US63695A - Improvement in flue-scrapers - Google Patents

Description

.gnitr gluten arnt @Hitt Leners Peeeeee Ne. 63,695, ezeieezApre'z 9, 1867.

. IMPROVEMENT .IN FLUE-SGRAPBRS.

i KNOW ALL .MENEN THESE PRESENTS:

E. A. BLAKE AND H. A. or WORCESTER, MASSACHUSETTS. Y

l That we, F. A. BLAKE and H. A. TYEEEL, both ofthe city and county of Worcester, and Commonwealth of Massachusetts, have made' certain newV and useful Improvements in Flue-Scrapersg and we do hereby declare l that the following` is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure l represents a perspective View of a section'of a flue with our scraper applied thereto, a portion of the flue being shown broken away, to show the scraper more fully; and

Figure .2 represents alongitudinal central section of springB and a part of the rod A to whichit is' attached. l In the drawings, A represents a metallic rod, upon which is placed'the coiled spring B, madein' this instance` 'in therforinrof a double cone, each` end, C, of spring B being so coiled as to fit closely the rod A. small pin, a, is passed through rod A, just inside 4ol" each end of the coiled spring 13, and two other pins, In b, areinserted in rod A upon the outside of springB,.a`s fully shown inl the drawings. Spring B is coiled so that when it is not in use the centric part is a little'larger than the ilueto bc scraped.

The'operation is as followsi The operator takes hold of the end D of rod A', and inserts the other end with the coiled .springBinto the ine E. When the spring is inserted it is contracted: somewhat, so that when it is moved back and forth in the ilue it presses against the inner surface of the flue and conforms freely to the inequalities thereof, and thus eti'eetually removes allidirt, ashes, and scales from the inside of the iiues, and that, too, without injuring the metal of the flue, as is thecasein'ith many ofthe iiue-scrapers now' in use. By the use of pins a a and b b, spring E is allowed to elongate in either direction to a certain eKtent, butlnotso lnuch as to injure the spring. This is illustrated iny red lines, iig. 2, which shows the positionwhich spring B assumes when being withdrawn from il-ue E, fig. l. It will be seen that the first pin a holds' the front of spring B from Sliding back, while the rear pinstops the further elongation of the spring B. When the' spring is being forced intothe Hue, the action of the spring Bis reversed, and the rear of thespring is held hy the rear pin a, and the rst pini() arrests the further elongation ot'spring B.

Spring B might be usedv when confined to rod A in a different manner, although we regard the Inode above described as the best.

Instead of a metal rod to support the spring, one made-oil any other suitable material may be employed, and `a. coiled spring made of any shaped wire may also be used.v The spring, too, may be made in diiierent shape from that shown in the drawings.

secure by Letters Patent, isj p y l 1. The combination with rod A of the spi'ral spring, substantially as and for the purposes stated.

HavinfY described our im ro'ved flue-sera er whatwe claim as new and ot' our invention and desire to o r O a 2. The Combination of springB withrod A and pins a ci and l 6, substantially as and for `the purposes set''orth.

E. A. BLAKE, H. A. TYREEL.

Witnesses:

Tues. DODGE, D. L. MILLER.

Images