Improvements in and connected with Screw-eyes and Hooks.
Year: 1890

page_text: Date of Application, 2nd May, 1890
Complete Specification Left. 26th Feb., 1891-Accepted, 28th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in and connected with Screw-eyes and Hooks.
GAETAN HÉMART, 106, Great Titchfield Street, Portland Place, Artistic
Wrought Iron Worker, do hereby declare the nature of this invention to be as
follows:-
This switch or hook can be made in every size, its purpose is to hang up any
materials such as suspension lamps chandelliers any kind of work on ceiling, it is
useful to fix cranes to lift up goods, the heavier the weight is the more it holds, it
is fixed by hand in a hole the dimension of the piece A, in screwing the switch or
hook B, screw C, in the corner D up and fix fast in the hole to the points E and
the figure F prevents from unscrewing the switch or hook B by the pressing of
the screw G.
COMPLETE SPECIFICATION.
Improvements in and connected with Screw-eyes and Hooks.
I, GAETAN HÉMART, of 35, Goodge Street, Tottenham Court Road, in the
County of Middlesex, Artistic Wrought Iron Worker, 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 improvements in and connected with screw-cyes and hooks
which improvements are designed to increase the security of such hooks by pro-
viding for increasing the grip in proportion to the pull or load thereon.
My said improved device comprises an eye piece or hook having a screw-threaded
stem which is constructed to screw into a long nut, which nut is provided with welge
shaped cars or wings adapted to fit and slide between the edges or faces of the two
halves of a split bush.
The arrangement is such that when a load is suspended from the eye-piece or
hook the tendency is to withdraw the nut, and the ears of the said nut are thus
caused to press the two halves of the split bush outwards against the sides of the
hole in which the same are placed thereby increasing the hold thereof. To
prevent slipping I prefer to form around the split bush a number of grooves or
corrugations.
In the accompanying drawings
Figure 1 is a side view of a screw-eye constructed according to my invention.
Figure 2 is a longitudinal central section of the same, the screw being shown
advanced further into its nut, and
Figures 3 to 6 are views of the several parts of the screw-eye shown
separately.
Like letters of reference indicate corresponding parts throughout the drawings.
A is the screw-eye proper comprising an ordinary eye-piece a and screw threaded
stem b. B is a long cylindrical nut constructed to fit the screw-portion or stem b.
The said nut is formed with two external longitudinal wedge-shaped ears or wings B¹
one on each side thereof.
C is a bush surrounding the nut. The said bush is split longitudinally from end
to end through opposite sides and the two halves are secured at their inner or lower
ends to a thin spring plate C' which serves to allow of the two halves being drawn
aside or opened at their upper or outer ends while acting to close the same when the
force tending to open the bush is removed. I prefer to form a number of circular

page_text: grooves or corrugations (" on the outer circumference of the bush (' to increase the
hold of the same as hereafter describeal. The wings B of the nut 13 enter the
splits or openings in the split bush, and the said openings are preferably inade
V-shaped to fit the said wings. D is an ordinary figure plate loosely mounted on
the collar of the screw-eye A and having two or more points D' projecting from its
inner face. These points are intended to be forced into the material in which the
screw-eye is fixed to prevent the rotation of the figure plate. E is a clamping
screw in the neck of the figure plate for the purpose of nipping the stem. The
mode of fixing my improved screw-eye or hook is as follows. A hole is first made
in the ceiling, or other place where the said devices is to be fixed, of a diameter
sufficient to receive the split bush C, and the device is then inserted therein, the
screw stem having being previously so far unscrewed as to permit of the mut B
heing raised as shown in Figure 1, to allow of the split bush being closed sufficiently
to permit the insertion. When the device is properly inserted, the eye piece a is
turned to screw the stem & into the mit 13 and draw the said nut downwards or
outwards. This movement causes the wedge-shaped wings B' to advance between
the faces of the split bush and forces the said bushi to expand and press against the
sides of the hole thereby obtaining a secure hold which is increased by reason of
the grooves or corrugations ( It is obvious moreover that any pull or load on the
screw-eye tending to withdraw the same will press all the more tightly the halves of
the split bush against the sides of the hole and increase the grip.
יכ
The points
prevent the rotation of the figure plate and the screw E serves to
elamp the screw-eye and prevent accidental unscrewing thereof.
It is obvious that my improved device may have a look instead of the eye
piece a.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
First. A screw-eye or hook comprising a screw-stem, a nut provided with side
wings, in which nut the screw stem works, and a split bush engaging with the wings
of the said nut as, and for the purpose, specified.
Second. In connection with a screw-eye or hook the employment of a split bush
and a winged nut, as, and for the purpose, specified.
Thind. The screw-eye or hook constructed substantially as described and shown
in the drawings and operating as, and for the purpose, specified.
Datal this 2nd day of February 1891.
HASELTINE, LAKE & Co..
45, Southampton Buildings, London, W.C., Agents for the Applicant.