CERTAIN IMPROVEMENTS IN. MACHINERY. FOR MAKING AND ORNAMENTING LACE, COMMONLY CALLED BOBBIN NET LACE
Year: 1841

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HOOTON-
DEVERILL, of Nottingham, Lace Manufacturer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Tenth day of May, in the fourth year of Her reign, did, for
Herself, Her heirs and successors, give and grant unto me, the said Hooton
Deverill, Her especial licence, full power, sole privilege and authority, that I,
the said Hooton Deverill, my executors, administrators, and assigns, and such
others as I; the said Hooton Deverill, 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 mentioned, 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 AND ORNAMENTING LACE, COMMONLY CALLED BOBBIN NET LACE;".in
which said Letters Patent is contained a proviso, obliging me, the said
Hooton Deverill, by an instrument in writing under my hand and seal,. par-
ticularly to describe and ascertain the nature of my said Invention, and
in what manner the same is to be performed, and to cause the same to be:
inrolled in Her 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
Hooton Deverill, 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, reference being
had to the Drawings hereunto annexed, and to the letters and figures marked
thereon, that is to say:-
My "Improvements in Machinery for Making and Ornamenting Lace com-
monly called Bobbin Net Lace" consist in certain novel mechanism, adapted to
lace making machinery, for the purpose of shogging or shifting the longitudinal
bars of such machinery, and which novel mechanism is intended to be acted
upon by the well-known jacquard apparatus, as commonly applied to looms for
weaving figures, patterns, or devices; by means of which novel mechanism I
am enabled so to work the longitudinal bars of the lace machine as to produce
with great facility various kinds of lace, and an indefinite variety of patterns or
devices in the fabric of the lace, without the apparatus commonly called
Dawson's wheels, or other contrivances heretofore employed for a similar pur-
pose.
As the several constructions of lace-making machinery to which my
novel mechanism is applicable are well known to the trade, it is not necessary
that I should particularly describe them; but it will suffice to shew the manner
in which I connect my improvements to the longitudinal bars of such machines;
and, as the jacquard which is intended to act upon my novel mechanism is a
well-known mechanical agent, it is equally unnecessary for me to describe its
construction and mode of operating. I shall, therefore, merely point out con-
venient and eligible modes of connecting them together, and setting them to
work for the purposes above stated.
In the accompanying, Figure 1 represents a front elevation of the end
standard or frame A, A, of a lace machine, to which my novel mechanism is
attached; and B shews the situation of one of its longitudinal bars.
Figure 2 is a similar elevation, taken partly in section, at a little distance
behind the first Figure.
Figure 3 is an end elevation of the novel mechanism; and Fig. 4 is an ele-
vation, partly in section, of the same mechanism, as it would appear on the
opposite side to that shewn in the third Figure.
Figure 5 is a horizontal view of this mechanism, as seen from above. All
these Figures are drawn upon a scale of one-quarter the real size, and the
respective letters of reference indicate the same parts of the mechanism
throughout. Supposing the lace machine to be driven by rotary power, the
main rotary shaft C having a bevel pinion a at its end, taking into the bevel
pinion at the lower part of the vertical shaft c, will give rotary motion to that

page_text: shaft, by means of which, through a pinion d at the top of the said shaft, the
novel mechanism may be driven; or, if the lace-making machine is worked by
hand, a rotary or reciprocating motion must be given to the horizontal shaft e
in accordance with the movements of the machine, by any convenient means;
as by a connection with the goose-neck tackle, or otherwise. We will suppose
the shaft C to be revolving, the pinion d, by taking into a pinion f, on the
shaft e, will give rotary motion to that shaft. The ends of the shaft e have
double cranks, from which straps or connecting rods g, g, and h, h, are carried
to sliding horizontal bars i and k. These bars i and k are slidden vertically up
and down in slots in the end frames 1, 1, by the rotation of the cranks, and the
bevel edges of the bars in rising and falling take hold of the notches near the
ends of the vertical jacks m, and thereby draw or push the jacks up and down;
as will be further explained.
Figure 6 represents one of these jacks m detached in two positions, drawn
to a scale twice the size of those shewn in the preceding Figures. To the
middle of the jack a tapped piece n is attached to a joint pin o, which tapped
piece is shewn in two positions upon an enlarged scale at Fig. 7. These tappet
picces, of which there are a series, hang upon a stationary axle p, and the nose
of each tappet is intended to act against the tooth q at the upper part of a
pendant lever r, as seen in the enlarged and detached view of these parts at
Figure 8, the face of the pendant lever r, with its teeth q, being represented at
Figure 9, and a top view of the parts exhibited in Figure 8 is shewn at
Fig. 10. These pendant levers 7, of which there are a series, as seen in
Figure 5, swing upon a stationary axles, fixed in the frame, as in Figs. 1, 2,
and 4, and at their lower ends are severally attached by a rod t to one of the
longitudinal bars B. Through each of the pendant levers there is an
adjustable stop u screwed, the end of which, by striking against a horizontal
bar v, affixed to the back of the frame, determines the inward action of the
lever. At the upper part of the frame in front there is affixed another hori-
zontal bar w, which is perforated with a number of holes corresponding to the
number of jacks m, and in each hole there a cylindrical sliding pin or bolt,
which when pushed inwards forces the upper part of the jack into such an
inclined position as will enable the bar k in rising to take hold of the notch at
the upper part of the jack, and to lift it up to the height of the jack shewn at
m* in Fig. 8, and which is forced into the perpendicular position by a spring j
below.
Having now described the construction and arrangement of the parts of my
novel mechanism, I proceed to shew in what manner it may be acted upon by
the series of cards or plates of a jacquard apparatus, or by any such apparatus

page_text: having recesses and stops or elevations capable of operating upon the sliding
pins or bolts in the horizontal bar w, or upon any equivalent agents for the
purpose of shogging or shifting endways any of the longitudinal bars B of a
lace machine. The perforated barrel or prism of the jacquard is shewn at a
mounted upon an axle, which turns in lever arms y, y. These lever arms are
fixed to the ends of a fulcrum axle supported in brackets, extending from the
frame 1, 1, and to the same axle is affixed a tail piece y* (forming part of the
same lever), the lower end of which is acted upon by the rotary cam z on the
horizontal shaft é before described. The several parts of the mechanism, and
their uses, having been explained, I proceed to shew in what manner they act
to work the longitudinal bars B, premising that these bars B' may be guide
bars, comb bars, or any other longitudinal 'bars, the peculiar shogging or
shifting movements of which the evolutions of the lace-making machinery or the
directions given to the threads are determined (for the production of various
kinds of bobbin net fabric, or for the formation of ornamental patterns or
devices in the said fabric) in the way commonly practised and well known to
lace makers. The lace-making machine to which this, apparatus is attached
being set to work, and the jacquard barrel furnished with an endless series of
cards suited to the required pattern to be produced (which is well understood)
à rotary or reciprocating motion must be given to the horizontal shaft 'e in the
way before described. The rotation of the cam z on the shaft e, acting upon
the tail lever y will throw the jacquard barrel a back into the position shewn
by dots in Figure 2, which movement of the barrel by means of a lever catch
as usual causes the barrel to be turned one quarter round upon its axis, and
thereby to bring over a fresh surface of the endless chain of cards at every
vibration of the levers y. The further rotation of the cam will by means of
its larger radius force the tail lever * outward, and 'cause the barrel a of the
jacquart with its card to strike a smart blow against the face of the bar au, and
against the outer ends of the bolts or pins placed therein. Such parts of the
card as are blank, opposite to the ends of the bolts will, by thus striking the
bolts, force them back against the jacks, and thereby place those jacks so
operated upon in the inclined position shewn at m in Figure 8, whilst those
parts of the cards which are perforated will allow the ends of the bolts
opposite to such perforations to pass through the holes into the recesses in the
barrel, and therefore the jacks corresponding to those last-mentioned. bolts
will not be acted upon by the bolts, but remain quiescent. The double cranks
at the ends of the axle.e, will now .cause the links or rods g and to raise the
sliding bar k, and to depress the corresponding bar i. This rising movement
of the bark will bring its bevel edge under the notches of all the jacks m, which

page_text: have been placed by the sliding bolts in inclined positions, and consequently
lift those jacks up whilst the descent of the bar i will in the same manner bring
down all the other jacks m" which stand nearly erect. The effect of this move-
ment of the jacks will be to shift the positions of the tappet pieces n of those
jacks which have been depressed, and to bring their ends or tappets severally
against the teeth 9 of the levers r, thereby pushing the upper parts of those
levers back and causing their lower ends, by means of the rod t, to draw the
bar Bendways, which is denominuted "shogging" a bar, whilst those of the jacks
which have not been depressed, owing to the descending bar i having escaped
them, will keep the ends or operating parts of the tappet n under the beaks
of the pendant levers, and not permit them to act against the levers.; conse-
quently such of the bars B as are connected with the quiescent levers 1* will
not be shogged at that time, but will be drawn in an opposite direction by the
force of their springs, limited by the stop u, striking against the bar v. It will
be seen that the pendant levers 7, which are connected with the longitudinal
bars, are represented of considerable breadth, and that their upper parts or
beaks are cut into several steps or teeth of different heights. These different
steps are designed respectively to correspond to the several tappets placed
opposite to them, in order that the tappets, which are all of equal length, may,
when acted upon, severally force the levers r back such distances as will cause
them to draw the bars B, one, two, or more gates, as the proposed patterns may
require. I would, however, observe that I do not confine myself to the use of
broad pendant levers r, each having several steps at the beak, as I may find it
convenient to use narrow levers in the place of those, each having but one tooth,
but then the teeth of such narrow levers must be of different lengths. Or I
may find it convenient to adapt tappets n of different lengths to levers with
level beaks, both of which may be made to effect the same object.
Lastly, having described the construction and arrangement of my novel
mechanism appended to a lace-making machine, for the purpose of enabling
the movements called "shogging" of the longitudinal bars of such machines
to be governed by the operation of a jacquart apparatus, I desire it to be
understood that I do not intend to confine myself precisely to the forms and
arrangements of all the parts of the mechanism as set out in the Drawing,
knowing that they may be varied in several particulars, and yet made to answer
the same purpose; but that which I consider to be the essential novel feature of
my Invention, and desire to claim under the above in part recited Letters
Patent, is the adaptation of the jacquart apparatus to a lace-making machine,
through the agency of jacl s, tappets, and levers, upon the principle above
described, for the purpose of shogging the guide bars or other longitudinal bars