US745642A - Boiler scrapper and cleaner. - Google Patents

Description

No. 745,642. PATBNTEDDEG. 1, 1903.

H. G. MILLER.

BOILBR SGRAPBR AND CLEANER.

y APPLIGATION FILED DEG. 4, 1902.

N0 MODEL.

witwassen r UNITED STATES Patented ecember 1, 1903.

PATENT OFFICE.

BOlLER SCRAPER vAND CLEANER.

SPECIFICATION forming part of Letters Patent No. 745,642, dated December -1, 1903.

Application tiled December 4, 1902. Serial No. 133,932. (No model.)

To all whom it may concern.: A

Be it known that l, HUGH C. MILLER, 'a citizen of the United States, residing at Brenham, in the county of vWashington and State of Texas, have invented a new and usefulr vided to permit the rapid discharge of the refuse-laden water.

The construction which at present is considered preferable and has proven entirely satisfactory is shown inthe accompanying drawings and is described in the following speeicaticn.V VThe right is reserved, however, to make changes and modifications from the embodiment set forth.

In the drawings, Figure 1 is a perspective view of a boiler, a portion of the shell thereof being broken away to more clearly show the arrangement of the improved cleaning means. Fig. 2 is a sectional view, on an enlarged scale, through* the lower portion of the boiler and the cleaning means. Fig. 3 is a detail perspective view, on an enlarged scale, of said means. Fig. 4 is a verticalcross-sectional view through the same.

Similar numerals. of reference designat corresponding parts in all the figures of the drawings.

In the present embodiment the boiler-shell is designated as a whole by the referencenumeral 10 and may be of any form desired or well known to the art, in itself forming no part of the present invention, the tubes not being shown in the lower portion of said boiler in order that the invention maybe fully illustrated. Arranged longitudinally within the lower portion of the shell, and spaced a slight distance above the bottom thereof, is an outlet conduit or pipe 11, that extends through the end wall to any distance desired and has a T-coupling 12 at its outer end, to one nipple of which is attached a valved outlet 13, the other being connected to a head 14, which is in the form of a stuifing-box. The pipe or conduit 1l hasits inner end open and terminating short of the adja cent; end of the boiler, being, furthermore, provided in 'its under wall with a longitudinally-disposed slot 15.

Arranged within the boiler-shell, and conforming to the shape thereof, is a plurality of cleaning devices, which may be of any wellknown form, but preferably consist of steel or metallic scraper-blades 16, that rest against the inner face of the boiler-shell. Located longitudinally within the pipe 11 is an actuatingstem 17, that extends through the stu d- `ing-box 14 and has an exteriorly-arranged handle 18. This stem, as shown in Figs. 3 and 4, is preferably tubular in form, being provided with transversely-disposed openings v19. The scraper-blades lare connected with the stem by means of Shanks 20, riveted or otherwise secured to said blades and passing through the slot 15 ofthe pipe, the upper ends of the shanks also passing through the openings 19 of the stem and being secured therein by rivets or bolts 21. It will be evident that when the stem is reciprocated the scraperblades will be moved back and forth over the interior face of the boiler-shell, thereby dislodging any accumulation thereon. At the same time the water will be thoroughly agitated toprevent the sediment again settling. Upon opening the valve 13 the pressure within the boiler will canse the refusedaden water to pass through the slot 15 in the pipe, so that it will rapidly discharge. At the same time the Shanks 20, moving longitudinally in said slot, will prevent the same being clogged and will also assistin keeping the outlet-pipe clear. Thus a simple and effective cleaning device is provided, which will not only scrape loose any sediment, but will thoroughly remove the same from the boiler. The cleaning operation can furthermore, be easily eected without materially interfering with the use of the boiler for its usual purposes. Y

From the foregoing it is Vthought that the construction, operation, and many advantages of the herein-described invention will be apparent to those skilled in the art without further description, and it will be under- IOC stood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the inventionfor instance, the invention can be and is intended to be operated from either end of the boiler, and in high-pressure boilers the piston or stem can be extended and actuating means arranged Within the pipe and connected with the scraper for moving the same between the pipe and shell.

3. In a boiler, the combination with the boiler-shell, of a blow-off pipe arranged inside the shell and having an opening in its wall, a cleaning device arranged Within the boiler exteriorly of the pipe, actuating means movably mounted within the pipe, and a connection between the cleaning device and the actuating means, said connection passing through the opening.

4. In a boiler, the combination with the boiler, of a blow-off pipe located within the boiler and having a longitudinal slot in its wall, a cleaning device arranged Within the Y boiler exteriorly of the pipe and coacting with the boiler-wall,actuating means movably mounted within the pipe, and a connection between the cleaning device and the actuating means, said connection passing through and being longitudinally movable in t-he slot.

5. In a boiler, the combination with the boiler, of a blow-off pipe arranged longitudinally within the boiler, a plurality of spaced cleaning devices located in the boiler exteriorly of the pipe, an actuating-stem located and longitudinally movable Withinl the pipe, and means connecting the stem and the cleaning devices. Y

6. 'In a boiler, the combination with an outlet-pipe having a longitudinal slot, of a plurality of cleaning devices arranged transversely and exteriorly of the pipe, an actuating-stem arranged longitudinally Within the pipe, and connections between the stem and cleaning devices.

7. In a boiler, the combination with an outlet-pipe having a longitudinal slotin its under wall, of a plurality of curved cleaningblades arranged transversely and eXteriorly of the pipe, an actuating-stem arranged longitudinally within the pipe, and a plurality of shanks connecting the stem and blades and passing through the slot in the pipe.

8. In a boiler, the combination with a hollow actuating-stem having alined openings in its opposite Walls, of a cleaning device having a shank that passes through and snugly fits in the openings, being held thereby against movement with respect to the stem, and means for securing the shank to the stem.

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

y HUGH C. MILLER.

Witnesses:

J. D. CAMPBELL, I. D. AFFLECK.

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