A NEW or improved Instrument for uning divisal for Backing Mineral Teeth and for other Purposes.
Year: 1887

page_text: Date of Application, 1st June, 1887
Complete Left, 10th Jan., 1888
Complete Accepted, 16th Mar., 1888
A NEW or improved Instrument for uning divisal
for Backing Mineral Teeth and for other Purposes.
I EDWARD THOMAS ASH 19 Richmond Terrace S. W. Clapham Road in the County
of Surrey Dentist do hereby declare the nature of this invention to be as follows:-
This invention relates to a new or Improved means for cutting the holes in Metal
used for backing Mineral Teeth and for other purposes which the inventor designates
by the name of the Perfected Pin hope Nippers and which consists of the ordinary pin hole
Nippers having the usual cutting punch and hole and having also on one of its beaks
an adjustable gauge hole and guide pin which can be moved and fixt by means of the
set screw at any required distance from the cutting hole so that the operator is
enabled to cut the holes in the Metal backing at exactly the same width apart as the
pins in the tooth to be backed or at any distance when used for other purposes.
1000

page_text: for Backing Mineral Teeth and for other Purposes.
I EDWARD THOMAS ASH 19 Richmond Terrace Clapham Road S.W. in the County
of Surrey Dentist, 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 :-
This invention relates to a new or Improved means for cutting the holes in Metal
used for backing Mineral Teeth and other purposes which the inventor designates by
the name of the Perfected Pin hole Nippers having the usual cutting punch and hole
and having also on one of its beaks an adjustable gauge hole and guide pin which can
be moved and fixt by means of the set screw at any required distance from the cutting
hole so that the operator is enabled to cut the holes in the metal backing at exactly
the same width apart as the pins in the tooth to be backed or at any distance when
required for other purposes.
This instrument consists of the ordinary Pin hole Cutters used by Dentists and
others, upon one of the beaks of which is placed an adjustable gauge Å, as shown in
Fig. 1.
The socket A upon which the gauge is placed is formed of Metal, or other hard
substance, and slides freely on the beak of the instrument, and can be fixed at any
required distance by means of the set screw B Fig. 1.
Inside the upper part of the socket is fixed an elastic plate C Fig. 3, with a measuring
hole D, at the end nearest the cutting hole E.
On the top of the socket there is another elastic plate F Fig. 2, with projecting
sides in one end of which is fixed a guide pin G Fig. 1, projecting a short distance on
cach side, the other end is attached to the sliding socket by a pin H, so that it can be
moved into possition as in Fig. 2. for cutting the second hole.
To use the instrument lift the guide pin by the projections a and a¹, Fig. 2, on the
elastic plate F, and turn it away from the beak as shown in Fig. 3. After punching
the first hole in the metal backing release the set screw B, take the tooth and fit one
pin in the measuring hole D. Fig. 3, and the other in the cutting hole E, in the
head of the tool holding it with the beaks while fixing the set screw B Fig. 1, then
remove the tooth, push the guide pin G, back into the measuring hole D, place the
hole already cut in the metal backing over the guide pin G and punch the second
hole.
The result will be that when the tooth is placed on the metal backing the pins will
be found to fit exactly the two holes.
The instrument can also be used for other purposes where holes in metal or other
substances are required to fit fixed pins.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be constructed and used, I declare that what I
claim is :-
First. The method of measuring the relative positions of fixed pins, and cutting
holes in metal or other substances so that the holes and pins correspond in distance,
substantially as herein before set forth.
Secondly. The accomplishing of this by means of one instrument substantially as
herein before set forth.