Improvements in Change Box and Picking Motions of Looms for Weaving.
Year: 1897

page_text: Date of Application, 27th Nov., 1897
Complete Specification Left, 27th Aug., 1898-Accepted, 27th Nov.,
1898
PROVISIONAL SPECIFICATION.
Improvements in Change Box and Picking Motions of Looms
for Weaving.
I, GEORGE HERBERT HODGSON, trading as George Hodgson, Thornton Road,
Bradford, in the County of York, Machine Maker, do hereby declare the nature
of this invention to be as follows:-
This invention relates to improvements in the construction of circular box looms
for weaving, and consists of improvements in the construction, arrangement, and com-
bination of mechanism for controlling the knives for operating the box levers,
such knives being actuated positively from tumbler levers, controlled by pattern
chain or barrel carried on the same shaft as the ordinary pattern barrel of the
dobby for controlling the shedding motion. The invention also consists of
improvements in the method of and means employed for controlling the picking
tappets, and moving same in or out of gear by hand when desired. The picking
tappets are controlled by the same barrel and pattern mechanism that controls
the circular shuttle boxes. The arrangement hereinafter described simplifies
the construction of the loom, the latter being more compact and also positive in
its action.
According to this invention I employ a pattern barrel and cards mounted on
the barrel shaft of the dobby. The cards control tumbler levers to which are
attached pendant rods the lower ends of which are connected with a spring escape-
ment to bell crank levers mounted on fulcrum studs fixed to the frame of the loom.
The opposite ends of the bell crank levers have cast on them two studs or pro-
jections which clip the operating knives or hooks connected to the box levers and
such pins or projections ensure the said knives being moved in or out of line with
the snecks of the broken backed lifting lever as required and as indicated by the
pattern mechanism. The knives or hooks at the opposite end of the loom are con-
nected to the tumbler levers of links and levers.
For controlling the picking tappets I employ a tumbler lever controlled by the
cards above described and to such lever is attached a pendant rod the lower end of
which is connected to a bell crank lever mounted in the end frame of the loom.
On the opposite end of this bell crank lever are two pins or projections and a cam
surface and the pins loosely clip the knives or hooks connected to the scroll lever
for operating the tappets, such knives or hooks having their engaging catches or
snecks in reverse directions. The pins or projections ensure the knives or hooks
being moved as indicated and the cam surface coming into contact with one or
other side of a pin on the broken backed lever is thereby held and locked in position
for the time being. The scroll lever is connected to the scroll as ordinary and to
the latter is a lever connected to a rocking lever mounted in a standard. To the
opposite end of the rocking lever is a stud passing through curved slots in the ends
of the divided tappet connecting rod. By moving the rocking lever through the
agency of the scroll and as indicated by the pattern mechanism the tappets are
moved in and out of gear. Links connected to each part of the tappet rod are

page_text: themselves connected to a lever which by crank rod and handle can be controlled
from the front of the loom by the handle or a treadle. By turning the handle or
treadle both the tappets can be moved out of gear and the stud in the rocking
lever will move in the curved slot without operating the tappets.
Dated this 26th day of November 1897.
BRIERLEY & HOWARD,
enny Bank Chambers, Halifax, Agents for the Applicant.
Improvements in Change Box and Picking Motions of Looms
for Weaving.
I, GEORGE HERBERT HODGSON, trading as George Hodgson, Thornton Road,
Bradford, in the County of York, Machine Maker, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:—
This invention relates to improvements in the construction of circular box looms
for weaving, and consists of improvements in the construction, arrangement, and com-
bination of mechanisan for controlling the knives for operating the box levers,
such knives being actuated positively from tumbler levers, controlled by pattern
chain or barrel carried on the same shaft as the ordinary pattern barrel of the
dobby for controlling the shedding motion. The invention also consists of
improvements in the method of and means employed for controlling the picking
tappets, and moving same in or out of gear by hand when desired. The picking
tappets are controlled by the same barrel and pattern mechanism that controls
the circular shuttle boxes. The arrangement hereinafter described simplifies
the construction of the loom, the latter being more compact and also positive in
its action.
Such being the nature and object of my said invention, the following is a com-
plete description of same, reference being had to the annexed drawings, in which:
Fig. 1 is an end elevation of part of a loom shewing the improved apparatus for
controlling the knives for operating the box levers.
Fig. 1 is a detail of the bell crank lever and cam surface.
Fig. 2 is a back elevation of the improved mechanism for controlling the pick-
ing tappets.
Fig. 3 is a plan view of Fig. 2.
Fig. 4 is a plan view of the scroll drawn on a reduced scale, and with the rod 24
attached.
According to this invention I employ a pattern barrel 1 and cards mounted on
the barrel shaft 2 of the dobby. The cards 1 control tumbler levers 3, 3 to one et
more of which are attached pendant rods 4, the lower end of one of which is con-
necfed by a spring escapement 5 to a bell crank lever 6 mounted on a fulcrum stud 7
fixed to the frame 8 of the loom. The opposite end of the bell crank lever 6 has cast
on it two studs or projections 9-9 which clip the operating knife or hook 10 con-
nected to the box lever 11, and such pins or projections 9-9 ensures the said
knife 10 being moved in or out of line with the sneck 12 of the ordinary broken
backed lifting lever 13 as required and as indicated by the pattern mechanism.
There will be one pendant rod 4 for each operating knife and the knives or hooks
at the opposite end of the loom are connected to the tumbler levers by means of
links and levers.
For controlling the picking tappets I employ a tumbler lever 3 controlled by the
cards 1 above described, and to such lever 3 is attached a pendent rod 14 the lower

page_text: end of which is connected to a bell crank lever 15 mounted in the end frame S
of the loom. On the opposite end of this bell crank lever 15 are two pins or pro-
jections 16, 16 and a cam surface 17 (see Fig. 1) and the pins 16, 16 loosely clip
the knives or hooks 18, 19 connected to the ordinary scroll lever 19 for operating
the tappets, such knives or hooks 18, 19 having their engaging catches or snecks 21,
21 in reverse directions. The pins or projections 16 ensure the knives or
hooks 18, 19 being moved as indicated, and the cam surface 17 coming into con-
tact with one or other side of a nin 22 on the broken backed lever 13 is thereby
held and locked in position for the time being. The scroll lever 19" and the
scroll 20 are constructed as ordinary and well known in connection with this class
of loom and attached to the scroll 20 is a lever 24 (see Figs 2 and 4) connected to
a rocking lever 25 mounted in a standard 26. When one or other of the knives 18,
19 is pulled, the lever 19 is rocked and a partial turn given the wheel 35 and
pinion 36 of the scroll 20° and eccentrically attached to the pinion 36 is the lever 24
which is thereby moved longitudinally. To the opposite end of the rocking lever 25
is a stud 27 passing through curved slots 28, 28 in the ends of the divided tappet
connecting rod 29. By moving the rocking lever 25 through the agency of the
scroll 20 and knives or hooks 18, 19 aud as indicated by the pattern mechanism,
the tappets are moved laterally in and out of gear. Links 30 connected to each
part of the tappet rod 29 are themselves connected to a lever 31 which by crank 32
and rod 33 and handle 34 can be controlled from the front of the loom by the
handle or a treadle. By turning the handle or treadle 34 both the tappets can
be moved out of gear and the stud 27 in the rocking lever 25 will move in the
curved slots 28 without operating the tappets.
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 general construction, arrangement and combination of parts constitut-
ing the improved mechanism for controlling the knives for operating the box levers
of looms for weaving as herein described and substantially as illustrated by Fig. 1
of the annexed drawings.
(2) The tumbler 3, pendant rod 4, bell crank lever 6 stud or projections 9
and knife or hook 10, all in combination as and for the purpose herein described
and substantially as illustrated by Fig. 1 of the annexed drawings.
(3) The tumbler lever 3 pendant rod 14 bell crank lever 15 pins or projections 16
and cam surface 17 all in combination as and for the purpose herein described and
substantially as illustrated by Fig. 1 of the annexed drawings.
(4) The general construction, arrangement, and combination of parts constitut-
ing the improved mechanism for controlling the picking tappets as herein described
and substantially as illustrated by Figs. 2 and 3 of the annexed drawings.
(5) The rocking lever 25 stud 27 divided tappet connecting rod 29 with curved
slots 28-28 all in combination as and for the purpose herein described and sub-
stantially as illustrated by Figs. 2 and 3 of the annexed drawings.
Dated this 26th day of sugust 1908