IMPROVEMENTS IN THE MANUFACTURE OF SCOTCH BONNETS AND IN THE MECHANISM EMPLOYED THEREFOR
Year: 1884

page_text: PROTRIONAL
DIEVLICATION.
We, ALEXANDER GOOLD, of Hawick, in the County of Roxburgh, North Britain,
Frame Smith, and WILLIAM WYLIE of Stewarton in the County of Ayr, North
Britain, Scotch Bonnet Manufacturer do hereby declare the nature of the said
invention for "IMPROVEMENTS IN THE MANUFACTURE OF SCOTCH BONNETS AND
IN THE MECHANISM EMPLOYED THEREFOR" to be as follows:-
This Invention which relates to Improvements in the manufacture of Scotch
Bonnets and in the mechanism employed therefor has for its object to facilitate the
manufacture of such bonnets and consists in forming the said bonnets radially, that
is to say, by these improvements they are constructed in lines radiating from the
selvedge to the centre of the said bonnets so that a machine hitherto used for
forming one bonnet, with these improvements applied thereto is rendered capable of
forming one, two, three or more bonnets at one and the same time.
In carrying this Invention into practice the series of needles of the machine is
divided into any number of sets corresponding to the number of bonnets to be
worked at one time on the machine, and upon brackets fixed to the framing of the
machine, there is arranged a cam which is shaped with a series of projections and
which is hereinafter referred to as the "leaf-cam."-Upon the shaft to which this
cam is fitted is also mounted a ratchet wheel rotating with the said can.-To
prevent the leaf-cam and with it the ratchet wheel from running back after the said
cam and wheel have been turned into position there is provided a spring engaging
with the teeth of the ratchet wheel and secured at its opposite end to the guides in
which the "swing thread carriers" work.-The leaf-cam is operated by means of a
pivoted pawl connected to the arm which operates the presser foot or plate of the
machine, this pawl engaging, at each successive stroke of the machine, with
consecutive teeth of the ratchet wheel.-This rotation of the leaf-cam has the effect
of presenting a different projection of the said cam to the end of an arm sliding in
the guides in which the series of swing thread carriers work and thereby regulates
the extent of travel of the said swing thread carriers which come against the end
of the said arm according as the position of the gussets formed in the top of Scotch

page_text: Bonnets are required to be worked.-The presser foot or plate is connected with the
arm operated by the can, by means of a pin projecting downwards into a piece
slotted at right angles to the motion of the said arm and secured to the sliding
presser foot or plate.
The end of the arm bearing upon the edge of the leaf-cam is provided with
an anti-friction roller and the said arm is flexibly held in position against the
leaf-cam by means of a spring carried by a bracket fixed to the framing of the
machine.

page_text: We, ALEXANDER GOOLD, of Hawick, in the County of Roxburgh, North Britain,
Frame Smith, and WILLIAM WYLIE, of Stewarton, in the County of Ayr, North
Britain, Scotch Bonnet Manufacturer do hereby declare the nature of our said
invention for IMPROVEMENTS IN. THE MANUFACTURE OF SCOTCH BONNETS AND
IN THE MECHANISM EMPLOYED THEREFOR and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
Our Invention, which relates to Improvements in the Manufacture, of Scotch
Bonnets and in the mechanism employed therefor, has for its object to facilitate the
manufacture of such Bonnets in that mode of manufacturing the same whereunder
they are formed radially, that is to say, when they are constructed in lines
extending from the selvedge to the centre of the said Bonnets.
In carrying our Invention into practice, we divide the series of needles of the
machine into any number of sets corresponding to the number of bonnets to be
worked at one time on the Machine, and upon brackets fixed to the framing of the
Machine we provide a cam which is shaped with a series of projections and which
is hereinafter referred to as the "leaf-cam."-Upon the shaft to which this cam is
fitted, is also mounted a ratchet wheel rotating with the said cam-To prevent the
leaf-cam, and with it the ratchet wheel, from running back after the said cam and
wheel have been turned into position, we provide a spring engaging with the teeth
of the ratchet wheel and secured at its opposite end to the guides in which the
"swing thread carriers" work. The leaf-cam is operated by means of a pivoted
pawl connected to the arm which operates the presser foot or plate of the Machine,
this pawl engaging at each successive stroke of the Machine with consecutive teeth
of the ratchet wheel.-This rotation of the leaf-cam has the effect of presenting a
different projection of the said cam to the end of an arm sliding in or upon the
guides in or upon which the series of swing thread carriers work, and thereby
regulates the extent of travel of the said swing thread carriers, which come against
the end of the said arm according as the position of the gussets formed in the top
of "Scotch Bonnets" are required to be worked.-The presser foot or plate is
connected with the arm operated by the cam, by means of a pin projecting
downwards into a piece slotted at right angles to the motion of the said arm, and
secured to the sliding presser foot or plate; or the reverse of this may be employed,
that is to say, the slotted piece secured to the arm and the projecting pin to the
presser foot or plate.
The end of the arm bearing upon the edge of the leaf-cam is provided with an
anti-friction roller and the said arm is flexibly held in position against the leaf-cam
by means of a spring carried by a bracket fixed to the framing of the Machine.
In order that our said Invention may be most fully understood and readily
carried into effect, we will proceed to describe the Drawings hereunto annexed.
Figure 1 represents in front elevation a portion of a "stocking frame" fitted with
mechanism constructed according to and constituting our present Invention.
Figure 2 represents in end elevation a detached portion of the same.
In carrying our present Invention into practice, the series of needles a, of
the machine is divided into any number of sets corresponding to the number,
of bonneta to be worked at one time upon the Machine, three of such sets
being shewn upon the annexed Drawings and marked a, a', and a³, respec-
tively. The sinkers b, 62, and b³, are divided into sets corresponding to the

page_text: said needles, so that upon each such set of needles and sinkers, so constituted,
one bonnet is worked. At the end of the Machine and carried in brackets,
we arrange the cam c, which is shaped with a series of projections d, this
cam c, is hereinafter referred to as the "leaf-cam."-Upon the shaft e, to which
the leaf-cam c, is secured, there is also carried the ratchet wheel f.-The spring
catch g, is so arranged as to engage with the teeth of the ratchet wheel
and thereby prevent rotation in one direction, whilst it allows the said ratchet
wheel to run freely in an opposite direction.-This spring catch g, is secured at its
opposite end to the bracket h, which forms part of the bracket carrying the
shaft e.—This lastmentioned bracket is secured to the guides or guide bar i, in or
upon which the "swing thread carriers" j, work.-The leaf-cam c, is operated by
means of the jointed pawl k, pivoted to one of the arms 1, (shewn more particularly
at Figure 2.) which operate the presser bar m, and which are hinged at each end of
the framing of the machine as shewn at n.-The radial motion imparted to the
arm l, causes the leaf-cam c, to be rotated by reason of the centres upon which the
bar i, and the arm l, are pivoted, being fixed points, so that the arm 1, on
approaching the vertical, causes the pawl k, to be extended upwards and thereby
to engage with a fresh tooth of the ratchet wheel f, each time such motion is
imparted. Upon the guide bar i, there is provided the sliding plate o, which is
held in position by means of the two nuts p, the studs q, of which pass through
the slots r, and thereby allow of the plate o, receiving horizontal motion-At the
end of the plate o, adjacent to the cam c, the arm 8, is formed with a recess at its
outer end in which the rotating anti-friction roller t, is carried. At the upper part
of the sliding plate o, the projection u, carries a pin w, to which one end of the
spiral spring, or its equivalent is attached, its other end being connected
to any fixed bracket or other analogous part of the machine. To the inner
end of the plate o, and at its upper part is secured the catch y, while at the lower
part thereof the slotted bracket 2, is secured.-The catch y, is so arranged that, at
the end of the stroke of the swing thread carriers j, the spring shall impinge upon
and pass over the said catch, and offer sufficient resistance to maintain the swing
thread carries j, in the position so arrived at, until such time as they are required
to make their return stroke, when the power applied overcomes the resistance
offered by the catch y, and spring a¹, and leaves the said carriers j, free to complete
their return stroke. The spring a¹, is secured to the bar b¹, supporting the
carriers j, the said carriers j, being secured thereto by bolts or other equivalent
means. The slotted bracket z, engages with the pin c¹, which is secured to the
presser plate d¹, and by this means is free to transmit horizontal motion to the said
plate. This presser plate d¹, is free to slide horizontally by reason of its slotted
connection e, with the presser bar m, and the radial motion of the said plate is
similarly provided for by the slotted bracket z.-In place of the said bracket 2,
being secured to the sliding plate o, and the pin c¹, to the presser plate, we may
arrange the pin c¹, to be secured to the plate o, and projecting downwards into
the slotted bracket z, secured to the presser plate d¹.
It is obvious that the range of travel of the thread carriers ;, is dependent upon
the position of the sliding plate o, and this being drawn against the projections d,
of the leaf-cam c, in the manner herein before described, that such position is varied
to the extent of the distance from one needle to another as each consecutive pro-
jection is presented to the said sliding plate o, so that at each stroke of the machine
one needle is cut out from operating until the end of the gusset is reached, when
the return of the cam c, into its normal position causes the needles a, again to be
brought into operation one by one, the portion of the presser plate or foot d¹,
bearing upon the work also being shifted in unison with the number of needles in
operation.
At each successive stroke of the Machine, the pawl k, engages with consecutive
teeth of the ratchet wheel f, and thereby rotates the cam c, sufficiently to present

page_text: Having now described and particularly ascertained the nature of our Invention,
and in what manner the same is to be performed, we declare that what we
claim is:-
In mechanism for the manufacture of Scotch bonnets, the means for auto-
matically forming the gussets therein, consisting of the leaf cam c, with its
projections d, shaft e, ratchet wheel f, spring catch g, jointed pawl k, sliding
plate o, with its arm 8, anti-friction roller t, and projection u, and the spring,
and their attachments all substantially as and for the purposes hereinbefore set
forth with reference to the annexed sheet of drawings or the mechanical equivalents
of all or any of the said parts.
J. H. JOHNSON, DAY & JOHNSON,
Applicants' Agents.