Improvements in or connected with the Swells of the Shuttle-boxes of Looms.
Year: 1890

page_text: Date of Application, 24th May, 1890
Complete Specification Left, 24th Feb., 1891-Accepted, 23th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Swells of the Shuttle-boxes
of Looms.
We, HENRY LIVESEY, of Greenbank Iron Works, Blackburn, in the County of
Lancaster, Machinist, and THOMAS GILL, of Greenbank Iron Works, aforesaid,
Manager, do hereby declare the nature of this invention to be as follows:-
This invention relates to the back swell or that part of the shuttle box of looms
with which the shuttle comes in contact and which retards or stops its motion at the
end of each pick, and is designed with the object of providing a swell which may
swivel or be canted at an angle to either side of a plane parallel to that in which
the swell is placed in a direction at right angles to its longitudinal axis and,
preferably, that may also swivel in either direction parallel therewith.
It consists essentially in pivoting or supporting the swell at the back on a universal
or other joint either in the centre or at the ends, which will allow it a movement in
either direction transversely about its central axis.
The invention may be carried out in several ways, of these we at present prefer
to form the swell with a projecting stud or lug in the centre of the back, rounded at
the end to fit into a cup or other socket. This cupped socket may be formed in or
carried at the end of a spring which holds the swell in position. The spring is
attached to the back of the shuttle box or to the slay adjoining the shuttle box.
One or two small brackets placed at the back or ends of the swell keep it from
being pushed out of position. Instead of being supported by a cupped or other
socket at the centre upon which it can swivel the swell may be supported by a small
trunion or pivot at one or both ends; on a spring socket which will allow it to
rotate in either direction about its longitudinal axis, or similar trunions or pivots
may be applied to the sides upon or against which the springs may rest. We do not
desire a movement either longitudinally or laterally.
We are aware that the swell has in the ordinary way been pivoted at one end also
that it has been pivoted on a bracket hung from a centre at or near the top of the
shuttle box, in both cases the pivot or socket being rigid and capable of allowing a
movement only in one direction though in the latter case the face is inclined or
bevelled over as it moves backwards and such do not form any part of our
invention.
Doted this 22nd day of May 1800
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with the Swells of the Shuttle-boxes
of Looms.
We, HENRY LIVESEY, of Greenbank Iron Works, Blackburn, in the County of
Lancaster, Machinist, and THOMAS GILL, of Greenbank Iron Works, aforesaid,
Manager, 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 the back swell or that part of the shuttle box of looms
with which the shuttle comes in contact and which retards or stops its motion at the
end of each pick and is designed with the object of providing a swell which may
swivel or be canted at any angle to either side of a plane parallel with its face in a

page_text: direction at right angles to its longitudinal axis and preferably also in a direction at
right angles to its transverse axis.
It consists essentially in pivoting the swell upon a universal or swivelling joint
either at the centre or the ends which will allow it a movement either to right or
left about its longitudinal axis and preferably also about its transverse axis.
The invention will be fully described with reference to the annexed drawings in
which as an example on Sheet 1 the swell is shown pivoted at or near the centre
with a single universal joint supported by a spring upon which the swell is capable
of canting in either direction and at the same time of moving bodily backwards as
force or pressure is applied to it and on Sheet 2 it is shown pivoted at the ends and
at the sides.
Fig. 1, front elevation.
Fig. 2, longitudinal sectional plan.
Fig. 3, transverse sectional elevation.
Fig. 4, back elevation.
Fig. 5, back elevation with pivots at ends.
Fig. 6, longitudinal sectional plan of same.
Fig. 7, back elevation with pivots at sides.
Fig. 8, transverse sectional elevation of same.
The swell A, we form with a projecting stud or pivot a at the centre of the back,
rounded or shaped at the end to fit into a cup or socket forming a universal joint
or bearing upon which it is free to cant or turn in either direction. The cup or
socket b is formed in or carried at the end of a spring B, preferably of the shape
shown in Fig. 2, which not only provides a bearing for the pivot a but also exerts a
pressure to hold the swell in position. The spring B is attached to the shuttle box
by the screws b' and by its use as shown no lever or bracket is required to carry the
swell or to which to pivot it. The ends a' of the swell A, extend in the ordinary
way beyond the slot in the shuttle box to limit the forward projection of the swell
but these ends a' are rounded to allow of the canting movement of the swell about
its central axis. At each end of the swell we place a small bracket C, at the back
of the ends of the swell and out of contact with it to prevent its being pushed back
out of position.
Instead of pivoting the swell upon a cupped or other socket forming a universal
joint at the centre upon which it can move in either direction the movement about
its longitudinal axis to either side may be obtained by forming the ends a' into
pivots or trunnions and applying a light spring D, to each as in Figs. 5, and 6, or
by supporting or pivoting each of said ends in a spring socket or bearing which will
allow it to rotate in either direction, or by forming similar trunnions a¹¹ one at each
side upon which the springs D, will rest as in Figs. 7 and 8.
By constructing and arranging the swell in this way we secure an even and equal
pressure upon the shuttle as its position in the shuttle box alters as the swell can
while being moved backwards by the shuttle cant over in either direction to present
the greatest amount of bearing surface to the shuttle its movement being limited by
the size of the slot E, in which it is placed.
We are aware that the swell has in the ordinary way been pivoted to a rigid
bracket at one end also that it has been pivoted by a bracket or lever cast in one
piece with it hung from a centre at or near the top of the shuttle box, in both cases
the pivot or socket being rigid and capable of allowing a movement backwards and
forwards only in one direction though in the latter case the face is inclined over as
it moves backwards and such do not form any part of our invention.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. A swell for loom shuttle boxes pivoted upon an universal joint either at the
centre or ends so as to allow it a movement either to right or left about both its
longitudinal and transverse axes substantially as described.

page_text: 2. A swell for loom shuttle boxes having a stud or pivot projecting from the
centre of the back and a spring carrying a cupped socket with which the pivot
engages and which supports and holds the swell in position substantially as
described.
3. A swell for loom shuttle boxes constructed and arranged substantially as
described and shown with reference to Figs. 1-4, with reference to Figs. 5-6, or
with reference to Figs. 7-8.
Dated this 21st day of February 1891
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.