US172844A - Improvement in stove-pipe joints - Google Patents

Description

1:. R. an'owmow.

STOVE-PIPE JOINT.-

No 172,844. Patented Feb.1, 1876.

. B c 4e NAPETERS. PHOTO-LITHUGRAPHER, WASHINGTON, D10

b UNITED STATES DAVID RQBROWNLOW, OF MIDDLETOWN, CONNECTICUT.

IMPROVEMENT m STOVE-PIPE JOINTS.

Specification forming part of Letters Patent No. 172,844, dated February 1, 1876 application filed October 11, 1875.

To all whom it may concern:

Be it known that 1, DAVE) R. BROWNLOW, of Middletown, county of Middlesex, State of Connecticut, have invented an Improved Coupling-Joint for Stove-Pipe,;of which the followin g is a specification, reference being had to the accompanying drawings forming part hereof.

My invention consists, as a coupling-joint for stove-pipe, in the combination, with the ends of each length of pipe, formed with the specific curves in its exterior surface, and the circumferential flange, hereinafter particularly shown and described, of an encircling band, formed with-the specific curves on its interior surface, arranged to fit upon and into the curves and flanges upon the ends of the pipe-lengths, as herein specified.

Figure l is a longitudinal central sectional view of the ends of two lengths of stove-pipe embodying my invention, and adjusted as a joint. Fig. 2 is a side elevation of the same, showing the encircling band in position to complete the coupling-joint.

A and A are the sections or lengths of pipe. Each length is formed with its exterior surface curved outwardly at a, beyond the line of the surface b of the pipe, and curved or depressed inwardly at 0, below the line of the surface b, and with the projecting flanges or lips d d, which are arranged at right angles to the surface I), as shown, on each of the lengths A and A, respectively, as shown. The said curves a and c and flanges d d are formed in each end of each length of pipe, and extend circumferentially around the pipe, as shown.

B is the encircling band, and its interior surface is formedwith the centrally-located circumferential deep and narrow curve 6, and the circumferential short projecting curves b, and the circumferential wide depressed curves 0. on either side of the curve e, as shown. The curve 6 is arranged to fit over the flanges d and d when the ends of two sections A and A are adjusted together, as shown in Fig. 1 and the short curves 1; project and fit into the depressed curves 0, and. the wide curves at fit over and upon the curves at in the pipesections. The said curves being adjusted into and upon each other, and the band B being drawn closely about the pipe-joint by the screw-bolt shown at C, the sections are sesur'ely and tightly jointed andcoupled together.

The metal of which the band B is constructed being thin, the curves formed, as described, on its interior'surface appear upon its exterior surface in reverse in Fig. 2.

I am aware that a pipe-coupling has been heretofore made with a corrugation formed in the end portion of each section of pipe, in combination with a band having depressions .to correspond to and fit over said specific corrugations, and also that a pipe-coupling has been heretofore made with a flange turned up on the end of each section, in combination with aband having a recess for the reception of said flanges when adjusted together. I do notclaiin either of these devices, either separately or together, intending to limit my claim hereunder to the specific and particular combination of curves in the pipe-sections and encircling band herein shown and described that is to say, to the pipesections A and A,

arranged to be firmly jointed and coupled together by means of the curves a projecting above the exterior surfaces 1), the curves 0 depressed below said surface I), and the flanges d d at right angles. to said surface b, formed in the ends of the said pipe-sections, in combination with the encircling band B, having the centrally-located deep narrow curve 6, arranged to fit over the flanges d' d when adjusted together, the curves 1) arranged to fit into the curves 0 in the'pipe, and the curves at arranged to fit into the curvesa in the pipe, together with the binding-screw C.

What I claim, therefore, as my invention,

and desire to secure by Letters Patent, is-

The combination, as a coupling-joint for stove-pipe sections, of thesections A and A, having the circumferential outward curves a and inward curves 0, in the exterior surface thereof, extending, respectively, above and below the line of the surface b, and the circumferential right-angled flanges d and d, respectively, with the band B, having the central deep, narrow curve e, the short projecting curves 1), and wide curves a, extending circumferentially on the interior surface thereof, and the binding-screw C, all constructed and arranged to operate as described.

DAVID R. BROWNLOW.

Witnesses:

A. B. OALEF, D. WARD NoarHRor.

PATENT Orrrcn.

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