Im- PROVEMENTS IN APPARATUS FOR MOULDING CONCRETE PIPES, PARTS OF WHICH APPARATUS ARE ALSO APPLICABLE TO THE DRILLING OF ROCKS AND OTHER LIKE PURPOSES
Year: 1874

page_text: LETTERS PATENT to James William Butler, of Stonebridge Park,
Willesden, in the County of Middlesex, for the Invention of “Im-
PROVEMENTS IN APPARATUS FOR MOULDING CONCRETE PIPES, PARTS OF WHICH
APPARATUS ARE ALSO APPLICABLE TO THE DRILLING OF ROCKS AND OTHER LIKE
PURPOSES." A communication from abroad by John W. Stockwell,
1
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PROVISIONAL SPECIFICATION left by the said James William Butler
at the Office of the Commissioners of Patents, with his Petition, on,
the 20th August 1874.
I, JAMES WILLIAM BUTLER, of Stonebridge Park, Willesden, in the
County of Middlesex, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN APPARATUS FOR MOULDING CONCRETE PIPES, PARTS
OF WHICH APPARATUS ARE ALSO APPLICABLE TO THE DRILLING OF ROCKS AND OTHER
LIKE PURPOSES," a communication to me from abroad by John -W.
Stockwell, of Portland, State of Maine, United States of America, to be
as follows:
This Invention relates to that class of moulding machines for the

page_text: production of concrete pipes in which the pipes are formed by ramming
or packing by self-acting means the cement or materials of which they
are composed between the external surfaces of a central or internal core
and the internal surfaces of an outer casing or mould, and consists
chiefly of an improved appliance for performing the above operations,
and of a peculiar mode of operating the same, which improvements
admit of the pipes being manufactured with greater facility than
heretofore.
In carrying out this Invention it is proposed to employ an instrument
termed a tampor for ramming down or packing the materials of which
the pipes are composed in the interior of the mould.
The tampor consists of a foot of any desired shape, which is formed on
or attached to the lower end of a vertical rod, the upper end of which is
connected by an arm which is susceptible of adjustment to suit the
diameter of pipe to be produced to the lower end of a vertical shaft. On
this shaft and above the arm herein-before referred to there is placed an
adjustable clutch or lever consisting of a boss provided with a projection
which is caused to enter or engage with a grooved cam carried on the
end of a horizontal shaft, which latter shaft may be provided either with
a hand wheel for working the apparatus by hand or with driving pullies
for actuating the same from any suitable prime mover, or with both in
combination if desired. The tampor is arranged above an aperture formed
in a slide which is held in its place by latches in the bottom of a box
which may contain the material to be moulded, and beneath this
aperture the mould and core supported on a frame are brought by being
traversed along rollers, or otherwise.
The material to be moulded is gradually introduced into the mould,
and the horizontal shaft is at the same time set in motion, the groove
cam on which acting upon the clutch or lever of the vertical shaft with
which it is engaged causes the tampor both to rotate, and rise, and fall
so as to effect the ramming and smoothing down of the material in the
mould as such material is supplied.
When a joint of pipe has been formed the mould containing the pipe
is withdrawn and replaced by another mould, and the operation is
repeated without delay. The female end of the pipe is formed by means
of the base of the mould during the operation of moulding the pipe, but
the shape of the male end is produced subsequently by the employment

page_text: of a ring of a suitable form and having a notch or cutting edge, the
turning of such ring by hand in contact with the end of the pipe while
the material is in a soft condition having the effect of imparting the
desired tapering form to the end of the pipe.
The case of the mould is formed of sheet iron or other suitable
material, and so constructed as to be capable of opening and closing,
and when closed is fastened by a latch or other similar contrivance. It
is also provided with notches or recesses which fit over correspondingly
shaped ears or projections on the base of the mould so as to maintain
the case stationary during the moulding of the pipe, and such recesses
also admit of the circulation of air for the purpose of hardening the end
of the pipe.
The core may also be composed of a similar material, and
in a similar manner to the case, and is made contractible in order to
admit of its removal from the mould when a joint of pipe has been
formed. The two sides or edges of the core are connected together by
cross pieces which are pivotted to the core and to a vertical strip, the act
of raising or lowering such strip having the effect of contracting or
expanding the core, as the case may be. The core is held in position by
a bayonet joint.
The boss of the clutch or lever which engages with the grooved cam,
lierein-before described, may be provided with pivotted blocks or rollers
having curved inner faces so as to fit and grip the vertical shaft. The
position of the clutch or lever upon the vertical shaft may be adjusted
at pleasure so as to regulate the vertical stroke and the force of the blow
of the tampor by means of a lever which is pivotted to the frame, to
which lever a slide (maintained in position by an eccentric) is attached,
by acting upon which the clutch or lever may be slipped along the
vertical shaft, and the distance which the said clutch or lever lifts the
shaft increased or diminished as desired.
When it is required to impart a vertical motion only to the tampor a
forked device may be applied to the frame and the clutch or lever may
be passed between its bifurcations, by which means the cam will simply
have the effect of lifting the clutch or lever and allowing it to fall, and
the rotatory motion of the tampor will be suspended. A pivotted catch
is provided for the purpose of maintaining the vertical shaft when raised,
this catch works against the hand wheel (when such is employed, or it
may be caused to act against any other suitable part of the apparatus.

page_text: In some cases the tampor may be simply rotated, and trowels may be
attached to its lower end, an additional vertical shaft or shafts being
then employed if required.
The method herein-before described of actuating the tampor is also
applicable to rock drills, and for other similar purposes.
The opposite end of the vertical shaft of the tamping apparatus may
also be made of a sharpened form so as to admit of such shaft being
used as a drill when reversed.
The arm which connects the tampor to the vertical shaft may, if
required, be fitted loosely to such shaft, by which means facility will be
afforded for the tamping of pipe of an oval or any other form.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James William Butler in the Great Seal Patent
Office on the 20th February 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
WILLIAM BUTLER, of Stonebridge Park, Willesden, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of August, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reigu, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said James William Butler, Her
special license that I, the said James William Butler, my executors,
administrators, and assigns, or such others as I, the said James William
Butler, my executors, administrators, or assigns, should at any time
agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN APPARATUS FOR MOULDING CONCRETE PIPES, PARTS
OF WHICH APPARATUS ARE ALSO APPLICABLE TO THE DRILLING OF ROCKS AND OTHER
LIKE PURPOSES," a communication to me from abroad by John W.
Stockwell, of Portland, State of Maine, United States of America, upon

page_text: the condition (amongst others) that I, the said James William Butler,
my executors or administrators, by an instrument in writing under
my hand and seal, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said James William Butler, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Drawings, and to the letters and figures marked thereon, that is to
say:―
The said Invention relates to that class of moulding machines for the
production of concrete pipes, in which the pipes are formed by ramming
or packing by self-acting means the cement or materials of which they
are composed between the external surfaces of a central or internal core
and the internal surfaces of an outer casing or mould, and consists
chiefly of an improved appliance for performing the above operations,
and of a peculiar mode of operating the same; but it also embraces
improvements in certain details of the apparatus, as herein-after
described.
In carrying out the said Invention an instrument termed a tampor is
employed for ramming down or packing the materials of which the
pipes are composed in the interior of the mould.
The tampor consists of a foot of any desired shape, which is formed
or attached to the lower end of a vertical rod, the upper end of which
is connected by an arm (which is capable of adjustment to suit the
diameter of pipe to be produced) to the lower end of a vertical shaft.
On this shaft and above the arm hercin-before referred to, there is placed
an adjustable clutch or lever, consisting of a boss provided with a pro-
jection which is caused to enter or engage with a grooved cam carried
on the end of a horizontal shaft, which latter shaft may be provided
either with a hand wheel for working the apparatus by hand, or with
driving pullies for actuating the same from any suitable prime mover,
or with both in combination, if desired. The tampor is arranged above
an aperture formed in a slide, which is held in its place by latches

page_text: in the bottom of a box containing the material to be moulded,
and beneath this aperture the mould and core supported on a
carriage or frame arc brought by being traversed along rollers or
otherwise.
The material to be moulded is gradually introduced into the mould,
and the horizontal shaft is at the same time set in motion, the grooved
cam on which acting upon the clutch or lever of the vertical shaft with
which it is engaged causes the tampor both to rotate and rise and fall
so as to effect the ramming and smoothing down of the material in the
mould as such material is supplied.
When a joint of pipe has been formed, the mould containing the pipe
is withdrawn and replaced by another mould, and the operation is
repeated without delay. The female end of the pipe is formed by means
of the base of the mould during the operation of moulding the pipe, but
the shape of the male end is produced subsequently by the employment
of a ring of a suitable form and having a notch or cutting edge, the
turning of such ring by hand in contact with the end of the pipe while
the material is in a soft condition having the effect of imparting the
desired tapering form to the end of the pipe.
The boss of the clutch or lever which engages with the grooved cam
herein-before described, may be provided with pivotted blocks or rollers
having curved inner faces, so as to fit and grip the vertical shaft. The
position of the clutch or lever upon the vertical shaft may be adjusted
at will so as to regulate the vertical stroke and the force of the blow of
the tampor by means of a lever which is pivotted to the framing, to
which lever a slide (maintained in position by an eccentric) is attached,
by acting upon which the clutch or lever may be slipped along the vertical
shaft, and the distance which the said clutch or lever lifts the shaft
increased or diminished as desired.
When it is required to impart a vertical motion only to the tampor, a
forked device may be applied to the framing, and the clutch or lever
may be passed between the bifurcations of the fork with its end resting
upon the periphery of the cam, by which means the cam will simply
have the effect of lifting the clutch or lever and allowing it to fall, and
the rotatory motion of the tampor will be suspended. A pivotted
catch is provided for the purpose of maintaining the vertical shaft when
raised.
This catch works against the hand wheel (when such is

page_text: Figure 5 is a plan of the carriage upon which the case and core are
placed, and of the rollers for moving the same away from the machine.
Figure 6 is a perspective view of the device for imparting a simple
vertical motion to the tampor without rotating it.
Figure 7 is a side view of the cam by which the tampor is both
rotated and moved vertically.
Figure 8 is a plan of the clutch, which together with the cam,
Figure 7, serves to operate the tampor; and Figure 9 is a sectional view
of the same,

page_text: Figures 10 and 11 are different views of another form of clutch for the
same purpose.
Figure 12 is a plan of the device for forming the male end of a joint
of pipe; and Figure 13 is a sectional view of the same.
A is the frame of the machine; B is a horizontal shaft therein operated
by hand or power, having at one end the cam C, Figure 7, rigidly
attached thereto. Into the aperture or opening of this cam loosely rests
the ends of the clutch or lever a which is fitted on the rod b. As the
cam C, Figure 7, is revolved the clutch a both raises the rod b, gives. it
a partial rotation on its own axis, and allows it to drop; the part c of
the aperture of the cam, Figure 7, carries the end of the clutch a
upward and then around so as to both raise and partially to revolve the
rod ; the end of the clutch a then drops from the projection d down
to e, and it is that motion which permits the rod 6 to drop after being
raised. At the bottom of the rod is the horizontal arm f, carrying
the tamping rod 9 with the tampor g¹; this rod works in the annular
space between the core E, Figure 4, and the outer case or mould F,
Figures 3 and 3ª, and travels around in the same as the rod b is rotated
in the manner described.
The material to be formed into a pipe is introduced into this annular
space and thus compactly formed and beaten into a tube; the core E,
Figure 4, fits into the circular space h of the carriage G, Figure 5, while
the case F, Figures 3 and 3ª, fits around on the outside of the ring
indicated at . The case F is formed of any suitable material, but by
preference of sheet iron, and so constructed as to be capable of opening
and closing, and when closed it is fastened by the latch ;, or any similar
contrivance. % are handles for removing the case from over a joint of
pipe. are recesses to fit over the ears m in order to keep the case
stationary while a joint of pipe is being formed. The core E, Figure 4,
is also formed of some thin material similarly to the case, and is removed
from the inside or bore of the joint of pipe when formed by reason of its
being capable of construction in consequence of its own clasticity or
otherwise. With this view the horizontal pieces n are pivotted to the
inside of the core and to the vertical strip o. As the strip o is pulled up
the core is contracted, whilst it is pushed down and the pieces n
thereby forced into a horizontal position the core is expanded, in which
latter position it is maintained until a joint of pipe is completed. The

page_text: core is held in position by the bayonet joint p, which is made to receive
a slight projection or stud q, Figure 5.
The carriage G, Figure 5, is placed upon the rollers & so that the
tampor shall fit in the annular space between the core and the case.
The material is then supplied as needed, the rod b operated as described,
and a joint of pipe is made. It is evident that the tampor g¹ and rod b
will rise as the joint of the pipe is being made until the lower end of the
tampor is even with the top of the case. The rod is then pushed up so
as to lift the tampor g' out of the case when the case, the carriage G,
and the joint of newly formed pipe are easily pushed away from the
machine on the rollers s. A moveable tabe or slide t is made to fit into
the aperture u and form a box w surrounding the annular space between
the core and case, and thus facilitate the introduction of the material of
the pipe as it is required. This moveable part t is held in place by the
latches v, and is drawn out before the case with the pipe is removed as
above described. x is a lever pivotted at y for regulating the extent to
which the rod can be lifted by the rotation of the cam C, and con-
sequently the force of the blow of the tampor g'. By drawing down
upon the slide the end of the lever x, which is connected with the
rod b, the clutch a will be slipped upon the rod b, and the distance
which the clutch a will lift the rod at cach revolution of the cam will
be diminished. The slide is held in position by the eccentric Kas
shewn.
÷
Figure 6 shews a device L, by which the revolutions of the cam C arc
made to impart only a vertical motion to the rod b, and deprive it of the
rotary one, as shewn in Figure 6ª. The clutch a is so disposed that its
end rests upon the periphery of the cam C, and the device L is placed
through an aperture of the frame so as to cause the bifurcations M to
embrace the end of the clutch. It is evident that inasmuch as the
clutcli only moves up and down the rod can have no other motion.
Figures 10 and 11 are clutches with two small pivotted pieces 1 and 2.
with their inner faces curved in order to fit the rod b. The clutch a,
Figures S and 9, is simply provided with a hole flaring at the outer ends.
N is a pivotted-catch to work against the wheel O and hold the rod 6
when raised by the revolution of the wheel. The ring or former i which
is attached to the carriage G fills the annular space at the bottom
between the core and the case, and is designed to form the female end of

page_text: of this ring, as before mentioned.
Figures 12 and 13 shew the ring or device for forming the male end Q,
indicating the shape which it is intended to give to the pipe. When a
joint of pipe is complete this ring is placed upon the top end whilst the
material is soft, and by being whirled or turned around thereon removes
a certain portion of the material through the space and by the edges R,
thereby imparting the proper tapering form to this end of the joint of
pipe.
In liew of using the blows of the tampor g' a continued pressure of a
flat trowel may be employed, such trowel being caused to rotate in the
annular space between the case and core, and press and compact the
material by such means instead of with the intermittent blows of the
tampor.
It is obvious that in this case the rod 6 or any device to which the
trowels might be attached will have a simple rotary motion and rise up
through the annular space as the joints of pipe increase in length.
Trowels may be attached to the lower end of the tamping rod g, and by
giving a simple rotary motion to the rod 6 the effect will be accomplished,
an additional rod or rods g being then employed if required.
I
By reversing the rod the sharpened end may be used for a drill.
It is obvious that the horizontal picce f, Figures 1 and 2, may be
loosely connected with the rod b, and facility would thus be afforded for
the tamping of pipe of an oval shape or of any other desired form.
Having now described and particularly ascertained the nature of the
said Invention, and the manner in which the same is or may be used
or carried into effect, I would observe in concluson that what I con-
sider to be novel and original, and therefore claim as the Invention
secured to me by the herein-before in part recited Letters Patent
is,—
First. The application and use of a clutch or lever connected with a
tamping, pressing, or drilling device in combination with a cam for
actuating the same, the whole being arranged and operating substantially
in the manner and for the purposes herein-before described and as illus-
trated by the accompanying Drawings.

page_text: Second. The combination with the before-mentioned clutch or lever
and cam of a forked device, substantially as and for the purpose herein-
before described and as illustrated by the Drawings.
Third. The employment of a box fitted with a removable sliding
portion for the purpose of containing the material to be moulded and
facilitating the removal of the mould, substantially as herein-before
described and illustrated by the Drawings.
In witness whereof, I, the said James William Butler, have to this
my Specification set my hand and seal, this Fifteenth day of
February, One thousand eight hundred and seventy-five.
JAMES WILLIAM BUTLER. (L.S.)