US464609A - Stove-pipe thimble - Google Patents

Description

(No Model.) v

M. J. FAHEY.

STOVE PIPE THIMBLE;

No. 464,609. PatentedDec. 8, 1891.

UNITED STATES PATENT OFFICE.

MICHAEL J. FAHEY, OF FORT MADISON, IOIVA.

STOVE-PIPE THIMBLE.

SPECIFICATION forming part of Letters Patent No. 464,609, dated December 8, 1891. Application filed June 7, 1890. Serial No. 354,591. (No model.)

To all whom it may concern:

Be it known that 1, MICHAEL J. FAHEY, a citizen of the United States, residing at Fort Madison, in the county of Lee and State of Iowa, have invented a new and useful Stove- Pipe Thimble, of which the following is -a specification.

My invention is an improvement in stovepipe thimbles, and has for its object to provide a thimble which will be fire-proof.

With this object in view the invention residesin the details of construction and in the combination of parts hereinafter fully described, and particularly pointed out in the claim at the end of this specification.

In the drawings illustrating my invention, forming part of this specification, in which like letters and numbers of reference indicate corresponding parts in all the views, Figure 1 is a vertical longitudinal section of my fireproof thimble. Fig. 2 is a plan view of the upper annular cap thereof, and Fig. 3 is a similar view of the lower annular cap.

In the drawings, A designates the outer cylinder, made of earthenware, fire-clay, iron, stone, asbestus, or the like.

13 indicates the inner cylinder of metal or the like, C the upper annular cap, D the lower annular cap, and E the air-space between the two cylinders. The upper annular cap (Jis provided with a sleeve 0, which fits over the end of the outer cylinder A. The lower annular cap D has its edges spun over the other end of the outer cylinder A. The whole is fastened together by means of the inner cylinder B, which has the edges at its upper end spun over and preferably soldered to the inner .rim of the upper annular cap (3, and likewise the edges at its lower end are spun over and preferably soldered to the inner rim of the lower annular cap D. However, even though the soldering should be omitted, the upper cap 0 will be supported by its outer rim, the inner cylinder will be supported by its'upper spun end over said cap, while its lower spun end will support the lower cap D, and the latter will support the outer cylinder. Thus the whole device will be held together and in position without the necessity for solder or bolts or rivets. O and D have perforations e to provide ventilation for the air-space E, and these perforations may be and by preference are in alignment with each other to increase slightly the volume of air which passes through the thimble in a given time.

It will be understood that while my improved thimble may be used in a number of places where stove-pipes or other fines or heatconductors pass through floors, ceilings, walls, roofs, and the like it is principally designed to surround stove pipes where they pass through the ceiling of one room into another room. In this position it serves the following functions: It providesa means of ventilation through the perforations e and the air-space E. It allows such foreign matter as may fall into the perforations in the upper annular cap to pass through the perforation in the lower one. It guards against accidental fire caused by overheating of the inner cylinder B by providing the air-space E between said inner cylinder and the wood-work or other material of the house liable to catch fire and by the fire-proof and non-conducting nature of the outer cylinder A, which may be in immediate contact with such materials. It also provides a heating device whereby the temperature of the upper room may be raised by the air passing through the perforations e and the air-space E at the same time lowering the temperature of the thimble.

Instead of fastening the parts together, as described, I may connect the annular end caps O and D by means of rods or bolts, and thus dispense with the necessity of soldering.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The herein-described stove-pipe thimble, comprising an annular upper cap C, having an outer supporting-rim and a depending sleeve, an inner cylinder B, having outwardlyspun ends arranged at an angle, the upper of which engages the inner edge of said cap, a lower annular cap D, engaged by the lower spun end and its outer edge being spun upwardly, and an outer fire-proof cylinder A,

The two annular caps its lower end engaged by said spun edge and my own I have hereto affixed my signature in its upper end arranged lnside said sleeve, the presence of two Witnesses.

c *linders bein concentric and formin an v t 1 aimular space TE, and the caps having p erfo- MICHAEL LAHEL 5 rations opening into the ends of this space, Witnesses:

as set forth. ORREN I. SEARLES,

In testimony that I claim the foregoing as l FRANK M. GUSTIN.

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