Improvements in Shuttle Guards for Looms.
Year: 1897

page_text: Improvements in Shuttle Guards for Looms.
I, JOHN GRAYSON, of 2, MacDonald's Lane, Corporation Street, Manchester, in
the County of Lancaster, Machinist, do hereby declare the nature of this invention
to be as follows:-
This invention relates to that class of shuttle guards for looms which consist
principally of a cranked rod mounted in bearings in front of the slay cap and
adapted to cover the path of the shuttle when the same is traversing.
The object of my invention is chiefly to provide means for automatically locking
the said shuttle guard in its working position and thus render same more reliable
than hitherto.
To this end I secure to the slay cap next to one of the cranked parts of the
guard a bracket having a projection formed with an incline and groove-like
recess.
Around one of the ends which forms the pivot for the guard I employ a spiral
spring, adapted to draw the aforesaid cranked part against the projection of the
said bracket and thus cause the said cranked part to enter the said recess when
the guard has been dropped into its working position through the momentum of
the slay.
In some cases I attach to the end of the shuttle guard opposite to the aforesaid
spring, a cord or band which I suitably guide and connect to the strap fork lever
of the loom so as to cause the guard to be raised automatically when the loom
stops, or the said cord or band may be connected to a treadle, operated by the
foot of the weaver.
.
According to another form of my invention I employ a bracket having a curved
projection adapted to receive the said cranked part through the momentum of
the slay so as to retain the guard in its working position by the aforesaid spring,
but yielding to slight inward pressure and thus prevent the trapping of the fingers.
Dated this 24th day of August, 1897.
F. BOSSHARDT & Co.,
Agents to Applicant.

page_text: !
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention relates to that class of shuttle guards for looms which consist
principally of a cranked rod mounted in bearings in front of the slay cap and
adapted to cover the path of the shuttle when the same is traversing.
The object of my invention is chiefly to provide means for automatically locking
the said shuttle guard in its working position and thus render same more reliable
than hitherto and also more easy in manipulation.
And in order that my invention may be more fully understood I have caused
to be appended hereunto one sheet of drawings marked with letters of reference
indicating like part in the various figures.
Figs. 1, 1, 3, 3* are front views, Figs. 2, 2*, 4, 4* sectional end views respec-
tively, Fig. 5 a plan of the middle part of Fig. 3, and Fig. 1 a modification of
Figs. 1 & 2 of various forms of my improved shuttle guard, the dotted lines
indicating the position of the guard when out of use and the full lines when in
use
"
In carrying out my invention and referring to Figs. 1 & 2, I secure to the
slay cap a next to one of the cranked parts of the guard, say b, a-bracket c having
a projection c¹ formed with an incline e² and groove-like recess in the said
incline which forms a shoulder.
The said incline or face of the bracket c¹ extends right back to the slay cap
and permits of bringing the guard out of use either by lifting it up or pressing
it inwards against the slay cap, as shown in dotted lines in Figs. 2 & 2.
Around one of the ends which forms the pivot for the guard, say the pivot b₁,
I employ a spiral spring d adapted to draw the cranked part against the
.projection and thus cause it to enter the recess and lock, the guard in its
working position (see full lines) when brought into the same through the
momentum of the slay.
In some cases I attach to the end of the shuttle guard opposite to the aforesaid
spring, a cord or band e which I suitably guide and connect to the fork lever
or other suitable part of the loom so as to cause the guard to be raised automatically
when the loom stops, or the said cord or band may be connected to a treadle,
operated by the foot at will of the weaver.
Referring to Figs. 3 & 4, according to another form of my invention. I employ
.a bracket c having a curved projection c¹ against which the cranked part 6 of the
guard is drawn by the spring d and which forms a shoulder adapted to lock the
guard in its working position (see full lines) when brought into the same through
the momentum of the slay but yielding to slight inward pressure and thus prevent
the trapping of the fingers.
According to another form of my invention I form the projection c¹ and the
middle bearing of the guard in one piece, as shown in Figs. 1, 2, 3, 4*, which
simplifies and renders the guard cheaper and also steadier in action.
In Figs. 1 & 2 the incline is extended in semi-circular fashion both ends
meeting the slay cap so that the cranked part b.never leaves the incline c² and is
thus also retained in position out of use. In this case the aforesaid groove-like
recess may be dispensed with and the incline formed with a shoulder c³, as
shown in Fig. 1.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:-
1st. In a shuttle guard of the type hereinbefore specified, in combination with
the cranked part b a projection on the slay cap a formed with an incline c
having a groove-like recess or shoulder the said incline permitting the guard
to be raised or pressed inwards out of use and the. said recess or, shoulder being
adapted to lock the guard in its working position, all substantially as set forth..

page_text: 2nd. In a shuttle guard of the type hereinbefore specified, in combination with
the cranked part b, a projection c¹ on the slay cap a having a curved face adapted
to form a shoulder for the cranked part band lock the guard in its working
position but being sensitive to inward pressure, all substantially as and for the
purpose set forth.
1007
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.