IMPROVEMENTS IN DOBBY APPARATUS EMPLOYED IN LOOMS FOR WEAVING ass
Year: 1884

page_text: I, JOHN AINSWORTH of Preston in the County of Lancaster, Weaving Manager,
do hereby declare the nature of said Invention for "IMPROVEMENTS IN DOBBY
APPARATUS EMPLOYED IN LOOMS FOR WEAVING to be as follows:-
:-
ور
This invention relates to means for putting the lattice barrel or cylinder of
dobby apparatus in and out of action at the required times and is more particularly
applicable for weaving cross-borders or headings in handkerchiefs, scarves and
similar articles.
I employ an ordinary pegged lattice actuated in the usual manner for putting
in the pattern of the cross-border or heading and provide near one edge of the
lattice a special peg or projection which upon passing under the extremity of a
tongue or arm lifts it up and with it the hook or catch which pulls over the
lattice barrel thereby lifting the hook or catch out of contact with its catch wheel.
The tongue or arm projects from the inner end of a horizontal bar attached
at its outer end to a vertical pivotted rod or pendulum. Projecting from the
pendulum is a finger which rests against one side or face of a slowly revolving
disc provided with nibs or inclined projections which as they in turn come round
press against the finger and cause the pendulum rod to be pulled sideways and
with it the tongue or arm connected to the lattice barrel hook until the latter is
drawn from over the peg or projection upon the lattice whereupon the tongue or
arm will be free to fall and return to its normal position and thus allow the hook
to engage with the catch wheel and rotate the lattice barrel until such time as the
peg or projection again comes round and lifts the hook out of action as before.
The revolving disc is rotated by means of a worm wheel arrangement actuated by
a catch wheel and pawl to which the requisite to and fro movement is imparted
from a vertical rod connected to the tappet shaft; and answers according to the
speed at which it rotates and the distances apart of the nibs or inclined projections.
on its face as a positive "measuring motion" for determining the exact intervals
between the cross-borders or headings. The speed of rotation of the dise may be
varied by change wheels as will be well understood.
The arrangement of revolving disc and attendant mechanism as above described
may be readily adapted to operate in conjunction with the lattice employed for
putting in and out of gear the tappet clutches in ordinary plain looms..
Dated this 23rd day of January 1884

page_text: "
I, JOHN AINSWORTH, of Preston, in the County of Lancaster, Weaving Manager,
do hereby declare the nature of my invention for "IMPROVEMENTS IN DOBBY
APPARATUS EMPLOYED IN LOOMS FOR WEAVING 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 means for putting the lattice barrel or cylinder of
dobby apparatus in and out of action at the required times and is more par-
ticularly applicable for weaving cross-borders or headings in handkerchiefs,
scarves, and similar articles.
In the accompanying Drawings Fig 1 is a side view and Fig 2 an end' view
shewing so much of a loom dobby as is necessary for the purpose of illustrating the
application of my invention.
I employ an ordinary pegged lattice 1 (actuated in the usual manner) for
putting in the pattern of the cross-border or heading and provide near one edge
of the lattice a special peg or projection 2 which upon passing under the extremity
of a tongue or arm 3 lifts it up and with it (by means of the chain 4) the hook or
catch 5 which pulls over the lattice barrel 6; the hook or catch 5 being thereby
lifted out of contact with its catch wheel 7. The tongue or arm 3 projects from
the inner end of a horizontal bar 8 attached at its outer end to a vertical rod
or inverted pendulum 9 pivotted at 20 on the extremity of an arm or bracket 21.
Projecting from the pendulum 9 is a finger 10 which rests against one side or
face of a slowly revolving disc 11 provided with nibs or inclined projections 12, 12
which, as they in turn come round, press against the finger 10 and push it
outwardly thereby causing the pendulum rod 9 to be pulled sidewise (as shewn in
dotted lines in Fig 2) and with it the tongue or arm 3 until the latter is drawn
from over the peg or projection 2 whereupon the tongue or arm 3 will be free to
fall and thus allow the hook 5 to descend and engage with the catch wheel 7 and
rotate the lattice barrel 6 until such time as the peg or projection 2 again comes
round and lifts the hook 5 out of action as before. The spiral spring 17 serves to
pull the pendulum rod 9 and the tongue or arm 3 (when the inclined nib or
projection 12 has passed the finger 10) back into place so that the tongue or arm 3
may be in position for being lifted when the peg 2 again comes round. The
revolving disc 11 is rotated by means of a worm wheel 13 (actuated by a catch
wheel 14 and pawl 15 carried on the vibrating arm 19 to which the requisite
vertical to and fro movement is imparted from an arm 16 projecting from the
tappet rod 18); and answers, according to the speed at which it rotates and the
distance apart of the nibs or inclined projections 12, 12 on its face, as a positive
"measuring motion" for determining the exact intervals between the cross-borders
or headings.
The speed of rotation of the disc 11 may be varied by change wheels as
will be well understood or by changing the catch wheel 14 for one having a
greater or less number of teeth as may be required.
The arrangement of revolving disc and attendant mechanism as above described
may be readily adapted to operate in conjunction with the lattice employed for
putting in and out of gear the tappet clutches in ordinary plain looms.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
The use or employment of apparatus constructed, arranged, and operating
substantially as described and shewn in the drawings for the purpose specified.
Dated this 20th day of September 1884
W. LLOYD WISE,
Per F. J. Brougham,
Applicant's Agent.
W. LLOYD WISE,
Per F. J. Brougham,
Applicant's Agent.