US1162681A - Beading-tool for boiler-tubes. - Google Patents

Description

H. E. BUSH.

BEADING TOOL FOR BOILER TUBES.

APPLICATION HLED JUNE 9. 1915.

1 ,1 62,681. Patented Nov. 30, 1915.

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HOWARD E. BUSH, 0F JACKSON, MICHIGAN,

SHERWOOD AND ONE-THIRD T0 PETER MICHIGAN.

OFFKQE,

ASSIGNOR OF ONE-THIRD TO INEZ EVA EDWARD MoINTOSI-I, OF KALAMAZOO,

BEADINGr-TOOL FOR BOILER-TUBES.

Specification of Letters Patent.

Patented Nov. 30, 1915.

Application filed June 9, 1915. Serial No. 33,069.

To all whom it may concern:

Be it known that I, HOWARD E. BUSH, a citizen of the United States, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Beading-Tools for Boiler-Tubes, of which the following is a specification.

This invention contemplates an improved beading tool for boiler tubes and has as its primary object to provide a device of this character so constructed that the tool cannot be applied to the work in other than the proper manner and wherein the tool, when so applied, will be properly guided to engage the work, to thus produce a tool which may be employed by personseven though unskilled in the manipulation thereof.

The invention has as a further object to provide a tool so formed that it will be impossible when the tool is applied to a boiler tube to calk the tube or fine out of the tube sheet and will also be impossible to cut the sheet.

A still further object of the invention is to provide a tool of this character so formed that, in use, the tool, when applied to one end of the tube, cannot be accidentally forced into the tube to either become wedged therein or to pass entirely through the tube to possibly injure workmen at the opposite end thereof.

Other and incidental objects will appear as the description proceeds and in the drawings wherein I have illustrated the preferred embodiment of the invention and wherein similar reference numerals designate corresponding parts throughout the several views, Figure 1 is a side elevation showing my improved tool applied to a conventional type of boiler tube and sheet which is illustrated in section, and Fig. 2 is a perspective view of the tool.

Referring now more particularly to the drawings, my improved tool includes a preferably hexagonal anvil shank 10 which is reduced at one end as at 11, to receive a power hammer conventionally shown in Fig. 1 of the drawings at 12. The shank 10 may, of course, be of any desired length and at its extremity opposite the reduced portion 11, is provided with a longitudinally extending laterally directed arm or toe 13.

The shank 10 as will be observed, is reduced to provide the toe 13, which is preferably longitudinally curved throughout its length. Formed on the shank 10, at the juncture of the toe 13 therewith and arranged contiguous to the convex side of the toe, 1s a laterally directed shoulder or heel 14 whlch extends forwardly and laterally relative to the shank and in a direction opposite to the toe 13. The shank 10 is also somewhat reduced to provide the shoulder or heel 1 1 which is formed with an inner concave working face 15, the face 15 merging gradually at one extremity thereof, into the convex face of the toe 13. It will thus be seen that the heel 1%, in conjunction with the concave working face 15, constitutes the beading member of the tool. The terminal Working face 16 of the toe is arranged substantially parallel to the longitudinal axis of the shank 10 while the outer end face 17 of the shoulder or heel l4 slopes laterally and rearwardly away from the toe.

' Referring now more particularly to Fig. 1 of the drawings, I have shown my improved tool applied to a conventional type of boiler tube or flue 16 having one end thereof extending through an ordinary flue sheet 17 The tool is engaged with the tube 16, with the toe 13 thereof extending Within the tube to engage the wall thereof upon one side of the tube and with the shoulder or toe 14 engaging over the adjacent end edge of the tube upon the side thereof opposite the point of engagement of the toe 13. The power may then be applied to the tool in the usual manner to cause the working face 15 of the shoulder or heel 141 to overturn or form the bead upon the adj acent end of the tube, the bead being conventionally illustrated at 18.

articular attention is now directed to the fact that the tool can only be applied to the work with the toe 13 extending within the tube to engage the wall thereof as shown in Fig. 1 of the drawings. Consequently, persons even though unskilled in the use of the tool, cannot employ it in use, in other than the proper manner. Furthermore, it will be seen that the toe 13 is adapted to guide the tool as the heel 14 is passed cir' cumferentially around the adj acent end edge of the tube to form the head 18, so that the head will be uniform, while the shoulder 14 will bear laterally over the adjacent end edge of the tube to prevent the tube from being calked out of the sheet, or in other words, to prevent the adjacent end of the tube from being forced out of the opening in the flue sheet 17. It will be observed that, when the beading member is in operative position with the toe in contact with the inner wall of the flue, the anvil shankwill be in parallelism with the axis of the flue and thus permit a direct blow from the hammer to be transmitted through the shank to the heading member. In this connection, it is to be observed that the face 17 of the shoulder or heel ll is so arranged that when the tool is applied to the work, the said face will slope away from the flue sheet making it impossible, owing to the engagement of the toe 13 within the tube, to tilt the tool from the horizontal to a position where the said face of the shoulder will engage the flue sheet to either cut the sheet or force the sheet under the bead to form a bur such as would make it impossible to form a tight joint between'the tube and the sheet and consequently result in leakage.

As is well known, beading tools as now upon the market are of such nature that, when applied to the work, they may be so held as tonot only cut the flue sheet but also act to force the sheet under the head of the tube or flue to form a bur which is very detrimental to the flue since, when this bur is once formed, it then becomes impossible to secure the tube or flue sufficiently tight within the opening in the flue sheet to prevent leakage. This is one of the worst disadvantages experienced with beading tools as now in common use and the important advantages of the present invention will, therefore, be readily appreciated since my improved tool will not only prevent the cutting of the flue sheet, thereby prolonging the wear of the sheet, but is also so formed that it will be impossible to drive the sheet under the head of the flue to form a bur Copies of this patent may be obtained for which inevitably results in leakage. Furthermore, beading tools as now in common "use, have a tendency to draw out .on the: flue making it thinner at the sheet'which also consequently results in leakage. Moreover, this drawing out of the flue also leaves a ragged edge on the bead which has to be trimmed at regular periods. These undesirable features are also overcome in the present invention in that the tool cannot be applied to the work in other than the proper manner.-

From the foregoing description, it will be seen that owing to the disposition of the toe l3 and heel 14L upon the anvil shank'of the tool, it will be impossible for theltool to become wedged within the flue or to pass entirely through the tube or flue to cause possible injury to persons working upon the opposite end of the tube.

vHaving thus described my invention, what I claim and desire to secure by Letters Patent is 1. A tool of the class described comprising ananvil shankhaving a beading member and a toe laterally projecting from the heading member and adapted, when inserted into a flue, to engage with itstoe the inner wall of the flue diametrically opposite the point of application of the beading mem-, her when the latter is in operative position.

2. A tool ofthe class described comprising an anvil. shank having a beading memher and a toe laterally projecting from the heading member and adapted, when in-- sorted into a flue, to engage with its toe the inner wall of the flue diametrically opposite the point of application of the beading member when the anvil shank is in parallelism with the axis of theflue and the beading member is in operative position;

In testimony whereof I aflix' my signatu e.

HOWARD E, BUSH. [L. s]

Washington, D. 0'1"

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