Year: 1896

page_text: Date of Application, 7th Aug., 1896-Accepted, 29th May. 1897
BOCKets, etc.
Fig. 2 is a front elevation of the same.
Fig. 3 is a longitudinal section through line x-x of Figure 1.
Figure 4 is an end elevation of the same."
Fig. 5 is an end view partly in section of the mandrel, the roll, the guide, and
former, and showing also a piece being formed into a pipe coupling.
Figure 6 is an enlarged end view of adjustable housing or bearing for the
stripper.
Fig.
7 is a side or end view of the same partly in section..
Fig. 8 is an elevation of socket or coupling.
Our invention relates to apparatus for rolling pipe sockets, couplings, etc.
Heretofore, as far as we are aware, pipe sockets and couplings have been made
by hammer, it being necessary to heat and bend the same in, substantially, the
shape required, 'place the same on a mandrel, and weld the ends by hammer.
This operation is expensive, requiring the aid of a number of men, and consuming
a considerable period of time.
The object of our invention is to produce a device or apparatus, by the use of
which a bar or plate of metal of the requisite size, when properly heated, may
be rolled into a pipe socket or coupling, instead of being as heretofore formed by
hammering; and to this purpose consists of the novel construction and arrangement
of parts hereinafter described, reference being had to the accompanying drawings,
forming part hereof, in which like letters and numerals indicate like parts
wherever they occur.
Referring now to said drawings, 1 indicates a cylinder having a piston 2
projecting through both ends of the same, the ends or heads of said cylinder having
stuffing boxes to admit of this; the outer end of said piston terminates in or carries
a rotary plunger or shaft 3, which terminates in or carries a mandrel 4; or as
shown in the drawings, said shaft may be screw threaded at 5, for the purpose of
enabling the correspondingly threaded cone shaped cap 6 being secured thereto;
the mandrel 4 being driven into or otherwise suitably secured in the outer end of
the said cap. Said mandrel projects through the stripper 7, which is journaled
in bearings 8; said shaft or plunger 3 is journaled in bearings 9 and 10, which are
adapted to slide backward and forward by the reciprocation of the piston, plunger,
and mandrel, as hereinafter specified, the slide 11 formed in the top of the
standards 1111' supporting the outer end of said plunger.
12-12 are housings in which are supported the roll 13, said roll being adapted
to be adjusted therein by the screws 14-14, operated by the levers 15-15, and
to be driven by power transmitted through the main power shaft 16, having a
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page_text: sprocket wheel 17 mounted thereon, which communicates power by means of a
sprocket chain 18 to a similar sprocket wheel 19 on the outer end of the shaft 20,
which is journaled in bearings formed in the sides of said housings. On the outer
end of said shaft 20, is a small cog wheel 21, which is rigidly secured thereon and
meshes with and transmits power to the large cog wheel 22, rigidly secured to the
shaft 23, whereon said roll 13 is likewise rigidly secured, whereby said roll is caused
to rotate.
24 and 24 are sprocket wheels mounted on said power shaft 16 at the ends
respectively of the same, and transmit power to similar sprocket wheels 25 and 25¹
respectively, mounted on the shafts 26 and 3 respectively, by means of the
sprocket chains 27 and 27', whereby said shafts are rotated in unison. The outer
side of said sprocket wheel 251, is provided with a collar 28, having recesses 29
therein for the reception of the ends of the clutch bars or springs 30-30, the
other ends of which are, respectively, secured to the inner sides of the housings 12,.
in which the shaft 3 is mounted, for the purpose of securing said sprocket wheel
rigidly upon said shaft. One end of said shaft 26 is journaled in the bearings 31,
formed in the lower end of the outer housing, the other end being journaled in
bearings 32, formed in the standard 33, which is bolted or otherwise secured upon
the bed plate 34. The inner end of said shaft 26, is provided with a screw 35,
for the purpose of securing thereto the bevel or cone shaped cap 36, the inner
face of which is grooved correspondingly with the opposite face of the stripper 7.
The stripper 7 and the cap 36 are arranged to impinge upon or bear against the
opposite edges or rims of the roli 13. The outer face of, said stripper 7, is
provided with an inclined projection or lug 37, which is adapted to impinge against
a pin 38 on the face of the cone-shaped cap 6, whereby said stripper is clutched
by the shaft 5 and caused to rotate therewith.
Immediately beneath the roll 13, is secured a guide or deflecting roll 39,
mounted on the shaft 40, which is journalled in the adjustable bearings a, secured
in the slot in the upper side of the standard 40', which is likewise adjustably
secured, by means of screw-bolts and slotted flanges, to the top of the standard 41,
which is suitably secured upon the bed-plate 34; the outer ends of the adjustable
bearings a are secured to the screws 42, whereby said deflecting or guide roll may
be advanced towards or withdrawn from the mandrel and welding roll to suit
different thicknesses of blanks A being formed between the same.
43 is a guide groove formed in the face of standard 40', in which said deflecting
or guide roll is mounted, whereby when the blank or piece A is inserted between
the mandrel and welding roll, the rotation of the same carries said blank against
the deflecting roll and causes said piece to follow said guide groove and coil around
said mandrel until the adjacent ends are brought beneath the welding roll and
mandrel, when they are welded.
By reversing the lever 44, which controls the valve or cut off, the piston, the
plunger, shaft 3 connected thereto, the bevel cap 6 and mandrel connected, thereto,
are caused to move a distance sufficient to withdraw the mandrel from the socket 45,
formed.in the cap 36, and from beneath the roll, whereby the mandrel is pulled out
of the coupling formed, which coming in contact with the stripper, is held until
the mandrel is entirely withdrawn, thus permitting the coupling to fall upon any
suitable chute, as shown in Fig. 5.
The operation of our device is as follows, viz.:
Power being applied to the mechanism, the roll 13 is caused to rotate, also the
shaft 3, the shaft 26, and the cap 36 carried thereon, are likewise rotated in the
same direction, but much more rapidly than the roll. The engineer by operating
the lever 44, which controls the valve or cut off, causes steam or some equivalent
agent to be admitted at the outer head of the cylinder, which causes the piston,
plunger, and mandrel, together with their bearings, to slide towards the rim or
edge of the roll 13, a distance sufficient to bring the mandrel immediately beneath
the same, the blank A being heated-in any suitable heating furnace, is seized by a
pair of tongs, and is thrust between the maudrel and roll 13, and is carried

page_text: rearwardly until the same is deflected by the roll 39, and is caused to coil around
the mandrel until the rotary action of said roll and mandrel welds the ends thereof.
The engineer, or person operating the machine, by reversing his lever, and slightly
releasing the housings of the roll, causes the piston, plunger, and mandrel to be
withdrawn from beneath the roll 13, and in such withdrawal the socket or coupling
formed is pressed against the inner face of the stripper, and is thus withdrawn or
released from the mandrel and enabled to fall onto the guide, and thence into a.
trough along the side of the machine.
It is obvious that by changing the shape of the mandrel, the roll, and the sizes
thereof, and the size of the gear wheel 17 on the power shaft, that different
sized articles may be formed by our device, without departing from this
invention.
We are aware that prior to our invention, it has been proposed to roll metal
bars into links, by passing the bars between a mandrel and a roll, the former of
which was divisible at the middle into two sections, each section being supported
at one end of a short shaft, which shafts were separately and independently geared
to a common driving shaft.
Such a construction is not however at all adapted for work of the character
accomplished by our improvements, namely, relatively long pipe sockets, couplings,
and similar articles. It is practically impossible to force the adjacent faces of the
sections of the divisible mandrel or forming roller into such close contact as not.
to leave a slight peripheral groove midway of the length of said roll. The presence
of such a groove causes the forming of a fin or rib on the inner surface of the
finished article, which renders it unsuited for use.
It will be seen that in our construction, the mandrel is made integral with the
power shaft, and continuous from end to end. And also that by connecting the
power shaft with the piston, we are able to hold the same firmly in operative
position. The ends of the blank extending into the grooves formed in the adjacent
faces of the stripper 7, and cap 36, insure that the blank will be held securely
against the mandrel. By having the mandrel fitted into a socket, as at 45, in a
bearing or support, like that at 36, we not only can hold the mandrel in alignment
under the powerful pressure that is exerted, but can also form a finished end upon
the coupling or socket being rolled. It is generally desirable to have the ends of
the coupling or sockets rounded or tapered slightly, as shown in Fig. 8. Το
provide for this, we form suitably shaped cavities in the two parts at 7 and 36,
these being around the mandrel apertures or cavities in the same parts.
Some of the heated metal at the ends is crowded into each of these cavities.
Then, in order to allow the article to escape after the welding action, one of the
said parts 7 and 36, is permitted to move somewhat longitudinally. We at present
prefer to have the stripper 7 thus move, provision being made for it to move as
shown in Fig. 7. At the proper time it is stopped in some suitable way, as by
having its end flanges impinge on the stand 8, or the box therein, and then as the
mandrel continues moving backward, the end of the stripper engages positively
with the end of the coupling or socket and forces it off the mandrel. The pin 38
can escape entirely from the clutch jaw 37, and from the stripper as the mandrel
recedes. But when it moves forward at the next action, there will be another
engagement effected between the pin and the stripper.
It will be seen that the stripper at 7, and the part at 36, are of the nature of
abutments, situated at the ends of the socket or coupling being welded, serving not
only as supports for the mandrel, but as walls for properly shaping the ends of the
article; which abutnients are both, during the welding operation, held stationary.
relatively to the longitudinal axis of the article being welded, but of which at
least one is movable longitudinally of said axis after the welding has been
effected.
We do not wish to be limited to the use of a supplemental stand, as at 8, to serve
is a support and a stop for the stripper, though we prefer such construction.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim, is:
First. In a machine for rolling pipe sockets, couplings and similar articles, the
combination with a compressing or welding roll, and power devices for rotating
said roll, of a inandrel, integral from end to end; means for reciprocating said
mandrel and positively holding it beneath the welding roll, and means for rotating
the mandrel when in position below the welding roll, substantially as set forth.
Second. In a machine for rolling pipe sockets, couplings and similar articles, the
combination with a compressing or welding roll, and power devices for rotating
said roll, of a mandrel; means for reciprocating the mandrel and positively holding
the same beneath the welding roll; means for rotating the mandrel when in position
below said roll; and means for forcing the finished article from the mandrel as
the same is moved from its operative position, substantially as set forth.
Third. In a machine for rolling pipe sockets, couplings and similar articles, the
combination with a compressing or welding roll, and power devices for rotating
said roll, of a rotary mandrel; means for holding the mandrel below the welding.
roll; a stripper extending concentric with the mandrel; and means for reciprocating
the mandrel, whereby the stripper will force the finished article from the mandrel,
substantially as set forth..
Fourth. In a machine for rolling pipe sockets, couplings and similar articles, the
combination with a compressing or welding roll, and power devices for rotating
said roll, of a rotary mandrel; means for holding the mandrel below the welding
roll; a stripper extending around the mandrel adjacent to the welding roll, and
adapted to form a side guide for the article being rolled; and means for reciprocating
the mandrel longitudinal through said stripper, substantially as and for the purpose
set forth.
Fifth. In a machine for rolling pipe sockets, couplings and similar articles, the
combination of the welding roll, the mandrel, and two abutments situated
respectively at the ends of the socket or coupling when in position for welding
and one being adapted to engage positively therewith to force it from the mandrel,
substantially as and for the purpose set forth..
Sixth. In a machine for rolling pipe sockets, couplings and similar articles, the
combination of the external compressing or welding roll; the interior mandrel
adapted to extend through the socket or coupling being welded; means for
reciprocating said mandrel; a support for the free end of the mandrel when in the
operative position; and means supplemental and adjacent to the mandrel for
engaging positively with the end of the coupling or socket, and forcing it from the
end thereof, substantially as and for the purpose set forth.
Seventh. In a machine for rolling pipe sockets, couplings and similar articles,
the combination of the exterior welding or compressing roll; the interior
longitudinally movable mandrel; the detachable support for the end of the inandrel
on one side of the central transverse vertical plane of the welding roll; the
cylinder for steam or equivalent agent; the piston therein, and means connecting
said piston with the mandrel, and adapted to move the free end of the latter into
and out from the said support, substantially as and for the purpose set forth.
Eighth. In a machine for rolling pipe sockets, couplings and similar articles, the
combination of the exterior welding or compressing roll; the mandrel secured at
one end to a movable carrier and adapted to be held across the transverse plane of
the welding roll, and the bearing or support adapted to detachably receive the end
of the mandrel, substantially as and for the purpose set forth.
Ninth. In a machine for rolling pipe sockets, couplings and similar articles, the
combination of a welding roll; a mandrel; a rotary carrier for the mandrel;
a rotary support for the free end of the mandrel; and means adapted to positively
engage with the end of the socket or coupling to force it from the mandrel,
substantially as set forth.

page_text: Tenth. In a machine for rolling pipe sockets, couplings and similar articles, the
combination of a welding roll; the mandrel; the two abutments situated at an
end of the socket or coupling which is being welded, and one of which is adapted
to move along the axis of the welding article; and means for holding both of said
abutments stationary as to said axis, substantially as set forth.
Eleventh. In a machine for rolling pipe sockets, couplings and sinilar articles,
the combination of a welding roll; the mandrel adapted to support the metal for
forming the socket or coupling; and the intermittingly rotating stripper,
substantially as set forth.
Twelfth. In a machine for rolling pipe sockets, couplings and similar articles,
the combination of a welding roll; the mandrel for supporting the socket or
coupling while welding; means for moving the mandrel, and the stripper adapted
to move longitudinally of the coupling or socket, substantially as set forth.
Thirteenth. "In a machine for rolling pipe sockets, couplings and similar articles,
the combination of a welding roll; the mandrel for supporting the coupling or
socket while welding, and the sliding intermittingly rotating stripper, substantially
as set forth.
Fourteenth. In a machine for rolling pipe sockets, couplings and similar articles,
the combination of a welding roll the mandrel for supporting the coupling or
socket while welding; the stripper mounted loosely upon the mandrel; and means
for detachably connecting together the mandrel and stripper, substantially as set
forth.
Fifteenth. In a machine for rolling pipe sockets, couplings and similar articles,
the combination of the welding roll; the mandrel fór supporting the coupling or
socket while welding; the sliding stripper; and a standard or projection carried
by the frame to stop the stripper, substantially as set forth.
Sixteenth. In a machine for rolling pipe sockets, couplings and similar articles,
the combination of a welding roll; the longitudinally reciprocating non rotary
carrier or advancing devices for the mandrel, substantially as set forth.
Seventeenth. In a machine for rolling pipe sockets, couplings and similar articles,
the combination of a welding roll; the longitudinally reciprocating mandrel; the
standards at 9, 10, which support the mandrel; the stripper; and a supplemental.
bearing or standard for the stripper, substantially as set forth.
Eighteenth. In a machine for rolling pipe sockets, couplings, etc. the combination.
of a shaft or plunger terminating in a mandrel, and having near the outer end
thereof a cap; said shaft being adapted to be reciprocated longitudinally; a roll
suitably mounted in bearings, and located immediately above said mandrel and
adapted to be elevated and lowered in its housing; a stripper suitably mounted
between the cap on said reciprocating shaft and the edge or rim of said roll, and
adapted to rotate and slide backward and forward in its bearings; a cap or head
mounted upon an auxiliary shaft opposite and in line with said mandrel, said cap
impinging upon the edge or rim of the roll opposite to that impinged upon by the
stripper; means to rotate said roll and said last mentioned shaft, and means to
reciprocate said mandrel, substantially as set forth.
Nineteenth. The combination of a cylinder, a piston therein connected with a
shaft, the end of which terminates in a mandrel adapted to be rotated, and provided
with a bevel cap a power shaft geared with said last mentioned shaft; shaft 20
suitably geared with said power shaft; shaft 23 parallel with and between said
before mentioned shafts, and suitably geared to shaft 20; shaft 26 geared with said
power shaft; said shaft 26 having a grooved cap 36; a stripper suitably mounted
between the bevel caps, mounted, respectively, upon the shafts 3 and 26, the inner
face of said stripper being correspondingly grooved with the inner face of the
bevel cap 36 on the shaft 26, substantially as herein described.
Twentieth. The combination of a cylinder, a piston therein connected with a
shaft, the end of which terminates in a maudrel adapted to be rotated, and provided
with a bevel cap; a power shaft geared with said last mentioned shaft; shaft 20
suitably geared with said power shaft; shaft 23 parallel with and between said.

page_text: before mentioned shafts, and suitably geared to shaft 20; shaft 26 geared with
said power shaft; said shaft 26 having a grooved cap 36; a stripper suitably
mounted between the bevel caps, mounted respectively upon the shafts 3 and 26,
the inner face of said stripper being correspondingly grooved with the inner face
of the bevel cap 36 on the shaft 26; and a deflecting or guide roll to the rear of 5
and beneath the welding roll and mandrel, substantially as berein described.
Dated this 7th day of August 1896.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.