Improvements in the Shuttle-box Motion of Looms for Weaving.
Year: 1890

page_text: Date of Application, 5th May, 1890
Complete Specification Left, 11th July, 1890—Accepted, 16th Aug., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Shuttle-box Motion of Looms for Weaving.
We FREDERICK SOHOLES, Manufacturer and THOMAS WALKDEN Loom Overlooker
both of Eton Hill Mill, Radcliffe in the County of Lancaster do hereby declare the
nature of this invention to be as follows:-
The object of this invention is so to modify the motion known as Whitesmith's or
the "Scotch "motion for actuating the shuttles boxes that it can be applied to under-
pick looms.
The ordinary Whitesmiths or Scotch motion is constructed with an excentric and a
slotted or grooved plate both acting (as is well known) upon a loose ring on the
excentric in order to raise or lower the shuttle boxes. The excentrics and the plate
are driven by pinions in gear with toothed wheels provided with cogs or pegs. These
cogs or pegs are kept in position by pivotted plates which also serve as rests to support
the hooked onds of catch levers which are mounted on a crank or excentric on the
tappet shaft and so move to and fro and when required are lowered by the said
pivotted plates so that they can, by moving the wheels, govern the position of the
shuttle box.
All this gearing has hitherto been placed near to the floor at one side of the loom
and consequently has not been applicable to underpick looms where the picking
motion occupies the same position.
According to our invention however we mount the said excentric motion the
gearing and the pivotted plates on the upper part of the loom side or framing above
the crank shaft and out of the way of the picking motion and we mount the hooked
catch levers above described upon or near one end of an upright rocking lever
carried by a bracket fixed to the loom framing. The other end of this rocking lever
we connect by a link (or otherwise) to a crank, excentric, cam, or equivalent device
actuated by a spur wheel gearing with a pinion on the crank shaft so that it revolves
at the same speed as the tappet shaft.
The arm or lever, which is fixed to the pattern barrel bracket and which is usually
connected to a crank or cam on the tappet shaft, is made much shorter than before
and is connected by a link to the before named upright locking lever, or to an
excentric revolving with the spur wheel which actuates said rocking lever, or it may
be worked by other convenient means.
Instead of connecting the peg levers (which are acted upon in the usual way by
the pattern chain) to the above named pivotted plates indirectly by the usual levers
and links, we connect each peg lever by a link cord or equivalent means directly to
its pivotted plate but at the spring end of the same so that although the peg lever is
raised as usual its corresponding pivotted plate is lowered.
The clip or ring of the Whitesmith's motion is in our arrangement linked to a
horizontal lever near the floor and parallel or nearly so with the picking lever and the
other end of this lever raises the shuttle box either directly by the usual connecting
rod or through a second lever. In the former case as the lowering of the excentric
will raise the shuttle box the shuttles must be arranged accordingly.
It will be understood from the above description that this modification of the
Whitesmith's or "Scotch" motion can be applied to underpick looms without in any
way interfering with the picking mechanism.
Dated this 3rd day of May 1890.

page_text: COMPLETE SPECIFICATION.
Improvements in the Shuttle-box Motion of Looms for Weaving.
WO FREDERICK SCHOLES Manufacturer and THOMAS WALKDEN, Loom Overlooker,
both of Eton Hill Mill Radcliffe in the County of Lancaster do hereby declare the
naturo 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 :-
The object of this invention is so to modify the motion known as Whitesmiths or
the "Scotch" motion for actuating the shuttle boxes that it can be applied to under-
pick looms.
The ordinary Whitesmiths or Scotch motion is constructed with an excentric and a
slotted or grooved plate both acting (as is well known) upon a loose ring on the
excentric in order to raise or lower the shuttle boxes.
The excentric and the plate are driven by pinions in gear with toothed wheels
provided with cogs or pegs. These cogs or pegs are kept in position by pivotted
plates which also serve as rests to support the hooked ends of catch levers which are
mounted on a crank or excentric on the tappet shaft and so move to and fro, and
when required are lowered by the said pivotted plates so that they can by moving the
wheels govern the position of the shuttle box.
All this gearing has hitherto been placed near to the floor at one side of the loom
and consequently has not been applicable to underpick looms where the picking
motion occupies the same position.
Our invention will be readily understood from the following description on reference
to the annexed sheet of drawings, on which Fig. 1 is an elevation of so much of a
Inom as is necessary to illustrate the apparatus applied thereto. Figs. 2 and 3 are
detached plan views hereafter more particularly referred to. a is the framing of the
loon & the crank shaft e the tappet shaft and the picking lever, e is the excentric
above described, the spur gearing, 9 the pivotted plates and h the hooked catch
levers.
According to our invention we mount the said eccentric e, the gearing f, and the
pivotted plates 9 on the upper part of the loom side or framing a above the crank
shaft b and out of the way of the picking motion, and we mount the hooked catch
levers upon or near one end of an upright rocking lever i carried by a bracket k
fixed to the loon framing a see Figs. 1 and 2, the other end of this rocking lever i
we connect by a link (or otherwise) to an eccentric or a crank, cam or equivalent
device, cast on, or actuated by, a spur wheol gearing with a pinion m on the crank
shaft 6 so that it revolves at the same speed as the tappot sbaft c (see also Fig. 3).
The arm or lever n which is fixed to the pattern barrel bracket o and which is
usually connected to a crank or cam on the tappot shaft, is made much shorter
than before and is connected by a link n' to the before namad upright rocking lever i,
or to a second lover (as shown on Figs. 1 and 3) connected by a link P to a crank
pin revolving with the spur wheel which actuates the rocking lever i; or it may
bo worked by other convenient means.
9
Instead of connecting the peg levers (which are acted upon in the usual way by the
pattern chain) to the above named pivotted platos indirectly by the usual levers and
links we connect each peg lever by a link s (or a cord or equivalent means) directly
to its pivotted plate but at the spring end 9' of the same as illustrated, so that
although the peg lever is raised as usual its corresponding pivotted plate g is
lowered.
g
The clip or ring e' of the Whitesmith's motion is in our arrangement linked by a
rod ex to a horizontal lever e, near the floor and parallel or nearly so with the
picking levor d and the other end of this lover e, raises the shuttle box e³, by the
usual connecting rod et, or by other suitable means.
In the former case as the lowering of the eccentric will raise the shuttle box the
shuttles must be arranged accordingly.

page_text: It will be understood from the above description that this modification of the
Whitesmith's or "Scotch" motion can be applied to underpick loons without in any
way interfering with the picking mechanism, and this arrangement can also be applied
to looms where a side tappet is employed to work the healds without in any way
interfering therewith.
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:-
First. The improved arrangement of the shuttle box motion of looms for weaving
substantially as hereinbefore described and illustrated by the drawings annexed.
Secondly. The combination of the pivotted plates linked directly at their spring
ends to their respective peg levers substantially as hereinbefore described and
illustrated by the annexed drawings.
Dated a
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.