IMPROVEMENTS IN SHUTTLES FOR WEAVING
Year: 1878

page_text: LETTERS PATENT to John Greenwood, of Huddersfield, in the County of York,
Shuttle Maker, for the Invention of "IMPROVEMENTS IN SHUTTLES FOR
WEAVING."
Sealed the 7th May 1878, and dated the 2nd March 1878.
$
PROVISIONAL SPECIFICATION left by the said John Greenwood at the
Office of the Commissioners of Patents on the 2nd March 1878.
JOHN GREENWOOD, of Huddersfield, in the County of York, Shuttle Maker.
IMPROVEMENTS IN SHUTTLES FOR WEAVING."
The object of my Invention is to arrange the pullies for carrying the shuttles
used for weaving blankets or heavy cloth goods in such a manner that the portions
of the shuttle where the ordinary wheel plates are attached are not so liable to
break as is the case when secured in the ordinary manner; also to so arrange the
pullies that the same will not shake loose by the action of the pickers striking the
shuttle.
I accomplish my object in the following manner:-To the bottom or solid
part of the shuttle, at each end of the same, I secure a plate having a projecting
boss, which is mortised into the shuttle; through this boss I bore a hole transversely
to the shuttle which forms the journal for the pulley axle to work in, and thus I
dispense with the ordinary wheel plates attached to the sides of the shuttles.
I form the pullies of solid metal of light section, and thus dispense with the use of
pins for securing the ordinary metal hoops to the circumference of the common
wood pullies.
I secure the pullies on the axle as follows:-One of the pullies I form solid with
the axle, and the other pulley is secured on the axle by means of a nut, which is
screwed tight against a pin placed in a groove cut through the screwed end of the
axle, such a distance from the end that the pulley when in position is quite free to
revolve, and when the shuttle travels across the loom the pulley will revolve
against the pin which forms a washer and protects the nut from unscrewing off
the axle.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Greenwood in the Great Seal Patent Office on the 31st August
1878.
JOHN GREENWOOD, of Huddersfield, in the County of York, Shuttle Maker.
"IMPROVEMENT IN SHUTTLES FOR WEAVING."
The object of my Invention is to arrange the pullies for carrying shuttles used
for weaving blankets or heavy cloth and other goods, in the manufacture of which
shuttles with pullies are used in such a manner that the portions of the shuttle
where the ordinary wheel plates are attached are not so liable to break as is the
case when secured in the ordinary manner; also to so arrange the pullies that the
same will not shake loose by the action of the pickers striking the shuttle, or in
cases where metal or the ordinary wooden pullies are used so that the axle is not
liable to work loose.
I accomplish my object in the following, manner:-To the bottom or solid part of
the shuttle, at each end of the same, I secure a plate having a projecting boss,
which is mortised into the shuttle; through this boss I bore a hole transversely to
the shuttle which forms the journal for the pulley axle to work in, and thus I dis-
pense with the ordinary wheel plates attached to the sides of the shuttles.
I form the pullies of solid metal of light section, and thus dispense with the
use of pins for securing the ordinary metal hoops to the circumference of the
common wood pullies, and when the liability of the axle to work loose in cases
where metal or the ordinary wood pullies have been used.
I secure the pullies on the axle as follows:-One of the pullies I form solid with
the axle, and the other pulley is secured on the axle by means of a nut which is
screwed tight against a pin placed in a groove cut through the screwed end of the
axle such a distance from the end that the pulley, when in position, is quite free to
revolve, and when the shuttle travels across the loom the pulley will revolve against
the pin which forms a washer and protect the nut from unscrewing off the axle.
Or the pulley may be secured on the axle in a modified mauner, as follows:-The
pulley is screwed on the axle tight against a collar formed thereon, and is held in
position by means of a nut, which is screwed tight against a pin placed in a groove
cut through the screwed end of the axle, and thus the pulley is kept in position
and prevented from unscrewing and becoming loose.
Another modified method of securing the pullies together is by means of two
bushes which act as distance pieces placed between the pullies; these bushes are
bored the same diameter in the hole as the pullies, and a pin or bolt fitting the
same is passed through the pullies and bushes, and secured therein by a nut, by
which means the same are drawn together; the circumference of the bushes fits
into the hole through the projecting snug of the journal plate, and thus forms the
axle of the pullies.
In order to enable my improvements to be better understood I will proceed to
more particularly describe the same by reference to the accompanying Drawings,
in which,―
Figure 1 represents the bottom or under side of a shuttle having my improved
pullies and journal plates applied; Figure 2 is a side elevation of the same.
Figure 3 is a side elevation of my improved journal plate; Figure 4 is a plan of
the same looking in the direction of the arrow.
"
Figure 5 is a section through the centre of the pullies and axle, one of the pullies
and axle being made of one piece of metal; Figure 6 is a side view of the
same.
Figure 7 is a modification shewing the pullies, bushes, and axle pin in section.
Figure 8 is a side view shewing the nut for securing the pullies together.
In all the Figures similar letters represent similar parts.
The letter A indicates the body part of the shuttle, at each end of which I
mortise a recess for the reception of the pullies, and my improved journal plates

page_text: B, B, which are secured therein by means of screws; on the sides of the plates B
that are inserted into the shuttle I form a projecting boss or snug C, through which
I bore hole D; this hole forms the journal for the pulley axle to work in; on the
same side of the journal plates, as described, I form two stops E, these are fitted
tightly between the ends of the recess before mentioned, and thus act as a stay,
and take the strain from off the screws.
Figure 5 is a section of my improved pullies and axle combined; the pulley F
and axle G are formed of one piece of metal; the pulley F¹ is secured in position on
the axle by means of nut H, which is screwed tight against a pin placed in groove M ;
this pin acts as a washer, and leaves the pulley F1 free to revolve.
The arrangement for securing the pulley F' may be modified by screwing the
pulley F on the axle G against a collar or shoulder, and the pulley F¹ is held in
position by means of nut H that is screwed against a pin placed in groove M; the
groove in this case is cut below the level of the face of the pulley at J, and thus the
pin is pressed against the face of the pulley by the nut H, by which means the
pulley is prevented from shaking loose.
Figure 7 is a section shewing a modification of my improved pullies and axle ;
between the pullies F, F, I place two bushes K, K; these bushes fit the bolt or pin G
and hole C in the journal plate; the said bushes are hardened or tempered, by
which means the same are more durable.
Having thus described my said improvements, and the means I am acquainted
with for carrying the same into effect, I would have it understood that I do not
confine myself to the precise details shewn and described, as these may be varied
without departing from the character of my Invention, but what I believe to be
novel and original, and claim as the Invention secured to me by the herein-before
in part recited Letters Patent is,--
The combination of the axle and pullies, and the means employed for securing
the same together, substantially in and for the purpose shewn and described.
The arrangement of a journal plate for carrying the axle between the pullies,
substantially for the purpose shewn and described.
In witness whereof, I, the said John Greenwood, have hereunto set my hand
and seal, this Twenty-seventh day of August, in the year of our Lord One
thousand eight hundred and seventy-eight.
Signed and sealed in the
presence of
WILLIAM WAUGH.
JOHN GREENWOOD. (L.S.)