IMPROVEMENTS IN POWER-LOOM LATHES, AND IN TAKE-UP, FEED, OR PROGRESSIVE MOTIONS FOR POWER-LOOMS AND OTHER MACHINES
Year: 1867

page_text: LETTERS PATENT to William Walton Urquhart and Joseph Lindsay, of
Dundee, in the County of Forfar, North Britain, Engineers, for the
Invention of "IMPROVEMENTS IN POWER-LOOM LATHES, AND IN TAKE-UP,
FEED, OR PROGRESSIVE MOTIONS FOR POWER-LOOMS AND OTHER MACHINES,"
Sealed the 16th August 1867, and dated the 22nd February 1867.
PROVISIONAL SPECIFICATION left by the said William Walton Urquhart
and Joseph Lindsay at the Office of the Commissioners of Patents, with
their Petition, on the 22nd February 1867.
We, WILLIAM WALTON URQUHART and JOSEPH LINDSAY, of Dundee, in the
County of Forfar, North Britain, Engineers, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN POWER-LOOM LATHES, AND IN TAKE-UP,
FEED, OR PROGRESSIVE MOTIONS FOR POWER-LOOMS AND OTHER MACHINES," to be as
follows, that is to say :-
This Invention comprises improvements in the construction of power-loom
lathes and in take-up motions especially designed for power looms, but also
applicable as take-up, feed, or progressive motions for other machines.
The feature of novelty in the construction of the lathe is the making the
lathe bar of plate iron with coverings of wood on the top for the race, and on
the back, for holding the bottom of the reed. The improved lathe is lighter
and stronger, than as hitherto made, and is not affected by the weather. In
making it an iron plate is bent into the form of a hollow beam or bar with
the bottom side open. To give stiffness wooden or iron struts are inserted
between the front and back, and tie bolts are fixed through these struts, and
P

page_text: the reed.
MAGE TO SECU the DACA covering of WOOD WHICH nords the bottom of
The feature of novelty in the improved take-up motion is the application
of a screw gearing with a wheel of the take-up train, and moved longitudinally
or parallel to its axis when taking up by an infinitesimally adjustable lever
action, whilst it is recovered after each stroke by being turned by a weighted
cord or otherwise, so as to screw its way back through the teeth of the wheel
it acts on.
This take-up motion as adapted to a power loom can be adjusted with the
greatest facility to any rate without the intervention of change wheels, and
without the uncertainty of frictional appliances. It is suitable for every
variety of fabric from the coarsest jute bagging to the finest silk or cotton
textures.
In applying the improved details to the power loom as a "positive" take-
up motion the take-up screw is carried by a spindle connected to a take-up
lever, so as to be movable longitudinally thereby; and the lever or another
lever fixed or connected thereto is acted on by a link or connecting rod
reciprocating by the action of a revolving crank or eccentric on the crank
shaft of the loom, or by the action of any other suitably moving part. The
link or connecting rod can be adjusted to act on the lever at any radius, such
adjustment admitting of the infinitesimal variation of the reciprocating stroke
imparted to the screw spindle. The take-up screw has formed on or con-
nected to it a ratchet wheel acted on by a pawl carried by a disc which is
formed in one piece with a pulley or barrel, and a cord or chain acted on by a
weight is applied to the pulley or barrel, so as to tend to turn it in the
direction for screwing back the take-up screw. The weighted cord or chain
is wound up at each stroke by the action of a lever fixed to the take-up lever,
and which has the end of the cord or chain connected to it. The wheel acted
on by the take-up screw is by preference geared to the take-up roller with a
worm and a worm wheel to prevent backward strain. The take-up screw
may be turned when moving backwards by means of a clutch piece formed
with an elongated screw boss working in a stationary nut, and consequently
turning when moved longitudinally. The clutch piece is held without play
between collars on the screw spindle, but the take-up screw has a little play
between its collars, in consequence of which the commencement of the
forward stroke takes the clutch piece out of gear from the screw, whilst the
commencement of the backward stroke puts it into gear therewith.
In order to adapt the take-up motion for the "drag" system the spindle of
the take-up screw is disconnected from the take-up lever, and is fixed by a

page_text: stud or bolt, whilst a spring of suitable strength is applied instead of the
weight herein-before described as used for turning the screw. The action
then consists in the lever connected to the other end of the cord or chain
extending the spring, the reaction of which turns the screw and thereby
effects the take-up.
In applying the details herein-before described as a take-up, feed, or
progressive motion, where a continuous or nearly continuous action is required
two or more screws are used and work at different times, so that there may
be always at least one in action. Where two screws are used they may be
arranged in gear with different wheels, each wheel being geared to the screw
of the other wheel to give such screw the turning motion which alternates
with its longitudinal motion; and the parts of this combination cau be
variously proportioned to each other, either so to give a continuous or nearly
continuous motion, or so as to give an intermittent motion suitable for a loom,
take-up, or the like.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Walton Urquhart and Joseph Lindsay in the Great
Seal Patent Office on the 21st August 1867.
WILLIAM
TO ALL TO WHOM THESE PRESENTS SHALL COME, we,.
WALTON ULQUHART and JOSEPH LINDSAY, of Dundee, in the County of Forfar,
North Britain, Engineers, send greeting.
WHEREAS Her most. Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of February, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirtieth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said William Walton Urquhart and Joseph Lindsay, Her special licence
that we, the said William Walton Urquhart and Joseph Lindsay, our
executors, administrators, and assigns, or such others as we, the said William
Walton Urquhart and Joseph Lindsay, our executors, administrators, and
assigns, should at any time agree with, and no others, from time to time an i
at all times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for
IMPROVEMENTS IN POWER-LOOM LATHES AND IN TAKE-UP, FEED, OR PROGRESSIVE
MOTIONS FOR POWER-LOOMS AND OTHER MACHINES,' upon the condition (amongst
others) that we, the said William Walton Urquhart, and Joseph Lindsay, our

page_text: executors or administrators, by an instrument in writing under our, or one of
our or their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same was to
be performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that we, the said William Walton Urquhart and Joseph
Lindsay, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
ained in and by the following statement in writing, reference being had to
the accompanying Drawings, that is to say:-
Our said Invention comprises improvements in the construction of power-
loom lathes and in take-up motions specially designed for power looms, but
also applicable as take-up, feed, or progressive motions for other machines.
And in order that our said Invention and the manner of performing the
same may be properly understood we have hereunto appended two Sheets of
explanatory Drawings to be herein-after referred to, and representing various
modifications of our improved arrangements. In the said Drawings the same
reference letters and numerals are used to mark the same or like parts in all
the Figures.
The feature of novelty in our improved mode of constructing the loom lathe
is the making of the lathe bar of plate iron with coverings of wood on the top
for the race, and on the back for holding the bottom of the reed. This
improved lathe is lighter and strong than as hitherto made, and is not
affected by the weather. It is shown in cross section in Figure 1, on Sheet 1,
of the Drawings. In making it an iron plate A is bent into the form of a hollow
beam or bar with the bottom side open. To give stiffness wooden or iron
struts B are inserted between the front and back, and tie bolts are fixed
through these struts, and are also made to secure the back covering C of wood,
which holds the bottom of the reed. The top covering of wood for the race D
is fixed on by screws and by gluing. This top covering D may be of leather
or other suitable material instead of wood.
The feature of novelty in our improved take-up motions is the application
of a screw gearing with a wheel of the take-up train, aud moved longitu-
dinally or parallel to its axis when taking up by an infinitesimally adjustable
lever action, whilst it is recovered after each stroke by being turned by a
weighted cord or otherwise, so as to screw its way back through the teeth of
the wheel it acts on. This take-up motion as adapted to a power loom can
be adjusted with the greatest facility to any rate without the intervention of

page_text: suitable for
change wheels and without the uncertainty of frictional appliances. It is
every variety of fabric from the coarsest jute bagging to the finest
silk or cotton textures.
One modification of our improved take-up motion is shown on Sheet 1 of
the Drawings as applied to a power loom, Figure 2 being a sectional plan,
Figure 3 a side elevation, and Figure 4 a front elevation. A portion of the
loom framing F is shown, so that the situation and application of the details
may be obvious, but other well-known parts of the loom are omitted. In this
modification the take-up screw 1 is carried by a spindle 2 connected to a
take-up lever 3, so as to be movable longitudinally thereby, that is in a hori-
zontal direction parallel to the side of the loom. A lever 4 fixed or connected
to the lever 3 is acted on by a link or connecting rod 5, reciprocating by the
action of a revolving crank or eccentric 6 on the crank shaft 7 of the loom
[or by the action of any other suitably moving part]. The link or connecting
rod 5 can be adjusted to act on the lever 4 at any radius, this lever being
formed with a curved slot, at any part of which the joint pin of the link can
be fixed by a screw nut at the back. This arrangement admits of the infini-
tesimal variation of the reciprocating stroke imparted to the screw spindle 2,
and a scale of "shots per inch," for example, is marked on the lever 4 to enable
the adjustment to be made with the greatest facility. The take-up screw 1 has
formed on or connected to it a ratchet wheel 8, acted on by a pawl 9, carried
by a disc 10, which is formed in one piece with a pulley or barrel, and a cord
or chain 11 acted on by a weight 12 is applied to the pulley or barrel 10.so as
to tend to turn it in the direction for screwing back the take up-screw 1. The
weighted cord or chain 11 is wound up at each stroke by the action of a
lever 13 fixed to the take-up lever 3, 4, and which has the end of the cord or
chain connected to it. The wheel 14 acted upon by the take-up screw 1 is
by preference geared to the take-up roller 15 with a worm or screw 16 and
a worm wheel 17 to prevent backward strain.
Our improved motion is capable of conversion to the "drag" system, and
in order to adapt it thereto the spindle 2 of the take-up screw 1 is discon-
nected from the take-up lever 3, and is fixed to the framing F by a stud or
bolt, for which an eye 18 is provided, whilst a spring 19 of suitable strength and
shown in red lines is applied instead of the weight 12 herein-before described
as used for turning the screw. The action then consists in the lever 13 con-
nected to the cord or chain 11 extending the spring 19, the reaction of which
turns the screw 1, and thereby effects the take-up. The arrangement may also
be converted so as to act as a drag take-up by introducing a strong spring in
connection with any of the moving parts. Thus a spiral spring might be inter-

page_text: posed between the take-up screw 1 and an adjustable collar on its spindle 2.
The take-up screw 1 may be turned when moving backwards by means of a
clutch piece formed with an elongated screw boss working in a stationary
nut, and consequently turning when moved longitudinally. The clutch piece
is held without play between collars on the spindle 2, but the take-up screw
has a little play between its collars, in cousequence of which the commence-
ment of the forward stroke takes the clutch piece out of gear. from the
screw, whilst the commencement of the backward stroke puts it into gear
therewith. Two other modes of screwing back the take-up screw 1 suitable
for a power loom are herein-after described.>
In applying the details herein before described as a take-up feed or pro-
gressive motion where a continuous or nearly continuous action is require l
two or more screws are used and work at different times so that there may
be always at least one in action. Where two screws are used they may be
"arranged in gear with different wheels, each wheel being geared to the screw
of the other wheel to give such screw the turning motion which alternates
with its simple longitudinal motion; and this combination can be variously
arranged either so as to give a continuous or nearly continuous motion, or so
as to give an intermittent motion suitable for a loom take-up, or the like.
Amodification of the kind last herein-before indicated is shown as applied
to a loom on Sheet 2 of the Drawings, Figures 5, 6, and 7 being respectively
a sectional plan, a side elevation, and a front elevation. In this modification
the take-up screw 1 is formed in one piece with or has fixed on its elongated
bossa pinion 21, with slightly inclined teeth gearing with a screw or worm 21,
with its axis vertical, and guide i losely in a cylindrical box 23 formod in the
bracket casting 24. The bracket casting 24 is formed with a bearing carrying
the spindle of the wheel 14, with which the take-up screw 1 is in gear, and
on the upper end of the same spindle there is a spur wheel 25 gearing with
a pinion 26 formed in one piece with the screw-22. When the spin lle 2
moves forward the screw 1 bears on the teeth of the wheel 14, and with-
out itself turning turns that wheel, and through the wheels 16, 17, the take-up
roll ŕ 15 At the same time the wheel 25 by acting on the pinion 26 turns
the screw 22, and causes this screw to screw itself up through the teeth of the
pinion 21 of the take-up screw 1. On the spindle 2 beginning to return
backwards the pressure between the screw 1 and wheel 14 is removed, and
the screw' l is thus free to turn on its spindle. The screw 2 being made
heavy for the purpose then causes the screw 1 to turn, and screw its way
through the teeth of the wheel 1 simultaneously with its movement back
wards with the spindle 2. Instead of the screw 22 acting by its weight to

page_text: turn the take-up screw 1 it may be moved positively by a lever 27 formed in
one piece with the lever 4, as shown in Figure 8, such lever 27 having jointed
to it a spindle 28 with the screw 22 loose thereon. As the lever 27 acts
upwards when the spindle 2 moves backwards the helical directions of the
teeth or threads of the wheels 1, 14, 21, 22, have to be opposite to their
directions in the modification shown in Figures 5, 6, 7.
Having thus particularly described our said Invention, and the manner in
which the same is or may be performed, we have to state that we do not
restrict ourselves to the precise details herein described or delineated; but that
what we believe to be novel and original, and claim as the Invention secured
to us by the herein-before in part recited Letters Patent is,―
1. The constructing of aloom lathe of a hollow beam or bar of plate iron with
suitable coverings, and substantially in the manner herein-before described.
And, 2, the actuating of take-up, feed, or progressive movements of looms
and other machines by means of a screw reciprocating parallel to its axis, and
turning at intervals, substantially as herein-before described.
In witness whereof, I, the said Joseph Lindsay, on behalf of the said
William Walton Urquhart and myself, have hereunto set my hand
and seal, this Nineteenth day of August, in the year of our Lord One
thousand eight hundred and sixty-seven.
5
Сл
Witness,
EDMUND HUNT,
Patent Agent,
Glasgow.
JOSEPH LINDSAY. (L.S.)