Improvements in Clip Pullies and in Converting all Kinds of Pullies into Clip Pullies.
Year: 1887

page_text: Date of Application, 27th May, 1887
Complete Left, 27th Feb., 1888
Complete Accepted, 13th Apr., 1888
Improvements in Clip Pullies and in Converting all Kinds of
Pullies into Clip Pullies.
WO, JAMES BLACKBURN, of Allerton Main Colliery, Leeds, in the County of York,
Colliery Manager, and GEORGE JOHN LAMPEN, of Wakefield, in the same County,
Engineer, do hereby declare the nature of our said invention to be as follows:-
The object of our invention is to effect improvement in the construction of clip
pullies, and in the method of converting ordinary pullies into clip pullies.
In carrying out our invention we cut or form a narrow groove round the periphery
of the pulley, or utilize such groove, if already existing; and fit in such groove a
number of clips; the number depending upon the diameter of the wheel or pulley:
the power to be transmitted; the weight and diameter of the rope, and other
circumstances.
The clips are preferably formed of plates of iron cast steel or bent from any other
metal bent into the form of the letter Y, and having a rectangular piece cut out of tho
shank or centre.
Transverse holes or perforations are made in the pullies, in which bolts are fitted,
passing through the clips. The bolts have flat V heads which retain them in position,
the bolts passing through holes bored through the sole of the pulley.
Our invention is applicable to all kinds of pullies, whether formed of wood or metal,
and to hemp or wire ropes, the form of clip affording a firm hold and effectual
bite to the rope.

page_text: .
Improvements in Clip Pullies and in Converting all kinds of
Pullies into Olip Pullies.
We, JAMES BLACKBURN, of Allerton Main Colliery, Leeds, in the County of York,
Colliery Manager, and GEORGE JOHN LAMPEN, of Wakefield, in the same County,
Engineer, do hereby declare the nature of our said 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 of our invention is to effect improvements in the construction of clip
pullies, and in the method of converting ordinary pullies into clip pullies.
In carrying out our invention we cut or form a narrow groove round the periphery
of the pulley, or utilise such groove, if already existing; and fit in such groove a
number of clips; the number depending upon the diameter of the wheel or pulley:
the power to be transmitted: the weight and diameter of the rope, and other
circumstances.
The clips are preferably formed of plates of iron, cast steel, or any other suitable
metal, bent into the form of the letter Y, and having a rectangular piece cut out of
the centre of the shank.
Transverse holes or perforations are made in the pullies, in which bolts are fitted,
passing through the clips. The bolts have flat V heads which retain them in position,
the bolts passing through holes bored through the sole of the pulley.
Our invention is applicable to all kinds of pullies, whether formed of wood or
metal and to hemp or wire ropes, the V form of clip affording a firm hold and effectual
bite to the rope.
And in order that our said invention may be particularly described and ascertained,
reference is hereby made to the accompanying perspective elevation of our invention,
in which a a are the inclined sides of the clip, b is the shank, and c is the opening or
the passage of the bolt.
We find, in practice, that the number of clips to a pulley averages three clips to
every foot in diameter; thus a pulley of four feet diameter would require 12 clips:
a pulley of five feet diameter 15 clips; and so on for other diameters.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The manufacture and use of pullies fitted with clips of the form substantially
herein before described and shewn on the drawing.

page_text: 2. The application and, use of clips fitted to the peripheries of pullies, for the
purpose of converting the same into clip pullies, substantially as herein before
described.
3. The general construction, combination, and arrangement, together forming our
improvements in clip pullies, and in converting all kinds of pullies into clip pullies,
substantially as hereinbefore described.
HUGGINS & RUTLAND,
Agents for Applicants.