US717344A - Machine for cutting, expanding, and beading tubes or flues. - Google Patents

Description

no. `7|7,344. Patented Dec. so, |902.

J. cAnmcHAl-:L

IIIGHINE FU-R CUTTING, EXPANDING, AND BEADING TUBESDB FLUES.

(application med me. 11, 1901.)

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UNITED STATES PATENTy OFFICE. l

JOHN OARMIOHAEL, OF FRANKLIN, WASHINGTON..

MACHINE FOR CUTTING, EXPANDING, AND BEADlNG TUBES 0R FLUES.

SPECIFICATION forming part of Letters Patent No. 717,344, dated December 30, 1902. Application filed December 11, 1901. Serial No. 85,429. (No model.)

.To all wiz/om, t may concern:

Be it known that I, JOHN CARMICHAEL, a citizen of the United States, and a resident of Franklin, in the county of King and State of Washington, have invented a new and Improved Machine for Cutting, Expanding, and Beading Tubes or Flues, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved tube cutting, expanding, and beading machine Which is simple and durable in construction, readily applied and fastened in position on a boiler, and conveniently operated to permit of cutting a tube to the proper length for beading or to out an old tube for removal from the boiler, to expand the ilue for setting it iirmly in the tube-sheet, and to bead the end of the tube to securely hold the same in position in the boiler.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is' represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure lis a sectional side elevation of the improvement as applied. Fig. 2 is an enlarged transverse section of the same on the line 2 2 of Fig. l.` Fig. 3 is au enlarged sectional elevation of one of the expanding-rollers and its bearing. Fig. 4 isa side elevation of one of the iiaring rollers and its bearing. Fig. 5 is an enlarged sectional side elevation of the beader as applied. Fig. 6 is an enlarged transverse section of the fastening device for the frame or support, the section being on the line 6 6 of Fig. l; and Fig. 7 is an enlarged end elevation of the barrel-bearing.

The frame or snpportA of the machine is provided with a fastening device Vfor securing the frame in an operative position on the front of a fluesheet B, and this fastening device engages a iiue B or an opening in theiuesheet while the expander, cutter, or beader is operating on another tube or iue B2, as will be readily understood by referencev to Fig. l. The fastening device consists, essentially, of a plurality of blocks C, mounted to slide radially in bearings on a tubular extension A it is desired to do so.

of the frame` A, and the inner ends of the said blocks C engage a tapering mandrel C', connected at its outer or base end with a screw-rod C2, screwing in a nut O2, held on the frame or support A, the outer end of the screw-rod being provided with a hand-Wheel C4 to permit of conveniently turning the screw-rod to screw the same inwardor outward in the nut C2, according to the direction in which the hand-wheel O4is turned. When the screw-rod O2 is screwed inwardly, the inandrel O' is moved inwardly and centrally in the fine B, so as to push the blocks C outward to cause the outer toothed ends thereof to move into firm contact With the inner surface of the flue B' to securely hold the extension A and the frame A in position on the boiler. When it is desired to remove the device from the boiler, the screw-rod O2 is caused to move outward to disengage the blocks O from the flue B' to permit the opera-4 tor to remove the frame from the boiler.

YIn order to cut off, expand, or flange the flue B2, I provide a barrel D, mounted to turn in a bearing E, havingan inwardly-extending flange E', adapted to rest on the fine-sheet B, the barrel D being held against inward movement on the said bearing E by a collar D', arranged on the outer end of the barrel and abutting against the outer face of the bearing E, as plainly indicated in Fig. l. The upper end of the bearing E is connected with a frame part'A2,l pivoted at A3 on a vertical pivot to the main frame A to permit of swinging the frame part A2 to one side whenever The pivoted part A2 of the frame is provided with a hook A5 for engagingthe bearing E, as shown. In the barrel D are formed longitudinal slots or bearings for tapering blocks F to slide radially in land out, (see Fig. 2,) and in each of the said blocks F is removably journaled a circular cutter G, adapted to engage theflue B2 at the inside, so that when the barrel is turned and with it the blocks F and the latter are forced outwardly the cutters G cutthe flue B2. When -it is desired to expand the flue, rollers G are IOO tum of a cone having concave sides. The same blocks may be used for carrying the cutters and rollers; but I preferably employ a separate block for each. The journals of the cutters G and the rollers Gl and G2 are held in position in the blocks F by flat springs L, which permit yielding of the said cutters and rollers, and the blocks F are similarly pressed on their outer faces by springs L', secured to the peripheral surface of the barrel D. The inner sides of the several blocks F rest on the sides of a tapering mandrel H, polygonal in cross-section, as plainly shown in Fig. 2, so

lthat when the mandrel is turned a rotary motion is given to the barrel D by the blocks F, turning with the mandrel H,and consequently the cutters G and rollers G or G2 travel transversely on the inside of the flue B2. Vhen the mandrel H is moved inwardly, the blocks F are pushed outwardly, so as to feed the cutters G and rollers G' and G2 outwardly to properly cut, expand, or iiange the iiue B2. In order to give the mandrel H the desired rotary motion for the purpose described, I provide a gear-wheel I, turning with the mandrel H and sliding on the outer cylindrical portion thereof, the said gear-wheel I being for the purpose provided with a suitable key engaging a corresponding keyway arranged longitudinally in the cylindrical outer p0rtion of the mandrel H. The gear-wheel I is held against longitudinal movement by lugs A4 on the frame part A2, and the said gearwheel is in mesh with a gear-wheel J, secured on a shaft J', journaled in suitable bearings on the main frame A. On the outer end of the shaft J' is secured a crank-arm J2, adapted to be turned by the operator to rotate the shaft J' and gear-wheel J, so that the latter imparts a rotary motion to the gear-wheel I, which in turn turns the mandrel H for the purpose above described. In order to feed the Inandrel H inward, and thus move the blocks F outwardly, as before stated, I connect the outer end of the mandrel H by a pin K with a screw-rod K, screwing in a nut A5, arranged on the frame part A2. On the outer end of the screw-rod K is secured a hand-wheel K2, under the control of the operator, for screwing the screw-rod K inward to move the mandrel H in the corresponding direction for forcing the blocks F outward, as above stated. Each block F is preferably formed with a number of bearings to permit of using the same cutters G for cutting off pipes or tubes within the boiler when the same are to be removed or cutting off the ends of the tubes that project beyond the tube-sheet preparatory to beading the same, it being understood that for cutting off tubes within the boiler the cutters are placed in the bearings at the inner ends of the blocks F and in the bearings at the outer ends of the blocks when the ends of the tubes are to be out oiI".

When it is desired to bead the projecting end of the iiue B2, the following arrangement is made, special reference being had to Fig.

5. The mandrel H', which is of uniform diameter, is connected with the screw-rod K by the pin K and also carries a gear-wheel I. The innerend of the mandrel H abuts against the iianges O of blocks O, mounted in the slots or bearings of the barrel D and carrying at the forward end beading-rollers P and at the inner end guide-rollers Q. The beading-rollers P have their axes extending radially relative to the mandrel H', while the guide-rollers Q have their axes extending parallel with the axes of the barrel D and mandrel H'. It is understood that when the beader is used and the screw-rod K is screwed inwardly the mandrel H pushes the blocks O in a like direction, so as to rmly engage the beading-rollers P with the outer end of the tube'or flue to bead the same in the proper manner. By turning the crank-arm J2 the mandrel H' is rotated, and with it the barrel D, to bring the beading-rollers in contact with the outer end of the flue. The collar D' holds the blocks O against outward Inovement in the barrel D.

From the foregoing it will be evident that the machine is very simple and durable in construction, and by the use of the fastening device described the machine can be readily secured in place to bring the cutter, expander, and beader in proper relation to the flue to be treated.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. A machine for cutting, expanding and beading tubes or ilues, comprising a supporting-frame, a slotted barrel mounted to turn, sliding cutter or roller carrying blocks mounted in the slots of the barrel, a longitudinallysliding mandrel for engaging the said blocks, a gear wheel through which the mandrel slides, means for holding the gear-wheel from longitudinal movement, and a shaft mounted in the frame and provided at its outer end with means for operating it and at its inner end with a gear-wheel meshing with the firstnamed gear-wheel, as set forth.

2. A machine for cutting, expanding and beading tubes or iiues, comprising a frame, means for securing the frame to a boiler, a bearing adapted to rest against a boiler, a slotted barrel mounted to turn in said bearing, sliding cutter or roller carrying blocks IOO IIO

IZO

in the slots of the barrel, a mandrel engaging the said blocks, means engaging the mandrel for moving it longitudinally,a gear-wheel through which the mandrel slides, means carried by the frame for holding the gear-wheel from longitudinal movement on the mandrel, and a shaft mounted in the frame, and provided at its outer end with means for turning it and atits inner end with a gear-wheel meshing with the gear-wheel on the mandrel, as set forth.

3. A machine for cutting, expanding and beading tubes or flues, comprising a frame having a pivoted member, means for securing the frame to a boiler, a bearing adapted to engage a boiler and with which the pivoted member of the frame engages, a slotted barrel mounted in the bearing, sliding cutter or roller carrying blocks mounted to slide in the slots of the barrel,a mandrelengaging the` said blocks, a gear-wheel through which the mandrel slides, lugs carried by the pivoted member of the frame and between which the gear-wheel extends, a screw mounted in the pivoted member of the frame and engaging the end of the mandrel, and a shaft mounted in the frame and provided at its outer end with a crank-handle and at its inner end with a gear-wheel meshing with the gear-wheel on the mandrel, as set forth.

4. A machine for cutting, expanding and beading tubes or ues, comprising a mandrel for rotating the cutting-tools and for feeding the same in contact with the tube or flue, a gear-wheel mounted to turn with the mandrel and slidably connected therewith, means for holding the gear-wheel against longitudinal movement on the mandrel, a manuallycontrolled shaft having a gear-wheel in mesh with the mandrel gear-Wheel, and a screwrod screwing in a 'xed nut and engaging the said mandrel, as set forth.

5. In a machine for cutting, expanding and beadingflues or tubes, aframe having a member pivoted to swing laterally and provided with spaced lugs, a bearing adapted to rest against a boiler and with which the free end of the pivoted member of the frame engages, a barrel `carrying cutters or rollers and mounted in the bearing, a mandrel for forcing the cutters or rollers out of the barrel, a screw mounted in the pivoted member of the frame' for moving the mandrel longitudinally,a gearwheel through which the mandrel slides, said gear-wheel projecting between the lugs of the pivoted member of the frame, a gear-wheel mounted in the frame and `meshing with the first-named gear-wheel, and means for operating the last-named gear-wheel, as set forth. 6. In a machine for cutting, expanding and beading l'lues or tubes, the combination with a slotted barrel mounted to turn, sliding cutter or roller carrying blocks mounted in the slots of the barrel, a sliding mandrel, and

means for operating the mandrel, of a frame in which the mandrel and its operating means are mounted provided with a tubular slotted extension, blocks mounted in the extension and projecting through the slots of the same, a mandrel for forcing the blocks outward, a nut carried by the frame, and a screw-rod mounted in the nut and connected with the outer vend of the mandrel, as set forth.

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

JOHN CARMIGHAEL.

Witnesses:

F. M. TUCKER, LESTER WARNOCK.

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