Improvements in Double-lift Jacquards for Looms.
Year: 1889

page_text: Date of Application, 8th June, 1889
Complete Specification Left, 7th Mar., 1890-Accepted, 12th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Double-lift Jacquards for Looms.
We, WILLIAM JOHNSON CHEETHAM, Manufacturer, and SYKES SUTCLIFFE,
Managing Overlooker, both of Savins Mills, Kirkstall, near Leeds, in the county of
York, do hereby declare the nature of this Invention to be as follows:-
--
We employ a clearing bar pivotted above both sets of knives, to each clearing bar
is attached a pivotted vertical lever connected to a spring hammer having double
inclines bearing against a fixed runner.
The uprights have a turn or projection about half way their length which after they
have been lifted engages with a fixed knife which holds them up until they are
required to go down.
When they are going down they are held off the knife which is coming up by the
clearing bar until they get past the centre.
By this arrangement only one neck cord is required where two have been used
before, and as there is no jerking of the cords, they will last considerably longer.
Dated this 7th day of June 1889
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Double-lift Jacquards for Looms.
We WILLIAM JOHNSON CHEETHAM Manufacturer, and SYKES SUTCLIFFE,
Managing Overlooker, both of Savins Mills, Kirkstall, near Leeds 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 :-
Fig. 1. is a front elevation in section showing long and short grate.
Fig. 2. is an enlarged view of part of Fig. 1. showing levers and pushing or
clearing bars of long grate.
A and A' are the pushing or clearing bars pivotted above each set of knives B
and B'; to each clearing bar A in the long grate is attached a pivotted vertical
lever C, connected by rod C₁, to a spring hammer D, having double inclines E,
bearing against a fixed runner F each time the grate rises up.
When the long grate is going up its hammer D, comes in contact with the fixed
runner F, and moves the levers C, and clearing bars A forwards, holding the
uprights S of the short grate, (which are coming down) clear of the knife B, until past
the centre.
In the lower grate, the pushing or clearing bars A', are pivotted to the side
plate L, their lower ends being between the pins M upon the bar N, which is
connected by stud or pin P to the hammer rod D. The action is as follows:-—when
the lower grate rises, and the hammer is moved by coming in contact with the fixed
runner F, the lower ends of the pushing or clearing bars A¹, move forwards (as shown
in dotted lines) and push the uprights which are coming down on the long grate
clear of the knives B¹, and hold them clear until past the centre.
When the grates are going down the hammer heads D, are jointed so as to lift up
and pass the runner F, without their respective shafts or rods D' being pushed back.
The springs D³, return the hammers to their position.

page_text: The upright wires S have a turn or projection H, about three quarters of their
length, which after they have been lifted, engages with the fixed knife J, which holds
them up, until they are required to go down.
K is the neck cord attached from the healds to the hook R, formed at the bottom of
each upright S, this arrangement of hook greatly facilitates the tying of the neck
bands.
The top of the upright is bent over to form the required hook T, which is
extended inwards so as not to be liable to get between the knives and the clearing
bars,
By the above arrangement, only one neck cord is required, where two have been
used before, and as there is no jerking of the cords, they will last considerably longer,
as well as the rest of the harness; they are more easily put on, and the loom can be
run from ten to twenty picks per minute faster than with double neck cord.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we would have it understood
that we do not confine ourselves to the means employed for clearing the uprights of
the knives, as it may be done by various other mechanical equivalents, but we declare
that what we claim is :-
1. Pushing back and holding the uprights clear of the knives coming down for the
purposes, such as shown and described.
2. The uprights S having extended top hook T, and lower hook R, for the purposes,
such as shown and described.
8. The general arrangement and construction of apparatus as and for the purposes,
such as shown and described.
Dated this Sixth day of March 1890.
JOHN E. WALSH,
Agent for the Applicants.