IMPROVEMENTS IN OR CON-
Year: 1883

page_text: LETTERS PATENT to Joseph Chapman of the Town and County of the Town
of Nottingham, Machinist for an Invention of IMPROVEMENTS IN OR CON-
LETTERS PATENT to Joseph Chapman of the Town and County of the Town
of Nottingham, Machinist for an Invention of IMPROVEMENTS IN OR CON-
NECTED WITH JACQUARD APPARATUS
"
PROVISIONAL SPECIFICATION left by the said Joseph Chapman at the
Office of the Commissioners of Patents on the 24th March 1883.
JOSEPH CHAPMAN, of the Town and County of the Town of Nottingham,
"IMPROVEMENTS IN OR CONNECTED WITH JACQUARD APPARATUS,"
Machinist
This Invention relates principally to improvements in the construction of what
are termed the "cylinders "of jacquard apparatus as used in lace and other machines,
and it has for its object the construction of such "cylinders" in a more economical,
convenient and generally more satisfactory manner than hitherto practised.
Hitherto the cylinders" of jacquard apparatus have been principally made of
brass, the plates of which having to be drilled with a series of holes extending
their whole length in rows, causes such ",
'cylinders" to be necessarily very costly
and in some cases inconvenient. By the present Invention the construction of
'cylinders" is much simplified and the cost of production greatly lessened.
In carrying out the Invention there are placed near each end of an axis or
spindle a pair of square or other shaped plates, the inner plate of each pair bearing
against a shoulder or collar upon the central spindle and the outer plates are upon
tubular bosses which are capable of sliding along the spindle which passes through
the centres of the plates. The plates have suitable grooves in their edges and
suitable metal wires or rods are placed in these grooves, the wires or rods being
fixed either to the inner or outer plates. When necessary or requisite additional
guide or strengthening plates may be fixed on the axis or spindle at suitable
distances apart. The distance between each of the grooves and the wires in them
is equal to the diameter of the holes punched in the pattern cards used in the
machine. The wires or rods are kept at a proper tension and perfectly true by
means of screws passing through the outer plates at each end of the axis or
spindle.
It is obvious that the dropper sleys of jacquard apparatus may be constructed
on the same principle as above indicated.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Joseph Chapman in. the Great Seal Patent Office on the
24th September 1883.
JOSEPH CHAPMAN, of the Town and County of the Town of Nottingham,
Machinist, IMPROVEMENTS IN OR CONNECTED WITH JACQUARD APPARATUS.'
48
.
"
My said Invention relates to improvements in the construction of what are
termed the "cylinders" of jacquard apparatus as used in lace and other machines
and it has for its object the construction of such "cylinders" in a more economical,
convenient and generally more satisfactory manner than hitherto practised.
"
Hitherto the cylinders" or barrels of jacquard apparatus have been principally
made of brass the plates of which having to be drilled with a series of holes
extending their whole lengths in rows, causes such "cylinders" or barrels to be
'necessarily very costly, weak and in some cases inconvenient. By my present
-Invention the construction of "cylinders' or barrels is much simplified and the
cost of production greatly lessened.
In carrying out my said Invention there are placed near each end of an axis or
spindle a pair of square or other shaped plates, the inner plate of each pair bearing
against a shoulder or collar upon the central spindle and the outer plates are upon
tubular bosses which are capable of sliding along the spindle which passes through
the centre of the plates. These plates have suitable grooves in their edges and
suitable metal wires or rods are placed in these grooves the wires or rods being
fixed either to the inner or outer plates. When necessary or requisite additional
guide or strengthening plates may be fixed on the axis or spindle at suitable
distances apart. The distance between each of the grooves and the wires in them
is equal to the diameter of the holes punched in the pattern cards used in the
machine. The wires or rods are kept at a proper tension and perfectly true by
means of screws passing through the outer plates at each end of the axis or
spindle.
It is obvious that the dropper sleys of jacquard apparatus may be constructed on
the same principle as above indicated.
And in order that my said Invention and the manner of performing the same
may be properly understood I hereunto append a sheet of explanatory drawings to
be hereinafter referred to and representing a modification of my improved apparatus.
In these drawings the same reference numerals are used to mark the same like
parts wherever they are repeated.
"
Figure 1 on the accompanying sheet of drawings, is a plan, reduced to half size,
and Figure 2 is an end view wbilst Figure 4 is a cross section taken near the
middle of one modification of my improved "cylinder" or barrel. Figure 3 is a
sectional plan of a part of the "cylinder" or barrel and will be hereinafter referred
to. Figures 23 and 4 are full size drawings. The improved "cylinder
or barrel
(hereinafter termed a barrel) shown in the drawings is for the jacquard apparatus
of a lace curtain machine and is square in cross section. but my said Invention is
applicable to barrels of hexagonal or other section. In my improved barrel shown
in the drawings there is a steel axis or central spindle, 1, upon each end of which
there is keyed or fixed a castiron flanged square plate, 2. These plates 2, are each
formed with holes to receive four square-headed screws, 3, which pass through into
boles tapped in steel plates, 4. These plates, 4, are fitted on the spindle one near
each end so as to be capable of sliding along the spindle and have a longitudinal
groove, 5, on each of the four edges of each plate as well as thirteen transverse
cuts, 6. The transverse cuts, 6, are at such distances apart as to be equal to the
diameter of the holes in the pattern card and have the ends of flat steel wires 7
inserted into them the ends being turned and held in the longitudinal grooves, 5, as

page_text: will be best seen on reference to Figure 3. The wires, 7, extend longitudinally
from the plate, 4, at one end to the plate, 4, at the other, and are held or guided in
position by passing through corresponding transverse cuts, 6, in the edges of two
strengthening brass plates, 8, which are keyed or fixed equidistantly between the
plates, 4, on the axis, 1. These wires, 7, are tightened and trued or straightened
by turning the screws, 3, which draw the plates, 4, towards the fixed end plates, 2.
The four plates, 4, 4, 8, 8, have rectangular recesses or rebates at their corners to
receive four steel bars, 9, of square section, which are soldered to the end plates, 2, 2,
and when the wires have been extended as just described, the plates, 4, 4, 8, 8, are
also soldered to the four steel bars, 9, the whole thus forming,a strong and firm
rectangular barrel. Small brass plates, 10, having conical guide pins for guiding
the jacquard pattern card are fitted into grooves or recesses formed for them in the
middle of each of the four edges of the flanged end plates, 2. The plates, 10, are
slotted to admit of adjustment and are fixed into position by a screw passing
through the slot of each plate. When constructing barrels for the jacquard
apparatus of machines requiring greater length of barrel than those used for
curtain machines, additional intermediate strengthening plates, 8, are employed,
one of which in the middle of the barrel, is made of greater thickness than the
others, so that slotted plates, 10, having conical guide pins, may be fitted to it.
In constructing dropper sleys for lace and other machines, I form a firm quadri-
lateral frame of about the required size and fit inside the frame at each end a
movable bar slotted and cut like the plate, 4, herein before described. These bars
are each tapped to receive the ends of screws which are passed through the end
pieces of the frame, and by these screws the bars having the ends of flat wires in
them are drawn towards the end pieces of the frame, straightening the wires,
which may pass through one or more guide bars, transversely cut to receive them
(like the plates, 8,) as circumstances require. The intermediate guide bars are
soldered or fixed to the frame and when the wires are properly stretched by the
screwing action the movable bars are also soldered to the frame.
Having thus particularly described my said Invention and the manner of
performing the same I have to state that I do not restrict myself to the precise
details herein described or delineated but that what I believe to be novel and
original and claim as the Invention secured to me by and in terms of the
hereinbefore in part recited Letters Patent is :-
Firstly The improved method of forming "cylinders" or barrels for jacquard
apparatus by longitudinally placing wires or rods, on rectangular or other shaped
plates carried on an axis or central spindle or otherwise substantially as herein-
before described with reference to the accompanying drawings.
"
Secondly-The combination and arrangement of parts forming a cylinder" or
barrel for jacquard apparatus substantially as hereinbefore described with reference
to the accompanying drawings.
Thirdly The improved method of constructing the dropper sleys of lace and
other machines substantially as herein before described.
In witness whereof I the said Joseph Chapman have, hereunto set my hand
and seal this eighteenth day of September in the year of our Lord One thousand
eight hundred and eighty three.
Witness
LOCK MOORE
Patent Agent
Nottingham
JOSEPH CHAPMAN (L.S.)