Improvements in Machines for Operating Flue-expanders.
Year: 1897

page_text: Date of Application, 1st Dec., 1897-Accepted, 1st Dec., 1898
COMPLETE SPECIFICATION.
Improvements in Machines for Operating Flue-expanders.
I, JAMES A. BARHYDT, of Rochester, New York, United States of
America, Machinist, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
This invention relates to that class of machines for expanding the ends of
flue-tubes and similar articles wherein a rotating tapering pin or mandrel is forced
into a flue-expanding device for rotating and expanding the usual rollers forming
part of such device.
The chief object of my present invention is to provide new and improved means
for rotating the pin or mandrel, and concurrently therewith longitudinally recipro-
cating or moving the same back and forth in the direction of the length of the
pin or mandrel.
The invention-also-has-for-its object to provide new and improved cylinder and
feed-piston mechanism for reciprocating or moving the pin or mandrel longitudin-
ally back and forth, whereby the feed-piston is perfectly balanced and its timely
movements are under absolute control of the attendant or operator.
The invention also has for its object to provide a new and improved fluid-actuated
mechanism for axially rotating and longitudinally reciprocating the pin or man-
drel, which expands and rotates the rollers composing the expander device to expand
the ends of flue-tubes or similar articles.
To accomplish all these objects my invention involves the features of construction,
the combination or arrangement of devices, and the principles of operation herein-
after described and claimed, reference being made to the accompanying drawings,
in which:
Figure 1 is a longitudinal central sectional view taken on a vertical plane through
my improved apparatus for operating the shaft or stock to which the pin or mandrel
(not shown) is in practice connected. Fig. 2 is a front elevation, and Figure 3
is a rear end elevation, of the same.
In order to enable those skilled in the art to make and use my invention, I will
now describe the same in detail, referring to the drawings, wherein-
The numeral 1 indicates a bed, base-frame, or foundation-plate suitable for
supporting the various parts of the apparatus and possessing sufficient strength for
the purpose in hand.
The bed, base-frame, or foundation-plate, is surmounted by a main cylinder 2,
bolted or otherwise suitably fixed in position thereupon and provided at its ends
with cylinder-heads 3 and 4, which are firmly attached through the medium of
retaining screws or bolts 5, fi, 7, and 8. The cylinder contains a sectional piston,
preferably composed of two sections 9 and 10, connected together by tie-bolts 12,
and clamping between them the packings 13, to which expanding-wires 14 are
applied for expanding the packings against the internal surface of the cylinder.
The packings are preferably composed of leather, but they may be made of any
ther suitable material.

page_text: The sections of the piston are respectively attached to two tubular rods 15 and 16,
which extend in opposite directions through stuffing-boxes provided on the cylinder
heads 3 and 4. These stuffing-boxes are preferably composed of caps 17 and 18,
screwed upon screw-threaded extensions projecting outward from the cylinder-
heads 3 and 4. The stuffing-boxes are provided with leather or other packings 19
and 20, to which retaining-wires 21 and 22 are applied to make tight joints with
the tubular piston-rods 15 and 16. The inner ends of the tubular piston-
but I
rods may be secured to the piston by any suitable means,
prefer to screw the inner ends of the rods into screw-threaded sockets formed
in the sections of the piston.
The shaft or stock 23, to which the pin or mandrel for expanding and rotating
the usual rollers forming a part of the tube-expanding device is connected, extends
longitudinally through the tubular piston rods 15 and 16. The shaft or stock 23
passes loosely at one end portion through a collar 24, screwed upon the outer end
of the tubular rod 15, and this outer end of the tubular rod is provided with check-
nuts 25, between which and the collar 24 a wear-washer 26 is placed. The outer
end of the tubular rod 16 is secured to a collar 27, having a pendent leg 28, which
engages and is movable along a guide 29, secured to the bed, base-frame, or
foundation-plate 1 in such manner that while the collar and leg 27 and 28 can
reciprocate they hold the tubular rod 16 from axial rotation. The shaft or stock 23;
extends through the collar 27, and is formed or otherwise provided with a collar 30
in close proximity to the collar 27. A wear-plate 31 is interposed between the
collars 27 and 30.
The shaft or stock 23 is formed or provided with a longitudinal groove or key;
seat 32, extending from a point at or near the collar 30 to a point in proximity to
the front end portion 33 of the shaft or stock. The groove or key-seat 32 receives
a key 34, engaging the hub of a gear-wheel 35 in such manner that the shaft or
stock 23 can be axially rotated by the gear-wheel 35, while at the same time the
shaft or stock can move longitudinally through the gearwheel. The hub at the
center of the gear-wheel 35 is mounted in a suitable boxing provided in an upright
frame or pillow-block 36, bolted or otherwise firmly secured to the bed, base-frame,
or foundation plate 1.
The pin or mandrel which is to enter the expanding device for expanding the
flue-tubes or other articles is connected in the usual manner with the outer end'
portion of the shaft or stock 23. I do not deem it necessary to illustrate the pin
or mandrel, or the tube-expanding device, or the connecting device between the
pin or mandrel and the shaft or stock 23, as these elements are well known and
therefore it is believed to be unnecessary to show them in the drawings.
The cylinder 2 and sectional piston constitute the feed mechanism for feeding
the shaft or stock 23 longitudinally or moving it back and forth for imparting
corresponding motion to the pin or mandrel. The cylinder is provided with ports 37
and 38, which are alternately inlet and outlet ports. The admission of the
working fluid to these ports is governed through the medium of any suitable valve,
as at 39, whereby the supply of pressure to the interior of the cylinder is controlled.
The working fluid is supplied to the cylinder from the valve 39 through the medium
of any suitable system of pipes, and the valve is in practice under the control of
the attendant or operator, so that the working fluid can be admitted into the
cylinder. The working fluid may be air, steam, gas, or other compressed agent,
and if admitted into the chambers 40 and 41, at opposite sides of the sectional
piston the pressure will be the same at both sides of the piston, and therefore the
latter will be perfectly balanced. If the operator adjusts the valve in one direction to
relieve the chamber 41 from pressure, the piston will be advanced to make the working
stroke and drive the shaft or stock 23 in the direction required to insert and force
the pin or mandrel into the tube-expanding device. If the pressure be restored
in the chamber 41 and relieved in the chamber 40 by a proper manipulation of
the valve, the piston will be caused to make its return stroke, and thereby move

page_text: the shaft or stock 23 in the direction to draw the pin or mandrel from the expand-
ing device.
In order to cause the pin or mandrel which enters the expanding device to rotate
the rollers which ordinarily constitute a part of such expanding device, the shaft
or stock 23 should be axially rotated as it makes its advance stroke. This is
readily accomplished by rotating the gear-wheel 35. This gear-wheel can be
rotated in any suitable manner, but I prefer to accomplish this object by causing
the gear-wheel 35 to mesh into a pinion 42, fixed to one end of a horizontal driving-
shaft 43, located above the cylinder 2 and provided with a balance-wheel 44. The
driving-shaft 43 is journaled at one end portion in the upper part of the pillow-
block 36 and at the opposite or rear end portion in a suitable bearing 45, preferably
mounted on the front end of the cylinder 2. The inner or rear end of the driving-
shaft 43 is provided with a crank, which, as here shown, is composed of a disk 46,
having a wrist-pin 47. The wrist-pin is connected with the lower end of a piston-
rod 48, which, at its upper end, is secured to a piston 49, working in a secondary
cylinder 50. The cylinder 50 is of the oscillatory type, and is mounted at the
center, as at 51, in a yoke-shaped frame 52, rigidly secured to and rising from the
upper side of the cylinder 2. The front side of the cylinder 50 is provided with a
seat 53 to receive the inner end of a screw 54, engaging a screw-threaded socket in
the overhanging end portion of the yoke-frame 52, whereby a perfect joint can be
maintained between the oscillatory driving-cylinder 50 and the yoke-frame.
The working fluid for the driving-cylinder may be air, steam, gas, or other
compressed agent, and is admitted to the ends thereof in the usual manner, so that
a reciprocatory motion can be imparted to the piston 49 for rotating the driving-
shaft 43, and thereby causing the gear-wheel 35 to rotate and turn the shaft or
stock 23 concurrently with its longitudinal movement.
-I-have-indicated-a-lever, as 55, for operating the valve 39, but do not wish to
be understood as confining myself to any particular construction of valve and
valve-operating devices.
My invention provides new and improved power-driven mechanism for rotating
the tapering pin or mandrel and forcing it into the expanding device which is
employed to expand the ends of the flue-tubes, and for this purpose the machine
will be found very efficient and satisfactory in actual operation.
Having now particularly described and ascertained the nature of this
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. The combination in a machine for operating a flue-expander, of an auxiliary-
rotatable and reciprocatory shaft or stock, a balanced feed-piston operated by a
working fluid and having a piston-rod with which the shaft or stock is connected
and in which the said shaft or stock rotates, means for controlling the working
fluid to move the piston and the shaft or stock longitudinally in either direction,
and power mechanism in operative connection with the shaft or stock for axially
rotating the same during the time it is moved longitudinally by the piston and
piston-rods, substantially as described.
2. The combination in a machine for operating a flue-expander, of a main
cylinder, a fluid-operator balanced feed-piston arranged in said cylinder and having
a tubular piston-rod, an axially-rotatable shaft or stock extending through the
piston and its piston rod, connected with the latter and axially rotatable therein
when moving longitudinally therewith, and power-driven mechanism geared to
the shaft or stock to axially rotate the same during the time it is moved longitud-
inally by the piston and its piston-rod, substantially as described.
3. The combination of a main cylinder containing a fluid-operated, balanced
feed-piston,
connected with the piston, means for
against
rotation
tubular rods
the
piston-rods
axial
while
holding
permitting
them to reciprocate, a shaft or stock extending through the piston-rods,
and rotatable therein, and means for axially rotating the shaft or stock concurrently

page_text: with the longitudinal movement imparted thereto by the piston, substantially as
described.
4. The combination of a main cylinder containing a balanced feed-piston,
tubular piston-rods connected with the piston and extending through the cylinder-
heads, means for holding the piston-rods against axial rotation while permitting
them to reciprocate longitudinally, a shaft or stock extending through the piston-
rods, a driving-shaft geared to the shaft or stock, and a cylinder and piston for
rotating the driving-shaft to axially rotate the shaft or stock concurrently with
the longitudinal movement imparted thereto by the piston and piston-rods,
substantially as described.
5. The combination of a main cylinder, a balanced feed-piston arranged therein,
tubular piston-rods extending through the cylinder-heads, a shaft or stock extend-
ing through the piston-rods, a connection between one of the piston-rods and the
shaft or stock, a device which prevents the piston-rods from rotating axially, a
driving shaft geared to the shaft or stock, and means for rotating said driving-
shaft, substantially as described.
6. The combination of a main cylinder containing a balanced feed-piston, a shaft or
stock movable longitudinally with the piston and adapted to rotate axially inde-
pendent thereof, a driving-shaft geared to the shaft or stock, and a secondary
cylinder and piston for imparting rotary motion to the driving-shaft, substantially
as described.
7. The combination of a main cylinder containing a balanced feed-piston, a shaft
or stock movable longitudinally with the piston and adapted to rotate axially
independent thereof, a gear-wheel keyed to the shaft or stock and through which
the latter moves longitudinally while the gear-wheel rotates, a driving-shaft geared
to said gear wheel, and a secondary cylinder and piston for imparting motion to the
driving-shaft, substantially as described.
8. The combination of a main cylinder containing a feed-piston, a shaft or stock
connected with said piston and adapted to rotate independently thereof, gearing
for imparting axial rotation to the shaft or stock, and a secondary piston and
cylinder for operating said gearing, substantially as described.
9. The combination of a main cylinder containing a feed-piston, tubular piston-
rods connected with the piston and extending through the cylinder-heads, a collar
connected with one piston-rod and having a leg portion, a guide which guides the
leg portion for holding the piston-rods against rotation while permitting them to
reciprocate, a shaft or stock extending through the piston-rods, a gear-wheel which
serves to rotate the shaft or stock while the latter moves longitudinally, a driving-
shaft geared to said gear-wheel, and means for rotating the driving-shaft,
substantially as described.
10. The combination with a main cylinder containing a feed-piston, tubular
piston-rods engaged with the piston and extending in opposite directions through
the cylinder-heads, a device for preventing axial rotation of the piston-rods while
permitting them to reciprocate longitudinally, a shaft or stock extending through
the piston-rods, and connected at one end with one of the latter, a gear-wheel
keyed to the shaft or stock and serving to rotate the latter while it moves longitud-
inally through said gear-wheel, a driving-shaft geared to said gear-wheel, and a
secondary cylinder and piston for rotating the driving-shaft, substantially as
described.
11. The combination of a main cylinder, a feed-piston arranged therein and
composed of two sections connected together by tie-bolts, tubular piston-roils
secured respectively to The sections of the piston and extending. in
opposite directions through the piston-heads, a shaft or stock
extending through the tubular piston-rods and connected at one end with one of
said rods, a collar secured to the outer end of the other piston-rod and having a leg
portion, a guide which guides said leg portion of the collar and prevents the
piston-rods from rotating while permitting them to reciprocate longitudinally, a
gear-wheel keyed to the shaft or stock and serving to rotate the latter while it

page_text: moves longitudinally through said gear-wheel, a driving-shaft geared to the gear-
wheel and having a crank-pin, and an oscillatory cylinder having a piston connected
with the crank-pin for rotating the driving shaft, substantially as described.
12. The combination of a main cylinder containing a feed-piston, a shaft or
stock movable longitudinally with said piston and adapted to rotate independently
thereof, gearing by which the shaft or stock is rotated axially during its
longitudinal motion, a driving-shaft for operating the gearing, and an oscillatory
cylinder which rotates the driving-shaft, substantially as described.
13. The combination in a machine for operating a Hue-expander, of an axially-
rotatable and reciprocatory shaft or stock, a fluid-operated mechanism for moving
the shaft or stock longitudinally, a driving-shaft geared with the rotatable and
reciprocatory shaft or stock and a fluid-operated mechanism connected with and
serving to rotate the driving shaft or stock during the time it is moving
longitudinally, substantially as described.
Din li daw of Dasambar 1807
HERBERT HADDAN & Co.,
Agents to the Applicant,
18, Buckingham Street, Strand, London, W.C.
HERBERT HADDAN & Co.,
Agents to the Applicant,
18, Buckingham Street, Strand, London, W.C.