PULLEY HEAD OR ATTACHMENT
Year: 1884

page_text: I JAMES WILLIAM PORRITT at the Office for Patents 323 High Holborn in the
County of Middlesex, Farmer, do hereby declare the nature of the said invention
for "PULLEY HEAD OR ATTACHMENT" to be as follows:-
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The object of this invention is to provide an adjustable pulley which will adapt
itself to the required direction or can be fixed in any particular one that may be
necessary.
I therefore adopt the well known ball and socket joint to this purpose, carrying
from the ball a stem in which I locate the pulley; the socket being arranged with
or in a projecting tail piece which can be inserted in a trunk or socket which may
be sunk in the ground.
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The rope or equivalent passes through the pulley which will readily adapt itself
to the direction required.
For fixing the ball and pulley head I may employ any suitable means such for
instance as a set screw in the side of the socket, or a divided socket which may be
tightened up by a screw or equivalent device.

page_text: COMPLETE SPECIFICATION.
I JAMES WILLIAM PORRITT at the Office for Patents 323 High Holborn in the
County of Middlesex, Farmer, do hereby declare the nature of this invention
for "PULLEY HEAD OR ATTACHMENT, 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 this invention is to provide an adjustable pulley which will adapt
itself to the required direction or can be fixed in any particular one that may be
necessary. It is an improvement upon that described in my previous Patent
No 9540 of 1884.
I therefore adapt the well known ball and socket joint to this purpose carrying
from the ball a stem in which I locate the pulley the socket being arranged with
or in a projecting tail piece which can be inserted in a trunk or socket which may
be sunk in the ground;
The rope or equivalent passes through the pulley which will readily adapt itself
. to the direction required.
For fixing the ball and pulley head I may employ any suitable means such for
instance as a set screw in the side of the socket, or a divided 'socket which may 'be
tightened up by a screw or equivalent device.
In the accompanying drawings Figure 1 is an elevation partly in section of this
device 'Figure 2 a view of the pulley and ball taken in a vertical plane at right.
angles to that of Figure 1.
A is the shell or jaw which carries the pulley B, the shell A being joined by a
short neck with the ball C. A suitable socket. D is provided and secured in any
suitable manner or position; in Figure 1 it is shown forming a head to the bar E
which fits into the trunk F where it may be secured by the set screw G.or in
other convenient manner.
The ball may be fixed in its socket by the screw H or an equivalent device.
Thus by combining with the pulley the well known ball and socket joint I am
able to produce a pulley which can turn in any requisite direction and will adapt
itself to the pull of the rope, but when desired it can be fixed by means of the
screw H.
The trunk F can be sunk in the ground..
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim in an apparatus such as described is
1. The combination with a pulley B of the ball and socket joint CD substantially
as and for the purpose specified.
2. The combination with the bar E of the ball and socket joint C D the
ball having attached to it the jaws which carry the pulley B substantially as
specified.
3. The combination with the ball and socket of the screw H for the purpose of
fixing the ball in its socket substantially as specified.
Dated this 15th day of April 1885.