IMPROVEMENTS IN. LOOMS FOR WEAVING
Year: 1860

page_text: LETTERS PATENT to James Greenwood, of Halifax, in the County of
York, Damask Manufacturer, for the Invention of "IMPROVEMENTS IN.
LOOMS FOR WEAVING."
Sealed the 8th March 1861, and dated the 11th September 1860..
PROVISIONAL SPECIFICATION left by the said James Greenwood' at the
Office of the Commissioners of Patents, with his Petition, on the 11th
September 1860.
I, JAMES GREENWOOD, of Halifax, in the County of York, Damask Manu-
facturer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN LOOMS FOR WEAVING," to be as follows:-
This Invention relates to looms for weaving damasks, reps, or other figured
fabrics, for the production of which jacquard engines are employed; and the
improvements consist in constructing, combining, and arranging the mecha-
nism thereof in such manner as to give time and ease in the draught or in
turning the jacquard cylinder for change of cards, and lifting or drawing the
figure by causing a false pick to be made or no shuttle. picked at such time of
change, which I effect by connecting the two picking levers with a rod, which
is actuated by a cam or tappet and gear wheels of suitable proportion, which
receive motion from the tappet shaft or from the crank shaft of the loom, so
as to change the pick at the proper time from one end of the loom to the
other, or cause two picks in succession to be made from one end, the second
or false pick being made at the time when the cards are changed and when

page_text: no shuttle is in the box. The tappet for drawing the figure is constructed so as
to lift more gradually, occupying the time when no pick is being made, thus
avoiding sudden action and preventing breakage or great wear and tear of the
loom, also equalizing the power required in driving the same.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Greenwood in the Great Seal Patent Office on the
11th March 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
GREENWOOD, of Halifax, in the County of York, Damask Manufacturer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent bearing date the Eleventh day of September, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Greenwood, Her special liense that I, the said James
Greenwood, my executors, administrators, and assigns, or such others as I, the
said James Greenwood, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN LOOMS FOR WEAVING," upon the condition (amongst others) that I,
the said James Greenwood, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed in
the Great Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said James Greenwood, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement (that is to say) :-
This Invention relates to looms for weaving damasks, reps, or other figured
fabrics, for the production of which jacquard engines are employed; and the
improvements consist in constructing, combining, and arranging the mecha-
nism thereof in such manner as to give time and ease to the draught, or-in

page_text: turning the jacquard cylinder for change of cards, and lifting or drawing the
figure by causing a false pick to be made, or no shuttle picked at such time of
change, which I effect by connecting the two picking tappets with a rod,
which is actuated by a cam or tappet and gear wheels of suitable proportion,
which receive motion from the tappet shaft or from the crank shaft of the
loom, so as to change the pick at the proper time from on end of the loom to
the other, or cause two picks in succession to be made from one end, the
second or false pick being made at the time when the rds are changed and
when no shuttle is in the box. The tappet for wing the figure is con-
structed so as to lift more gradually, occupying the time when no pick is being
made, thus avoiding sudden action and preventing breakage or great wear and
'tear of the loom, also equalizing the power required in driving the same.
This Invention will be readily understood by reference to the accompanying
Sheet of Drawings, in which similar letters refer to the same parts in each
Figure.
Fig. 1 is an end elevation of an ordinary damask loom, or a loom suitably
constructed and arranged for weaving damasks, reps, or other figured fabrics;
Fig. 2 is. a back elevation of same, or so much thereof as is requisite to
shew the application of my improvements.
A and B are the two picking tappets, which are capable of sliding on bosses
fixed to the tappet shaft C, but without turning round thereon, and are con-
nected by forked arms d, d¹, fixed to the rod D, which is jointed at one end to a
forked lever E hinged on a stud fixed in a bracket e, the forked end clipping or
spanning the edges of a cam or tappet F, which is connected to a spur wheel
G running loose on a stud fixed to the loom frame and gearing with a pinion
G¹ of suitable size fixed on the tappet shaft. The tappet F is shewn in detail
at Figs. 3, 4, and 5, by which it will be seen that at each half rovalution
thereof the forked lever E will be operated, and cause the rod D to move
endwise, the arms d and d¹ causing the picking tappets to slide on the bosses
fixed to the shaft C, the one into contact and the other out of contact with the
picking levers H and I, which act upon their respective picking cones and i;
J is the tappet, which works or operates the jacquard engine through the
medium of the lever K and friction pulley K' and the connecting rod. L; M
are a series or set of twelve tredding tappets; and N are corresponding levers
for operating the heddles, which open or form the shed shewn in detail at
Fig. 6, where it will be observed that at or after every four tappets there is a
blank or space, so that in the rotation of the shaft four tappets in succession
will operate upon their respective levers and beddles to change the shed; but
the next distance. being blank or without tappet there will be no action on the

page_text: heddles; and the other parts are so arranged that during this interval of time
the tappet J will be operating on the lever K, and working the jacquard
engine, the form of this tappet. being such as to occupy the time or space of
.the blank tredding tappet and change of pick consequently will be an easy lift,
also the tappet or cam E will be operating upon the rod D and changing the.
pick, so that a false pick will be made or no shuttle propelled, it being under-
stood that the noses on the picking tappets are so arranged or placed as to
cause a pick from each end of the loom to be made alternately in the ordinary
mode of picking, so that when the tappets are moved there will be two picks from
one end of the loom in succession, the second pick having no shuttle to propel.
It will be evident that the main object of this Invention is to equalize the
application of the power required for driving the loom and prevent undue
strain or wear and tear of the working parts, consequently to economize the
costs of such machinery, and also the power required to work it. This Inven-
tion of making a false pick may be applied to plain weaving when working the
heddles, or when it is required to make a double beat-up of the lathe to one
pick, as in plain reps or other similar fabrics.
Having thus fully described the nature of my said Invention, and the
manner in which the same is to be performed, I would have it understood that
I do not confine myself to the precise details as herein set forth; but what I
-claim as of my Invention is, the constructing, combining, and arranging the
mechanism of looms for weaving damasks or other figured fabrics, reps, or other
fabrics where time is required for the extra beat-up of lathe, and getting up of
the sheds before the pick is made, in such manner as to obtain or produce a
false pick or no pick during such operations, substantially as herein described
and illustrated in the accompanying Sheet of Drawings.
In witness whereof, I, the said James Greenwood, have hereunto set
my hand and seal, this Eighth day of March, One thousand eight
hundred and sixty-one.
Signed, sealed, and delivered by the
within-named James Greenwood, in
the presence
of
W. TASKER, Patent Agent,
Halifax.
JAMES GREENWOOD. (L.S.)