Manufa
Year: 1886

page_text: Date of Application, 13th July, 1886.
Complete Left, 4th Apr., 1887.
Complete Accepted, 6th May, 1887.
I FRANK REDDAWAY of the firm of Frank Reddaway and Company of the Victoria
Mills, Cheltenham Street, Pendleton in the County of Lancaster Fire Hose and
Belting Manufacturers do hereby declare the nature of this Invention to be as
follows:-
My said Invention relates to the machinery employed in stretching woven or other
belting. In a machine at present in use the belting is drawn between drag rollers and
coiled upon a beam or core. The said drag rollers are pressed together by set screws
or other means so as to offer resistance to the passage of the belting, but the amount
of drag obtained is not always commensurate with that required, with the result that
the belting is frequently imperfectly stretched and subsequently gives trouble by
becoming soon slack when put to work. To obviate this defect in the stretching
apparatus I employ in conjunction with the foregoing pair of drag rollers an auxilliary
pair of rollers placed in line with the drag rollers. The two pairs of rollers are or
may be geared together, but that pair of rollers between which the belting first enters
has a surface speed slightly less than the succeeding pair of rollers so that
as the two pairs of rollers revolve with the traversing belting between, the first
pair of rollers by virtue of their slower surface speed, retard the belting
against the pull of second pair of rollers in advance and consequently stretch the
intervening piece of belting to and extent which can be varied at pleasure by
increasing or diminishing the relative surface speeds of the two pairs of rollers.
Dated this 12th day of July 1886.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.

page_text: Improvements in Belt Stretching Machinery.
I FRANK REDDAWAY of the firm of Frank Reddaway and Company of the Victoria
Mills, Cheltenham Street, Pendleton in the County of Lancaster Fire Hose and
Belting Manufacturers 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 said Invention relates to the machinery employed in stretching woven or other
belting. In a machine at present in use the belting is drawn between drag rollers and
coiled upon a beam or core. The said drag rollers are pressed together by set screws
or other means so as to offer resistance to the passage of the belting, but the amount
of drag obtained is not always commensurate with that required, with the result that
the belting is frequently imperfectly stretched and subsequently gives trouble by
becoming soon slack when put to work. To obviate this defect in the stretching
apparatus I employ in conjunction with the foregoing pair of drag rollers an auxilliary
pair of rollers placed in line with the drag rollers. The two pairs of rollers are or may
be geared together, but that pair of rollers between which the belting first enters has
a surface speed slightly less than the succeeding pair of rollers so that as the two
pairs of rollers revolve with the traversing belting between, the first pair of rollers by
virtue of their slower surface speed, retard the belting against the pull of the
second pair of rollers in advance and consequently stretch the intervening piece of
belting to an extent which can be varied at pleasure by increasing or diminishing the
relative surface speeds of the two pairs of rollers.
And in order that my said invention may be properly understood I will now
proceed moro particularly to describe the same with reference to the annexed sheet of
drawings.
Fig. 1 is an elevation of the improved belt stretching machine at the driving
side.
Fig. 2 is a vertical section.
Fig. 3 is a plan.
C,
The moving parts of the machine are supported in side frames a connected by
stays b.
At one end of the machine are situated the pairs of stretching rollers cl
and d d. The rollers of each pair are of equal diameter and are geared together at
one end by deep toothed pinions e and at the other end the lower rollers c and d of
each pair are geared together by spur wheels fg and h the spur wheel g being merely
an intermediate connecting wheel. The spur wheel fis slightly greater in diameter
than the spur wheel and as a result when the belt is passing through the machine
in the direction of the arrows, there is a difference in the surface speed of the pairs of
rollers with the result that the portion of the belt extending between the pairs of
rollers will be stretched with a force or to an extent corresponding to the differential
velocities of the two pairs of rollers. The amount of this differential velocity depends
upon the difference in the diameters of the wheels fand h. The axles of the top

page_text: rollers c and d of the pairs are mounted in adjustable bearings and are capable of being
pressed into close contact with the lower rollers by means of the set screws k and
which are rotated by means of hand wheels m, n. The amount of "nip" to be given
to the belt as it passes between the rollers can thus be regulated to a nicety. After
having passed between the stretching rollers the belt is coiled upon a beam or
core o which is rotated by means of the gearing shown at Figs. 1 and 3 from the fast
and loose driving pullies p q. On its way between the pair of rollers d, d¹ and the
coiling beam, the belt passes between a pair of measuring rollers. The axle of the
top roller carries a worm s at its outer end which gears with a worm wheel t on the
short upright shaft u. The upper end of the said shaft u is provided with an indicating
finger which indicates upon a fixed dial the length of belt passed through the
machine; or the said measuring apparatus may be used to discover the amount of
stretch imparted to the belt. On its entry to the machine the belt passes between
curved guides w which are adjustable upon the table x by means of tho screw y
operated by the handle z. By operating the screw y the guides w can be caused to
approach or recede from each other so as to suit varying widths of belting. It will be
evident that instead of obtaining the differential surface speed of the rollers by
varying the diameters of the spur gearing as hereinbefore described, a similar effect
may be obtained by making the gearing wheels equal and causing the diameters of the
rollers to differ. I do not confine myself to the exact arrangement of mechanism
shown and described nor to the indicated mode of gearing the rollers or other parts
together, nor to the numbers of pairs of stretching rollers, so long as such pairs of
stretching rollers have differential velocities or surface speeds tending to stretch the
portion or portions of belting extending between them.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed I declare that what I claim is :-
(1) The general arrangement and combination of parts composing my improved
belt stretching apparatus, substantially as hereinbefore described and shown.
(2) In apparatus for stretching belting the employment of two or more pairs of
rollers each pair having a surface speed relatively different to the other pair or pairs so
as to tend to stretch the portion of belting extending between the pairs of rollers,
substantially as hereinbefore described and shown.
Dated this 2nd day of April 1887.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.