CERTAIN IMPROVEMENTS IN MACHINES OR MACHINERY USED IN THE MANUFACTURE OF BOBBIN NET
Year: 1833

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HEATHCOAT, of Tiverton, in the County of Devon, Lace Manufacturer, send
greeting.
WHEREAS His most Excellent Majesty King William the Fourth, by His
Letters Patent under the Great Seal of the United Kingdom of Great Britain
and Ireland, bearing date the Fourteenth day of September, in the year of our
Lord One thousand eight hundred and thirty-three, in the fourth year of His
reign, did, for Himself, His heirs and successors, give and grant unto me, the said
John Heathcoat, my executors, administrators, and assigns, His especial
licence, full power, sole privilege and authority, that I, the said John Heath-
coat, my executors, administrators, and assigns, by myself and themselves, or by
my and their deputy or deputies, servants or agents, or such others as I, the said
John Heathcoat, my executors, administrators, or assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term of fourteen years therein expressed, should and lawfully
might make, use, exercise, and vend, within that part of His Majesty's United
Kingdom of Great Britain and Ireland called England, His Dominion of Wales,
and Town of Berwick-upon-Tweed, and also in all His Majesty's Colonies
and Plantations abroad, my Invention, of which I am possessed, of "CERTAIN
IMPROVEMENTS IN MACHINES OR MACHINERY USED IN THE MANUFACTURE OF
BOBBIN NET," in such manner as to me, my executors, administrators, or
assigns, should seem meet; in which said Letters Patent there is contained
a proviso obliging me, the said John Heathcoat, by an instrument in writing

page_text: under my hand and seal, particularly to describe and ascertain the nature of
the said Invention, and in what manner the same is to be performed, and cause
to be inrolled in His Majesty's High Court of Chancery within six calendar
months next and immediately after the date of the said recited Letters
Patent, as in and by the same, reference being thereunto had, will more fully
and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
John Heathcoat, do hereby declare that the nature of the said Invention, and
the manner in which the same is to be performed, are particularly described
and ascertained in and by the Drawings hereunto annexed, and the following
description thereof (that is to say) :-
My Invention consists of a new method of inserting the lacing or sewing
threads which hold together breadths of bobbin net whilst making, and during
the subsequent processes of finishing, and also of inserting threads in or upon
lace or bobbin net. My new method of lacing will be best understood by
referring to the annexed Drawing.
Fig. 1 represents on an enlarged scale two pieces of net laced together.
It will be seen that the lacing thread passes in front of the warp thread and
behind the two bobbin threads, and then repasses in front of the warp thread,
to act in a similar manner on the adjoining breadth. By this arrangement
the edges of the several breadths or pieces of lace or net are connected toge-
ther by the lacing thread taking hold of both the bobbin threads composing
the top of each mesh.
Fig. 2 of the annexed Drawing represents a vertical section of the principal
operating parts of a bobbin net machine, in order to shew the relative positions
of the parts C and D, which are those more immediately composing the: арра-
ratus for effecting the supply and insertion of the lacing threads already
described. a represents the warp roller; b, h, the guide bars and guides;
c, c, the circles or bolts; d, d, the points; e the lace roller; f. f, the lockers;
and g, g, the drivers. Upon the roller A are wound the selvidge threads for
the breadths, one half of which threads are conducted by guides fixed to the
ordinary guide bar h, and the others by those of the bar b, which bar is supported
by the other bar h, and generally slides with it when shogged; but it is also
capable of being held stationary whilst the bar h is shogged, which is necessary
at the sixth motion in making the net (according to the Diagram, Fig. 3).
Upon the roller marked C are wound the threads intended to lace or sew the
breadths of net together, and these threads are conducted by the long guides
screwed upon the bar D. This bar D is mounted to admit of being shogged,
which may be done by a lever deriving its movements from a cam fixed upon

page_text: the driving shaft, the bar itself having at its opposite end a spring to force it
against the lever. By being shogged at the suitable times, the threads which
this bar and its guides conduct are carried right and left across and in front
of the warp threads, and by the movement of the carriages and bobbins during
the intervals between the shogging of the bar D are looped upon the bobbin
threads in the manner delineated in the Drawing, Fig. 1. The ordinary action
of the points serves to drive up the lacing at the same time as the twist of the
net. The bar E, or poppet bar, has a perpendicular movement for the purpose
of stopping the turn-again carriages by means of the stops attached to it.
▸ Machines are constructed with different series of movements for producing the
net, and the arrangement and movements of the lacing apparatus require
-varying in: consequence..
Fig. 3 is a Diagram shewing the relative surfaces of the racking wheels at
each of the twelve shogging movements required to make a mesh of lace or
5 net upon one system, which I have adopted at No. 1. Both rows of carriages
are in the front or moving circle bar i. 2, one row in each circle bar (as repre-
sented in Fig. 2). 3, both rows, in the back bar. Front points enter the
threads. 4, one row in each bar. At No. 5 both rows in the front bar.
6, one row in each bar. 7, both rows in the back bar. 8, one row in
cach bar. At No. 9 both rows in the front bar. Back points enter the threads.
10, one row in each bar. 11, both rows in the back bar. 12, one row in
each bar.
At
Fig. 4 is a Diagram shewing the relative shogging movements upon another
system, where the carriages have a different succession of movements.
No. 1, both rows of carriages are in the front or moving circle bar. 2, one
row in each bar. 3, both rows in the back bar. 4, one row in each bar.
Front points enter the threads. At No. 5, both rows in the back bar. 6, one
row in each bar. 7, both rows in the front bar. 8, one row in each bar.
At No. 9 both rows in the back bar. 10, one row in each bar. Back points
enter the threads. 11, both rows in the back bar. 12, one row in each bar.
For some ornamental purposes I propose inserting threads in the lace or
net by looping them upon the bobbin threads at the top of the meshes,
without taking out the warp threads, or turning again the carriages, as
is required for making breadths; and the movements just explained by the
Diagram, Fig. 4, are what I at present find most convenient for this purpose.
I do not confine my claim of the application of this Invention to one sort of
lace machine, or to the particular mechanism herein described; but I claim as
my Invention the particular arrangements for inserting the sewing thread so as
to take hold of two bobbin threads in the manner above described and deli-

page_text: neated in the annexed Drawings, and also for inserting threads in or upon lace
and bobbin net by looping them upon the bobbin threads at the top of the
meshes, and the adaptation thereof to other descriptions of bobbin net machines to
which they are applicable; but I do not claim the exclusive use of all or any
of the parts of the machine or machinery herein described, otherwise than for
the purpose of inserting the lacing thread as delineated in the Drawings, or
for the purpose of inserting similar threads upon bobbin net or lace, by taking
hold of two bobbin threads, and passing across the warp threads; such last-
mentioned threads being inserted in or upon a piece of lace for the purpose of
forming a kind of cloth work, filling, or ornament.
In witness whereof, I, the said John Heathcoat, have .hereunto set my
hand and seal, the Twelfth day of March, One thousand eight hundred
and thints four
Inrolled the Fourteenth day of March, in the year above written.