Improvements in Jacquards and Dobbies.
Year: 1890

page_text: Date of Application, 26th July, 1890
Complete Specification Left, 25th Apr., 1891-Accepted, 30th May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Jacquards and Dobbies.
We, GEORGE HERBERT HODGSON, Loom Maker, and WALTER TETLEY,
Foreman, both of Bee Hive Works, Bradford, in the County of York, do hereby
declare the nature of this invention to be as follows:-
This invention relates to above machines, and consists of improvements in the
uprights of a jacquard machine, such improvements being equally applicable to the
draw hooks or catches of a dobby.
According to this our said invention in lieu of bending the upper ends of the
uprights so as to form hooks we mount on loose pins on the upper ends of
the upright hinged or jointed X pieces similar to a pair of scissors, outer upper
edges of which are each provided with a hook with which lifters engage.
The knives employed in connection with the uprights as described, are of V form
or section so that one knife is adapted to take up either the upright on its right, or
the one on its left, or it is equally available for lifting or lowering two adjoining
uprights the knife at the extreme ends will of course be single, having to operate
one leg of the scissors only.
The action is as follows:-The grate through which the uprights are passed
serves as a guide also as a stay or stop piece and rest against which, one side of the
upright is pressed, when a blank of the cylinder acts on a neelle, the effect is to
instantly close the scissors and the knife will consequently miss the hooks of the
upright and the "end" will remain down. If there be a hole in the cylinder the
needle not being acted upon the scissors will not be closed, until a knife engages
with a hook of the upright, but soon as there is any draw on the hook of the
upright the effect of the weight or pull of the harness instantly closes the other leg
of the scissors, and thereby clears that side and hook from engaging with the
adjoining knife. There is a bend formed of a part of the upright which acts as a
holder upon which the upright rests so long as holes occur in the cylinder and until
pushed off by a blank in the cylinder as ordinary. When an upright is descending
it is lowered by its knife and the weight of the harness being on the upright closes
the scissors and so clears the adjoining knife and when the uprights are up the
scissors are open so as to be in position for engaging with the knives, the latter as
an escapement action slightly raising the uprights in order to clear, the uprights of
the rest piece of the guide that the upright may be pushed off, soon as the cylinder
indicates a change. The needles need not necessarily enclose the uprights as if
there be a projection on the needles formed by a bend thereon that will suffice as a
pusher for operating the needle.
The uprights in all cases when being lifted are necessarily closed so that there is
no rubbing or friction against the needle.
The X or scissors arrangement of hooks is equally applicable to dobbies there
being the connections from one end of the scissors to the jack levers the other ends
of the scissors having hooks thereon, with which the draw knives engage accordingly
as the pattern pegs or tappet chain indicate. Preferable the connection between
the ends of the scissors and the jack levers is a wire connection similar to a jacquard
upright and there will be a bend or stop piece and rest for holding the hooks to
their position until a change is indicated.
Dated this 25th day of July 1890.
WALTER
BRIERLEY,
Central Chambers, Halifax, Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Jacquards and Dobbies.
We GEORGE HERBERT HODGSON, Loom Maker, and WALTER TETLEY,
Foreman, both of Bee Hive Works, Bradford in the County of York, 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 above machines and consists of improvements in the
uprights of a jacquard machine, such improvements being equally applicable to the
draw hooks or catches of a dobby.
According to this our said invention in lieu of bending the upper ends of the
uprights so as to form hooks we mount on loose pins on the upper ends of each
upright hinged or jointed X pieces somewhat similar to a pair of scissors, and the
outer and upper ends are each provided with a hook with which lifters or knives
engage.
The lifters or knives employed in connection with the uprights as described, are
of V form or section so that one knife is adapted to take up either the upright on
its right or the one on its left, or it is equally available for lifting or lowering two
adjoining uprights the knife at the extreme ends will of course be single, having to
operate one leg of the scissors only.
Such being the nature and object of our invention the following is a complete
description of same reference being had to the accompanying drawings in
which-
Fig. 1 is a sectional elevation of a part of a jacquard with our improvements
applied thereto, and shewing the knives or lifters in the "down" position.
Fig. 2 shews the knives or lifters raised and engaging with the hooks on the
× pieces.
The remaining fig. on Sheet 2 is a detail.
According to this our said invention in lieu of bending the upper ends of the
uprights so as to form hooks we form the said uprights 1. of U shape and mount
on loose pins 2. 2 on the upper free ends of each upright hinged or jointed
X pieces 3. 3 somewhat similar to a pair of scissors, and their outer and upper ends
are each provided with a hook 4. 4 with which lifters or knives 5 engage.
The lifters or knives 5 employed in connection with the uprights 1 as described,
are of V form or section so that one knife 5 is adapted to take up either the
upright 1 on its right, or the one on its left, or it is equally available, for lifting or
lowering two adjoining uprights 1. 1. The kuives 5 at the extreme ends will of
course be single as at 6, 6 having to operate one leg only of the scissors.
22
The action is as follows:-The grate 7 through which the uprights 1, 1, are
passed serves as a guide also as a stay or stop piece and rest against which, one
side 8 of the upright I is pressed, when a blank of the cylinder 9 acts on a needle 10
and the effect is to instantly close the scissors and the knife 6 (see Fig. 1) will
consequently miss the hooks 4 of the upright 1 and the "end 11 will remain down.
If there be a hole in the cylinder the needles 12 (see Fig. 1) not being acted upon,
the scissors will not be closed, until a knife 5 engages with a hook 4 of the
upright 1, but soon as there is any draw on the hook 4 of the upright 1 the effect of
the weight or pull of the harness on the "ends" 11 instantly closes the other leg
of the scissors (see Fig. 2) and thereby clears that side and hook from engaging
with the adjoining knife. There is a bend or catch 13 formed in the upright which
catching on the rod or grate 14 acts as a "holder up," the upright resting on the
grate 14 so long as holes occur in the cylinder 9 and until pushed off by a blank in
the cylinder 9 as ordinary. When an upright 1 is descending it is lowered by its
knife 5 and the weight of the harness being on the upright closes the scissors and so
clears the adjoining knife and when the weight is removed from the uprights

page_text: the U shaped piece of metal operates as a spring and the scissors are opened so as
to be in position for engaging with the knives, the latter having the ordinary
escapement action slightly raising the uprights 1. 1 in order to clear, the uprights
of the rest piece 14 that the upright may be pushed off, soon as the cylinder 9
indicates a change. The needles need not necessarily enclose the uprights 11 as
shewn by the detail on Sheet 2 as if there be a projection on the needles formed by
a bend thereon as ordinary that will suffice as a pusher for operating the
upright.
The uprights in all cases when being lifted are necessarily closed so that there is
no rubbing or friction against the needle.
It will be obvious that the X or scissors arrangement of hooks is equally
applicable to dobbies there being the connections from one end of the scissors to
the jack levers the other ends of the scissors having hooks thereon, with which the
draw knives engage according as the pattern pegs or tappet chains indicate.
Preferably the connection between the ends of the scissors and the jack levers is a
wire similar to a jacquard upright as heretofore constructed and there will be
a bend or stop piece and rest for holding the hooks to their position until a change
is indicated.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The uprights such as 1. 1 cross pieces such as 3. 3 their outer ends terminating
in the hooks 4, 4 and the V knives 5 all in combination, as herein described, and
substantially as illustrated by the annexed drawings and for the purposes set
forth.
Datadi:
لية
1
1 1001
xp
103
GEORGE HERBERT HODGSON.
WALTER TETLEY.
By their Agent, Walter Brierley,
Central Chambers, Halifax.
GEORGE HERBERT HODGSON.
WALTER TETLEY.
By their Agent, Walter Brierley,
Central Chambers, Halifax.