US910183A - Boiler-cleaner. - Google Patents

Description

A. H. DREIJER &: F. HAIGHT.

BOILER CLEANER.

APPLICATION FILED 00110, 1905.

910,183. Patented Jan. 19, 1909.

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A. H.,DREIJER & IE. HAIGHT.

BOILER CLEANER. APPLICATION FILED 00T.1o, n05.

Patented Jan. 19, 1909.

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A. H. DREIJER & F. HAIGHT.

BOILER CLEANER.

APPLICATION FILED 00110, 1905.

Patented Jan. 19, 1909.

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By 1/26/1170 ey UNITED STATES PATENT OFFICE.

ANDREW H. DREIJER, OF BROOKLYN, NEW YORK, AND FREDERICK HAIGHT, 'OF

SPARTANBURG, SOUTH CAROLINA.

BOILER-CLEANER Specification of Letters Patent.

Patented Jan. 19, 1909.

To all whom it mag concern:

Be it known that we, ANDREW H. DREIJER,-

a citizen of the United States, residing in Brooklyn, State of New York, and FRED- ERICK HAIGHT, a citizen of the United States, and residing in Spartanburg, State of South Carolina, have invented certain new and useful Improvements in Boiler-Cleaners, of which the following is a specification.

Our present invention relates to cleaners for the tubes of water tube steam boilers and has for its object the automatic adjustment of cutting knives and rollers so that they may by centrifugal action fly out against the walls of the tube during the rotation of the spindle or shaft carrying them.

These and other details, and objects of our invention are more fully described in the following specification and set forth' in the appended claims.

In the drawings accompanying this specification and forming a part thereof like reference characters are used to designate similar parts.

Figure 1 is a side view of the cleaner, with certain parts omitted, Fig. 2 is a longitudinal sectional view of same, Fig. 3 is a rear view, Fig. 4 is a similar view showing the cutters thrown out as in operation, Fig. 5 is a front view of the cleaner, Fig. 6 is a side 'viewof the frame which carries the rotating shaft, Fig. 7 is an enlarged longitudinal sectional view through a part of same and the driving pulley, Fig. 8 is a view near the end of the drivin shaft showing the centering device, Fig. 9 1s a cross section of a tube showing the centering device from one end, Fig. 10 illustrates a coupling means for the sections of the driving shaft, Fig. 11 shows a modified means of carrying the driving pulley, Figs. 12 and 13 show a modified means for securing the carryin frame to the boiler, Fig. 14 is a preferred orm of coupling for the shaft sections, Fig. 15 is a modified form of one of the cleaner heads.

The cleaner, proper, is made up of a spindle 1 with threaded ends 2, and squared collars3 with flanges 4; one threaded end carrying a sleeve 5 to which is coupled the driving shaft and the forward threaded end being providednwith a pointed head 6. This head 6 is pyramidal and preferably three sided with the sides of the base so cut away that they are tangential with the spindle and to these tangential sides are secured cutting plates 7 by means of set screws 8; the front edges of the plates having serrations or teeth to cut up scales or other obstructions which may impede the movement of the cleaner through the tube or flue.

The collars 3 carry heads9 and 10 which are held in place thereon and against the flanges 4 by the pointed head 6 and the couplin 5 respectively, and these heads are prefera ly triangularly shaped and are perforated at each angle to receive the ends of a shaft 11 whose forward end is tapered as at 12 to fit the countersunk holes in head 9 and are retained in their perforations by means of a plate 13 which covers the tapered ends and is itself secured on the spindle 1 by means 0f,-and between the heads 6 and 9. These shafts 11 loosely carry a number of toothed cutters 14, interposed between which are sleeves 15 on the shaft and adapted to separate the cutters at regular distances from each other, and in the outer ends. of these cutters are uniform perforations which are designed to carry shafts 16 and on which shafts are secured, free to rotate, the toothed cutting disks 17. The disks 17 have adjacent to them on each side, washers 18 which also separate them from the cutters 14, and the outer or forward ends of the shafts 16 enter perforations in a plate 19 and pins 20 prevent their displacement therefrom; and plate 19 being located on the spindle near one of the heads. These forward ends of the shafts 16 are thus retained in their rela- \Vhen revolving at a high speed the centrifugalaction throws the cutters 14 with the shafts 16 and disks l7 outward to a greater or less degree, the forward cutters and disks being restricted in their movement by the plate 19 each shaft 16 assumes a position at an acute angle to the spindle 1 and the disks at the rear of the cleaner describing a larger circle about the spindle head than those nearer the front, the cleaner thus performing its function with the tube or flue to a greater extent as it moves inward. The free ends of the shafts 16 are provided with washers 21 and pins 22 to retain the cutting disks. thereon.

Referring to Figs. 10 and 14, it will be reduced to fit the boiler tube and which carto force the collar 43 against the ta ered around so as to permit the bolt 46 to engage.

one of these sections is provided along its threaded end of the sleeve 31 and clamping ducing the cleaner into the boiler tube, and

length with a groove24 to receive the end 25 of one or more keys 28, which fill the double function of a means for securing the pulley 27 to the sleeve 26 and permittin the longitudinal movement of the sha through said sleeve and at the same time causing the shaft to rotate with the sleeve 1 and pulley. A collar 29 is securedto the other end of sleeve by a set screw 30, the whole bein adapted to rotate freely ins an. immova le sleeve 31 which is rigidly clamped in a slotted arm 32 by its annular shoulder 33 and a nut 34 working on the it at any desired point within the slot 35 of the arm 32. Sleeve 31 has a removable bushing 31 to be replaced when worn. On the outer end of the shaft 23 are secured two collars 36 and 37 by means of set screws or other suitable means and between these collars and free to rotate independently of the shaft is a cross bar 38 whose ends are formed into handles to operate the cleaner and advance or retract it in the flue, or tube, either preparatory to starting work or while in operation and the shaft is rotating.

The arm 32 is clamped rigidly by mean of its split hub and the set screw 39 to the hollow shaft 40 whose inner end 42 may be lies a tapered sleeve 41 of brass or other soft metal to fit the hole in the header opposite the tube which contains the end 42. A split collar 43 is clamped upon the shaft 40 near the'sleeve 41 and forms a shoulder for the. ring 44 of an arm 45 which is adapted to swing around the shaft and carries at its outer end a bolt 46 having a lateral member 47 which is adapted to enter one of the header openings and have the said lateral member 47 engage its side, the bolt 46 having a nut 48 which adjusts it in the arm and clamps the part 47 against the header so as sleeve 41 and thereby hold the whole securely to the boiler header.

6 showsthe bolt 46 as enteringthe opening in the header, throughwhich the cleaner, shaft 23 is operating, but it is obvious that the arm 45 may be swung ame any other opening in the header or the adj a cent header that may be desired.

In 8 and 9 is shown a centering device on t e shaft 23 in the rear of the cleaner to practically support the shaft at a central point within the tube while the cleaner is' doing its work, and consists of two heads 49 and 50 whose hubs car the shaft and ermit the free rotation 0 same, but are eld against longitudinal movement by the-col lars 51, which are secured to the shaft, the heads being connected by the longitudinal the same up of sections as it is fed into the The preferred coup- 7 tube with the cleaner.

ling of these sections, illustrated in Fig. 14,

is by a male and female coupling, the female coupling 56 receiving the end of shaft sec tion 56 while the male coupling 56 is adapted to enter a sleeve coupling 56, which carries the end of the other shaft section 56 In Fig. 10 is shown a coupling in which the ends of the shaft sections have forked ends 53 and a coupling piece 54 with tongues 55 which enter the space between the members of each forkand a pivot pin passing through each fork and tongue. .On the end of one of these sections is shown a reduced threaded portion 53 which enters the tapped bore of the sleeve 5. x

The shaftv 23 at a point near the driving pulley 27 is provided with an arm 57 having an eye 58 at its outer end for the purpose of attaching suitable hoisting means to same to handle the device when it is desired to locate it on the boiler for operation, adjust the same or remove it when the operation has been completed. Fig. 11 shows a modified form of this handling device in which a fork 59 is clamped to the rigid sleeve 31 by means of a headed bolt 60 in its slotted arm, while its other arm has a perforation which loosely carries the sleeve 26. A device ofthis latter form gives more solidity to the pulley attachment and an eye 61 in said fork 59 provides a means for readily handling same with a suitable hoisting apparatus or other means.

In Fi s. 12 and 13 are shown modified means of securing the shaft 40 to the boiler, and it will be seen that the bolt 62, which is a substitute for bolt 46, is of ordinary construction and is provided with a cross bar 63 to fit over the hole in the-header and be held in adjustment by means of the nut 64.

' When the cleaner is at restit is readily inserted in the tube to be cleaned because the cutters in their normal position lie along the spindlewith their carrying shafts parallel therewith, but when the shaft 23 is put in motion, particularly at-a high rate of speed the cutters fly out and come in contact mechanism to any desired point, and the inner end 42 of the shaft inserted in another hole in the heads to enable the cleaner to treat another tube.

It may be found necessary to limit the outward throw of the disk-carrying shaft 16 and to provide for this contingency the rear head 10 may have a corresponding number of segmental slots 16 to carry the ends of the shafts 16 and permit of their outward movement only as far as the slot permits. The shafts are here shown in their retracted position and the disks in dotted lines.

In the construction and operation of this device various other modifications may suggest themselves without departing from the spirit of our invention.

Having described our invention, what we claim as new and desire to secure by Letters Patent, is

' 1. In combination with a rotating spindle having heads,shafts stationary in regard to said spindle and 'secured in said heads, centrifugall shafts, said cutters having perforations in their outer ends, shafts passing through said perforations, cutting disks carried by said shafts, and means for retaining one end of said shafts while the other end swings free, said means consisting of a perforated plate 'near the spindle head.

2. In a boiler cleaner the combination with a rotating shaft, of a-spindle carried at the end of said shaft, heads carried by the spindle, cutters on one of the heads, longitudinal shafts relatively stationary to the spindle connecting the heads, a series of cutting links swinging on each-shaft and having perforations in their outer ends, shafts passing through the perforations of each serles of links and causing them to swing in unison,

means without the head connectin these shafts at one end while the other. en moves outward to a greater degree, and cutters carried on the-shafts.

3. In a boiler cleaner the combination with a rotating slotted shaft, of a sleeve surrounding the shaft and having a key adapted to operate in the slot to rotate with the shaft and allow its lon itudinal movement through the sleeve, a pul ey secured to the sleeve, a

operated cutters carried by said second sleeve loose on the first and having a collar, means for retaining the second sleeve on the first, a slotted arm adapted to carry the second sleeve, a nut on the latter adapted to adjust and clamp the same in the slot of a rotating shaft, of a sleeve with a pulley on the shaft, means connecting the shaft and the sleeve so that they rotate together but the shaft is free to move longitudinally therein, a shaft with a tapering sleeve, an arm carrying an adjusting bolt to operate in conjunction with the'tapering sleeve to secure the latter shaft to a boiler head,.a slotted arm secured to the outer end of the latter shaft and adapted to carry the rotating shaft and its pulley, means for adjusting the rotating shaft and its pulley in the slot, centrifugallyoperating cutting means at the end of the rotating shaft and centering means on said shaft at the rear of the cutting means.

5. In a boiler cleaner the combination with a rotating shaft, of a spindle secured on the end of said shaft, heads at each end of the spindle and rigidly secured thereto, shafts parallel to the spindle loosely carried bythe heads, a plate secured near one of the heads of the spindle and adapted to retain the shafts, centrifugally operated cutters carried by the shafts, said cutters having perforations in their outer extremities, shafts passing through said perforations, series of cutter disks carried by said shafts,and means,

near the head of the spindle but independent WVitnesses:

H. G. HOSE, JAMEs F. DUHAMEL.

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