IMPROVEMENTS IN PULLEYS FOR TRANSMITTING MOTION
Year: 1883

page_text: "
"
LETTERS PATENT to William Robert Lake of the firm of Haseltine Lake
& Co, Patent Agents Southampton Buildings London for an Invention of
IMPROVEMENTS IN PULLEYS FOR TRANSMITTING MOTION communicated to
him from abroad by Harmon Healy Fulton and Olaf Rye Olsen both of
Indianapolis Indiana United States of America
PROVISIONAL SPECIFICATION left by the said William Robert Lake at
the Office of the Commissioners of Patents on the 1st May 1883.
WILLIAM ROBERT LAKE, of the firm of Hasletine, [sic] Lake and Co., Patent Agents,
Southampton Buildings, London "IMPROVEMENTS IN PULLEYS FOR TRANSMITTING
MOTION [A communication to him from abroad by Harmon Healy Fulton and
Olaf Rye Olsen both of Indianapolis Indiana United States of America]
"
This invention relates to that class of pulleys the web and rim of which are
constructed separately, and afterwards united.
In carrying the said invention into practice I provide a web consisting of
corrugated sheet metal. The hub is mounted on the shaft in the ordinary manner,
and except in being corrugated to fit the corrugated sheet metal web, is of a well
known form. The corrugations on one are formed to fit into those of the other, so
as to clamp the web tightly when said web is placed between them; I make the
hub in two parts.
The web is made of any kind of sheet metal desired, a light tough sheet steel
being deemed preferable. The corrugations may be circumferential, or radial, or
serpentine, as may be desired or preferred by the maker of the pulleys; it being
obvious that nearly any form of the corrugations will serve the purpose of stiffening
sheet-metal so that it will be a fit material for pulley webs.
The rim is made of sheet or hoop metal and is secured to the web by rivets.
Small angle irons may be employed, or projections may be cut on the edge of the
web, and bent each way to take the place of the separate angle irons.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Robert Lake in the Great Seal Patent Office on the
1st November 1883.
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, London "IMPROVEMENTS IN PULLEYS FOR TRANSMITTING
MOTION A communication to me from abroad by Harmon Healy Fulton and
Olaf Rye Olsen, both of Indianapolis, Indiana, United States of America
"
This Invention relates to that class of pulleys the webs and rims of which are
constructed separately and afterward attached together
The said invention consists partly in providing a pulley of this class with a
web composed of corrugated sheet metal
It also partly consists in providing means for attaching sheet metal webs to
iron-pulley rims.
In the accompanying drawing,
Figure 1 is a side elevation of a pulley constructed according to this invention
Figure 2 is a central vertical section on the line z z Figure 1..
Figure 3 is a view similar to Figure 1'illustrating a modification.
Figure 4 is a section of the same on the line y y.
Figure 5 is a horizontal sectional view on the dotted line xx Figure 3.
Figure 6 is a side elevation of a pulley shewing the ears or flanges for connecting
the webs to the rims
Figure 7 is a central vertical section of the same, and
Figure 8 is a view of a fastening drawn to an enlarged scale
Figures 9 to 13 are views hereinafter described illustrating modified forms of
the devices for securing the web of a pulley to the rim.
Referring to Figures 1 to 5 A indicates the shaft on which the pulley is mounted,
B the hub, C the web, and D the rim.
The hub B is mounted on the shaft A in the ordinary manner and except in
being corrugated to fit the corrugated sheet metal web, is of a well known form.
The corrugations on one are formed to fit those of the other so as to clamp the
web tightly when the said web is placed between them.
The web C is made of any kind of sheet metal desired, a light tough sheet
steel being deemed preferable. The corrugations may be circumferential as shewn
in Figure 1, or radial as shewn in Figure 3, or serpentine as may be desired or
preferred, it being obvious that nearly any form of corrugations will serve the
purpose of stiffening sheet metal so that it will be a fit material for pulley-webs
and I do not therefore limit myself in this particular.
The rim D is an ordinary sheet or boop metal rim, and is secured to the web by
rivets. Small angle irons may be employed; or projections may be cut on the
edge of the web and bent each way, as shewn, to take the place of the separate
angle-irons.
One method of fastening the web to the rim is illustrated in Figures 6 to 8. In
this case the web C has ears or flanges c formed on the edge and bent out each
way to fit against the underside of the rim. These ears are manifestly very much
superior to angle-irons in the matter of durability and cheapness, as angle irons
must be not only formed separately, but also rivetted separately to the sheet-metal
web, and the strain will then come upon the small portions of metal covered by
the rivets instead of upon the whole size of the ears. The rim, however, is
necessarily secured to these ears by rivets d but there is not the same strain on

page_text: these rivets as on rivets passing through the web, the rim being of stiffer material,
and therefore forming a firmer support, the strain also comes in a different
direction, and one which is less liable to tear loose the fastenings than in cases
where the rivets pass through the web
Another method of fastening the web to the rim is shewn in Figure 9 which is
a vertical section of a portion of a pulley in which T indicates the tire or rim,
w the web of corrugated sheet metal, and f f angle-arms, which may be of any
desired length, or may extend clear around the rim on the under side. The web is
bolted through between the angle irons, and these latter are bolted to the rim
with tire-bolts
.
Figure 10 is a side view. illustrating another method of attachment. The web w
is corrugated vertically or it may be corrugated radially, and lugs are bolted to
the side of the web and have heads which pass through the rim T and are rivetted
down flush with the outside of the rim.
Figure 11 is a cross section of the rim and a vertical section of the web and lug
shewn in Figure 10.
Figure 12 is a vertical section of a part of a pulley illustrating another method
of fastening. As before, T indicates the rim, and w the web. A T-shaped
piece e is bolted to the rim with tire-bolts and to its downward projecting flange i
the web is bolted, a square plate or washer p being placed on the other side of the
webs, as shewn.
As shewn in Figure 13 the piece é is provided with two flanges jf between
which the web w enters, a bolt being passed through all to secure the web to
the rim.
In Figure 14 the rim T is shewn as having scalloped-shaped ears e integral
therewith to which ears the web w is bolted. Instead of these ears a continuous
flange integral with the rim could be used
Having thus fully described the said invention as communicated to me by my
foreign correspondents, and the manner of performing the same, I wish it understood
that I claim:-
First. In a pulley, the combination, with the hub and rim, of a web formed of
corrugated sheet metal, substantially as set forth.
Second. The combination of the hub B formed of two parts with corrugated
faces, the web C corrugated and formed to fit between the two parts of the hub,
and the rim D secured to the periphery of the web, substantially as, and for the
purpose, set forth.
Third. In a pulley the web of which is composed of sheet metal, the ears c
formed integrally with the said web, and serving as means for fastening the same
to the rim, substantially as set forth.
Fourth. In a pulley, the combination of a sheet metal web C having ears o
formed integrally therewith and extending out at right angles on each side thereof,
and the rim D secured to the said web by means of the said ears and the rivets d,
substantially as shewn and specified.
Fifth. A pulley wherein a corrugated metal web is secured to the underside of a
solid rim by means of angle-irons, substantially as described with reference to
Figure 9 of the drawing.
Sixth. A pulley wherein a corrugated metal web is secured to a solid rim by
means of plates bolted to the web and headed down through the rim, substantially
as described with reference to Figure 10 of the drawing
Seventh. A pulley wherein a corrugated metal web is secured to the inner side
of a solid rim by means of a T-shaped piece e, substantially as described with
reference to Figure 12 of the drawing.
Eighth. A pulley wherein a corrugated metal web is secured between the two
flanges of a piece bolted to the rim, substantially as described with reference to
Figure 13 of the drawing.
Ninth. A pulley wherein a corrugated web is secured to a rim by means of ears

page_text: which are integral with the said rim, substantially as described with reference to
Figure 14 of the drawing.
•
Tenth. A pulley wherein a corrugated web is secured to a rim by means of a
continuous flange on the inner side of the rim and integral therewith, substantially
as described.
In witness whereof I the said William Robert Lake have hereunto set my hand
and seal this Thirty first day of October in the year of our Lord One thousand
eight hundred and eighty three