Improvements in Cutting-apparatus for Linoleum, Paste-board, and the like.
Year: 1899

page_text: Date of Application, 17th Aug., 1899 -Accepted, 10th Feb., 1900
COMPLETE SPECIFICATION.
Improvements in Cutting-apparatus for Linoleum, Paste-board,
and the like.
I, CHRISTOPH MÜLLER, of 19. Fruhlingstrasse, Munich, in the Empire of
Germany, Carpet Manufacturer, 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:-
Hitherto no suitable instrument has been introduced for the cutting of linoleum,
paste-board, paper, etc., which would meet several simultaneous requirements.
In the cutting of linoleum for covering floors, which first comes into considera-
tion it frequently happens that the pieces which come into contact with one
another are not straight. As it involves a greater labour to make both pieces per-
fectly straight by trimming than by laying the edge of one piece on the other
and then cutting the lower piece exactly according to the edge of the upper one,
the latter process is preferred. In this way the pieces fit together, as if their
edges were perfectly straight owing to the irregularities therein being mutually
compensated, and there is not the least gap between them.
In carrying out this operation it happens very frequently for instance that the
cutter cuts into the upper piece of linoleum serving as a rule, or diverges from
the proper direction.
Further, it happens frequently as soon as the pressure of the hand is relaxed
on the upper piece, that the latter, being pressed by the cutter is pushed out of the
proper line. Finally it is prejudicial to the cutting edge when it cuts through
the linoleum together with the flooring on which the linoleum is rolled out
especially when the flooring is of stone. If the cutting be effected only as far as
the underpiece the cutting edge is preserved, and the underpiece can be easily
cut by an ordinary cutter.
In the cutting of paper, cardboard, etc., similar conditions prevail. The rule
or the drawing-board is often exposed to being cut. The trouble taken to avoid
this leads moreover to the cutter being insecurely held and to improper cuttings
being made adjoining the cutting line.
When the pressure on the rule is relaxed, the rule can easily slip and in this
case also improper cutting is possible. Owing to the cutting being often too
deep, the cutter is injuriously affected, as is also the cutting or drawing-board.
The improved cutting-instrument obviates all these disadvantages and fulfils
many different requirements. It is shown in the accompanying drawing, in
which
Fig. 1 is a side view.
Fig. 2 is an end view showing the cutter head in section.
Fig. 3 is an inverted plan and Figs. 4 and 5 are back and front view respectively
of a device for facilitating the adjustment of the cutter.
Fig. 6 is a sectional elevation of the cutter head showing the instrument in
use.
Through the cutter head a runs a groove in which the cutter b together with a
bent wire piece e is placed the two being held in the fixed position by means of
a small plate pressed against them by means of screws Fig. 2. The cutter can
be taken out of or pushed into the bent-wire piece. The cutter-head has an
ouique arm or extension a¹ to which the handle is fixed.
The measuring part Figs. 4 and 5 is furnished on the side f with a horizontal
measuring scale and on the side g with a vertical one, The first serves for

page_text: measuring the thickness of the linoleum, the second, after being placed on the
cutter head Fig. 5. being employed for adjusting the cutting edge and the ends
of the bent wire piece at a certain distance from the under surface of the cutter-
head, in the manner indicated below. The measuring device is widened at its
upper part forming as it were a casing so that when placed on the cutter-head
it encloses the same, and is so cut away on one side that room is formed for the
end of the small plate d and for the screws e.
Assuming that the linoleum is only 4 centimetres thick and of two overlapping
pieces the lowermost only has to be cut through, Fig. 6, the cutter must be
adjusted downwards accordingly, a millimetre however, being deducted from the
depth of the lower piece for clearance, the total depth of the cutter, allowing for
the 4 millimetres corresponding to the thickness of the upper piece being thus
millimetres from the cutter-head as shown in Fig. 5. The ends of the bent wire
piece should project nearly as far as the thickness of the upper piece, nevertheless
with a similar deduction of about 1 millimetre, in order that they may not graze
the under piece when the cutter in cutting has reached the greatest depth and
the cutter head is pressing on the upper piece.
The adjustment being effected the cutter and bent wire piece are firmly pressed
by tightening the screws e and the measuring piece is removed. In the cutting
operation Fig. 6 wherein the handle and the arm are turned towards the work-
man, the cutter head is pressed firmly down from above and from the side against
the edge of the upper piece. Being kept down by the vertical pressure the upper
niece cannot slip and no incision can occur in the edge, as the front end of the
hent wire piece which guides the cutter along the edge, prevents any movement
of the cutter against the upper edge. Finally the cutter cannot penetrate below
ne lower piece, being prevented by the cutter head bearing on the upper piece.
If, in consequence of the peculiar conformation of the room, a different position
of the instrument or cutter is necessary, the latter can be turned about accordingly.
In the case of paper and the like being cut the cutter is replaced by another
with an oblique edge ground for paper cutting.
Further, instruments for this purpose can also be made specially light. The
cutter in such case, is adjusted from the cutter-head to project a distance slightly
greater than the thickness of the rule so that penetrating just through the paper
it enters the board beneath but to the slightest extent. The ends of the bent-
wire piece which slide with the cutting edge along the rule, protect the latter
against being cut and enable the cutter to be firmly pressed on to and against
the rule and thereby ensure a certain and exact cut.
Having now particularly 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
1. A cutting-apparatus for linoleum, paste-board and the like, in which a
cutter together with a bent-wire piece e which is independent of the same, can
be adjusted according to the intended depth of the cut in a cutter-head a which,
when the cutting is being effected presses on the rule or equivalent the ends
of the bent-wire piece preventing this edge from being cut into.
2. A cutting-apparatus, according to Claim 1, the distinguishing feature being
that for the adjustment of the cutter and of the bent-wire piece to the intended
width of the cut, it carries a removable shoe or casing, which surrounds the cutter-
head, and is furnished with a measuring scale the zero point of which coincides
with the lower edge of the cutter-head.
Dated this 15th day of Amund 1000
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.