An Improved Cone Driving Drum.
Year: 1899

page_text: Date of Application, 4th Nov., 1898
Complete Specification Left, 7th July, 1900-Accepted, 11th Aug., 1900
PROVISIONAL SPECIFICATION.
An Improved Cone Driving Drum.
I, JOSEPH UNWIN INGHAM, of 261, Rochdale Road, Bury, in the County of
Lancaster, Mill Manager, do hereby declare the nature of this invention to be
as follows:-
This invention relates principally to the construction of the conical driving
drums which are applied to machines known as "slashers," used in the prepara-
tion of cotton yarn for weaving, but it is also applicable to conical driving drums
used to produce a differential speed of revolution in other machines
Such driving drums have hitherto been made in a simple conical form from
cue end to the other the surface thereof being perfectly smooth and gradual
and it has been found that this form is very destructive to the driving belts or
hands, as they are always slightly on the twist and the strain is very unequal
According to my invention I divide the length of the conical pulley into a
certain number of zones each one of which is preferably about the same width
as the driving belt or band employed, the zones are each formed cvlindrical as
to their surfaces, but gradually increasing in diameter from the small end of the
drum to the largest end
Between each two of these cylindrical zones I make an intermediate conical
zone leading from one to the other so that the whole drum consists of a series of
cylindrical zones gradually increasing in diameter divided by a series of corre-
sponding conical zones, the whole foiming a cone rising by stepped graduations
from one end to the other
It is believed that by the use of these cylindrical steps the "gup" of the
driving belt or stiap will be more effective and less liable to slip, and as there
will not be so much torsion on the said belt or strap the life thereof will be
considerably prolonged
Dated the 3rd day of November 1899
GEO DAVIES & SON,
Agents for the Applicant,
4, St Ann's Square, Manchester.
1, JOSEPH UNWIN INGHAM, of 261, Rochdale Road, Bury, in the County of
Lancaster, Mill Manager, do hereby declare the nature of this invention and in
what manner the same 18 to be performed to be particularly described and
ascertained in and by the following statement:-
This invention relates principally to the construction of the conical driving

page_text: drums which are applied to machines known as "slashers," used in the prepara-
tion of cotton yarn for weaving but it is also applicable to conical driving drums
used to produce a differential speed of revolution in other machines
Such diving drums have hitherto been made in a simple conical form from
one end to the other, the surface thereof being perfectly smooth and gradual
and it has been found that this form is very destructive to the driving belts or
banda, as they are always slightly on the twist and the strain is very unequal.
The nature of my said invention will be readily understood on reference to
the annexed drawing and the following explanation thereof
According to my invention I divide the lengths of the conical pulley into a
reitain number of zones a each one of which is preferably about the same width
as or rather wider than the driving belt or band employed, the zones are each
formed cylindrical or slightly "bellied' as to their driving surfaces as shown
on the drawing but gradually increasing in diameter from the small end of the
drum to the largest end thereof.
"
Between each two of these cylindrical zones a I make an intermediate conical
zone b leading from one step to the other so that the whole drum consists of a
series of cylindrical zones a gradually increasing in diameter divided by a
series of corresponding conical zones b, the whole forming a cone 118ing by
stepped graduations from one end to the other
"
It is found that by the use of these cylindrical or slightly curved steps the
gup" of the diving belt or strap will be more effective and less liable to slip
than on a long cone of the ordinary form and that as there will not be so much
torsion on the said belt or strap the life thereof will be considerably prolonged,
and the short intermediate conical zones b will facilitate the moving of the strap
or belt from one "speed" to the other in either direction
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 18 —
An improved cone driving drum formed with a series of steps of flat or
slightly curved or "bellied driving zones of about the width of the strap
or belt and of graduated diameters alternated with narrower zones of a conical
form leading from one step to the other as herein before described and illustrated
by the drawing annexed