Improved Apparatus for Clamping or Securing Paper or other Materials while being Cut, especially applicable to Envelope. Cutters.
Year: 1889

page_text: Date of Application, 1st Nov., 1889
Complete Specification Left, 17th Jan., 1890-Accepted, 1st Mar., 1890
PROVISIONAL SPECIFICATION.
Improved Apparatus for Clamping or Securing Paper or other
Materials while being Cut, especially applicable to Envelope.
Cutters.
We THOMAS BENJAMIN BACON and CHARLES MORGAN both of Tabernacle Street
Finsbury, Middlesex Envelope Makers do hereby declare the nature of this invention
to be as follows
The object of this Invention is to produce an apparatus which will prevent flexible
materials such as paper leather and other substances from buckling in the middle
when cut with hollow knives or cutters, such buckling being in many cases a source
of great waste owing to the articles being of unequal size and the edges very ragged.
This defect we propose to remedy by hoiding the paper flat, while being cut, by
means of a rigid plate held down by springs which are strong enough to prevent
buckling of the material and sufficiently elastic to allow tho cutter to be pressed
through the materials in the usual way the whole apparatus being easily attached to
any ordinary cutter and used with any ordinary sized machine which cannot be done
with the spring cutters now in use.
According to our invention, we attach to the cutter, preferably to the crossbar at
the top thereof, a plate preferably of metal ; fastened to this plate by means of screws
or other suitable means are indiarubher balls preferably four. We also attach to the
opposite side of the said balls, by suitable means, a second plate of metal or other
rigid material sliding inside the hollow cutter.
When the cutter is placed on the paper or other flexible material, and pressure
applied thereto, the bottom plate holds the material flat and prevents buckling, the
indiarubber balls acting as springs and transmitting pressure to the bottom plate.
Instead of indiarubber balls we may use short pieces of indiarubber tubing
preferably fitted with short conical pieces of hard material such as metal or wood. at
each end, or even spiral or other springs made of steel or other suitable material.
When the knife or cutter is much worn a suitable liner or liners may be inserted
between the upper edge of the cutter and the top plate.
Dated this 1st day of November 1889.
ERNEST SALAMAN,
65 & 66, Chancery Lane, London, W.C., Agent for Applicants.
COMPLETE SPECIFICATION.
Improved Apparatus for Clamping or Securing Paper or other
Materials while being Out, especially applicable to Envelope
Cutters.
THOMAS BENJAMIN BACON CHARLES MORGAN both of Tabernacle Street, Finsbury, in
the County of Middlesex Envelope makers 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 Invention is to produce an apparatus which will prevent flexible
materials such as paper leather and other substances from buckling in the middle
when cut with hollow knives or cutters, such buckling being in many cases a source
of great waste owing to the articles when cut being of unequal size and the edges
very ragged.
This defect we propose to remedy by holding the paper flat while being cut by
means of a rigid plate held down by springs which are strong enough to prevent
buckling of the material and sufficiently elastic to allow the cutter to be pressed

page_text: any ordinary cutter and used with any ordinary sized machine which cannot be done
with the spring cutters now in use!
DESCRIPTION OF THE DRAWINGS.
Figure 1 is section of cutter with apparatus constructed according to this invention
attached thereto.
Figure 2. is plan of same with half of top plate removed.
Figure 3 is plan of bottom plate.
'Figures 4 and 5 are details hereafter referred to.
According to our invention we attach to the cutter a preferably to the crossbars b and c
at the top thereof a plate d preferably of metal by means of the screws ef.
Fastened to this plate by means of screws g or other suitable means are indiarubber
balls preferably four in number.
We also attach to the opposite side of the balls by suitable means such as the screws i
a second plate of metal or other rigid material sliding inside the hollow cutter a.
When the cutter a is placed on the paper or other flexible material and pressure
applied thereto the bottom plate k holds the material flat and prevents buckling
the indiarubber balls acting as springs and transmitting the pressure to the bottom
.plate.
Instead of indiarubber balls we may use short pieces of indiarubber tubing I as
shown in Figure 4 preferably fitted with short conical pieces m n of hard material
such as metal or wood at each end and secured to the top and bottom plates by screws
passing through suitable collars o see Figure 4 plan of collar being shewn at Figure 5
or we may use other suitable means such as spiral or other springs made of steel or
other suitable material.
When the knife or cutter a is much worn a suitable liner or liners may be inserted
between the upper edge of the cutter a and the top plate d.
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
I. In apparatus for clamping or securing papers or other material while being cut
the use of indiarubber balls or their equivalent as and for the purpose specified.
II. In apparatus for clamping or securing papers or other materials while being
cut the combination of the top and bottom plates d and k having the indiarubber
balls secured thereto substantially as described and shewn.
Dated this 17th day of January 1890.
ERNEST SALAMAN,
65 & 66, Chancery Lane, London, Agent for Applicants.