Improvements in or relating to Lags and Pegs of the Pattern Chains Employed in Looms for Weaving.
Year: 1895

page_text: Date of Application, 5th Oct., 1895
Complete Specification Left, 4th July, 1896-Accepted, th Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Lags and Pegs of the Pattern
Chains Employed in Looms for Weaving.
We, RICHARD LONGDEN HATTERSLEY, of North Brook Works, Keighley, in
the County of York, Machine Maker, and SIMEON JACKSON, of the same address,
Manager, do hereby declare the nature of this invention to be as follows:-
Hitherto the pattern chains employed in looms for weaving have usually been
formed of a number of wooden lags secured together to form a chain, each lag
being made with a number of holes equally distanced apart, wherein wooden pegs
have been inserted. The chain being mounted on a revolving barrel or cylinder,
the pegs operate upon the indicating levers of the dobby or box motion mechanisms,
as the case may be.
In chains thus formed, rapid wear and tear of the pegs takes place, and
frequently in dry weather the pegs shrink and drop out of the lags, thus causing
the weaving to be faulty.
The object of this invention is to provide a pattern chain to overcome the above
defects, and in order to effect this we employ metal pegs of peculiar formation,
which are fitted or secured to the lags in such a way that it is impossible under
any ordinary conditions for a peg to drop out.
In describing the method of carrying out our invention it will be necessary to
only describe the construction of a single lag and peg, as all the lags forming the
chain are alike, and all the pegs are constructed and secured in identically the
same way.
The
We make the upper or working end of the peg semicircular in form, the base
being flat with a length about equal to the width of the lag. The peg has a
projection at the underside of the base, and in form is very similar to a riding
stirrup with a short projection or pin at the under-side of the flat portion.
peg may be made of cast metal, or may be made out of a length of half-round or flat
iron bent to the shape before described, the two ends being brought together to
form the projection or pin at the underside.
The lag is formed of wood, with a V-shaped groove cut longitudinally and a
number of parallel cross grooves equally distanced apart at right angles to the
longitudinal groove, the latter being cut somewhat deeper than the former.
The number of cross grooves is regulated by the width of the lag, each cross
cut corresponding to the holes formed to receive the wooden pegs in the old style
of pattern chain. A hole is bored through the lag at the centre of each cross
groove, into which fits the projection or pin at the underside of the base of the
peg. The flat base of the peg rests in the cross groove and the peg is secured by
a bar, fitting into the longitudinal groove, which passes over the upper side of the
base of the peg by reason of the cross grooves being cut deeper, the extra depth
being about equal to the thickness of the base of the peg, so that the upper side
of the base of the peg is about level with the underside of the longitudinal groove.
A modification consists in forming the lags and pegs in such a manner that the
latter are secured without the employment of a bar. In this arrangement the peg
is made of thin steel. Being of thin material, the ends forming the projection at
the underside do not meet, as when the peg is made out of half-round iron. The
ends of the thin steel peg are, moreover, slightly curved outwards. The peg thus

page_text: formed has a certain amount of flexibility. The lag is formed with the cross
grooves and holes, but without a longitudinal groove at the top, as no bar is
required to hold the pegs secure. A groove is cut, however, at the underside,
greater in width than the diameter of the holes.
In fitting a peg, it is nipped so that the curved ends of the projection will pass
through the hole in the centre of the groove. The peg then springs to its original
shape and is prevented from dropping out by its curved ends.
Dated this 4th day of October 1895.
J. SIDNEY CRITCHLEY,
27 Kirkgate, Bradford, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or relating to Lags and Pegs of the Pattern
Chains Employed in Looms for Weaving.
We, RICHARD LONGDEN HATTERSLEY of North Brook Works, Keighley in
the County of York, Machine Maker and SIMEON JACKSON of the same address,
Manager 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 :-
Hitherto the pattern chains employed in looms for weaving have usually been
formed of a number of wooden lags secured together to form a chain, each lag
being made with a number of holes equally distanced apart, wherein wooden pegs
have been inserted, The chain being mounted on a revolving barrel or cylinder,
the pegs operate upon the indicating levers of the dobby or box motion mechanisms
as the case may be.
In chains thus formed, rapid wear and tear of the pegs takes place, and
frequently in dry weather the pegs shrink and drop out of the lags, thus causing
the weaving to be faulty.
The object of this invention is to provide a pattern chain to overcome the above
defects, and in order to effect this we employ metal pegs of peculiar formation
which are fitted or secured to the lags in such a way that it is impossible under
ordinary conditions, for a peg to drop out.
In describing the method of carrying out our invention it will be only necessary
to describe the construction of a single lag and peg, as all the lags forming the
chain are alike, and all the pegs are constructed and secured in identically the
same way.
We make the upper or working end of the peg semicircular in form, the base
being flat with a length about equal to the width of the lag. The peg has a
projection at the underside of the base, and in form is very similar to a riding
stirrup with a short projection or pin at the underside of the flat portion. This
peg may be made of cast metal or be made out of a length of half-round or flat
iron bent to the shape before described, the two ends being brought together to
form the projection or pin at the underside.
The lag is formed of wood, with a groove cut longitudinally and a number of
parallel cross grooves equally distanced apart at right angles to the longitudinal
groove the latter being cut somewhat deeper than the former.
The number of cross grooves is regulated by the length of the lag, each cross
cut corresponding to the holes formed to receive the wooden pegs in the old style
of pattern chain. A hole is bored into the lag at the centre of cach cross groove,
into which fits the projection or pin at the underside of the base of the peg. The
flat base of the peg rests in the cross groove, and the peg is secured by a bar
fitting into the longitudinal groove which passes over the upper side of the base of
the peg by reason of the cross grooves being cut deeper, the extra depth being

page_text: equal to the thickness of the base of the peg, so that the upper side of the base of
the peg is about level with the underside of the longitudinal groove.
In order to more fully explain our invention, we appen hereto sheet of drawings
marked with letters of reference; wherein Fig. 1 represents a longitudinal elevation
of a lag with pegs fitted and arranged according to this invention. Fig. 2 is an
end view of the same and Fig. 3 a cross section on line a-b in Fig. 1. Figs. 4, 5
and 6 are details of the pegs showing the construction of same when made out of
lengths of half-round or flat iron.
A denotes the lag, and B the pegs, made of cast steel in the form shown; or
they may be made out of lengths of iron or steel bent as shewn in Figs. 4, 5 and 6.
C is the longitudinal groove cut as shewn in Figs. 2 and 3, and into which the
bar D can be pushed in from either end. The cross grooves are cut deeper than
the longitudinal groove and at the centre of each cross groove a small hole is
bored; into these holes fits the pin-like projections at the underside of the bases of
pegs B. The cross grooves being cut deeper than the longitudinal groove, the
bar B when inserted securely holds the pegs to the lag.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
In looms for weaving, the arrangement and construction of lags and pegs
substantially as herein described.
Dated this 3rd day of July 1896
J. SIDNEY CRITCHLEY,
Agent.