An Improved Ink Eraser.
Year: 1888

page_text: Date of Application, 6th Sept., 1888
Complete Specification Left, 5th June, 1889-Accepted, 13th July, 1889
An Improved Ink Eraser.
We JOHN HERBERT MIALL Bank Clerk and JoHN HENRY WOOD Clerk both of
17 Downs Road Hackney in the county of Middlesex do hereby declare the nature of
this invention to be as follows:
The object of our invention is to provide for use a cheap but very efficient and con-
venient ink eraser.
To carry out this object we make a small block of wood or other suitable and con-
venient material and this block in side elevation is preferably of a rhombic or rhom-
boidal shape while in transverse vertical section it is. preferably conical or nearly so
and this block forms the handle of our ink craser. Along the narrow edge of this
block we make a groove preferably dovetailed and in this groove is placed or along
the same is slid the steel or other blade with the required sharp edge outside the block
and this blade may project in all directions as far beyond the block as may be desired
and the ends thereof may be formed and made of such shapes as may be convenient.
The groove may be somewhat tapered to ensure that the blade shall be tightly clasped
therein and a set screw may pass through the block from the upper and thicker edgo
thereof to the groove to clamp the blade. The edges or corners or other parts of the
block may also be rounded off or otherwise fitted so that when the desired erasure has
been completed by the blade this part may rub down and smooth the surface from
which this erasure has been made. This eraser may be inserted into any covering or
sheath for convenience of carrying and the blade obviously can easily be removed
from the block when desired for sharpening or otherwise.
Dated this £th day of Santamber 1888
COMPLETE SPECIFICATION.
An Improved Ink Eraser.
We JOHN HERBERT MIALL Bank Clerk and JOHN HENRY WOOD Clerk both of
17 Downs Road Hackney in the county of Middlesex 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:
The object of this our invention is to provide for use a cheap but extremely efficient
and very convenient ink eraser.
In the accompanying drawing we have shewn what we consider to be the best and
most suitable style and form of this our ink eraser whereof Figure 1 is a side elevation
and Figure 2 is an end elevation.
We make a small block A of wood or other suitable and convenient material and or
This block A
the desired shape which block forms the handle of this our ink eraser.
in side elevation is preferably as is shewn in Figure 1 of a rhombic or. rhomboida!
shape for when it is made of this shape not only is it extremely convenient for use and
handling but also it obviously allows the operator clearly to discern the surface on
which the operation is being performed and the manner in which the same is so being
performed and the rate of progress thereof and this block A in end elevation is
preferably as is shewn in Figure 2 of a triangular or trilateral shape for when it is made
of this shape the broader part of the same can be firmly grasped by the hand of the
operator whereby the desired angle of the blade of this ink eraser with the surface on
which the operation is being performed will the more easily and surely be maintained
and the operation will be performed with the greater facility.

page_text: Along one the narrow edge of the block A we make a groove B preferably as is
shown in Figure of a dovetailed shape in transverse area and in this groove B is
placed or along the same is slid a steel or other blade D with the required sharp edge
outside the block A and this blade D may project in all directions as far beyond the
block A as may be desired and the ends thereof may be formed and made of such
shapes as may be convenient and suitable the arrangement and shape shewn in Figure 1
being we consider the best. The groove B as also the blade D can very conveniently
be slightly tapered to ensure that when the point of the blade D has been entered in
the groove B from the rear of the block A and has then been passed therethrough or
slid along the same into position for use this blade D shall be tightly clasped in and
by the groove B and thus be rendered quite rigid and firm therein for which purpose
also a set screw may if desired be passed through the block from the upper edge
thereof to the groove to engage the back of the blade and thus clamp the same against
the walls of the groove.
The edges and corners and other parts of the block may be rounded off or be
covered or be otherwise fitted not only for convenience of handling but also and
chiefly that when the desired erasure has been completed or nearly completed by the
blade these parts may be capable of completing the erasure or of rubbing down and
smoothing the surface from which this erasure has been made. In the drawing we
have shewn one convenient method of fitting the other parts of the block according
to which a groove is made along the broader edge also of the block A wherein is
inserted a piece or block E which may be of such material as may be suitable for the
purposes hereinbefore mentioned such for example as india rubber or the usual com-
pound material for completing the erasure or ivory or bone or metal for rubbing down
and smoothing the surface.
This eraser may be inserted into any covering or sheath for convenience of carrying
and the blade obviously can easily be removed from the block when desired for
sharpening or otherwise and as easily be replaced in position therein.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
The improved ink eraser substantially as hereinbefore described and shewn in the
accompanying drawing.