IMPROVE- MENTS IN APPARATUS CONNECTED WITH ROPE DRIVING AND HAULAGE
Year: 1883

page_text: LETTERS PATENT to Michael Holroyd Smith of Halifax in the County of
York Mechanical and Consulting Engineer for an Invention of "IMPROVE-
MENTS IN APPARATUS CONNECTED WITH ROPE DRIVING AND HAULAGE"
PROVISIONAL SPECIFICATION left by the said Michael Holroyd Smith at
the Office of the Commissioners of Patents on the 29th January 1883.
MICHAEL HOLROYD SMITH of Halifax in the County of York Mechanical
and Consulting Engineer "IMPROVEMENTS IN APPARATUS CONNECTED WITH ROPE
DRIVING AND HAULAGE"
This invention relates to apparatus wherein a rope is the medium by which
power is transmitted or applied in the first case to pulleys constructed in such
manner that the portion of the rope encircling for the time being part of the
circumference of the driving pulley is gripped as distinguished from mere friction
arising from contact of rope and pulley as heretofore
Pulleys constructed according to this my invention have at intervals of their
circumference angled slots or projections within which fingers or bars of wood aro
received and held so that the latter stand at oposite angles one leaning to the right
and the other to the left the driving rope resting upon and gripping the said
fingers or bars of wood, the driving rope tending to form a slightly waved or
corrugated line on and between the said fingers or bars and the latter may be
square or of other form so as to admit of removal from their slots and being turned
and replaced so presenting new working surfaces to the rope.
Another modification of pulley comprising a grooved or double inclined rim
having passage way or space between the two angle surfaces so that a rope of
hemp or leather may be passed around or threaded over the inclined faces the said
rope forming at intervals the equivalent of the holding and gripping fingers herein
referred to
Where power is applied by means of hauling at a rope such as for tram cars
mountain railways coal and other mining railways the hauling rope is laid longi-
tudinally between the rails there being attached by plates or otherwise secured to
the cross sleepers like fingers or bars as aforesaid on and between which the rope
is laid and on being hauled at the fingers or bars maintain a firm grip upon the
rope until lifted therefrom and thereout by the advance of the engine.
The fingers or bars here referred to may be of wood, leather, gutta porcha
hempen rope or other like substance.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Michael Holroyd Smith in the Great Seal Patent Office on the
27th July 1883.
MICHAEL HOLROYD SMITH of Halifax in the County of York Mechanical
and Consulting Engineer "IMPROVEMENTS IN APPARATUS CONNECTED WITH ROPE
DRIVING AND HAULAGE
"
This invention relates to apparatus wherein a rope is the medium by which
power is transmitted or applied in the first case to pulleys constructed in such
. manner that the portion of the rope encircling for the time being part of the
circumference of the driving pulley is gripped as distinguished from mere friction
arising from contact of rope and pulley as heretofore.
Pulleys constructed according to this my invention have at intervals of their
circumference angled slots or projections, within which fingers or bars of wood are
received and held so that the latter stand at opposite angles one leaning to the
right and the other to the left the driving rope resting upon and gripping the said
fingers or bars of wood, the driving rope tending to form a slightly waved or
corrugated line on and between the said fingers or bars and the latter may be
square or of other form so as to admit of removal from their slots and being turned
and replaced so presenting new working surfaces to the rope.
Another modification of pulley comprising a grooved or double inclined rim
having passage way or space between the two angle surfaces so that a rope of
hemp or leather may be passed around or threaded over the inclined faces the said
rope forming at intervals the equivalent of the holding and gripping fingers herein
referred to.
Where power is applied by means of hauling at a rope such as for tram cars,
mountain railways, coal and other mining railways, the hauling rope is laid longi-
tudinally between the rails there being attached by plates or otherwise secured to
the cross sleepers like fingers or bars as aforesaid on and between which the rope
is laid and on being hauled at the fingers or bars maintain a firm grip upon the
rope until lifted therefrom and thereout by the advance of the engine.
The fingers or bars here referred to may be of wood, leather, gutta percha,
hempen rope or other like substance
Such being the nature and object of this my said invention I will now proceed
to describe the same in detail and in order that the invention may be fully
understood I, have hereunto annexed four sheets of drawings illustrative of the
same and have marked the several views with figures of reference.
Fig 1 is section of pulley and one arm of same
Fig
2 is side elevation of part of rim and one arm in elevation
Figs 3. 4. 5 sheet 2 are sections of pulleys
Fig 6 sheet 3 shews application of the fingers to pulley of A or angled rim
in Section and having square driving belt.
Fig 7 shews the conversion of a plain belt pulley to a gripping pulley for rope
driving by the addition of fixings-illustrated enlarged views Fig 8 and plan view
Fig 9 the elevation-Fig 8 shews two of the fixings which are placed alternately
at opposite sides of the rim-this construction is applicable to the sleepers where
rope haulage is employed-Figs 10 and 11 illustrate a double grooved pulley
the gripping surface consists of the coils of a hempen rope passed through eyes or
holes in the sides of the rims.
At A is the rim of the pulley having at intervals slots B. into which are
introduced the lags bars or pegs of wood, leather india rubber or vulcanite C the

page_text: lags bars or pegs are on opposite sides and angles of the pulley and may be removed
and turned so as to present a new working surface and replaced.
At 4 (Figs 10 and 11) is shewn a two groove pulley having the hempen Rope D
passed through the eyes or holes E and around the Vs of the pulley as shewn, the
rope forming the equivalent of lags, bars or pegs C above described.
Having thus fully described the nature and particulars of this my said invention
together with the manner in which the same is to be or may be performed or
carried into practical effect I would have it understood that what I claim is
The improved apparatus for purpose herein described wherein is employed the
movable pegs lags or bars, or the equivalent hempen rope as fully illustrated by
the annexed drawings.
In Witness whereof I the said Michael Holroyd Smith have hereunto set my
hand and seal this twenty fifth day of July in the year of our Lord one thousand
eight hundred and eighty three.
Witness
WALTER BRIERLEY
Patent Agent
Halifax & Blackburn |
M. HOLROYD, SMITH, (L.S.)