Tube expanding, beading, and cutting tool.

Application filed August 19,1903. Serial No. 169,999. (No model.)

To all whom it may concern:

Be it known that I, Henry G. Uykken, a citizen of the United States, and a resident of · Grafton, in the county of Walsh and State of: 5 North Dakota, have invented a new and Improved Tube Expanding, Beading, and Cut-, ting Tool, of which, the following is a full, clear, and exact description.

The object of this invention is to provide io novel details of construction for a tool of the: character indicated which adapts it for convenient and. reliable service, facilitates the exchange of parts to effect the expansion, beading, or cutting off 'of. a flue or tube while in 15 place, and affords a simple practical implement at a moderate cost.

The invention consists in the novel construction and combination of parts, as is here-: inafter described, and defined in the appended 2o claims.

Reference is to be had to the accompanying^;drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side view of the im-^:proved tool applied as a beading implement.

Fig. 2 is a transverse sectional view substantially on the line 2 2 in Fig. 1. Fig. 3 is an end view of. the device seen in direction 30 of the arrow x in Fig. 1’. Fig. 4 is a transverse sectional view substantially on the line 4 4 in Fig. 1. Fig. 5 is a sectional side view of a cutter-supporting bracket-block and a rotary cutter thereon; and Fig. 6 is a similar 35 view with Fig. 5, but showing an expandingroller mounted on the bracket-block in place; of the cutter.

The improved tool, that is adapted to serve the purpose of a tube-cutter, a tube-expander, 4° and a tube-beader, as occasion may require, is extremely simple, strong, light, convenient to place and remove while in use, and adapted for service in close proximity to the sides of a fire-box or smoke-box or a stationary or 45 locomotive boiler, as will appear from the. subjoined description. . :

The body portion 10 of-the implement is a cylindrical mandrel of proper dimensions for effective service, an axial bore co extending 50 therethrough, as shown in Fig. 1.

Upon one end of the mandrel 10, that may be somewhat reduced in diameter as compared with the middle portion thereof, a preferably hexagonal formation 10^a is produced, it being understood that any other angular 55 peripheral form may be given to this integral portion of the mandrel which may be adapt- . ed for engagement therewith of a suitable wrench, (not shown,) whereby the mandrel 10 may be rotated. ·.:... ' 60

Upon the exterior of the mandrel 10, adjacent to the angular formation 10^a, a thread 10^b is formed, and upon said thread an interiorly-threaded hub 11 is screwed and adapted for adjustment along the same. 65

A cupped flange 12 is mounted upon a slightly-reduced peripheral portion of the hub 11, abutting upon a radial shoulder b, that is produced by the diametrical reduction of the hub, and said flange is held in place by the 70 set-screw c, as indicated in Fig. 1. In the wall of the hollow mandrel 10 three rectangular openings d of equal size are formed, these apertures being equally spaced apart.

In the openings d three sets of bracket-. 75 blocks 13, 13^a, and 13^b are fitted, each set of these similar blocks, being designed as supports for three beading-rollers 14, a like number of expanding-rollers 15, and asimilar number of cutter-wheels 16, respectively. 80

Each of the blocks 13 is transversely recessed in its upper side, leaving end. walls standing thereon, which walls are oppositely perforated to receive the journal ends of a beading-roller 14, said rollers, of the usual or 85 any preferred form, being held to rotate in the recesses of the blocks, as indicated, in Figs. 1 and 2.

A coniform wedge 17 is preferably formed integral with an elongated adjusting-screw 9⁰17^a and is axially coincident therewith, the smaller end of the wedge joining one end of the screw, as shown in Fig. 1.

The coniform wedge 17 and adjusting-screw

17“ are introduced within the bore a of the 95 . mandrel 10 and have such a relative position as will permit the bracket-blocks 13 to seat upon the smaller portion of said wedge, and to adapt the blocks 13 to have proper bearing on the wedge the contacting surfaces of said ,100

761,518 blocks are sloped, so as to conform with the taper of the coniform wedge, as shown for one block in Fig. 1.

Upon the end portion of the adjusting-screw 5 17^a which projects exterior of the mandrel 10 a washer-block 18 is loosely mounted, said block being adapted to loosely hold in recesses formed in one side face thereof a . proper number of bearing-balls e, that project τ o sufficiently to have contact with the adjacent end of the mandrel.

An adjusting-nut 19 is screwed upon the portion of the screw 17^a that extends beyond the plain surface of the block 18 and in serv15 ice has contact with said surface, so that the block 18 serves as an antifriction-washer for the nut.

At the opposite end of the mandrel 10, which is somewhat reduced in diameter, a sleeve 20 20 is mounted and held in place by the set-screw g. A set of three spring keeper-arms 20^aproject from one end of the sleeve 20 toward the openings d and are equally spaced apart, said arms loosely occupying longitudinal 25 channels formed in the periphery of the mandrel 10.

As shown for one block 13, the spring keeper-arms have bearing contact upon the upper surfaces of said blocks, respectively, 30 thus insuring a contact of the latter with the coniform wedge 17.

In Fig. 5 the bracket-block 13^b shown is the counterpart of the block 13 (shown in Figs. 1. and 2) and is one of a set of three bracket35 blocks which rotatably support three similar cutters 16, that are circular and V-shaped in section, as is usual in this style of tube-cutters, and it will be seen that the blocks 13 may be readily removed by a longitudinal dis40 placement of the keeper-arms 20^a and the blocks 13^b be introduced within the openings d for service.

In Fig. 6 is shown one of a set of three expanding-rollers 15, rotatably supported on a 45 bracket - block 13^a, similar to the bracketblocks 13 13^b, these expanding-rollers having either a cylindrical form, as shown, or any other peripheral shape that may be best adapted for their service.

5° In Fig. 1 is represented an application of the improved tool to form a bead upon a boilertube, A representing the tube and B the flue sheet, through which the end of the tube or flue is inserted and wherein said tube end is 55 to be affixed by use of the improvement.

As shown, the mandrel 10 is introduced within the tube A, the latter being in proper position in a perforation in the tube or flue sheet B, the degree of insertion being accurately oo determined by contact of the true edge of the cupped flange 12 upon the exterior surface of the tube or fluesheetB, anditwill beapparent that by an adjustment of the hub 11 on the threaded body of the mandrel 10 tile bead65 ing-rollers 14 may be exactly located within the tube A to form a projecting bead on said tube at the inner side of the flue or tube sheet B.

In operation, assuming that the parts of the tool are arranged for forming a bead on the 70 tube A, the workman applies a suitable ivrench upon the nut 19 and rotates it, so as to pull the coniform wedge 17 toward the outer end of the mandrel, thus causing pressure on the inner ends of the bracket-blocks 13. Λ wrench 75 is now placed upon the angular formation 10^aand the mandrel 10 is rotated therewith, which will cause the beading-rollers 14 to indent the inner surface of the tube A. After a few turning movements of the mandrel 10 the wrench 80 is again applied upon the adjusting-nut 19 and the latter is turned in a proper direction to again pull upon the coniform wedge 17, forcing the rollers 14 again into contact with the flue or tube A, and thus adapt the subse- 85 quent rotation of the mandrel 10 by means of a wrench applied to the angular formation 10^a to produce a bead upon the exterior of the tube A in contact with the inner surface of the sheet B. 90

It will be seen that by employment of the cupped flange 12, held in position by the adjustable hub-block 11, and the provision of the antifriction-washer 18 the frictional resistance to. a turning movement of the implc- 95 ment, that in ordinary tools of its class is great, may be overcome with ease and the work lightened correspondingly.

After the bead is formed the tool may be withdrawn from the tube A by first turning 100 the nut 19 in an opposite direction, so as to permit the insertion of the coniform wedge 17 farther into the bore a of the mandrel, which will dispose the bracket-blocks 13 opposite the smallest portion of the wedge and permit i°5 the spring-arms 20^a to press the beading-rollers 14 out of the groove they have formed in the tube, and thus release the mandrel for its withdrawal from the tube A. A removal of the beading-rollers 14 may now be effected, as ¹¹⁰before mentioned, to permit the substitution of the expanding-rollers 15 therefor, which when in position on the mandrel 10 may be disposed opposite the surface of the tube A that is opposite the wall of the circular orifice 115 occupied by the end of the said tube, this adjustment being readily effected by screwing the hub 11 farther on the mandrel, and thus reducing the distance of the rollers 15 therefrom. 120

When the set of expanding-rollers, one of which is shown in Fig. 6, are in position, they may be forced into engagement with the inner surface of the tube A by turning the screw 17^a so as to draw upon the wedge 17, r°5 whereupon a rotation of the mandrel 10 will obviously expand the tube by rolling contact of the rollers 15 therewith.

In case the tool is to be employed for cutting off flues or tubes while in position within 130

761 a boiler or the like it is only necessary to substitute the bracket-blocks 13^b for the bracketblocks 13 or 13^a if the latter occupy the openings d, which will place the cutters 16 in po5 sition for use, the cutters being embedded in the tube near the flue-sheet B by a longitudinal adjustment of the coniform wedge 17, as has already been explained for the outward movement of the beading-rollers and expand io ing-rollers, the circular cutters operating to cutoff the tube when the mandrel 10 is rotated and the nut 19 turned at intervals to draw upon the coniform' wedge 17.

It will be obvious that as there are no pro15 jections on the tool which will interfere with the side wall of a boiler fire-box or smoke-box flues or tubes may be “set” or cut off for removal along the outer rows of the same as positioned in the flue-sheets and the improved 20 implement be employed for such work in a rapid easy manner.