US1313633A - Stovepipe - Google Patents

Description

J. L. HEMP.

STOVEPIPE. APPLICATION FILED mAYn. 1915.

Patented Aug. 19, 1919.

\NVENTOR WH'NESSES JOSEPH ATT'YS.

citizen of the United UNITED STATES JOSEPH L. HEMP, OF ST. LOUIS, MISSOURI.

STOVEIIPE.

To all whom it may concern:

Be it known that I JOSEPH L. HEMP, a gtates, and resident of St. Louis, Missouri, have invented certain new and useful Improvements in Stovepipes, of which the following is a specification containing a full, clear, and exact description, reference being bad to the accompanying drawings, forming a part hereof.

My invention relates to improvements in stove pipes, and the object of my invention is to construct a simple, inexpensive and easily operated stove pipe seam, which may moved, of a stove pipe section constructed be locked without the employment of ex traneous means. I

With'the above object in view, 1ny'inven tion consists in certain details of construction and arrangement of parts hereinafter fully described pointed out in my claims and illustrated by the accompanying drawings, in which 1 Figure 1 is an elevation, with a part reaccording to my invention;

Fig. 21s a fragmental cross section taken on the llne 2-2 of Flg. 1 look ng toward the right; and

Fig. 3 is a view similar to Fig.2, taken on the line '33 of Fig. 1 looking toward the right; and Fig. 4 is'a detail longitudinal sectional elevation showing the crimped end bent inwardly. Fig. 5 is a perspective view of my stove pipe section illustrating the preliminary method or manner of locking the edges of the Stovepipe together, and

Fig. '6 is a fragmental perspective of one end of the stove pipe section illustrating the subsequent operation in looking the edges wherein one flanged edge 'is partially inserted through the nortch formed in the opposing edge.

Referring ing drawings,

5 designates the stove pipe section formed from a single sheet of metal. Formed on one margin of the sheet there is an outwardly bent flange 6, which extends throughout the stove pipe section, and formed on the opposite edge of the sheet there. is an inwardly bent flange 7 said flanges being adapted to be engaged or interhooked, as is common.

The pipe section bears the usual beads 8 near its ends for the purpose of limiting the extent of telescoping of sections of pipe and at the one end the sheet is longitudiby numerals to the accompany- Specification of Letters Patent. Patented Aug. 19, 1919.

Application filed May 17, 1915. Serial No. 28,620; i

n'ally crimped to slightly taper the pipe to facilitate the telescoping.

e In the margin of the sheet intersecting the flange'o, between the bead 8 and the end of the sheet which is longitudinallyv The crimped, there is formed'a notch 9. notch 9 answers as aseat for the opposing flanged edge 6" of the stove pipe section, said At the end of'the sheet opposite the longitudinal crimps' and notch 99, parallel with and laterally spacedfrom the flange. 6 is a shoulder 10, which israised tothe plane of the overlying portion of the flange to pro duce an abutment'against which the opposite flange bears to prevent sectional relative movements of the flanges.

It will be understood. from this showing that along one margin the stove pipe section has an inwardly benxtflangf'? of hook format 10n which extends from one end of the section to the 'notch 9, said flange terminating at the notch. Beyond the notch a portion.

of the stove pipe section (as shown by dotted'llne in Fig; 1) projects when the pipe section is locked beneath the opposing flanged edge of the stove pipe section. The opposing or opposite edge of the stove pipe section is provided with an outwardlybent flange 6 which extends throughout the-section, the said flanges 6 and 7 adapted to be hooked to gether for locking the stove pipe section; Onthe end of the Stovepipe section opposite to the end in which the notch 9 is formed, I 'form a shoulder 10,'against which the opposing edge of the stove pipe is adapted to, abut whenthe' fianges are hooked "or 'placed in the locked position. In order to lock the stove pipe section together, the stove pipe section is twisted until the end of the side carrying the flange 7 passes the shoulder 10, then the flanges are hooked together, one edge of the stove'pipe section resting against the shoulder 10 and the edge of the section carrying the flange 6 being inserted over the portion of the pipe beyond the notch 9. 'When the stove pipe section has been assembled, one end is prevented from collapsing by means of one edge of the section resting in the notch 9 and the other end is prevented from collapsing by been locked- PATENT, [OFFICE- one edge resting against the shoulder 10, thus afiording an eflective lock for both ends of the stove pipe section. In Fig. 2 I have shown a cross section of the seam or joint when the stove pipe section is locked, illustrating one edge of the section abutting against the shoulder 10, and in- Fig. 3 I have shown a cross section of the'seam when the section is locked, showing one edge of the stove pipe section lying in the notch 9 and over the portion of the pipe beyond the notch 9.

In Figs. 5 and 61 have illustrated the method of assemblingthe section and looking the edges together. The first operation as illustrated in Fig. 5. is to twist the section in helical fo-rmand engage the flanges 6, and 7. When this has been done, the o posing flanged edge is passed diagonal y through thenotch 9 and theopposite end passed behind'the shoulder 10.. From this construction it will be observed-that both ends of the stove pipesectio n will be prevented from: becoming unlocked by compression. In order topass the opposing flanged edge diagonally through the notch 9, it is preferable to slightly spring inwardly the portion 11. In Fig. 6 I have shown the flanged edge partly inserted through the notch 9. V 1

As shown by Fig. 4:, the end-margin of the section, next the crimped portion, is bent inwardly as at 10? to facilitate introducing the crimped end into a second section.

, Having thus described my invention, what I claim as new thereln and des1re to secure by Letters Patent of the United States is which the opposing edge is'adapted to rest and provided on the opposite ,margin with an inwardly turned hook-flange of less length than the firstmentioned flange and with a notch'cut beyond the edge of the inturned flange, the portion of the pipe section of the end adjacent the notch, being inwardly bent, the margins of the section beingfastened together by twisting the section in helical form and engaging the flanges so that the flanged margin of one .end may be inserted in the notch and over the inwardly bent portion and'the opposite flanged margin may be positioned behind the outwardly formed shoulder whereby the section is assembled for use without any other operation.

2; A stove pipe section formed from a single piece of sheet metal provided along one margin with a continuous and unbroken outwardly bent hook shaped flange and on one end with an outwardly formed shoulder adjacent to and parallel with the edge of said flange againstwhich the opposing edge is adapted to rest, and provided on the opposite margin with an inwardly turned hook shaped flange of less length than the first mentioned flange and with a notch inwhich the opposing edge is adapted to be seated, a portion of the pipe section of the end adjacent the notch being inwardly bent and positioned beneath the opposing flange when the flanges are engaged, the wall of the notch and the inwardly bent portion adja cent said notch preventing the unhooking of the flanges by compression at one end of the pipe section, and the outwardly formed shoulder preventing the unhooking of the flanges by compression at the opposite end of the section, said flanges being capable of being engaged by giving the stove pipe section' a helical form so that the end margin of one end of the section may be seated behind the shoulder and one end of the opposite margin may be positioned within the notch.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses.

JOSEPH L. HEMP. Witnesses:

E. L. WAILACE, JOH 0.1I1GDON. 7

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.

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