Year: 1885

page_text: on rules.
I, EDMUND EDWARDS, of the firm of Edwards and Co:-Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex do hereby declare the nature of this invention (a communication to
me from abroad by Revardeaux-Dumont, of Reims, in the Republic of France,
Engineer) to be as follows:-
This invention relates to the forks ordinarily used for the purpose of shifting
driving belts on or off pullies used in different kinds of machinery.
It has for its object an improved method of making such forks so that friction
and wear of the edge of the belt against them is reduced, and the consequent
resistance to the movement of the belt and the tendency to run off the pullies are
prevented, whilst its shifting from one pulley to another is facilitated.
The improved apparatus consists of two parallel bars between which the belt
runs in the usual way, the bars being fixed at one end to a crossbar or plate
by which they can be moved from side to side when required, carrying the belt
with them.
Each of the parallel bars is cylindrical and has at its fixed end a shoulder against
which fits a moveable washer upon which rests a hollow sleeve or tube of india-
rubber, wood, metal, or other suitable material which turns freely upon the bar and
forms a friction roller against which the edge of the belt presses. The outer end
of the bar, above the sleeve, is fitted with a washer and split pin or with a nut or
other equivalent device which keeps the sleeve in its place.
In cases where the fork is to be used with its points downward, the washers first
described are fitted against the outer ends of the sleeves between the latter and the
nut, their object being to reduce friction and facilitate the rotation of the sleeves
upon the bars.
By the use of the improved apparatus loss of power is avoided, evenness of
working obtained, and the wear and tear of belts greatly reduced.
1
SO 100

page_text: on Pullies..
I, EDMUND EDWARDS, of the firm of Edwards and Co-Patent Agents and
Engineers, of 35 Southampton Buildings, Chancery Lane, in the County of
Middlesex do hereby declare the nature of this invention (a communication to
me from abroad by Revardeaux-Dumont, of Reims in the Republic of France) and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, and accompanying drawing, (that is
to say):
This invention relates to the forks ordinarily used for the purpose of shifting
driving belts on or off pullies used in different kinds of machinery.
:
It has for its object an improved method of making such forks so that friction
and wear of the edge of the belt against them is reduced, and the consequent
resistance to the movement of the belt and its tendency to run off the pullies are
prevented, whilst its shifting from one pulley to another is facilitated.
The accompanying drawing is in illustration of the invention.
The improved apparatus consists of two parallel bars a a between which the belt
runs in the usual-way, the bars being fixed at one end to a crossbar or plate a¹
by which they can be moved from side to side when required, carrying the belt
with them.
Each of the parallel bars is cylindrical and has at its fixed end a shoulder b
against which fits a moveable washer c upon which rests a hollow sleeve or tube d.
of india rubber, wood, metal, or other suitable material, which turns freely upon
the bar and forms a friction roller against which the edge of the belt presses. The
outer end of the bar, above the sleeve is fitted with a washer and split pin as
shewn at e or with a nut for other equivalent device which keeps the sleeve in
its place.
In cases where the fork is to be used with its points downward, the washers o
first described are fitted against the outer ends of the sleeves d between the latter
and the nut e or f their object being to reduce friction and facilitate the rotation of
the sleeves upon the bars.
By the use of the improved apparatus loss of power is avoided, evenness of
working obtained, and the wear and tear of belts greatly reduced.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
L
The sleeves or tubes d, washers c, and washers and pins e or nuts f, substantially
as and for the purpose described and shown.