Year: 1888

page_text: 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 provide pulleys and blocks so designed as to be durable, offer but
little resistance to the passage of the rope, or cord, and be readily and cheaply
manufactured.
My invention consists, First, in pressing from shoet iron or steel, discs, having such
form that when two are placed together back to back over a central sleeve there is
formed a pulley with a central aperture and a circumferential groove. The two discs
thus forming the pulley are held in position by rivets bolts and nuts or equivalent
devices.
Second. In constructing pulleys substantially as above set forth with a recess or
recesses to receive antifriction rollers or balls.
Third. In constructing pulleys under the second part with inward turned flanges
and antifriction rollers with axial projections to retain the said rollers in position.
Fourth. Constructing blocks for holding pulleys or sheaves under my invention out
of discs or oval shaped pieces of pressed metal, held together by set screws or
equivalent devices, and so shaped and disposed that the opening between the discs or
oval pieces through which the rope or cord passes is narrower than the space in which
the pulley works. Thus the opening serves as a guide for the rope and prevents the
sheaves and the block from being worn by friction contact.
J. T. KING,
Agent for the Applicant.

page_text: 1 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 the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
The object is to provide pulleys and blocks so designed as to be durable offer 5
but little resistance to the passage of the rope or cord and be readily and cheaply
manufactured.
My invention consists First. In pressing from sheet iron or steel discs having such
form that when the two are placed together back to back over a central sleeve there
is formed-a-pulley with a central aperture and a circumferential groove. The two discs 1
thus forming the pulley are held in position by rivets.bolts and nuts or equivalent
devices.
Second. In constructing pulleys substantially as above set forth with a recess or
recesses to receive antifriction rollers or balls.
Third. In constructing pulleys undor the second part with inward turned flanges 1
and antifriction rollers with axial projections-to-retain the said rollers in position.
Fourth. Constructing blocks for holding pulleys or sheaves under my invention-out--
of dises or oval shaped pieces of pressed metal held at the requisite distance apart by
set screws or equivalent devices and so fashioned and disposed that the opening
between the discs or oval pieces through which the rope or cord passes is narrower 2
than the space in which the pulley works. Thus the opening serves as a guide
for the rope and prevents the sheaves and the block from being worn by friction
contact.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a transverse section and fig. 2 an elevation of a pulley constructed in
accordance with the first part of my invention. a are sheet metal discs having each a
central aperture and being so shaped as to form two sides of a pulley. 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 and circumferential groove d. e rivets for
holding the discs together. When the pulley is galvanized after being formed the
rivets may be in some cases dispensed with.
Fig. 3 is a transverse section and fig. 4 an elevation of a pulley under the second
and third parts and a sheave under the fourth part of my invention.
Under the second part the discs & are shaped so that when they are pressed over
the sleeve a recess fis formed to contain antifriction rollers and under the third part
the said discs a have inwardly turned flanges g and the antifriction rollers have axial
projections j. The flanges and projections are so proportioned that the rollers are
prevented from falling out of the recess when the discs are in position, e bolts and

page_text: nuts for securing the discs together. Under the fourth part k are oval or like shaped
discs of metal held at the requisite distance apart by bolts and nuts and sleeves m so
as to form a block to contain pulleys or sheaves. The said discs are so fashioned and
disposed that the opening n between the discs through which the rope or cord passes
is less than the opening o which contains the pulley..
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 of metallic discs pressed together over a sleeve and held
in position substantially as set forth.
Second. Pulleys or sheaves constructed under the second part with recesses for the
purpose set forth.
Third. Pulleys or sheaves constructed under the third part with inwardly turned
flanges and antifriction rollers having axial projections for the purpose setforth.
Fourth. Blocks for pulleys or sheaves of metallic discs held in position and fashioned
and disposed substantially in the manner and for the purpose setforth.
Dated this 97th day of February 1880