An Improved Method of Holding Bobbins or Pirns in Loom Shuttles.
Year: 1894

page_text: Date of Application, 10th Sept., 1894-Accepted, 13th Oct., 1894
COMPLETE SPECIFICATION.
An Improved Method of Holding Bobbins or Pirns in Loom
Shuttles.
JAMES GREGSON of the Firm of Gregson & Monk, Vulcan Iron Works,
Preston; in the County of Lancaster, Machinist and Loom 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 :-
My invention relates to improvements in shuttles for weaving weft or yarn
wound upon bobbins or pirns, these bobbins or pirns are ordinarily held in their
position upon the shuttle tongue by means of a wire or pin inserted into the sides
of the shuttles across the slot below the bobbin or pirn, where there is little
thickness of wood to hold the wire or pin safely, these wires or pins are constantly
working loose and are very liable to come partly out and catch against the reed
not only damaging the same, but having a great tendency to cause the shuttle to
fly out which is dangerous to the workpeople; other methods for holding the
bobbins or pirns are known as clips, but these are not so convenient for the various
sized pirns or bobbins and are also liable to come loose. The object of my
invention is to obviate these drawbacks. The means by which this is accomplished
is as follows:-
In the accompanying drawing
Fig. 1 is a drawing of a shuttle showing my improvement.
Fig. 2 is a drawing of a shuttle showing the bobbin or pirn held by a wire or
pin in the old system.
In Figs. 1 and 2 A is the shuttle tongue, B is the bobbin or pirn, and C is the
heel spring for steading and holding the shuttle tongue in position, this spring I
lengthen and crank up the end as a hook or finger, which operates in the groove of
the bobbin or pirn as shown in Fig. 1. at D. In Fig. 2 you will observe. that the
heel spring C is only used for steading and holding the shuttle tongue and that
the bobbin or pirn is held by a wire or pin E. It will be readily seen that by
lengthening the heel spring C with the part marked D it acts a double purpose,
first by holding the shuttle tongue more steady and firmly, and secondly holds the
bobbin or pirn firmly in position on the shuttle tongue and when the shuttle
tongue is being raised out of the slot of the shuttle, the head of the shuttle tongue
marked A presses against the spring marked C which automatically works the
lengthened part marked D of the spring C out of the groove of the pirn, and thus
the pirn or bobbin is more quickly released. The great advantage of making the
spring in one or more pieces is to do away with the wire or pin or clips which are
liable to come loose and thus lessen the danger of accidents.
My improvement can be applied to existing shuttles by simply exchanging the
old spring C with a new spring with lengthening piece marked D.
I do not confine myself to the precise details I have had occasion to describe or
refer to as I can accomplish the same result by making the spring C with
lengthening piece D in two sections with regulating arrangement.

page_text: 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 :-
The means or method of retaining bobbins or pirns in loom shuttles substantially
as described and illustrated.
Dated this 8th day of September 1894.
JAMES GREGSON.