An Improved Fastener, applicable for Studs, Links, Solitaires, and other purposes.
Year: 1893

page_text: Date of Application, 10th Aug., 1893
Complete Specification Left, 14th Dec., 1893-Accepted, 13th Jan., 1894.
PROVISIONAL SPECIFICATION.
An Improved Fastener, applicable for Studs, Links, Solitaires,
and other purposes.
I THOMAS JOHN HOSKIN, of 23 Savile Street Hull, in the County of York,
Jeweller, do hereby declare the nature of this invention, to be as follows:-
The object of my invention is to produce a safety fastener for studs, links,
solitaires and the like, at the same time, the top of the stud, link, solitaire or the
like is detachable, but it is impossible to detach the same by accident, it being
firmly locked when in position upon its shank.
The stud visibly consists of two parts, top and bottom, the top part having
preferably a round shank and flattened base with steps forming the key part.
The bottom part has a shauk with a slot or recess corresponding with the
shape of the key and shank of the top part, one sliding within the other.
Within the base is a thin spring disc, (preferably formed by having the disc cut
spirally to form the spring in the disc) the disc having a corresponding slot or
recess, but with a small projecting boss on the inside, with lugs to secure it in
position, and with an outer cover having a slot therein crosswise the slot in the
shank and spring disc; the slot through the boss of the spring disc is cut at an
angle, so being larger outside than inside.
In some cases the shanks may be made with the steps of the key on one side only
and a corresponding keyway, a half a turn is then required, also the spring instead
of being in the base may be in the head of the stud.
The action is as follows:- In putting on the head of the stud, insert its shank in
keyway of stud and give a quarter turn either way, the disc spring being lifted, as
soon as the key becomes opposite the slot in the cover, the disc spring returns and
locks the stud securely. In taking off the top is pulled upwards and turned either
way when key is liberated.
This method of securing studs, links, solitaires and the like is applicable to
bracelets, satchels and other suitable fastenings.
Deted this Ninth day of August 1893.
JOHN E. WALSH,
Savile Street, Hull, and Crossley Street, Halifax,
Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Fastener, applicable for Studs, Links, Solitaires,
and other purposes.
I, THOMAS JOHN HOSKIN of 23 Saville Street, Hull, in the County of York,
Jeweller, 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 :-
The object of my invention is to produce a safety fastener for stude, links,.
solitaires, and the like, at the same time the top of the stud, link, solitaire, or the
like is detachable, but it is almost impossible to detach the same by accident, it
being firmly locked when in position upon its shank.

page_text: invention.
Fig. 3. is a section of Fig. 2. without its cover and fittings.
Figs. 4 and 5 are plans of bottom and top of Fig. 3.
Fig. 6. is a section of bottom or lock plate.
Fig. 7. is a plan of Fig. 6.
Fig. 8. is a section of spring plate.
Fig. 9. is a plan of Fig. 8.
Fig. 10. is a section of outer cover of bottom part of stud.
Fig. 11. shows front elevation of Fig. 1.
Fig. 12. shows complete section of stud with top part and its shank inserted,
before it is turned and locked.
Fig. 13. is a section of stud with top part and its shank inserted, turned and
locked in position.
Fig. 14. shows top part of stud with single projections on shank.
Fig. 15. shows plan of bottom part of stud with corresponding hole for shank
with single projections.
Figs. 16. 17 and 18 show parts of stud with hollow shank, oval wings, steps,
projection on top of shank, corresponding hole and guide pin.
Fig. 19 shows solitaire or stud with hollow shank, corresponding guide pin of the
other part of stud, and having nechanism in the top.
Fig. 20 is a plan of stud with hollow shank.
Fig. 21. shows method of securing head to breast pin.
Fig. 22. shows my invention as applied to cuff links.
Figs. 23. 24 and 25 show its application to scarfring.
The stud visibly consists of two parts, top A, and bottom B, the top part A
having preferably a round shank C, and flattened base consisting of projections D,
with steps E, forming the key part.
The bottom part B has a wider shank F, with slot or recess G, corresponding
with the shape of the key or projections D and E, and shank C of the top part, one
sliding within the other, and openings J in outer rim, to receive lugs J and J* of
spring plate H, and lock plate K, to retain same securely in position.
Within the base is a thin spring disc or spring plate H, (preferably formed by
having the disc cut spirally in grooves H', to form the spring in the disc), the disc
having a corresponding or central slot or recess G', but with a small projecting
boss Jon the underside, with lugs J¹ to secure it in position, and with an outer
plate K, baving a slot G* therein, crosswise the slot G¹ in the spring disc; this outer
plate also having lugs J to secure it in position.
The slot through the boss of the spring disc is cut at an angle at L, so being
larger on the underside.
The projections or wings D. of the shank, are also bevelled or rounded at M, for
acting upon the inclined recess in the spring plate, and operating the spring; and
the steps E on the shank are for the purpose of preventing the shank being turned,
before the wings D enter the slot G' in the spring plate.
In some cases the shank may be made with the steps of the key on one side only,
see Figs. 14 and 15 and corresponding keyway, and slots in spring plate H, and
lock plate K, a half turn is then required to either lock or unlock it; also by
hollow shank with oval shaped steps and wings, sliding in corresponding keyway,
and like slots in spring plate H, and lock plate K, and working on guide pin fixed
in outer cover, as shown in Figs. 16, 17 and 18.
A projection D¹ (see Fig. 16), crosswise to wings D, may be employed at the top
of the shank C, in connection with any of the actions, and being of the same shape

page_text: as the slot in the shank with which it would be used, and it may be used either in
conjunction with or without lockplate K, thus forming a lock in top of shank F.
The action is as follows:-
In putting on the head of the stud, insert the shank in the keyway of the stud,.
see Fig. 12, then give a quarter turn either way, the disc spring being lifted or
pushed back by means of the inclines M, on the shank, and inclines L on the recess..
in the spring disc, as soon as the key becomes opposite the slot G in the outer or
lock plate K, the disc spring returns, and pushes the wings D into the said slot, and
locks the stud securely; N is the outer cover of the stud.
In disengaging, the top is pulled upwards to raise the spring plate, and is
then turned either way, until opposite the slot in the spring plate, when it
is liberated.
This method of securing, studs, links, solitaires and the like is applicable to
bracelets, purses, and other suitable fastenings, and almost prevents any possibility of"
them becoming accidentally disengaged and lost.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Locking, studs, links, solitaires, pins, brooches and the like, by means of shank C,
with steps E, wings D, bevelled at M, corresponding openings G in the body of the
stud, spring plate H, with inclined recess, and bottom or lock plate K with.
crosswise openings, substantially as shown and described.
Dated this Twelfth day of December 1893.
JOHN E. WALSH,
Saville Street, Hull, and Crossley Street, Halifax,
Patent Agent for the Applicant.