Improvements in Dobbies Used in Looms for Weaving."
Year: 1887

page_text: Date of Application, 10th Jan., 1887.
Complete Left, 10th May, 1887.
Complete Accepted, 10th June, 1887.
Improvements in Dobbies Used in Looms for Weaving."
We WALTER HOYLE and GEORGE BURBERY both of Primrose Vale Mill Congleton
in the County of Chester Manufacturers do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to simplify the construction of the dobbies used in
looms for weaving and to enable the same to be worked by means of paper cards
similar to those used for the Jacquard machines.
For this purpose we employ a hollow cylinder (as it is called) preferably of an
octagonal shape, and we mount this cylinder so that it can revolve, but it has no
reciprocating motion given to it as heretofore. This cylinder is caused to make one
eighth of a revolution at a time by means of a peg wheel and pinion or other
equivalent device.
Above this cylinder is mounted in vertical slides a frame carrying a number of
cranked pegs or catches capable of rising and falling therein and provided (by
preference) with light springs pressing them downwards.
The frame has a rising and falling motion imparted to it from any convenient part
of the loom, and the back rail which carries the pegs is also capable of a to and fro
motion; the feet of the cranked pegs or catches rest upon the face of the paper cards
which pass over the cylinder.
The central portion of the pegs or catches is solid and comes opposite to the needles
which act upon the hooks of the dobby in the usual manner; and when the pegs are in
their lowest position (not being raised by the cards) the horizontal movement of the
back rail of the frame pushes forward all those needles whose corresponding pegs or
catches have not been raised.
But when any of the pegs have been raised by coming opposite to blank portions of
the paper cards on the cylinder, those pegs are raised, and the solid or cranked portion
of these pegs or catches comes above the ends of their respective needles and the
forward motion of these pegs or catches consequently does not communicate any
movement to their needles and hooks.

page_text: The forward motion of the pegrail is produced at the required interval by means of
a bell crank lever actuated by a tappet or finger and its return movement when
released is effected by means of two springs.
There are slots in the faces of the cylinder to allow of the falling of the pegs when
holes in the paper cards are presented beneath the lower ends of the same, and these
slots are of a sufficient width to allow of the forward movement of the pegs therein,
when acting on the needles.
By our improved arrangement it will be evident that paper cards may be used to
work the dobby instead of the metal plates or lags usually employed for that purpose
as there is no pressure thereupon excepting what is due to the simple weight of the
pegs or catches.
n
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicants.

page_text: We WALTER HOYLE and GEORGE BURBERY both of Primrose Vale Mill, Congleton
in the County of Chester Manufacturers 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 simplify the construction of dobbies used in looms
for weaving and to enable the same to be worked by means of paper cards similar to
those used for the Jacquard machines.
The nature of our said invention and the manner in which the same is to be per-
formed or carried into practical effect will be readily understood on reference to the
annexed sheet of drawings and the following explanation thereof.
Fig. 1 on the drawings is a vertical section and Fig. 2 an end elevation of a dobby
constructed according to our invention and Figs. 3 and 4 are detached views herein-
after more particularly referred to.
a, a is the main frame of the dobby, b, b the lifting frame, c, e the knives or "griff"
d, d the hooks, and e, e the needles.
We employ a hollow cylinder (as it is called), preferably of an octagonal shape
as shown at Fig. 1 and we mount this cylinder so that it can revolve, but it has no
reciprocating motion given to it as heretofore. This cylinder f, is caused to make
one eighth of a revolution at a time by means of a peg-wheel g, g, and a pin or pins h,
the latter being fixed in a face plate i, i keyed upon a cross shaft k, k to which the
requisite motion is to be communicated from any convenient part of the loom by
means of a bevil wheel keyed upon its other end or this intermittent motion may be
given to the cylinder by any other equivalent device.
Above the cylinder ffis mounted in vertical slides 1, la frame m, m (see also the
enlarged detached view Fig. 4) carrying a number of cranked pegs or catches n, n
capable of rising and falling therein and provided (by preference) with light springs o, o
pressing them downwards. The frame m, m has a rising and falling motion imparted
to it by means of a slotted bar p, p (see Fig. 2.) attached to the "griff" c, c, or this
motion may be imparted direct from any convenient part of the loom, and the back
rail m which carries the cranked pegs or catches n, u is also capable of a horizontal
to and fro motion. The lower ends of the cranked pegs or catches n, n rest upon the
face of the paper cards which pass over the cylinder, f.
The central portion of the pegs or catches n, n is solid and comes opposite to the
heads of the needles e which act upon the hooks d, d of the dobby in the usual
manner and when the pegs are in their lowest position see Fig. 1 (not being raised
by the cards) the horizontal movement of the back rail m' of the frame m pushes
forward all those needles e, e whose corresponding catches n, n have not been raised.
But when any of the pegs n, n have been raised by coming opposite to blank
portions of the paper cards q, 7 on the cylinder, those pegs remain up and the solid
or cranked portion thereof comes above the heads of their respective needles e e (see

page_text: Fig. 2) and the forward motion of these pegs or catches consequently does not com-
municate any movement to their needles e, é and hooks d, d.
The forward motion of the peg rail m³, is produced, at the required interval by means
of a bell crank lever r, actuated by a tappet or tappets or bowl or bowls s, s attached to
the shaft k, k and its return movement when released is effected by means of two
springs one of which t, t is shown at Fig. 4.
There are slots in the cards 7, 9 (see Fig. 3) and in the faces of the cylinder ff to
allow of the falling of the pegs n, n when the holes in the paper cards are presented
beneath the lower ends of the same and these slots are of a sufficient width to allow of
the forward motion of the pegs n, n therein when acting on the needles e, e.
It will be evident that by the use of our improved arrangement paper cards may be
used to work the dobby instead of the metal plates or lags usually employed for that
purpose as there is no pressure thereupon excepting what is due to the simple weight
of the pegs or catches », n.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed we declare that what we claim is :-
First. The improvements in dobbies used in looms for weaving substantially as
hereinbefore described, and illustrated by the drawings annexed, and
Secondly. We claim the combination of the intermittent revolving cylinder (not
reciprocating) the vertically sliding frame with its horizontally moving rail, carrying
the cranked pegs or catches acted by the holes or spaces in the cards substantially
as described, whereby we are enabled to dispense with the metal pattern plates or lags
usually employed and to substitute paper cards for working the needles and hooks of
dobbies used in looms for weaving.
Dated this 9th day of May 1887.