Improvements in the Slubbing, Intermediate, and Roving Frames used in the Preparation of Fibrous Materials for Spinning.
Year: 1892

page_text: Date of Application, 12th Oct., 1892
Complete Specification Left, 8th July, 1893-Accepted, 12th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Slubbing, Intermediate, and Roving Frames
used in the Preparation of Fibrous Materials for Spinning.
We, SAMUEL HERBERT BROOKS, and RICHARD ALEXANDER DOXEY, both
of the Union Ironworks, West Gorton, in the County of Lancaster, Machine
Makers, GEORGE SHAW, of Albert Grove, Longsight, Manchester, in the said
County, Draughtsman, and PETER SHAW, of Brighton Avenue, Reddish, in the.
said County, Draughtsman, do hereby declare the nature of this invention to be
as follows:-
-
This invention relates to the "swing" or mechanism which carries the gearing
by which the bobbin shafts are rotated as the bobbin or traverse rail is moved
upwards and downwards.
In the arrangement hitherto adopted the driven wheel on the bobbin shaft is
caused by the reciprocating movement of the bobbin rail to alter its axial position
relative to the driving wheel first in one direction and then in the other, the one
wheel moving in a straight path to and fro past the centre of the other, thereby
causing a constant varying of the speed of the bobbin shaft wheel between the top
and bottom of the lift.
This invention is designed to so connect or couple together the wheels on the
fixed driving shaft and on the bobbin shaft which traverses up and down with
the rail that the speed of the latter will be constant during the rise and fall of
the rail.
It consists essentially in constructing the "swing" which carries the train of
wheels with loose joints at each centre,-links connecting together the several
centres and in such a manner that as the swing is moved upwards or downwards
by the rail the centres or pivots at the end of the first and second links or members
of the swing converge or diverge; the wheel carried by the second pivot being
drawn in between the wheel carried by the first pivot and the driven bobbin shaft
wheel in the first instance and withdrawn in the second instance and moving in
opposite directions against the periphery of each, compensates for the axial movement
of the driven bobbin shaft wheel.
In carrying out the invention we construct the swing with three members or links
each one loosely pivoted to the next. The first member or link is pivoted on the
driving shaft and at its end carries on a stud or pivot a carrier wheel which gears
with the driving wheel. The second member or link is pivoted to the end of the
first and at its outer end is pivoted a second carrier wheel of smaller diameter than
the first and which gears with the first carrier. The third member or link is
pivoted to the end of the second and at its outer end is pivoted on the bobbin shaft
to hold the second carrier wheel in gear with the driven wheel on the bobbin shaft.
In addition to these we provide a fixed pivot or centre some distance behind the
driving shaft upon which the first member of the swing is pivoted. On this fixed
pivot is pivoted a link or radius rod the other end of which is pivoted to the outer
end of the second member of the swing. By this arrangement as the bobbin shaft
is lifted the paths of these two centres (viz., that at the end of the first member and
that at the outer end of the second member) are eccentric and the movement
thereby occasioned draws the second carrier wheel between the peripheries of the
first carrier and the driven bobbin shaft wheel, thereby compensating for the loss of
movement which otherwise arises through the upward movement of the driven
wheel relative to the driving wheel. As the bobbin shaft is depressed the second.
carrier is withdrawn from between the first carrier and the bobbin shaft wheel and

page_text: compensates for the gain of movement which otherwise arises from the downward
movement of the driven wheel.
Instead of an additional radius link with a fixed centre the converging and
diverging movement of the end of the second member or link of the swing may
be obtained by extending the other end of this link and providing it with a stud
to move backwards and forwards in a radial slot. The movement of this end in the
slot causes the other end to be raised and lowered and to travel in the desired
direction. Or the outer end of the second member may itself be guided by means
of a radial slot.
It will be understood that although the links and members of the swing are
mentioned singly they are in pairs one on each side of the train of wheels.
Dated this 11th day of October 1892.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in the Slubbing, Intermediate, and Roving Frames
used in the Preparation of Fibrous Materials for Spinning.
We, SAMUEL HERBERT BROOKS, and RICHARD ALEXANDER DOXEY, both of
the Union Ironworks, West Gorton, in the County of Lancaster, Machine Makers,
GEORGE SHAW, of Albert Grove, Longsight, Mauchester, in the said County
Draughtsman, and PETER SHAW, of Brighton Avenue, Reddish, in the said
County, Draughtsman, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertaine
in and by the following statement :-
This invention relates to the swing or mechanism which carries the gearing by
which the bobbin shafts are rotated as the bobbin or traverse rail is moved upwards
and downwards.
In the arrangement hitherto adopted the driven wheel on the bobbin shaft is
caused by the reciprocating movement of the bobbin rail to alter its axial position
relative to the driving wheel first in one direction and then in the other, the wheel
on the bobbin shaft moving in a straight path to and fro past the centre of the
other causes a constant varying of the speed of the bobbin shaft wheel between the
top and bottom of the lift.
This invention is designed to control the path of motion of the carrier wheels by
which the driving wheel on the fixed driving shaft is connected or geared with the
wheel on the bobbin shaft so that the speed of this latter will be maintained constant
during the rise and fall of the rail.
It consists essentially in compensating for the axial movement of the bobbin
shafts produced by their traversing up and down with the lifting rail by causing
the centre of the second carrier wheel at the end of the second link of the swing
to converge and diverge to and from the fixed centre moving in a path of motion
as hereinafter described and gradually draw this wheel in or out between the centres
of the first carrier wheel and the bobbin shaft wheel sufficient to prevent the axial
movement of the bobbin shaft wheels consequent upon the first carrier rolling
round the fixed centre.
The invention will be fully described with reference to the accompanying
drawings in which as examples it is shown as applied to gearing, the wheels of
which have 81, 65, 32 and 51 teeth respectively.
Fig. 1. Elevation of swing with parts in section showing the path of motion of
the second carrier wheel controlled by a radius rod.
Fig. 2. Elevation of swing with parts in section showing the path of motion of the
second carrier wheel controlled by lever at the back of the link with a stud moving
in a curved slot,

page_text: Fig. 3. Elevation of swing with parts in section showing the path of motion of
the second carrier wheel controlled by a stud on the same centre moving in a
curved slot.
The bobbin shaft A on the traverse rail B is driven in the usual way by the
train of wheels a b c and d from the driving shaft C and the swing which carries
the carrier wheels and c is constructed with three links D E and F pivoted
together at the centres on which the wheels b and c rotate in any well known
manner.
In each of the drawings the traverse rail B is shown in its central position and
the swing in the same position in addition to which the other positions of the wheels
at the top and bottom of the lift are indicated by the dotted lines.
The end of the second link E which forms the centre of the second carrier
wheel c is by means of a radius rod or link, a lever in a slotted bracket or other
device caused to travel in such a curve as will guide the wheel c as desired to travel
in and out between the wheels b and d rolling over the periphery of each in opposite
directions and so take up or compensate any movement that would otherwise be
transmitted to the wheel by the rise and fall of the rail. This curve is shown by
the dotted line e-f, and is an approximate portion of the complete curve p s x¹
shewn on Fig. 3.
Referring to Fig. 1. we provide a fixed pivot or centre g, some distance behind
the driving shaft C upon which the first member of the swing is pivoted. On this
fixed pivot g is pivoted a link or radius rod G the other end of which is pivoted to
the outer end of the second member E of the swing at the centre about which the
second carrier wheel c rotates. The pivot 9 upon which the radius rod G moves is
carried by a bracket H affixed to the frame in any convenient way. The position
of this bracket can be moved to adjust the position of the centre or pivot g to suit
the size and position of gear wheels that are employed. As the bobbin shaft A
rises with the traverse rail B the paths of the two centres (viz., that at the end of
the first link D and that at the end of the second link E of the swing) of the
carrier wheel and the second carrier wheel c are eccentric and the movement
thereby occasioned draws the second carrier wheel c between the peripheries of
the first carrier and the driven bobbin shaft wheel d, thereby compensating for
the axial movement which otherwise arises in the driven wheel through its upward
movement relative to the driving wheel. As the bobbin shaft A falls with the
downward traverse of the rail the second carrier wheel e is withdrawn from
between the first carrier wheel b and the bobbin shaft wheel d and compensates for
the axial movement which otherwise arises in the driven wheel through its
downward movement relative to the driving wheel. The path of the centre of the
second carrier wheel c is shown by the dotted line e-f and that of the first carrier
wheel by the dotted line h-i and the dotted line k-l indicates the vertical
traverse of the bobbin shaft A the centre of the wheel d. The curve e-fis also
an approximate portion of the complete curve p-s shewn on Fig. 3.
Referring to Fig. 2. we control the movement of the second link E of the swing
and the path of the centre of the second carrier wheel c in the desired curve to
obtain the converging and diverging movement of the wheel c by extending the
other end of the link to form a lever E'. At the end of this lever or extension E'
is secured a stud with a bowl or runner which works in a curved slot in a bracket I
affixed to the framing. As the rail B rises and falls the movement of the stud on
the end of the lever E' in the curved slot causes the other end to traverse a path or
curve e-f which is a portion of the complete curve p-s-s' shewn on Fig. 3. and
gives the desired movement to the second carrier wheel c. The points m n o
indicate the centres from which the curves of the slot in the bracket have been
struck and are approximate only. The curve e is struck from the centre gl
which corresponds with the centre or pivot g of Fig. 1. The other letters of
reference indicate the same parts as in Fig. 1.
Referring to Fig. 3 the movement of the second link E of the swing and the
path which the centre of the second carrier wheel c traverses is controlled by a slot

page_text: of the proper curve in which a stud concentric with the centre of the wheel e works
controlling the outer end of the link E. The curved slot is carried in a bracket K
affixed to the framing. In this drawing the line ef showing the curved path of
the centre of the wheel c is extended tops s' to show the curve required to give
the desired movement on a greatly extended traverse of the rail B and the positions
of the wheels in these extremes are also shown. The other letters of reference
indicate the same parts as in the other figs. The four points t u v and w indicate
the approximate centres of the curve pefs s'. The centre corresponds with the
centre or pivoty on Fig. 1.
any
We wish it to be clearly understood that the curve pefs is approximately
correct for the wheels 81-65--32-51 arranged as shown, and that deviation
from these numbers and position produces a corresponding alteration in the curve.
We find it necessary to trace this curve by actual experiment before fixing upon an
approximate centre such as g or g' for any part.
We find that the portion ef of the curve pefs is approximately a segment of a
circle, and the point corresponding with 9 Fig. 1, is its approximate centre.
It will be understood that although the links or members of the swing are
mentioned singly they are preferably in pairs one on each side of the train of
wheels.
We wish it to be understood that we are aware swings have been constructed of
several links or members pivoted together and that these links have been steadied
by means of a stud on one of them traversing a guide slot and such we do not
claim.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In a slubbing roving intermediate or similar frame the methods of com-
pensating for or preventing the axial movement produced in the bobbin shafts in
traversing up and down with the rail by controlling the path of motion of the
carrier wheels substantially as described.
2. In a slubbing roving intermediate or other similar frame the combination with
the swing, constructed of pivoted links or members, of a radius rod pivoted on an
independent centre and to the end of the second link, to control the path of motion
of the second carrier wheel substantially as and for the purpose described.
3. In a slubbing roving intermediate or other similar frame the combination with
the swing constructed of pivoted links or members of a lever (such as E¹) forming
an extension of or connected to the second link pivoted with a stud working in a
curved slot by which the movement of the link is controlled and the centre of
the second carrier wheel guided in the desired path of motion substantially as and
for the purpose described.
Dated this 7th day of July 1893.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.