Improvements in Wheels or Pulleys.
Year: 1899

page_text: Date of Application, 19th Dec., 1899-Accepted, 17th Feb.,
1900
COMPLETE SPECIFICATION.
Improvements in Wheels or Pulleys.
I, FERDINAND PHILIPS, of 505, North Twenty First Street, in the City and
County of Philadelphia, in the State of Pennsylvania, one of the United States
of America, Manufacturer, 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 the construction of wheels and wheel rims, especially
rims of sheet metal, having particularly in view the formation rims for pulley
wheels, my prime object being to provide a wheel rim built up of segments which
will be at once strong, true, and of easy and cheap construction.
The essential feature if my invention in the construction of the rim consists
in forming a rim of sheet metal folded together intermediate of its edges to form
an inwardly extending two ply flange and folded outwardly from the top edges
of the two ply flange to form the face of the wheel. The edges of the folded plate
are also preferably folded inward to form strengthening ribs or flanges and the
plate having the T shaped cross-section described is curved in the plane of its
central flange to the desired curvature of the wheel face. The central flange of
the wheel rim section, constructed as above noted, serves for the attachment of
the spokes of the wheel centre and also serves to stiffen and make permanent the
curvature of the face of the rim, the edge flanges also serving the purpose of
stiffening and making permanent the curvature.
While my new rim can be used with hub and spoke constructions of various
kinds, I have especially designed for use with the T shaped rim sections a cast
iron wheel centre the spokes of which are bifurcated at the ends to permit the
entrance between its separated end lugs of the inwardly extending flange of the
rim which is secured to the spokes by rivets passing through the lugs and flange.
While especially designed for the particular sheet metal rim described my wheel
centres can obviously be used with rim sections of similar form irrespective of
their folding or mode of manufacture.
Reference being now had to the drawings in which my invention is illustrated.
Figure 1 is a sectional view of a split pulley having my improved rim and cast
iron centre, the section being taken as on the line 1-1 of Fig. 2.
Figure 2 is an edge view of the split pulley with the edge cut away on the
line 2-2 of Fig. 1.
Figure 3 is an enlarged view of the under side of the joint or union formed
between two abutted rim sections.
Figure 4 is an edge view at the joint shown on the same scale as Fig. 3.
Figure 5 is an edge view taken on the section line 5-5 of Fig. 3.
Figure 6 is a perspective view showing the folding of the end of the plate
forming the joint as represented in Figs. 3, 4 and 5.
Figure 7 is a perspective view showing a modified manner of folding the
plate at its end.
Figure 8 is a view of the inside of the joint formed by two abutted rim sections,
the joint here being of a modified and different character.

page_text: Figure 9 is an edge view of the modified joint, shown as on the section
line 99 of Fig. 8, and
Figure 10 is a view illustrating a convenient way of forming the joint when
the rim sections are used in making up the face of a solid pulley.
A A indicate the hub sections of the split pulley, said hub sections being
formed with outwardly extending perforated lugs A' and with radial spokes indi-
cated at A2 A³ etc. A indicate enlargements at the end of the spokes formed with
central slots, as indicated at a³, to receive the central flange of the rim. B B
indicate bolts by means of which the hub sections are secured together. CC
indicate rivets by which the lugs of the enlarged spoke ends A3 separated by the
slots a are firmly secured to the web of the rim. DD indicate rim sections con-
structed in accordance with my invention. They are formed of sheet metal
strips folded together intermediate of their edges so as to form longitudinal two-
ply folds indicated at DD. D² 12 are outward folds of the metal extending
from the top edges of the flange folds 1) and forming the face of the pulley or
wheel. D D indicate inwardly folded edges of the plates forming inwardly
extending flanges as shown. As clearly shown in Figs. 1, 2 and 10, the central
flanges or ribs D₁ D' fit into the slot as in the ends of the spokes and are secured
in place by rivets indicated at C. While I have shown my new cast metal hub.
and spokes it will be understood that I do not confine myself to this character
of wheel centre and spokes except where the same are expressely claimed, but may
use in connection with my rim sections any convenient hub and spoke construc-
tion which is adapted to be secured to a flange such as D' D¹.
The rim sections of my wheel are bent in the plane of the flange D¹ D¹ and to
the curvature of the desired wheel rim, the ends of the rim sections being abutted
together, and it is preferable that the abutted edges should be firmly locked in
place, as it will be understood that the pulley is more likely to become distorted
at the joint than at other points. In rigs. 3, 4, 5 and 6, I have illustrated a
convenient and satisfactory way of forming the joint at the abutted ends of the
rim sections, the ends of the rim being bent inward at a right angle to the face
of the rim, forming Hanges, as indicated at 1 D, which of course are practically
in planes radial to the centre of the pulley. To make this end flange it is of
course necessary that the central rim flange D' should be cut, preferably I cut it
away at an angle of 90° so that the bevel edges, as indicated at D³ and do will
abut together (see Fig. 6), the portion of the central web attached to the folds D* D*
being indicated at d. The ends of the rim sections being bent to the positions
shown in Fig. 6 are then firmly secured together by angle irons, as indicated
at E, E E, the portion E lying against the end folds D. The portions El lying
against the central flanges made up of the portions D¹ and d and the portions E
abutting against the edge folds D³. Rivets are conveniently employed to secure
the portions E1 and E2 of the angle iron to the flanges of the rim and bolts are
employed, as best shown in Fig. 3, to secure the plates E and flanges D4 together
and to secure the abutted flanges in position.
I have also braced the inwardly turned folds D in position by separating the
web portions d' from the web portions I by means of a straight cut as indicated
at and then lapping the portion d' on the portion D' as indicated in Fig. 7
employing rivets to secure the lapped portions together.
In Figs. 8 and 9 I have shown an abutted joint in which the rim sections are
not turned in at the ends but are abutted against each other and secured together
by angle irons E3 E the portions E+ of the irons being riveted to the rim and the
portions riveted or bolted together. The abutted joint between the rim por-
tions is indicated at 17 D7.
Where the pulley is a solid and not a split one the joint may be made as shown
in Fig. 10 in which I have partly broken away one of the lugs of the head A³
on one side of the groove a³ formed in it. In this construction the two rim
sections form an abutted joint as in Figs. 8 and 9, the joint being braced and
the parts aligned by bringing one of the spokes of the pulley into alignment with

page_text: it and riveting the ends of both sections of the rim to the same spoke of the
pulley.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is:
1. A wheel rim section consisting of a plate of sheet metal folded together at
a point intermediate of its edges to form an inwardly extending two ply flange
and folded outward from the top edges of the flange folds to form the face of
the wheel, said folded section being curved longitudinally in a plane parallel
to the flange.
2. A wheel rim section consisting of a plate of sheet metal folded together at
a point intermediate of its edges to form an inwardly extending two ply flange, said
plate being folded outward from the top edges of the flange folds to form the face
of the wheel and again folded inward at its edges to form strengthening ribs,
said folded section being curved longitudinally in a plane parallel to the flange.
3. A wheel rim formed of plates of sheet metal folded together intermediate
of their edges to form inwardly extending two ply flanges and folded outwardly
from the top edges of said flanges to form the face of the wheel, the ends of said
plates being bent in at right angles to form abutting faces and secured together
in forming the complete rim.
4. A wheel centre having radial spokes slotted at their ends in combination
with a rim of T shaped section having its web fitted into the slots of the spoke
ends and secured thereto.
5. A. wheel centre having radial spokes enlarged and slotted at their ends in
combination with a rim of T shaped section having its web fitted into the slots
of the spoke ends and secured thereto.
6. A wheel centre having radial spokes slotted at their ends in combination
with a rim of T shaped section formed by folding sheet metal together to form
a two ply web and outwardly from the top of the web flange to form the face of the
wheel, said rim section having its two ply web fitted into slots of the spoke ends
and secured thereto.
Dated this 10th day of December 1899.
FELL & JAMES,
Agents for the Applicant.