Improvements in the Means of Securing Facings or Tyres on Belt Pulleys and other Wheels.
Year: 1889

page_text: Date of Application, 16th Feb., 1889-Accepted, 22nd June 1889
COMPLETE SPECIFICATION.
Improvements in the Means of Securing Facings or Tyres on Belt
Pulleys and other Wheels.
We, JOHN ANDREW JACKSON SHULTZ and BRUCE CLARKE ALVORD, both of Saint
Louis, Missouri, United States of America, Manufacturers do hereby declare tho
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:—
Our invention relates to that class of belt-pulleys and wheels which are faced with
leather or other suitable material. The practice, hitherto, has mainly been to apply
the facing to the rim by cementing or otherwise securing, the facing directly to the
face of the pulley-rim. The present improvement consists in applying the facing by
attaching it to the sides of the pulleys or wheels, to which end the facing, in the place
of being as wide as the pulley rim, is made considerably wider, so that when applied
it extends laterally beyond each edge of the rim, and that portion is turned tightly
over the outer corner of the edges of the rim and securely fastened in continuous
grooves provided to receive it in the edges of the rim of the pulley, whereby the
facing is securely fastened to the face of the rim, substantially as herein described.
In the accompanying drawings
Figure 1 is a side elevation of a pulley embodying this invention.
Figure 2 is a cross-section of the rim of the pulley on the line 2. 2 of Figure 1.
Figure 3 is a cross-section of the same on the line 3. 3 of Figure 1.
Figure 4 is a plan of the facing and
Figure 5 a section on the line 5. 5 of Figure 4 illustrating the method of uniting
the ends of the facing.
The same letters of reference denote the same parts.
A represents a pulley in which the present improvement is embodied. The pulley
has the customary hub a spokes a', and rim a², and it is of the usual form saving as it
is modified or supplemented by the present improvement. In each side or edge of the
rim of the pulley, and extending continuously around the said rim, is a groove B.
The edges of the facing C are respectively secured in these grooves and the facing
thereby held in place. The method of securing the edges in the grooves is pre-
ferably to fold the edge as shown at c, and to force it into the groove so that it
becomes tightly packed therein, and to better confine the folded edge, the groove may
be made wider at its bottom than at its top, and, to still better fasten the facing,
wedges, such, for instance, as shown at D D, may be inserted between the folds of the
edge. By this means the facing is tightly and securely strained upon the face and
around the corners of the pulloy, and is held from slipping upon the rim, and the
sides of the pulley are free from projections or any roughnesses calculated to interfere
with the use of the pulley. At the same time the facing can, by withdrawing its
edges from the pulley-grooves, be detached from the pulley. The abutting ends of the
facing may be united or secured evenly in opposition to each other in various ways.
One method is indicated in the drawing. EE represent U-shaped fastenings passed
from the inner side of the facing outward through its ends c', c, and having a plate
e applied, and the points e², e², of the fastenings clinched upon the plate, substantially
as shown. That is, one point of the fastening passes through one of the facing-ends,
and the other point of the fastening through the other facing-end. The facing-ends
are drawn snugly together, and the fastening-points and plate, when in place, do not
substantially project above the general surface of the facing. The cross-section of the
grooves B is preferably that of a dove-tail form, as shown, but other suitable forms
may be employed.
The improvement may be applied to an ordinary pulley by the attachment thereto
of a circular part, or a circular series of segmental parts, whose outer surface, in

page_text: conjunction with the pulley-rim, shall form a groove which is the equivalent of that
shown. The improvement is not limited to pulleys, but can be applied to other wheels
of various kinds, as velocipede wheels for instance. Other means than the grooves B
can be used to secure the facing edges.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
First. A pulley provided with a facing, the said facing being wider than the
pulley-rim and having its side-edges confined in the sides respectively of the
pulley-rim, substantially as described.
Second. A pulley provided with a facing, the said facing being wider than the
pulley-rim and having its side-edges confined in grooves respectively in the sides of
the pulley-rim, substantially as described.
Third. A pulley provided with a facing, the said facing being wider than the
pulley-rim and having its side edges folded and confined in grooves in the sides
respectively of the sides of the pulley-rim, substantially as described.
Fourth. A pulley provided with a facing the said facing being wider than the
pulley-rim, and having its side-edges folded and wedged in grooves in the sides
respectively of the pulley-rim, substantially as described.
Fifth. A pulley provided with a facing the said facing being wider than the pulley-
rim and having its side-edges confined in the sides respectively of the rim, and its ends
united by means of the fastenings and plates, substantially as described.
Sixth. A pulley or wheel provided with a facing the said facing being wider than
the face of the pulley or wheel and having its side edges secured to the sides
respectively of said face substantially as described.
Dated this 16th day of February 1889.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicants.