US27113A - Gas-eetobt - Google Patents

Description

J. DAVIS & S. OHADDOGKJ.

GAS RBTORT.

No. 27,113. Patented Feb. 14, 1860.

fi a'fnzsses. Zi Z, 43 224444 Jim/m W UNITED STATES PATENT OFFICE.

JOHN DAVIS AND STURGIS CHADDOCK, OF BOSTON, MASSACHUSETTS.

GAS-RETORT.

Specification of Letters Patent N 0. 27,113, dated February 14, 1860.

To all whom it may concern:

Be it known that we, JOHN DAVIS and STURcIs CHADDOCK, of Boston, in the county of Suffolk and State of Massachusetts have invented a new and useful or Improved Portable Flue Gas-Retort; and we do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of which Figure 1 denotes a side elevation of the said retort. Fig. 2 is a vertical and longitudinal section of the same; Fig. 3, a horizontal section of it, taken through the movable fines, to be hereinafter described. Fig. 4 is a top view and Fig. 5 an inner face "iew of the door to be hereinafter described.

It is well known that in the manufacture of gas, the longer the gas is kept in a heated state, the purer it will be, and that in gas retorts as at present constructed, the fines for the reception and distribution of gas are very liable to be filled and choked up with carbon, and that it is very difiicult to keep them clear.

The object of our invention is to construct a gas retort with movable fiues, which can very readily be removed for the purpose of being cleaned, or to substitute new ones, should it be desirable. By our invention we also retain the gas within the retort until its immediate entrance into the stand pipe, without passing through a mouth piece outside of the retort, as is usually done, and we thus make a saving in the quality and quantity of the gas. e also provide the retort with a safety valve for the purpose of allowing the gas to escape directly from the retort to the stand pipe, should the retort become too heavily charged with gas by the fines becoming obstructed, or by any other means.

In the drawings above mentioned A, denotes the main body of a gas retort, the same to be set in brick work or other proper material, entirely up to its front surface, the said retort to be made of cast iron, clay, or other material. In the interior of the retort, and a short distance in rear of the front part of the same, is a collar or projection which runs nearly around the inner periphery of the retort, or to within about six inches of the bottom thereof.

C, is the door of the retort, and is constructed on its inner face with a collar or projection running nearly around it, as seen in Fig. 5, which abuts against the collar above mentioned of the retort, and thus forms a tight flue D, around the door C, for the passage of the gas into the stand pipe boX. Ive also place within the retort, and about eight inches above the bottom thereof, two or other suitable number of movable flues B, which extend into the interior of the retort about three quarters of its length, the said fiues being made to fit tightly, at their outer front ends, in holes made in the collar in the front part of the retort, and at their rear ends in small projections 0, cast in the body of the retort, as seen in the drawings. The said fines are also made a very little smaller at their rear ends, in order that they may easily be started and withdrawn from the retort. Thus it will be seen that we not only keep the door entirely within the retort and exposed to its heat, but by means of the flue or passage D, around the door, and the tines B, connected with it, we expose the gas within them to the Whole heat ofthe retort, without exposing it to the outer atmosphere, as in retorts whose mouthpiece extends outside of them.

F, is a stand pipe box constructed on the top part of the retort and immediately over the flue D, and is made with an inclined under side as seen in Fig. 1, the said under side projecting beyond the front face of the retort, and made open, and is to be closed by a small cover or projection a, formed on the upper part of the door C. By removing the door C, and with it the cover a, the stand pipe and its box can be cleaned very easily and effectually, and the movable fiues B,

can also be removed and cleaned very expeditiously, or new ones substituted if necessary. Ive also place a safety valve E, on the top part of the inner projection of the door C, as seen in Fig. 4, which will open, if the retort becomes too heavily charged with gas by the fines becoming clogged, -or other causes, and allow the superfluous gas to escape into the stand pipe.

It will be seen that the difference between our retort, and the retort of H. K. Symmes patented Aug. 23, 1859, independent of the difference in the construction of the fines themselves, consists in taking the gas from the lower part of the retort and passing it through the flue around the door previous to it entrance into the stand pipe, instead of conducting it immediately into the stand pipe, from the upper part of the retort, as in Symmes patent. And thus by our invention We keep the gas confined in a small space in passage from the retort, longer than by any other contrivance at present in use, and consequently the oil and coal tar are more effectually consumed, and the gas rendered purer, and of greater quantity.

1. With regard to the movable flues We do not claim a semicircular piece of metal,

-made to slide on lips and form a passage in the top of the retort, after it is placed within the retort, and leading directly from the top of the retort into the stand pipe, as in the case of H. K. Symmes above referred to, but What We do claim is the movable flues B, constructed and applied as above described, in connection With the door C, and its flue or projection D, and the collar of the retort, substantially in manner and for the purpose as above described.

2. So With regard to the door of the retort, We do not claim a double door With its exterior portion outside the main body of the retort, as in the patents of Alonzo M. Giles, March 17, 1859, and John L. Stewart, June 1st, 1858, but What We do claim is the peculiar construction of the door 0, with its projection or flue D, in connection With the collar of the retort, and the movable flues B, the Whole being applied to the interior of the retort, and operating together, substantially in manner and for the purposes as above set forth.

3. We also claim the combination of the safety valve With the flue D, of the door C. in manner and for the purpose as above specified.

In testimony whereof We have hereunto set our signatures this first day of October JOHN DAVIS. STURGIS CHADDOCK. Witnesses:

B. WELLS DUNKLEE, FREDERICK CURTIS.

Images