Year: 1886

page_text: Date of Application, 15th Mar., 1886.
Complete Left, 9th Dec., 1886.
Complete Accepted, 11th Jan., 1887.
I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved means for raising and lowering the shuttle
boxes in power looms whereby a positive movement is imparted to them by 'a
differential motion of the following character.
On a shaft I mount a pan of bevel or mitre wheels which engage with a wheel
placed centrally. To one of the outer wheels I form in one with or attach a short
arm which has a forked end which forms a fulcrum to which a lever is pivotted. The
wheel on the opposite side has an elongated boss on to which is secured a pulley or
chain wheel. The central wheel is secured to a sleeve and runs loosely upon a spindle
the said spindle having a continuation with a forked end with which a lever engages.
The chain wheel communicates motion to a rocking lever one end of which is attached
by means of a short link to a vertical shaft which supports the shuttle boxes, the oppo-
site end of this rocking lever being furnished with a balance weight.
To effect the rising of the boxes for instance from one shuttle box to the next, the
wheel with the short arm is turned one way. To effect the rising of the shuttle box
from the first to the third box the wheel mentioned above is secured by means of a
catch and the central wheel is turned in the opposite direction. If it be desired to
shift the boxes from one to four the wheel first above mentioned is turned as at first
and the central wheel in the opposite direction to effect the movement from the second
to the third box both the wheels are drawn in the same direction. When it is desired
to lower the shuttle boxes to any particular point a reversal of the movements
described above will produce the desired result.

page_text: I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Engineer, do hereby declaro, 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 statemont :-
This invention relates to an improved means for raising and lowering the shuttle
boxes in power looms whereby a positive movement is imparted to them by a
differential motion of the following character.
On a shaft I mount a pair of bevel or mitre wheels which engage with a wheel
placed centrally. To one of the outer wheels I form in one with or attach a short
arm which has a forked end which forms a fulcrum to which a lever is pivoted. The
wheel on the opposite side has an elongated boss onto which is secured a pulley or
chain wheel. The central wheel is secured to a sleeve and runs loosely upon a spindle
the said spindle having a continuation with a forked end with which a lever engages.
The chain wheel communicates motion to a rocking lever one end of which is attached
by means of a short link to a vertical shaft which supports the shuttle boxes, the
opposite end of this rocking lever being furnished with a balance weight.
To effect the rising of the boxes for instance from one shuttle box to the next, the
wheel with the short arm is turned one way. To effect the rising of the shuttle box
from the first to the third box the wheel mentioned above is secured by means of a
catch and the central wheel is turned in the opposite direction. If it be desired to
shift the boxes from one to four the wheel first above mentioned is turned as at first
and the central wheel in the opposite direction to effect the movement from the second
to the third box both the wheels are drawn in the same direction. When it is desired
to lower the shuttle boxes to any particular point a reversal of the movements
described above will produce the desired result.
Figure 1 of the accompanying drawings represents a side elevation of the
apparatus detached from the loom, Figure 2 a plan thereof, Figure 3 an elevation of
loom with apparatus applied and Figure 4 an alternative form of apparatus.
On the lathe-axle or in a short shaft d in the same axial line are mounted loosely
the bevel wheels a c and gearing with these is a bevel wheel b which is carried by a
boss projecting from a sleeve also mounted loosely on the shaft d. Extending from
the wheel a is an arm e jointed to the rod of an eccentric the axis of the wheel b
being similarly connected by means of an arm g to the rod of the eccentric h. The
eccentric is connected to a pinion i which gears with another wheel & the latter being
double the diameter of the pinion i. In like manner the eccentric is connected with

page_text: a pinion gearing with the wheel m double the diameter of 1. The wheels i and I are
looso on the shaft n. Each of the wheels and m has four studs 1, 2, 3, 4, on the
face thereof and hooks o, one for each wheel, are employed for imparting intermittent
rotation thereto. These hooks are attached to the rod p¹ of the eccentric p which receives
continuous motion from the low or lappit shaft of the loom. It will be readily seen
that the catches o can only impart a quarter of a revolution to the wheels with which
they respectively engage for each revolution of the eccentric p and this transmitted to
their respective pinions will impart half a revolution thereto and therefore to the
eccentrics connected with the pinions.
With the bevel wheel ca pulley q is connected under which a cord or chain » passes
one end of the chain being connected to the lower shuttle box and the other after
passing over a guide pulleys to the top shuttle box. A guide pulley t is also employed
to ensure a vertical drag on the boxes.
The connection of the pulley 7 with the shuttle boxes may also be arranged as
shown in Figure 4 wherein the shuttle boxes I, II, III, IV, are carried by a rod t¹
jointed at its bottom end to a lever s¹ fulcrummed at 3. The oscillatory motion of the
pulley is imparted to the lever s by means of the chain the pulley q¹ corre-
sponding in every respect with the pulley q in the other Figures.
The catches o may be thrown into or out of operation by means of a pattern chain
peglag or other suitable mechanism, the following being the manner in which the
changes are effected.
From the first to the second box. Wheel kis rotated and the arme of the bevel
wheel a depressed by the rod of the eccentric f. The wheel b acting as a carrier com-
municates the motion of a to c and consequently to pulley g in the opposite direction
the result being an upward motion of the boxes.
To change from the second to the third box both catches o are brought into opera-
tion the result being that both of the arms e and g are raised. In this case the wheel b
does not revolve but merely serves to connect wheels a and c together causing them to
move in the same direction the result being a further upward motion of the boxes.
The movement from the third to the fourth box will be the same as from the first to
the second.
To change from the first to the third box.
The arm g of the wheel b will be raised the wheel a will remain stationary and the
wheel c will receive a movement double to that of the wheel which revolves and
moves bodily at the same time.
To change from the first to the fourth box the arm e of the wheel a will be depressed
and the army of the wheel raised whereby the wheel c will receive a movement three
times that of the wheel a.
The change from second to fourth box is effected in the same manner as that from
the first to the third.
The lowering of the boxes is effected by merely reversing the movements of the
parts. In the drawings the boxes are shown in the first position that is to say the first
box is on a level with the lathe bed from which position all the other positions of the
shuttle boxes are to be derived.
In order to hold the boxes firmly in position after the changes a brake may be
applied to the pulley 4.
It will be readily seen that this invention is equally applicable to revolving or other
change shuttle boxes.
Having now particularly described and ascertained the nature of the said invention
as communicated to me by my foreign correspondent and in what manner the same
is to be performed I declare that what I claim is :-
1. In a change shuttle-box loom the combination with the bevel wheels a b c of
eccentrics and for the purpose of imparting a differential motion to the said wheels
substantially as specified and illustrated in the accompanying drawings.

page_text: 2. The combination with the bevel wheels abc of a pulley 7 and chain or cord r
substantially as and for the purpose specified and illustrated in the accompanying
sheet of drawings.
3. The combination of pulley 9 chain rand guide pulleys & and t for imparting a
positive rising and falling motion to the shuttle boxes substantially as specified and
illustrated in the accompanying drawings.
4. The combination of pulley q¹ chain ¹ lever s¹ and rod t the whole actuated by the
differential gearing a b c to impart a positive rising and falling motion to change
shuttle boxes substantially as specified and illustrated in Figure 4 of the accompanying
drawings.