Improvements in connection with the Uprights of Jacquard Machines for Operating the Harness and Healds of Looms.
Year: 1890

page_text: Date of Application, 27th Mar., 1890
Complete Specification Left, 25th Aug., 1890-Accepted, 27th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in connection with the Uprights of Jacquard Machines
for Operating the Harness and Healds of Looms.
We, ISAAC THOMIS, of 85 Kensington Street, Bradford, in the County of York,
Designer, MAHLON PRIESTLEY and JONAS PRIESTLEY, both of Copley Street, Horton,
Bradford, aforesaid, Machine Makers, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to arrange and construct the uprights for what are
known as double lift open shed Jacquard machines in such a manner that, more time
is obtained for the cylinder to alter its position to change the pattern surface, thereby
enabling the jacquard and loom to which it is attached, to be run at a greater speed
than is the case with uprights constructed in the ordinary manner.
With uprights of the ordinary construction, when any are required to be changed,
the card cylinder is kept in contact with the respective cross wires until the ascending
lifting grate has passed the descending hooks of one leg of the uprights, then the
card cylinder is allowed to recede and the uprights to return to their normal
position.
In carrying our object into effect, the reciprocating lifting grates are constructed
and operated as hitherto, but instead of forming each pair of double lift uprights of
one piece of wire, or when formed of two pieces attaching them together at the bottom
by links or other means, we make each pair of uprights separately and mount them in
the machine somewhat in the manner as hitherto but independent of each other.
Between each pair of uprights is placed an additional upright having a hook at
or near the top, and to the bottom is attached the harness or healds in the same
manner as with ordinary double lift uprights. In some part of each additional
upright we place a cross bar having a slot on either side through which the
uprights pass, and when either upright is in the position for the ascending grate to
raise the same, some part of the ascending upright comes in contact with the
cross bar of the additional upright, thereby raising it likewise, the hook of the
additional upright when at the top of its traverse engaging with a supporting bar
until liberated by the card cylinder operating the cross wires and uprights in the
following manner:
When any raised upright is required to be lowered or changed the respective
cross wire embracing the ordinary uprights is operated by the card cylinder, such
a distance that, the hook on additional upright is clear of the supporting bar and
is lowered by the descending grate and upright, where it remains until the pattern
surface allows the uprights to be in such position as to be raised.
By this arrangement of centre or additional uprights, the pressure on the end
of the cross wires is only required until the hooks of the additional uprights are
clear of the supporting bar, thus greatly reducing the time required for the
cylinder to be in contact, and thereby obtaining a corresponding increase of time
for the card cylinder to change the pattern surface.
Dated this 25th day of March 1890.
JOHN WAUGH,
Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in connection with the Uprights of Jacquard Machines
for Operating the Harness and Healds of Looms.
We, ISAAC THOMIS, of 85 Kensington Street, Bradford, in the County of York,
Designer, MAHLON PRIESTLEY and JONAS PRIESTLEY, both of Copley Street, Horton,
Bradford, aforesaid, Machine Makers, 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 :-
The object of this invention is to arrange and construct the uprights for what
are known as double lift open shed Jacquard machines in such a manner, that
more time is obtained for the cylinder to alter its position to change the pattern
surface; thereby enabling the jacquard and loom to which it is attached, to be
run at a greater speed than is the case with uprights constructed in the ordinary
manner.
With uprights of the ordinary construction when any are required to be changed,
the card cylinder is kept in contact with the respective cross wires until the ascending
lifting grate has passed the descending hooks of the other legs of the respective
uprights, then the card cylinder is allowed to recede and the uprights to return to
their normal vertical position, and at the bottom to rest upon the ordinary perforated
guide board.
In the accompanying drawings,
Fig. 1. represents such portions of a Jacquard machine as are required to explain
our invention which is added thereto.
Fig. 2. is a view of a pair of double lift needle bars made according to our invention,
the centre needle is shown resting on the collar of one upright or bar which is
raised.
Fig. 3. is a detached view of a centre needle, and
Fig. 4. a plan of the same.
In carrying our object into effect, the reciprocating grates A and B. are constructed
and operated as hitherto, but instead of forming each pair of double lift uprights or
bars and D. of one piece of wire, or when formed of two pieces, attaching
them together at the bottom by links or other means, we make each pair of
uprights C and D. separately, with a collar L. on each and mount them in the
machine somewhat as hitherto, but independent of each other and with the lower parts
passing through a perforated plate E.
Between each pair of uprights C and D. is placed an additional upright F. having
a hook at or near the top, and to the bottom of the centre upright F. at G.
is attached the harness or healds in the same manner as to ordinary jacquard
uprights.
In some parts of each additional upright F. we secure a cross bar H. having a slot
hole K. cut near each end and through which the uprights C and D. pass, and when
either bar C or D. of the double uprights is in the position for the ascending grate A
or B. to raise the same by the ordinary hooked portion at the top, the collar L. of the
ascending upright being in contact with the cross bar H. of the centre or additional
upright F. raises the latter likewise the height of the "lift," the hook M. of the
additional upright F. when near the termination of its upward traverse engages with
a stationary supporting bar N. similar in section to those on the reciprocating
grates A and B. thereby retaining the harness or healds and warp threads in an
elevated position until liberated by the card cylinder P. operating on the cross wires
and uprights C and D. in the following manner.
When any centre upright F. is raised and resting on a supporting bar N. and the
pattern of the fabric requires it to be lowered, the respective cross wire Q. embracing
the uprights C and D. is operated by oscillating card cylinder P. in the ordinary
manner, at the time when one of the reciprocating grates A or B. is at the extreme or
termination of its upward traverse, and when the hook M. of centre upright F. is

page_text: raised clear of the supporting bar N. the cross wire Q. and respective uprights C and D.
are moved in the direction of the arrow a sufficient distance for the hook M. to clear
the stationary supporting bar N. and held clear by the card and cylinder P. until the
hook is below the top of supporting bar N. and when the upright C or D. and the
centre upright F. arrive at the bottom they will remain until the pattern surface
allows the upright C or D. to be in such position that the hook at the top of one of
the uprights may engage with the ascending grate A or B.
By this arrangement of additional centre upright F. the pressure on the end of the
cross wires Q. is not required until the hooks M. of the additional uprights F. are
raised clear of the supporting bar N. and on lowering, the pressure is only required to
remain on so long, until the books M. are clear of the stationary supporting bar N.
thus greatly reducing the time for the card cylinder P. to be in contact, thereby
obtaining a corresponding increase of time for the card cylinder to rotate and change
the pattern surface, and thus be enabled to proportionately increase the speed of the
loom.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, we declare that what we
claim is
1. In a Jacquard machine, the combination of the uprights C and D. with a centre
upright F. so arranged that when either upright Cor D. is raised the centre upright F.
is also raised and retained by the stationary supporting bar N. whenever required by
the pattern surface until liberated by the card imechanism, substantially in the manner
as hereinbefore set forth.
2. The combination of the uprights C and D. with the centre upright F. operating
by means of hook M upon the cross bar N for the purpose as herein before set forth.
Dated this 9th day of August 1890.
JOHN WAUGH,
Agent.