Download _-No.170,17`8.

L. F. Loon.
DENTAL POLISHING-TOOL.
_-No.170,17’8.
Patented Nov. 23,1875.
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N,PETERS, PNOTO<LITHOGRAPNEE WASMINGTQN. U. C,’
UNITED“ STATES PATENT OFFICE.
LUTHER F. LOOKE, OF NAISHUA, NEW HAMPSHIRE.
IMPROVEMENT IN DENTAL POLISHING-TOOLS.
Speci?cation forming part of Letters Patent N0.“l‘70,‘l78‘, dated November 23, 1875; application ?led
'
June 22, 1875.
each requiring to be shaped and polished, ren
Be it known that I, L. F. LooKE, of Nashua, ders the task one of great labor, and requir
To all whom it may concern:
New Hampshire, have invented certain new ing long practice and patience.
The object of my invention is to provide a
and useful improvements in ,implements for
cutting, trimming, shaping, and polishing tool which will shape and polish every part
plates for arti?cial teeth, of which the follow of the plate, and thus avoid the dif?culties
'
ing is a full, clear, and exact description, ref‘ named.
To this endI allow the elastic cushion to .'
erence being had to the drawing making part
of this application.
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project slightly beyond the end of the spindle
head, as shown in Fig. 6. Now, if the sand
tool which may be mounted in the dental paper collar terminates exactly at the ex
lathe. It is composed of several parts, viz: tremity of the cushion it will be seen that an
a spindle to ?t the ‘lathe-head, an elastic cont» “extremely sharp and delicate cuttingedge is
cal cushion, and a collar ?tting tightly/over obtained, which will readily enter the sinus
the latter, and projecting somewhat beyond between two of the. teeth upon the plate.
the end of the supporting-cushion, said collar Nor is this all; for‘, by pressing the plate
» being composed of sand-paper, emery, or other against the end of the cone, at an angle to
similar substance. The construction of these the axis of the spindle, the unsupported end
parts and their relation to each other are of the cushion will bend in against the end of
novel and peculiar and will be best under the spindle, and, by the rapid rotation of the
latter, a sharply-‘convex polishing-surface is
stood from the drawing.
Figure 1 shows the device complete. Fig.2 formed, which will enter minute depressions
shows the conical elastic cushion and sand andv cavities with ease. When the pressure
paper collar detached. Fig. 3 is a longitudinal . is removed the rubber cushion will again re
section of the device, as shown in Fig. 1. Fig. sume its usual position.
‘This result may be better attained by ar
4 shows the spindle. Figs. 5 and 6 show vari
ous forms of the spindle, with the elastic ranging the parts, as shown in Fig. 5, allow- ‘,
ing the polishing~collar to project beyond the "
cushion attached.
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My invention consists of an implement or
1
A is the shank of the spindle, the size and
rubber cone about as far as the latter projects
new ones supplied, as wear or injury may re
elastic cushion some ?ne polishing material
‘shape being adapted to ?t the common lathe beyond the end of the spindle. I much pre
head. B is the head, which may be made fer this construction, although either may be
conical, and corrugated, as shown in Fig. 4, used.
The form of the elastic cushion will readily
or straight and smooth, as seen in Fig. 6. U
is the elastic cushion, which is, preferably,T commend itselt‘ to any operator, although I
made of rubber, conical in form, and bored‘ claim no novelty therein. The conical surface
completely through, as shown in Fig. 6. D‘ will cut the material composing the arti?cial
is the sand-paper collar, which is made to ?t plate with great rapidity.
After the plate is cut down and trimmed to
the cushion tightly, the several parts thus
named being all constructed so that they the necessary dimensions and shape the collar
may easily be detached from each other, and may be removed, and upon the surface of the
\ All dentists are familiar with the difficulty
experienced in shaping and polishing the
plates used to support arti?cial teeth. Not
only is the material of which they are com
, posed hard to out, but the peculiar shape of
may be lightly sprinkled. The plate being
then applied will be polished most brilliantly
in a few moments.
What I claim, and desire to secure by Let
ters Patent, is—
1. In the dental polishing-tool described,
the plates, and the numerous angles, the mi the conical elastic cushion 0, adapted to ?t
nute cavities, and the delicately-formed sinuses, the spindle-head B, and having the annulus d
l
2
projecting beyond the extremity of the spin
dle B, as andi'or the purpose described. '
.
the end of the cushion,
substantia'l'iy as‘end
- for the'purpose set forth.
2. In a dental polishing-tool, such as de
' scribed, an elastic, conical cushion, 0, having
its extremity d projecting beyond the end of
the spindle, and'covered by a sand-paper co1-'
lair, which has a portion, 0, extending beyond
LUTHER F. LOOKE.
I
Witnesses:
R.,T. SMITH,
-JOHN TAYLOR.