CERTAIN IMPROVEMENTS IN MACHINERY FOR MAKING LACE, COMMONLY CALLED BOBBIN NET
Year: 1830

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
LEVERS, of New Radford, near the Town of Nottingham, Lace Machine
Maker, send greeting.
WHEREAS His late most Excellent Majesty King George the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Eighth day of June, One thousand eight hundred and thirty,
and in the eleventh year of His reign, did, for Himself, His heirs and successors,
give and grant unto me, the said John Levers, His special licence that I,
the said John Levers, my executors, administrators, and assigns, or such others
as I, the said John Levers, my executors, administrators, or assigns, should
at any time agree with, and no others, from time to time and at all times
during the term of years therein expressed, should and lawfully might make,
use, exercise, and vend, within England, Wales, and the Town of Berwick-
upon-Tweed, my Invention of "CERTAIN IMPROVEMENTS IN MACHINERY FOR
MAKING LACE, COMMONLY CALLED BOBBIN NET;" in which said Letters Patent
is contained a proviso, obliging me, the said John Levers, by an instru-
ment in writing under my hand and seal, particularly to describe and ascertain
the nature of my said Invention, and in what manner the same is to be per-
formed, and to cause the same to be enrolled in His Majesty's High Court
of Chancery within six calendar months next and immediately after the date
of the said in part recited Letters Patent, as in and by the same, reference
being thereunto had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
John Lever, do hereby declare that the nature of my said Invention, and the
manner in which the same is to be performed, are particularly described and
ascertained in and by the following description thereof (that is to say) :-
My Invention of improvements in machinery for manufacturing bobbin
net lace apply to that particular construction of machines which is called or
known by the name of the Levers' principle, and consists in a certain novel
arrangement of mechanism to be adapted to a Levers' machine, for the purpose
of actuating some of the operative parts of the machine (namely, the dividing
of the bobbin carriages and the taking up the half meshes,) by a rotary
motion, instead of the several movements heretofore performed by the hands and
fect of the lace maker. These improvements are represented in the Drawing
hereto annexed, which exhibits an end view of a Levers' machine, partly in
section, the standard or framework being removed to shew the operative parts
more clearly. a is the warp roller, from whence the threads pass through the
stay b, and guides c to the-work-roll d; the carriages and bobbins e, e, slide in
the combs f, f, and are divided by the pusher bars g, g. The point bars h, h,
are connected in the usual manner to the spindle bar i, i, the operations of
which for making lace in this principle of machinery are well known to lace
makers. The improvements which form the subject of my present Patent are
designed to affect the required movements of the pusher bars g, g, for dividing
the carriages, and the point bars h, h, for taking up the half meshes, rotary
motion being given to the actuating shaft k by means of a crank or winch. The
moving power is communicated through a train of wheels to the shaft l, but
which train of wheels I do not claim as part of my Invention. Upon this shaft
I mount two sets of cams m, m, and n, n, the cams m being designed to work
the taking-up bars, and the cams n the dividing bars. The levers or tail poles o, o,
attached to the spindle bars for working the taking-up bars in the ordinary
construction of a Levers' machine are in this improved construction elongated
for the purpose of being connected to the verticle rods p, p. The lower
extremities of these rods are attached to the vibrating levers q, q, which have
their fulcrums in the shaft r, supported in a saddle piece upon the lower rail
of the woodwork. The reverse end of each of these lovers carries a friction
roller, which is acted upon by the cane m as the shaft 2 revolves, and by that
means the necessary movement of the point bars are effected, that is, the
opposite surface of the cams m, acting against the ends of the levers q, q,
alternately raise and depress each lever and cause the point bars to take up
the half meshes. The cams n, n, mounted upon the shaft l, as before said,
act upon friction rollers at the extreniities of the other vibrating levers 5, s,

page_text: which also hang upon the fulcrum shaft r; the reverse ends of these levers are
connected by the shorter vertical rods t, t, to other levers u, u, mounted in
bearings v, v, on the top rail of the woodwork, and friction rollers are attached
to the opposite ends of these last-mentioned levers which act against the tail
pieces w, w, of the dividing bars. Thus by the rotary motion of the shaft / and
its cams me and n, the dividing of the carriages and the taking up of the meshes
is effected. The necessary movements of the other parts of the Levers'
machine may be obtained by any suitable arrangement of mechanism, to be
actuated by the first moving shaft k, through the agency of the train of wheels
shewn in the Drawing, or by any other contrivance calculated to effect the
same object. In conclusion, I wish it to be understood, that though I have
exhibited in the Drawing, and described several parts of a Levers' machine to
which my improvements are connected, I do not intend in the present instance
to claim any of the parts which have been heretofore known or in use, but
declare that my present improvements consist simply in the arrangement of
mechanism above described for effecting the dividing of the bobbin carriages
and the taking up of the mesh when formed by the intervention of the threads,
which contrivances I believe to be perfectly new, and never before employed or
adopted to a lace machine constructed upon the Levers' principle.
In witness whereof, I, the said John Levers, have hereunto set my
hand and seal, this Eighth day of December, in the year of our
Lord One thousand eight hundred and thirty
JOHN LEVERS. (L.S.)
AND BE IT REMEMBERED, that on the Eighth day of December, in
the first year of the reign of His Majesty King William the Fourth, the
the said John Levers came before our said Lord the King in His Chancery,
and acknowledged the instrument aforesaid, and all and every thing therein
contained and specified, in form above written. And also the instrument
aforesaid was stamped according to the tenor of the Statute made in the fifty-
fifth year of the reign of His late Majesty King George the Third.
Inrolled the Eighth day of December, in the year of our Lord One
thousand eight hundred and thirty.