Improvements in Gins or Pulley Blocks.
Year: 1893

page_text: Date of Application, 12th Jan., 1893
Complete Specification Left, 13th Nov., 1893-Accepted, 12th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Gins or Pulley Blocks.
We DAVID JOHN MORGAN of Walmer House Romilly Road Canton Cardiff in
the County of Glamorgan Engineer and WILLIAM GUY NIXON of 33 Hughendon
Terrace Leyton Road Stratford in the County of Essex Engineer do hereby
declare the nature of our invention to be as follows:-
Our present invention relates to certain improvements in the construction and
arrangement of gins or pulley blocks the object being to improve the means of
lubricating the same and to introduce parts which tend to its durability to attain
which we arrange two suitable frames which are secured together at the top by
means of a cross lug with rivets or bolts and the said lug has the swivel or hook
fitted to it in the usual way. The lower part of the frames aforesaid are secured
together by means of an improved pin or through bolt, which has a hexagon or other
sided head at one end and screws into the opposite frame at the other a suitable
lock plate or cover resting over the head to prevent the pin moving round. The
said improved pin has a hollow portion in the centre extending from the screw end
to near the head and it has fitted loosely upon it between the frames a steel or
other metal bush having at one end serrations teeth or projections which fit into
corresponding serrations or projections formed on the inner circle of a vertical
washer by this means the bush becomes locked in position and should it wear at one
place more than another the washer may be removed and the bush turned round
and again locked in position. The usual sheave for chain wire or other rope is
arranged fitted upon the steel or other metal bush aforesaid and has a suitable
annular recess at each side thereof for receiving packing, which is held therein by
washers screwed or otherwise fastened to the side of the sheave. The vertical
space extending from below the hollow of pin to the top of black on one side frame
is covered up with a plate in such a manner as to form an oil cup for containing the
lubricant for the pin which is filled therein through an opening at the upper end
which may have a metal cap or cover. A suitable hole is formed through the
hollow pin to permit of the oil getting to the outer circumference of the pin and
lubricating the steel bush. We prefer to have fitted on our improved gin or pulley
block and upon inside edge of frame a thin steel plate a little larger in diameter
than the sheave so as to act as a guide for the wire chain or rope and also for a
protection for the sheave.. A bush fitted in the sheave with recesses for packing,
also plates fitted to keep packing in position when required.
Dated this 7th day of January 1893.
H. F. BOUGHTON, M.I. Mech. E.,
Commercial Street, Sheffield, Agent.
COMPLETE SPECIFICATION.
Improvements in Gins or Pulley Blocks.
We DAVID JOHN MORGAN of Walmer House Romilly Road Canton Cardiff in
the County of Glamorgan Engineer, and WILLIAM GUY NIXON of 33 Hughendon
Terrace Leyton Road Stratford in the County of Essex Eugineer 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 present invention relates to certain improvements in the construction and

page_text: arrangement of gins or pulley blocks the object being to improve the means of
lubricating the same and to introduce parts which tend to durability, to attain which
we construct and arrange our improved gins or pulley blocks substantially as
described with reference to the accompanying sheet of drawings in which
Fig. 1 is a cross sectional elevation of our improved gin or pulley block and
Fig. 2 a front elevation of same with parts of the hook and sheave broken away for
space.
Fig. 3 is a cross sectional elevation of the centre part of a modified form of our
improved form of our improved block and Fig. 4 is a front elevation of a detail of
said modified part.
Similar letters of reference denote corresponding parts in each view.
Referring to Figs. 1 and 2 we arrange two suitable frames A secured together at
the top by means of a cross lug a' with rivets or bolts a' and the said lug a has the
swivel or hook B fitted to it in the usual way. The lower part of the frames A are
secured together by means of an improved pin, axle or through bolt C which has a
hexagon or other sided head e' at one end and screws into the opposite frame A
at c² and a suitable lock plate or cover D rests over the head c³ to prevent the pin C
moving round. The said pin C has a hollow portion in the centre extending from
the screw end to near the head c¹. The usual sheave E for chain or wire or other
rope is arranged, and fitted upon the improved pin C, and has a suitable annular recess
each side thereof for receiving packing f which is held therein by washers H
suitably fastened to the sides of sheave E as shown. A vertical space j' extending
from below the hollow of pin C to top of block on one side frame A is covered up
with a plate J in such a manner as to form an oil cup for containing the lubricant
for the pin C, and the said lubricant is charged through the opening which has a
removable cap or cover. A suitable hole is formed through the hollow pin C to
permit of the oil getting to the outer circumference of said pin C and so lubricating
the bearing of the sheave E. Where preferred, a thin steel plate K little larger
in diameter than the sheave E may be fitted to our improved gin or pulley block so
as to act as a guide for the wire chain or rope.
Referring to the modification illustrated at Figs. 3 and 4 of the accompanying
drawings we fit loosely upon the pin C a steel or other metal bush L having at
either one or both ends thereof serrations teeth or projections e¹-see Fig. 4-which
fit into corresponding serrations or projections ' formed on the inner circle of the
washer H. The head c¹ of pin C may have a projection which may be fastened to
a frame A to prevent the pin C moving round. By means of our invention as
described it will be obvious that a convenient means of lubricating the gin is
obtained and the introduction of the parts add considerably to its durability.
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. In a gin or pulley block the combination of a hollow pin C having one or more
holes with an oil space j' substantially as described.
2. In a gin or pulley block the combination of a hollow pin C having one or more
holes with packings f, and washers D substantially as described.
•
3. In a gin or pulley block the combination of a hollow pin C having one or more
perforations with a perforated or solid metal bush L packings washers D and a
plate J forming an oil cup substantially as described.
.4. In a gin or pulley block such as described the use of a plate K substantially
as described.
Deted this Oth dif N
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