Improvements in Apparatus employed in Jacquard Looms.
Year: 1891

page_text: Date of Application, 20th Nov., 1891
Complete Specification Left, 16th June, 1892-Accepted, 16th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus employed in Jacquard Looms.
I, SIDNEY AQUILA ELLIS, of 12, Cutler Heights Lane, Bradford, in the
County of York, Overlooker, do hereby declare the nature of this invention to be
as follows:-
This invention relates to an improved construction of the jack blades, jack
hooks, or uprights and needles of Jacquard looms, the object being to dispense
with the spring on the shanks of the needles usually employed for pressing the
said needles against the cards, and to substitute more reliable apparatus therefor.
The jack hooks or blades are elongated above the hooked part of same, and
their upper ends form slanting terminations which work in holes or guiding slots
in a guide-board attached to the framework of the loom. The lower extremities
of the jack hooks are connected to the harness as usual. The needles are pro-
vided with projections, at the forked part of same, against which the jack blades
bear, the projections being so arranged that when the sliding or lifting bars are
clear of the hooks, the jack blades force the needles against the cards and through:
the perforations thereof, where they occur, but when the jack blades are lifted the
slanting terminations of same, in their motion through the guide-board, cause
the needles to retire from the cards.
Dated this 19th day of November 1891.
CROSSLEY & Co.,
72, New Market Street, Bradford, Yorks, Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus employed in Jacquard Looms.
I, SIDNEY AQUILA ELLIS, of 12, Cutler Heights Lane, Bradford, in the
County of York, Overlooker, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to an improved construction of the jack-blades, jack-hooks
or uprights and needles of Jacquard looms, the objects being to dispense with the
spring on the shanks of the needles usually employed for pressing the said needles
against the cards, and to substitute more reliable apparatus therefor.
In the drawings accompanying this Specification,
Fig. is a sectional front elevation, showing the grates at one end of the
jacquard operating mechanism, with my improvements applied thereto.
Fig. 2 is an enlarged view of one of the jack-blades, jack-hooks or uprights,
fashioned according to my invention with some of the parts appertaining thereto,
partly in section.
Figs. 3 and 4 are similar views to those represented in Fig. 2, but showing the
apparatus in different positions.
Fig. 5 is an enlarged view of one of my Jacquard needles, and
Figs. 6 and 7 represent needles as hitherto employed.
The jack-hooks or uprights A are elongated above the hooked part of same, and
their upper ends form slanting or curved terminations a, a, which work in holes or
guiding slots in a guide-board or grate B attached to the Jacquard framework of
the loom. The lower extremities of the jack-hooks or uprights A. are attached to
the harness as usual. The needles Care provided with projections, c¹, which

page_text: bear against the uprights A, such projections c, e, being so arranged that when the
sliding or lifting bars D and E are clear of the hooks on the uprights A the cards
on the cylinder (not shown) force the said needles C against such uprights; but
when the said jack-blades or uprights A are lifted, the slanting or curved termina-
tions a, a, of same, in their motion through the guide-board or grate B, cause the
uprights A to clear one or the other of the lifting bars D or E.
Fig. 1 shows the general arrangement of the parts constituting my invention.
Kis the long grate and L the short grate of the lifting apparatus. This figure
also shows two of the uprights A. in the positions they would assume, when lifted
to the top by one of the lifting bars or knives E and when just about to be lifted
by one of the lifting bars or knives D, respectively. F are guiding wires.
In Fig. 2 the upright A is represented as down with the point of the needle C
in a perforation in the card (not shown). If the upright A were being lifted, and
were only half the full distance upwards, by a lifting bar or knife, for example D
as shown in Fig. 3, the slanting or curved part a' would cause the hook a to clear
the other lifting bar or knife E (which is now descending) as shown, and the
upright would be free to pass to the top of its lift, arriving there in the position
shown in Fig. 4. In this latter figure the needle C is pressed against, at the point,
by the card (not shown); but if the point of the needle should happen to be in a
perforation in the card the upright A would be in a position slightly forwards, and
its lower hook would rest on the fixed bar H, until released again by the card
pressing on the point of the needle by the return motion of the card cylinder,
when the upright would be free to continue its up and down motion, and so on.
Fig. 5 is an enlarged plan of one of my improved lacquard needles, showing
the manner of bending same to form the projections and ¹: A represents, in
cross section, an upright in proper position. In the forms of needles shown in the
enlarged part plans Figs. 6 and 7, which illustrate the style usually at present
employed, there are certain disadvantages which would make them unsuitable for
use with my system of uprights; the eyelets in Fig. 6. besides the fact of there
being a large amount of friction and consequently quick wear, would not allow of
sufficient play in the motions of my improved double uprights A: in the case of
Fig. 7 the uprights are liable to slip out of their proper places against the needle
and so produce
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a miss in their action.
By the employment of my improved Jacquard apparatus a larger amount of
work may be accomplished in a much shorter time than heretofore, while the
friction and the cost of apparatus are reduced to a minimum.
Having now particularly described and ascertained the nature of my said inven
tion, and in what manner the same is to be performed, I declare that what I
clain is-
1. The improved construction of double uprights or jack-hooks A provided
with the upper curved or slanting extensions and operating in the manner and
for the purposes substantially as described and shown on the drawings.
2. The improved form of Jacquard needles C substantially as and for the
purposes hereinbefore described and as shown on the drawings.
3. The guiding-board or grate B for guiding the motions of the uprights A
through the medium of the upper curved or slanting extensions a and a substan
tially as described and shown.
4. The combination of the jack-blades, jack-hooks or uprights A and guiding
board or grate B with the needles C all constructed and operating in the manner
described and shown or any mere modification of same.
Dated this 11th day of June 1892.
CROSSLEY & Co.,
72, New Market Street, Bradford, Yorks, Agents.