IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1878

page_text: "
LETTERS PATENT to Reuben Calvert Stephenson, of Bradford, in the County
of York, Machinist, for the Invention of IMPROVEMENTS IN LOOMS FOR
WEAVING."
PROVISIONAL SPECIFICATION left by the said Reuben Calvert Stephenson
at the Office of the Commissioners of Patents on the 2nd December 1878.
REUBEN CALVERT STEPHENSON, of Bradford, in the County of York, Machinist.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to improved apparatus for imparting a positive motion
both upwards and downwards to the healds without the aid of springs or weights.
According to one arrangement of mechanism for purpose aforesaid I employ sector
siides operated by levers and connections from the crank shaft; the said slides
actuate the hooked ends of the grifes; the other ends of the upper and lower grifes
are connected to the vertical arms of a four way. or double crank lever, the heald
cords from the upper and lower heald staves being attached to the other or hori-
zontal arms of the four way or double crank lever, so that as the said lever is moved
so will one of its arms draw up the healds, its other arm drawing down the healds
by a like positive motion. There is also on the arms of the sector slide a lug or
projector carrying a bar which acts upon the vertical arms of the double crank lever
so as to place the hooks in position for change as required, according to the pattern
being woven. Another arrangement for a like purpose comprises a combination of
upright recessed slides (connected to the heald cords) and needles. The needles are
carried in a frame, receiving to and fro motion from the treading lever; the needles
are operated or moved laterally by peg or card mechanism so as to place their ends
within the recess of one or other of the vertical slides as the healds are to be moved
downwards or upwards, according to the pattern of the piece being woven.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Reuben Calvert Stephenson in the Great Seal Patent Office on the
30th May 1879.
REUBEN CALVERT STEPHENSON, of Bradford, in the County of York, Machinist.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to improved apparatus for imparting a positive motion
both upwards and downwards to the healds without the aid of springs or weights.
According to one arrangement of mechanism for purpose aforesaid I employ
sector slides operated by the crank levers and connections from the crank shaft.
The said slides actuate the hooked ends of the "grifes;" the other ends of the upper
and lower "grifes" are connected to the vertical arms of a four way or double crank
lever, the heald cords from the upper and lower heald staves being attached to the
other or horizontal arms of the four way or double crank lever, so that as the said
lever is moved so will one of its arms draw up the healds, its other arm drawing
down the healds by a like positive motion. On the arms of the sector slide are lugs
or projections carrying a cross bar which acts upon the vertical arms of the double
crank levers so as to place the hooks and grifes in position for change as required,
according to the pattern being woven, and levelling the shed.
Another arrangement for a like purpose comprises a combination of upright.
recessed slides (connected to the heald cords) and needles. The needles are carried
in a frame, the latter receiving to and fro motion from the treading lever. The
needles are operated or moved laterally by peg or card mechanism so as to place the
ends of the needles within the recess of one or other of the vertical slides, accord-
ingly as the healds are to be moved downwards or upwards as to the pattern of the
piece being woven requires.
Such being the nature and object of this my said Invention, I will now proceed
to describe the same in detail, and in order that the Invention may be fully under-
stood I have hereunto annexed two Sheets of Drawings and have marked the same
with figures of reference, the same figure referring to the same part in the various
views or Figures.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side elevation of the improved apparatus.
Fig. 2, an end elevation of Fig. 1.
1 and 2 are the sector slides operated by bell crank levers 3 and connections from
the crank shaft 4 receiving a lateral reciprocating or to and fro motion upon the
crank friction bowls or rollers 4'. The said slides and cross bar * actuate the hooked
ends of the grifes 5; the other ends 6 of the upper and lower grifes are connected to
the vertical arm 7 of a four way or double crank lever 8, the heald cords 9 from the
upper and lower heald staves being attached to the other or horizontal arms of the
four way or double crank lever 8, so that as the said lever is moved so will one of
its arms draw up the healds, its other arm drawing down the healds by a like
positive motion.
On the arms of the sector slide 2 are lugs or projections carrying a cross bar 10
which acts upon the vertical arms 7 of the double crank levers 8 so as to place the
hooks and grifes in position for change as required, according to the pattern being
woven, and at each beat up levelling up the healds and warp.
In the modified arrangement of above, shown at Figs. 3, 4, and 5 (Sheet 2) a
combination of upright recessed slides 11, 11, (connected to the heald cords 12) and
needles 13. The needles are carried in a frame 14, the latter receiving "to and
fro motion from the treading lever 15 and connecting rod 16; the needles are
operated or moved laterally by peg or card mechanism 17 so as to place the ends of
the needles 13 within the recess 18 of one or other of the vertical slides 11 so that
"

page_text: the motion of the frame 14 will by the needles 13 carry up or force down one or
other of the recessed slides 11 attached to the heald ends, according as the healds are
to be moved downwards or upwards, as to the pattern of the piece being woven
requires. The needles are withdrawn from the recess 11¹ by spring or elastic.
Having now described the nature and object of my said Invention together with
the manner in which the same is to be or may be performed or carried into
practical effect, I would have it understood that I claim,-
Firstly. The combination and use of the sector slides 1, 2, and four way lever 8,
for purpose as described and illustrated.
Secondly. The combination of sector slides 1, 2, four way lever 8, and cross bar 10
for purposes, and as described and illustrated in Figs. 1 and 2.
Thirdly. The combination and use of the needle frame 14 (the needles 13 acting
as described) and the recessed slides 11, 11', constructed substantially as and for the
purpose described, and as illustrated by the annexed Drawings.
In witness whereof, I, the said Reuben Calvert Stephenson, have hereunto
set my hand and seal, this Twenty sixth day of May, in the year of our
Lord One thousand eight hundred and seventy nine.
Witness,
J. E. WALSH,
REUBEN CALVERT STEPHENSON. (L.S.)
Mechanical Draughtsman to
Walter Brierley,
Patent Agent,
Halifax.