Improvements in and Applicable to Pulleys, Riggers, Discs, or Wheels.
Year: 1888

page_text: Date of Application, 8th Sept., 1888
Complete Specification Left, 7th June, 1889-Accepted, 13th July, 1889
PROVISIONAL SPECIFICATION
Improvements in and Applicable to Pulleys, Riggers, Discs, or
Wheels.
We. GEORGE SMITH and EDWIN SMITH Engineers of Nene Side Iron Works
Thrapston in the county of Northampton do hereby declare the nature of this
invention to be as follows:-
The object of our invention is to provide simple means for applying and fixing pulleys,
riggers, discs or wheels to shafting and spindles of different diameters by means of a
self contained adjustment.
We put our invention into practice as follows
We cast the pulley, wheel &c. with a rectangular opening through the boss in place
of the usual round hole. The rectangular opening is adapted to receive two adjustable
sliding blocks or V pieces which may be made to approach or recede from each other
and which receive the shaft between them.
The sliding blocks are tightened up to the shaft by two set screws. By varying
the degree of opening between the sliding blocks it is obvious that one and the
same pulley may be secured to shafts of different diameters ranging within certain
limits.
We sometimes use three or more sliding blocks.
We use the same device for loose pulleys by placing a bored and turned bush or
socket of the required size between the sliding blocks and in this way the same pulley
"fast "
may be used either as a
or loose."
«
COMPLETE SPECIFICATION.
Improvements in and Applicable to Pulleys, Riggers, Discs, or
Wheels.
We GEORGE SMITH and EDWIN SMITH of Nene Side Iron Works Thrapston in
the county of Northampton Engineers and Ironfounders 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 our invention is to provide simple means for applying and fixing
pulleys, riggers discs or wheels to shafting and spindles of different diameters by
means of a self contained adjustment.
We put our invention into practice as follows
We cast the pulley, wheel &c. with a rectangular opening through the boss in place
of the usual round hole.
The rectangular opening is adapted to receive two adjustable sliding blocks or
V pieces which may be made to approach or recede from each other and which receive
the shaft between them.
The sliding blocks are tightened up to the shaft by two set screws. By varying
the degree of opening between the sliding blocks it is obvious that one and the
same pulley may be secured to shafts of different diameters ranging within certain
limits.
We sometimes use three or more sliding blocks.
We use the same device for loose pulleys, by placing a bored and turned bush
or socket of the required size between the sliding blocks and in this way the same
"fast
pulley may be used either as a
"
$8
or loose."

page_text: In order that our invention may be fully understood we will describe the same
by reference to the accompanying drawings, in which figure 1 shows a pulley with
a rectangular opening and fitted with sliding blocks, figures 2 is a section of pulley
showing the sliding blocks set upon the shaft, figure 3 is a section of boss of
pulley fitted with bush or socket as used for a loose pulley. Similar letters in all
the figures represent similar parts.
a, is the rectangular opening cast in pulley to receive sliding blocks b: b.
which are made to approach or recede from each other by set screws c. c. to tighten
or fix upon the shaft d, e is the turned bush or socket placed between the sliding
blocks b. b. so as to run loose on shaft d:
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. The use of adjustable sliding blocks or V pieces made and fitted into a
rectangular opening in a Pulley, Rigger, Disc or wheel which may be made
to approach or recede from each other to suit shafts or spindles of different
diameters.
2. The use of three adjustable sliding blocks or ✓ pieces made and fitted into
a suitably formed opening in a Pulley, Rigger, Disc or wheel which may be
made to approach or recede from each other to suit shafts or spindles of different
diameters.
3. The combination with a Pulley, or Rigger fitted with adjustable sliding blocks
or V pieces, of a turned bush or socket to be used as a loose pulley as hereinbefore
described.
Did J
1000
GEORGE SMITH.
EDWIN SMITH.