Year: 1898

page_text: Date of Application, 8th Feb., 1898-Accepted, 2nd Apr., 1898
ALBERT EDWARD LINE, 16, Shooters Hill, West Cowes, Isle of Wight, Blacksmith,
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 :-
My invention relates to shackles.
The main object of my said invention is to provide means for readily, simply
and securely fixing the pin of the shackle in the engaged position, and for the
equally ready disengagement of same at will.
In the accompanying drawings I have shewn what I consider to be the best
means of carrying out my invention, in which
Fig. 1 is a central sectional elevation of a shackle, made according to my
invention.
Fig. 2 an end view on the face A. of the shackle.
Fig. 3 an end view on the face B of the shackle.
Fig. 4 a sectional plan taken on the line a, a.
Like letters indicate corresponding parts throughout the drawings.
In making a shackle according to my invention I provide a recess C in one arm
of the shackle, and in the lower part of this recess fit a spiral spring D and on the
top of same in the recess I fit a bolt E arranged to project somewhat above the
lower side of the pinhole when in its normal position.
At the under side of the pin F, at the point of same, I provide à recess G of a
size and shape adapted to take the projecting top part of the bolt E.
When engaging the shackle the pin F is inserted in the eyes of same in the usual
manner, but meanwhile the bolt E and spring D are necessarily depressed, when
the end of pin F passes over the bolt, this being readily effected by reason of the
point of pin being somewhat rounded or curved upwards as shewn, but directly the
pin is pushed home the bolt E shoots into the recess G in pin, by reason of
the re-action of the spring D, and the bolt thereby locks the pin in the engaged
position in which remains until unlocked in manner hereinafter described.
In the face A of the shackle I provide a vertical slot H and pass through same
a pin J the point of which is screwed into the bolt E, the slot is of sufficient
length to allow of the necessary free up and down travel of the bolt E, for the
above specified purpose.
I further arrange that a recess K. shall be provided in the face A of shackle of
sufficient width and depth to take and house the head of the pin J, so that it is
flush with the outside of shackle, this recess extends above the top of the pin head
so as to admit of the insertion of a thumb or finger end, or the equivalent for same,
for the purpose of pressing the bolt down when it is desired to release the pin F
from the shackle.
I further provide on the head of the pin F a projection L, and a corresponding
recess in the shackle to take the projection, which when in engagement prevents
the pin from rotating in the shackle eyes, the object of this device is to take the strain
off the bolt E which would result if the pin F was free to rotate in the eyes of
shackle.

page_text: My improvements are applicable to most if not all fittings commonly known as
shackles, made of any known metals, or combinations of same.
I can if preferred plug the hole M after forming the recess C in shackle, such
hole being made during the operation of boring or otherwise forming the said
recess, and after this is done it will not be required.
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 is
1st. The improved shackle consisting of the parts all constructed and combined
substantially as described with reference to the accompanying drawings, and
arranged to operate as, and for the purpose as above specified.
2nd. The construction of a shackle with a spring locking bolt E for the
shackle pin F, and other devices, substantially as herein described for the purposes
specified.
3rd. The combination in a shackle of a spring locking bolt adapted to serve with
and lock the shackle pin in the engaged position.
4th. The herein described method of, and means for, locking and unlocking the
pin of a shackle substantially as herein described.
Dated this 15th day of March 1898.
ALBERT EDWARD LINE.
Herbert P. Blake,
70, High Street, Southampton, Agent for the Applicant.