US736684A - Tube-expander. - Google Patents

Description

PATENTED AUG. 1a, 1903.

J. J. CAIN.

TUBE EXPANDER.

APPLICATION FILED AUG. 4. 19oz.

2 SHEETS-SHEET 1.

N0 MODEL.

avwcuboz $51 a rway m Witmaooeo (911mb: Bfimwmamx No. 736,684. PATENTED AUG. 18, 1903.

J. J. GAIN.

TUBE EXPANDER.

APPLICATION FILED we. 4, 1902.

l l I Nrrnn STATES Patented August 18, 1903.

PATENT @FFICE.

TUBE-EXPANDER.

SPECIFICATION forming part of Letters Patent No. 736,684, dated August 18, 1903.

Application filed August 4,1902.

To (tZZ whom it may concern:

Be it known that 1, JOHN J. CAIN, a citizen of the United States, residing at Bayonne, in the county of Hudson and State ofNew Jersey, have invented certain new and useful 1mprovements in Tube-Expanders, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to devices for expanding tubes in tube-sheets of steam-generators.

The device is more particularly designed for expanding the water-tubes of sectional steam-generators into the corrugated or serpentine form of headers employed in generators of the Babcock and VVilcoX type.

In the accompanying drawings, forming a part of this specification, Figure 1 is a plan view, partly in section, of the machine applied for operation to a header supported upon aholder located adjacent thereto to expand the series of connecting water-tubes therein; Fig. 2, a side elevation of the same; Fig. 3, anenlarged plan view, partly in section, showing the construction of the clutch device and operating mechanism; Fig. 4, a vertical section of the same, and Fig. 5 a front view of the machine.

In the several figures the corresponding 11nmerals and lettersindicate the same parts.

In the drawings, 1 represents the framework upon which the machine is mounted.

2 is the operating-shaft, to which motion is conveyed by beveled gears from the countershaft 3, which communicates with the powershaft through the chain belt and sprocketwheel 4.

The operating mechanism is mounted upon a cross-head 5 and arranged transversely upon the framework 1 and is operated through the medium of the beveled gearing 6 7 8, clutchgearing 9 10, and .shaft 11, connecting with the expanding-too126. The gear 6 is slidably secured to the shaft 2 by means of a groove and featherac o. The cross-head 5 rests upon ways m m and is moved longitudinally along the same by means of the hand-wheel 12 and connected pinion 13, meshing with the fixed rack 14., as shown in Fig. 4, wherebyit is longitudinally adjusted in position to be operated in connection with each tube opening in the header.

The header-support is shown in Figs. 1 and Serial No. 118,218. (No model.)

2, plan and side position, respectively, the header A being held between heads 15 and 16, secured to its supporting-frame 17.

The clutch- gears 9 and 10 are mounted loosely on the shaft 11 and both constantly mesh with the fixed gearing, through which the power is transmitted from the operatingshaft 2, and consequently turn in opposite directions.

The clutch-collar 18 is slidably connected with the shaft 11 by means 'of a slot and feather and is operated by the hand-lever l9, pivoted at 20.

\Vhen the lever 19 is in its central position, as shown in Fig. 3, the clutch is disengaged, and when the lever is moved to the right or left the clutch engages with one of the gears to rotate the shaft 11 and expanding-tool in the direction desired.

The connection between the shaft 11 and the expanding-tool comprises a socket-sleeve 21, in which a sliding shank 22 is held. This shank is made square in cross-section to prevent its rotation independent of the shaft and is capable of longitudinal movement to accommodate the'expanding-tool to variable distances between the machine and the operating position of the expanding-tool.

Intermediate of the projecting end or head of the sleeve 21 and the expanding-tool a link 23 is provided, connecting the respective parts by means of universal joints 30, which provide for the rotation of the expanding-tool with the machine when located at an angle out of line with the tube operated upon, This or'equivalent means of connecting the expanding-tool with the operatingmachine and the type of the expanding-tool shown are not specifically claimed herein, as other devices for connecting these parts may be substituted and other known types of expanding-tools employed.

The operation of the machine to eifeet this expansion of each tube in the header will be readily understood from the drawings and the foregoing description of its parts, the mechanism for operating the expanders being moved along the ways and shaft 2 into position to register with each hand-hole opening in the face of the header opposite the respective tubes and then secured in place by the pawl and ratchet 25.

By means of the double-clutch device the shaft carrying the connected devices for rotating the expanding-tool is rotated in one direction as the tool enters the tube and is reversed when the tool is withdrawn.

The head of the expander is shown fitted with rollers 27. The kind of expanding-head employed may be different from that shown and changed to fit the character of the work upon which the tool is used.

When all the tubes are expanded in the header and the tool withdrawn, covers are placed over the hand-holes in the face of the header, and hydraulic or other pressure is applied within the header through the chambers or heads 15 16 from the connected pressure-supply pipe 24, which communicates with a pressure tank or reservoir.

In Fig. 2 the machine'and header-holding devices are shown for operation inclined from the horizontal in order that the header and pressure-chambers may be emptied by gravitation when liquid pressure is applied for testing.

What Iclaim, and desire to secure by Letters Patent, is l 1. In a machine for expanding tubes into sheets or headers, the combination of a framework, a driven shaft mounted longitudinally therein, a support for a transverse shaft mounted upon the framework and adjustable longitudinally thereon, a transverse shaft mounted in said support, gearing mounted in said support and arranged between the said transverse and longitudinal shafts and including a reversing-clutch, and an expand ing-tool driven by the said transverse shaft, substantially as set forth.

2. In a machine for expanding tubes into sheets or headers, the combination of a fixed framework, a support for the header, a support longitudinally adjustable upon the framework in front of the header, a driven shaft mounted in the said support, an expanding-tool, and a universal-joint connection between the said shaft and tool, whereby the tool is adapted to expand a tube whose axis is out of line with the driving-shaft of the expanding-tool, substantially as set forth.

3. In a machine for expanding tubes into headers, the combination of a support for a header, a framework substantially parallel with the face of the header, a support longitudinally movable upon said framework, a driven shaft mounted in the said support, an expanding-tool, and connections between the driven shaft and the tool including the sliding shank 22, whereby the expandingtool is adapted to operate at varying distances from its driving-shaft, substantially as set forth.

4.. -In a machine for expanding tubes into headers, the combination of a support for a header, a framework substantially parallel with the face of the header, a support longitudinally movable upon said framework, a driven shaft mounted in the said support, an expanding-tool, and connections between the driven shaft and the tool, including a sliding shank 22, and universal joints, substantially as and for the purposes set forth.

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

JOHN J. (JAIN.

Witnesses:

WM. J. BUTLER, J. F. DESMOND.

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