AN IMPROVED RULER WITH PAPER KNIFE
Year: 1884

page_text: I OTTO MEYER of Altona in the Kingdom of Prussia do hereby declare the
nature of my said invention for AN IMPROVED RULER WITH PAPER KNIFE to be
as follows:-
This invention relates to the construction of a combined instrument applicable
as a ruler, as well as also a knife for cutting paper and such like articles upon
exactly straight lines.
The instrument consists of two main portions which can be put together and
kept in position by means of end clamps. Each of these parts has at its inner
adjacent edge a fine saw-cut for the reception of the knife-blade which latter may
be formed of one piece, or of two or more pieces. The back of the knife or knives
is or are embedded in the saw-cut of the one part of the instrument whilst the
cutting edge of the knife or knives projects from this part and the said projecting
odge, when the two parts of the instrument are put together will lie in the saw-
cut of the other part and in this closed position the instrument fully appears like a
flat ruler of common shape.
When the two main parts are separated the cutting edge of the knife projecting
from the top part, allows this part, to be applied as a knife for cutting paper at
straight lines and also at curved lines if the ends of the knife are rounded off.
When the cutting edge is formed of several blades they are set in a straight line,
one after the other and attached to the receiving portion of the instrument in
a similar way as before described with reference to one knife.
These parts of the knife are not formed with a cutting edge after a straight line,
but each is formed with a tapering edge, in consequence of which the cutting edge
appears like a straight saw of very wide teeth. This construction of the knife
gives the advantage that straight cuts can be executed without requiring much
exertion of pressure as is necessary in the case of a knife with a straight edge
running right through.
The clamps used for connecting top and bottom part of the instrument are
formed as right angle pieces in which case the instrument can be used for ruling
paper at right angles and also for cutting paper at right angles.
Dand th
1004
WALTER A. BARLOW,
6, St. Paul's Churchyard, E,O.

page_text: I OTTO MEYER, of Altona, in the Kingdom of Prussia do hereby declare the
nature of my invention for "AN IMPROVED RULER WITH PAPER KNIFE" 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 the construction of a combined instrument applicable
as a ruler, as well as also a knife for cutting paper and such like articles upon
exactly straight lines..
The instrument consists of two main portions which can be put together and
kept in position by means of end clamps. Each of these parts has at its inner
adjacent edge a fine saw-cut for the reception of the knife-blade, which latter may
be formed of one piece or of two or more pieces. The back of the knife or knives
is or are imbedded in the saw-cut of the one part of the instrument, whilst the
cutting edge of the knife or knives projects from this part and the said projecting
edge, when the two parts of the instrument are put together, will lie in the saw-
cut of the other part and in this closed position the instrument fully appears like'
a flat ruler of common shape.
When the two main parts are separated the cutting edge of the knife projecting
from the top part, allows this part to be applied as a knife for cutting paper at
straight lines and also at curved lines, if the ends of the knife are rounded off.
When the cutting edge is formed of several blades they are set in a straight line,
one after the other and attached to the receiving portion of the instrument in a'
similar way as before described with reference to one knife.
These parts of the knife are not formed with a cutting edge after a straight line,
but each is formed with a tapering edge in consequence of which the cutting edge
appears like a straight saw of very wide teeth. This construction of the knife
gives the advantage that straight cuts can be executed without requiring much
exertion of pressure as is necessary in the case of a knife with a straight edge
running right through.
The clamps used for connecting top and bottom part of the instrument are
formed as right angles in which case the instrument can be used for ruling paper
at right angles and also for cutting paper at right angles.
'
The invention is illustrated in the accompanying sheet of drawings wherein
Fig 1 illustrates a ruler containing one straight knife e and Figs 1a and 1b are
sections on lines m, n and o,p respectively. The ruler is composed of the top part á
and bottom part 6 which are shown in Figs 2 and 3 respectivelly in separated'
positions c and c¹ are clamps by which the parts are kept together to form a ruler
as in Fig 1.
Fig 4 is top view of Fig 3.
Figs 5 and 5 illustrate the top part of a ruler furnished with a knife composed
of three parts e¹, e¹, c¹.
Figs 6 and 6 illustrate a modification of this invention according to which
circular rotating knives e, e³, e are supplied instead of flat knives as before
described and Figs 7 and 7° illustrate another modification after which the edges
of the circular knives are indented which may be of advantage for certain work
and operations.

page_text: Having now particulary described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is
A ruler composed of two parts a and b said parts being detachable from each
other and one of which parts contains one or more knives, that may be applied for
outting paper or other materials, as and for the purpose herein set forth.
WALTER A. BARLOW,
Agent for Otto Meyer.