Improvements in or connected with Dobbles of Looms for Weaving.
Year: 1893

page_text: Date of Application, 15th Nov., 1893
Complete Specification Left, 14th Aug., 1894-Accepted, 15th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with Dobbles of Looms for Weaving.
I THOMAS JAMES CROSSLEY of Middleton Junction near Oldham in the
County of Lancaster, Jacquard Machine Maker, do hereby declare the nature of
this invention to be as follows:-
This invention relates to the joints or connections between the draw hooks of
the dobby and the vertical rocking lever by which they are attached to the jack
lever and also to the connection between the latter and the said vertical rocking
lever.
I bore three joint holes in the last named lever of such a diameter, say about
seven-eighths of an inch, as to fit corresponding bosses or paps on the draw hooks
and jack lever, the said bosses or paps being by preference cast hollow or tubular.
I also form the said vertical lever at each joint with a recess or reduction in
thickness to receive the end of the jack lever and draw hooks and also with a
projection extending in the direction of the said lever and hooks and provided
with a slot open at the upper end and curved in an arc struck from the centre of
its respective joint hole.
I also cast or fix on the jack lever and on each draw hook a stud or button
which can slide in the open slot in the vertical rocking lever above named, and
which is made with a head so that when the pap or boss on the draw hook or jack
lever has been engaged in its joint hole and the stud or button guided into the
corresponding curved open slot, the draw hook or jack lever is firmly connected to
the rocking lever; and the pap or boss thereof, although freely moving in the joint
hole, cannot become accidentally disengaged therefrom.
The projecting parts of the rocking lever are by preference reduced in thickness
around the curved slots so that the heads of the studs or buttons do not project
therefrom.
If desired the curved slot can be formed in the draw hooks or jack lever, and
the stud or button fixed to the rocking lever.
Dated this 14th day of November 1893.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Dobbies of Looms for Weaving.
I THOMAS JAMES CROSSLEY of Middleton Junction, near Oldham in the
County of Lancaster, Jacquard Machine Maker, 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 joints or connections between the draw hooks of
the dobby and the vertical rocking lever or "baulk" by which they are attached
to the jack lever, and also to the connection between the latter and the said
"baulk" or vertical rocking lever.
In order that my invention may be clearly understood I have annexed hereunto
a sheet of drawings illustrative thereof, and have marked the same with figures
and letters of reference corresponding with those in the following description.

page_text: Fig. 1 is an elevation showing a jack lever a, with vertical lever or "baulk " b
attached thereto, and two draw hooks c and c¹ attached to the said vertical lever
"baulk" according to my invention as hereafter described.
or
Fig. 2 is a plan of the levers a and b showing the lever or "baulk" in section
at about the line A, A, on Fig. 1.
Fig. 3 is an elevation of the hook c detached.
Fig. 4 is a plan of the hook c and lever or "baulk" the latter being shewn
in section taken at about the line B, B, on Fig. 1.
I bore three joint holes marked 1, 2, 3 in the lever or "baulk" of such a
diameter, say about seven eighths of an inch, as to fit corresponding bosses or
paps, c+, c++, and a+ on the draw hooks c, c, and jack lever a respectively, the
said bosses or paps being by preference cast hollow or tubular as shown.
I also form the said vertical lever or "baulk" b at each joint with a recess or
reduction in thickness (see Figs. 2 and 4) to receive the end of the jack lever a
and draw hooks c, c', and also with a projection (as shown at 61, 62, 63 Fig. 1)
extending in the direction of the said lever and hooks and provided with a slot
open at the upper end and curved in an arc struck from the centre of its respective
joint hole 1, 2 or 3.
°
I also cast or fix on the jack lever a and on each draw hook c and c¹ a stud or
button, marked a³, c³ and c³ respectively, which can slide in the open slot in the
vertical rocking lever or "baulk "b above named, and which is made with a head,
as shown, so that when the pap or boss on the draw hook or jack lever has been
engaged in its joint hole and the stud or button guided into the corresponding
curved open slot, the draw hook or jack lever is firmly connected to the rocking
lever or
"
*baulk
; and the pap or boss thereof, although freely moving in the
joint hole, cannot become accidentally disengaged therefrom.
The projecting parts of the rocking lever or "baulk" are by preference reduced
in thickness around the curved slots, as shewn in the drawings, so that the heads
of the studs or buttons do not project therefrom.
It will be evident without illustration that the curved slot can if desired be
formed in the draw hooks or jack lever and the stud or button fixed to the rocking
lever or "baulk."
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
The improved means for connecting the draw hooks, the vertical lever or
"baulk," and the jack lever, in dobbies of looms for weaving, substantially as
hereinbefore described and illustrated by the annexed drawings.
Dated this 13th day of Anost 1894
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.