Improvements in Apparatus for Operating the Healds in Looms for Weaving.
Year: 1890

page_text: Date of Application, 14th July, 1890
Complete Specification Left, 14th Apr., 1891-Accepted, 16th May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Operating the Healds in Looms
for Weaving.
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 combine certain mechanism in such a manner
as to construct a machine for operating the healds and warp threads in looms for
weaving so that, when any of the healds and warp threads have been raised, and
the pattern surface requires the same to remain up for one or more picks of the
shuttle, they are held in that position until liberated by the pattern surface
mechanism.
We accomplish our object in the following manner.-To a suitable framework
we mount a series of draw bars equal to the number of healds required by the
pattern of the fabric: each set of draw bars is composed of three bars, two for
operating the healds and one for retaining them in position when raised, and are
connected to the healds by bell crank or other levers in the ordinary manner.
Mounted in grooves formed in the framework of the apparatus are two
reciprocating draw knives operated in the usual manner, and between the two draw
knives is fixed a stationary bar of similar section.
The draw bars are mounted in openings similar to a grate, one grate is formed
by the operating needles, each needle having three projections thereon for supporting
one end of the said draw and retaining bars, below which are mounted levers
operated by the usual peg mechanism of the pattern surface.
When any of the last named levers are raised, the respective needles remain in
their normal position, thereby allowing one of the reciprocating draw knives to
engage with one of the draw bars and operates the same, thus raising the healds,
the centre bar engaging with the before mentioned stationary bar when near the
termination of the stroke; and should the design of the fabric require the healds
to remain up on the return pick of the shuttle, the pattern surface levers are again
operated, and by the respective needles retaining their normal position, the
retaining bars also remain in contact with the stationary bar; thereby retaining
the respective draw bars and healds in the same position; but should the needles
be raised, then the retaining bars are liberated and the healds and warp threads
lowered.
11
ليمي
1
T 1
1000
JOHN WAUGH,
Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Operating the Healds in Looms
for Weaving.
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 combine certain mechanism in such a manner
as to construct a machine for operating the healds and warp threads in looms for
weaving, so that, when any of the healds and warp threads have been raised, and

page_text: the pattern surface requires the same to remain up for one or more picks of the
shuttle, they are held in that position until liberated by mechanism combined with
the pattern surface.
In the accompanying drawings
Fig. 1 represents the side elevation of a heald operating machine suitable for
our new combination of draw bars, one side of the machine is removed to more
clearly show the interior, and
Fig. 2 represents the side elevation of the operating needles.
Supported by the frame A. of the apparatus are mounted series of draw bars
equal to the number of healds required by the pattern of the fabric: each set of
draw bars is composed of three bars, two of which C and D are for operating the
centre bar E which is hinged to bar E¹ at S. and the bar E' connected to the
healds by a bell crank lever F. or other lever in the usual manner.
The reciprocating draw knives G and H are operated in the ordinary manner
by the rocking lever J and connecting rods K and K. and between the said draw
knives is secured an additional bar L for holding the centre bars E and the healds
in an elevated position.
The draw bars C and D are mounted as usual between openings similar to a
grate, by our arrangement one grate R. is formed by the operating needles M.
being placed side by side, as in Fig. 2, and supported by suitable framework. Each
needle M is prepared with three projections thereon for operating the bars C. D
and E when required by the pattern surface and below the needles M are mounted
a series of levers N upon a fulcrum pin at N¹ the levers on each change in the
pattern being operated by the reciprocating and intermittent rotating lag
cylinder P. to which motion is imparted in the usual manner.
When any healds are down forming the bottom of the "shed" the respective
centre retaining bars E and the draw bars C and D are back towards the centre
of the machine, and if the healds are to remain down no peg Qin the pattern
surface of the top lag presents itself to the respective levers N. which will then be
in the position shown by dotted lines, and the needle or needles M lifted up so
that, the draw bars are clear of the reciprocating draw knives G and H. thus
leaving the draw bars C and D and the centre retaining bar E back in the position
that the healds remain at the bottom of the "shed."
When the pattern surface requires a change in the position of the healds, a
peg Q in the top lag will raise the respective lever N to the position shown by
full lines, thereby allowing the corresponding needle M. to descend, and one of the
draw bars C or D to engage with a draw knife G or H. by which the draw bar
and the centre or retaining bar E will be operated in the direction that, the
healds connected therewith are raised the centre or retaining bar E being operated
such a distance, that it engages with the additional stationary bar L, and if the
healds are required to remain up, the retaining bar E will remain engaged with
the stationary bar L for so many picks of the shuttle as there are pegs Q in the
lags for keeping the respective lever or levers N in the position shown by full
lines.
When any of the healds that are raised are to be lowered, a blank space on a
lag presents itself to a lever N. by which the lever is allowed to move into the
position shown by dotted lines, thereby raising a needle M, which lifts the centre or
retaining bar E to the position shown by dotted lines clear of the stationary bar L
by a projection P¹ on the needle, and at the same time raising that draw bar C or D
which may be at the inner end of its traverse clear of the draw knife, and the
other draw bar to engage with the receding draw knife, thereby lowering the
retaining or centre bar E and the healds connected thereto.
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. The combination of the draw bars C and D. with a retaining bar E. stationary

page_text: bar L and operating needles M arranged substantially in the manner and for the
purpose as herein before set forth.
2. In a heald regulating machine the combination of the draw bars C and D.
with the bar E and stationary bar L arranged substantially in the manner as
hereinbefore set forth.
2
+1 1001
JOHN WAUGH,
Agent.