IMPROVE- MENTS IN JACQUARD MACHINERY OR APPARATUS
Year: 1872

page_text: PROVISIONAL SPECIFICATION left by John Whiteley Ward and Joshua
Charles Rouse at the Office of the Commissioners of Patents, with
their Petition, on the 27th June 1872.
WC, JOHN WHITELEY WARD, Damask and Carpet Manufacturer, and
JOSHUA CHARLES ROUSE, Manager, both of Halifax, in the County of
York, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN JACQUARD MACHINERY OR APPARATUS," to be as follows :—
The Invention has for its object improvements in jacquard machinery
or apparatus, and relates to a novel arrangement and combination of
parts whereby the use of the "ordinary cards" is dispensed with and an
efficient and economical substitute provided therefor.
In ordinary jacquard machines the needles which control the harness
and warp threads are operated upon by stamped or perforated cards, one
set of which is required for weaving every new design. We propose to
dispense with these cards as they are costly, easily damaged, and liable
to get out of repair, and we substitute for them an endless chain of
lags" provided with pins, pegs, or recesses which can be adjusted to
various lengths, and which act upon and in combination with vertical
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page_text: sliding bars or fingers. These sliding bars or fingers carry projecting
pieces intended to act upon the ends of the jacquard needles in place of
the card now commonly used, each "lag" in fact with its pins or
recesses being an equivalent for the perforated card now employed, and
just as the ordinary card is stamped to represent its own particular
portion of the design, so are the lengths of the pins or recesses of each
‘lag" similarly adjusted and arranged, and as the "lags" are suc-
cessively presented to the vertical fingers, the positions of the latter with
their projecting pieces are so regulated by the pins or recesses that the
projecting pieces strike against the ends of such needles as control that
portion of the warp thread which is required to be lifted in order to form
the pattern desired.
"
"
It will be at once understood that according to our Invention when a
change of pattern is made all that is necessary to be done is simply to
rearrange and adjust the lengths of the pins or recesses in the "lag."
The vertical sliding bars or fingers are carried by a frame in front of the
"face plate," and this frame also carries a roller or barrel over which the
chain of "lags" is passed, and by which the "lags" are caused to be
presented one by one to the vertical sliding bars or fingers as required.
In cases where each vertical row of needles in the "face plate"
corresponds to more than one dent of the reed, two or more rows of
vertical sliding bars or fingers will be required, in which case one or more
rows of the bars or fingers or projecting pieces will be slotted to permit
the other row or rows of projecting pieces or vertical bars or fingers to
pass therethrough, or the projections may be bent or other provision will
be made to bring the projecting pieces of the rows of vertical bars or
fingers in the same vertical line with each other.
The vertical sliding bars or fingers or the barrel over which the
lags" pass will be acted upon at the times required to take the vertical
bars or fingers out of the way of the chain of "lags," and permit each
successive "lag" to be presented to them.
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