US1068203A - Tube-cleaner. - Google Patents

Description

T. ANDREWS.

TUBE CLEANER.

APPLICATION TILED 001. 27, 1009.

Patented July 22, 1913.

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TUBE CLEANER. APPLICATION FILED OUT. 27, 1909.

Patented July 22, 1913.

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THOMAS ANDREWS, OF ROCKAWAY, NEW JERSEY, ASSIGN'OR T0 THOMAS ANDREWS IIIANUIEACTURING COMPANY, 015 ROCKAWAY, NEW JEREEY, A CORPORATION 015' NEW JERSEY.

TUBE-CLEANER.

Application filed October 2?, 1909.

To all whom it may concern:

lle it known that It, THOMAS ANDREWS, a citizen of the United States, and residing at Rockaway, county of Morris, and State of New Jersey, have invented certain new and useful Improvements in Tube-Cleaners, of which the tlt'ollowing is a specification.

The invention relates to improvements in automatic controlling apparatus for tube cleaners and has particular reference to a device used in connection with rotary fluid driven tube cleaners for removing the scale from the interior and exterior walls of a boiler tube and means whereby said scale removing means is automatically controlled by means of the operative parts associated with the body of the cleaner.

One object of the invention is the providing of means associated with the cleaner for preventing the rotation of the cutting parts thereof until the body of the tool is inserted within the walls of a tube.

Another and further object of the invention is the providing of means associated with the rotative motor for controlling the admission of fluids to said motor While the tool is in or out of operation, the controlling means acting as a means of controlling the supply of fluids to the operative parts of said rotative motor.

in the following is described in connection with the accompanying drawings one embodiment of the invention, the features thereof being more particularly pointed out hereinafter in the claims.

in the drawings,-l?igure 1 is a longitudinal sectional view of the automatic controlling means illustrating parts of the tube cleaner in diagram; the position of said cleaner and the parts comprising the con trolling means being shown in a position wherein the tube cleaner is being operated or actuated within the walls of a boiler tube; Fig. 2. a side elevation of the controlling means and the operative parts of said cleaner assumed immediately upon the passing of said cleaner beyond the walls of a boiler tube; and Fig. 3 is an enlarged end elevation of the valve or that part of the controlling apparatus which controls the admission of fluids from a suitable receiving chamber to the rotative motor or the means for actuating the essential and operative parts of the tube cleaner.

Specification of Letters Patent.

Patented July 22, 1913.

Serial No. 524,913.

Similar numerals of reference indicate similar parts throughout the several views.

In the drawings, 1 designates the conventional outline of a tube forming part of a series or a plurality of fire or water tubes associated with a tubular boiler.

2 indicates a casing of preferably cylindrical form having formed therein an eccen" tric bore or chamber 3 adapted to receive a concentric rotative motor .1- mounted on sleeve 5 in any suitable manner but in this instance said motor is preferably shrunl zen on said sleeve the ends of which find bearings in boss (3 at one end of said casing 2 and in fluid receiving head 7 at the other end thereof. Sleeve 5 has mounted therein a shaft 8 having formed therein a. fluid passageway 9 and carrying at one end thereof a rotary piston head 10 mounted in chamber 11 in cutter supporting head 12, and at the other end thereof a shut-off disk 13 held in place on said shaft 8 by means of a nut 141:. The endsof said fluid passage 9 open into chambers 11 and 15, respectively. The cutter SIIPPOl'tlllg head 12 is rigidly secured in any suitable manner to the sleeve 5 so as to rotate therewith. For the purpose of supplying fluids to the rctative motor 4 a fluid port 15 is suitably formed in head 7 communicating with fluid chamber 15 in said head 7; said port 15 communicates with a fluid passageway 16 formed in casing 2 which in turn communicates with a series of fluids duct-s 17 communicating direct with the fluid receiving chamber and bearing against the expansion wings on rotative motor L. Fluid is supplied to fluid chamber 1? from any suitable source, (said source is not shown herein as it does not form an sential feature of the invention) but said fluid is supplied through a suitable flexible hose having associated therewith a hose coupling 18. Shaft 8 is slidably mounted. within sleeve 5 and fastened thereto by means of key 19 sliding in keyway 20. To insure an. air-tight chamber iii a stalling be); 21 secured to said head 12 may be utilized, said stu'l'ling box engaging the outer periphery of piston 10. The head of said piston 10 has pivotally mounted therein as at lin s 24 engaging collars arms 26. Links 2 ft are also pivot-ally mounted in collars 25 as at 27. Said cutter arms 26 have mounted therein a retaining bolt 28 on cutter carrying a plurality of cutters 29 held in position on said arms 26 by means of nuts 30.

The operation of the device is as follows: The device is inserted within the walls of a boiler tube and when in this position cutter arms 26 cause the piston 10 to be pushed backwardly through the medium of links 2% which causes shut-off disk 13 to uncover port 15 permitting the fluid from a suitable fluid supply source to pass through a chamber 15 to enter therein and pass to port 16 whence it passes through ducts 17 into the fluid chambers and motor 4. While the device is within the confines of the tube 1, the apparatus is rotated at a high rate of speed and when the arms 26 carrying the cutters 29 pass beyond the end or opening of the tube said arms swing outwardly which causes piston 10 to draw the shaft 8 with it which in turn causes shut-ofl disk 13 to seat itself over the mouth or intake port 15 and cause the instantaneous stoppage of the rotative parts of the device. Further while the device is within the walls of the tube a fluid pressure is supplied to chamber 11 through fluid passageway 9 impinging itself against piston 10 and compelling the arms 26 carying cutters 29 to be forced outwardly into contact with the scale or other foreign substance on the interior walls of the tube.

hat I claim and desire to secure by Let ters Patent of the United States is:

1. A device of the character described comprising a casing provided with a pressure chamber, a fluid reception head, a rotary motor in said pressure chamber, a sleeve associated with said rotary motor mounted in said casing and reception head, a rotary head carried by said sleeve and provided with a recess, a shaft keyed in said sleeve and provided with a fluid passage-way communicating with said rotary head and said reception head, said shaft being adapted to move longitudinally in said sleeve, apiston head carried by said shaft adapted to engage the recess in said rotary head, said casing and fluid reception head being provided with a plurality of ports communicating with a fluid supply and said pressure chamber, and a shut-off disk carried by said shaft adapted to control the admission of fluids fromsaid fluid supply to said ports in said casing and reception head, the position of said shut-off disk being primarily controlled by reason of the position of said piston head in said rotary head.

2. A device of the character described including a controlling means for tube cleaners comprising a casing provided with a pressure chamber, a fluid reception head, a sleeve rotatably mounted in said casing and head, a rotary motor in said pressure chamber and-rigidly mounted on said sleeve, an auxiliary rotary head carried by said sleeve and provided with a recess, a shaft keyed in said sleeve and provided with a fluid passage-way communicating with said rotary head and said reception head, said shaft being adapted to move longitudinally in said sleeve, a piston carried by said shaft engaging said recess, said casing and head having cut therein a plurality of communicating fluid ports, and a shut-off disk carried by said movable shaft adapted to control the admission of fluid from a fluid supply into said ports by reason of the position of said piston in said auxiliary rotary head.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

THOMAS ANDREWS. lVitnesses:

Eow. T. SNOOK, ROBERT /V. ASHLEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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