Year: 1888

page_text: Date of Application, 21st July, 1888
Complete Specification Left, 23rd Apr., 1889
Complete Specification Accepted, 1st June, 1889
I ARTHUR PAGET Mechanical Engineer of Radinoor Loughborough in the County
of Leicester do hereby declare the nature of this invention to be as follows:-
The object of my invention is the construction of pulleys for use with belts, ropes
(and the like) which shall be especially light, strong, elastic (or not brittle) and shall
give to the rope or belt an increased grip" upon the pulley and increased durability
and shall cause the belt or rope to run more silently.
The first part of my invention consists of the construction and use of one or more
plates or disks of steel (or metal of similar quality) to take the place of the ordinary
arms of pulleys, such plates being rivetted, screwed, bolted or otherwise suitably
attached to a suitable "boss" of cast iron, steel (or other similar suitable metal) and
to a rim of wood (or similar material) the said plates or disks being ordinary flanged
at the periphery for convenience in attaching the rim to the disks. In some cases the
disks may be split or divided radially in such a manner that the said plates or disks
are divided partially or completely into segments. In some cases the said segments
or portions of the plate or disk (where only one disk is used) may be "flanged" or
bent over at right angles to the plates alternately towards opposite sides to aid in
attaching the wood rim to the disk.
The second part of my invention consists of the arrangement and use of one or
more grooves cut into each of the outer edges or faces of the wood segments forming
the periphery of a pulley (having metal plates or disks instead of the usual arms).
Into these grooves I insert a tongue" or "tongues" or hoop of wood, iron or other
suitable material, thus the rim of the pulley is firmly held together at the edges or
faces.
"
The third part of my invention consists of the construction and use of pulleys having
metal plates, segments, or disks in place of the ordinary arms and wood or metal rims,
the said rims being "faced" with cork, corticine, linoleum, or other similar elastic
upon the face
substance so as to give the belt or rope an increased "grip" or "hold
or groove of the pulley and an increase of durability and silence in running.

page_text: The fourth part of my invention consists of the construction and use of one or more
plates, segments or disks of steel (or metal of similar quality) to take the place of the
usual arms of pulleys as in the first part of my invention but with the boss "cast
on to the said disks or segments of disks.
وو
"
The fifth part of my invention consists of the construction and use of a "split-pulley'
with metal plates or half-disks in segments or otherwise (instead of the ordinary arms)
and two half rims of wood or similar material, the two halves of the pulley being held
together and gripped on to the shaft by two U shaped bolts (made to embrace the
boss) one on each side of the disks, the screwed ends of the said bolts passing through
two suitable "saddles or "clamps" and thus embracing the two halves of the boss of
the pulley.
"
The sixth part of my invention consists of the construction and use of a "split-
pulley" with metal plates or disks in segments or otherwise instead of the ordinary
arms, and a rim of wood or similar material. The two halves being held together by
one or more U shaped bolts and "saddles or "clamps" between the two metal
plates or disks; holes being left in the rim of the pulley or in the disks through which
the said U bolt or bolts can be tightened up.
وو
The seventh part of my invention consists of the construction and use of pulleys
(having rims of wood or similar material in combination with metal plates, segments
or disks instead of the ordinary arms) the bosses of which are cast upon a suitable
"chill" or hard core in such a manner and of such a material that when cast the hole
in the boss will be correct to sizes and position and so will not require boring.
The eighth part of my invention consists of the construction and use of a rim made
of wood or other similar material for belt pulleys, such rim being attached to steel or
other suitable disks or segments and such rim having cut, formed or impressed on its
working face a number of fine grooves or ribs which will allow of the escape side-ways
of the air between the belt and the pulley and will increase the grip or hold of the
belt on the face of the rim of the pulley.
Dated thi. 20th
7000

page_text: Improvements in Pulleys for Belts or Ropes.
I ARTHUR PAGET, Mechanical Engineer of Radmoor Loughborough in the County
of Leicester, 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 my invention is the construction of pulleys for use with belts, ropes
(and the like) which shall be especially light, strong, elastic, (or not brittle) and shall
give to the rope or belt an increased grip" upon the pulley and increased durability
and shall cause the belt or rope to run more silently.
The first part of my invention which 1 will describe consists of the construction and
use of one or more plates or disks of steel (or metal of similar quality to take the place
of the ordinary arms of pulleys, such plates being rivetted screwed, bolted or other-
wise suitably attached to a suitable "boss" of cast iron, steel, (or other similar suitable
metal) and to a rim of wood (or similar material) the said plates or disks being
ordinary flanged at the periphery for convenience in attaching the rim to the
disks.
In some cases the disks may be split or divided radially in such a manner that the
said plates or disks are divided partially or completely into segments.
In some cases the said segments or portions of the plate or disk (where only one
disk is used) may be "flanged" or bent over at right angles to the plates alternately
towards opposite sides to aid in attaching the wood rim to the disk.
Figures 1. 2. and 2ª sheet 1 show a pulley such as herein referred to. Figure 1 is a
part section on the line A. B and Figure 2 is a side view and Figure 2A is a part
section on the line X Y of a pulley with two plates or disks CC. These plates or
disks are shown in this case as rivetted to a suitable "boss" C¹ with the aid of the two
rings C C. The edge at the periphery of each of the plates C'is flanged as shown so
as to allow of the wood rim (being screwed or fixed on to the said plates by suitable
screws C. In some cases I divide or split the said plates into two or more segments
as shown at Figure 2 sheet 1 and Figure 4 sheet 2.
In some cases the said segments or portions of the plate or disk (where only one
disk is used) may be flanged or bent over at right angles to the plate alternately
towards opposite sides to aid in attaching the wood rim to the disk as shown in
Figures 5 and 6 sheet 3.
In some cases where the plates or disks C are divided into halves (or "split") I
stiffen and strengthen them by coupling plates C which in some cases I rivet to one
segment and bolt to the other as shown.
The second part of my invention.which I will describe consists of the arrangement
and use of one or more grooves cut into each of the outer edges or faces of the wood
segments forming the periphery of a pulley (having metal plates or disks instead of
the usual arms). Into these grooves I insert a "tongue" or
" tongues" or hoop of
wood iron or other. suitable material, thus the rim of the pulley is firmly held together
at the edges or faces.

page_text: The tongues referred to are shown at D Figures 1 to 8 sheets 1 to 4 and in most
cases I prefer to make these tongues of wood well glued into the rim of the
pulley.
The third part of my invention which I will describe consists of the construction and
use of pulleys having metal plates, segments, or disks in place of the ordinary arms
and wood or metal rims the said rims being "faced" with cork corticine, linoleum or
other similar elastic substance so as to give the belt or rope an increased "grip" or
"hold" upon the face or groove of the pulley and an increase of durability and silence
in running.
The fourth part of my invention which I will describe consists of the construction
and use of one or more plates, segments or disks of steel (or metal of similar quality)
to take the place of the usual arms of pulleys as in the first part of my invention but
with the boss "cast on to" the said disks or segments of disks as shown in Figures 3
to 6 sheets 2 and 3 and Figures 9 and 10 sheet 5.
In order to insure a firm attachment between the cast boss C₁ and the plates C
I bore, punch or otherwise make a number of holes C10 through the parts of the
plates C which are cast into the boss C¹ so that when cast the molten metal runs into
and through the said holes 010 and thus make a firm and rigid combination of the cast
boss C¹ and the wrought plates or disks C.
The fifth part of my invention which I will describe consists of the construction
and use of a "split-pulley" with metal plates or half-disks in segmets or otherwise
(instead of the ordinary arms) and two half rims of wood or similar material, the two
halves of the pulley being held together and gripped on to the shaft by two U shaped
bolts (made to embrace the boss) one on each side of the disks, the screwed ends of the
said bolts passing through two suitable "saddles "
"and thus embracing
or clamps"
the two halves of the boss of the pulley.
«
Figures 3 to 6 sheets 2 and 3 show two pulleys (one with a single plate or disk and
one with a double plate or disk) in halves (or "split") and fastened together as
herein referred to. EE are the U bolts which partially embrace the boss C². The
screwed ends of the said bolts pass through suitable "saddles or "clamps" (and
thus embrace the two halves of the boss of the pulley and firmly attach them to the
shaft.
"
"
"
The sixth part of my invention which I will describe consists of the construction
and use of a "split-pulley "with metal plates or disks in segments or otherwise
instead of the ordinary arms and a rim of wood or similar material. The two halves
being held together by one or more U shaped bolts and "saddles" or clamps
between the two metal plates or disks; holes being left in the rim of the pulley or in
the disks through which the said U bolt or bolts can be tightened up. This
arrangement is shown in Figures 7 and 8 sheet 4 and it will be seen that what is
generally known as a "box key can be easily introduced through the holes C and
thus the nuts of the U bolt can be readily tightened on to the saddle C and so secure
the pulley to the shaft.
The seventh part of my invention which I will describe consists of the construction
and use of pulleys (having rims of wood or similar material in combination with
metal plates, segments or disks instead of the ordinary arms) the bosses of which are
cast upon a suitable "chill" or hard core in such a manner and of such a material
that when cast the hole in the boss will be correct to sizes and position and so will not
require boring.
Figures 9 and 10 sheet 5 show this arrangement.
Figure 9 is an enlarged view of a part section of such a boss cast upon a
"chill" F.
Figure 10 is a part side view of such a boss.
"
I cast the boss C¹ upon the chill F (as a core") with "parting plates" F¹ inserted
into the mould in such a manner that they "split" or separate the boss C¹ into halves
and then when cold the chill F is easily removed.
The eighth part of my invention which I will describe consists of the construction
and use of a rim made of wood or other similar material for belt pulleys, such rim

page_text: being attached to steel or other suitable disks or segments, and such rim having cut
formed or impressed on its working face a number of fine grooves or ribs which will
allow of the escape sideways of the air between the belt and the pulley and will
increase the grip or hold of the belt on the face of the rim of the pulley.
Figures 11 and 12 sheet 5 show this arrangement.
Figure 11 shows a side view of a small section of such a rim and Figure 12 is a
plan of same.
Care the grooves referred to which may be cut compressed or otherwise formed
either at right angles to the edge of the rim as shown or at an angle there to as
desired.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I desire it to be understood
that I do not confine myself to the exact details herein set forth as such may be
varied or modified without departing from the principle thereof but what I claim as
my "Improvements in pulleys for belts or ropes' are:-
وو
First. The construction and use of one or more plates or disks of steel (or metal
of similar quality) to take the place of the ordinary arms of pulleys, such plates being
rivetted, screwed bolted or otherwise suitably attached to a suitable "boss" of cast
iron, steel (or other similar suitable metal) and to a rim of wood (or similar material)
the said plates or disks being ordinary flanged at the periphery for convenience in
attaching the rim to the disks.
In some cases the disks may be "split" or divided radially in such a manner that
the said plates or disks are divided partially or completely into segments.
In some cases the said segments or portions of the plate or disk (where only one
disk is used) may be "flanged" or bent over at right angles to the plates alternately
towards opposite sides to aid in attaching the wood rim to the disk substantially
as hereinbefore described with reference to Figures 1. 2. and 2ª sheet 1 and Figures 5
and 6 sheet 3.
Second. The arrangement and use of one or more grooves cut into each of the
outer edges or faces of the wood segments forming the periphery of a pulley (having
metal plates or disks instead of the usual arms). Into these grooves I insert a
"
tongue" or tongues" or hoop of wood, iron or other suitable material, thus the rim
of the pulley is firmly held together at the edges or faces substantially as hereinbefore
described with reference to Figures 1 to 8 sheets 1 to 4.
"
"
Third. The construction and use of pulleys having metal plates, segments or disks
in place of the ordinary arms and wood or metal rims, the said rims being "faced"
with cork, corticine, linoleum, or other similar elastic substance so as to give the
belt or rope an increased "grip
"hold
or
upon the face or groove of the pulley
and an increase of durability and silence in running substantially as here hereinbefore
described.
""
Fourth. The construction and use of one or more plates, segments or disks of steel
(or metal of similar quality) to take the place of the usual arms of pulleys as in the
first part of my invention but with the boss "cast on to " the said disks or segments
of disks substantially as hereinbefore described with reference to Figures 3 to 6
sheets 2 and 3 and Figures 9 and 10 sheet 5.
Fifth. The construction and use of a "split pulley" with metal plates or half disks
in segments or otherwise (instead of the ordinary arms) and two half rims of wood or
similar material, the two halves of the pulley being held together and gripped on to
the shaft by two U shaped bolts (made to embrace the boss) one on each side of the
disks the screwed ends of the said bolts passing through two suitable "saddles " ог
" clamps "and thus embracing the two halves of the boss of the pulley substantially
as hereinbefore described with reference to Figures 3 to 6 sheets 2 to 3.
Sixth. The construction and use of a "split-pulley" with metal plates or disks in
segments or otherwise instead of the ordinary arms, and a rim of wood or similar
material. The two halves being held together by one or more U shaped bolts and
"saddles" or "clamps "between the two metal plates or disks; holes being left in

page_text: the rim of the pulley or in the disks through which the said U bolt or bolts can be
tightened up substantially as hereinbefore described with reference to Figures 7 and 8
sheet 4.
Seventh. The construction and use of pulleys (having rims of wood or similar
material in combination with metal plates segments or disks instead of the ordinary
arms) the bosses of which are cast upon a suitable "chill" or hard core in such a
manner and of such a material that when cast the hole in the boss will be correct to
sizes and position and so will not require boring substantially as hereinbefore described
with reference to Figures 9 and 10 sheet 5.
Eighth. The construction and use of a rim made of wood or other similar material
for belt pulleys, such rim being attached to steel or other suitable disks or segments,
and such rim having cut, formed or impressed on its working face a number of fine
grooves or ribs which will allow of the escape sideways of the air between the belt
and the pulley and will increase the grip or hold of the belt on the face of the rim of
the pulley substantially as hereinbefore described with reference to Figures 11 and 12
sheet 5.