IMPROVEMENTS IN EMBROIDERING MACHINES
Year: 1882

page_text: LETTERS PATENT to Alexander Melville Clark of the firm of A. M and
W Clark of 53, Chancery Lane, in the County of Middlesex, Patent Agents,
for an invention of IMPROVEMENTS IN EMBROIDERING MACHINES communicated
to him from abroad by Joseph Arnold Groebli of New York City in the
County and State of New York, United States of America
COMPLETE SPECIFICATION filed by the said Alexander Melville Clark at
the Office of the Commissioners of Patents on the 21st September 1882.
ALEXANDER MELVILLE CLARK of the firm of A. M. and W. Clark of 53 Chancery
Lane in the County of Middlesex, Patent Agents. "IMPROVEMENTS
EMBROIDERING MACHINES." Communicated to me from abroad by Joseph Arnold
Groebli of New York City, in the County and State of New York, United States
of America.
IN
This Invention comprises a mechanism for moving the suspended fabric-frame of.
embroidering machines automatically, in any direction, in the same plane, and
for performing this movement for every new stitch, or series of stitches, to be made
through the fabric.
Embroidering machines having vertically suspended fabric-frames as heretofore.
constructed or proposed, even when united to Jacquard mechanism, were either
defective in adjustability, or were so arranged that a stitch could not be made
after every movement of the frame, but on the contrary, the frame had to be
brought back to a normal position after every stitch before it could be moved from
that normal to the new position, for the new stitch. In order to avoid these
defects, this Invention comprises new mechanism for moving the frame, and also
new mechanism for regulating the direction and extent of the movement.
The first part of the Invention consists in connecting the movable fabric-frame
with a set of reciprocating slides which have guides or grooves for transmitting
their reciprocating movement by the intermediate mechanism to the frame. These
guides are represented as crossing one another, and either one of the slides can

page_text: move the frame in one direction or in the opposite direction, while the other slide
is either stationary or also in motion, and by these slides the fabric-frame is
moved in any desired direction and to any desired extent within the limits pro-
vided for its movement. Secondly, the Invention consists in the mechanism for
moving the afore-mentioned slides according to the requirements of the pattern.
To this end Jacquard needles are employed to lift hooks which when lifted are
actuated by levers and impel beams which cause the slides to be moved in the
desired direction. The third part of the Invention relates to the means for con-
necting said slides with said beams and consists of certain racks, pinions, and
screws, and other devices for automatically controlling the motion of the slides as
prescribed by the pattern on the Jacquard card according to the requirements of
the pattern to be produced.
The extent of motion of the beams is regulated by the pattern card, which, by
elevating any one of the Jacquard needles, lifts the corresponding hook, and thus
causes it to be engaged with a lever which operates so as to give a greater stroke
to the hooks at one side of the machine than to those at the other side, all as will
hereinafter be more fully described. Necessarily therefore the Invention consists
furthermore, in many details of improvement that will be hereinafter more fully
specified, notably in employing two sets of Jacquard needles and hooks and two
slides for moving the one fabric-frame.
In the accompanying drawing, Figure 1 represents a face view of the fabric-
frame showing how the same may be connected with the slides. Figure 1a is a
detail face view of the grooved guides. Figure 2 is a plan or top view of the
main mechanism. Figures 2a, 2b and 2°. are detail views of parts of the mechanism
employed for controlling the position of the racks. Figure 3 is a side elevation of
the mechanism which is shown in plan in Figure 2. Figure 3a is a detail sectional
view of part of one of said slides where its nut engages with the screw. Figure 4
is a rear elevation partly in section showing the pattern prism and the Jacquard
needles. Figure 5 is a top view of the hooks which are controlled by the needles
of the Jacquard mechanism, Figure 6 is a side view partly in section showing the
hooks and their connection with the levers and with the needles that lift the
hooks. Figure 7 is a detail plan view showing the mechanism for locking the
screws. Figure 8 is an enlarged side view of the mechanism for shifting or setting
the racks. Figure 9 a side view of part of said mechanism,
The letter A (figure 1) represents the fabric-frame of an embroidering machine.
This frame is suspended either by means of weighted levers B, as shown, or other-
wise supported in a stationary framing C, so as to be capable of a certain amount
of movement in any direction in the plane of its face, but not otherwise. The
frame A is connected by a rod D, or series of rods, with studs ab (see Figure 3).
These studs a b carry two heads a² and b². The head a² engages with a guide a³
attached rigidly to a slide E, and the head 62 engages with a guide b3 attached
rigidly to a slide F. The guides depicted in the drawings are grooved, but they
may be tongued or may have rods on which the heads may slide. The two
guides a³ and b³ are represented as diagonal to the direction of the bar D and at
right angles with one another which is their most advantageous relative arrange-
ment. The result of this peculiar arrangement of engaging the studs a b with the
two slides E F that have the guides is, that if one of the slides only is moved up,
the studs obliged to be in those parts of the guides which overlap will move in
the direction of the guide in the other of said slides, and with them, the fabric-
frame. Thus if the slide E be raised, the result will be that the frame A will
move upwards to the left, but when the slide F is raised, the frame A will move
upwards to the right; when the slide E is lowered the frame A will move down-
wards to the right, and when the slide F is lowered the frame A will move
downwards to the left. Consequently by moving either one of said slides only,
the fabric-frame will receive a motion upwards or downwards and to the right or
left as may be desired, but when both of the slides are moved simultaneously
upwards the same distance, the frame A will be simply raised, and in like manner

page_text: the same will be only lowered if both slides are moved downwards simultaneously.
A complete horizontal motion can be obtained by raising one of the slides and
lowering the other at the same time and to the same extent. And thus it will be
perceived that by regulating the motions of the two slides E F so as to move
either one only in one direction, or both in the same direction, to the same extent,
or to varying distances, or both in opposite directions to the same extent or to
varying distances, every imaginable direction of movement can be imparted to the
frame A. The said frame can thus be adjusted to present to the embroidery needle
after every stitch, any particular part of the fabric which it may be desired to
have pierced by a new stitch. The studs a b may not be connected to the same
rod D but each stud may have a separate connection by rods or levers, or both,
with the fabric frame. Each of the slides E F is guided vertically in a stationary
framing. Thus the slide E is guided in the stationary framing E2, and the slide F
in the stationary framing F2, and in these stationary frames the said slides may
either be dovetailed, as indicated in Figure 2, or rebated or otherwise properly
guided.
It is clear that although I have described the one branch of the Invention,
namely, that branch which relates to the manner in which the frame A is moved
in the desired direction, and to the desired extent, as applicable to a frame that is
vertically suspended (in which case the slides E and F receive a vertical motion)
nevertheless it is clear that the principle of the Invention, as far as described, is
also applicable to a fabric-frame which is suspended or supported in an other than
a vertical position, in fact it is applicable to a horizontally placed fabric-frame, or
the frame may move in an intermediate direction between the horizontal and
vertical without requiring additional Invention if such a direction of motion should
be preferred.
I also desire it to be understood that it is not necessary that the slide E should
move in a parallel direction with the slide F, that is to say, vertically if the slide F
moves vertically, as I find that the effect upon the frame A can be fully attained
even if one of the slides (say the slide E) moves horizontally, while the other slide
moves vertically, or vice versa, and so far as this feature of the Invention is con-
cerned, I desire it to be understood that it is not limited to the mechanism which
shall hereafter be described as the best mechanism for moving said slides, as the
desired result can be obtained perhaps in an inferior manner by joining the two
slides E F with mechanism other than that with which they are represented as
connected.
The slide E can be moved up and down by means of a screw G and the slide F
by means of a screw H. The spindles of both these screws are hung in fixed
bearings. The nuts for these screws are set into the upper parts of said slides
respectively, or in any other part thereof, and are by preference each made in two
parts, as indicated in the diagram Figure 3a, so that if the thread of the nut or
screw should wear; the slack may be taken up by bringing the two parts of which
the nut is composed closer together and then re-uniting them by means of small
bolts or screws. The screws Ğ and H have their bearings in the general frame-
work of the machine and are not capable of up and down motion, only being
intended to rotate. The one screw G carries a pinion g, and the other screw H
carries a pinion h, the two pinions being in different planes and engaging respec-
tively with toothed racks I and J. Each of these racks is a double rack, as
indicated in Figure 2, but of such width that only one of its rows of teeth can at
any one time gear into the teeth of the pinion to which such rack pertains. The
double rack I is securely jointed to a transverse beam L and the double rack J is
in like manner jointed to a transverse beam M, the beam M being above the beam L
as shown in Figure 3.
It follows from what has been said that by moving the beam L in a horizontal
plane the rack I can be moved and the screw G thereby turned, and that by
moving the beam M in a horizontal plane the rack J can be moved and the
screw. H thereby turned. It remains to show how the beams L and M are set in
•

page_text: motion, and how the racks I and J are adjusted to reverse the rotation of their
respective screws.
Referring to Figures 5 and 6, it will be seen that the beam M is above a series
of "hooks" N, and that projections of those hooks engage the outer face of
said beam. One of these hooks N is in Figure 6 shown to be raised so as to bring
another projection j on it into the path of a lever O, and this lever when moved in
the direction of the arrow shown in Figure 2, will pull the hook N in the same
direction and thereby draw the beam M and thus move the rack J, but when neither
of the hooks is lifted into the path of the lever as shown in the lower part of Figure 6,
so that the said lever, when moved, will not find any shoulder j in its path, then
the beam will remain stationary. Whatever has been said with reference to the
hook N and lever O as applied to the beam M, applies likewise to the beam L, which
is in Figure 6 shown to be in contact with the projection of a hook N2 which in
turn is capable of being taken hold of by a lever 02 when the same is in line with a
shoulder j. Figure 5 shows a portion of the beam M above a series of hooks N, there
being a large number of hooks beneath each of the beams, and each of these hooks is
engaged with one of the needles P of the Jacquard mechanism. These needles P stand
on the Jacquard prism Q over which the card Q' is passed. This card is intended to be
so arranged that it will allow the majority of the needles P to drop through, but
that particular one or more of the needles (for in this construction I prefer to move
each beam by just one needle at a time) which needle finds a solid part of the
card in its way, will thereby be raised, and will cause one of the hooks N (or N2)
to be lifted into the path of the corresponding lever 0 (or 0%). Instead of having
the needles P work on the prism Q so that they drop through the card, excepting
the needle which is to raise one of the hooks, the mechanism can readily be so
arranged that the hook actuating needles drop into apertures of the card, leaving
the other needle or needles on the solid part of the card. The levers O and O2
receive a constant oscillating motion by suitable mechanism. Thus in Figure 3,
the two levers O and O2 are shown to be united by a bracket k which is coupled
to a slide by a connecting rod a jointed to lever o at 12, the slide 7 being con-
nected by a rod m with a crank n that is rotated in the direction of the arrow
around the shaft o which shaft by suitable gearing receives its motion from the
driving shaft R of the machine. The levers O and O2 have their fulcra at p (see
Figure 2) and are engaged by the slide pivotally at 12 so that the levers have a
motion around the fulcrum p back and forth. In other words they get a circular
reciprocating movement by connection with the rectilinearly reciprocating slide 7.
The several books N (I will now speak of the hooks N because all I say with
reference to them and their appurtenances applies equally well to the hooks N²)
have their shoulders j represented at varying distances from their shoulders i, and
from their points of connection with the needles P, and Figure 5 shows clearly
that these shoulders; in the normal position of the hooks are placed parallel to the
normal position of the lever O when the same is at the beginning of its stroke, and
from this it will be perfectly plain that when a particular hook of the series is
lifted by its needle P so as to carry its shoulder j into the path of the lever O, the
extent of movement imparted to said hook and thereby to the beam M will
depend upon the particular hook that is lifted; for it is plain that, looking at
Figure 5, if the hook which is furthest to the right of that figure be raised, it will
receive a far greater motion by the lever 0 than the hook at the left of that figure,
because the latter is nearer to the fulcrum of the lever than the former, and thus
it is also clear that by this system of needles and hooks, I can, from the lever O
with its definite and invariable movement, obtain strokes of greater or less extent,
or absolute rest for the rack J and screw H. The same remarks apply to the
lower hooks N2, beam L, rack I, and screw G. Each lever O may be a simple
lever and in that case it will be situated immediately above the corresponding
series of hooks N as represented in figure 6 but I have found that in practice it is
better to make it with a sliding face so as to avoid undue friction between it and
the hooks that are. effected by it for the lever, moving in an arc, and the hooks

page_text: moving in a straight line, will have a tendency to cramp on each other, which it
is desirable to overcome. To this end I have provided the lever O (and also the
lever O) with a sliding face s which is parallel with the lever and held in brackets
that project from the lever, and which bears against suitable friction rollers t that
are carried by the lever, so that although sharing in the oscillations of the lever,
this slides will have an independent sliding motion in the direction of its length
and will thus accommodate itself to the contact with the hook while moving the
same. The sliding bars 8 are immediately above the hooks N N° but the levers
002 are not necessarily in the same planes therewith (see figure 3). The
shoulders instead of being at varying distances from the beam M may be in a
line parallel therewith in which case the normal position of the lever O will also
be parallel with the face of beam M. Any kind of lever or series of levers for
moving the hooks N can be employed. The beam M when drawn in one direction
by the lever acting on one of the hooks N, that is to say, towards the needles P,
of course draws the rack J in the same direction, and after the lever O has com-
pleted its stroke in that direction, the beam M can be brought back to its normal
position, either by suitable weights W7 (Figure 6) or by a spring or other suitable
mechanism. In order to guide the beam M during its reciprocating motion and
cause it to maintain its direction, I prefer to provide it with an idle shaft v²
carrying pinions which engage into stationary racks u whereby, as the said
pinions are alike, the steadiness of motion will be ensured.
It remains to describe how each of the racks I and J is shifted laterally to turn
its screw in the desired direction, and here it is proper to state that the screw is
only to be turned by the positive motion of the lever O towards the needles P and
is to remain stationary while said lever makes its back stroke away from the
needles. Hence, the mechanism for controlling the rack must be such that during
the back stroke of the lever O and beam M, the rack will be entirely out of gear,
and during the forward motion of the lever, the rack will or may be in gear on
that side which it is desired to have in gear. Hence, as the position of the rack
must be predetermined for the purpose of the pattern to be produced, it follows
that the Jacquard prism and needles are utilized also for the purpose of adjusting
the racks laterally.
I will now describe how the rack J is to be controlled. The same description
applies to the manner of controlling the rack I.
At that part where the rack J embraces the pinion h of the screw H, it is in turn
embraced by a box w which is a framing with vertical shoulders that embrace the
outer sides of the rack so that when said framing is moved laterally, the rack
will have to follow. This box w is swivelled to the short arm x of an elbow
lever S, which elbow lever has its fulcrum at y at the angle of its long and short
arms. -The long arm of this elbow lever S (see Figure 2) is between two springs d³
and es which if not interfered with as hereinafter stated, will balance it so as to
hold it in the normal position shown in Figure 2, and thereby hold the rack in
the position where it will not engage with the pinion of the screw. The two
springs just named bear at their outer ends against levers T and U respectively.
The lever T has its fulcrum at f³ and connects on the same fulcrum by a clutch
shoulder (see diagram figure 2c) with a link or lever g³ that connects with a jointed
rod h³ which in turn connects with the lever O. The lever U has its fulcrum at 2³
and joins by similar clutch mechanism a link, or lever j³ which also connects to
said rod h³. The clutches are of such character that they cause the links or
levers g³ and 3 to affect the positions of the levers T and U only during the
working stroke of the lever O. During the forward or working stroke of the
lever O, the lever S will be maintained in a deflected position by a pawl or catch
piece n which will drop against its side (see figure 2a and 2b) no matter whether
the lever S be swung to one side or the other, and which will not be lifted out of
the way of the said lever until at the end of the working stroke of the lever O
when a slide o³ which connects with said lever O, will carry a shoulder or
projecting stop o against a projecting arm. x of the spindle w which carries the

page_text: pawl n³ (figure 9) and move such pawl out of the path of the elbow lever S-
allowing the latter to be rebalanced, which it must be at the end of the working
stroke of the lever O for now and during the entire backward stroke of the said
lever, and of the beam M, the rack J must be out of contact with the pinion h, so
that during such backward stroke the embroidering needle will find the frame A
stationary, and during its backward stroke, the long arm of the elbow lever S will
be balanced between the two springs d³ and es. And when the lever O makes its
movement in the direction of the arrow shown in Figure 2, the rod h³ will be
pulled and the links or levers g³ and j swung on their pivots so as to cause them
to slightly move whichever of said levers T and U is out of its transverse position
and thus compress the corresponding spring d³ or e³. The Jacquard needles p²
placed over the end of the card, will move one of two elbow levers Q2 (see Figures
8 and 9) which will move one of two slides R2 and S2 for each beam. The slide R²
engages by an L shaped slot with a projection from a pawl, and the slide S² in
like manner with a pawl m³. These pawls bear against the levers T and U
respectively. That one of the slides R2 S2 which is moved in the direction of the
arrow, figure 8, by the lifting of its Jacquard needle p², will swing and move its
pawl off the lever T or U (whichever it be) so as to release the corresponding
spring ds or es (whichever it be) from pressure without disturbing the other spring,
and then the long arm of the elbow lever S will be subjected to pressure from one
side only, and will move the box w laterally in one direction, and thus carry the
rack into contact with the desired side of the pinion. All this will take place
prior to the beginning of the working stroke of the lever O, so that during that
stroke the rack will be properly engaged. After the slide R² or S2 has moved its
pawl or m³ as just stated, said slide receives a slight upward thrust by a
vertically lifted rod R which stands on an elbow S4 that is swung on its pivot t
by a rotating crank c. on the shaft o (see figure 9) and thereby brings the
engaging pin of the pawl that projects through the L shaped slot, into line with
the horizontal part of said slot, thereby giving a suitable spring u on the spindle
on which the pawl swings, an opportunity of throwing the pawl into the normal
position where it will again stop the lever T or U (whichever it be) as soon as such
lever is again brought into its normal position by the action of the rod h³ on the
links g³ and ³.
-
In Figure 7 is shown the mechanism for locking the two screws G and H and
fixing them in position at the end of each forward stroke of the levers 0 0². This
mechanism consists of two pawls p³ and q³ which are placed in such proximity to
the pinions g and h of the screws G and H respectively that they can be thrown
against the peripheries of said pinions. Both of these pawls are joined to a lever X
whose fulcrum is on the pin y which may be the same pin on which the levers S
vibrate. The lever X abuts against a click which is directly above the pawl or
catch piece n³ and mounted upon the same spindle was the last mentioned pawl,
so that the pawls n³ and 3 will move simultaneously under the influence of the
slide o already stated, and of the slides R2 and S2 as described. The lever X is
between two springs or cushions 83 and t³, both of which are subjected to the
action of the movable link. This link carries an arm us which has an arm or
extension w³. This arm w³ has two shoulders, one at each end bearing against the
spring and respectively, at their outer ends. When the lever O is moved in
the direction of the arrow shown in Figure 2, the outer end of the link j³ will be
moved in the direction of the arrow shown in Figure 7, so as to thereby compress
the spring to and release pressure on the spring 83. At this time, that is to say, when
the lever O begins to move in the direction stated, the lever X is in the position
indicated by dotted lines in Figure 7 and holds the two pawls p³ and q³ away from
the toothed wheels g and respectively. In the dotted position shown in
Figure 7, the lever X is held by the pawl, but nevertheless it is subjected to
greater pressure from the spring on one side than from that on the other. As soon
as the lever O completes its stroke and the slide o strikes the pin x on the
spindle w of the pawl n³ so as to throw the racks out of gear as heretofore

page_text: specified, the pawl is also lifted off the lever X, and the said lever X thereby
brought under the influence of the overpowering spring and deflected into the
position which is shown by full lines in Figure 7, thereby throwing the pawls p³
and q into the toothed wheels g and h and locking the screws in the manner
stated. This mechanism or equivalent mechanism for positively securing the
screws against all motion after the lever O has completed its working stroke,
renders the position of the frame A absolutely fixed and ensures great certainty of
reaching the prescribed design in embroidering. It also ensures for each screw a
rotary movement of one tooth of its pinion, or a multiple thereof. If, by some
defect in the mechanism, a screw should not be turned the very exact extent
required, the locking click p³ or q³ will ensure the final position to be precisely as
required. Were it not for such mechanism for locking the screws, the position of
the frame A might be disturbed accidentally and thus the design intended to be
produced would be more or less marred.
I do not wish to be limited, in regard to the locking of the screws, to the
particular pawl and lever mechanism which I have described, as other means well
known to mechanics might be substituted for pawls such as break straps or the like.
The slides R2 and S² connect likewise with the spindle w of the pawls ³ so as
to lift said pawl off the lever X just before the beginning of every working stroke
of the lever O. Whenever the pawl has been moved either by the slide o³ or by
one of the slides R2 or S2, it immediately thereafter falls back into its normal
position under the influence of a suitable weight or spring 24. The slides R³ and S²
are engaged by an L shaped slot with a pin y that projects from the spindle w³,
so that whenever either of said slides is drawn by its bell crank Q2, it will act, not
only on its pawl 13 (or m³), but also on the pawl ³, and then when such slide Rª
or S2 is lifted by R4, the pins y will come into the lower horizontal part of the
L shaped slot and allow the spring to throw the spindle w and pawl³ back to
their normal positions.
The card being adapted to work on two sets of needles, is shown in Figure 6
to be so constructed as to present two jointed sections to each face of the prism Q.
In other words instead of making each separate section of card as wide as the face
of the prism, I make it half as wide only. This will bring one section under one
set of needles, and the other section of the card under the other set of needles.
The advantage of this division is that a far less number of sections of card will be
required for producing numerous varying combinations and designs.
Having described the nature of the said Invention and the manner of performing
the same,
I declare that what I claim as new and desire to secure by Letters
Patent is..
1st. The slide E having guide a³ combined with the slide F having guide b³, and
combined further with the fabric frame and its connection D and studs a b for
operation substantially as described.
2nd. The method herein described of moving a fabric frame in the required
direction within a plane, which method consists in connecting said frame by two
guides with reciprocating slides carrying said guides respectively, substantially as
described.
3rd. The slide E combined with the screw G, rack I, beam L, hooks N2, lever 0º,
and needles P, substantially as described.
4th. The combination of the fabric-frame with a pair of reciprocating guides for
operation, substantially as herein shown and described.
5th. In jacquard mechanism for regulating the position of the fabric-frame of
an embroidering machine, the combination of Jacquard needles P with series of
hooks N which are engaged by said needles and which have shoulders or contact
faces at varying distances from the beam M they draw, and with the actuating.
lever O which is adapted to engage that one of said hooks which is lifted into its
path, and with said beam M, substantially as described.

page_text: 6th. In Jacquard mechanism having hooks N that are controlled by and
combined with the needles P, their combination with the actuating lever, O moving
on a fulcrum and adapted to impart different digrees of motion to the several
hooks, substantially as specified.
7th. The combination of the fabric-frame with two guides, two slides carrying
said guides, two sets of Jacquard needles and intermediate mechanism between
said needles and said slides, substantially as herein shown and described.
8th. The lever 0 combined with the hooks N and with the needles P, sliding
face piece s, and friction rollers t, substantially as specified.
9th. The hooks N N each having projection i and projection j combined with the
beam M and with the oscillating lever O, and with the needles P, all arranged so
that the projections i shall always be in the rear of the beam M, but only those
projections will be in the path of the lever O which are on the hooks N raised by
the needles, substantially as specified.
10th. The toothed rack J combined with the box w, bell crank lever S, levers T U
springs d³ and e³, and with mechanism substantially as described for moving said
levers S T and U, as specified.
11th. The beam M combined with rack J. and with the slide F, and with
intermediate mechanism, substantially as described, for connecting said beam with
said slide during one movement of said beam, and disconnecting them during the
other movement of said beam, substantially as specified.
12th. The lever O combined with the parts h³, gå³ and ³, levers T U, springs d³
and e³, lever S, box w, rack J, and with the slides R2 S2, pawls 13 and m³, and
device for moving said slides, substantially as described.
13th. In machinery for moving the fabric-frame of an embroidering machine the
combination of said frame with two slides having guides with screws for moving
said slides, with racks for turning said screws, and with mechanism, substantially
as described for imparting motion to said racks, and with mechanism substantially
as described, for adjusting the position laterally of each of said racks, all as and for
the purpose specified.
14th. The combination of the screws G H and their actuating pinions g h with
the pawls p³ and g³, lever X, springs 83 and 3, and pawl, and with mechanism
substantially as described for moving said pawl and for alternately compressing said
springs, as specified.
15th. In machinery for moving the fabric-frame of an embroidering machine,
the combination of said frame with slides having guides with screws for moving
said slides, racks for turning said screws, and with mechanism substantially as
described for locking and determining the position of said screws after every
movement of the racks has been completed substantially as specified.
16th. The fabric-frame of an embroidering machine combined with mechanism,
substantially as described for moving it and for holding it locked after every
adjustment, the locking and moving mechanism being substantially as herein shown
and described.
17th. The beam M combined with the hooks N, rack J, and screw H, and with
mechanism substantially as described for disengaging the rack so as to allow the
beam to move back after every working stroke from the screw without disturbing
the position of the fabric-frame as specified.
18th. The combination of the beam M with the double rack J, pinion h, and
and screw H, and with mechanism substantially as described for shifting said rack
laterally and reversing the rotation of the screw previous to the working stroke
of said beam substantially as specified.
19th. In a machine adapted for two sets of needles, the card Q combined with
the prism Q, the jointed sections of card being of such extent that two will fit each
face of the prism, substantially as and for the purpose specified.
20th. The combination of the hooks N, their set of needles P and cards aº, with 5

page_text: the hooks N2, their set of needles P and separate cards 66, and with mechanism
substantially as described for moving said hooks and through them the fabric-frame,
as set forth.
In Witness whereof I the said Alexander Melville Clark have hereunto set
my hand and seal this fifteenth day of September, A.D. 1882.