IMPROVEMENTS IN MECHANISM CONNECTED WITH LOOMS FOR WEAVING
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by James Fleming Brown at the Office
of the Commissioners of Patents on the 29th November 1882.
JAMES FLEMING BROWN, of Glasgow, in the County of Lanark North Britain,
Manufacturer, " IMPROVEMENTS IN MECHANISM CONNECTED WITH LOOMS FOR
WEAVING,"
This Invention which relates to improvements in mechanism connected with
Looms for weaving has reference to that class of looms wherein several shuttles,
which are regulated by metallic or other cards, are used; and my Invention has
for its object more especially to facilitate the throwing in and out of the shuttles
in the case of complicated patterns.
My improvements are applied to the cards and to the mechanism for receiving
the operations from the said cards and consist under the first head in forming upon
each of the cards several rows of holes in lieu of forming upon them one row
only as has been the practice hitherto, or two rows only as has been used for a
checking motion.
According to my improvements each of the rows forms part of a different series
giving a certain rotation in the order of the shuttles. The fingers or pointers
which are employed to regulate the shuttle boxes are according to my improve-
ments so mounted or pivoted that their pointing ends are enabled to be directed to
one row or other of the holes in the cards so as to select the holes of a particular
series.
The elevation or depression of the pointing ends of the said fingers for this
purpose is effected by a Jacquard actuating a wiper or cam attachment bearing
against the under side of the said fingers, or I may use an equivalent arrangement
consisting of a series of adjustable steps or supports which can be elevated to such
a position as would guide the fingers to the level of the particular row of holes in
the cards as required or I may use any other equivalent mechanism for raising or
lowering the said pointers or fingers.
In the previous part of this Provisional Specification I have stated that in
carrying out a part of my present improvements there are formed upon each of the
cards several rows of holes in place of one row and I here explain that when using
two or more such rows of holes it follows that the width of the card is considerably
•

page_text: increased and thereby the width of each side or face of the barrel, upon which th
chain of the card travels, is also increased.-Such increase in the width or depth
of the cards and sides or faces of the barrel is in certain looms wherein mechanism
for driving this pattern apparatus is much crowded together productive of some
inconvenience in the carrying into practice and to get rid of such inconvenience as
well as to avoid an excessive crowding together of the several parts of the pattern
mechanism I use under the second head of these Improvements a barrel and
cards the depth of whose sides or faces are sufficient to contain one row of holes
and with a number of holes in line thereby having a barrel of greater length and
corresponding to what would be the number of holes in a series of two, three, or
more superposed holes. I also use the needles or fingers of any required number
placed in one horizontal row of such length as will correspond with the elongated
barrel and behind these fingers I arrange hinged levers each of which is connected
by a lifting cord or harness thread to the Jacquard machine or "Dobbie." These
hinged levers are connected or attached to the fingers hereinbefore referred to
under the first head of these improvements and the arrangement is such that when
any of these are held up, the other fingers are operated in front thereof do not act
upon those hinged levers which are held up but the finger which is opposite the
hinged lever which is down, causes it to be operated upon. The Jacquard machine
or "Dobbie" selects the finger or fingers to be operated upon.