Improvements in Machinery or Apparatus for the Manufacture of Corrugated Furnace Flues and Analogous purposes.
Year: 1898

page_text: Date of Application, 4th Apr., 1898
Complete Specification Left, 7th Jan., 1899-Accepted, 18th Feb., 1899
Improvements in Machinery or Apparatus for the Manufacture of
Corrugated Furnace Flues and Analogous purposes.
I, JOHN IRELAND BOOKER, of Tong Road, Leeds, in the County of York, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention has reference to improvements in machinery or apparatus for
the manufacture of corrugated furnace flues for steam boilers and analogous
purposes.
The object of this my said invention is to construct a machine or apparatus that
shall be capable of corrugating parallel or conical furnace flues or other tubes in an
efficient manner to which end I fit or mount between suitable housings or standards
a pair of main corrugating rollers and a pair of auxillary guide rollers each having
the desired form of corrugation thereon. For the manufacture of parallel furnace
flues or other parallel tubes parallel main corrugating and auxillary guide rollers
are fitted in position between the housings and conical main corrugating and
auxillary guide rollers are used for the manufacture of conical furnace flues or
other conical tubes. The top or upper main corrugating roller whether parallel or
conical is arranged so that it can be drawn laterally away from or out of the housings
by means of a sliding headstock actuated by hydraulic or other power whilst the
bottom or lower parallel or conical main corrugating roller is allowed to move in a
vertical or upward direction and is driven or revolved by any suitable means.
The apparatus I employ to lift or raise the bottom main corrugating roller towards
or against the top main corrugating roller whether such rollers be parallel or conical
consists of a pair of approximately shaped lifting levers having their respective
fulcrums centred in one horizontal line and the top or horizontal arm of the one
lever equal to the horizontal arm of the other lever. The lower or vertical arms of
the lifting levers are of unequal dimensions that is to say the vertical arm of the
one lever is greater or longer than the vertical arm of the other lever. The lever
having the lesser vertical arm is connected say by a link-bar to the rod or plunger
of an hydraulic or other cylinder and is arranged so that its movement is limited by
the housings which latter thus form a stop or check. The housings and cylinder
are connected or secured by tie rods or columns to obviate any likelyhood of the
housings shifting their position during the working of the cylinder when actuating
the lifting levers and other shocks to which the housings may be subjected. The
lifting levers are connected together by means of a shaft or connecting rod or rods.
This shaft or shafts is or are at one end or ends mounted upon a pin or pivots in
the lesser vertical arm of the one lever whilst its or their other end or ends may be
fitted in the required position to the greater vertical arm of the other lever which
lever has two or more eyes or holes in its vertical arm so that the shaft or shafts
can be fixed by a pin or otherwise either in a horizontal position for the
manufacture of parallel furnace flues or other parallel tubes or in a more or less
slanting or angular position for the treatment of conical furnace flues or other
conical tubes. The lesser or horizontal arms of both lifting levers work
against toggle pieces which carry sliding blocks preferably of T section which in
DQ931

page_text: turn support the bearings upon which work the ends of the bottom parallel or
conical main corrugating roller.
The auxillary parallel or conical guide rollers are carried by and mounted at the
elbow or bend of levers of approximately > shape which levers are hung from or
fulcrumed at either end of the housings. These swinging levers thus form moveable
bearings for the auxillary parallel or conical guide rollers. The lower arms of
each pair of levers at either end of the machine or apparatus are connected by
cross-bars to double-ended levers which are carried by a shaft operated by a
quadrant which gears with a worm wheel. This latter is operated by a spur wheel
and rack which rack is actuated by hydraulic or other power. It will be seen that
by operating the rack the auxillary parallel or conical guide rollers will in turn be
moved with and carried by the swinging levers and are thus free to revolve in their
bearings thereby considerably reducing the friction during the process of
corrugating. In order to further lessen the friction caused by the auxillary parallel
or conical guide rollers during the corrugating operation I drive these rollers from
say the engine shaft operating the bottom parallel or conical main corrugating
roller which shaft drives by means of a belt or other connection two horizontal
shafts which in turn are connected with and drive the auxillary parallel or conical
guide rollers so that they revolve in the reverse direction to the furnace flue or
other tube under treatment.
In the manufacture of parallel corrugated furnace flues or other parallel
corrugated tubes a pair of parallel main corrugating rollers are fitted in position
between the housings or standards. A pair of auxillary parallel guide rollers are
also mounted between the housings upon the swinging levers as hereinbefore
described. The top parallel main corrugating roller is cleared laterally of the
housings and the plain parallel tube to be treated placed in position so as to rest
upon, the auxillary parallel guide rollers. The top parallel main corrugating roller
is then replaced so as to be within the parallel tube under operation and the shaft
or connecting rod or rods of the lifting levers is or are fitted in its or their hori-
zontal position and by aid of the hydraulic or other cylinder the lifting levers are
operated so as to cause the bottom parallel main corrugating roller to be lifted or
raised in a vertical direction the body of such roller remaining parallel or horizontal
during the movement. The parallel tube under treatment is thus gripped between
the top and bottom main corrugating and auxillary guide parallel rollers and the
process of corrugating performed by driving or revolving the bottom parallel main
corrugating roller as is well known.
To corrugate conical furnace flues or other conical tubes I preferably use conical
main and auxillary guide rollers having corrugations formed thereon reducing in
size in proportion to the diameter of the rollers and with their axes converging
towards one point in commcn all in accordance with my application for Letters
Patent No. 14796 of 1897. The shaft or connecting rod or rods of the lifting levers
is or are fixed in position so as to take a slanting or angular position. The lifting
levers are then operated so as to cause the end of the bottom conical main corrugating
roller acted upon by the lever having the lesser vertical arm to travel further or
higher than the other end of the said roller which end is acted upon by the lever
having the greater vertical arm and thereby gradually bringing the bottom main
conical corrugating roller into true position in its relation to the top inain conical
corrugating roller thus allowing a conical furnace flue or other conical tube to be
corrugated without unduly straining or drawing the material during the operation.
Conical and parallel furnace flues or other tubes having any desired form of
corrugations may be made respectively with conical and parallel main corrugating
and auxillary guide rollers having corresponding corrugations formed thereon.
It will be seen that by the use of the lifting levers and the moveable shaft or
connecting rod or rods herein before described I am enabled to corrugate with any
desired form of corrugation in one and the same machine or apparatus parallel
furnace flues or other parallel tubes and also conical furnace flues or other conical
tubes.

page_text: The arrangement of the lifting levers hereinbefore described is highly efficient as
the power gained by their leverage is considerable and the bottom main corrugating
roller whether parallel or conical is thereby held firmly and truely in the required
position thus ensuring the proper treatment of the article under operation.
Improvements in Machinery or Apparatus for the Manufacture of
Corrugated Furnace Flues and Analogous purposes.
I, JOHN IRELAND BOOKER, of Tong Road, Leeds, in the County of York,
Engineer, 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 has reference to improvements in machinery or apparatus for the
manufacture of corrugated furnace flues for steam boilers and analogous purposes.
The object of this my said invention is to construct a machine or apparatus that
shall be capable of corrugating parallel or conical furnace flues or other tubes
in an efficient manner to which end I fit or mount between suitable housings or
standards a pair of main corrugating rollers and a pair of auxiliary guide rollers
each having the desired form of corrugation thereon. For the manufacture of
parallel furnace flues or other parallel tubes parallel main corrugating and auxillary
guide rollers are fitted in position between the housings and conical main corrugating
and auxillary guide rollers are used for the manufacture of conical furnace flues or
other conical tubes. The top or upper main corrugating roller whether parallel or
conical is arranged so that it can be drawn laterally away from or out of the
housings by means of a sliding headstock actuated by hydraulic or other power
whilst the bottom or lower parallel or conical main corrugating roller is allowed to
move in a vertical or upward direction and is driven or revolved by any suitable
means.
The apparatus I employ to lift or raise the bottom main corrugating roller
towards or against the top main corrugating roller whether such rollers be parallel
or conical consists of a pair of approximately shaped lifting levers having their
respective fulcrums centred in one horizontal line and the top or horizontal arm of
the one lever equal to the horizontal arm of the other lever. The lower or vertical
arms of the lifting levers are of unequal dimensions that is to say the vertical arm
of the one lever is greater-or longer than the vertical arm of the other lever.
The lever having the lesser vertical arm is connected say by a link-bar to the rod
or plunger of a hydraulic or other cylinder and is arranged so that its movement is
limited by the housings which latter thus form a stop or check. The housings and
cylinder are connected or secured by tie rods or columns to obviate any likelihood
of the housings shifting their position during the working of the cylinder
when actuating the lifting levers and other shocks to which the housings may be
subjected. The lifting levers are connected together by means of a shaft or
connecting rod or rods. This shaft or shafts is or are at one end or ends mounted
upon a pin or pivot in the lesser vertical arm of the one lever whilst its or their
other end or ends may be fitted in the required position to the greater vertical arm
of the other lever which lever has two or more eyes or holes in its vertical arm so

page_text: In order to lessen the friction caused by the auxillary guide rollers, 20, 20a, I´
drive these rollers from say the engine shaft, 28, which operates the bottom main
corrugating roller.
The shaft, 28, drives by means of belts, 29, two horizontal shafts, 30, 30 a, which,
in turn are connected with and drive the auxillary guide rollers, 20, 20 a, so that.
they revolve in the reverse direction to the furnace flue or other tube y. under
treatment as is indicated by arrows in the diagram.
In the manufacture of parallel corrugated furnace flues or other parallel.
corrugated tubes a pair of parallel main corrugating rollers, 2, 2, are fitted in
position between the housings or standards, 1, 1 a. A pair of auxillary parallel.,
guide rollers, 20, 20 a, are also mounted between the housings upon the swinging
levers, 21, 21 a, as herein-before described. The top parallel main corrugating
roller, 2, is cleared laterally of the housings by means of the sliding headstock, 6,
and the plain parallel tube, X, (see Fig. 2, Sheet 2,) to be treated placed in
position so as to rest upon the auxillary parallel guide rollers, 20, 20 a. The top
parallel main corrugating roller, 2, is then replaced within the tube, X, under
operation and the shaft or connecting rod, 14, of the lifting levers 10, 10a, is
fitted in its horizontal position in the eye or hole, 16, of the arm, 10c, of the
lifting lever, 10, and by aid of the hydraulic or other cylinder, 12, the lifting.
levers, 10, 10 a are operated so as to cause the bottom parallel main corrugating
roller, 2 a, to be lifted or raised in a vertical direction; the body of such roller
remaining parallel or horizontal during the movement. The parallel tube, X, under
treatment is thus gripped between the top and bottom main corrugating and
auxillary guide parallel rollers and the process of corrugating performed by
driving or revolving the bottom parallel main corrugating roller, as is well
known.
To corrugate conical furnace flues or other conical tubes I preferably use conical
main and auxillary guide rollers having corrugations formed thereon reducing in
size in proportion to the diameter of the rollers and with their axes converging
towards one point in common all in accordance with my application for Letters
Patent No. 14796 of 1897. The shaft or connecting-rod, 14, of the lifting
levers, 10, 10a, is fixed in position in the eye or hole, 16a, in the arm, 10c, of the
lifting lever, 10, .thus taking up a slanting or angular position. The lifting

page_text: levers, 10, 10 a, are then operated by the cylinder, 12, so as to cause the end of the
bottom conical main corrugating roller, 3 a, acted upon by the lever, 10 a, to
travel further or higher than the other end of the said roller which end is acted
upon by the lever, 10, thereby gradually bringing the bottom main conical
corrugating roller, 3 a, into true position in its relation to the top main conical
corrugating roller, 3, thus allowing a conical furnace flue, or other conical tube to
be corrugated without unduly straining or drawing the material during the
operation.
Conical and parallel furnace flues or other tubes having any desired form of
corrugations may be made respectively with conical and parallel main
corrugating and auxillary guide rollers having corresponding corrugations
formed thereon.
It will be seen that by the use of the lifting levers and the moveable shaft or
connecting rod or rods hereinbefore described I am enabled to corrugate with any
desired form of corrugation in one and the same machine or apparatus parallel
furnace flues or other parallel tubes and also conical furnace flues or other conical
tubes..
The arrangement of the lifting levers hereinbefore described is highly efficient
as the power gained by their leverage is considerable and the bottom main
corrugating roller whether parallel or conical is thereby held firmly and truely in
the required position thus ensuring the proper treatment of the article under
operation.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1) In machinery or apparatus for the manufacture of corrugated parallel and or
conical furnace flues or other tubes lifting levers having their respective fulcrums
centred in one horizontal line their horizontal arms being of equal dimensions and
their vertical arms of unequal dimensions with eyes or holes so as to admit of the
adjustment of a rod or rods connecting the lifting levers arranged constructed and
operated substantially as described and shewn and for the purposes set forth.
(2) In machinery or apparatus for the manufacture of corrugated parallel and or
conical furnace flues or other tubes swinging levers fulcrumed to the housings or
standards of the machine or apparatus in such wise that auxillary guide rollers
mounted thereon may be made adjustable in their relation to the article under treat-
ment arranged constructed and operated substantially as described and shewn and
for the purposes set forth.
.
(3) In machinery or apparatus for the manufacture of corrugated and or conical
furnace flues or other tubes auxillary guide rollers mounted on swinging levers and
driven in such wise as to revolve in the reverse direction to the article under treat-
ment arranged constructed and operated substantially as described and shewn and
for the purposes set forth.
(4) Improved machinery or apparatus for the manufacture of corrugated and or
conical furnace flues or other tubes substantially as described and shewn.
Dated this 4th day of January 1899.