CERTAIN IMPROVEMENTS IN MACHINERY FOR MAKING LACE
Year: 1829

page_text: TO ALL TO WHOM THESE- PRESENTS SHALL COME, I, THOMAS
BAILEY, of Leicester, Frame Smith, send greeting.
WHEREAS His present most Excellent Majesty King George the
Fourth, did, by His Letters Patent under the Great Seal of Great Britain,
bearing date at Westminster, the Fifth day of August, one thousand eight
hundred and twenty-nine, in the tenth year of His. reign, give and grant.
unto me, the said Thomas Bailey, His especial licence that I, the said Thomas
Bailey, my executors, administrators, or assigns, and such others as I, the said
Thomas Bailey, my exors, adñors, 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 send,
within England, Wales, and the Town of Berwick-upon-Tweed, my Inven-
tion for "CERTAIN IMPROVEMENTS IN MACHINERY FOR MAKING LACE;" in which
said Letters Patent is contained a proviso that I, the said Thomas Bailey,
shall cause a particular description of the nature of my said Invention, and in
what manner the same is to be performed, to be inrolled 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.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Bailey, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, is described and ascertained.
in manner following (that is to say):-

page_text: My improvements in machinery for making lace consist in certain combi-
nations of machinery (herein-after described) to be added to such machinery
for making bobbin-net or twist lace as is commonly known by the name of
Lever's single-tier hand machinery; and by the aid of my additions the requisito
movements are given to all the parts of such Lever's machinery (in the proper
order and succession to make lace), by motions derived from one handle or
axis, which is turned round with a continuous circular or rotatory motion
either by the hand of the workman or by the mechanical power of millwork.
And whereas the structure and operation of Lever's lace machinery is well
known to frame smiths and lace manufacturers, it is unnecessary to describe
the same in this Specification; but for the full explanation of my Invention
I have hereunto annexed four Sheets of Drawings, which represent a Lever's
machine with my improvements attached thereto, the parts constituting my
improvements being distinguished by colouring and shading, and the parts in
common use in Lever's machinery being left in outline. The names of the
principal parts of the said machine are written on their respective representa-
tions in the Drawings; and I shall describe certain alterations, additions, and
arrangements which I have made in some of the parts of Lever's lace
machinery in order that it may perform certain parts of its operations with
more facility and safety than heretofore, and be thereby better adapted to be
worked by means of my combination of machinery with rotary motion as
aforesaid.
Sheet I. is a front elevation of the whole machine. Sheet II. is a vertical
transverse section of the whole machine. Sheet III., an elevation at the back of
the machine, and Sheet IV., a horizontal plan of a part of my additional
machinery detached, and also detached views of other parts thereof. The
same letters of reference are used to denote the same parts in all the Figures,
and they are all drawn to a scale of four inches to a foot, or one third of the
real size; but respecting dimensions, it must be remarked, that my improve-
ments are intended for the most part to be added to the existing Lever's
machines now in use as hand machines. By the term hand machines I mean
that the requisite movements of their parts are given by handles and treadles
which are moved alternately in due order and succession by the hands and
feet of the workman; my improvements being added will convert such Lever's
machines into rotary machines, for all the requisite movements will be derived
from one revolving handle or axis. It follows, that the exact dimensions. of
the several new parts are to be constructed according to my Drawings, must
be varied when necessary to suit the parts of the old Lever's machine to which
they are to be applied.

page_text: DESCRIPTION OF THE NEW MACHINERY.
A, A, A, A, is the new framing, consisting of four strong iron bridges,
situated side by side parallel to each other in pairs, one pair at the right-hand
end of the machine, and the other pair at the left-hand end. The bridges A
are fastened at their ends by screws to the seat rail and to the lower back rail
of the old wood frame, as is shewn in the Figures. These bridges support
the bearings for the several rotative axes and the wheelwork, viz*. B is the
horizontal axis to which the first motion is given by a handle or crank C;
which the workman turns round with a continuous circular motion when be
standsin front of. the machine, so that he can see the work it is making. On
each end of the axis B, a spur wheel D is fixed, in order by the interme-
diate-wheels G, G, and the pinions F, F, to turn the lower horizontal axis E,
which extends all the length of the machine; the pinions F are fixed one on
each end of the axis E, and the intermediate wheels G, G turn on fixed stud
pins which are supported by the outermost bridges A, A. By this wheelwork
the rotative motion that is given by the workman to the handle C, is trans-
mitted to the horizontal axis E, but the pinions F, F, having only half as many
teeth in each as the wheels D, D, the axis. E is caused to turn round twice for
every turn that the workman gives to the crank handle C; and H, H are two
pinions that are turned round by the pinions F, F, which have each the same
number of teeth as the pinions H, H, and the letters are fixed on the
extreme ends of two short axes which are formed into cranks a, a, at the
middle part of each axis between the pairs.of bridges A, A. On these cranks
two crank rods b, d, b, d, are jointed, and the other ends thereof are jointed
to pins at the extremities of two short arms e, e, which are fixed. to the front
landing bar of the lace machine in place of the two handles by which. the
workman gives motion to that. landing bar in the ordinary way of working
Lever's machine by hand.. The incessant continuous circular motion which is
given. to the cranks a, a, by the wheelwork H, F, G, D, from the crank
handle C,. is caused by the crank. rods b, d, b, d, to move the front landing
bar backwards. and forwards, with a swinging motion about its main joint pins,
in the same manner and for the same. purpose as is usually done by the work-
man: with his hands, videlicit, to cause the front and back landing, bars,
together with the front and back catch bars and other. parts which belong to
those bars respectively; to mutually advance towards and, recede from the
vertical warp threads with equal swinging motions about their joint pins in
contrary directions to: each other,. (that. isi to say); when the front. landing, bar
and front catch bar are moved away from the warp, threads; the back: 'landing,

page_text: bar and back catch bar will also move away from the said threads at the same
time, and vice versa, the back bars will approach or return towards the warp
threads at the same time as the front bars, such contrary swinging motions
being produced by the usual drawing tackle levers, their goose-neck rods,
and half jacks, whereby the front bars are connected to the back bars, and
such contrary swinging motions of the front and back landing bars is adapted,
by the aid of their respective catch bars, to pass the bobbins and carriages
through between the warp threads from the front combs into the back combs,
and then from the back combs into the front combs alternately, and that by
the aid of the racking motion of the guide bar between every such passage
causes the bobbin threads to twist around the wharp threads. The front and
back catch bars are caused by their respective catch-bar wheels to drop into
the arches or notches of the carriages at one time into the back notches, 'and
the next time into the front notches thereof, according as the carriages are.
required to be drawn through into the front combs or into the back combs,
and at the same time that one catch bar is so let fall by its catch-bar wheel
into the notches of the carriages, the opposite catch-bar is lifted up clear out
of the opposite notches of the carriages by its own catch-bar wheel, and so on,
all the aforesaid parts operate in the well known manner of Lever's machine,
until the carriages have been passed three times through between the warp
threads, and have thereby completed the operation of twisting the bobbin
threads around the warp threads for a course or half mesh. To accomplish
that twisting by my improvements the crank handle C must be turned by the
workman one and half turns, and the cranks a will then have made three
turns and will have passed the carriages three times through between the
warp threads. To effect the division of the carriages into two divisions by
the front and back dividers, for the purpose of crossing the bobbin threads, I
cause the front and back landing bars to stop short of approaching so near
towards each other as they do at those times when all the carriages are
required to pass in one row; I produce that stopping short of the said bars
without any interruption of the continuous circular motion of the cranks a, a,
by causing the crank rods b, d, b, d, to lengthen or extend themselves out to
a greater length than usual at that period when the carriages are to be divided
into two divisions by the aid of the front or back dividers, but as soon as the
division is effected the said crank rods are caused to shorten again and resume
their usual length, so that they will not move the landing bars any further
outwards from the warp threads than their accustomed distance, that is, as far
as is necessary to draw the two divisions of the carriages quite into the front
and back combs respectively, so as to be clear of the warp threads. In order

page_text: that the crank rods b, d, b, d, may be capable of lengthening; as aforesaid,.
I make each rod of two bars of metal, 6 and d, placed flat one upon the other
and united together by screws which pass through oblong slits in one bar and
are screwed fast into the other bar, so as to admit of one bar sliding freely upon
the other bar for a short distance in the direction of their length.. The joint
at the lower end of each crank rod by which it is united to its crank ȧ, is
formed at the end of the upper of the two bars b, and the other joint at the
upper end of each crank rod by which it is united to the short arms e, e, of
the front landing bar is formed at the end of the lower of the two bars d; fis
a stud fixed fast to the lower bar d of each crank rod by a shank which
passes through a slit in the upper bar b. The studs f, in the two crank bars;.
form a support to a horizontal sliding bar g, which rests upon them so as to
be moveable in the direction of its length through a short distance; it is
guided by screws which pass through slits in each end of it, and are screwed
fast into the studs f; at each end of the sliding bar g is a prominent wedge
rising up from the upper or front side of the bar; when the bar g is slided as
far as it can go to the right hand, those wedges introduce themselves beneath
the points of two gage screws h, which are screwed fast through the bends. at.
the ends of the upper bars.b of the two crank rods b, d; and when the said
wedges are so introduced beneath the points of the gage screws h, the crank
rods are thereby contracted to their shortest length, and are as firmly retained
at that length as if they were each formed of one bar, or as if the two bars b
and d of each rod were firmly screwed together so as to have no sliding
motion; but when the sliding bar g is moved or slided endways as far as it can go
towards the left hand, then the prominent wedges at each end of it are carried
away from beneath the points of the gage screws h, and permit the same to
approach towards the studs f, whereby the rods are left at liberty to lengthen
or extend themselves out as much as is permitted by the slits for the screws
which unite the two bars b and d of each rod together. The extension of the
two rods is produced as soon as the wedges are withdrawn, because the
machine springs which are applied in the usual manner to overbalance the
front and back landing bars, always draw the said bars away from the warp
threads, so that they will not approach. thereto unless the crank rods b, d,
oblige them to do so; consequently, when those crank rods (by the removal of
the wedges at the ends of the sliding bar g) are capable of lengthening out,
they will not compel the landing bars to approach so near to each other as
those bars must do when the said wedges of the sliding bar 9 are interposed
beneath the points of the gage screws h, so as to retain the crank rods. to
their shortest length; the sliding bar 9 is drawn endways towards the right

page_text: hand by a spring which always tends to bring the wedges at the ends of
the bar g beneath the gage screws.h, and it is moved endways towards.
the left hand by the following means:-When it is required to disengage
the wedges, the right-hand end of the sliding bar g abuts endways against
a piece k, Figures 1 and 4, which is moveable about a centre pin, fixed
fast into the upper bar 6 of the right-hand crank rod.
The piece k
applies obliquely across the end of a horizontal lever l, which is situated
against the inside of the upright legs of the wood frame, being poised by its.
middle upon an upright fixed pin, which is supported by some part of the
fixed frame, and the opposite or back end of the level is connected by a
short horizontal link m with the back end of another similar horizontal lever
n, which is situated at the outside of the upright legs of the wood frame, and
is poised by the middle on an upright fixed pin supported by that frame.
The front end of the lever n passes under the guide bar wheel (which is
mounted on the upright spindle as usual in Lever's machines), and the end
of the lever n is acted upon by two pins, which are fixed into the guide bar
wheel (or else into an extra wheel fixed on the upright spindle), so as to
project downwards from the under surface thereof. The said parts n, m, l, k,
and g, are suitable combined and arranged, in order that one or other of
the said pins in the guide bar which shall at the proper moment for dividing
the carriages come in contact with the front end of the lever n, and move
the same away from the upright spindle of the wheels, videlicet, towards the
left hand, and that motion is transmitted by the link m, the lever 1, and the
piece k, to the sliding bar 9, so as to force the same endways towards
the left-hand in opposition to the spring, and thereby the wedges at the ends
of the bar g, are removed from beneath the points of the gage screws h, in
order to leave the crank rods at liberty to lengthen out as before stated. Note:
The wheels on the upright spindle are moved round one tooth (in the usual
manner of Lever's machine by the driver, which acts in the teeth of their
ratchet wheel) every time when the landing bars arrive at their greatest
extension or departure from the warp threads; and it is then that the aforesaid
wedges are removed in the manner above described from beneath the points
of the gage screws h, in order to set the crank rods at liberty to lengthen out;
which liberty being given to them, the front landing bar, being overbalanced
by its machine springs, will not begin to be moved towards the warp threads
until the lengthening of the crank rods has taken place, and after that the
crank rods (in their lengthened state) will draw down the front landing bar
towards the warp threads; but not so near thereto as is done. at other times
when the crank rods are retained at their shortest length, for the landing bars

page_text: and catch bars will stop so much short of the distance to which they usually
approach towards the warp threads as will permit the edges of the front
and back catch bar to drop into the back and front notches of the carriages
respectively after those carriages are divided into two divisions by the action of
the dividers, which takes place when the crank rods are lengthened as afore-
said, and at the instant when the landing bars are approached as near towards
the warp threads as they can be approached whilst the crank rods remain
so lengthened. The dividing of the carriages into two divisions by the action
of the dividers is effected in the following manner:-When the machine is
worked according to my improvements, and the same is a little different from
the usual course of dividing in Lever's hand machines, owing to the circum-
stance that my improvements do not cause the landing and catch bars to
approach so near to each other or to the warp threads at the times when
the division is to be effected as at other times when all the carriages are
intended to be passed through in one division; whereas in the usual manner
of working Lever's machines by hand the landing and catch bars are always
put down towards each other to the same distance, and for dividing they are
withdrawn again a little, in order to separate them from each other as much
as is necessary to allow the edges of the two catch bars to drop into the
front and back notches of the carriages respectively after they are divided
into two divisions; according to my improvements the dividing of the carriages
is performed by one set of dividers acting at a time, videlicit, by the back
dividers being chiefly operative when the carriages are to be divided in
coming through out of the back combs into the front combs, and by the
front dividers being chiefly operative when the carriages are to divided in
going through out of the front combs into the back combs; for instance, to
divide when all the carriages are in the back combs and coming forwards,
the carriages stop short before they arrive at the central position, in con-
sequence of the lengthening of the crank rods, and at the same period the
front points are descending (by means of other parts of my improvements t
be herein-after described), in order to take up the work. In so descending,
the front points lift up the back catch bar (by its connection with the arm
which projects out from the front spindle bar in the usual manner), and the
edge of that catch bar is thereby raised out of the notches of the carriages,
leaving them all at liberty, and also in descending the front points draw up
the tee lever at the back of the machine in the usual manner, and that
raises the tail of the back dividing bar, so as to bring that part forwards,
whereby the ends of the dividers overtake every other of the carriages
(videlicit those which are to become the front division), and push them
1'

page_text: forwards without disturbing the intermediate carriages, which are to become
the back division. When the carriages of the front division are pushed so
much forwards by the back dividers as to pass beyond the central position
until their front notches will be exactly beneath the edge of the front catch
bar, that bar is let fall into the said notches by the usual means, videlicit by
the back dividing bar pushing the driver for the front catch-bar wheel so much
forwards as to turn the said wheel round far enough to let the catch bar drop.
By the time that the division is thus effected, and the front division of
carriages is locked by the front catch bar, the front points having entered
amongst the threads will begin to go up again to take up the work in the
usual manner, and in so doing they let down the back catch bar in the usual
manner, so as to allow the edge of that bar to drop into the back notches
of the back division of the carriages; also as they go up the points let down
the tee lever, which by relieving the tail of the back dividing bar allows
that bar to move back again by its springs as usual. The two divisions aro
thus locked at back and front respectively; and as the landing bars. recede
from the warp threads the two divisions will be drawn out from between
the warp threads, one division into the back combs, and the other into the
front combs as usual. To divide the next time, when all the carriages are
in the front combs and going backwards, they stop short before they arrive
at the central position as before stated, and the front catch bar is lifted up
out of the notches of the carriages by its catch bar wheel in the usual
manner; the back points then descend to take up the work; in so descending
they lift up the back catch bar by the usual connection with the short lever
that projects out from the back spindle bar, and the back points in their
descent also cause the front dividing bar to move back towards the carriages
by the following means:-An arm K is fixed to the back spindle bar (for
the back points), and projects out forwards therefrom; the end of it is
connected by a link p with the back end of a lever g, which is poised by the
middle on a fixed pin supported by a bracket rising up from the cross bar,
and the front end of the same lever is connected by a rod L, with a short
bend lever M, which moves on a fixed pin that is supported by the front land-
ing bar, and the end of the lever M projects outwards before the front dividing
bar in such manner that when the back points' descend and draw up the rod L,
the lever M will move the front dividing bar backwards towards the carriages.
In so moving the ends of the dividers take the edges of those carriages
which are to become the back divivion, and push them back without
disturbing the other intermediate carriages. The carriages of the back division
are thus pushed back by the front dividers beyond the central position until

page_text: their back notches come exactly beneath the edge of the back catch bar,
which bar is at that instant let down into those notches by its usual con-
nection with the short lever of the back spindle bar and the going up of the
points. By the time that the division is thus effected and the back division
of carriages is locked by the back-catch bar, the back points having entered
amongst the threads, will have taken up the work in the usual manner; and
in so doing they cause the front catch bar to drop into the front notches of
the carriages of the front division by the usual connection with the driver of
the front catch bar wheel turning that wheel a little further round; and the
back points in going up also allow the front dividing bar to come forwards
away from the carriages by releasing the parts K, p, q, L, M., before
described. The two divisions of carriages are thus locked at front and back
respectively, and as the landing bars recede from the warp threads the two
divisions will be drawn one into the front combs and the other into the
back combs as usual.
Note: In my mode of effecting the division (by stopping the landing bars
short before they have moved the carriages to the central position), the
motion given to the carriages by the dividers is always in that direction in
which the carriages are required to move after the division is made, and no more
motion is given to the carriages in the act of dividing them than is absolutely
necessary, for only one of the divisions of carriages is moved by the dividers at
each time, the other division standing still in the combs. The upper end of
the rod L is not jointed to the front end of the lever q, but the rod merely
passes through a hole in a socket at the end of the lever, and a thumb nut
which is screwed on the top of the rod L, comes to bear on the socket when-
ever the lever q is required to draw up the rod in the act of dividing, as before
described. But when the front landing bar comes forwards in the regular
course of working, and the front dividing bar comes with it, the rod L moves
freely upwards through the hole in the socket at the end of the lever 9 without
giving any motion to that lever. To give motion to the points in order to
take up the work, two wipers P, Q, are fixed upon the middle part of the
length of the lower horizontal axis E, and revolve therewith; they are adapted
to act (when necessary) upon rollers at the ends of two treadles R, S, the.
horizontal axles T, V, of which are supported in sockets at the back of the
frame. The right-hand treadle R is to give motion to the front points, and
the left-hand treadle S is to give motion to the back points, by means of upright
rods which extend as usual from each of those treadles to the front ends of
the sinking levers at the upper part of the machine; and the opposite or back
ends of those levers are connected by links with the back arms of the spindlo

page_text: bars, in order that when either of the treadles R or S is pressed down the
point bar belonging thereto may also be brought down in the usual manner of
Lever's machines; and when the said treadle is relieved the points will be
carried up again by their back springs in the usual manner. When the
machine is worked by my improvements, the revolving wipers P, Q, act at
proper intervals (in lieu of the feet of the workmen) to press down the treadles
Ror S by acting on the rollers thereof. But those wipers must not act on the
treadles every time that they turn round; therefore the horizontal axes T, V,
on which the treadles are fixed are moved endways in their sockets in the
direction of their length, in order to remove the rollers at the ends of the
treadles R or S so much sideways out of the circular paths in which the
wipers P, Q, revolve, that those wipers in their revolution with the horizontal
axis E will miss the said rollers and produce no action on the treadles unless
the horizontal axis of that treadle which is to be operated upon is first moved
endways so much as to bring the roller at the end of that treadle into the path
of the corresponding wiper, which wiper will then in the course of its revolu-
tion press down that treadle and actuate the points belonging thereto in the
same manner as in Lever's hand machine. When the workman presses down
the treadle with his foot, the horizontal axes T and V are thus moved endways
by the following means every time that the points are required to be put in
action. W, Sheet 2 and 3, is a ratchet wheel, with 8 teeth fixed on one end
of a horizontal axis a, which turns in suitable bearings, supported by the
frame at the back of the machine. W is a driver jointed to one of the
drawing tackle levers in a suitable manner to move the wheel W round one
tooth every time that the landing bars are extended, and consequently at the
same time as the guide bar wheels are moved. X is a wheel fixed on the
axis x, and turning with it. s, a lever applied horizontally above the wheel x,
.and t another similar lever applied horizontally beneath the wheel x. The
back ends of the two levers s and t are moveable about fixed centre pins,
which are supported by a suitable brace from the frame, and each levers and t
carries a small roller near the middle of its length, to apply against the circular
edge of the wheel X. The frond ends of the two levers s and t are connected
by two upright rods with the short arms of two bent levers Y, Z, which are
poised by their middles upon fixed centre pins supported by the frame, and the
lower ends of the two levers Y, Z, apply to the extremities of the two horizontal
axes T, V, of the treadles R, S. Note: The two axes T, V, are always urged
endways one towards the other by a horizontal spring y, the two ends of
which are fastened to two hooks, one projecting out of the end of one axis T,
and the other out of the end of the other axis V. The action of the same

page_text: spring y also urges the rollers of the levers s and towards the edge of the
wheel X. A notch is cut out in one part of the circumference of the wheel x
large enough to admit one or other of the rollers of the levers s. and t into the
notch when it is turned towards either of them, but so long as the said
rollers bear upon the circular edge of that wheel the lever s is thereby borne
upwards, and the lever t is borne downwards in opposition to the action of the
spring y; and so long as that is the case the two upright rods by which the
ends of the levers s and are connected with the upper arms of the bent levers
Y, Z, being adjusted to a suitable length will cause the lower ends of the said
levers Y, Z, to keep the horizontal axes T and V removed so far endways one
for the other that the rollers of the treadles R and S will stand beside of the
respective circular paths in which the wipers P, Q, on the horizontal axis E
revolve. When the time arrives for the carriages to be divided, the notch in
the wheel X will by the progressive motion of that wheel present itself to the
roller of the upper lever s, if it is that time when the front points are to operate,
or else to the roller of the lower level t if it is that time when the back points
are to operate, and then the spring y (being no longer counteracted, will
move that axis T or V of the treadles whereof the lever s or t is set at liberty
by its roller entering into the notch of the wheel X, and the motion so given
to the axis T or V by the spring y will bring the roller of its treadle R or S
into the path of the corresponding wiper P or Q; and then as that wiper
comes round in its circular path, it will press down that treadle, and thereby
give motion to the points, belonging to it at the proper moment and in the
proper manner, as is usually done by the foot of the workman in Lever's hand
machine; and after the said wiper P or Q has passed by the roller of the
treadle and allowed the same to return (and consequently allowed the points
to be carried up by their back springs); then the driver w which turns the
ratchet wheel W round one tooth every time the landing bars are extended,
causes the notch in the wheel X to move away from the roller of the levers
s or t, and that wheel presenting its circular edge to the said rollers causes the
said lever sort by its connection with the bent lever Y or Z, to force. the
axis T or V of that treadle R or S, which has just been operated upon so
much endways in opposition to the spring y as will remove the roller of that
treadle sideways out of the circular path of that wiper P or Q which operated
last time, so that the said wiper will produce no effect the next time it
comes round; and in that manner the parts will remain until the carriages
have been passed three times between the warp threads, and then at the fourth
time, when the carriages are to be again divided, the ratchet wheel W having
been turned a tooth each time, will have gone half round, so as to present its

page_text: notch to the roller of the opposité lever s or t to that which was set at liberty
at the last time of dividing, and thereby the other treadle and wiper and points
which stood still the last time of dividing are brought into operation, and
those which then operated now stand still, and so on.. And further, by way of
safeguard to keep up, the points to their proper places in the meshes of the
lace after they have taken up, I fix two wheels 1 and 2 (Sheet 3) upon the
horizontal axis w, before described; and I place a horizontal lever, 3 and 4,
beneath each wheel. The levers 3 and 4 are moveable about fixed centre pins
at their back ends, those pins being supported by suitable brackets from. the
frame. Each lever 3 and 4 has a roller near the middle of its length to apply
to the edge of its wheel 1 or 2, and there is a connecting link 5 and 6 from
the front end of each lever 3 and 4 up to the back arms of the spindle bars for
each set of points. Each wheel 1 and 2 has a notch in one part of its circum-
ference to admit the roller of its lever 3 or 4 at the time when the points
belonging to that lever are to be brought into operation by the combined
action of the wheel X and one or other of the wipers P or Q, as before
described. But when the circular edges of the wheels 1 and 2. apply to the
rollers of the levers 3 and 4, they will, by their links 5 and 6, confine. the
back arnis from rising by any accident, and will act in aid of the back springs,
which are applied in lieu of the usual back weights to secure the points from
descending until the proper time, and then the notches in the wheels 1 and 2
will (one or other of them) be presented to the rollers of the levers 3 or 4, so as
to release the points to which that wheel and lever belongs. The points that
are so released (whether back or front) and the time when they are released
will always be the same as those which the wheel X brings into action by
cne of the wipers P or Q, and other means above described.
Having now described a machine constructed and working according to my
improvements, I do hereby declare that what I claim as my Invention under
the said Letters Patent is that particular combination of parts and machinery
herein-before described (taken as a whole), to be added to Lever's lace-machi-
nery, in order to derive from an interrupted and continuous circulation motion
of one handle or revolving axis all the motions requisite for the several parts of
such Lever's lace machinery in due order and 'succession for the making lace
thereby; and I do not claim the Invention of any particular parts or machinery
of which that combination is composed, excepting the crank rods herein-before
described which lengthen out, together with the parts which occasion them so to
engthen at the proper time for the dividing of the carriages, to be performed
in the manner herein-before described, for it is by means of that improvement
that I am enabled to give the requisite alternating motions to the landing bars

page_text: and catch bars by means of cranks which revolve incessantly without stopping;
and in particular I do not claim the application of revolving cranks to give
alternating motions to the bars of Lever's machinery, the same having been
applied heretofore, but not in such manner as to avoid stopping or suspending
their motion whilst the dividing and taking up is performed.
In witness whereof, I, the said Thomas Bailey, have hereunto set my
hand and seal, this Second day of February, One thousand eight
Land think.