Improvements in the Construction of "Swells" employed in Looms for Weaving.
Year: 1890

page_text: Date of Application, 26th Nov., 1890
Complete Specification Left, 19th Aug., 1891-Accepted, 19th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Construction of "Swells" employed in Looms
for Weaving.
We, WILLIAM HARKER, of 51, Steeley Lane, Chorley, in the County of
Lancaster, Overlooker, and JOHN GRAYSON of 2 McDonald's Lane, Corporation
Street, Manchester, Mill. Furnisher, do hereby declare the nature of this
invention to be as follows:-
An
This invention relates to improvements in the construction of that class of
"swells" employed in looms for weaving which are formed of tempered plate steel
bent or curved to the required shape. Our improved tempered plate steel swell
has two back lips which rest against the back part of the backboard of the
shuttle box at each end of the usual slot or opening through which the body
part of the swell protrudes. One of these lips namely the one nearest the reed
is fastened to or may be in one piece with the free end of a back spring extending
horizontally behind the swell and secured to the backboard beyond the opposite
end of the slot or opening by means of a screw or screws in the usual manner.
adjusting screw bolt and lock nuts of the usual kind for regulating the amount of
pressure by the back spring on the swell are also provided. We preferably so
form the swell that its face at the part nearest to the reed being the part with
which the shuttle first comes in contact when entering the shuttle box is flush
with the face of the backboard the remaining part of the swell face being so
formed as to gradually project further and further through the slot or opening.
The action of our improved swell upon the shuttle as it enters the shuttle differs
from the action of swells as ordinarily constructed that is to say whereas swells
of the ordinary plate steel kind or pivoted cast iron swells have their free end at
that end of the slot or opening nearest to the reed our improved swell is so
constructed as that its free end is at that end of the slot or opening furthest from
the reed thus being enabled to impart a more gradual and suitable pressure upon
the shuttle as it enters the shuttle box and entirely obviating the tendency of the
shuttle to become jammed against the swell which obtains in the ordinary
arrangements of swells hereinabove indicated.
Dated this 26th day of November 1890.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Construction of Swells employed in Looms
for Weaving.
We, WILLIAM HARKER, of 51 Steeley Lane, Chorley, in the County of
Lancaster, Overlooker, and JOHN GRAYSON, of 2 McDonald's Lane, Corporation
Street, Manchester, in the same County, Mill Furnisher, 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 improvements in the construction of that class of swells
employed in looms for weaving which are formed of tempered plate steel bent or
curved to the required shape. Our improved tempered plate steel swell has two
back lips which rest against the back part of the backboard of the shuttle box at each
end of the usual slot or opening through which the body part of the swell protrudes.

page_text: One of these lips namely the one nearest the .reed is fastened to or may be in one
piece with the free end of a back spring extending horizontally behind the swell
and secured to the backboard beyond the opposite end of the slot or opening by
means of a screw or screws in the usual manner. An adjusting screw bolt and
lock nuts of the usual kind for regulating the amount of pressure by the back spring
on the swell are also provided. We preferably so form the swell that its face at
the part nearest to the reed being the part with which the shuttle first comes in
contact when entering the shuttle box is flush with the face of the backboard the
remaining part of the swell face being, so formed as to gradually project further
and further through the slot or opening.
The accompanying drawings illustrate in plan view our said improved loom
swell attached to the ordinary backboard of a loom shuttle box (the backboard
being shewn in section).
Fig. 1 shews the swell in its normal position.
Fig. 2 shews its altered position when partially pressed back by the incoming
shuttle; and
Fig. 3 shews its position when the shuttle has fully passed into the shuttle box.
a and b are the two back lips resting against the back of the backboard c. The
lip a is shewn in one piece with the free end of the back spring d secured to the
backboard by the screw e and having an adjusting screw bolt and nut for
regulating the amount of pressure on the back spring d. R is that end of the
backboard nearest the reed that is to say that end of the shuttle box at which the
shuttle enters.
It will be observed that our improved swell constitutes a combination of two
springs the swell or face part g forming one spring and the back spring d the other-
the back spring d exerting the main part of the pressure against the shuttle as it enters
the shuttle box (see Fig. 2) with the lip b as a fulcrum and the spring g affording
along with the back spring d a joint or double pressure (with the lip a as a
fulcrum) on the shuttle as it further enters the shuttle box (see Fig. 3).
The action of our improved swell upon the shuttle as it enters the shuttle box
differs from the action of swells as ordinarily constructed that is to say whereas
swells of the ordinary plate steel kind or pivoted cast iron swells have their free
end at that end of the slot or opening nearest to the reed our improved swell is so
constructed as that its free end is at that end of the slot or opening furthest from
the reed thus being enabled to impart a more gradual and suitable pressure upon
the shuttle as it enters the shuttle box and entirely obviating the tendency of the
shuttle to become jammed against the swell which obtains in the ordinary arrange-
ments of swells hereinabove indicated.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
A loom swell consisting of a spring curved or formed substantially to the shape
indicated in the drawings having its free extremity in the form of a lip such as b
at that end of the ordinary slot or opening in the backboard of the shuttle box
furthest from the reed and having a second lip such as a at the opposite end of the
said slot or opening the whole being arranged and operating substantially as herein-
above described and shewn in the drawings.
Dated this 19th day of August 1891
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.