Improvements in the Manufacture of V-shaped Driving Belts or Bands.
Year: 1891

page_text: Date of Application, 6th Aug., 1891
Complete Specification Left, 3rd May, 1892-Accepted, 4th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of V-shaped Driving Belts or
Bands.
I, SAMUEL ROWвOTTOм, of Meadow Mills, Glossop, Derbyshire, Cotton
Spinner, do hereby declare the nature of this invention to be as follows:-
The improvements relate to driving belts or bands which are formed V shape,
for the purpose of taking into driving pulleys having a V shaped groove formed in
their periphery; and have for object the manufacture of a more solid formation of
belt or band, resulting in greater durability than is obtained from V belts or bands
at present in use.
To accomplish this and to effect my improvements, I employ any suitable material
wherewith to build up the V shaped belt or band, such as, for example, leather or
other forms of animal hide, whether tanned or otherwise prepared; or any woven
fabric or cloth, composed either of cotton, linen, flax, jute, worsted, hair or any other
fibrous material.
A number of strips of leather or woven cloth or belting having been prepared in
the ordinary manner, I build up the same in a compact solid V form by folding the
first strip simply upon itself, or I may employ a single strip of about half the width
of the others for this first or inner layer of material. I then fold over the same
the second strip, and over that the third, and so on, each succeeding strip being, by
preference, wider than the last, so that when a sufficient number of layers are
folded over each side of the construction, and firmly stitched, riveted, or otherwise
bound together, a belt or band of triangular shape in cross section is produced, with
the outer folded layers of material forming two sides of such triangle, and the
centre layer forming a perpendicular or thereabouts from the base to the apex.
In working, this centre layer runs edge-wise in the groove of the pulley, and the
successive overlapping layers on either side at varying angles thereto.
It will thus
be seen that the deeper the belt or band presses or works into the groove of the
pulley, the more tightly will the layers of the belt or band be pressed together, and
consequently the more solid the belt or band will become.
When the belt or band is desired to be built up of somewhat thin layers of woven
fabric, the whole or a portion of the strips may be folded back at the base of the
triangle, thus preventing, if desired, raw or rough edges of the layers forming the
base of the triangle, and enabling the base to be increased more or less rapidly,
according to the form of triangle required.
The layers may be firmly bound together in various ways, either by stitching
through the whole of the layers with cord, gut, wire, or other like means, or by
binding round the exterior of the triangular formation with cord, or other like
substances, or with woven or braided tape or other binding, as will readily be
understood, and other variations in detail may be made without departing from
the peculiar character of the invention.
Dated this 5th day of August. 1891.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in the Manufacture of V-shaped Driving Belts or
Bands.
I, SAMUEL ROWBOTTOM, of Meadow Mills, Glossop, Derbyshire, Cotton
Spinner 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:―
The improvements relate to driving belts or bands which are formed V shape, for
the purpose of taking into driving pulleys having a V shaped groove formed in
their periphery; and have for object the manufacture of a more solid formation of
belt or band, resulting in greater durability than is obtained from V belts or bands
at present in use.
To accomplish this, and to effect my improvements, I employ any suitable material
wherewith to build up the V shaped belt or band, such as, for example, leather or
other forins of animal hide, whether tanned or otherwise prepared; or any woven
fabric or cloth, composed either of cotton, linen, flax, jute, worsted, hair, or any
other fibrous material; or a combination thereof.
A number of strips of leather or woven cloth or belting having been prepared in
the ordinary manner, I build up the same in a compact solid V form by folding the
first strip simply upon itself, or I may employ a single strip of about half the width
of the others, for this first or inner layer of material. I then fold over the same
the second strip, and over that the third, and so on; each succeeding strip being..
by preference, wider than the last, so that when a sufficient number of layers are
folded over each side of the construction, and firmly stitched, riveted, or otherwise
bound together, a belt or band of triangular shape in cross section is produced, with,
the outer folded layers of material forming two sides of such triangle, and, the centre
layer forming a perpendicular, or thereabouts, from the base to the apex.
In working, this centre layer runs. edgewise in the groove of the pulley, and the
successive overlapping layers on either side at varying angles thereto.
It will thus be seen that the deeper the belt or band presses or works into the
groove of the pulley, the more tightly will the layers of the belt or band be pressed,
together, and, consequently, the more solid the belt or band will become.
When the belt or band is desired to be built up of somewhat thin layers of woven
fabric, the whole or a portion of the strips may be folded back at the base of the-
triangle, thus preventing, if desired, raw or rough edges of the layers forming the.
base of the triangle, and enabling the base to be increased more or less. rapidly,
according to the form of triangle required, though this rapid increase of the base.
may be accomplished in other ways, without folding back, such as by making the
edges of each folded strip thicker than the middle.
As a variation, in lieu of strips folded over one another, I may employ a number
of strips of about half their width, placed side by side, and fastened, or bound in
manner hereinbefore described.
These strips may either have one edge folded, so as to produce an approximately
wedge-shaped cross section, or they may be formed in such shape. in the first
instance; or the central strip or strips only may be taper or wedge-shaped, the
remaining layers being placed parallel thereto, on either side.
The various layers may be composed. either of one.material, or of combinations
of two or more materials, and may be firmly bound together in various ways, either by
stitching through the whole of the layers with cord, gut, wire, or other like means,
or by binding round the exterior of the triangular formation with cord, or other like
substances, or with woven or braided tape or other binding, as will readily be
understood and other variations in detail may be made without departing from
the peculiar character of the invention.

page_text: But that the improvements may be better understood, I will, with the aid of the
accompanying drawings proceed more fully to describe means employed by me.
DESCRIPTION OF DRAWINGS.
Figs. 1, 3, 5, 6 and 7 are cross sections of V shaped belting formed in various
ways in accordance with my improvements, and Figs. 2 and 4 are longitudinal
elevations of portions of such V belting, showing various modes of fastening or
binding the parts together.
The same letters indicate corresponding parts wherever they occur.
a, a, are the strips or layers forming the body of the belting; b, and 2 are
bands of hide, tape, and cord, or other materials for binding, and e, care rivets and
stitches, shown as a further variation in the method of fastening the strips together;
but, although some of the various sections are shown with one form of binding or
fastening, and others with other forms, it will be obvious that the modes of fastening
may be interchangeable, and that each of the varieties may be finished off by any
of the named, or other known methods.
In Fig. 1, the centre strip is shown folded upon itself, the V shape being built up
by folding the remaining layers about it.
Fig. 3, shows a similar arrangement, preferably for more Hexible material, such as
woven fabric, the edges of the strips in this case being folded back inside, to avoid
rough or raw edges forming the base of the triangle.
Fig. 5 shows an arrangement wherein a centre piece of leather, or other stiff
substance, is employed as a core, layers of flexible material, by preference, being
built up thereon; and Fig. 6, shows strips, of half the relative width, placed side
by side, the centre strips being wedge shaped; whilst Fig. 7, shows a form in which
the strips are formed thicker at the edges than elsewhere, in order to more rapidly
increase the width of the base.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed. I declare that what I
claim is :-
The construction of V shaped driving belts or bands, formed by strips, of suitable
material arranged in layers, so that the centre strip or strips, in working, shall run
edgewise in, or about perpendicular to the groove of the pulley to be driven, and
the remaining strips at varying angles thereto, to form the V, in manner substan-
tially as herein shown and described.
GEORGE FREDERICK GADD,
Per pro William Gadd, C.E.,
64, Barton Arcade, Manchester, Agent.
GEORGE FREDERICK GADD,
Per pro William Gadd, C.E.,
64, Barton Arcade, Manchester, Agent.