IMPROVEMENTS IN HEDDLE FRAMES of WEAVING LOOмs
Year: 1882

page_text: LETTERS PATENT to Frederic William Pim and Thomas Sands, of the
Greenmount Spinning Company, Harolds Cross, in the County of Dublin,
Ireland, for an Invention of "IMPROVEMENTS IN HEDDLE FRAMES of
WEAVING LOOмs."
PROVISIONAL SPECIFICATION left by the said Frederic William Pim and
Thomas Sands at the Office of the Commissioners of Patents on the
7th January 1882.
FREDERIC WILLIAM PIM and THOMAS SANDS of the Greenmount Spinning
Company, Harolds Cross, in the County of Dublin Ireland. "IMPROVEMENTS IN
HEDDLE FRAMES OF WEAVING LOOMS.'
"
Our said Invention is designed to effect the construction, arrangement, and
working of the healds or heddles of weaving looms by means more economical and
simple than have been hitherto employed so far as we are aware.
To this end we propose to dispense with the levers, springs, bands, and cords,
and also with the rocking or tumbling shafts and other over-head gear hitherto
usually employed for operating the heddles of looms, and in place thereof we form
a frame of suitable size and material, consisting of a top and bottom bar and
opposite side bars, the latter being provided with slots into which the ends of the
horizontal bars slip and are held by suitable means. An intermediate horizontal
bar is also provided in the frame, which intermediate bar forms the lower heddle
shaft, while the upper or top horizontal bar of the frame forms the upper heddle
shaft.
To the centre of the lower or bottom bar of the frame is attached one end of a
vertical rod or bar, the other end of which is secured direct to the treadle of the
loom forming thereby a rigid connection between the treadles and the heddles
capable of conveying a thrust and a pull alternately from the tappet to the

page_text: heddles. The treadles carry a bowl or roller working in a suitably formed cam-
course provided in suitably constructed cams or tappets whereby the required
vertical or shedding motion is imparted to the heddle frame direct through the
intervention of the rigid rod or bar described. Thus it will be obvious that by the
application of our said Invention the use of over-head operating parts is rendered
unnecessary, thereby securing the advantages of greater simplicity and direct action
in working, and obviating the necessity of any re-adjustment of the heddle once
the loom is started, and also avoiding the inconvenience arising from the dropping
of oil and the obstruction of light inseparable from the use of over-head gear. It
is also obvious that any number of these heddle frames may be arranged and
operated in the manner above described according to the description of fabric
required to be produced.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Frederic William Pim and Thomas Sands in the Great Seal Patent
Office on the 6th July 1882.
FREDERIC WILLIAM PIM and THOMAS SANDS, of the Greenmount Spinning
Company, Harold's Cross, in the County of Dublin, Ireland. "IMPROVEMENTS IN
HEDDLE FRAMES OF WEAVING LOOMS."
Our said Invention is designed to effect the construction, arrangement, and
working of the healds or heddles of weaving looms by means more economical and
simple than have been hitherto employed so far as we are aware.
To this end we propose to dispense with the levers, springs, bands, and cords,
and also the rocking or tumbling shafts and other overhead gear hitherto usually
employed for operating the heddles of looms; and in place thereof we form a frame
of suitable size and material, consisting of a top and bottom bar and opposite side
bars, the latter being provided with slots into which the ends of the horizontal
bars slip, and are held by suitable means. An intermediate horizontal bar is also
provided in the frame, which intermediate bar forms the lower heddle shaft,
while the upper or top horizontal bar of the frame forms the upper hoddle
shaft.
To the centre of the lower or bottom bar of the frame is attached one end of a
vertical rod or bar, the other end of which is secured direct to the treadle of the
loom, forming thereby a rigid connection between the treadles and the heddles,
capable of conveying a thrust and a pull alternately from the tappet to the
heddles. The treadles carry a bowl or roller working in a suitably formed cam
course provided in suitably constructed cams or tappets whereby the required
vertical or shedding motion is imparted to the heddle frame direct through the
intervention of the rigid rod or bar above described. Thus it will be obvious that
by the application of our said Invention overhead operating parts are rendered
unnecessary, thereby securing the advantages of greater simplicity and direct action
in working, and obviating the necessity of any re-adjustment of the heddle once
the loom is started, as also avoiding the inconvenience arising from the dropping of
oil and the obstruction of light inseparable from the use of overhead gear.
In order that our said Invention may be more readily understood and carried
into practice we will describe the accompanying Drawings:-
Fig. 1 is a front view, Fig. 2, a plan, and Fig. 3, an end view, showing portion
of the frame-work of a loom supporting the tappets and treadles, and also the
heddle frames.
Similar letters indicate corresponding parts in all the views-A. A. represents
the frame of the loom, B., the shaft on which the cams or tappets are mounted,
C. C. the treadles provided with a bowl d., which latter works in the eccentric
grooves formed in the tappets as indicated by the dotted lines (Fig. 3.) To these
treadles are connected by means of a pivot e, the vertical bars e¹, which carry the
heddle frames f. f. The treadles act on a fulcrum at g. and their free ends move
in vertical slots in the guides h. Vertical motion is secured to the heddle frames
by suitably formed guides clasping the side bars of same in any convenient
manner.
It is obvious that any number of these heddle frames may be arranged and
operated in the manner above described, according to the description of fabric
required to be produced.
Having thus described the nature of our said Invention, and the manner of
carrying the same into practice, we would have it understood that what we

page_text: consider new and useful and therefore claim as the Invention to be secured to us
by the herein before in part recited Letters Patents is :--
The application of heddle frames to weaving looms, whereby the use of overhead
parts is dispensed with; the said heddle frames being constructed and operated in
the nanner herein described and set forth.
In witness whereof we, the said Frederic William Pim and Thomas Sands,
have hereunto set our hands and seals this Fourth day of July, in the year
of our Lord, One thousand, eight hundred and eighty-two.
FRED°. W. PIM. (L.S.)
THOMAS SANDS. (L.S.)