Improvements in Shuttle and Picker Checking Apparatus for Looms.
Year: 1889

page_text: Date of Application, 11th Dec., 1889
Complete Specification Left, 27th Aug. 1890-Accepted, 4th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in Shuttle and Picker Checking Apparatus for
Looms.
We DANIEL SANDERSON, of No. 3 Pickles Street, Church, Mechanic, and JOHN
DRAKE, of No. 38 India Street, Accrington Weaver, both in the County of Lancaster
do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in appliances designed for gradually easing
and checking the momentum of the shuttle on its entry into the shuttle box, and
which also acts as a "picker preserver," by forming a buffer against which the
picker is driven by the shuttle on its "boxing" whereby a great saving by reason of
less wear and tear of the shuttle and picker is ensured.
"
According to this our invention, bolted or otherwise fixed to the shuttle box of the
loom is a bracket,. preferably of iron which terminates in two arms forming of a
fork, from the end of each arm, and across the fork extends a rod or spindle which
passes through an eye" in the end of each of the said arms and is secured therein
by set screw. This rod or spindle is parallel with and slightly below the picker
spindle, and carries, a loose collar at one end and at the other end is another collar,
adjustable on the said arm by means of set screw.
Between the two collars above mentioned and on the rod or spindle is a spiral
spring, the loose collar is connected by a strap to a loop of leather, or buffalo hide
which encircles the picker spindle.
.
The action is as follows :-
--
When the shuttle enters the box it comes in contact with the picker which it forces
against the loop of leather or buffalo hide on the picker spindle, the loop in turn
being forced along the spindle, by the strap moves the loose collar along the rod or
spindle, compressing the spiral spring, the resistance of which gradually eases and
stops the shuttle, and forms with the loop and strap a buffer for the picker.
The fixed collar on the rod or spindle is adjustable so that the resisting power of
the spiral spring can be varied and regulated as required.
One of each of the appliances is of course fixed at each end of the loom.
TX
1
1000
WALTER BRIERLEY,
Central Chambers, Halifax, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Shuttle and Picker Checking Apparatus for
Looms.
We, DANIEL SANDERSON, Mechanic of No. 3 Pickles Street, Church, and JOHN
DRAKE, Weaver, of No. 31 Russia Street Accrington, both in the County of
Lancaster 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 :-
Our invention consists of an improvement in appliances for the checking of shuttles
and pickers for looms.
We provide a spiral spring of steel or other suitable metal wire, of suitable
demensions as to the coil, strength and length thereof. This spring we slip loosely
on to a steel or iron spindle, both as shown at S Fig. 1; such spindle is capable of
being firmly held in a horizontal position by suitable stationary brackets, (at C Fig. 1
& 5) one at each end of the spindle; the brackets being affixed by means of screws
to the front of the "slay" at the shuttle box end, and immediately under the metal
ΓΟ

page_text: shuttle guard. We also provide two metal collars K and K' Fig. 1 which are also
shown in section Figs. 2, 3 and 4, these collars we also slip on to the spindle one
near each end thereof, the spiral spring being placed between the said two collars,
and the whole, i.e. collars and spring, between the two stationary brackets
(C Fig. 1).
"
One of these collars must be drilled, tapped, and fitted with a small set screw, as
shewn at Fig. 4, so as to fasten it securely to the spindle, in such position thereon as
to fix the spiral spring at the tension that may be required for the proper check of the
shuttle and picker. The other collar must be provided with a projecting button as
shown in section Fig. 2, or with a short set screw in place thereof (Fig. 3) for the
purpose of attaching one end of a leather strap or band; this collar must fit loosely
on the spindle, so as to always be capable of sliding backward and forward, along the
spindle, such a distance as the tension or laxity of the spiral spring, caused by the
tension or laxity of the leather strap or band, may require; the other end of
the leather strap or band has a hole punched therein, to allow of it being slipped on to
the picker fly spindle" immediately behind the picker, as shown at T Fig. 1.
Such leather strap or band may be composed of two lengths so as to allow of it being
tightened or slackened between the two extremities (when combined) in the usual
manner of all such checking straps or bands. When the apparatus is properly affixed,
the velocity of the shuttle is gradually impeded (and ultimately stopped) from the
moment it touches the picker, by means of the leather strap or band, against which
the picker presses, acting upon the loose collar K Fig. 1, which, when connected, is
thus drawn forward causing compression and greater tension of the spiral spring;
consequently the cop of weft (or even weft on a bobbin) in the shuttle is not near so
subject to disarrangement or spoilation as is often the case with a too sudden stoppage
or jerk of the shuttle, hence it causes less waste in weft. When the shuttle is stopped,
it is held in position, by any of the ordinary "swells," in the shuttle box, until the
picking stick again strikes, and, by reason of the tension of the spiral spring in our
apparatus, the strain on the picking stick in the act of striking is not so great as it
otherwise would be, as the spiral spring aids somewhat in freeing the shuttle at each
successive propulsion. We may make the collars either with or without a countersunk
bore; when made with a countersunk bore they are for the purpose also of receiving
the ends of the spiral spring, holding the same in position on the spindle. Or we may
make the collar somewhat thinner, for half their length, thus forming a shoulder or
bush, so that the ends of the spiral spring may lap on to the collars a little on the
outside.
A pair of the shuttle and picker checking apparatus is required for each loom, on
at each end of the "slay;" the other one, to complete a pair, would have the picker,
leather strap or band, and collars shown at reverse ends in Fig. 1. They are
applicable, and easily fitted to all kinds of existing looms, or for all new looms
whether constructed with stationary or with rising shuttle boxes, more commonly
called "drop boxes."
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1st. The arrangement of the spiral spring, working on a spindle, with a fast and
loose collar thereon, and with a leather strap or band attached to the loose collar at
one end, and to the fly spindle at the other end, all as shown in Fig. I, or any
equivalent arrangement.
2nd. The arrangement of the different pieces of which the apparatus consists as
in Figs. 1, 2, 3, 4 and 5 or their equivalent in principle through differing in
conformity.
Dad thin orth dose of August 1800
DANIEL SANDERSON.
JOHN DRAKE.