An Improved Appliance for Outting Off Earthenware Pipes Made in Sanitary Tube Making Machines.
Year: 1891

page_text: Date of Application, 10th Sept., 1891
Complete Specification Left, 10th June, 1892-Accepted, 27th Aug., 1892
PROVISIONAL, SPECIFICATION.
An Improved Appliance for Outting Off Earthenware Pipes Made
in Sanitary Tube Making Machines.
JOHN SAMUEL Pullan, WiLLIAM HUTCHINSON MANN & JOHN GILL, all
of The Cambrian Works, Elland Road, Leeds, in the County of York, Engineers
& Brick Machine Makers, do hereby declare the nature of this invention to be as
follows:-
The object of our invention is to rapidly effect the cutting off of earthenware
pipes in ordinary sanitary tube making machines, & to do this:
We place inside an ordinary bell core of a pipe die a circular box having within
it a small spur pinion & 2 toothed racks having knives or cutters attached thereto
which are moved inwards & outwards by the pinion. The pinion is affixed to a
centre spindle which passes through the hollow spindle that carries the bell core
& is made to revolve by any suitable means. The circular box is also placed on
the same spindle but is free to revolve on same.
E
The action of the cutter is as follows: On the centre spindle being revolved, the
two racks with cutters are moved simultaneously outwards by the pinion until the
latter locks with the end of the racks, when the whole apparatus, box, racks &
cutters move round together & thereby quickly sever the pipe from the column of
clay & on the spindle being revolved in the opposite direction the racks are moved
inwards clear of the column & so allow the next pipe to be made & descend.
We may employ one or any number of racks & cutters in the above
arrangement.
Dated this 8th day of September 1891
JOHN SAMUEL PULLAN.
WM. H. MANN.
JOHN GILL.
COMPLETE SPECIFICATION.
An Improved Appliance for Cutting Off Earthenware Pipes Made
in Sanitary Tube Making Machines.
We, JOHN SAMUEL PULLAN, WILLIAM HUTCHINSON MANN, and JOHN
GILL, all of The Cambrian Works, Elland Road, Leeds, in the County of York,
Engineers, and Brick Machine Makers, do hereby declare the nature of this inven-
tion 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 our invention is to rapidly and easily effect the cutting off of
earthenware pipes after they have been formed in an ordinary sanitary tube or pipe
making machine, and to accomplish which we place within the bell cover of the
pipe die, a circular box containing a small pinion wheel, gearing with two horizontal
toothed racks provided at their extremities with cutters which are caused to
reciprocate backwards and forwards by means of the said pinion. In addition to
the reciprocatory motion of the said knives they are caused to swivel horizontally
in doing which the earthenware tube is severed.
In order that our invention may be more clearly understood, we will make
reference to the accompanying sheet of drawings illustrative thereof, wherein
Fig. 1 is a vertical section of the upper portion of a sanitary tube making
machine, and
Fig. 2 is a cross section taken through the line a band looking underneath the
parts.

page_text: A represents the die which forms the flange of the sanitary tube, and B is the
sanitary bell cover of the pipe die. This bell cover is attached to the bottom of
the stationary hollow spindle C within which is mounted a vertical shaft D having
fixed on its upper end a bevil wheel E in gear with a corresponding bevil wheel F
fixed on the horizontal shaft G supported in bearings H and I. We place loosely
on the lower end of the vertical shaft D a circular box J grooved at c in which
grooves the cutting knives & and e are free to slide backward and forward, and we
also fix on the bottom of the shaft D a pinion wheel K in gear with two toothed
racks L and M projecting from which are the cutting knives & and e.
The action of the apparatus is as follows:-
When a sanitary tube has been formed in the ordinary and well known manner,
the operative moves a toothed segment lever (not shewn in the drawings) in gear
with the pinion wheel N on the ends of the horizontal shaft G, the motion of which
is transmitted to the vertical shaft D and to the pinion wheel K on the bottom
thereof, whereby the two racks are caused to move outwardly in the direction of
the arrows marked thereon, in doing which, they pierce the earthenware Lube but
when the pinion wheel K arrives at the end of the teeth in the racks as shewn in
plan Fig. 2 it can revolve no further and becomes locked, but on the continued
rotary motion of the vertical shaft D the box J together with the knives are
moved bodily around, the motion of which severs the tube from the columu of clay
above it; but when the operative moves the segment lever in the opposite way,
the action of the parts just described is reversed and the racks drawn inwards
clear of the column so as to allow the next pipe to be made and to descend for the
purpose of being severed in like manner to that already described. It is obvious
that instead of employing two racks and cutting knives, that one may be employed,
but in this case the knife would have to make one complete revolution, whereas
when two knives are used they only make half of a revolution.
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 :-
Firstly. In a sanitary tube making machine, the combination therewith of knives,
made to penetrate and swivel upon their axis, so as to sever the column of clay, in
the manner substantially as herein shewn and described.
Secondly. In a sanitary tube making machine, the combination therewith of
cutters, operated in the manner substantially as herein shewn and described.
Dated this 9th day of June 1892.
TASKER & CROSSLEY,
Halifax, Agents.