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Патент USA US3021707

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Feb. 20, 1962
G. M. COATES
3,021,697
CONTRACTIBLE RING HAVING A DETACHABLE SHANK
Filed Aug. 12, 1960
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United States Patent 0 ”
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3,@Z1,?97
Patented Feb. 20, 1962
2
which are formed in the opposite ends of a split shank
3,021,697
portion 18, which is adapted to extend around the ?nger.
The opposite ends 19 of the springs may be secured in
the bottoms of bore 17 and in any desired manner, as
CONTRACTIBLE RING HAVING A
DETACHABLE SHANK
Gordon M. Coates, 774 3rd Ave., Troy, N.Y.
Filed Aug. 12, 1960, S81‘. No. 49,324
2 Claims. (Cl. 63-—15.45)
by means of jeweler’s screws 20 or the like.
Each end of shank 18 is provided with a lug or boss
21, the purpose of which will be more fully described
hereinafter.
particularly to a ?nger ring of this character.
In order to render the ring more symmetrical in ap
A primary object of this invention is the provision of 1O pearance the ends of the shanks are adapted to be covered.
an expansible ring which will ?t on the ?nger by expand
The covering means take the form of lower sleeve por
ing to ?t over the knuckle or largest part of the ?nger,
tions 21, each of which is provided with upwardly ex
and then contracting to ?t properly and comfortably on
tending side ?anges 22, in which are positioned detent
that portion of the ?nger where a ring is commonly worn.
members 23. A pair of prongs 24 extend from the ends
An additional object of the invention is the provision 15 of each member 21, and are adapted to be inserted
of such a ring which, after contraction will ?t snugly on
through slots 25 suitably aligned on opposite sides of the
the ?nger, and will not swing or rotate to allow the stone
head 11, the ends of the prongs 24 being suitably bent
or other ornamentation to revert to the palm-side of the
over as indicated at 2-6 to retain the lower sleeve mem
hand, as loose ?tting rings are apt to do, with a resultant
bers 21 in related assembly with the undersides of the
possibility of damage to the stones or decorations.
ends of shank 18.
This invention relates to an expansible ring, and more
An additional object of the invention is the provision
of such an expansible ring, which, by virtue of its expan
sibility will minimize the present conventional practice of
Oppositely disposed complementary upper sleeve por
tions 28 are provided, each of which has a depending
side ?ange 29 on either side thereof provided with an
sizing rings, since a single ring will be readily adaptable
to a variety of ?nger sizes, and which will also substan
interiorly positioned raised boss 30, the arrangement being
25 such that when the upper sleeve half portions are posi
tially eliminate the necessity for ring guards which have
tion over the ?anges of the complementary lower sleeves,
the bosses 30 will engage in the detents 23 to hold the
Still another object of the invention is the provision
parts against disassembly. The inner end 31 of each upper
of ‘a ring of this character wherein the head or setting of
sleeve portion 28 is adapted to seat snugly against the ad-l
the ring may be of any desired size of design to accom 30 jacent side of the head 11, as best shown in FIGS. 1 and
a tendency to wear grooves in a ring.
modate any desired stone or other decoration.
2.
The outer end of each member 28 includes a de
A still further object of the invention is the provision
pending ?ange portion 32, the arrangement being such
of an expansible ring which will be sturdy and durable
that in the event a spring 16 should break, or become
in construction, reliable and el?cient in operation, and
otherwise disengaged from its retaining means, the lug 21’
35 will engage the ?ange 32 to prevent disengagement of
relatively simply and inexpensive to manufacture.
Other objects will in part be obvious and in part be
the shank, and consequent possible loss of the ring.
pointed out as the description of the invention proceeds
If desired, the lugs 13 and their associated openings
and shown in the accompanying drawing wherein:
14 may be supplanted by suitable small hooks soldered
FIGURE 1 is a perspective view of one form of ex—
or otherwise suitably secured to the exterior of the head
pansible ring constructed in accordance with the instant
11 for engaging the ends 15 of spring 16. Similarly,
invention;
other securing means than the ieweler’s screw 20 may be
FlGURE 2 is an enlarged vertical sectional view taken
employed for holding the opposite ends of springs 16 in
substantially through the center line of the head of the
ring showing its expansion connection with the shank;
FIGURE 3 is a fragmentary sectional view taken sub
stantially along the line 3-3 of FIGURE 2 as viewed in a
the bores 17.
From the foregoing it will now be seen that there is
45
herein provided an improved expansible ring construction
which accomplishes all of the objects of this invention,
and others, including many advantages of great practical
utility and commercial importance.
the direction indicated by the arrows; and
FIGURE 4 is an exploded end elevational view of the
shank and certain elements adapted to connect the shank
As many embodiments may be made of this inventive
to the head of the ring.
50 concept, and as many modi?cations may be made in the
Similar reference characters refer to similar parts
embodiment hereinbefore shown and described, it is to
throughout the several views of the drawing.
be understood that all matter herein is to be interpreted
Having reference now to the drawings, more partic
merely as illustrative, and not in a limiting sense.
ularly to FIGURE 1, an expansible ring constructed in
I claim:
'
accordance with the instant invention is generally in 55
1. An expansible ring comprising a head, apertured
dicated at 10 and includes a head or mounting socket 11.
lugs on opposed sidewalls thereof and a pair of openings
The head may be of any desired size, and any desired
on each of said walls adjacent the bottom thereof, a
conventional con?guration and is adapted for the recep
split shank curved from end to end having a substantially
tion of a diamond 12 or other suitable stone or decora
straight
bore opening from an end face at each end, a
tive material. Obviously, if desired, the head may be 60
coil spring in each bore, a jeweler’s screw securing one
made of solid and of precious or semi-precious metal, or
end of each spring in its associated bore, a hook formed
in any other con?guration normally employed in the
on the other end of each spring and engaging in the aper
making of an ornamental ?nger ring. The opposite sides
ture in a respective one of said lugs, a sleeve surrounding
of the socket are provided with laterally extending bosses
or lugs 13, which are provided with apertures 14, which 65 each end of said shank, each sleeve having an inner end
abutting one of said walls, and hooked ?ngers on said
are adapted to engage the ends 15 of oppositely disposed
inner end secured in a respective pair of said openings.
coil springs 16. Springs 16 are seated in the sockets 17,
3,021,697
4
2. An expansible ring comprising a head, apertured
lugs on opposed sidewalls thereof and a pair of openings
on each of said walls adjacent the bottom thereof, a split
shank curved from end to end having a substantially
straight bore opening from an end face at each end, ‘a
coil spring in each bore, a jeweler’s screw securing one
end of each spring in its associated bore, a hook formed
on the other end of each spring and engaging in the
aperture in a respective one of said lugs, a sleeve sur
on the outer end thereof engageable with its associated
boss in the event of breakage of the adjacent spring.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,541,764
1,641,575
2,457,275
2,517,011
rounding each end 05 said shank, each sleeve having an 1O
inner end abutting one of said Walls, and hooked ?ngers
Harrison _____________ __ June 9, 1925
Cibor ________________ __ Sept. 6, 1927
Ritter _______________ __ Dec. 28, 1948
Meyers ______________ _._ Aug. 1, 1950
FOREIGN PATENTS
on said inner end secured in a respective pair of said
208,611
Germany ____________ “June 13, 1908
openings, each end of said shank having an upstanding
boss thereon and each sleeve having a depending ?ange
361,985
279,516
Germany ____________ _._ Oct. 20, 1922
Italy _______________ __ Nov. 14, 1930
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