IMPROVEMENTS IN BELTING, OR BELTS, OR BANDS FOR TRANSMITTING POWER, AND IN THE METHODS OF MANUFACTURING THE SAME.
Year: 1878

page_text: LETTERS PATENT to George Lamb Scott, of Manchester, in the County of
Lancaster, Engineer, and George Mac Lellan, of Glasgow, in the County of
Lanark, North Britain, Manufacturer of India-rubber Goods, for the Invention
of "IMPROVEMENTS IN BELTING, OR BELTS, OR BANDS FOR TRANSMITTING
POWER, AND IN THE METHODS OF MANUFACTURING THE SAME.'
"
Sealed the 8th October 1878, and dated the 1st August 1878.
PROVISIONAL SPECIFICATION left by the said George Lamb Scott and
George Mac Lellan at the Office of the Commissioners of Patents on the 1st
August 1878.
GEORGE LAMB SCOTT, of Manchester, in the County of Lancaster, Engineer, and
GEORGE MAC LELLAN, of Glasgow, in the County of Lanark, North Britain, Manu-
facturer of India-rubber Goods. "IMPROVEMENTS IN BELTING, OR BELTS, OR BANDS
FOR TRANSMITTING POWER, AND IN THE METHODS OF MANUFACTURING THE
SAME."
Our Invention relates to the driving belts or belting employed in the transmission
of power or of rotary movement, and principally to descriptions of belting known
as india-rubber belting, that is to say, to belting composed of woven fabric in
combination with vulcanised caoutchouc.
In the formation of such belting we combine bands, ribands, or strips of metal,
or of flattened wire with the fabric of the belting. For this purpose we prefer to
employ thin steel ribands.
In one method of manufacturing the belting we coat and treat the woven fabric
with the ordinary or with a suitable composition of caoutchouc and sulphur, or
other matters, by any ordinary or suitable means, as, for example, by any of the
means employed in the making of the ordinary belting composed of woven fabric

page_text: and vulcanised caoutchouc, and we fold the fabric to form a belt, or band, or riband
of steel, or two, three, or more ribands of steel, according to the required width of
belt, being placed or secured between the folds, so that when the vulcanising process
is completed the said ribands will be firmly embedded and enclosed within the
substance of the belt. We fold the fabric once in order to obtain a simple thickness
of fabric on each side of the interposed riband or ribands, or we fold the fabric as
often as may be required to obtain two or more thicknesses of fabric on each side of
the said riband or ribands.
When applying two or more ribands we prefer to arrange them side by side at
a sufficient distance apart to permit the enclosing folds of fabric to cohere firmly
at the parts between the parallel ribands of metal; and to ensure this cohesion, and
to render the finished belt more regular in thickness, we may interpose tapes or
strips of woven fabric, coated or treated with the caoutchouc preparation, between
the said ribands of metal.
To render the union more complete we may sew or stitch together the folds of
fabric, the stitches passing through the spaces between the ribands, and in some
cases through the margin of the fabric at one edge or at both edges of the belting.
In place of the ribands being enclosed within a folded fabric they may be inter-
posed between two or more strips or ribands of woven fabric, the metal and the
woven fabric being cemented together by means of caoutchouc, the whole being
subjected to the vulcanising process.
In some cases we propose to form endless belts of lengths suitable to the require-
ments of each case. In the formation of the joints when making such endless
belts we prefer to rivet, braze, or otherwise secure together two ends of each metal
riband. The joined ends of the said ribands are then enclosed in the folds of fabric
which has been coated as aforesaid, the formation of the joint being completed by
the process of vulcanisation.
When two or more ribands of metal are employed in the formation of one belt
we prefer that the joint of one riband shall not be in line across the width of the
belt with another joint. The ends of the fabric arc by preference caused to over-
Jap, or are stitched together, or are cut at an angle, or are otherwise so connected
together as that the completed joint shall be as strong as any other part of the belt.
As an improved belting will not stretch as in the case of ordinary belting the
said endless belts, or belts formed from our improved belting, will not require to be
shortened and repieced at intervals of time as in the cases of belts which stretch
during use.
We do not confine ourselves to the employment of caoutchouc or of the vulcan-
ising process, as paint, or inspissated linseed oil, or other compositions or materials
may be found to be suitable; or for some purposes the belts may not require to be
coated or treated with such materials