IMPROVEMENTS IN DEVICES FOR ERASING PENCIL INK OR OTHER MARKS."
Year: 1882

page_text: LETTERS PATENT to Lewis Wolff, of York Road, Battersea, in the County
of Surrey, for an Invention of "IMPROVEMENTS IN DEVICES FOR ERASING
PENCIL INK OR OTHER MARKS."
PROVISIONAL SPECIFICATION left by the said Lewis Wolff at the Office
of the Commissioners of Patents on the 20th November 1882.
LEWIS WOLFF, of York Road, Battersea, in the County of Surrey,
MENTS IN DEVICES FOR ERASING PENCIL, INK, OR OTHER MARKS
"
" IMPROVE-
My invention relates to devices for erasing pencil, ink and other marks from
paper or other material and comprises a case or holder so constructed that when
not in use the erasing material can be folded within the same and be thereby kept
clean when carried in the pocket.
According to the said invention I provide two thin pieces of wood or other
suitable material, preferably in the form of an oblong, and between these I place at
one end a piece of india-rubber and at the other end a piece of ink-eraser (which
is india-rubber incorporated with glass-powder or other suitable cutting material),
I then pass a rivet or screw through each of the said ends, thereby securing the
erasing material between the two sides of the holder, but leaving each piece of the
said material free to turn upon its pivot. The two pieces of erasing material are
so formed that when not in use they can be folded between the two sides of the
holder and be thereby protected from dirt. If desired, pins or other suitable stops
can be arranged in the bolder in such a manner as to form supports to prevent the
erasing material from turning round when in use. Also if desired the holder can
be adapted to hold one kind of erasing material only in which case the two sides
of the said holder at the end which has no erasing material must be separated or
kept apart by a piece of wood or other suitable material placed between them and
secured by a rivet or the like.
In some cases I may pivot the piece of pencil eraser or ink eraser in one end of
a pencil in such a manner that it may be turned inside the wood of the pencil
when not in use. For this purpose I provide a slit or recess in the said pencil

page_text: Like letters indicate the same parts throughout the drawing
a, a¹, are two thin pieces of wood or other suitable material which are by
preference made in the form shown, although other forms may be used, and which
constitute the case or holder for the erasing material; 6 is a piece of india-rubber,-
and c is a piece of ordinary ink-eraser, that is to say, india-rubber incorporated
with glass-powder or other suitable material.
These two pieces of erasing material are pivotted in opposite ends of the said
case or holder by means of screws d, d', in such a manner that they can be rotated
upon the said screws to open or close the device
To facilitate the opening of the said device, the case or holder is made with
notches or recesses e so that the erasing material can be easily taken hold of by
the finger and thumb.
The two pieces b, c of erasing material, when the device is closed, are cut flush
with the edges of the case or holder to give the device a neat appearance; the free
ends of the said pieces are pointed or cut to form an acute angle as shown in
Figure 1, so that when the device is closed the inclined parts will correspond one
with the other and there will be no waste of space in the case or holder. Moreover
the pointed form thus given to the erasing material facilitates its use.
1 sometimes provide pins f, or other suitable stops in the holder, in order to
support the erasing material and prevent it from being turned back too far when
the device is open and in use.
In the device shown in Figures 3 and 4, the holder is adapted to receive only
one piece g of erasing material, which is pivotted on the rivet d. In this device,
the two sides a, a¹ of the said holder, at the end which has no erasing material
are separated or maintained at a suitable distance apart by a piece h of wood or
other suitable packing firmly secured between them by means of rivets 2, ¹; or
the holder may consist of one piece of wood of suitable size having a recess formed
in it to receive the eraser; the packing his then dispensed with.
I may use either screws or rivets for securing the erasing material in the case or
holder.

page_text: Having thus fully described my said Invention and the manner of performing
the same I wish it understood that I claim.
A device for erasing pencil, ink, or other marks, consisting of a case or holder
having one or more pieces of erasing material pivotted thereto, substantially as
above set forth for the purposes specified.
In witness whereof I the said Lewis Wolff have hereunto set my hand
and seal this Eighteenth day of May in the year of our Lord One
thousand eight hundred and eighty three.
LEWIS WOLFF (LS.)