US649839A

US649839A - Tube-cleaner.

Info

Publication number: US649839A
Application number: US70728799A
Authority: US
Inventors: Thomas J Hart
Original assignee: SHERWOOD Manufacturing Co
Current assignee: SHERWOOD Manufacturing Co
Priority date: 1899-03-01
Filing date: 1899-03-01
Publication date: 1900-05-15
Anticipated expiration: 1917-05-15

Description

Nu. 649,839. Patented May I5, |900..

T. J. HART.

' TUBE CLEANER.

(Application h led Mar. 1, 1899.) (No Model.)

und. 4*

0 my Z n f UriiTnn STnTns PATENT Trice.,y

THOMAS J. HART, OF BUFFALO, NEW YORK, ASSIGNOR TO THE SHERYVOOD MANUFACTURING COMPANY, OF SAME PLACE.

TUBE-CLEANEa SPECIFICATION forming part of Letters Patent No. 649,839, dated May g, 1900.

Application tiled March l, 1899. Serial No. 707,287. (No model.)

ro all whom. it may concern: boiler or other source of supply for the actu- Be it known that I, THOMAS J. HART, a eitiating medium. To reduce the friction of the zen of the United States, residingat Buffalo, shell against the tube in moving it back and in the countyot Erie and State of New York, forth in the same, the shell is made smaller 5 have invented new and useful Improvements than the internal diameter of the tube and in Tube-Cleaners, of which the following is a provided with longitudinal ribs c, which hold specification. the shell out of contact with the tube.

This invention relates to that class of clean- The casin g is provided at a short distance ers which are employed for removing the scale from its open end with a diaphragm D, hav- 6o 1o from the interior surface of the water-tubes ing apertures d, through which the steam or of steam-boilers and which comprise a rotary other actuating medium issues against the head which is rapidly rotated by a turbine turbine wheel E, which is arranged in the wheel and arms which carry the cutters and overhanging front part of the casing and ad which are pivoted to this head in such manjacent to the outer side of the diaphragm D. i 5 ner that the cutters are thrown out by cen- The latter is provided with a central hub d',

trifugal force and brought in contact with the in which is secured an arbor F, which proscale to be removed. The cleaner' is usually jects forwardly from this diaphragm and bcprovided with a tubular handle through youd the open front end 0fthe casino'. which the steam or other actuating iiuid is G represents the rotary head or sleeve, 7o zo supplied to the turbine wheel and by which which is mounted on the arbor F, so as to the cleaner is moved through the water-tube turn thereon and which carries the cutters in removing the scale therefrom. and the turbine wheel. The latter is secured The object of this invention is to connect to the rear end of the head adjacent to the the cutters and their movable arms with the diaphragm D, and in order to reduce the fric- 2 5 rotary head in a simple and effective manner tion between the head and the diaphragm, and to provide the rotary head with an adwhich results from the backward thrust of the vance cutter which cuts into the scale in adcutters, a ball-bearing g is preferably interL vance of the cutters on the movable arms and posed between the head and the diaphragm. removes any excessive thickness of scale. ll represents the movable cutterarms, 8o 3o In the accompanying drawings, Figure lis which are connected at their rear ends by a longitudinal section of my improved tubetransverse pivots 71, to lugs or ears 71,', formed cleaner, showing the cutters on the movable on the enlarged rear portion of the head G arms thrownin. Fig. 2is an elevation, partly adjacent to the turbine wheel, so that these in section, showing the cutters on the movarms can swing at their front ends toward and 35 able arms thrown out. Fig. 3 is a front elen from the axial line of the cleaner. These vation with the nut and cap removed. Fig. arms are provided with forwardlyprojecting a is a detached elevation of the advance cutlongitudinal journals t', which carry the usual ter. Fig. 5 is aperspective view of the same serrated steel cuttei-disks l. These cutters and ot' one of the disk cutters. Fig. 6 is a are preferably mounted upon sleeves i', ap- 9o 4o longitudinal section, on an enlarged scale, of plied to the journals t', in order to prevent the the front end of the rotary head and the adcutters from wearing these journals. The vance cutter mounted thereon. Fig. 7 is a cutters are spaced by interposed washers, as

cross-section in line 7 7, Fig. G. usual, and are held on the sleeves and the Like letters of reference refer to like parts latter on the journals by washers 2 and cot-9 5 45 in the several figures. ter-pins fis, applied to the front ends of the A represents a boiler-tube. journals.

B represents the tubular handle of the 7o represents a rearwardly-projeeting stop cleaner, and Cthe shell or easing, which is seformed on the rear end of each cutter-arm in cured to the front end of the handle. The such a position that it comes in contact with Ico 5o latteris connected at its rear end,(not shown,) the rear portion of the head ,Gr when the deas usual, by a flexible pipe with the steamn sired limit of outward movement of the cutters has been reached. The contact-surfaces of the stop and rotary head are preferably so arranged that the outward movement of the cutters is arrested before the axial line of the cutters becomes parallel with the axial line of the head. This causes the axial lines of the several sets of cutter-disks to `converge forwardly when the cutters are in their outermost position, so that the resistance which the cutters encounter in entering the scale will `tend to swing the front ends of the cutters inwardly. This inward pressure is counteracted by the centrifugal force, which tends to swing the cutters outagainst the scale and holds them to their work. The inwardly-inclined position of the cutters prevents the latter from catching in the scale and being wedged outwardly asv the cleaner is pushed forward through the tube.

L represents the advance cutter, which is secured to the front end of the rotary head, so as to cut into and remove any excessive thickness of scale before the disk cutters enter the same. This cutter is provided with as many outwardly-projecting armsZ as there are pivoted cutter-armsH-three being shown in the drawings. The front face Z' of each of these arms stands parallel with the axis of the rotary head and suiciently in rear of the center line of the adjacent cutter-journal to enable the front portion of such journal to rest against this ilat front face and find a support or abutment on the same as the rotary serrated cutters do their work. The disk cutters stand in rear of these supportingarms,and the front portions of the journals extend forwardly across the flat faces of the supporting-arms far enough to furnish a good support at the front end of the journal in all positions of the pivoted arms on which the disk cutters are mounted. These supporting-arms Z are beveled at the front, the rear face Z2 of each arm being arranged at an acute angle to the lon gitudinal front face, forming a front cutting edge Z3 on each arm. This cutting edge is preferably inclined backwardly from the base to the free end of the arm, as shown in Figs. 1, 4, and 5.

The supporting and cutting arms are mounted on a hollow hub M, which is secured to the front end of the rotaryT head G. The latter is provided at its front end with a reduced cylindrical neck n, Figs. 6 and 7, and the hub M is provided in its rear portion m with a cylindrical bore by which it iits around this neck and against the shoulder formed by the same at the front end of the rotary head. The hub is held against turning on this neck by several longitudinal pins n', which are inserted in registering openings formed, respectively, in the rear portion fm of the hub and in the front portion of the head outside of its neck n. The front portion of the bore of the hub is larger in diameter than the cylindrical bore of the rear portion, forming in the front portion of the hub a cylindrical chamber O, in which are arranged an annular washer P and a circular row of balls p. The washer P lits around the front portion of the arbor F and against the inner side of the front portion of the hub and is placed against the rear portion of the hub to prevent the pins n from leaving their sockets. The balls p are placed against the front side of the washer and are held in place by a cap Q, which may enter the cavity of the hub, as shown. This cap is held in place by a screw-nut q, applied to the front end of the arbor, and by bearing against the balls holds the hub and the head G on the arbor. These balls relieve the forward thrust of the rotary head. The hub M and its arms Z are preferably formed in one piece of steel by dropforging.

The spider composed of the hub M and arms Z forms a back support for the front ends of the cutter-journals and also an advance cutter, which clears away any unusual thickness of scale before the disk cutters enter the same and relieves the disk cutters of that part of the work.

I claim as my invention- '1. The combination with the rotary head,

of longitudinal arms pivoted at'their rear.

ends to said head and free at their front ends, to swing at their front ends toward and from the axis of said head, longitudinal journals lformed on the front portions of said arms,

disk cutters mounted on said journals, which latter project forwardly beyond said cutters, and a spider which is secured to said head in front of said disk cutters and which has outwardly-proj ectin g arms constructed with lon gitudinal front faces against which said journals rest loosely in front of said cutters and on which said journals move freely as the arms swing in and out, substantially as set forth.

2. The combination with the rotary head, of longitudinal arms pivoted at their rear ends to said head to swing at their front ends toward and from the same and having longitudinal journals, disk cutters mounted on said journals, and a spider mounted on the front portion of said head and having its outwardly-projecting arms provided with cutting edges for removing the excess of scale in advance of the disk cutters, substantially as set forth.

3. The combination with the rotary head, of longitudinal arms pivoted at their rear ends to said head and free at their front ends, disk cutters journaled on said arms, and outwardly-projectiug spider-arms secured to said head in front of said disk cutters, said spiderarms forming back supports for said longitudinal arms and having cutting edges for removing scale in advance of the disk cutters, substantially as set forth.

4. The combination with the rotary head, of longitudinal arms pivoted at their rear ends to said head to swing at their front ends toward and from the same and having longitudinal journals, disk cutters mounted on said journals, and a spider mounted on the IOO IIO

ITS

front portion of said head and having its out* wardiy-projeoting arms provided With longitudinal faces which form back supports for the front portions of said journals and also With cutting edges which remove the excess of seaie in advance of the disk cutters, substantially as set forth.

The combination with the stationary arbor, of a rotary head mounted thereon and provided at its front end with a reduced neck, a spider having its hub tted around said neck and provided in its front portion with an enlarged bore or Chamber, a longitudinal coupling-pin arranged in sockets formed in the rear portion of said hub and the front portion of said head, a Washer arranged in the enlarged bore of the hub against the front end of said pin, antifrietion-balls arranged in said bore against said Washer, and a cap whereby said balls are heid in said chamber and the hub is held on the arbor, substantially as set forth.

Vitness my hand this 24th day of Febrw ary, 1899.

THOMAS J HART. Vitnesses:

EDWARD WILHELM, ELLA R. DEAN.