Year: 1896

page_text: Date of Application, 11th Aug., 1896
Complete Specification Left, 4th May, 1897-Accepted, 12th June, 1397
We CAMPBELL GROVE HARRISON, Engineer, and HENRY HOWARD, Manu-
facturer, both of Coombs Wood Tube Works, Halesowen, near Birmingham do
hereby declare the nature of our invention to be as follows:-
The object of this invention is to expedite the manufacture of fittings by
machinery and to improve the character of the work. To simplify the description
it will be assumed that the fitting is a tee but it will be obvious that parts of the
invention are applicable to other fittings.
A blank of suitable form is first punched out of a heated bar into a die by a
punch at the bottom of a vertical plunger the punch being so formed that it not
only cuts out the blank but also scarfs or bevels its edges where they are required
afterwards to be welded together. The plunger and punch theu rise and the
blank is ejected horizontally out of the die by a pusher on to rollers which convey
it on to a second die in the form of a semi-circular trough. A circular mandril is
then laid on to the blank and a vertical circular mandril is brought down onto the
horizontal mandril so forcing the blank into the die. Two dies each having a
semicircular vertical groove and a quarter circle horizontal groove are then caused
to advance horizontally from opposite sides and bend the blank around the mandrils.
The vertical mandril is then raised the dies retire and the blank with the horizontal
mandril in it is placed beneath a third vertical plunger which descends and forces
out the mandril. The blank is heated to a welding heat and is placed in a semi-
circular trough shaped die. One or two horizontal mandrils and vertical mandril
advance and enter the openings of the blank and then two saddle shaped dies
advance diagonally downwards in the same plane as the mandrils and entering the
angles of the tee weld up the blank being so timed that they dwell when home to
ensure a sound joint.
Preferably the whole apparatus is placed on a single bed plate the motious
being given by two horizontal shafts connected together by a vertical shaft and
bevel
gear. The upper shaft actuates the vertically moving tools by means of
eccentrics, cranks or cams whilst the lower shaft similarly actuates the horizontal
and inclined tools. The connecting rods are made in two parts joined together by
right and left hand screws so that their lengths can be adjusted. The mandrils
are connected to their plungers by locking levers so that they can be disconnected
and remain stationary whilst the plungers continue to reciprocate. In this
way two or more blows can be given by the dies whilst the mandrils remain in
place.
בד
10.1 1
1000
C. G. HARRISON.
HENRY HOWARD.

page_text: Improvements in Apparatus for Making Fittings for Metal Pipes.
We, CAMPBELL GROVE HARRISON, Engineer, and HENRY HOWARD, Manu-
facturer, both of Coombs Wood Tube Works, Halesowen, near Birmingham, 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 :-
The object of this invention is to expedite the manufacture of fittings by
machinery and to improve the character of the work. To simplify the description
it will be assumed that the fitting is a tee but it will be obvious that parts of the
invention are applicable to other fittings.
A blank of suitable form is first punched out of a heated bar into a die by a
punch at the bottom of a vertical plunger the punch being so formed that it not
only cuts out the blank but also scarfs or bevels its edges where they are required
afterwards to be welded together. The plunger and punch then rise and the blank
is ejected horizontally out of the die by a pusher on to rollers which convey it on
to a second die in the form of a semi-circular trough. A circular mandril is then
laid on to the blank and a vertical circular mandril is brought down onto the
horizontal mandril so forcing the blank into the die. Two dies each having a
semicircular vertical groove and a quarter circle horizontal groove are then caused
to advance horizontally from opposite sides and bend the blank around the mandrils.
The vertical mandril is then raised, the dies retire and the blank with the horizontal
mandril in it is placed beneath a third vertical plunger which descends and forces
out the mandril. The blank is heated to a welding heat and is placed in a semi-
circular trough shaped die. One or two horizontal mandrils and vertical mandril
advance and enter the openings of the blank and then two saddle shaped dies
advance diagonally downwards in the same plane as the mandrils and entering the
angles of the tee weld up the blank being so timed that they dwell when home to
ensure a sound joint.
Preferably the whole apparatus is placed on a single bed plate the motions
being given by two horizontal shafts connected together by a vertical shaft and
bevel gear. The upper shaft actuates the vertically moving tools by mcans of
eccentrics, cranks or cams whilst the lower shaft similarly actuates the horizontal
and inclined tools. The connecting rods are made in two parts joined together by
right and left hand screws so that their lengths can be adjusted. The mandrils
are connected to their plungers by locking levers so that they can be disconnected
and remain stationary whilst the plungers continue to reciprocate. In this
way two or more blows can be given by the dies whilst the mandrils remain in
place.
Figure 1 is a left hand end elevation, Figure 2 a front elevation and Figure 3
a right hand end elevation of a machine constructed according to this invention.
A is the main shaft carrying the pinion A¹ gearing with the wheel B' on the
shaft B.
C is a shaft driven from the shaft B by the shaft D and bevel gearing.
The shaft B has fixed to it the eccentrics B2, B3, B2, B3, B4, B and cam B
and the shaft C has fixed to it eccentrics C, C2, C3, C
A bar of iron or steel of suitable width and thickness is placed in a furnace and
brought to a white heat, then carried to the die a and under the punch b (shown to
a larger scale at Figures 4) and operated by the eccentric C2 this cuts the blank
to the shape and size necessary for the fitting to be produced, at the same time by
reason of the projection 61 on the punch scarfing or bevelling the edges required to
be welded together.

page_text: The blank is then pushed forward by the finger c (operated by the cam B
lever and weight e*) over a live roller d'into the die d and under the vertical man trile
operated by the excentric C'. The horizontal mandril f, is put on by hand in ti ne
to catch the downward stroke of the mandril e, the blank is pressel to the bottom.
of the die d (Figures 2 and 3). As the mandril e is descending, the horizontal
pressers operated by the eccentrics B2 B2 come towar.ls the partly bent biank,
and complete the closing or shaping of the fitting for welding. The mandril e is
held in its socket el by a locking lever e2 and after its first stroke to prevent
it from being withdrawn before the fitting is closed, the lever e is brought
over, and the plunger is then allowed to work freely till the lever e² is put back
h
into gear.
The fitting is then taken on the mandril f, to the plunger i operated by the
eccentric C³, which is placed at an angle to allow space in the centre for working
the finger c, this plunger drives the mandril clear of the fitting, the latter is then
raised to the proper welding temperature in a furnace and is carried to the die j
Figure 1. The two horizontal mandrils kk (one only of which is shewn) operated
by the eccentrics B B shoot forward in time to meet the vertical mindril t
operated by the excentric C and when this is in position it is released from the
socket m, by turning the handle n, and remains in the fitting till the operation of
welding is completed by the inclined dies o, o, operated by the eccentrics B³ B³.
One of the mandrils & may also be worked by a hand lever (uot shown) this would
generally be preferable when tees are operated upon to enable the use of a longer
mandril passing through the fitting, the left hand mandril k being out of gear as
shewn in Figure 1.
The dies o, o, are arranged to dwell long enough when making the final pinch to
keep the fitting in position until it is soundly welded.
The connecting ls of the various eccentrics are provided with right and left
hand screws as shown so that they may be lengthened or shortened to suit the
difference in thickness of metals.
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 :-
1. The combination of the dies a and d and finger c substantially as described.
2. The combination of reciprocating pressers h, a reciprocating socket el, a
mandril e and means for connecting the mandril to and disconnecting it from the
socket substantially as described.
3. Operating the punching and forming mechanism by two parallel continuously
rotating shafts substantially as described.
4. The combined means for forming the fitting ready for welding substantially
as described.
5. The combined means for welding the blanks substantially as described.
6. Apparatus for making fittings for metal pipes substantially as described and
shown in the drawings.
Dated this 20th day of March 1807
C. GROVE HARRISON..
HENRY HOWARD.