An Improved Construction of the Lags and Pegs of Dobby or Shedding Motion Apparatus Employed in Looms for Weaving and Machinery or Apparatus for Making the same.
Year: 1887

page_text: Date of Application, 25th Feb.. 1887
Complete Left, 25th Nov., 1887
Complete Accepted, 27th Dec., 1887
An Improved Construction of the Lags and Pegs of Dobby or
Shedding Motion Apparatus Employed in Looms for Weaving
and Machinery or Apparatus for Making the same.
1 THOMAS STONE, Mechanical Engineer, and JAMES BURNETT, Lattice and Peg
Manufacturer, both of 9 Bow Lane, Preston, in the County of Lancaster, do hereby
declare the nature of this invention to be as follows:-
This invention relates to an improved construction of the lags and pegs of dobby or
shedding motion apparatus employed in looms for weaving, and to machinery or
apparatus for making the same. As ordinarily constructed such lags or pegs are
made in separate parts, the pegs being driven tightly into holes. or perforations in
various positions in the lags as the pattern to be woven in the cloth requires. In
practice the pegs are apt to dry in or to be otherwise loosened and sometimes to fall
out of their places in the lag and so cause the pattern to "miss," the consequence
being (especially in the case of the finer cloths, such as fine velveteens) the piece of
cloth being woven is spoiled for market purposes except at great loss. Now by our
invention we make each lag and its peg or pegs in one solid piece. Thus the danger
of loose pegs dropping out of place is entirely obviated, and the pattern, that is to
say the required order of the pegs on the successive lags of the set or lattice, may be
received by lattice maker on paper, and he can then cut out the required spaces so as
to leave on each side projections answering as the pegs and thus produce a lattice
of a permanent, strong, and reliable character in which the pegs cannot become
disarranged.
We slope down the edges of the strip or blank out of which the combined lag and
pegs is to be shaped so as to produce the desired cross-sectional form, and fasten the
strip on the edge of an upper horizontal slide or table capable of being moved to and
from the face of a revolving horizontally mounted cutter which is preferably of the
same width as the space occupied by one peg on the lattice to be produced. The
horizontal slide or table rests on a lower slide, the two slides being so mounted as to
be capable of being moved in directions at right angles to each other, that is to say,

page_text: the upper slide moves to and from the face of the revolving cutter and the lower slide
sidewise in a line with the axis of the cutter shaft or spindle.
The lower slide carries a notched bar or index plate the distances of the notches
apart corresponding with the width of the peg spaces on the lattice. A spring catch
or finger fixed to the front stationary part of the apparatus fits into the notches so as
to hold the lower slide firmly in position, and according to the particular notch in
which the finger is inserted for the time being so will a space or opening in a
corresponding position be cut out of the face of the strip or blank when the upper
slide or table is pushed up against the revolving cutter. Thus if a number of
openings are to be cut out between two projections or pegs, the spring catch or
finger is inserted in the notch corresponding with the first of the spaces to be opened
out and then into the next notch and so on until the entire number of spaces have
been made. A suitable adjustable stop or stops may be provided for determining the
depth of the cut to be made by the revolving cutter which we prefer should consist
of a number of thin circular saws placed side by side. We also prefer to mount the
upper and lower or compound slides forming the table part of the apparatus so as to
be capable of a vertical movement so that when the cutter has reached the bottom of
its cut a slight up and down movement of the lag in front of the cutter may cause the
hollow or concavity left by the circular cutter on the face of the lag between the
projecting parts or pegs to be removed and a level face substituted.
Dated this 25th day of February 1887
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields,
Agent for the Applicants.

page_text: An Improved Construction of the Lags and Pegs of Dobby or
Shedding Motion Apparatus Employed in Looms for Weaving
and Machinery or Apparatus for Making the same.
We, THOMAS STONE, Mechanical Engineer and JAMES BURNETT, Lattice and Peg
Manufacturer, both of 9 Bow Lane, Preston in the County of Lancaster, 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 :-
This invention relates to an improved construction of the lags and pegs of dobby or
shedding motion apparatus employed in looms for weaving, and to machinery or
apparatus for making the same. As ordinarily constructed such lags or pegs are
made in separate parts, the pegs being driven tightly into holes or perforations in
various positions in the lags as the pattern to be woven in the cloth requires. In
practice the pegs are apt to dry in or to be otherwise loosened and sometimes to fall
out of their places in the lag and so cause the pattern to "miss," the consequence
being (especially in the case of the finer cloths, such as fine velveteens) the piece of
cloth being woven is spoiled for market purposes except at great loss. Now by our
invention we make each lag and its peg or pegs in one solid piece. Thus the danger
of loose pegs dropping out of place is entirely obviated, and the pattern, that is to say
the required order of the pegs on the successive lags of the set or lattice, may be
received by the lattice maker on paper, and he can then cut out the required spaces
so as to leave on each side projections answering as the pegs and thus produce a
lattice of a permanent, strong, and reliable character in which the pegs cannot
become disarranged.
In the accompanying Drawings
Fig. 1 shows the cross-sectional form of the blank from which our improved
combined lag and pegs is to be produced.
Fig. 2 is a plan view.
Fig. 3 a side elevation; and.
Fig. 4 an end elevation of machinery or apparatus for cutting out the required
spaces or openings therein as hereinabove mentioned.
We slope down the edges of the strip or blank out of which the combined lag and
pegs is to be shaped so as to produce the desired cross-sectional form (as shewn in
Fig. 1) and fasten the blank or strip a in the jaws bb placed on the edge of an upper
horizontal slide or table c capable of being moved to and from the face of a revolving
horizontally mounted cutter d which is preferably of the same width as the space
occupied by one peg on the lattice to be produced. The horizontal slide or table c
rests on a lower horizontal slide e, the two slides c and e being so mounted as to be
capable of being moved in directions at right angles to each other, that is to
say, the
upper slide c moves to and from the face of the revolving cutter d and the lower
slide e sidewise in a line parallel with the axis of the cutter shaft or spindle f.

page_text: The lower slide e carries a notched bar or index plate g the distance of the notches
apart corresponding with the width of the cutter d and of the peg spaces on the
lattice. A spring catch or detent (having a finger n which is pressed downwardly
upon the spring o when the catch or detent is to be withdrawn from the notched
bar g) mounted on the front stationary part of the apparatus i fits into the notches in
the index plate g so as to hold the lower slide e firmly in a given position, and
according to the particular notch in which the catch or detent his inserted for the
time being so will a space or opening (see divisions in dotted lines in the strip or
blank a Fig. 2) in a corresponding position be cut out of the face of the strip or
blank when the upper slide or table is pushed up the required distance in the
direction of the revolving cutter d. Thus if a number of openings are to be cut out
between two projections or pegs. the spring catch or detent his inserted in the notch
corresponding with the first of the spaces to be opened out and then into the next
notch and so on until the entire number of spaces have been cut out. A suitable
adjustable stop or stops may be provided for determining the depth of the cut to be
made by the revolving cutter which we prefer should consist of a number of thin
circular saws placed side by side. j is a stop against which the strip or blank is set
so as to determine its lateral position when placed within the jaws bb. k is a weight
hanging from a cord or chain for the purpose of holding the slide e hard up to the
catch or detent h. m is an arrangement of lever and clip apparatus for pulling and
holding the strip or blank a lightly within the jaws b b.
Having now particularly described and ascertained the nature of the said invention,
and in what manner it is to be performed, we declare that what we claim is :-
:-
1. In dobby or shedding motion apparatus of looms for weaving the use of
combined wood lags and pegs in one solid piece substantially as described for the
purpose specified.
2. The use or employment of machinery or apparatus constructed, arranged, and
operating substantially as described with reference to and shewn at Figs. 2. 3 and 4
of the drawings for the purpose specified.
Dated this 5th day of November 1987