Improvements in Driving Belts.
Year: 1897

page_text: Date of Application, 4th.Mar., 1897.
· Complete Specification Left 6th Dec. 1897 Accepted 26th Feb.
1898
PROVISIONAL SPECIFICATION.
Improvements in Driving Belts.
We, EDWIN JAMES PRESTON, of the Firm of J. Stone & Co., of Deptford, London,
Engineers, and ARTHUR BERNARD GILL, of Glen Cot, Blackheath Park, Kent,
Electrical Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to produce driving belts practically nonstretchable
and. yet affording good adhesion while the ends are easily joined and so as not to
present greater thickness at the joint or otherwise impairing the smooth and even
working on the pulleys. In the making up of the belt we use links somewhat
similar to those used in the present leather link belts but we generally make the.
links slightly concave on the edge or edges or so that they accommodate themselves.
to the curvature of the pulleys or the smallest pulley on which the belt is used.
In one form the strength of the belt is partly or wholly made up by links of
vulcanized fibre or other suitable strong nonstretchable material while the required
adhesion is afforded by pieces of leather on the side next to the pulley, said pieces
being a little less in width than the length of a link and bent up at each end (that-
is to say at each edge of the belt) so as to be held by the rivets or pins for the
links. Or we may use rows of such leather pieces on both faces of the belt. The
rivets or pins may be united two and two by flat metal links wherein the rivets
are countersunk and kept from turning thus preventing the pins from wearing. A
row of such flat links may also in some cases be applied in the middle part of the
width of the belt. Two pins may be combined in the form of a wire staple, the
ends being rivetted or bent over after insertion.
In another form the middle part of the belt would be rows of leather links and
the lateral parts would be rows of links of vulcanized fibre or other suitable non-
stretchable material. In this case there may also be flat metal links uniting the
rivets two and two.
The arrangements described may in some cases especially for belts of great
width be duplicated or multiplicated.
For some purposes the belts or the parts of same requiring it are waterproofed
by dipping in paraffin wax or other suitable liquid.
Dated this Fourth day of March 1897.
JENSEN & SON;
"
77, Chancery Lane, London, W.C., Patent Agents.

page_text: We, EDWIN JAMES PRESTON, of the Firm of J. Stone & Co., of Deptford, London,
Engineers, and ARTHUR BERNARD GILL, of Glen Cot, Blackheath Park, Kent,
Electrical Engineer, 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 object of this invention is to produce driving belts practically unstretchable
and unaffected by heat, cold, wet or dry, of great flexibility, affording good adhesion,
and having a wearing or adhesive surface which can be renewed when worn.
Such belts are of special value for transmitting the power from a pulley on a
railway carriage axle to a small pulley on a dynamo arranged under the carriage
and adapted to supply current to electric lamps in the carriage compartment
according to the socalled Stone & Co. train lighting system in which the driving
belt is made to slip when a predetermined speed of train has been attained, as
described in the Patent Specification No. 1611 of 1895.
Fig. 1 is a side view of a belt, Fig. 2 a plan and Fig. 3 a cross section. The
belt consists of links 10 and 11 of vulcanized fibre or other suitable strong unstretch-
able material while the required adhesion and frictional surface on the under or
pulley side of the belt is afforded by the pieces 12 of leather, canvas, cotton; or
hair fabric or other suitable pliable material which takes no part or no material
part of the strain. These pieces are a little less wide than the length of the links
from rivet to rivet and are bent up at each end that is at each edge of the belt
and united to the links by the rivets 13. These pieces 12 may be carried round
on the outer side of the belt as shewn in dotted lines in Fig. 1, in which case the
belt can be turned round when the pieces 12 have been worn out on one side. The
outer link 11 along each edge of the belt are recessed and have washers 14 for
the rivets which are countersunk and kept from turning and prevented from wearing
in the links 11. These outer links 11 unite the rivets two and two. The vulcanized
fibre links 10 thus work on the rivets. The canvas pieces 12 may be waterproofed
by dipping them in paraffin wax or other suitable liquid.
In Figs. 4 and 5 the edge links 11 are made of metal such as iron while the
others are of a weaker material such as vulcanized fibre. The metal links 11 unite
the rivets by two and two.
Figs. 6 and 7 shew a similar arrangement of the links which in this case are
united by wire staples 131 that take the place of two rivets. Intermediate rows of
links corresponding to the edge links 11 may be made of metal.
In Figs. 8 and 9 the belt is made of vulcanized fibre links 11 and 10 alternating
with leather links 10¹ which latter are broader and form the frictional or adhesion
surfaces against the pulleys, while the fibre links 10 and 11 make up the strength
of the belt. Or the outer links may be of metal.
In Figs. 10 and 11 two rows of links 10% are of metal while the other links 10
are of vulcanized fibre, the adhesion or pliable frictional surface being provided
by the leather or canvas pieces 12. The edge links 11 may be of vulcanized fibre
or of metal or leather. In all cases the rivets must not work or turn in the edge
links.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
―
1. Flexible driving belt consisting of strong unstretchable material combined

page_text: required adhesion but is not subjected to the tension strain, substantially as set
forth.
2. Flexible driving belt consisting of links of strong unstretchable material
combined with pieces of soft pliable material united thereto by the same rivets,
substantially as and for the purpose set forth.
3. Flexible driving belt consisting of links of strong unstretchable material, the
edge links uniting the rivets two and two said rivets being kept from turning in
the edge links in combination with pieces of soft pliable material united thereto
by the same rivets substantially as and for the purpose set forth.
4. Flexible driving belt consisting of vulcanized fibre links and metal links the
edge links uniting the rivets two and two, said rivets being kept from turning in
the edge links, in combination with pieces of soft pliable material united thereto
by the same rivets substantially as and for the purpose set forth.
5. The flexible driving belt described with reference to Figs. 1 to 3.
6. The flexible driving belt described with reference to Figs. 4 and 5.
7. The flexible driving belt described with reference to Figs. 6, and 7.
8. The flexible driving belt described with reference to Figs. 8 and 9.
9. The flexible driving belt described with reference to Figs. 10 and 11.
Dated this Sixth day of December 1907
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.