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Патент USA US2107966

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Feb. s, 1938.
Filed July 28, 1937
J Tag? a 0/1 1'
BY .‘
Patented Feb. 8, 1938
Junzo Taguchi, Tokyo-shi, Japan
Application July 28, 1937, Serial No. 156,213
In Japan June 22, 1937
1 Claim.
This invention relates to attachments for arti
?cial teeth with a vulcanite-bed in a kind of bridge
work, and has for its object to provide means for
retaining the arti?cial teeth in position in the
U: mouth, simple in construction, low in cost, easy in
application without impeding regular arrange
ment of porcelain teeth, and reliable in function,
by which sound teeth used as piers need not be
arti?cially crowned and are not in?uenced by
10 chewing force of the arti?cial teeth.
In the accompanying drawing:
Fig. l is a perspective view of an attachment
according to the invention.
Fig. 2 is a plan View thereof.
Referring now to the drawing, I represents a
clasp adapted to be placed on the cheek side.
The clasp I has a limb 2, which is formed near
the clasp I with a lug 3 adapted to engage against
the undercut of the crown of a pier tooth to pre
vent the arti?cial tooth, or denture from verti
cally getting out of its position, and a locking hook
4 bent in a direction at an angle of about 90°
to that of the clasp I.
On the limb 2 between the
lug 3 and the locking hook 4 is mounted an
anchor piece 5, which is .adapted to be embedded
in one end of a vulcanite-bed of the arti?cial
teeth, or denture, as shown in dottedline at 6. The
limb 2 is arranged so as to make a su?icient move
ment to withdraw the lug 3 forwardly from the
undercut of the crown of pier tooth as shown in
dotted line at ‘I, and if necessary, the part of the
anchor piece 5 in engagement with the limb 2
may be recessed at its underside as indicated
at 8 to receive the hook 4 for permitting the said
movement of the limb 2.
It] represents a sliding locking bar mounted on
a holder 9 with toes I I, I I which are adapted to be
embedded in the vulcanite-bed 6 carrying arti?cial
teeth in such a position that the sliding locking
bar I 0 may be brought into engagement with the
(01. 32-5)
hook 4 on the limb 2 when the arti?cial teeth
are applied in position in the mouth. The slid
ing locking bar IIJ may be provided with a small
catch I2, which is adapted to have the tip of a
?nger or suitable tool placed against it on moving 5
the sliding locking bar III on the holder 9.
On applying the arti?cial teeth in position
in the mouth, the clasp I being held in a lateral
position relative to the pier tooth and in a posi
tion withdrawn forwardly so that the lug 3 may 10
be positioned in front of the undercut of the
crown of the pier tooth and opposite the same,
as shown in dotted line in Fig. 2, the arti?cial
teeth are put in position, and then the clasp is
pushed backward so as to force against the surface
of the pier tooth ‘I and at the same time to bring
the lug 3 in engagement with the undercut of
the crown of the pier tooth ‘I, and then is locked
in position by moving locking bar Ill to bring in
engagement with the hook 4 at the end of the
limb 2, as shown in Fig. 2, whereby the arti?cial
teeth are secured in position in the mouth.
I claim:
An attachment device for arti?cial teeth com— 25
prising an attaching member to be movably asso
ciated with the vulcanite-bed of the arti?cial
teeth, having a clasp adapted to engage a pier
tooth in the bridge work at the back side and a
limb provided with a lug adapted to engage with 30
the pier tooth at the undercut of its crown
and a locking hook and carrying an anchor piece
adapted to be embedded in one end of the vul
canite-bed, and a locking member having a
locking bar movable on a holder adapted to be 35
secured to the vulcanite-bed in such a position as
to permit the locking bar to co-act with the hook
to lock the clasp and hence the arti?cial teeth
in position.
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