Improvements in Pulleys or Sheaves.
Year: 1888

page_text: Date of Application, 11th Oct., 1888
Complete Specification Left, 11th July, 1389-Accepted, 24th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Pulleys or Sheaves.
I ANDREW HIGGINSON of 7 Hurst Street Liverpool in the county of Lancaster
Engineer, do hereby declare the nature of this invention to be as follows:-
The object is to strengthen and improve rope pulleys or sheaves constructed by
placing back to back two pressed discs of sheet metal.
The first part of my invention consists in pressing the discs into a die so shaped
that when two discs are placed together over a central brush or sleeve the pulley or
sheave is formed with radial or other corrugations which as aforesaid strengthen and
stiffen the article produced.
Second. In constructing pulleys or sheaves of sheet metal discs secured together
over a sleeve so as to form a central chamber to contain antifriction rollers with
axial projections, the said chamber being shaped so that rollers cannot fall out when
the sheave pin is withdrawn.
Third. In constructing pulleys under the first part of my invention with a space
between the discs to contain oil and with a needle or lubricating device.
Dated this Tenth day of October 1888.
J. T. KING,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Pulleys or Sheaves.
L, ANDREW HIGGINSON, of 7 Hurst Street, Liverpool, in the County of Lancaster,
Engineer, do hereby declare the nature of this invention and in what manner tho
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
The object is to strengthen and improve rope pulleys or sheaves constructed by
placing back to back two pressed discs of sheet metal.
The first part of my invention consists in pressing the discs into a die so shaped
that when two discs are placed together over a central bush or sleeve the pulley or
sheave is formed with radial or other corrugations which as aforesaid strengthen and
stiffen the article produced.
Second. In constructing pulleys or sheaves of sheet metal discs secured together
over a sleeve so as to form a central chamber to contain antifriction rollers with
axial projections the said chamber being shaped so that the rollers cannot fall out
when the sheave pin is withdrawn.
Third. In constructing pulleys under the first part of my invention with a space
between the discs to contain oil and with a needle or lubricating device.
Fig. 1 is an elevation and Fig. 2 a transverse section of a pulley or sheave under
the first and third parts of my invention. à are sheet metal discs, having each
a central aperture, and being so shaped as to form two sides of a pulley. bare radial
corrugations for the purpose of rendering the discs rigid. c is a sleeve over which
the discs a are pressed back to back preferably by hydraulic power so as to form a
pulley having a central aperture d and circumferential groove e.
The pulley may be
then dipped into a galvanizing tank so that the parts become firmly united, or if
desired rivets may be used to secure the discs in position or a bar may be formed on
the sleeve in front of the discs for that purpose. is a groove in the sleeve c and g
is an orifice leading from the groove into the space between the discs a. The
space h is filled with oil through an orifice i.

page_text: Fig. 3 is a view part in elevation and part in section and Fig. 4 a transverse section
of a pulley or sheave under the second and third parts of my invention. The discs a
are made in the same manner as in Figs. 1 and 2 and are passed over and secured to
a sleeve c in similar manner. The sleeve c is made with flanges hand has fitting
over one end of it and secured to the discs a by set bolts or otherwise a flanged
ring so that a chamber is formed to contain antifriction rollers l.
m are pro-
jections on the ends of the antifriction rollers which rest on the flanges and so
prevent the said rollers from falling out of the chambers when the central pin is
withdrawn.
The flanges h h¹j j¹ may be formed on the discs a in which case a plain sleeve
would be used and the discs would be held together by set screws or equivalent
devices.
In all the views the same letters denote like parts.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is.
First. Pulleys or sheaves constructed of corrugated dises pressed over a sleeve.
Second. Pulleys constructed of discs pressed over a sleeve and having a chamber
and flanges to contain antifriction rollers.
Third. Pulleys or sheaves constructed of discs pressed over a sleeve and having
means for oiling substantially as set forth.
Dated this 10th day of July 1889.
Per pro J. T. KING,
J. Johnson, Agent.