Improvements in Spring Hooks.
Year: 1897

page_text: Date of Application, 15th Mar., 1897-Accepted, 17th Apr., 1897
Improvements in Spring Hooks.
1, HENRY TURNER of 115 Hatherton Street, Walsall in the County of
Staffordshire, trading as H. Turner and Co., Manufacturers, 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 :--
This invention relates to certain improvements in the construction of spring
hooks for pole-chains, dog-chains and like purposes, and it consists firstly,-in
forming the pivoted piece or short-side hollow and concealing therein the spring
for closing the hook, by which arrangement the spring is protected from breakage
by contact with the chain or other external object, and a neater appearance and
finish are obtained; at the same time the use of a rivet passing through the
spring, which in ordinary constructions is a source of weakness, is superseded; and
secondly, in combining with a spring hook a spring eye so arranged that the
hook and the eye are simultaneously opened or closed by the movement of the
pivoted piece or short-side, as hereinafter described.
The improved spring hook is preferably formed in a continuous piece either
with a solid eye to receive the ring or chain, with an open eye for enabling the
chain to be readily attached and detached, or with an eye arranged to be opened
and closed by the act of opening and closing the hook itself. Or if desired a
swivel-eye may be attached to the narrow end of the-hook.
In carrying out my invention I construct the improved spring hook in any of
the forms shewn on the accompanying drawings, upon which-
Figure 1 is a side view partly in section of a spring hook of my construction in
its simpler form provided with a solid eye and shewn in the closed position;
Figure 2 being a front view of the same;
Figure 3 is a side view of a combined hook and eye shewn in the closed
position;
Figure 4 is a separate view of the spring;
Figure 5, a separate view of the short-side before being bent round, and
Figure 6 is a side view of the hook and eye shewn on Figure 3, with both parts
in the open position.
As will be seen from the drawings, I preferably make the spring hook A-
which may be of steel, brass or other suitable metal-of the usual approximately
elliptical form having an eye B on the narrower end formed in a piece with the
main part.
In the simpler form shewn on Figures 1 and 2 the short-side C is hinged on the
narrow part of the hook A by means of a pin D passing through the two parts,
and is made hollow for the purpose of encasing the spring E. I may make the
short-side either of cast or wrought metal, or of sheet metal stamped out and
afterwards bent round to the requisite shape to form a casing for the spring,
suitable ears F, (Fig. 5) being provided and pierced with holes in opposite
positions on the end of the blank or short-side where it is to be hinged to the
hook, for the purpose of admitting the hinge-pin D. Recesses corresponding
with the form of the ears F are provided to receive the same on either side of the
narrow end of the hook so as to form a flush surface at the joint. The other end
of the short-side C which closes against the hook may be made solid with a
i Price Add

page_text: suitably beveled edge cut in a U or V-shaped groove G to afford a secure bearing
against the end of the hook which is of corresponding section.
The spring E located within the hollow part of the short-side C is formed of a
strip of steel of the requisite strength bent to a suitable angle (see Fig. 4) and
arranged to bear at one extremity against the back of the short-side and at the
other against a shoulder or notch formed in or upon the part of the hook to which
the short-side is hinged, the arrangement being such that the pressure of the
spring tends to keep the hook normally closed.
In the combination spring book and eye, shewn on Figures 3 and 6, the
construction is similar to that above described, but in addition the short-side C is
extended beyond the pivot and bent or curved to form a hinged piece J for the
eye B. The hook and eye in this construction, as well as in that above described,
are preferably arranged in planes at right-angles one to the other, the short-
side C of the hook A opening inwardly, and the pivoted part J of the eye B
opening outwardly, as shewn on Fig. 6. If desired, however, the hook and eye
may be arranged in the same plane, in which case the bent or curved extension J
of the short-side would be slightly modified.
.
In any case the eye may be of round, oval or rectangular form and made in a
piece with the hook; or a swivel-eye may be arranged on the narrow end of the
spring hook first described.
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 :-
:-
1. In a spring hook for pole-chains, dog-chains and the like, a hollow short-side
or pivoted piece C enclosing the spring and hinged on the narrow end of the
hook A, provided or not with an open or solid eye formning a continuous piece
with the hook, as described with reference to Figures 1 and 2 of the accompanying
drawings.
2. The combination with a spring hook and eye formed in a continuous piece,
of a pivoted hollow short-side C enclosing the spring and having an extension J
constituting the closing portion of the eye so arranged that the hook and the eye
are opened and closed by one and the same movement, as described with reference
to Figures 3, 4, 5 and 6 of the accompanying drawings.
Dated this 15th day of March 1897.