Improvements in or connected with the Cone Drums of Slubbing, Roving, and similar Machines used in the Preparation of Fibrous Material.
Year: 1892

page_text: Date of Application, 18th Nov., 1892
Complete Specification Left, 29th July, 1893-Accepted, 16th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in or connected with the Cone Drums of Slubbing,
Roving, and similar Machines used in the Preparation of Fibrous
Material.
We, SAMUEL HERBERT BROOKS, and RICHARD ALEXANDER DOXEY, both
of the Union Ironworks, West Gortou, in the County of Lancaster, Machine
Makers, and GEORGE SHAW, of Albert Grove, Longsight, Manchester, in the
said County, Draughtsman, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the cones that are used to drive the bobbins and to
reduce the speed of the bobbins relatively to the spindle as each successive layer
of the rove is wound upon the bobbins.
The circumferential surfaces of these cones are formed or turned to corre-
sponding or complementary parabolic curves the one being convex and the other
concave.
It has hitherto been the practice and has been considered necessary in order to
give the desired results in the winding, and to prevent any straining, of the rove
that the corresponding or complementary parts of these curved surfaces should be
directly opposite to each other. In practice however we find that the driving belt
grips the driving cone by the opposite edge to that by which it grips the driven
cone and that in consequence the speed of the driven cone in relation to the driving
cone is not what is required nor what it is calculated to be.
This invention is designed to obviate this and consists in the combination with
or addition to the cone drums of an extension piece preferably cylindrical whereby
the cones are lengthened beyond the parabolic curves and when the strap is in
position for starting on the end of one cone and on the extension piece of the other
the gripping edges of the strap are engaging with the complementary parts of the
two cones.
In carrying out the invention the cones are turned up to the ordinary sizes and
curves and to the smaller end of each cone is added an extension piece in length
preferably equal to the breadth of the driving strap. This extension piece may
either be a separate piece in the form of a collar or washer keyed onto or affixed
to the cone or it may be cast in one therewith.
We prefer to make the extension piece or piece added to the small end of the
cone cylindrical as that will give a better grip to the driving belt on the small
end of the cone though it may be made convex, concave or tapered other than a
continuation of the parabolic curve which forms the surface of the cone.
The combination of this cylindrical or other extension piece to the small ends of
the cone drums increases the effective taper of the drums without increasing their
actual taper and corrects what has hitherto been a defective assumption, that
the relative speeds was determined by the diameter of the drums at a point
immediately opposite each other instead of at the edge of the belt upon the higher
side of the drums.
As a result we are able by a pair of drums each tapering from 7" to 3" to make
a bobbin from 1" to 6" in diameter or as 1 to 4 whereas formerly by the same
drums a bobbin from 1 to 5 only could be made.
Dated this 17th day of November 1892.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with the Cone Drums of Slubbing,
Roving, and similar Machines used in the Preparation of Fibrous
Material.
We, SAMUEL HERBERT BROOKS, and RICHARD ALEXANDER DOXEY, both
of the Union Ironworks, West Gorton, in the County of Lancaster, Machine
Makers, and GEORGE SHAW, of Albert Grove, Longsight, Manchester. 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
ascertained in and by the following statement:—
This invention relates to the cones that are used to drive the bobbins and to
reduce the speed of the bobbins relatively to the spindle as each successive layer of
the rove is wound upon the bobbins.
The circumferential surfaces of these cones are formed or turned to corre-
sponding or complementary parabolic curves the one being convex and the other
concave.
It has hitherto been the practice and has been considered necessary in order to
give the desired results in the winding, and to prevent any straining, of the rove
that the corresponding or complementary parts of these curved surfaces should be
directly opposite to each other. In practice however we find that the driving belt
grips the driving cone by the opposite edge to that by which it grips the driven
cone and that in consequence the speed of the driven cone in relation to the driving
cone is not what is required nor what it is calculated to be.
This invention is designed to obviate this and consists in the combination with
or addition to the cone drums of an extension piece preferably cylindrical and
parallel whereby the cones are lengthened beyond the parabolic curves and when
the strap is in position for starting on the end of one cone and on the extension
piece of the other the gripping edges of the strap are engaging with the
complementary parts of the two cones.
The invention will be fully described with reference to the accompanying
drawings.
Fig. 1. Front elevation of pair of ordinary cone drums.
Fig. 2. Front elevation of pair of cone drums constructed in accordance with our
invention.
The cone drums A are turned up to the ordinary sizes and to the ordinary
parabolic curves one cone being convex and the other concave. To the smaller
end of each cone we add an extension piece a (Fig. 2) in length preferably equal
to the width of the driving strap B indicated by the dotted lines. The extension
piece a may either be a separate piece in the form of a collar or washer keyed on
to or affixed to the cone or cone shaft or it may be cast in one with the cone and
turned up at the same time.
We prefer to make the extension piece or piece a added to the small end of the
cone cylindrical and parallel as that will give a better grip to the driving belt on
the small end of the cone.
The combination of this extension piece a to the small ends of the cone drums
increases the effective taper of the drums without increasing their actual taper
and corrects what has hitherto been a defective assumption, viz. that the relative
speeds were determined by the diameters of the drums at points immediately
opposite each other instead of at the edges of the belt upon the higher sides of the
drums.
Thus in a pair of cones with an actual taper of 7 inches to 3
present system the effective taper of the concave cone with a 2
7 inches to about 338 inches and of the convex drum from 7
33 inches being a difference in the one case of about of an inch
inches under the
inch belt is from
inches to about
and in the other

page_text: of about of an inch from the actual taper of the cones and a difference of
effective taper between the two cones of about of an inch. Whereas under our
new system the effective taper of each cone is from 7 inches to 3 inches which is
theoretically correct and there is no difference between the actual and effective
taper of the two cones.
As a result we are able under this invention by a pair of cone drums each
tapering from 7 inches to 34 inches to make a bobbin from 1 inches to 6 inches in
diameter or as 1 to 4 which is theoretically correct whereas formerly by co :es of
the same dimensions without our improvement or addition a bobbin from 1 inches
to 5 inches only could be made, while at the same time we
remove all the
unequal strain or stretch upon the rove during the winding which has hitherto
been unavoidable.
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. Forming the cone drums of slubbing, roving and similar preparing machines
with an extension piece beyond the parabolic curve on the smaller end of each
whereby the gripping or driving edges of the driving strap are caused to engage
at starting with the complementary parts of the two cones substantially as
described.
2. In slubbing, roving and similar preparing frames the addition to or combination
with the cone drums A of the extension pieces a at the smaller end of each whereby
the cones are lengthened beyond their parabolic curves substantially as and for the
purposes described and shown.
Dated this 27th day of July 1893
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.