Improvements in Dobby Mechanism of Looms for Weaving.
Year: 1899

page_text: Date of Application, 11th Jan., 1899
Complete Specification Left, 11th Oct., 1899-Accepted, 11th Nov.,
1899
PROVISIONAL SPECIFICATION.
Improvements in Dobby Mechanism 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:-
This invention consists of an improved arrangement of levers applicable to
the class of dobby claimed in our Specification No. 25,237 of 1894.
As stated in the before-mentioned specification this dobby is arranged so that
the indication is imparted from two separate cylinders which are under the
control of a third cylinder. Over each of these two cylinders passes a set of
indicating lags, representing different designs to be made in the weave and as one
or the other can be repeated or put out of operation when and as required a great
reduction is made in the number of lags necessary for the design.
In this our present arrangement we make use of two levers which as hereafter
explained work in unison and transmit the movement from the indicating lags
on their two respective cylinders to the ordinary catches of the dobby.
The first of these two levers is mounted on a movable fulcrum having two
positions, when in one position it imparts the motion in the ordinary manner
from its cylinder to the catches of the dobby, when in the other position it is
raised clear of its cylinder and transmits the motion received through the second
lever from the other cylinder to the said catches of the dobby. The second lever
is mounted on a fixed fulcrum and designed so that when in operation one of its
arms is in contact with the first lever, it has also a projection and this is connected
by a rod with the lever which determines the position of the first lever in such a
manner that when the first lever is in operation the second lever is raised clear
of its cylinder and when the first lever is raised clear of its cylinder the second
lever is in operation. It is understood that there is a series of each of the first
and second levers.
The positions of the two levers may be regulated by hand or they, the levers,
may be connected to, and regulated automatically by, the third cylinder shown in
Specification No. 25,237 of 1894.
Dated this 10th day of January 1899.
RICHD. L. HATTERSLEY,
SIMEON JACKSON,
Ad
licants.
PP
COMPLETE SPECIFICATION.
Improvements in Dobby Mechanism 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 and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
This improvement consists of an improved arrangement of levers applicable to
the class of dobby claimed in our Specification of Letters Patent Number 25237
of 1894.
As stated in the before-mentioned specification this dobby is arranged so that

page_text: the indication is imparted from two separate cylinders which are under the
control of a third cylinder. Over each of these two cylinders passes a set of
indicating lags, representing different designs to be made in the weave and as one
or the other can be repeated or put out of operation when and as required a great
reduction is made in the number of lags necessary for the design.
In this our present arrangement we make use of two levers which as hereafter
explained work in unison and transmit the movement from the indicating lags
on their two respective cylinders to the ordinary catches of the dobby.
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.
Figures I and II are elevations of our improvement showing the two positions of
the two levers and Figure III is a plan view of Figure I.
The indications 1 & 2 to be imparted to the catches 18 & 19 of the dobby pass
over the cylinders 4 & 5 and operate their respective series of levers 6 & 7 in the
following manner :-
When the cylinder 4 is in operation, see Figure II the lever 6 is at its lowest
position, being mounted on a movable fulcrum 8, and motion is imparted to the
catch 18, and needle 3 and catch 19 as in the ordinary dobby. When the
cylinder 5 is to be operated the lever 6 is brought to its highest position, being
raised by its contact with the lever 7 at the point 7 or 7b also by the change in
position of its fulcrum 8, and thus clears the indications of cylinder 4 and is
prepared to transmit the motion received, by means of the lever 7, from the
cylinder 5 to the catches 18 & 19 see Fig. 1. Each intermediate lever of the
series 7 has an extended projection 7b & the series of levers 6 is adapted to same
and thus when the cylinder 6 is in operation the series 7 acts as a grid for the
series 6.
The lever 7 is mounted on a fixed fulcrum 9 and has two positions thus when
the cylinder 74 is in operation it is raised clear of the cylinder 5 and also clear of
the lever 6, see Fig. If and when the cylinder 5 is in operation it is in its normal
position, see Fig. I, and imparts the indications received from this cylinder to
the catches 18 & 19 by means of the lever 6.
The lever 10 which determines the position of the fulcrum 8 of the lever 6, is
connected to the rod 11, which regulates the position of the lever 7, by the rod 12
and levers 13 & 13" and thus the two levers 6 and 7 work in unison.
The cylinders 4 & 5 are intermittently revolved by the catches 14 & 15 the
latter being operated from any motor part of the dobby or loom and the position
of the two guide plates 16 & 17 determines which cylinder is to be operated same
as described in our Specification of Letters Patent Numbered 25237 of 1894.
A supplementary cylinder may be employed same as in the before mentioned
specification for controlling, the position of the guide plates, the fulcrum of the
lever 6, and the position of lever 7, or the same may be controlled by hand.
From the foregoing it will be seen that when the cylinder 4 is in operation
the lever 7 is inoperative and when the cylinder 5 is in operation the lever 6
transmits the motion from this cylinder to the catches 18 & 19 and thus two
indications are imparted intermittently from the two cylinders 4 & 5 to the dobby.
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: —
The combination and arrangement of the two levers 6 & 7 whereby two
indications can be imparted intermittently to the dobby as described and specified.
Da Jove of October 1000
RICHD. L. HATTERSLEY.
SIMEON JACKSON,
Applicants.