Improvements in Dobbies and Change-box Motions of Looms for Weaving.
Year: 1899

page_text: Date of Application, 14th Dec., 1899
¡Complete Specification Left, 14th Sept., 1900-Accepted, 24th Nov., 1900
PROVISIONAL SPECIFICATION.
Improvements in Dobbies and Change-box Motions of Looms for
Weaving.
We, RICHARD LONGDEN HATTERSLEY, of North Brook Works, Keighley, in the
County of York, Machine Maker, and SIMEON JACKSON, of the same address,
Manager, do hereby declare the nature of this invention to be as follows:-
The first part of our invention refers to shut or centre shed dobbies. With
this class of dobby the healds are raised or lowered according to the indication
imparted to the dobby and are then brought to their central position at each
operation. By our improvement we obtain this movement with fewer working
parts and less friction than hitherto, also the healds are positively operated.
Our improvement is as follows:-
-
The draw lever to which the heald is connected is designed with a slot to receive
a shaft on which it fulcrums and in such a manner that it can be operated upon
by either of two knives. The two knives work horizontally in the same plane as
the fixed fulcrum, for the draw lever, one is for the raising of the heald and the
other for the lowering of same and both work back to their starting positions at
each operation. The draw lever of which as is well understood there is a series,
can be brought into contact with either knife as indicated from the indicating
cards.
The point, or points, of connection of the heald to the draw lever and the
fulcrum of the latter are in such relative positions that during one part of the
operation the weight of the heald holds the draw lever in contact with one or
other of the knives, that is, the one by which it is being operated, and during
the other part the draw levers, operated by the knife for lowering the healds, are
forced on to the other knife. We also make use of a stationary bar under which
the draw levers pass when in contact with the knife for lowering the healds.
The second part of our invention refers to improvements in change box motions
of looms for weaving.
In these motions the indications are usually transmitted from a set of indicating
cards to the box operating mechanism by a set, consisting of two or more, of
levers. The set of cards passes over a cylinder, which is rotated by a catch con-
nected to one of the before mentioned levers.
In this, our improvement, we mount an additional lever and the set of cards
is prepared to indicate on same, also, we mount loosely on the cylinder shaft,
working together a catch wheel and tappit, the former is operated as required from
the set of cards by means of the additional lever and the latter brought into
contact with the set of levers and catch. By the aid of this arrangement any one,
or more, of the cards, of which the set is composed, may be made to serve for two
or more cards, the catch wheel and tappit being designed and the connection

page_text: arranged in such a manner that the set of levers and catch are out of contact with
the cylinder for the time required.
Dated this 13th day of December 1899.
RICH. L. HATTERSLEY
SIMEON JACKSON,
Applicants.
COMPLETE SPECIFICATION.
Improvements in Dobbies and Change Box Motions of Looms for
Weaving.
We, ALFRED SMITH, of Woodworth, Ingrow, near Keighley, HERBERT HAGGAS,
of Bracken Bank, Keighley, ROBERT NEWSHOLME, of Belgrave Mount, Keighley,
and SAMUEL CLOUGH, of Steeton, near Keighley, Esquires, Executors of Richard
Longden Hattersley, late of North Brook Works, Keighley, in the County of York,
Machine Maker, and SIMEON JACKSON, of the same address, Manager, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
-
The first part of our invention refers to shut or centre shed dobbies. With
this class of dobby the healds are raised or lowered according to the indication
imparted to the dobby, and are then brought to their central position at each
operation. By our improvement we obtain this movement with fewer working
parts and less friction than hitherto, also the healds are positively operated.
Our improvement is as follows:-
The draw-lever to which the heald is connected is designed with a slot to receive
a shaft on which it fulcrums and in such a manner that it can be operated upon
by either of two knives. The two knives work horizontally in the same plane as
the fixed fulcrum for the draw lever, one is for the raising of the heald and the
other for the lowering of same and both work back to their starting positions at
each operation.
The draw lever, of which as is well understood, there is a series, can be brought
into contact with either knife as indicated from the indicating cards.
The point, or points, of connection of the heald to the draw lever and the
fulcrum of the latter are in such relative positions that during one part of the
operation the weight of the heald holds the draw lever in contact with one or
other of the knives, that is, the one by which it is being operated, and during
the other part the draw levers operated by the knife for lowering the healds, are
forced on to the other knife. We also make use of a stationary bar under which
the draw levers pass when in contact with the knife for lowering the healds.
The second part of our invention refers to improvements in changebox motions
of looms for weaving.
In these motions the indications are usually transmitted from a set of indicating
cards to the box operating mechanism by a set, consisting of two or more, levers.
The set of cards passes over a cylinder, which is rotated by a catch connected
to one of the before mentioned levers.
In this, our improvement, we mount an additional lever, also we mount loosely
on the cylinder shaft, working together, a catch wheel and tappit, the former is
operated by means of the additional lever and the latter brought into contact with

page_text: the set of levers and catch. By the aid of this arrangement any one, or more, of
the cards of which the set is composed, may be made to serve for two or more
cards, the catch wheel and tappit being designed and the connections arranged in
such a manner that the set of levers and catch are out of contact with the cylinder
for the time required.
In order to make clear our invention we append hereto a sheet of drawings
marked with figures of reference in which like figures denote like parts.
Fig. 1 is an end view of loom with our improvements attached and Fig. 2 a
front view of same.
The dobby is operated by means of lever 1 and rod 2 from any motor part of
the loom and the card cylinder 3 is in like manner raised and lowered on each
operation of the loom.
The two draw knives 4 & 5 are operated by the levers 1 & 1ª being connected
with same by the rods 6, 6ª 7 & 7"; the knife 4 is for the lowering of the heald
and the knife 5 for the raising of same. These knives operate the draw lever 8
to which the heald is connected at the points 9 & 10 the one at the point 10 from
the top side of heald and the one at the point 9 from the bottom side of heald.
The card cylinder 3 is raised and lowered on each operation of the loom by
the rod 11 and is turned one-eighth of a revolution by the catch 12. In this manner
the indications are imparted to the draw lever 8, of which there is a series, from
a chain of cards 13 passing over the cylinder 3 by means of the needle 14. Thus
if a blank be presented to the needle 14 the draw lever 8 is raised and put into
contact with the knife 4 and thereby the heald is lowered; if a perforation be
presented to the needle 14, the lever 8 is lowered into contact with the knife 5
and the heald is thereby raised.
The draw lever 8, which is provided with the slot 8", fulcrums on the fixed
stud 16 and the heald connections 9 & 10 are so arranged that when the draw
lever 8 is being operated, either backwards or forwards, by the knife 4 the weight
of the heald holds the draw lever S and knife 4 in contact for a part of its traverse
and during another part it is held in contact by the stationary bar 17, also
that the weight of the heald places it in contact with the knife 5 and clear
of the knife 4 when the latter is approaching the completion of its stroke. Also
when the draw lever 8 is being operated, either backwards or forwards, by the
knife 5 both are held in contact by the weight of the heald.
From the foregoing it will be seen that the healds are positively operated and
brought to their central position at each operation with fewer working parts
than hitherto.
In the second part of our invention we make use of the well-known box
cylinder 18, indicating levers 19 & 20. We mount loosely on the cylinder shaft 21
a tappet 22 and catch wheel 23 working in connection, the catch wheel 23 is
operated by the catch 24 which is connected to the additional lever 25. The
tappet 22 is brought into contact with the levers 19 & 20 by the spring 26, lever 27
and its arm 27, and pins 28 & 29. Thus when it is required that one card of the
chain 31 acts for two operations, as shown in Figs. 1 & 2, the tappet 22 renders
inoperative the indicating levers 19 & 20 and the cylinder catch 30 attached to
the lever 19, each successive operation in the following manner. The tappet 22
and spring 26 operate the lever 27 so that during one operation, the lever 27
is at its forward position when the pins 28 & 29, which project from the levers 19
& 20 rest on the arm 27 and the ordinary pins 32 & 33 are held clear of the
cylinder 18 and thus the levers 19 & 20 are not operated by same. During the
other operation the lever 27 is at its back position when the arm 27ª is clear of the
pins 28 & 29 and the levers 19 & 20 are free to be operated in the ordinary manner
by the cylinder 18 through the pins 32 & 33. The lever 25 with its catch 24
receives its motion in any ordinary manner, is loosely mounted on the stud 34 and
transmits the movement to the catch wheel 23 on every operation.
In like manner the tappet 22 can be designed so that one card serves for 4,
or 8 movements.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:
1st. The combination of a shut or centre shed dobby, as shown and specified.
2nd. The application of the additional parts to a change box motion so that one
card can be repeated 2, 4, 6 or 8 times as required.
Dated this 13th day of September 1900.
ALFRED SMITH,
HERBERT HAGGAS,
ROBT. NEWSHOLME,
SAML. CLOUGH,
SIMEON JACKSON,
Applicants.
ALFRED SMITH,
HERBERT HAGGAS,
ROBT. NEWSHOLME,
SAML. CLOUGH,
SIMEON JACKSON,
Applicants.