Improvements in Corrugating Machines.
Year: 1896

page_text: Date of Application, 13th Oct., 1896-Accepted, 17th Apr., 1897
Improvements in Corrugating Machines.
A communication from SAMUEL S. SERGEANT, of No. 408 West Van Buren
Street, in the City of Chicago, County of Cook, and State of Illinois, United
States of America, Artist.
I, ALFRED JULIUS BOULT, of 111 Hatton Garden, in the County of Middlesex
Chartered Patent Agent, 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 improvements in machines to be used for corrugating
pipe or tubing after the said pipe or tubing has been made, and consists in the novel
features of construction and the new combination or arrangement of devices
hereinafter described and claimed, whereby the tubing or pipe is provided with
longitudinal corrugations.
The objects of this invention are first, to provide a machine for corrugating
pipe or tubing, which shall be simple and inexpensive in construction, strong
and durable and effective in operation; and which will form the corrugations
with uniformity and in a rapid and easy manner; and second, such a machine which
may be so adjusted as to operate on the pipe or tubing with uniform pressure at the
various points where the corrugations are being formed, and to produce all of the
corrugations at the same time and of any dimensions desired.
Figure 1, is a plan view of the machine, showing it mounted on a frame or
support.
Figure 2, is a view in side elevation thereof.
Figure 3, is an enlarged sectional view, taken on line 3, 3, of Figure 1,
showing the corrugating mechanism, and the means for adjusting the same on the
pipe or tubing.
Figure 4, is a face view of the guide disc and its adjustable corrugating rollers.
Figure 5, is a like view of a spiral or convolute gear used for adjusting the bars
or pieces carrying the corrugating wheels or rollers.
Figure 6, is a longitudinal sectional view, partly in elevation, of a portion of the
core or mandrel, showing a sleeve thereon for removing the pipe or tubing after it
shall have been corrugated.
Figure 7 is a detail view of a piece employed for engaging the sleeve shown in
Figure 6, when it is desired to remove the tubing from the mandrel. And
Figure 8, is a perspective view of a portion of a tube as it appears after being
corrugated.
Similar letters refer to like parts throughout the different views of the
drawings.
A, represents the main or supporting frame, upon and at the ends of which are
mounted in suitable bearings, the screw-shafts A¹ used for operating the traveller
or carriage B, which carries the corrugating mechanism. On one end of each of
the screw-shafts is secured a cogged gear b, which meshes with a pinion b', mounted
on a shaft which shaft is journalled on the main frame and is provided with a
pulley 6 to which the driving power may be applied, by means of a belt or other-
wise. Near the end of each of the screw-ebafts A¹ on which are mounted the

page_text: gears b, are collars C, on the bracket C, in which the shafts A' are supported and
may revolve, which collars are united by means of a cross-piece C¹ having on its
front central portion an enlargement C, which is provided with a recess or slot c,
for the reception and retention of the secured end of the mandrel D, which is formed
as shown in Figure 6 of the drawing, with an enlargement D', to fit within said
recess or slot, which is usually "T"-shaped, but may be of any other suitable form
to securely hold the mandrel in position. This mandrel is corrugated .. shown
in Fig. 6, and has on its corrugated portion a sleeve D', which is adapted to slide
thereon, and to remove the tube or pipe after it has been corrugated. The sleeve D²,
is formed with an annular enlargement d to engage the bifurcated piece D', which
is used when it is desired to remove the tubing or pipe from the mandrel. The
traveller or carriage B, is usually circular in form, and has through its contre an
opening e, for the passage of the mandrel and tubing, and is provided on its sides
with screw threaded portions c, through and with which the screw-shafts A', pass
and engage. In the face or surface of the traveller B, adjacent to the corrugating
mechanism, is formed an inwardly bevelled slot or opening c, which is circular in
its lower portion and open at its upper part to receive a clamp E, the lower portion
of which is bevelled, as at e, to engage the hub f, of the disc F, which carries the
corrugating mechanism. The upper portion of the clamp E, is provided with an
extension e, through which is passed a set-screw e', which engages the screw-threaded
opening e, in the upper part of the traveller or carriage, so that said clamp may be
tightened on the hub f, of the disc F, which hub is provided with a bevelled recess f',
on its periphery adjacent to the traveller. The disc F, and its hub is formed with
a central opening to admit of the passage of the mandrel and tubing, and said
disc and its bub are provided with radial slots or guide-ways g, for the reception
and operation of the adjustable bars G, each of which has journalled in its end
adjacent to the central opening in the disc or hub, a roller g', which is bevelled
on its periphery and contacts with the tubing or pipe, when the corrugations are
being formed therein.
On their surfaces adjacent to the traveller or carriage B, each of the bars G,
is formed with gear teeth g to engage the spiral or convolute gear h, on the
scroll and worm gear H, located on the hub of the disc, and which gear is
provided on its periphery with curvilinear gear teeth h', to engage a worm gear i,
on the shaft I, which has its bearings on the lower portion of the traveller,
and is provided at one end with a wheel I', and handle, for turning the same.
On the outer face surface of the disc or plate F and extending over the central
opening therein is a yoke or bracket M, which is provided with an opening m,
through its middle portion, which is somewhat larger in diameter than the
opening in the disc, so that when the traveller carrying the disc and corru-
gating mechanism is retracted or drawn to the ends of the screw shafts on which
are located the gears b, the said bracket or yoke will pass over and beyond the
enlargement d, on the sleeve D', by reason of its. enlarged opening, until it, (the
bracket) strikes the enlargement C, on the cross piece C, when the bifurcated
piece D, may be placed astride the sleeve D', and between the bracket and the
shoulder or enlargement d, on the sleeve (see Figure 6) in which figure the bracket
is indicated by dotted lines. When in such a position the machinery may be
reversed which will cause the traveller to move towards the opposite end of the
frame, which operation will carry or slide the sleeve D', on the mandrel D, and
remove the corrugated pipe or tube N, therefrom.
The operation of this machine is simple and as follows;-
The mandrel D, is secured in the enlargement C3, on the cross piece C, or at one
end of the frame, and extends longitudinally and parallel with the screw-shafts.
The sleeve D is then placed on the mandrel, and located at its secured end, as shown
in Figures 1 and 2 of the drawing. The piece of pipe or tubing is then placed on
the mandrel, when power may be applied to the pulley 6, which will cause the
screw-shafts to revolve and retract the traveller carrying the corrugating
mechanism, so that the rollers thereof may be caused to contact with the outer

page_text: surface of the tubing or pipe, and their pressure regulated by turning the worm
shaft I, which meshes with the gear teeth on the periphery of the gear H, whose
spiral or convolute gear h, as before stated engages the teeth g, on the adjustable
bars G, which carry the corrugating rollers or wheels. When the traveller carrying
the corrugating mechanism shall have been retracted to the secured end of the
mandrel, the forked piece D', may be placed astride of the sleeve D', between the
enlargement d, thereon and the bracket M, when the machinery may be reversed to
cause the traveller to move in the opposite direction, and carry with it the said
sleeve, which will contact with the end of the corrugated tube, and remove it from
the mandrel, as is apparent.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondent, and in what manner the
same is to be performed, I declare that what I claim is ;
1. The combination with a main frame of a carriage movably supported thereon,
a series of arms radially arranged on said carriage, a corrugating wheel journalled
on each of the arms, means to force and hold said wheels in contact with the pipe or
tube, and a screw-shaft to propel the carriage, substantially as described.
2. The combination with a main frame of a traveller or carriage movably
supported thereon and having a central opening, a series of bars radially
arranged on said traveller and having gear teeth a corrugating wheel journalled
on each of the bars at said opening a spiral gear to engage the teeth on said
bars and a device to turn the spiral gear to force and hold the corrugating
wheels in contact with the pipe or tubing substantially as described.
3. The combination with a main frame of a traveller or carriage movably
supported thereon a series of bars radially arranged on said traveller and having
gear teeth a corrugating wheel journalled on each of the bars a spiral and worm
gear on the traveller to engage the said bars and a worm shaft respectively and
the said worm shaft jonrnalled on the traveller and having a device to turn it
substantially as described.
4. The combination with a main frame of screw shafts journalled thereon a device
to operate said shafts a traveller or carriage mounted on the screw-shafts a series of
bars radially arranged on the traveller and having gear teeth, a corrugating wheel
journalled on each of the bars a spiral gear to engage the teeth on said bars and a
device to turn the spiral gear to force and hold the corrugating wheels in contact
with the pipe or tubing substantially as described.
5. The combination with a main frame of screw-shafts journalled thereon a device
to operate said shafts a traveller or carriage mounted on the screw-shafts a series
of bars radially arranged on the traveller and having gear teeth a corrugating
wheel journalled on each of the bars, a spiral and worm gear on the traveller to
engage the said bars and a worm shaft respectively and the said worm shaft
journalled on the traveller and having a device to turn it substantially as
described.
6. The combination with a main frame of a traveller or carriage movably
supported thereon and having a central opening a yoke or bracket secured to the
traveller and having an opening in alignment with the opening in the traveller a
series of bars radially arranged on said traveller and having gear teeth a corru-
gating wheel journalled on each of the bars a spiral gear to engage the teeth of the
bars and a device to turn the spiral gear to force and hold the corrugating wheels
in contact with the pipe or tubing a mandrel secured at one of its ends and adapted
to extend through the openings in the yoke and carriage a sleeve located on the
mandrel and provided with an enlargement and a piece to engage said sleeve and
yoke substantially as described.
7. The combination with a main frame of a traveller movably supported
thereon and having a central opening a yoke or bracket secured to the traveller
and baving an opening in alignment with the opening in the traveller a series of
bars radially arranged on the traveller and having gear teeth, a corrugating wheel

page_text: Journalled an each of the bars a spiral and worm gear on the traveller. to engage the
said bars and a warm shaft respectively said worm shaft journalled on the traveller
and having a device. to turn it to adjust the corrugating: wheels on the tube or
pipe a mandrel secured at one of its ends and adapted to extend through the
openings in the yoke and traveller a sleeve located on the mandrel and a piece to
engage said sleeve and yoke substantially as described.
8. The combination with a main frame of screw shafts journalled thereon a device
to operate said shafts a traveller or carriage mounted on the screw .shafts and
provided with a central opening a yoke or bracket secured to the traveller and
having an opening in alignment with the opening in the traveller a series of
bars radially arranged on said traveller and having gear teeth a corrugated wheel
journalled on each of the bars a spiral gear to engage the teeth of the bars and a
device to turn the spiral gear to adjust the corrugating wheels on the tubing or pipe
a mandrel secured at one of its ends and adapted to extend through the openings in
the yoke and traveller a sleeve located on the mandrel and a piece to engage said
sleeve and yoke substantially as described.
9. The combination with a main frame of screw shafts journalled thereon a device
to operate said shafts a traveller or carriage mounted on the screw shafts and having
a central opening a yoke or bracket secured to the traveller and having an opening
in alignment with the opening in the traveller a series. of bars radially arranged on
the traveller and having gear teeth a corrugating wheel journalled on each of the
bars a spiral and worm gear on the traveller to engage the said bars and a worm
shaft respectively said worm shaft journalled on the traveller and having a device
to turn it to adjust the corrugating wheels on the tubing or pipe a mandrel secured
at one of its ends and adapted to extend through the openings in the yoke and
traveller a sleeve located on the mandrel and a piece to engage said sleeve and yoke
substantially as described.
Dated this 13th day of October 1896.
BOULT & WADE,
Agents for the Applicant