US350360A - Vacuum-pan - Google Patents

Description

(No Model.) 2 Sheets.Sheet 1. C. HARRIMAN.

VACUUM PAN.

No. 350,360. Patented Oct. 5, 1886.

%f@ INVENTOR ATTORNEYS WITNESSES (No Model.) 2 Sheetssheet 2'. O. HARRIMAN.

VAGUUM PAN.

No. 350,360. Patented Oct. 5, 1886.

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UNITED STATES PATENT OFF CE.

CHARLES HARRIMAN, OF YONKERS, N EW' YORK.

VACUUM-PAN.

.srncirrcArioiv forming part of Letters Patent NQ 350,360, dated October 5, 1886. 4 Application filed December 11, 1885. Serial No. 185.315. (X0 model.)

To all whom it may concern.-

Be it known that I, CHARLES HARRIMAN, of Yonkers, in the county of \Vestchester and State of New York, have invented certain new and useful Improvements in Vacuum-Pans; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appcrtains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a sectional elevation of my improved stationary horizontal vacuum-pan. Fig. 2 is an end view of the brick-work, showing the upper and lower tubes, man-hole,and Vacuum-pipe. Fig. 3 is a sectional elevation of my improved portable horizontal vacuumpan mounted on wheels. Fig. 4 is an end view of same.

Like letters of reference indicate corresponding parts in all the figures.

The object of my invention is to provide a stationary or portable horizontal vacuum-pan which can be worked with less fuel and can be more readily kept at a uniform temperature than those heretofore used for the same purpose. The temperature being more uniform will prevent carbonization taking place during the process of evaporation, as in higlrelass and costly acids, where crystallization takes place at a temperature of 170Fahrenheit.

I paratus can also be used for the extracting of liquids from fruits, vegetables, eggs, or fertilizing materials,in which case the uniform temperature allows the evaporation to take place at a lower temperature, thus preventing the materials from carbonizing, the agitator being used when the material thickens to accelerate evaporation.

In carrying out the object of my invention for the purpose of evaporating at a low or high uniform temperature, I have constructed my improved horizontal vacuum-pan, made of copper or other metals or materials, inside a cylindrical water-jacket or boiler, made of wrought-iron plates, where the water may be heated by'the jacket or boiler-shell eomingin direct contact with the furnace upon which it is fixed in the one case, and in the other form- My apboiler is' somewhat after the construction of a steam-generator, from the fact that after the gases leave the fire they pass through one half ofthe tubes to the front end of the water -j acket or boiler, then returning through the top section or other half of the tubes to the smokestack. ture of thelwater which surrounds the pan in which the acids, liquids, or other materials are evaporated. The temperature can be regulated by a self-regulating damper adjusted by the pressure or blowing of the water and feeding with cold water or by adding fresh coal to the furnace, so that the heat may easily be re duced from the boiling-pressure to 100 Fahrenheit, as desired. the water-jacket or bfoiler itwill be seen that thejacket is extended at each end, and on the extension'the cast-iron ends are riveted thereon for securing and closing the vacuum-pan, the cover on one end being for a stationary joint, and it has a gland riveted on same to receive a shaft which carries a number of arms or knives for somewhat agitating or producing ebullition at a low temperature, thereby assisting evaporation. At the opposite end there is a fixing for carrying the other end of the shaft, which is independent of the outside cover, the cover with a stationary gasket for making the joint being hinged on the cast-iron end riveted to the water-jacket or boiler extension, to facilitate the cleaning out of the vacuum-pan, the bolts for making thejoint being hinged in the center, so that they may be turned back on their centers when the cover is opened. Each outside cover is made of copper, and a east-iron flange riveted thereon for making the joint, and have eyeglasses, liquorgages, feed and discharge pipe. Attachedto the water-jacket or boiler-shell by a pipe is a mud-drum, in which the feed and blow-01f pipes are connected. In a portable apparatus the feed and blow-off pipes are connected to the water-space around the fire-box. The vapor pipe is taken from the center of the vacuumpan, and passes through the cylindrical waterjacket or boilerto a man-hole, where the cover 01 the man hole can be made for a gland-joint.

In this way I get a uniform tempera- I From :the tube-heads of 0n the side of said man hole the safety-valve is attached. The vacuum pipe can be then attached to an exhaust-blower, steam-jet overflow-condenser. and pump.

The apparatus, when complete for station ary use, is built up in a brick-work at each end, is faced with castings for a t'urtmce-frout on one side and ash-door at the other side. It will be seen that the furnace is of ordinary construction, and the direct course of the gases is through the combustion-rhamber and through the lower half of the tubes. where it returns through the top or other half of the tubes to the return-flue, upon which a smokestack is attached, and when the apparatus is made for portable use the lower tubes are shorter than the upper tubes just so much as is taken up by the furnace which is made with a water-space around it and forms part of the cylindrical water-jaeket or boiler. The gases from the furnace in this case go through the lower or shorter tubes and in a combustionehamber, and thence through the upper tubes to the smoke-stack. The ends of the vacuunr pan are as before described, and the vaporpipe istaken from the center through the eylindrieal water-jacket or boiler and through the man-hole, and the only difference between the stationary and portable one is that one iS formed wholly of iron and mounted on traveling wheels, so that horses can be attached for taking it into the roads, where it may be used for evaporating tan-bark, maplesugar, and other materials.

In Figs. 1 and 2 of the drawings I have shown a sectional drawing of my stationary horizontal vaeuuurpan, and in which A represents the vacuumpau, and 13 represents the water-jacket or boiler with extended ends. G represents the tube'heads, in which the tubes D are expanded and secured. E is the castiron ends for securing and closing the vacuum-pan. F is the cover, whichis hinged withits stationary gasket to facilitate the cleaning out of the vacuum-pan. G is the cover for a stationary joint, and on which the gland for riveted. H are the eye the agitating'shaft is J are the liquidgages,

glasses on the cove on the side of which a feed for the liquid can ssoeeo be attached. J is the discharge pipe. K is the agitating-shaft. L is the arms or knives for agitating the liquid for producing ebullition and assisting evaporation. M is the ti.\'- ing for carrying the end of the agitating shai't. N is the vacuum-pipe in the center of the vacuuni-pan. O is the cast-iron man-hole on the water-jacket or boiler, through which the V21- por-pipe passes. P is the gland on which is the joint between vapor-pipe and the water-jacket or boiler. Q is the safety-valve for relieving the pressure. It is the pipe connecting the mud-drum with the water-jacket or boiler. S is the mud drum. T is the feed-pipe to the water jacket. U is the blow-off tap. V is the ash-door in the cast-iron front. is the furnace, the door of which is in the custiron front. X is the ash-pit. Y is the combustionchamber, and Z is the smoke-stack.

In Figs. 3 and i, A represents the vacuum pan, and B represents the water jacket or boiler, with the ends extended for securing the cast-iron ends, and the fire-box IV, with the waterspace around it, all letters of refer once for other parts being the same as referred to in Figs. 1 and 2, except the traveling wheels, which are marked S.

I clain1- 1. In a vacuum-pan, the horizontal tub-s placed in the Water-jacket or boiler B, substantially as and for the purposes specified and set forth. 7

2. In a vacuum-pan, the combination of the horizontal water-jacket or boiler 13, with tubes or lines I) man-hole 0, cover and gland l, with furnace W, and fire-box IV, substantially as and for the purpose described and set forth.

3. In a vacuum-pan, with water jacket or boiler, the combination of the cast-iron ends 5, the hinged cover F, and stationary cover (l, for closing the vacuum-chamber, substantially as described, for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

CHAS. IIARHIMAN. -Witnesses:

"W. H. \VOOD, Issac L. SINK.

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