Improvements in or connected with Shuttles for Looms.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Shuttles for Looms.
I, FREDERIC VYVYAN MITCHELL, of the Firm of Mitchell and Sons, of Killinghall
Mills, Ripley, in the County of York, Shuttle Makers, do hereby declare the
nature of this invention to be as follows:-
This invention relates to the shuttles of looms, and the object is to so construct
and arrange the spindles of the said shuttles that the bobbins which they carry
are more readily fitted into or removed from position than heretofore, whilst at
the same time the wear on the interior of the bobbins is considerably reduced.
According to my invention, I employ a spindle which is actuated by the ordinary
knife spring, and on the face of the spindle I attach a flat spring the free end
of which terminates near the fulcrum of the spindle. The end of the spring is
provided with a stud which passes through an aperture in the spindle head and
projects to the opposite side, in such a manner that the head of the stud is pressed
back by the pressure of the knife spring on the closing down of the spindle,
thus expanding the flat spring and securely holding the bobbin. On the lifting
of the spindle the stud is released thus loosening the flat spring, and when the
spindle is fully open the said flat spring is held against the seat of the spindle
and so kept close to the spindle whilst the bobbin is changed.
Doted the 5th day of A 1000
BREWER & SON,
London and Leeds, Agents for the Applicant.
Improvements in or connected with Shuttles for Looms.
I, FREDERIC VYVYAN MITCHELL, of the Firm of Mitchell and Sons, of Killinghall
Mills, Ripley, in the County of York, Shuttle Makers, 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:-
This invention relates to the shuttles of looms, and my object is to so construct
and arrange the spindles of the said shuttles that the bobbins which they carry
are more readily fitted into or removed from position than heretofore, whilst at
the same time the wear on the interior of the bobbins is considerably reduced.
The great wear incidental to the interior of the bobbins, when employing
bobbin spindles as commonly constructed, is caused by the projecting end-piece
formed upon the upper surface and the retaining spring located along the lower
surface of the spindle, which spring always tends to expand, no provision being
P 77

page_text: made to withdraw the pressure of the spring while pulling the bobbin off or
while placing it into position.
In order that my invention may be readily understood, I will describe same
with reference to the accompanying drawing, in which Figure 1 illustrates in
sectional elevation a shuttle fitted with my improvements, showing a bobbin in
position with the spindle shut down; and Figure is also a sectional elevation
showing the position of the parts with the spindle open.
According to my invention the shuttle A is fitted with a bobbin spindle B
carried upon a pivot C, which latter passes through the head B¹ of the spindle B.
The spindle B is acted upon by an ordinary knife spring 1 (hereinafter called the
locking-spring), by which latter it is retained in its closed and opened positions ;
and the locking-spring D also tends to close down the spindle B, after it has
been started or moved from its full open position. On the upper face of the
spindle B, I attach a spring E, the free end of which terminates near the
pivot C of the spindle B, and is formed at that end with a stud pin E', which
passes through an aperture in the head B¹, and is capable of projecting on the
underside of the head, in such a manner, that, upon the spindle B being closed
down the stud pin E¹ is pressed back by the pressure of the locking-spring D,
whereby the spring E is expanded and securely holds the bobbin in position as
illustrated at Figure 1, longitudinal displacement of the bobbin being prevented
by a projecting end piece 12 formed on the upper side of the spindle B.
Upon lifting the spindle B, the stud pin E is free to pass through the aper-
ture in the head B¹, the spring E closing down upon the upper face of the
spindle B and bearing close against the spindle when the latter is opened to its
full extent as illustrated at Figure 2, and the bobbin which is now no longer
held by the spring E, may be removed.
In order to ensure the complete closure of the spring E, I provide a stop-pin F
against which the said spring bears when the spindle B is open to its full extent,
the stop-pin F also acting to limit the outward movement of the spindle B.
The above described construction of the spindle B not only greatly facilitates
the placing on and removal of the bobbin, but the smooth under surface of the
said spindle B also forms a guiding surface against which the bobbin, in being
removed or placed into position, may bear, and consequently the wear incidental
to friction is reduced to a minimum.
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:
1. In shuttles for looms, the bobbin spindle having a spring and an end pro-
jecting piece upon its upper surface and a smooth guiding under surface, the said
spindle being so pivotted and acted upon by a locking spring, that upon its being
closed down, the spring upon the upper surface of the bobbin spindle is expanded,
and when opened the spring closes down upon the upper surface of the spindle,
substantially as and for the purposes herein set forth.
2. The general arrangement, construction, and combination of the various parts
forming my improvements in or connected with shuttles for looms, substantially
as and for the purposes herein described and illustrated, in the accompanying
drawings.
T
AD 1000
BREWER & SON,
London and Leeds, Agents for the Applicant.