US1116205A - Boiler-tube tool. - Google Patents

Description

C. G. BAKER.

BOILER TUBE TOOL.

APPLICATION FILED APR. 3, 1914.

1 1 1 6,205. Patented Nov. 3, 1914.

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G. G. BAKER.

BOILER TUBE TOOL.

APPLICATION FILED APR. 3. 1014.

1, 1 1 6,205. Patented Nov. 3, 1914.

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CHARLES GEORGE BAKER, OF ATCHISON, KANSAS.

BOILER-TUBE TOOL.

Specification of Letters Patent.

Patented Nov. 3, 1914..

Application filed April 3, 1914. Serial N 0. 829,405.

To all whom it may concern Be it known that I, CHARLES Gnonon BAKER, a citizen of the United States, residing at Atchison, in the county of Atchison and State of Kansas, have invented certain new and useful Improvements in Boiler-Tube Tools; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enableothers skilled in the art towhich it appertains to make and use the same.

This invention comprehends certain new and useful improvements in boiler tube tools, and has for its primary object to provide a device of this character which will be of such construction and operation as to expand the flue and form a shoulder around the same inwardly of the headpiece through Which the end of the tube extends and at the same time form a bead upon the outer end of said tube.

Another object is to provide a device of this character in which the parts will be of extremely simple and cheap construction and formed and assembled in such a manner that they may be readily replaced should any such parts become worn or broken.

A still further object of this invention is to construct the device in such a manner that the tube may be expanded, the beads formed upon the outer end thereof, and the shoulder forced outwardly within the boiler, with one operation.

A still further object is to generally improve and simplify the construction and operation of devices of this character and to provide a tool which may be readily adjusted to fines or tubes of various diameters, thereby making it unnecessary to provide a separate tool for each size tube or flue.

lVith these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my in vention, reference is to be had to the following description and accompanying drawings, in which-- Figure 1 is an elevational view of my improved tool, Fig. 2 is a view similar to Fig. 1, with the plunger in the outermost position, Fig. 3 is a longitudinal sectional view through the device, on the. plane of line 3-4? of Fig. 1, Fig. 4 is a plan view of Fig. 3 with the short body section removed, Fig. 5 is a detail elevational view of the plunger, Fig. 6 is a detail elevational view of one of the spreading members, Fig. 7 is a view similar to Fig. 6 and at right angles thereto, Fig. 8 is a detail elevational view of one of the heading members, and Fig. 9 is a fragmentary detail sectional view taken on the plane of line 99 of Fig. 2.

Referring in detail to the drawings by numerals, 1 designates in general the body of the tool which is formed in-two sections numbered 2 and 3, said sections being secured together by a screw 1 or other suitable means extending through the smaller section 3 and into the larger section 2. Each section of the body is of substantially semicircular form in cross section and the section 3 is placed with its flat side against the fiat side of the section 2, thereby providing a body of circular form in cross section. I have shown the section 2 as being solid with the forward end and the section 3 as being shorter than the section 2 and having its forward end engaged with the flat wall of the forward end of section 2, as will be readily understood by referring to the drawings. The inner end of the body 1 is enlarged by forming a wide flange 5 around the same, half of the flange being carried by each of the sections 2 and 3, and said body 1 is provided with a central socket 6 extending inwardly from the inner end thereof, the inner end of the socket being enlarged, as shown at 7, and communicating with the oppositely directed guide slots 8 which open upon opposite sides of the body 1, said guide slots 8 being positioned so that half of each guide slot is formed in each of the sections 2 and 8, thereby making it possible to readily place in position or remove the spreader mombore 9.

The inner walls of the guide slots 8 are curved, as shown at 10, to correspond with the inner convex edges of the spreader members 9, thereby properlyguiding the spreader members 9 and forcing the outer working ends 12 thereof outwardly in opposite directions, as the reduced end 13 of the plunger 14 is forced against the inner ends of said spreader members 9 by means of an air ham- Iner or the like engaged against the outer end of said plunger 14 to force the same in-.

wardly through the socket 6. Outward movement of the spreader members 9 is limited by engagement of the beveled forward ends of the stop shoulders 15, formed upon the upper and lower faces of said spreader members 9, with the stop walls 16 formed adjacent the outer ends of the guide openings 8 by decreasing the size of said openings at their outer ends the enlarged inner end 7 of the socket 6 being adapted to accommodate both the inner ends of the spreader members 9 and the stop shoulders 7 formed upon the upper and lower faces thereof. It will also be understood that the spreader members 9 are preferably tapered toward their outer ends and curved intermediate their ends, as clearly shown in Figs. 1, 6 and 7 of the drawings. i

It will be understood that when the smaller portion of the body 1 is inserted in the end of a flue or tube to be expanded and headed and to have a shoulder formed adjacent its end and inwardly of the boiler sheet through which the tube is engaged by forcing a portion of said tube or flue outwardly, the spreader members 9 are in their innermost position, the outer working ends 12 thereof being flush with the smaller portion of the body 1, and the plunger 14c being in the position shown in Fig. 2. It will also be understood that the bead forming members 17, secured in the forward portion of the bead or flange 5 of the body 1, are properly adjusted, according to the diameter of the fine or tube, and when said tool is placed in position, the end of the tube or flue rests upon the inclined faces 18 of said beading members 17, and as the plunger 14: is driven inwardly to force outwardly the spreader members 9 and cause said spreader members to form the desired shoulder inwardly of the boiler sheet or wall through which the end of the tube or flue extends, by forcing a por tion of said tube or flue outwardly, the body 1 of the tube will be forced to move inwardly, thereby forcing the beading members 17 against the end of the flue or tube and causing said end of the flue or tube to turn outwardly and thereby form the bead, outwardly of the sheet or other member through which said tube or flue is engaged, owing to the concave recesses 19 at the upper ends of the inclined faces 18 of said beading members 17. The edge of the bead will be bent backand pressed against the outer face of the sheet or other member through which the end of the tube or flue extends, by means of the molding point 20 projecting forwardly from the body of the beading member 17, at the outer edge of the recesses 19, it being understood that the tool is rotated during the operation of expanding the tube, forming the bead at the outer end thereof and forcing outwardly the shoulder inwardly of the member through which said tube projects.

It will be understood that the bead forming members 17 extend radially from the body 1 and may be moved toward the center thereof or away from the center of the said body 1 and secured in adjusted position by means of the thumb nut 21, mounted upon the screw 22 extending through the ear 23 and through the elongated opening 24 in each beading member 17, said screw 22 having a head 25 formed upon one end and a nut 26 inwardly of said head 25 and engaged against one side of the beading member 17 through which the screw 22 extends, whereby the beading member 17 will be clamped against one wall of the ear 23 when the thumb nut 21 is tightened upon the screw 22 or threaded against the opposite wall of said ear 23. It will be understood that the ear 23 is formed by providing a recess 27 in the forward edge of the flange 5 of the body 1 for each beading member 17 and by providing a space to the opposite side of said ear to accommodate the thumb nut 21. The tool may be readily held in proper position and rotated in either direction during use, by means of a handle 28 projecting laterally from the body 1, as will be readily apparent.

From the foregoing it will be clearly apparent that I have provided a tool which will be of extremely simple construction and operation and highly efficient in use, and which is formed in such a manner that the parts may be readily assembled, and should any of such parts become worn or broken, they may be readily replaced at a small cost.

l/Vhile I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the spirit and scope of the invention as claimed.

Having thus described my invention, 1 claim:

1. A device of the character described comprising a body, said body having an enlarged end, said enlarged end having a socket terminating in an enlarged inner end, said body having guide slots communicating at their inner ends with the enlarged inner ends of the socket, spreader members slidably engaged in said guide slots, means for limiting outward movement of said spreader members, a plunger having its inner end engaged with the spreader members to force the latter outwardly, and beading members carried by said enlarged end of the body.

2. A device of the character described comprising a body, said body being formed.

in sections, said body having a socket extending inwardly from one end, a portion of said socket being formed in each member forming the body, said body having guide openings for said spreader members, each guide opening being formed in part in each of the members forming the body, the outer ends of the guide openings being reduced to form stop walls, each of said openings having a curved inner wall, curved spreader members positioned in said guide openings, each spreader member having a curved wall for engagement with the curved Wall of the guide openingwithin which said spreader member is engaged, each spreader member being provided with a stop shoulder for engagement with the stop wall of the opening for said spreader member, and a plunger within said socket for engagement with the inner ends of the spreader members to force the latter outwardly.

3. A device of the character described comprising a body having an enlarged end,

concave recesses, means for securing said beading members in adjusted position, and spreading means carried by sald body.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES GEORGE BAKER. Witnesses:

E. H. YOUNG, MINDA A. MCCLINTOCK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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