IMPROVEMENTS IN LOOMS FOR WEAVING.
Year: 1882

page_text: LETTERS PATENT to John Hodgkinson and James Hodgkinson both of
Blackburn in the County of Lancaster for an invention of "IMPROVEMENTS
IN LOOMS FOR WEAVING.".
PROVISIONAL SPECIFICATION left by the said John Hodgkinson & James
Hodgkinson at the Office of the Commissioners of Patents on the 28th March
1882.
JOHN HODGKINSON and JAMES HODGKINSON, both of Blackburn in the County
of Lancaster "IMPROVEMENTS IN LOOMS FOR WEAVING."
This invention of improvements in looms for weaving has reference to an
improved construction of parts whereby the action of the rocking lever and the
catch or pawl upon the ratchet wheel which, through the medium of a train of
geared wheels, rotates the taking up beam or roller may be rendered more certain
and reliable than heretofore.
According to our invention the upper extremity of the rocking lever carrying
the catch or pawl is provided with a pair of corresponding grooves or recesses, one
at the front and another at the back, which receive a cross bar or pivot formed
upon the end of the catch or pawl. The pivot is arranged to fit easily within
either of the grooves or recesses and is held therein by a suitably formed metal cap
secured to the rocking lever by a screw bolt and nut.
By the arrangement above described the same pattern of rocking lever and
catch is available for both sides of the loom, thereby dispensing with the necessity
of employing right and left hand levers as heretofore; whilst the improved mode
of mounting or supporting the catch or pawl renders its action certain and reliable
thus obviating irregular rotation of the catch wheel and consequent irregular drag
upon the warp which obtains in all arrangements for a similar purpose hitherto
known to us.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Hodgkinson and James Hodgkinson in the Great Seal
Patent Office on the 26th September 1882..
JOHN HODGKINSON and JAMES HODGKINSON, both of Blackburn in the County
of Lancaster: IMPROVEMENTS IN LOOMS FOR WEAVING.
This Invention of improvements in looms for weaving has reference to an
improved construction of parts whereby the action of the rocking lever and the
catch or pawl upon the ratchet wheel which through the medium of a train of
geared wheels rotates the taking up beam or roller may be rendered more certain
and reliable than heretofore.
According to our Invention the upper extremity of the rocking lever carrying
the catch or pawl is provided with a pair of corresponding grooves or recesses one
at the front and another at the back which receive a cross bar or pivot formed
upon the end of the catch or pawl. The pivot is arranged to fit easily within
either of the grooves or recesses and is held therein by a suitable formed metal
cap secured to the rocking lever by a screw bolt and nut.
In the accompanying drawings Figs. 1 and 2 are side views and Fig. 3 an edge
view of one form of rocking lever constructed according to our Invention. The
rocking lever is supported at the fulcrum or axis a bis the catch or pawl provided
with the cross bar or pivot e the catch b working into the ratchet wheel d The
catch or pawl b is shewn detached in plan view in Fig. 4. ee are corresponding
grooves or recesses which receive the pivot c and f is a metal cap secured to the
rocking lever by the screw bolt and nut g thereby holding the catch or pawl b in
position. Figs. 5 and 6 are inside and outside views of the metal cap f and it
will be seen on reference to the Drawings that the catch or pawl and the metal
cap may be mounted upon either side of the rocking lever as may be required.
in Figs. 2 and 3 the upper end of the rocking lever is shewn without the catch
or pawl and metal cap in order that the arrangement for making our improved
rocking lever reversible may be better understood..
We have only shewn our improvements as applied to one form or pattern of
rocking lever but the same arrangements are equally applicable to the several
forms, or patterns of rocking levers which vary somewhat in configuration but
which are similarly employed to actuate the ratchet wheel by means of a catch
or pawl.
1
By the arrangement above described the same pattern of rocking lever and
catch is available for both sides of the loom that is to say for either right or left
hand looms thereby dispensing with the necessity of employing right and left
hand levers as heretofore; whilst the improved mode of mounting or supporting
the catch or pawl renders its action certain and reliable thus obviating irregular
rotation of the catch wheel and consequent irregular drag upon the warp which
obtains in all arrangements for a similar purpose hitherto known to us.
Having now described the nature of our Invention and explained the manner in
which it may be carried into practical effect we would have it understood that
we do not limit ourselves to the precise arrangement shewn in the drawing, so long
as the distinctive character of our Invention be retained; but what we consider to
be novel and original, and therefore claim as the Invention secured to us by the
herein before in part recited Letters Patent is as follows:-
'
1. Arranging the upper end of the rocking lever so that the catch or pawl may

page_text: be mounted or pivotted on either side of the rocking lever substantially as
described.
2. The combination of parts constituting the improved rocking lever constructed
and arranged as hereinbefore described and shewn in the Drawings.
In Witness whereof we the said John Hodgkinson and James Hodgkinson.
have hereunto set our hands and seals this twenty-third day of September
in the year of our Lord One thousand eight hundred and eighty two.
JOHN HODGKINSON.
(L.S.)
JAMES HODGKINSON. (L.S.)