Improvements Connected with the Spindles of Spinning and Doubling Machines.
Year: 1888

page_text: Date of Application, 21st June, 1888
Complete Specification Left 25th Jan., 1889
Complete Specification Accepted; 2nd Mar., 1889
PROVISIONAL SPECIFICATION.
Improvements Connected with the Spindles of Spinning and
Doubling Machines.
1 JOHN MUIR HETHERINGTON of the Vulcan Works, Pollard Street, Manchester in
the County of Lancaster, Machine Maker do hereby declare the nature of this.
Invention to be as follows:-
My Invention relates to the spindles which are mounted to revolve in fixed bolsters
in which both or all of the bearings of the spindle are contained. In the operation of
doffing the cops bobbins or tubes from such spindles there is a tendency for the
spindle to be lifted in the absence of any special means for the prevention of such
lifting. The object of my invention is to provide a simple and inexpensive appliance
which shall serve the double purpose of a brake to arrest the revolutions of the
spindle and of a detent to limit the said lifting of the spindle. The said appliance
which I will term a detent brake consists of a single casting which is so shaped and
applied as to dispense with the necessity for using a hinge or hinge pin or a screw or
fastening or specially applied additional part. The said detent brake is formed with
an aperture to fit upon the collars of the bolster with freedom to permit of a suitable
amount of rocking movement on the part of the detent brake. From the central or
nearly central part in which this aperture is formed two arms extend one backward
and upward and the other forward and downward. The upper end of the backwardly
projecting arm extends over the wharve and toward the sleeve and is shaped to suit
the form of the said sleeve or is adapted to act as a brake when pressed against the
said sleeve. The front arm extends downward below the spindle rail and an inclined
or curved projection or swell extends from this front arm below the rail for a short
distance. In practice I form the appliance with two such projections for convenience
of production but this is not important. When pressure is applied to the lower part
of the downward extension of the front arm the detent brake turns upon the front
edge of the spindle rail as upon a fulcrum and the brake part of the appliance becomes
pressed against the sleeve. When the spindle is lifted in doffing, the wharve comes

page_text: in contact with the said brake part of the appliance any increase in the tendency for
the spindle to rise being resisted by the jamming of the brake part against the sleeve
due to the lever action of the appliance. I do not confine myself to the formation of
the detent brake appliance by the operation of casting.
Dated this 20th day of June 1888.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.
COMPLETE SPECIFICATION.
Improvements Connected with the Spindles of Spinning and
Doubling Machines.
I JOHN MUIR HETHERINGTON of the Vulcan Works, Pollard Street, Manchester,
in the County of Lancaster, Machine Maker, 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 and accompanying
drawings :
My Invention relates to the spindles which are mounted to revolve in fixed bolsters
in which both or all of the bearings of the spindle are contained. In the operation of
doffing the cops bobbins or tubes from such spindles there is a tendency for the
spindle to be lifted in the absence of any special means for the prevention of such
lifting. The object of my invention is to provide a simple and inexpensive appliance
which shall serve the double purpose of a brake to arrest the revolutions of the spindle
and of a detent to limit the said lifting of the spindle. The said appliance which
I have termed a detent brake consists of a single casting which is so shaped and
applied as to dispense with the necessity for using a hinge or hinge pin or a screw or
fastening or specially applied additional part. The said detent brake is formed with
an aperture to fit upon the collar of the bolster with freedom to permit of a suitable
amount of rocking movement on the part of the detent brake. From the central or
nearly central part in which this aperture is formed two arms extend one backward and
upward and the other forward and downward. The upper end of the backwardly
projecting arm-extends over the wharve and toward the sleeve and is adapted to act as
a brake when pressed against the said sleeve. The front arm extends downward
below the spindle rail and an inclined or curved projection or swell extends from this
front arm below the rail for a short distance.
In order that my Invention may be clearly understood I will describe the same
more fully with reference to the accompanying drawings.

page_text: In the said drawings Fig. 1 is a perspective view of the said detent brake.
Fig. 2 represents it in position during the ordinary working of the spindle.
Fig. 3 represents the spindle slightly lifted from its working position and shows
how the detent brake prevents any further upward movement.
The detent brake consists simply of a single casting which is by preference provided
with a lining of leather or other suitable material. With the exception of this lining
the appliance consists only of one piece of metal which does not require any fastening
or hinge pin or any adjunct other than the ordinary spindle-rail and bolster to keep it
in position or to serve as a fulcrum for its movement. For convenience I will
describe the detent brake as consisting of three parts a central part a an upward
extension a¹ and a downward extension a². In the part a is formed an aperture c. c
clearly shown in Fig. 1. This aperture is shaped to suit the form of the collar b
which is formed upon the spindle bolster b. This collar has two flat sides 62 as is
usual and flat places are formed at c. c on the sides of the aperture in a to suit the
flat places upon the said collar. When the detent brake is seated in position upon
the spindle rail d as seen in Fig. 2 the collar b¹ nearly fills the aperture in a so that
the detent brake is kept in position without any screw pin or fastening and is
prevented from turning round upon the bolster by the two flat sides upon the
collar 6. The upper end of the extension a' is formed with a part a³ which projects
over the ordinary wharve e¹ which is formed upon the ordinary sleeve e which is
fixed upon the spindle e². The face of the projection a3 which is toward the said
sleeve is hollowed to suit the shape of the sleeve as seen in Fig. 1 and this hollowed
part is provided with a leather lining for with a lining of felt or of cloth wood or
other material or any such lining may be dispensed with. The downward extension a²
extends below the spindle rail and is slightly inclined away from it as seen in Fig. 2.
Upon the lower end of this extension are formed two lugs as a one of these being
indicated by the dotted lines in Fig. 1. These lugs are intended to project to some.
extent below the spindle rail as seen in Fig. 2. When the part a² is pressed toward
the spindle rail the detent brake being prevented by the collar 61 from moving
horizontally upon the rail beyond the limits of the slight freedom allowed by the size.
of the aperture in a the detent brake will turn upon the corner d¹ of the rail and the
part a¹ will rise and the projection a³ will move into contact with the sleeve e and if
the pressure upon a² be sufficient the rotation of the spindle will be arrested. In
ordinary practice the pressure would be exerted upon the part a² by the knee of the
operator at the required times as for example when piecing or doffing. Upon the
pressure being removed the detent brake would immediately fall free of the sleeve
into the position shown in Fig. 2. If the operation of doffing lifts the spindle and
therefore the sleeve e and wharve e¹ the latter comes into contact with the underside
of the projection a³ as seen in Fig. 3 and if the upward strain upon the spindle be
sufficient the lugs at will be lifted into contact with the corner d² of the spindle rail as
appears in Fig. 3. When this Fig. is examined it will be seen that a vertically acting
upward force exerted at will jam the hollow face of a³ against the sleeve which
will in turn be forced to one side so as to tighten the spindle in its bearing and will at
the same time be prevented from rising further or from revolving so that the
appliance will answer the double purpose of a detent and of a brake. The detent
brake may be forged or stamped or be pressed in dies or otherwise formed than by
the operation of casting. Two lugs a are provided partly for sake of lightness and
partly because if the part o² were formed with a single projection extending across the
width of the part a² or with a central projection such projection would at times come
into contact with the ordinary nut 63 which secures the bolster to the rail.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:
(1) The detent brake of the peculiar form as shown in the drawings made in a
single piece and applied to a spindle rail and spindle mounting in the manner as
Santh

page_text: (2) The detent brake formed in one piece of metal having a central part a to sit
upon the spindle rail of a spinning or doubling machine an aperture c c to nearly fit
the collar of the spindle bolster an upward extension a¹ provided with a projection a³
shaped to act as a brake upon the spindle sleeve and a downward extension a² formed
with lugs a or with a projection to pass below the corner d² of the spindle rail
substantially as set forth and indicated.
(3) The combination of the detent brake a a¹ a² a³ and a formed with the
aperture cc with the spindle rail d the bolster 6 having a collar and the sleeve e
wharve e¹ and spindle of a spinning or doubling frame substantially as set forth.
Dated this 24th day of January 1889.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.