Improvements in Pulleys.
Year: 1892

page_text: Date of Application, 9th Feb., 1892
Complete Specification Left, 9th Dec., 1892-Accepted, 4th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Pulleys.
I, Claude Theodore James Vautin of 42 Old Broad Street, in the City
of London, Metallurgist, do hereby declare the nature of my invention to be as
follows:-
My invention relates to pulleys or wheels used for transmitting power, and has
for its object the construction of such pulleys in a simple effective and inexpensive
manner, by the employment of compressed or hardened paper, leather or other
vegetable pulp in combination with wood, iron or other similar material.
To carry out my invention I take a short length of tube of pulp of the same
diameter as the pulley is to be, to form the rim of the pulley, and upon the internal
periphery of this rim I fix two rings of the same material, spaced apart to form
a groove in the middle of the rim.
Within this groove I fix a compressed pulp disc centre piece of pulp so as to be
tightly held therein to form the boss and arms or their equivalent of the ordinary
pulley.
I preferably perforate this disc for lightness.
The boss of the pulley is then bored to the right size and side pieces of hardened
pulp or of wood, iron or other suitable material are bolted on each side of the centre
disc to give additional strength to the boss and rigidity to the pulley.
The pulley so made may be split and held together by bolts clips, or other
suitable means, the jointing of the two half rims being kept together by strips of
metal bolted to the rims in the usual way.
Instead of using one centre piece I may use two or more either bolted together or
spaced apart to give a longer bearing for the boss on the shafting.
To ensure there being no relative movement between the centre piece and rim I
provide means for locking them together which may consist of pieces of metal let in
to the periphery of the centre piece or pieces and fixed to the rim by bolts, screws
or other suitable means.
Dated this 9th day of February 1892.
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Pulleys.
I, CLAUDE THEODORE JAMES VAUTIN of 42 Old Broad Street, in the City
of London, Metallurgist, 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:-
My invention relates to pulleys or wheels, used for transmitting power, and has
for its object the construction of such pulleys in a simple, effective, and inexpensive
manner, by the employment of compressed or hardened paper pulp, or other leather
or vegetable pulp, in combination with wood, iron, or other similar materials.
And in order that my invention may be the better understood I now proceed to
describe the same in relation to the drawings hereto annexed, and to the letters and
figures marked thereon.

page_text: Figures 1 and 2 are a vertical section and side elevation respectively of one form
of my improved pulley with wooden bosses.
Figures 3 and 4 are a vertical section and side elevation of a pulley with two
discs and internal wooden boss.
Figures 5 and 6 are a vertical section and side elevation respectively of a modified
form of my improved pulley, with metal boss.
Figures 7 and 8 are a vertical section and side elevation respectively of a
further modified form of my improved pulley, with a metal telescope boss.
Figure 9 is a sectional elevation of a specially wide pulley, with metal boss and
several discs.
To carry out my invention I make the rims A of my pulley in the form of a
cylindrical tube of pulp fibre, of the proper diameter to suit the size of pulley
required, and cut the said cylindrical tube into the required widths of rim. The
manufacture of the rim in this fashion is important, as by known patented pulp
processes granted to J. R. Thame under No. 346 and dated the 9th day of January
1888 as applied to barrels or sheets, a rim of great toughness and hardness can be
produced and water-proofed, in a manner that could not be effected, were the whole
pulley to be made from pulp in a mould or press.
To attach this rim to its boss I employ discs B, instead of arms, of the same pulp
fibre, perforated or plain, and produced as homogeneous, tough, hardened, or water-
profed sheets, which are fixed as to their position to the rim by forming a groove
on the interior of the periphery, preferably by means of added strips of pulp
fibre CC, leaving a groove for the body disc between, or by means of angle
irons D D forming a groove between them. The discs B B are then further
secured to the rim by screws a a through the rim or bolts through the angle
irons a¹ a¹.
I attach the centre of these discs B which may be perforated with suitable holes,
to an added boss E E of wood as in Figures 1, 2, 3 and 4; or of metal,
Figures 5, 6, 7, 8 and 9, and secure the discs thereto by through bolts b b.
The discs, rims, and bosses may be split across a diameter as shown, to form split
pulleys, and in such case are bolted together as regards the bosses by bolts d d and
the rims may be kept together by strips of metal within the periphery being
screwed to the rims. These bosses of wood or iron may be made in a variety of
ways, of which convenient examples are shown in the drawings annexed hereto, and
are bored to suit the diameter of shaft they are required for.
The pulp fibre rims are also capable of being turned, should this be required,
but a very true and smooth face may be produced by pressure, rolling or
planishing.
Where the pulleys are of extra width I may use two or more discs B B,
Figures 3 and 9, to support the rim at several points upon an elongated boss.
In Figure 3 the two discs B B are conveniently placed outside the internal
boss E, of wood or metal; perforations F being provided in the discs through
which the bolts d d of the split boss may be got at.
In Figure 9 the boss E is provided with a series of flanges ff to which the discs
are attached by bolts. A direct drive between the discs B B B and the rim A
is given by a through bolt G engaging in internal lugs H rivetted or bolted to
the rim A.
In Figure 8, the disc is provided with a dovetailed periphery gg which is recessed
into the body of the rim, a direct drive being given by screws through the rim.
In Figure 4 the pieces C are halved into the disc and recessed into the rim giving
a direct drive between the disc and rim.
Instead of using one centre piece or boss, I may use two or more either bolted
together as in Figure 7, or spaced apart to give a longer bearing on the shafting.
I may use also, to produce direct drive between the discs and rims, pieces of
metal let into the periphery of the disc centre, and fix them to the rim by bolts
screws or other means.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1st. A pulp-fibre pulley, split or otherwise, in which the rim is moulded,
hardened and water-proofed, as a separate part and is united to a boss of metal,
wood or other material, by pulp-fibre discs, plain or perforated, substantially as
described.
2nd. In a pulp-fibre pulley, split or otherwise, a rim separately moulded, hardened
and water-proofed, provided with an internal groove, formed by pulp fibre or angle
irons; in combination with a body disc and a boss attached thereto of metal, wood,
or other material, substantially as described.
3rd. In a pulp-fibre pulley, split or otherwise, a rim separately moulded,
hardened, and water-proofed, in combination with two or more body discs, and a
lengthened boss attached thereto, of metal, wood, or other material, substantially as
described.
4th. The combination of a separately moulded, hardened, and water-proofed rim,
with disc body pieces, perforated or plain, and a boss or bosses of metal, wood, or
other material, all attached to one another, substantially as and for the purposes
described, in relations to the drawings hereto annexed.
Dated this 8th day of December 1892.
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.