Improvements in Double Lift Jacquards for Looms.
Year: 1893

page_text: Date of Application, 27th June, 1893
Complete Specification Left, 24th Mar., 1894-Accepted, 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Double Lift Jacquards for Looms.
We, GEORGE HERBERT BRIGGS, Manager, and WILLIAM HIRAM DENTON,
Apprentice, both of Eastfield Mills, Halifax in the County of York, do hereby
declare the nature of this invention, to be as follows :-
The object of this invention is to dispense with half the number of uprights
usually employed, and to be enabled to run at a higher speed, also a single neck-
band only is used to each upright.
We employ a series of single uprights or wires having two steps and a hook at
the top, the knives or lifters of one block rise and fall vertically, but the other
block moves towards the uprights at an angle, by means of a runner from the top
block or grate, the said runner working in the groove of a plate or fixed cam or
other equivalent, so formed that it brings forwards every alternate pick, the knives
of the said block, so as to engage with the hook or neb of the uprights and lifts
them clear of the fixed grate, and at the same time keeps them clear of the other
grate of the other block.
In stamping the cards they are stamped so that the uprights stop down (instead
of going up) each alternate pick; thus every other card, a blank signifies a change
that is either a lift or a drop of the upright.
We can employ either 600, 900 or 1200 uprights per jacquard as found suitable.
Dated this Twenty-sixth day of June 1893.
JOHN E. WALSH,
Crossley Street, Halifax, Patent Agent for the Applicants.
Improvements in Double Lift Jacquards for Looms.
We, GEORGE HERBERT BRIGGS, Manager, and WILLIAM HIRAM DENTON,
Apprentice, both of Eastfield Mills, Halifax 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 :-
The object of this invention is to obtain a more open shed, and to dispense with
half the number of uprights usually employed in a double lift jacquard, by using
single uprights instead of double, so greatly simplifying the mechanism, and using
only one neckband to each upright, thus being enabled to run at a much higher
speed, the uprights also being easier to be taken out and replaced.

page_text: opposite side of the upright or wire to the nebs B and B', the knives or lifters D
of the top block K, rise and fall vertically, and operate upon the nebs B₁ of the
uprights or wires required to be lifted; but the knives E of the bottom block L,
move towards the uprights at an angle, (as such block ascends or descends
alternately) by means of a runner F fixed upon suitable brackets G, attached to a
slide G upon the bottom block or grate L, the said runner works in the groove or
slot H of a plate, or fixed cam J, or other equivalent, attached to the Jacquard
frame W; the groove in the cam being so formed, that it brings forward each
alternate pick, the knives E of the said block L, so as to clear the knives D of the
block K, as the same is ascending or descending.
When the block L reaches the top of its traverse, the said knives E engage with
the hooks C, and ease or lift the uprights A (required down) off the stand grate M,
and the pattern card N (operating on the needles P, simultaneously, as the said
block L begins to descend) pushes the said uprights clear of the said stand grate,
allowing the same to descend with the bottom block, and rest upon the bottom
fixed plate R, until again required to be lifted by the top or bottom block, as the
case may be, according to the pattern.
The knives D of the top block K, when lifting the uprights or wires A on to the
stand grate M, engage with the nebs B¹ of such uprights.
When the bottom block (being at the bottom of its traverse) is required to lift
certain uprights, the pattern cards are so stamped that as the said block begins to
ascend they operate upon the respective needles, pressing the said uprights forward,
so that the knives E engage with the hooks C and lift the respective uprights as
desired, when required down they are operated upon by the needles and cards in
the ordinary manner as before described.
In stamping these cards they are stamped so that a blank signifies a change, that
is, either a lift (by pressing the respective uprights on to the knives of the bottom
block L) or a drop of the uprights, by such uprights being pushed off the stand
grate as before described.
By our improved construction of jacquard the mechanism is greatly simplified,
and we can employ 600, 900 or 1200 uprights per jacquard as found suitable.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In double lift jacquards having single uprights or wires, moving one block
forwards at an angle, to clear the uprights engaged with its knives, from the knives
of the other block, each alternate pick, by means of runners and fixed cam grooves
or their equivalents, substantially as shown and described.
2. In double lift jacquards, the combination of single uprights A, blocks K and L,
brackets G, runners F and groove H, fixed plate or cam J all operating as and for
the purposes shown and described.
Dated this Twenty-second day of March 1894.
JOHN E. WALSH,
Crossley Street, Halifax, Patent Agent for the Applicants.