IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1879

page_text: LETTERS PATENT to Theophilus Hanson, of Bradford, in the County of York,
Mechanic, for the Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING."
Sealed the 9th December 1879, in pursuance of an Order of the Lord Chancellor,
and dated the 14th May 1879.
PROVISIONAL SPECIFICATION left by the said Theophilus Hanson at the
Office of the Commissioners of Patents on the 14th May 1879.
THEOPHILUS HANSON, of Bradford, in the County of York, Mechanic. " IM-
PROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to improved mechanism for placing the knives in position
for the draw bars, and for securing the knives in position when desirable to make
two or more picks without change of position of the healds, and to improved
apparatus for squaring the healds when an "end is down," and to an adjustable
guide bar or rest for cranks when the healds are squared.
In combination with the knives are lifting catches, the latter operated by pegs;
the catches raise or put the knives in position for the draw-bars, and when the
latter acts upon the knife, drawing the same forwards, the end of the lifting catch
enters a recess in the knife, supporting the same in its raised position, so long as
the pegs act upon the lifter catch, there being no change or movement of the healds
until required by pattern of piece being woven.
The lifting catches are mounted upon a cross bar attached by link to a hand
lever; another link is connected to the said lever, and arranged that when the
latter is moved the bars act upon the lifting catches, and upon the needles, sliding
the whole until the healds are squared; a resting bar for the cranks extends across
the jacquard; such bar is mounted upon adjustable bearings, so that the healds may
be squared at any position relative to the race.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Theophilus Hanson in the Great Seal Patent Office on the
9th December 1879.
THEOPHILUS HANSON, of Bradford, in the County of York, Mechanic.
PROVEMENTS IN LOOMS FOR WEAVING."
"TM-
This Invention relates to improved mechanism for placing the knives in position
for the draw bars, and for securing the knives in position when desirable to make
two or more picks without change of position of the healds when an end is "down,"
and to an adjustable guide bar or rest for the cranks when the healds are squared.
In combination with the knives are lifting catches, the latter operated by pegs ;
the catches raise or put the knives in position for the draw bars, and when the
latter act upon the knife drawing the same forwards, the end of the lifting catch
enters a recess in the knife, supporting the same in its raised position so long as
the pegs act upon the lifter catch, there being no change or movement of the healds
until required by pattern of piece being woven.
The lifting catches are mounted upon a cross bar attached by link to a hand
lever another link is connected to the said lever and so arranged that when the
latter is moved the bars act upon the lifting catches and upon the needles, sliding
the whole until the healds are squared; a resting bar for the cranks extends across
the jacquard; such bar is mounted upon adjustable bearings, so that the healds may
be squared at any position relative to the race.
Such being the nature and object of the Invention, I will now describe the
particulars thereof, which will be fully understood by the following description,
aided by the annexed four Sheets of Drawings, in which Fig. 1 is a longitudinal
elevation, partly in section; Fig. 2, end elevation of Fig. 1; Fig. 3, elevation of
parts, framework of loom being omitted; Figs. on Sheet 4 are parts detached in all
the Drawings, the parts are about full size.
The healds are lifted by the crank levers A, which are pulled by the blades B¹,
also shown in other positions at B2, B³. The arm C is operated upon by an
eccentric on the tappet shaft of the loom, and by means of the links D¹ and D² draw
backwards and forwards the knives E' and E. The lever F carries the cylinder
G with lags H containing pegs I, according to the required pattern. This lever F
When a blade is
is operated by an eccentric on the crank shaft of the loom.
required to be drawn forward from the position of B¹, so as to lift the heald, the peg I
is lifted by the lever F and cylinder G, and raises the catch J, which in turn lifts
the blade B; on each of the blades are two catches K and L, hung in such a way
that whenever the blade is lifted the two catches lift with it the upper one by the
clip L', the lower one by the tongue W resting against the underside of the blade,
and thus become in position to be engaged with one or other of the two knives E
and E. But if either of the two catches K and L when lifted become engaged by
one of the travelling knives E' or E2, the catch continues engaged owing to the
bevel or angle of two surfaces in contact; but the blade itself B₁ is at liberty to
fall by its own weight on the hinge of the catch, and carries with it the other catch
not engaged. The blade therefore or any number of them in the same position
would be carried forward by travelling knife E¹ or E³, and so raise the heald or
healds.
As soon as the catch J has lifted the blade B¹ into position the catch J falls by
its own weight, and the blade after being carried forward by the travelling knife
is then at liberty to return to its original position (being drawn back by weights

page_text: or springs as usual), should the pattern require it to do so.
If however the pattern
requires the heald to remain up, or, in other words, the blade to be retained in its
forward position, the catch J is again lifted, and will then come up into the recess
or notch N in the blade, and when the travelling knife returns the blade will
follow until the catch J becomes engaged in the notch N, and the two will remain
in contact, thus preventing the blade from returning till the return of the knife,
which at every pick liberates the catches J by carrying forward slightly the
catches K, L, and allow the catches J to drop to their original position. The
catches K, L, are put into position for the knives to ease them at every pick, by
the blades passing through a grate O, and by means of a swell or incline.
blade;
the blade is lifted in passing through the grate, and the catches are thereby
raised to the position shewn in K2, L2, allowing one or other of travelling knives
to touch and slightly move forward the catches K or L at every pick, and thereby
ease the catches J.
* on the
At every pick the cylinder G is turned part of its revolution by the lever F, and
the engaging catch M, and a fresh lag is presented under the catches J. So long
as a peg is presented under one or any of the catches J, whenever the cylinder G
is lifted the pegs I will lift the catch J or any number of then, and so will either
raise the blades B' into position to be carried forward, or will retain any that may
have been carried forward as at Bs; in event of any blade not falling by its weight,
so as to allow the knives to pass freely without coming in contact with the catches
K or L when required, another swell I is made on the upper side of the blade,
which comes in contact with the bar M2, and forces the blade down, so as to carry
the catches K, L, low enough for the knives to clear when travelling.
In order to set the healds suitable for the slay board or going part of the loom
an adjustable bar P is used, which is carried by a bracket Q fixed on each side of
the machine in a radial slot hole Q1 by means of a bolt, the centre of the bracket
moving on the pin På as a centre, the pin P2 carrying the crank levers A.
To bring the healds all to one level for taking up a broken end, or for other
purpose the blades B', B³, are brought into the centre or position of blade B2 by
means of a lever S carried on the shaft S¹ as fulcrum, and which shaft extends
across the machine; and connected with the lever S are links T1, T2, there being
like links on the other side of the machine; the links T" carry a cross bar U, and
the links T2 carry the cross bar V, upon which are the catches J. By moving the
handle S to the position of dotted line S² motion is imparted by the links T", T³, to
the cross bars U and V, the bar U pressing against the lugs W2 of such of the
blades as are in position of B', forces these to the central position B3, whilst the bar
V by its motion in the direction of position B2 admits of the ordinary weights or
springs drawing the blades B³ to the position B2, and so the whole are even and
there is a level shed. The bars U, V, work in the slots W¹ and Ws. When the lever S
is returned to its former position, the retreat of bar U allows the weights to draw
the blades B¹ back to their original position, whilst the opposite motion of catch J
carries with it the blades Bs to their original position, and so all the parts assume
the station occupied before the lever S was moved.
By this arrangement the levelling motion is distinct from the action of the
machine or loom, and is only used when actually required for purpose aforesaid.
The lever S is kept in position by a spring or notch, or other similar arrange-
ment.
Having thus fully described the nature and particulars of this my Invention
together with the manner in which the same is to be performed or carried into
practical effect, I would have it understood that I claim as my Invention,-
Firstly. The combination of lever S, links T', T², cross bars U and V for squaring
the healds as herein described.
Secondly I claim the anno
T and 17 S.

page_text: blades in position for the knives in combination with the parts S, T, T², U, and V,
for squaring the healds, as herein described and illustrated.
In witness whereof, I, the said Theophilus Hanson, have hereunto set my
hand and seal, this Fifth day of December, in the year of our Lord One
thousand eight hundred and seventy nine.
Witness,
WALTER BRIERLEY,
Patent Agent,
Halifax & Blackburn.
THEOPHILUS HANSON. (L.S.)