Improvements in Drop Box and Take up Mechanism of Looms.
Year: 1889

page_text: Date of Application, 29th Jan., 1889
Complete Specification Left, 16th July, 1889-Accepted, 7th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in Drop Box and Take up Mechanism of Looms.
I, WRIGHT SHAW of Stockport Road, Bredbury in the County of Chester,
Machine maker, do hereby declare the nature of this invention to be as follows:—
The principal object of this invention is to simplify and render more convenient
and efficient, the construction of looms for weaving, which formed the subject of
Letters Patent granted to me No. 2219 dated 14th July A.D. 1868 and No. 7073
dated 1st May A.D. 1884; part of my invention is however applicable to other
kinds of looms.
In the first place instead of actuating the cylinder bracket by means of a spring
lever and a short shaft carrying an arm connected to the said bracket by a rod or
link as hitherto, I dispense with the said shaft which was inconveniently situated
below the warp beam and I connect the said bracket directly with a cam or excentric
on the tappet shaft.
When a grooved cam is used I bring down the cranked end of the lever to which
the cylinder bracket is fixed past the said tappet shaft, and I mount the bowl which
works in the grooved cam upon this end of the lever in a sliding bracket which is so
held by a spring that it can yield when the bracket is required not to beat up or only
to beat up part of its stroke. To the end of the aforesaid cranked lever is attached
a sliding bar, which works to and fro in a horizontal direction as the cam moves the
lever. Upon this bar is a stop or projection which, when the cylinder-bracket is
required to beat up passes the end of a transversely placed locking bar or rod situated
by preference close to the bottom front rail of the loom. When the cylinder is
required to cease its action, this transverse locking bar or rod is caused to slide
forwards by means of a spring handle, and (by coming in front of the projection on
the first-named sliding bar) to lock the cylinder bracket lever and stop the action
of the cylinder.
When an excentric is employed on the tappet shaft to actuate the cylinder, the
clip of the said excentric is connected by a suitable rod or link to the end of the
cylinder bracket lever by a suitable spring connection which will yield when
the motion of the cylinder is arrested.
To the end of the said cylinder bracket lever is attached an arm or projection
extending downwards so that a catch thereon will rise and fall with the said lever
in front of a sliding locking rod or bar, which acts and is worked in a similar
manner to the action of the locking rod or bar above-described.
"
In order to obtain an additional throw by means of the central holes in the cards
and peg or rod acted on by the pattern cylinder, and thus obtain a four-box-lift,"
I cut the said holes of two sizes as required and I form the centre peg or rod of
two diameters, the smaller part being at the extremity. Thus if a blank card is
presented to the peg or rod it will actuate the same as usual, and if a card with a
small central hole is on the cylinder, it will move the peg part way only as the
shoulder formed by the enlarged diameter of the said peg or rod cannot pass through
the small holes, although it is of such a size that it will pass through the larger
holes.
On the tappet shaft I mount three cams, one, as usual, for the single lift, and the

page_text: other two, by preference, cast together and moved into or out of working position,
as required, by the fork at the end of the tube which is acted upon as usual by the
before named central peg or rod, the incline thereon being of course so formed as to
bring one or other of the cams beneath the bowl on the 'boot-jack' lever. Upon
the boss of this double cam I cast or fix projections which form grooves part way
round the said boss and I mount a suitable catch or bolt on the loom side which fits
into one or other of these grooves, and when the position of the double cam is
determined by the forked lever this catch or bolt retains it there until the bowl on
the 'boot-jack' lever has reached its lowest position and I thus avoid all jumping or
sudden dropping of the said lever from one cam to another which is especially liable
to occur when a four-box lift is required. In case the catch bolt should come
against one of the projecting sides of the grooves I so mount it that it can yield
slightly and I bevel its end and the ends of the said projecting sides of the grooves
to ensure the entry of the bolt or catch into the grooves.
For a "
four-box lift" instead of using the spring as marked x, y, z upon Fig. 2
of the drawings accompanying the Specification of Letters Patent No. 7073
A.D. 1884, I form a double projection on the 'boot-jack' lever above which the
spring is moved according as a three shuttle lift or a four shuttle lift is required;
this will cause the "boot-jack" lever to meet the spring sooner for the greater
lift.
For the single lift the spring is moved out of the way of the said lever as it is
not required.
Another part of my invention relates to the motion which locks the shuttle box
in position when raised or depressed by the "boot-jack." This motion or apparatus
consists of a vertical spring bolt or catch which takes into one of a number of
notches formed in a disc which revolves with the pinion actuated by the said 'boot-
jack.' I fix or form upon the upper end of the said bolt or catch a suitable
hook-shaped plate which (when the bolt is raised by the "boot-jack ") comes into such
a position that a plate (or other suitable piece) projecting from the lathe sword will
come beneath it, and (for a time) lock it in the raised position and prevent the
spring bolt from bearing against the said disc until the latter has been almost
completely acted upon by the 'boot-jack' when the bolt will be released to lock the
shuttle-box.
Thus the said bolt or catch will be prevented from rattling over the notches of the
disc as it is rotated..
I propose also to weight the cloth-beam in the following manner. I connect the
said beam by a suitable link to a cord strap or other equivalent which passes onco
twice (or more times) round a fixed drum bar or pin of suitable diameter; the other
end of this cord is attached to a small weight and by increasing the number of turns
or coils of the cord round the said drum bar or pin the action of the weight can
be greatly increased, and the use of the large weights and brackets hitherto employed
is dispensed with.
The cord, strap, chain or other equivalent may be used by passing it round the
"glass-roller" or other convenient part of the loom.
Dated this 28th day of January 1889.
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant.
.
COMPLETE SPECIFICATION (AMENDED).
Improvements in Drop Box and Take up Mechanism of Looms.
I WRIGHT SHAW of Stockport Road Bredbury in the County of Chester
Machine maker do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :—
The principal object of this invention is to simplify and render more convenient
and efficient the construction of looms for weaving which formed the subject of

page_text: Letters Patent granted to me No. 2219 dated 14th July A.D. 1868 and No. 7073
dated 1st May A.D. 1884; part of my invention is however applicable to other
kinds of looms:
The nature of my invention will be readily understood on reference to the
two accompanying sheets of drawings and the following explanation thereof.
Fig. 1 is a side elevation of so much of a loom as is necessary to illustrate my
invention. Fig. 2 is a sectional plan view of part of the same, the section being
taken through about the line X X on Fig. 1. the cylinder bracket being removed.
Fig. 3. is a similar view the section being taken at about the line Y. Y in Fig. 1.
Fig. 4 is a detached elevation of the cylinder bracket and cards hereafter described.
Figs. 4 5. 6. 7. 8. 9 and 10 are detached views hereafter more particularly
described.
In the first place instead of actuating the cylinder bracket by means of a spring,
lever and a short shaft carrying an arm connected to the said bracket by a rod or
link as hitherto I dispense with the said shaft which was inconveniently situated
below the warp beam and I connect the said bracket directly with a cam or excentric
fixed on the tappet shaft outside the framing of the loom.
When a grooved cam is used (see Figs. 1. 2. 3. 4. 4 and 8) I bring down the
cranked end of a lever a to which the cylinder bracket b is fixed, past the said
tappet shaft c and 1 mount the bowl a* which works in the grooved cam cx upon
this end of the lever a in a sliding bracket d (see also detached sectional view
Fig. 8) which is so hold by a spring d* that it can yield when the bracket b is
required not to beat up or only beat up part of its stroke.
To the end of the aforesaid cranked lever a is attached a sliding bar e which
works to and fro in a horizontal direction as the cam cx moves the lever a (see
Figs. 4 and 4). Upon this bar is a stop or projection ex which when the cylinder
bracket is required to beat up passes the end of a transversely placed locking bar
or rode situated by preference close to the bottom front rail e³ of the loom.
When the cylinder 6x is required to cease its action this transverse locking bar
or rod e¹ is caused to slide forwards by means of a suitable connection with the
ordinary spring handle of the loom and (by coming in front of the projection ex on
the first named sliding bar e) to lock the cylinder bracket lever a and stop the action
of the cylinder 6*.
When an excentric ex is employed on the tappet shaft c to actuate the cylinder 6x
(see Figs. 5 and 6 sheet 2) the clip c¹ of the said excentric ex is connected by a
suitable rod or link to the end of the cylinder bracket lever a by a suitable spring
connection which will yield when the motion of the cylinder 6x is arrested.
The spring connection shown on the drawings Figs. 5 and 6 consists of the
spring a fixed to the lever a and bearing against a projection on the end of the
rod or link which is also provided with a slot in which the pin a³ works.
To the end of the said cylinder bracket lever a is also attached an arm or
projection e extending downwards so that its end ex or a catch thereon will rise and
fall with the said lever a in front of a sliding locking rod or bar e provided with
a projection e which acts and is worked in a similar manner to the action of the
locking rod or bar e¹ above described.
In order to obtain an additional throw by means of the central holes in the cards f
" four-box-
and peg or rod g acted on by the pattern cylinder 6x, and thus obtain a
lift, cut the said holes of two sizes as required and I form the centre peg or
rod of two diameters (see detached plan view Fig. 7) the smaller part being at
the extremity.
Thus if a blank card is presented to the peg or rod it will actuate the same in the
usual way, and if a card with a small central hole is on the cylinder 6x it will move
the peg 9 part way only as the shoulder formed by the enlarged diameter of the said
peg or rod g cannot pass through the small holes, although it is of such a size that it
will pass through the larger holes.
On the tappet shaft c (see Fig. 2) I mount three cams one h as usual for the single
lift and the other two and .& by preference, cast together, and moved into or out of

page_text: working position as required, by the fork at the end of the tube m which is acted
upon as usual by the before named central peg or rod 9, the incline g* thereon (see
Fig. 7) being of course so formed as to bring one or other of the cams i ork heneath
the bowl n on the "boot jack" lever o.
Upon the boss of this double cami, k I cast or fix projections shown at * Fig. 2
which forms grooves part way round the said boss and I mount a suitable catch or
bolt p on the loom side which fits into one or other of these grooves and when the
position of the double cam i, k is determined by the forked lever / this catch or bolt p
retains it there until the bowl n on the "boot-jack" lever o has reached its lowest
position, and I thus avoid all jumping or sudden dropping of the said lever o from
one cam to another which is especially liable to occur when a "four-box-lift" is
required. In case the catch bolt p should come against one of the projecting sides of
the grooves I so mount it that it can yield slightly by means of the spring p* and I
bevil its end and the ends of the said projecting sides of the grooves to ensure the
entry of the bolt or catch p into the grooves.
For a four box lift instead of using the spring as marked x, y z upon Fig. 2 of the
drawings accompanying the Specification of Letters Patent, No. 7073 A.D. 1884 I
form or fix a suitable projection g on the "boot-jack-lever" above which the spring r
is moved if a three shuttle lift is required; this will cause the "boot-jack" lever o to
meet the spring rather sooner for the greatest lift; as the difference between the
lifts of the cams i and k at this point of the lever is greater than the height of the
projection g.
For a four shuttle lift the spring will be moved away from the projection q
above the lever o (or above a smaller projection of suitable height thereon.
For the single lift the spring r is not reached by the said lever as it is not
required.
Another part of my invention relates to the motion which locks the shuttle box in
position when raised or depressed by the "boot-jack." This motion or apparatus
consists of a vertical spring bolt or catch a (see Figs. 9 and 10 sheet 2) which takes
into one of a number of notches formed in a disc t, which revolves with the pinion u
actuated by the said "boot-jack v."
I fix or form upon the upper end of the said bolt or catch s, a suitable hook
shaped plate which (when the bolts is raised by the "boot-jack" v) comes into
such a position that a plate ³ (or other suitable piece) projecting from the lathe
swords, will come beneath it, and (for a time) lock it in the raised position and
prevent the spring bolts from bearing against the said disc t until the latter has been
almost completely acted upon by the "hoot-jack
23 when the bolts will be released
to lock the shuttle-box.
Thus the said bolt or catch s will be prevented from rattling over the notches of the
disc as it is rotated.
When the spring bolt has dropped into one of the notches on the disc t the
underside of the piece, is brought over the other end of the plates and locks
the bolt in position, s2, and s¹ being provided with incliness, and as shown at
Fig. 9, and the former, being so mounted as to be capable of a slight yielding
action in case it should come in contact with the inclines before the bolts is in the
notch.
I propose also to weight the cloth beam in the following manner (see Fig. 1.
sheet 1 and Fig. 5 sheet 2).
I connect the said beam 1c- at each side of the loom by a suitable link (such for
example as the spring fastening a shown) to a cord y, strup, chain, or other equivalent,
which passes once, twice, (or more times)-over, under or round a fixed drum, bar
or pin-z-of suitable diameter or other equivalent fixture which may be either plain
or grooved the other end of this cord y is attached to a small weight y* and by
increasing the number of turns or coils of the cord y round the said drum, bar or
pin or other equivalent the friction caused by the action of the weight can be
greatly increased, and the use of the large weights and brackets hitherto employed
is dispensed with.

page_text: The cord, strap, chain or other equivalent y may be used by passing it over or
round the glass roller" or emery roller, or the gudgeon thereof (see Fig. 5) or
other convenient part or parts of the loom, and it may in some cases be provided
with a spring or springs in place of the weight y*, or other means may be adopted
for applying the frictional resistance to the cord strap chain or its equivalent.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
First. The combination of the cylinder bracket and lever connected directly with
a cam or excentric on the tappet shaft outside of the loom framing by a spring
connection and locking mechanism substantially as hereinbefore described and
illustrated by the drawings annexed.
Secondly. The combination with the cards of the pattern chain provided with holes
of different sizes as hereinbefore described of a rod or peg (in connection with the
movable cams on the tappet shaft) provided with a shoulder or enlargement which
will pass only through the larger boles in the said cards and with an incline (or
equivalent means) so formed as to cause one or other of the cams to be set in working
position according to the size of hole in the card presented to the rod or peg,
substantially as and for the purpose hereinbefore described.
Thirdly. The combination with the sliding cam or cams on the tappet shaft of the
partially grooved boss and locking catch, or bolt for maintaining the cam in position
beneath the boot jack lever until the said cam has brought the said lever to its
lowest position substantially as hereinbefore described and illustrated by the
accompanying drawings.
Fourthly. The combination with the boot jack lever of a projection so situated and
formed as to act against a spring which is moved above it so as to check the "boot
jack" lever sooner or later according to the lift thereof substantially as and for the
purpose herein before described.
Fifthly. The combination with the spring bolt and notched disc which locks the
shuttle-box in position (as herein before described) of a hook shaped plate or similar
device on the said bolt and a catch or projection upon the lathe sword for holding
the bolt away from the said notched disc while the latter is being moved by the
"boot-jack "substantially as herein before described and illustrated by the annexed
drawings.
Sixthly. The means for weighting the cloth beam or roller by the application of
frictional resistance consisting of the cord, strap, chain (or its equivalent) provided
with a weight spring or other means for producing the said frictional resistance, and
passing once twice or more times over under or, round a drum or other convenient
fixture or fixtures attached to the loom frame or round the glass or emery roller or
other equivalent moving part substantially as herein befere described.
noted this 13th dov or
fad this 13th day of
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant.