Improvements in Dobbies or Mechanism for Operating the Healds of Looms for Weaving.
Year: 1887

page_text: Date of Application, 19th Feb., 1887
Complete Left, 19th Nov., 1887
Complete Accepted, 27th Jan., 1888
Improvements in Dobbies or Mechanism for Operating the Healds
of Looms for Weaving.
I, CHRISTOPHER CATLOW of 22, Clifton Street, Burnley, in the County of
Lancaster, Overlooker do hereby declare the nature of this invention to be as
follows:
This invention relates to improvements in the horizontal draw hooks operated from
a vertical rocking lever, and in the lifters, or appliances for lifting or operating such
hooks in lieu of the needles heretofore employed and to improvements in the tumbler
levers employed for operating the improved lifters and draw hooks.
According to this my invention cast to, and forming part of the underside of each
draw hook is a hollow, or recessed angled bearing piece or projection which in case
of the botton book rests upon the lifting end of the tumbler lever, the latter thus
operates the bottom draw hook direct without any intervening needle or other
connection.
For operating the upper hook I employ in lieu of the ordinary needle a flat bar
preferably grooved longitudinally and having a projecting shoulder piece or lug on
one of its sides on which lug the horizontal bearing piece or projection on the upper
hook rests, and by which the upper book is lifted through the agency of the peg and
tumbler levers.
Or extending from the tumbler lever is a cranked or curved finger which extends
to and operates the upper catch, either directly or by reason of acting on a finger
extending from the under side of the catch, or the curved finger may be loose so as
to operate the top or bottom hook by the cranked finger of the tumbler lever as
referred to, but in either case there is not any needle or other intervening connection
used or required.
In cases where the improved lifters are to be employed for lifting both top and
bottom hooks as in general construction of dobbies I crank alternate lifts at a distance
from their lower end, and also form a swell at the outside of the cranked part, so that
the swell is on one lifter and the lug on upper part of next lifter, thus ensuring
ID037

page_text: the equal spacing or distance between each pair of lifters when the latter are placed
together.
!
In the underside of the heavy end of the tumbler lever 1 form a semi-circular or
A groove so that if the lifting peg should not be exactly central with the tumbler
lever which it has to lift, the peg will be received on the side of the recess, and
thereby be diverted and turned to a correct position, or it will slightly move the end
of the tumbler lever laterally or otherwise by reason of the said groove or recess
be prevented slipping off the side or edge of the lever it should lift and wedging
between and lifting two levers as is common when under edges of the levers as now
made become worn.
11
حيمد
Joh 1007
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicant.

page_text: Improvements in Dobbies or Mechanism for Operating the Healds
of Looms for Weaving.
I CHRISTOPHER CATLOW of 22 Clifton Street, Burnley, in the County of Lancaster,
Overlooker, 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 horizontal draw hooks operated from
a vertical rocking lever, and in the lifters or appliances for lifting or operating such
hooks in lieu of the needles heretofore employed, and to improvements in the tumbler
levers employed for operating the improved lifters and draw hooks.
According to this my invention cast to and forming part of the underside of each
draw hook, which is jointed to the vertical lever by the stud, is a hollow or recessed
angled bearing piece or projection which in case of the bottom hook rests upon the
lifting end of the tumbler lever, the latter thus operates the bottom draw hook direct
without any intervening needle or other connection, the joint end of the draw hooks
may be cranked.
For operating the upper hook I employ in lieu of the ordinary needle a flat bar
preferably grooved longitudinally and having a projecting shoulder piece or lug on
one of its sides, on which lug the horizontal bearing piece or projection on the upper
hook rests, and by which the upper hook is lifted, through the agency of the peg and
tumbler levers.
In the underside of the heavy end of the tumbler levers I form a semi-circular or
A groove so that if the lifting peg should not be exactly central with the tumbler
lever which it has to lift, the peg will be received on the side of the recess and
thereby be diverted and turned to a correct position or it will be slightly move the
end of the tumbler lever laterally or otherwise by reason of the said groove or recess,
be prevented slipping off the side or edge of the lever it should lift and wedging
between the lifting two levers, as is common when under edges of the lever as now
made, become worn.
Such being the nature and object of this my said invention, the following is a
complete description of same, reference being had to the accompanying drawings.
Fig. 1 is a side elevation of my improved mechanism for operating the healds.
The several figures on sheet 2 illustrate parts of the dobby drawn full size.
According to this my invention, cast to, and forming part of the underside of
each draw hook 1 which is jointed to the vertical lever 1* by the stud 1' is a hollow
or recessed angled bearing piece or projection 2 which in case of the bottom hook
rests upon the lifting end 3 of the tumbler lever 4 the latter thus operates the bottom
draw hook 1 direct without any intervening needle or other connection. The joint
end of the draw hook 1 may be cranked as shewn at 1°.
The stud end of the draw hooks may be cranked as shewn at 1° sheet 2. so as to

page_text: bring the draw hook and vertical lever 1* lineable or on one and the same plane.
The projecting end 14 of the draw hooks 1. 1. enter the slots 15 and thereby form a
lock fast until the hook is lifted (for removal) into nearly a vertical position in
relation to the lever 1ª whereon the hooks 1. or 1 can be detached from 1" or the cranked
shoulder 17. is used in combination with the curved part 16 Fig. 2. which supports the
draw bar 1 in position when the pin 1b becomes worn.
For operating the upper hook 1 I employ in lieu of the ordinary needle a flat
bar 5 preferably grooved longitudinally as at 6 and having a projecting shoulder
piece or lug 7 on one of its sides, on which lug 7, the horizontal bearing piece or
projection 8 on the upper hook 1 rests, and by which the upper hook 1 is lifted,
through the agency of the peg 9 and tumbler levers 10. 13.
In the underside of the heavy end 11 of the tumbler levers 4. 10 I form a semi-
circular or groove 12 so that if the lifting peg 9 should not be exactly central with
the tumbler lever which it has to lift, the peg 9 will be received on the sloping side of
the recess, and thereby be diverted and guided to a correct position, or it will slightly
move the end of the tumbler lever laterally or otherwise by reason of the said groove
or recess 12 be prevented slipping off the side or edge of the lever it should lift,
and wedging between and lifting two levers, as is common when under edges of the
levers as now made become worn.
The needle 5 rests upon the broad portion 13 of the tumbler lever 10 and
consequently cannot slip from its lifting lever, the needle 5 being held in vertical
position by the grates 14ª 14*.
For holding the jack levers 15 in position and allowing them to work steadily,
I construct on each side of the loom à frame 16, connected at the ends by a rod or
bar 17 which passing under the levers 15 allows the same to rest thereon, whilst the
said frame 16 prevents the levers 15 from moving sideways.
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
1. The draw hook 1ª and tumbler lever 4 in combination, when constructed in
manner herein described and as illustrated by drawings annexed.
2. The draw hook 1, lifters 5, and levers 10 in combination when constructed in
manner herein described and illustrated in annexed drawings.
6. The levers 10. 4. lifters 5, draw hooks 1. 1°, all in combination and constructed
as described, and illustrated by annexed drawings.
4. The draw hooks 1 having the projecting locking part 14 the slot 15 in the
vertical lever 1*,. or the cranked shoulder 16 of the draw hook 1 with the curved
locking piece 17 of the vertical lever 1" in combination with the rest of the apparatus
as illustrated and herein set forth.
Dated this 18th day of November 1887.
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicant.