US650111A - Steam-reheater. - Google Patents

Description

no. 650,lll. Patented May 22, moo.

A. n. a. w. T. MARSH.

STEAM REHEATER. (Application filed Aug. 31, 1899.)

(No Model.)

Fig. 1

Fig.3 F 4 0 001% o 0 Z 0 o o: 0

Inventors,

fllonzo B.Marsh,

Marsh;

the atmosphere from the second cylinder.

UNITED STATES PATENT OFFI E.

A LoNzo R. MARSH AND ILLIAM T, MARSH, or BROCKTON, MASSACHU- "sETTs, ASSIGNORS, BY MEsN ASSIGNMENTS, TO THE ECLIPSE AUTO- "MonILE COMPANY, or MArNE.

STEAM-REH EATER.

v SPECIFICATIQN forming part of Letters Patent No. 650,1 11, dated. 22,1900;

. pp catio ed August 31,1899. Serial No. 729,043. (No model.) I

Tea whom it may concern.-

Be it knownthat we, ALONZO R. MARSH and WILLIAM T.- MARSH, citizens of the United States, residing at Brockton, in the county of Plymouth and State of Massachusetts, have invented a new and useful Steam- Reheater, of which the following is a full,

clear, and exact description.

In the motor-vehicle'which we manufacture we employ a high-pressure steam-cylinderexhausting into a low-pressu re cylinder and reheat such exhaust before it enters the second cylinder, thereby adding greatly to the effi- --ciency of the engines and in addition prevent from the engine as an struction of a device for economically reheata saturated exhaustfrom being thrown into Without this reheating the exhaust issues objectionably-visible vapor. p p

The object of this invention is the coningi the-exhaust from the first cylinder.

Referring tothe drawingsforming part of this specification, Figure l is a vertical central section of the upper part of our boiler andof our reheater applied thereto. Fig. 2 is a horizontal section of the reheater, and

.Figs. 3 and tare detail views of the means for closing and securing together the ends of the annulartube forming the body of our reheater. l

The boiler, as shown, is of the porcupine type, with its central chamber 1 projecting a short distance above the tubes 2. About said-- 35- chamber and immediately above said tubes 'we place ourreheater, which is annular in form and with its inner diameter substan ,tially corresponding with the outer diameter of said chamber and with its outer diameter substantially corresponding with the extreme boiler, the same jacket which surrounds the manner the surplus heat arising between the tubes 2 strikesthe reheaterand imparts thereto the .heat necessary for suitably raising the temperature of the steamy passing to the low-pressure cylinder.

As before stated, our rehcater is annular in form andis made from a single length of rather large tubing 10, flattened in cross-sectiou and having its ends brought together to complete the circle, as shown in Fig. 2. Ver tically through this reheater-body are inserted a large number of short tubes 11, made steam-tight by being expanded in the holes drilled in the tubing 10, designed therefor.

The ends of the tube 10 are not flattened, but are left cylindrical and internally threaded, being tapped with right and left hand threads,respectively. These tube ends are brought together and at the same time made steam-tight by means of the double plug having its ends oppositely threaded to fit the said lar reheater at one end of the tube 10, and

the pipe 18 conducts the reheated steam therefrom to the low-pressure cylinder. In order for the steam to pass from the pipe 17 to the pipe'18, it must pass through the entire length of the tubing 10 and between the multitude of columnar tubes-11, and inasmuch as the heat from about the boiler is constantly ris ing through said tubes 11 the latter are very hot and raise the temperature accordingly of the passing steam.

By having the tube 10 flattened and the tubes 11 terminally expanded in the same the high steam-pressure within said tube 10 serves to more tightly press the flattened sides into contact with such expanded ends and so insure the tightness of all the joints.

What we claim as our invention, and for which we desire Letters Patent, is as follows, to wit: g

1. In a steam-reheate'r, the combination of the flattened tube curved'into the annular' form, means for closing its ends, steam inletand outlet pipes communicating with said tube at its respective ends, and the-vertical tubes terminally secured in holesin the flat- 7 I tened sides of said 'en nular tube, substan inlet and outlet pipes conlmunicating'witli ially as SQtforth. said annular tube at opposite sides of sai- 2. In a reheater, the combination of the screw=p1u'g, substantially'as set forth. tube flattened throughout all its length ex- Intestimony that we claim the foregoing is 5 eept its ends, and bent into an annular form, invention we have hereunto set our hands said ends being internally threaded with right this 26th day of August, 1899. and left hand screwrthreads respectively; the i ALONZO RJ-MARSH.

plug'having its ends oppositely threaded to WILLIAM '1. MARSH. correspondltherewith,andhaving the wrench- Witnesses: 16 receiving central shoulder; the vertical tubes GUY H. HOLLIDAY,

V opening through said annular tube; and the -A. B. UPHAM.

Images