IMPROVEMENTS IN BELTING
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for an
Invention of IMPROVEMENTS IN BELTING A communication to him from
abroad by Edwin Morgan Cross, of Syracuso, State of New York, United
States of America
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 15th January 1883.
HERBERT JOHN HADDAN of Kensington, Middlesex, "IMPROVEMENTS IN
BELTING." a communication to me from abroad by Edwin Morgan Cross, of
Syracuse, State of New York, United States of America.
It is a well known fact that the ordinary belting at present in the market, will
after a short usage stretch so as to loose its frictional hold on the pulleys and
requires frequent tightening.
-
To obviate the aforesaid defects by simple and comparatively inexpensive means
is the object of the present invention, and to that end it consists essentially in
sewing throughout the length of the belt two or more rows of stitches of waxed
thread or metallic thread.
In leather belts one row of stitches near each edgo thereof is in many cases
sufficient, canvas belts, however, should be provided with additional rows of stitches
between those at the edges of the belt.
A leather belt thus made requires no preliminary stretching, but its fibres are
left intact and unimpaired, and whether the belt is composed of leather or canvas
it is so reinforced by the described sewing as to relieve the fibres of the material of
the greater portion of the strain, effectually prevent the stretching of the belt, and
render one edge thereof as strong as the other, thus causing said belt to invariably
track true and retain its efficiency.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, and
of an Order of the Lord Chancellor, filed by the said Herbert John Haddan
in the Great Seal Patent Office on the 7th August 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex "IMPROVEMENTS IN
BELTING," a communication to me from abroad by Edwin Morgan Cross, of i
Syracuse, State of New York, United States of America
It is a well known fact to Mechanical Engineers and Machinists that the
ordinary belting at present in the market, will after a short usage stretch so as to
loose its frictional hold on the pulleys and requires frequent tightening.
This defect has in many instances led to the employment of double belts, these
however are more expensive and do not afford a strength proportionato to the
quantity of material, owing to the difference in the lengths of the inner and outer
layers of material when stretched over two pulleys and the consequent unequal
strain on said layers of material.
Manufacturers of belts have attempted to take the stretch out of the leather
belting by subjecting it to a stretching machine, but this treatment has only
replaced the aforesaid defects by other more serious defects, viz: it frequently
weakened the belting by excessive strain of its fibres and when such belting is
applied to use it almost invariably twists and warps so as to deprive it of an
effective hold on the pulley and of its capacity of tracking truly..
It is to obviate the aforesaid defects by simple and comparatively inexpensive
means which this invention has for its object and to that end it consists essentially
in sewing throughout the length of the belt two or more rows of stitches of waxed
thread or metallic thread.
In leather belts one row of stitches near each edge thereof as shown in Fig. 1 of
the drawing is in many cases sufficient, canvas belts, however, should be provided
with additional rows of stitches between those at the edges of the belt as best
shown in Fig 2 of the drawing-Fig 3 showing a longitudinal section of the same.
a, a, denoting the rows of stitches aforesaid.
A leather belt thus made requires no preliminary stretching, but its fibres are
left intact and unimpaired and whether the belt is composed of leather or canvas it
is so reinforced by the described sewing as to relieve the fibres of the material of the
greater portion of the strain, effectually prevent the stretching of the belt, and
render one edge thereof as strong as the other, thus causing said belt to invariably
track true and retain its efficiency.
In fact snid sewing imparts to the single belt a strength equal to that of the
double belts now in use.
Furthermore a single belt stitched near the edges in the manner shown and
described stiffens the edges and enables the same to resist the friction of tho
vertical faces of cone-pulleys which usually turn up and destroy or injure the edges
of ordinary belts.
This improved belting can be made from any portion of the hide; experience has
proved that a belt made from the flank or spongy portion of the hide is as strong
and effective as one made from the centre of the hide.

page_text: Having described the invention what I claim as new and desire to secure by
Letters Patent is :
As an improved article of manufacture a belt reinforced by longitudinal rows of
stitches of waxed or metallic thread extending the length of the belt substantially
as described and shown.
In Witness whereof I the said Herbert John Haddan have hereunto set my
hand and seal this 13th day of July A.D. 1883.