IMPROVEMENTS IN. BELT PULLEYS
Year: 1887

page_text: Date of Application, 18th June, 1887
Complete Left, 16th Mar., 1888
Complete Accepted, 20th Apr., 1888
We, GEORGE RICHARDS, of Atlantic Works, Broadheath Cheshire, Engineer, and
GEORGE NAPIER of Broadheath, Cheshire, Engineer, do hereby declare the nature of
our invention for IMPROVEMENTS IN. BELT PULLEYS to be as follows: —
Our invention relates to belt pulleys which have wrought metal rims made so as to
have two or more distinct convexities, side by side, so that two or more belts can run
on the same pulley and each belt shall run on a convex face. Heretofore this result
has been obtained by rolling the sheet of metal which is to form the rim into two
convex surfaces.
Our invention consists in fastening two or more separate wrought metal rims, each
made properly convex, side by side, on the ends of the arms of the pulley which
extend across the rims, and which are also made convex. In order to prevent the
belts from interfering with each other, the rims can be made wider than usual, or they
may be placed a little distance apart leaving a gap between them, or a narrow separate
rim can be placed between the convex rims, and if desired this separate rim can be
made to project enough to form a flange between the belts.
11
1711
JL 1997

page_text: We, GEORGE RICHARDS of Atlantic Works, Broadheath, Cheshire, Engineer, and
GEORGE NAPIER of Broadheath, Cheshire, Engineer 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 :-.
Our invention relates to belt pulleys which have wrought metal rims made so as to
have two or more distinct convexities, side by side, so that two or more belts can be
run on the same pulley and each belt shall run on a convex face. Heretofore this
result has been obtained by rolling the sheet of metal which forms the rim into two
convex surfaces.
Our invention consists in fastening two or more separate wrought metal rims, each
made properly convex, side by side, on the ends of the arms of the pulley which
extend across the rims, and which are also made convex. In order to prevent the
belts from interfering with each other the rims can be made wider than usual, or they
may be placed a little distance apart, leaving a gap between them, or a narrow separate
rim can be placed between the convex rims, and if desired this separate rim can be
made to project enough to form a flange between the belts. The drawing shows a
cross section of a pulley made according to our invention; a, and b, Fig. 1, are two
separate wrought metal rims made properly convex and rivetted to the ends of the
arms c, c, which are also made of the proper convexity. The separate rims can either
be made to lie close together in which case they should be considerably wider than the
belts so as to avoid interference; or, a gap may be left between the separate rims; or,
this gap may be filled with a separate rim which may either be flat as shown in Fig. 2,
or it may have a projecting flange as in Fig. 3.
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.
In a belt pulley which has a wrought metal rim made so as to have two or more
distinct convexities side by side,
1. Constructing the rim of separate pieces, each piece being curved to the proper
convexity, substantially as described.
2. Curving to two or more distinct convexities the ends of the pulley arms which
go across the rim and support and fasten it.
3. Leaving a gap between the separate convex rims.
4. Placing a separate narrow rim between the convex rims.
5. Placing a rim with a projecting flange between the convex rims.
Dated this 15th day of March 1888