IMPROVEMENTS IN THE CONSTRUCTION OF FLY WHEELS AND PULLIES FOR ROPE DRIVING " SP
Year: 1883

page_text: LETTERS PATENT to William Hargreaves of the firm of Hick Hargreaves and
Company and Robert Harwood Manager both of Bolton in the County of
Lancaster for an Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
FLY WHEELS AND PULLIES FOR ROPE DRIVING
"
PROVISIONAL SPECIFICATION left by the said William Hargreaves and
Robert Harwood at the Office of the Commissioners of Patents on the
6th April 1883.
WILLIAM HARGREAVES, of the firm of Hick, Hargreaves and Company, and
ROBERT HARWOOD, Manager, both of Bolton in the County of Lancaster.
"IMPROVEMENTS IN THE CONSTRUCTION OF FLY WHEELS AND PULLIES FOR ROPE-
DRIVING".
This invention relates to an improved method of making or forming Fly-wheels
for Steam Engines and pullies in mill-gearing, when intended to drive power by the
means of ropes or bands; and consists in a novel way of forming the periphery or
rim with grooves; together with the means for supporting the same from the centres
or bosses from the shaft on which they revolve.
In making the periphery or rim of a Fly Wheel pulley with grooves to receive
ropes or bands, we employ bars of wrought iron, steel or other equivalents, rolled to
a suitable section of the requisite diameter or otherwise, provided with one or more
grooves in a ring, the outside of each ring being provided with a vertical circular
flange extending inwardly, which is utilized for bolting or rivetting the segments
together, as well as supporting the same on the transverse T irons or other
equivalents, which are provided for carrying the saine. The grooved ring or rings
may be made either solid or hollow on the inner or base side, (the latter being
preferable) so as to ensure lightness combined with strength.
In the case of a pulley or fly-wheel requiring a quantity of ropes, we make the
periphery in rings containing a few grooves each; the outer edges being provided
with the aforesaid vertical circular flanges, forming one-half of a groove, to which
if it is desired other grooves may be added, being bolted or rivetted too, without
disturbing the remaining parts. When the pulley is too-large to have the rings

page_text: rolled in one, they are made in segments, composed of break-joints placed alter-
nately, being put together without either bolts or rivets in the transverse joints,
and bolted or rivetted together circumferentially through the aforesaid internal
vertical circular flanges.
Instead of the ordinary arms for supporting the rim, we employ uprights of
Tiron or other suitable section, braced or stayed crosswise with T iron or other
equivalents, placed back to back and secured with either bolts or rivets. The
uprights are securely bolted to a centre boss or bosses specially prepared for them,
on the outside of which are bolted or rivetted web plates composed of wrought iron,
steel or other equivalents; made in suitable lengths and forms to cover the desired
space between each upright, and which extends from the centre boss or bosses to
the underside of the grooved rim; being bolted or rivetted at the top to the vertical
circular flange underside the same. For the purpose of enabling the bolts or rivets
being examined, or repairs, and the purpose of making, we provide the web plates
with manholes placed at suitable distances, which may be open or otherwise.
On the top of the braces forming the arms are placed transverse T irons or other
supports, to which they are bolted or rivetted, thus serving as top stays or guides,
forming the bed for carrying the grooved rim or rims. On the outer ends or
otherwise of these transverse T irons, are placed suitable L irons rivetted or bolted,
and over the vertical side of which the grooved rim sits, being bolted or otherwise
laterally.
The grooved rim or rings are divided in the centre of a groove, thus when two
or more rings are placed together, the part forming the joint forms a groove, thus
making a complete and equally distributed grooved rim or periphery, the outer
sides of the rim forming half a groove; so that when it is desired to increase the
number of grooves on the pulley, it is accomplished by bolting or rivetting a similar
groove or grooves to it.
In making smaller pullies on this principle suitable for mill-gearing, the
peripheries or grooved rims are made in the way already described, and which can
be made with one groove or more rolled in one complete ring or otherwise, provided
with the necessary vertical flanges for securing the same to the circular webs which
substitute the arms, or to the T or L irons for strengthening the same, and which
can be placed either vertically or diagonally as desired.
An important feature in these pullies is the way in which the vertical circular
flange or flanges underside the periphery are grooved or recessed in the joint, for
receiving the outer edge of the circular plates or webs, substituting the arms, and
through which the bolts or rivets pass, when two or more rings are put together,
for securing the same. The bosses of these pullies are made of cast iron, steel or
other equivalents, being provided with bosses or flanges for securing the inner edge
of the circular web plate or plates with bolts, rivets or other equivalents.
In both cases when the pullies are put together by fitting or otherwise, the
grooves are turned to a true shape in a lathe in the ordinary way or otherwise.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Hargreaves and Robert Harwood in the Great Seal
Patent Office on the 5th October 1883.
WILLIAM HARGREAVES of the Firm of Hick Hargreaves & C° and ROBERT
HARWOOD, Manager, both of Bolton in the County of Lancaster IMPROVEMENTS IN
THE CONSTRUCTION OF FLY-WHEELS AND PULLIES FOR ROPE-DRIVING."
This Invention relates to an improved method of making or forming Flywheels
for steam engines and pullies in Mill-gearing when intended to drive power by the
means of ropes or bands, and consists in a novel way of forming the periphery or
rim with grooves, together with the means for supporting the same from the centres
or bosses from the shaft on which they revolve.
In making the periphery or rim of a fly wheel pulley with grooves to receive
ropes or bands, we employ bars of wrought iron, steel or other equivalents, rolled
to a suitable section of the requisite diameter or otherwise, provided with one or
more grooves in a ring, the outside of each ring being provided with a vertical
circular flange extending inwardly, which is utilized for bolting or rivetting the
segments together, as well as supporting the same on the transverse T irons or
other equivalents which are provided for carrying the same. The grooved ring or
rings. may be made either solid or hollow on the inner or base side (the latter
being preferable) so as to ensure lightness combined with strength.
In the case of a pulley or fly wheel requiring a quantity of ropes, we make the
periphery in rings containing a few grooves each the outer edges being provided
with the aforesaid vertical circular flanges, forming one half of a groove to which
if it is desired other grooves may be added, being bolted or rivetted to, without
disturbing the remaining parts. When the pulley is too large to have the rings
rolled in one, they are made in segments composed of break joints placed alter-
nately, being put together without either bolts or rivets in the transverse joints, and
bolted or rivetted together circumferentially through the aforesaid internal vertical
circular flanges.
The
Instead of the ordinary arms for supporting the rim, we employ uprights of
Tiron or other suitable section braced or stayed crosswise with T iron or other
equivalents placed back to back and secured with either bolts or rivets.
uprights are securely bolted to a centre boss or bosses specially prepared for them,
on the outside of which are bolted or rivetted web plates composed of wrought
iron, steel, or other equivalents, made in suitable lengths and forms to cover the
desired space between each upright, and which extends from the centre boss or
bossos to the underside of the grooved rim, being bolted or rivetted at the top to
the vertical circular flange underside the same. For the purpose of onabling the
bolts or rivets being examined, or repairs, and for the purpose of making, we provide
the web plates with manholes placed at suitable distances, which may be open or
otherwise
On the top of the braces forming the arms are placed transverse T irons or other
supports, to which they are bolted or rivetted, thus serving as top stays or guides
forming the bed for carrying the grooved rim or rims. On the outer ends or
otherwise of these transverse 1 irons, are placed suitable L irons rivetted or bolted
and over the vertical side of which the grooved rim sits, being bolted or otherwise
laterally
The grooved rim or rings are divided in the centre of a groove, thus when two or
more rings are placed together, the part forming the joint forms a groove, thus
making a complete and equally distributed grooved rim or periphery; the outer

page_text: sides of the rim forming half a groove, so that when it is desired to increase the
number of grooves on the pulley, it is accomplished by bolting or rivetting a similar
groove or grooves to it.
In making smaller pullies on this principle suitable for mill gearing, the
peripheries or grooved rims are made in the way already described, and which can
be made.with one groove or more rolled in one complete ring or otherwise, provided
with the necessary vertical flanges for securing the same to the circular webs which
substitute the arms, or to the Ť or Ĺ irons for strengthening the same, and which
can be placed either vertically or diagonally as desired.
An important feature in these pullies is the way in which the vertical circular
flange or flanges underside the periphery are grooved or recessed in the joint for
receiving the outer edge of the circular plates or webs substituting the arms, and
through which the bolts or rivets pass, when two or more rings are put together for
securing the same-The bosses of these pullies are made of cast iron, steel or other
equivalents, being provided with bosses or flanges, for securing the inner edge of
the circular web plate or plates with bolts, rivets, or other equivalents.
In both cases when the pullies are put together by fitting or otherwise the
grooves are turned to a true shape in a lathe in the ordinary way or otherwise.
In order that our said invention may be fully understood and readily carried
into operation, we will now proceed to describe the accompanying drawings,
reference being made to the figures and letters marked thereon.
Fig: 1 is a part sectional and part front elevation of a rope pulley or fly-wheel
for a steam engine or otherwise, when intended for driving power by means of
ropes or bands. Fig: 2 is a part trausverse section of same.
The periphery or rim A is formed in segments of wrought iron, steel or other
equivalents rolled to a suitable section according to the size of rope or band
required, with one or more grooves in a ring, the outside of each ring being
provided with the vertical flange B extending inwardly. In making a pulley to
coutain a number of ropes the flanges B aro jointed together with the bolts C or
their equivalents such as rivets: the botton or inner edge resting or sitting on the
transverse Tirons D, which may be substitutod with angle iron singly or double
placed back to back as desired.
In case a pulley or fly wheel is too large in diameter to obtain the rim or grooved
rings rolled in one, they are made in segments the joints being placed alternately
to break joint to ensure strength, being fitted together and bolted or rivetted with
the bolts or rivets C circumferentially through the flanges B.
a
The arms for connecting or supporting the rim are composed of the Tiron
uprights F, or they can be made of any other suitable section, being braced or
stayed crosswise by the T iron bars G, placed back to back and secured by the
bolts or rivets H. The uprights are secured to the centre boss or bosses I
specially prepared for them by the bolts J. On the outside of the uprights F are
placed the metallic web plates K and secured by the bolts or rivets L made in
suitable lengths and forms to cover the desired space between each upright or any
number of uprights extending from the centre boss or bosses I to the underside of
the grooved rim or periphery A. being secured to the flanges B by means of the
bolts or rivets C. We do not confine ourselves to make the web plates K in one
length, as in some cases this might be impossible, therefore we reserve to ourselves
the right to compose such plates of varying lengths bolted or rivetted together as
desired.
On the top or outer ends of the uprights F and braces G we place the transverse
Tirons D which may be substituted with supports of any other suitable section
being secured by the bolts or rivets H, which serve as top stays or guides as well
as forming the bed or seat for carrying the grooved rim or periphery A. To give
stability to the overhanging ends of the rim and secure the same to the transverse
Tirons D, we provide the angle irons M which are rivetted or bolted to the latter
as well as the vertical flange B laterally.
To ensure perfect workmanship and form an equally distributed grooved rim or

page_text: periphery, we divide or joint the rings in the centre of a groove, the outer edge
being provided with the vertical flanges B, the upper part forming one half of a
groove, thus, when two or more rings are placed together the part forming the
joint makes a complete groove, which in case of increasing the number of grooves
on a pulley, it can be done easily by simply bolting or rivetting a similar groove or
grooves to it.
An important feature in the manner of jointing the grooves is that
of placing the joint so as not to come into contact with the ropes or bands being
driven, which under the old system the joint is formed in the centre of the flanges
between the ropes, by which it is impossible to insure perfect workmanship
together with the liability of cutting the ropes in case of slipping off, or when
putting them on, as well as giving an unequally distributed grooved rim
The grooved ring or rings may be made hollow or corrugated on the inner or base
side as shewn in Figs: 1 to 8, which we prefer, so as to ensure lightness combined
with strength, or they can be made solid or straight on the base side as shewn in
Fig: 10.
To enable the bolts or other equivalents by which the structure is held together
being examined, or in the case of repairs or when making, we provide the man-
holes N in the web plates K at suitable or convenient distances, which may be
open as shewn, or closed with a suitable covering plate fastened with set screws or
other equivalents.
In applying our improvements to pullies of small diameter suitable for Mill-gearing
or other similar work, the peripheries or grooved rims A are rolled in a complete
ring or otherwise, being provided with the vertical flanges B for securing the same
to the circular webs K, which substitute the arms, the latter being placed vertically
as shewn in Figs: 3. 4. 5. 6 and 7 or diagonally as in Fig 8.
Figs. 3. 4 and 10 shew another way we employ for connecting the rings together,
the vertical or circular flanges B are grooved or recessed in the joint, half the
thickness of the web plate K, thus when two rings are put together the circular
recess S is just the width of the thickness of the web plate, which is inserted and
bolted or rivetted by the bolts or rivets C.
Figs. 5. 6. 7 and 8 shew another way we employ of forming these pullies without
the means of extending or increasing the number of grooves, in which case the
vertical flanges B are not recessed but made plain, the web plates K. being bolted
or rivetted in the usual way
The bosses I are made of Cast Iron, steel or other equivalents, which are provided
with the bosses or flanges P for securing the inner edge of the circular web plate or
plates K with the bolts or rivets C.
Fig 9 is a side view of these pullies shewing the whole complete with the man
or hand holes N for the purpose of construction or repairs, to enable the bolts or
rivets to be put in their places, being placed in convenient positions of any desired
number or size according to the diameter of the pulley or pullies being made. In
case it is desired to place another pulley along side one of those shown in Figs, 5,
6, 7 and 8, so as to couple them together and maintain the uniformity of pitch of
the ropes, we recess the outer rims of each pulley coming together as at R in
Fig. 11.
When pullies made on our principle are put together, whether by being fitted or
otherwise, the grooves are turned to a true shape and perfectly smooth in a lathe
in the ordinary way, or by other suitable or convenient means.
Having thus stated the nature of our invention and described the mode of
performing the same, we would have it understood that we do not confine ourselves
to the precise details or configuration of the parts we have shown and described as
the same may be varied or modified without departing from the principle of our
invention, but what we claim and desire to be secured to us by Letters
Patent is :-
First. The Construction and use of the rolled grooved rims, circular or segmental,
provided with the vertical circular flanges B for jointing the rings together, and
supporting same on the transverse T irons D, as well as securing them to the web

page_text: -
plates K, substantially as described and shewn on the drawings, or any mere
modification thereof.
Second. The construction and use of the rolled grooved rim or rims, circular or
segmental, provided with the recesses S in the vertical flanges B for receiving the
outer edges of the web plates K, substantially as described and shewn on the
drawings.
Third-The construction and use of the rolled grooved rims the outer side of
which together with the vertical flange B forms half a groove, thereby facilitating
the formation of other grooves, without interfering with the other parts of the
pulley, substantially as herein stated and shewn on the drawings
Fourth-The improved construction and arrangement of Fly Wheels or other
pullies for the purpose herein described, and as shewn on the drawings in Figs. 1
to 11.
:
In witness whereof I the said Robert Harwood, on behalf of the said William
Hargreaves and myself, have hereunto set my hand and seal this twenty ninth
day of September in the year of our Lord one thousand eight hundred and eighty
three
ROBERT HARWOOD (L.S.)