may be removably connected in the portion 26 with. its head adapted to abut an edge 23 of the conduit or branch I4.

If desired the device I8 maybe used to clean the conduit or fitting at the section I3. For this purpose the screw 27 may be removed, the handle ripped at 25, and then the wall I9may be further inserted and rotated to scrape off and clean out soot. The wall It may be usedas a scoop to collect soot, and hence may have a long slope, and maybe further elongated at its leading edge 23. r In Figs; 4 and is shown a modified device 3f! according to the invention, the same being in all. respects like-the device It except as described; Associated'with the wall 3I is a curved,

' its-inner angle orapex I6; hence the wall 3| hasa shorter radius of curvature than the wall. I9,

4. the center being at I 6. This portion 32 is curved at 33 into register with the adjacent wall of the branch I2, and slopes forward and downward at 33 like a Venturi wall. The portion 32 may also be curved about the axis of branch I3, but sufiicinet benefit is obtained by making it like a chord as in Fig. 5. This portion 32 is rigidly connected to the wall 3! by any suitable means, positioned to effect little disturbance of the flowing gases, and it may consist in a rod 35, which, although centrally located, is quite thin. This rod may form an integral extension of the handle 36, if desired, with spot welding at the wall 3| and riveting or spot welding at the portion 32. Accordingly, the elements 3 I, 32 are slidable as a unit by manipulation of the handle'36. Instead of the screw 27, a device like a wingnut 3'! may be rotatably riveted to the handle portion 38 at 39. This nut or head 31 may have an eccentric portion is rotatable intoa position as in Fig. 4 to about an edge of branch I4, or into a position inv which it clears said edge so that the device 33 may be slid in and out without obstruction, to scrape out soot. As in the. device I9, the wall 3! may be sufiiciently elongated at its leading edgeto form a scoop for the soot. In tending to tilt the wall 3'! clockwise, the position of the element 32 need not be affected because such tilting movement may be extremely small or quite insignificant. If preferred, both of the members 35 and 36 may be resilient for effectuating their intended purposes and the edge 41 of the element 32 may be regarded as beveled to facilitate its sliding past the edge It, or the latter may be beveled for that purpose.

I claim:

1. A combination chimney elbow and closure including a T-fitting the three branches of which are at right angles to each other, a sheet metal closure wall member in one of two ali'ned branches confronting the third branch, the wall member being suiiiciently thin so that its edge remote from the third branch constitutes a scraper, said wall member being inclined to confront the third branch, said wall member having a normalposition in which it constitutes a deflector, said wall member b-einglineally slidable along the fitting and rotatable to scrape clean adjacent portions of the fitting, and a rod connected to the wall member generally centrally thereof and lying in the branch. containing the wall member, said rod having a laterally bent portion constituting a handle for moving the wall member, the handle having an end section slidably engaging an inner surface of the fitting whereby the. wall member is maintained in said inclined position.

2, A combination chimney elbow and closure,

accordingto claim .5. wherein a stop portion is mounted on said end section. of the handle. for releasably engaging arr end of the branch containing the handle to. thus set the wall member in said normalposition.

3. A combination chimney elbow and closure including a T-fitting having a main horizontal passage and a secondary vertical passage at right angles thereto, a movable wall deflector and closure member in the horizontal: passage disposed'in a branch of the fitting sloping to confront the secondary passage to stream-line the. fitting, said wall member being lineally slid.- able along the main passage past the secondary passage to scrape clean the portion of the fitting into which the secondary passage discharges the furnace exhaust, said wall having; a handle portion sufficiently elongated for corresponding movement into the main passage, and an eccentric element rotatably mounted on the handle portion for movement to laterally engage and disengage the first mentioned branch to respectively set the wall member in confronting relation to the secondary passage and to move with the handle portion into the main passage as the wall member moves past the secondary passage.

LOUIS K. WEINSTEIN.

REFERENCES CITED The following references are of record in the file of this patent: V

UNITED STATES PATENT Number Name Date 399,747 Edwards Mar. 19, 1889 984,188 Brown Feb. 14, 1911 10 1,108,918 Lob Sept. 1, 1914 1,528,252 House Mar. 3, 1925

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