US762137A - Steam-boiler. - Google Patents

Description

PATENTED JUNE '7, 1904.

H. CARMONT. STEAM BOILER. APPLICATION FILED MAIL l0. 1903 2 SHEETSSHEET 1.

N0 MODEL.

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PATENTED JUNE 7, 1904.

H. CARMONT. STEAM BOILER.

APPLICATION IILLD mam-10. 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

java/afar mzll/aad'firnzald UNITED STATES Patented June 7, 1904.

PATENT OFFICE.

HAZELIVOOD OARMONT, OF KlNGSTON-ON-THAMES, ENGLAND, ASSIGNOR TO WILLIAM EDWARD OARMONT, OF HELMSDALE, KINGSTON-ON- THAMES, ENGLAND, AND THOMAS ROTHIVELL HASLAM, OF LONDON,

ENGLAND.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 762,137, dated June 7, 1904.

Application filed March 10, 1903.

T ctZZ whom it may concern.-

Be it known that I, HAZELWOOD OARMONT, a subject of the King of Great Britain, residing at Helmsdale, Kingston-on-Thames, county of Surrey, England, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification.

The object of this invention is to construct a water-tube steam-boiler in such a manner that the tubes can be easily and readily inspected and all scale or other deposit removed without injury to the tubes or boiler and without impairing the efliciency of the apparatus and to economize fuel and burn smoke and, further, to rapidly heat the water and raise steam, a single or double circulation of the water being effected in the apparatus.

My invention will be readily understood from the following description, aided by the accompanying drawings, in which Figure 1 is a longitudinalsectional elevation of the steam-boiler on the line /0 w of Fig. 2. Fig. 2 is a cross-section of same; Fig. 3, a sectional elevation, on an enlarged scale, of

2 5 the tubes in which the water circulates. Fig. 4 is a part-sectional elevation, on an enlarged scale, of inlet and circulating pipes, showing the clack-valve. Fig. 5 is a part-sectional elevation of inletand circulating pipes, the

3 clack-valve being dispensed with.

For the purpose of my invention I form my boiler somewhat of a inverted-V shape, the apex or top being the boiler proper, the sides being tubes. The tubes 2 are connected to the apex or boiler proper, 1, and to the casing 3 at the lower part and are so placed that the tubes 2 in each row or ring touch each other. The tubes 2 are secured at each end, the bottom end short and the top long,

4 which top end projects into the boiler 1 and forms a Wall to prevent any sediment in the boiler falling down the tubes. The rows or tubes 2 are arranged to have the longest reduced end at top and bottom alternately, so that the heat and products of combustion pass between the reduced portions 4 and then up between two rows or rings of tubes 2 and Serial No. 147,130. (No model.)

then through the reduced portions 4 of the next set and down between the second and third row or rings of tubes 2, and so on, as will be understood by the arrows in Fig. 2,

whereby both sides of each pipe get fully heated. Inside these tubes 2 are small diameter tubes or pipes 5, and these reach nearly to the bottom of the outer tubes 2 and project into the boiler 1, the upper end being held in position by a holed plate or plates 6 at or above the top of the outer tubes 2.

The reduced ends of the tubes 2 at top and bottom fit in holes of the casing 3 and boiler 1, and a plate 6 is provided inside the top part of the boiler to prevent priming. The bottoms of the tubes 2 are held in position by a plate 7, secured to the casing. Y

The boiler proper, 1, is formed from a trough, into which the pipes 2 are secured in the usual manner. This trough is covered by a cap or trough 8, so as to form the boiler, the jointing being of a proper character to insure a perfect seam without leakage.

The fire-box is formed of coiled tube or tubes 9, through which the water passes to the boiler by the pipe 10, the inlet to the coil being at 11; butbetween this inlet 11 and the boiler 1 pipe 12 is arranged, said pipe being provided with a clack-valve 13 (see Fig. A) to prevent the inflowing water passing up the tube 12, but compelling it to pass through the coil 9, the circulation onl; taking place between the pipes 2 5 and the boiler 1; but by dispensing with the clack-valve 13 and continuing the supply-pipe 11 past the pipe 12, as shown at Fig. 5, a double circulation will be createdz'. 0., between the pipes 2 5 and the boiler 1 andbetwecn the coil 9, pipe 10, boiler 1, and pipes 12.

When the clack-valve 13 is employed and the pump is not working, a circulation of water in the coil 9 and boiler 1 is kept up automatically by reason of the water ascending the pipe 10 and descending the pipe 12; but when the pump is working the water will not pass the clack-valve 13, but will pass through the coil, and so be heated before it gets to the boiler.

With the construction shown at Fig. 5 a double circulation is always kept up whether the pump be at work or not.

The casing 3 is provided with a removable lid or cover 14, so that when the tubes require inspection or cleaning all that is necessary is to remove the cap or covers 1 1 and 8 of the boiler 1, when they will be exposed to such an extent that any cleaning or repairs can be readily and easily effected without in any way interfering with the apparatus.

The circulating-chambers are provided with exit and blow-off pipes 15, so that all sediment can be easily removed.

Chambers may be formed in the casing to superheat exhaust-steam when required, as in motors, and doors maybe provided by which the outside of the tubes 2 can be readily inspected and cleansed.

16 is the fire-door opening through which the fuel is fed, the products of combustion passing up and down between the tubes 2, as before explained, into the casing 3 and through openings 17 between the flanges 15, which secure the lid 18 to the boiler 1 into the dome 14 and away by the flue 19.

The water from the inlet 11, as before stated, passes direct to the coil 9 and then up the pipe 10 into the boiler, the water in the boiler also circulating down the tube 5 and up the tube 2, so as to be rapidly heated in transit, the hot water from the boiler passing from the pipe 12 and into the coil 9 to complete the circulation.

By this invention a great circulation of water takes place in the boiler proper by reason of the circulation between the boiler and the coiled tubes enhanced by the circulation taking place between the boiler and pipes 2 5, so that the water is never at rest, a feature of great importance in rapidly producing and maintaining steam and keeping the boiler clean.

20 is the steam-pipe leading from the boiler l to any motor.

21 represents the fire-bars, and 22 the ashpit.

WVhat I claim, and desire to secure by Letters Patent, is

1. In a tubular steam-boiler, in combination with a suitable lire-box, a boiler located above the fire-box, a series of double tubes supported above said fire-box and communicating with said boiler, each of said double tubes comprising an outer tube having a closed outer end, and an inner tube extending into said outer tube, and a pipe coiled within said fire-box and having terminals communicating with said boiler and provided with a branch pipe whereby water may be supplied to said coil.

2. In atu bular steam-boiler, in combination with the fire-box and the boiler proper, a series of double tubes communicating with the boiler and extending into the space above the fire-box, said tubes affording one means of circulation of the water supplied to the boiler, and means for affording a second or double circulation of the water, comprising a pipe coiled within said fire-box and having terminals communicating with said boiler.

3. In a tubular steam-boiler, in combination with the fire-box and the boiler proper, a series of double tubes commumcating w1th said boiler and extending into the space above said fire-box, a pipe coiled within said fire-box and having a terminal communicating with said boiler, an inlet-pipe communicating with said coiled pipe, a branch pipe communicating with said inlet-pipe for supplying water thereto, and a pipe 12 communicating at one end with said inlet-pipe and at its other end with the boiler, the combination affording a double circulation of the water in the boiler, as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HAZELWOOD CARMONT.

l/Vitnesses:

PERCY E. MATTOOKS, HUGH HUeHEs.

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