Improvements in Studs and Solitaires.
Year: 1898

page_text: Date of Application, 29th Apr., 1898-Accepted, 4th June, 1898
Improvements in Studs and Solitaires.
I, RALPH AINSLEY, of 4, Market Place, Acton, in the County of Middlesex,
Watchmaker and 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 :-
My invention consists of certain new and useful improvements in the design and
construction of studs solitaires and the like, and has for its object to provide an
improved form of stud, or solitaire or like fastening, which can be easily and rapidly
attached or detached as desired, and without injury to the material or objects it is
desired to connect or fasten. In order that I may effect the object of my invention
I construct the stud or solitaire in two portions, such portions being readily detached
the one from the other, and being provided with a locking device, hereinafter more
particularly described; the essential feature of which being that it is incapable of
accidentally coming undone, as is so frequently the case in studs or solitaires, that are
made in two portions, where the attachment is dependent upon pressure or friction.
In describing my improved stud or solitaire I may refer to the two portions as the
top and bottom parts, the top part being that portion of the stud or solitaire usually
exposed to view, and fitting into the lower part. The locking device is effected in the
lower portion of the bottom part, and which portion is preferably recessed as shewn
in the drawings, to avoid any projecting pieces. A small spiral or other spring,
whilst hidden by the upper part, produces the absolute locking of the two parts, by
may for
retaining the locking pin in position, as hereinafter described, or
convenience place the spring in the bottom part, its action to effect locking being the
same.
I now proceed to describe my said invention, reference being had to the
accompanying drawings, and to the letters & figures of reference marked thereon,
similar letters indicating like parts throughout.
Fig. 1 is an elevation of my improved stud or solitaire.
Fig. 2 is a sectional view of same.
Fig. 3 is a sectional view shewing alternative arrangement of spring.
Fig. 4 is a plan of Fig. 1 inverted.
Fig. 5 is a sectional plan on line A B of Fig. 2.
Fig. 6 is a section through the lower part.
Figs. 7 and 8 are two views of upper part and spring.
In Fig. 1a is the upper part, and b is the lower part; c is the spring and f the slot.
The upper part a is more clearly shewn in Figs. 7 and 8 and has attached at its lower
extremity a locking pin or projection d; c is a spiral or other spring which is used for
the purpose of keeping the part a in position when locked.
In Fig. 6 e is the recess into which fits the locking pin d when the upper portion is
in position. f is the slot down which the locking pin d is caused to pass; this is
When it is desired to use my
shewn in plan in Figs. 4 and 5, and also in Fig. 1.
improved stud or soltaire, the detached lower portion b is first passed through the
material to be connected; the upper portion a is then attached by passing its stem
down the centre hole of the lower portion, the locking pin d passing down the slot f.
It is so arranged that before the locking pin d can pass out at the bottom of the slot f,
the spring c will be slightly compressed; therefore, when the locking pin d, after

page_text: passing out of the slot f is revolved, on coming opposite the recess e, the action of the
spring at once draws it into the same, and in this manner the upper portion is
effectually locked. When the stud or solitaire required to be released, it is only
necessary to compress the spring c, when the pin d will be pushed out of its recess e,
and can then be revolved and drawn out through the slot f, which is a reverse process
to that above described.
In the alternative form shewn in Fig. 3 in which the lower part consists of a disc g
with a disc h superimposed thereon, the two discs being united at their peripheral
edges, the spring c (preferably of the form shewn) is contained within the space
between the two discs, & presses upwardly against the shank a, to keep the pin d
normally in the recess e.
It will be readily understood that I may employ more than one slot on the bottom
part, and more than one pin or projection on the upper part; and further, that I am
not confined to the design or shape of the lower or upper parts in so far as it does not
affect the essential improvements above described.
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 -
(1) A stud, solitaire or similar fastening, made in two portions, such portions being
capable of ready and secure attachment and incapable of becoming detached unless
desired, as described and illustrated in the accompanying specification and drawings.
(2) The combination of a bottom portion consisting of a grooved or recessed back-
plate with slotted tube; having one or more slots; with an upper portion, consisting
of a sliding stem, with projecting pin or pins, and spiral or other spring, as applied to
studs, solitaires and similar fastenings, substantially as described and illustrated
herein.
(3) The combination of a bottom portion consisting of a hollow backplate with
slotted tube, and spiral or other spring, with an upper portion, consisting of a sliding
stem with projecting pin or pins, as applied to studs, solitaires and similar fastenings,
substantially as described and illustrated herein.
This Thantu soventh day of Auril 1898