A MACHINE TO CUT OUT AFTER PATTERNS, LINEN, CLOTH, AND OTHER STUFFS."
Year: 1878

page_text: LETTERS PATENT to Gustave Dittmar, of Berlin, Prussia, for the Invention of
A MACHINE TO CUT OUT AFTER PATTERNS, LINEN, CLOTH, AND OTHER STUFFS."
A comunication from Philippsohn and Leschziner, of Berlin, Prussia.
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Sealed the 25th February 1879, and dated the 30th August 1878.
PROVISIONAL SPECIFICATION left by the said Gustave Dittmar at the Office
of the Commissioners of Patents on the 30th August 1878.
GUSTAVE DITTMAR, of Berlin, . Prussia. "A MACHINE TO CUT OUT AFTER
PATTERNS, LINEN, CLOTH, AND OTHER STUFFS." [A communication from Philipp-
sohn & Leschziner, of Berlin, Prussia.]
In this Invention for a machine to cut out after patterns, linen, cloth, and other
stuffs, a horizontal shaft carries a circular cutter, the edge being bevilled and
sharpened with teeth like a circular saw, or without teeth, according to the nature
of the fabrics to be cut. Motion is imparted to the cutter from any suitable power
by means of belts or other suitable known mechanical means, so that the number
of revolutions of the cutter will be about, say, four thousand revolutions per
minute.
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The cutter runs before a disc provided with a rim to guard- the hand of the
operator, who grips a handle above the revolving cutter in order to guide the
machine along the lines of the pattern in the desired directions.
From the box wherein the shaft of the cutter is running an arm descends, and
carries the foot of the maching, which is a main feature of the Invention. This
foot is made of brass, and is of form similar to that of tailors' irons, flat at the
bottom and pointed in front, in order to enable the workman to push the foot under
the cloth or linen to be cut, which may be spread on the table in layers piled up to
Price 6d 1
.

page_text: a number of one hundred, or to a thickness of about two inches, the uppermost
carrying the design of the pattern.
The top of the foot is formed of a steel plate, fixed to the lower part of the brass
by a dovetail tenon and screw moving in a slot so as to admit of its position being
altered.
The steel plate is provided with a notch, wherein the circular cutter revolves.
When from use of the latter and its having been ground down to a smaller diameter
the steel plate may be moved towards the circumference of the cutter and tightened
again, whereby great advantage is insured, that the cloth to be cut finds always a
good support close to the cutting edge, and the fibres of the fabrics are not torn in
the machine by the teeth of the cutter.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Gustave Dittmar in the Great Seal: Patent Office on the 25th
February 1879.
GUSTAVE DITTMAR, of Berlin, Prussia. "A MACHINE TO CUT OUT AFTER
PATTERNS, LINEN, CLOTH, AND OTHER STUFFS." A communication from Philipp-
sohn and Leschziner, of Berlin, Prussia.
The main part of this machine is a fast revolving disc of sheet steel, the edge
being bevelled and sharpened with teeth like a circular saw, or without teeth,
according to the nature of the fabrics to be cut. These fabrics, linen, cloth, leather,
or other materials are spread on a table in layers piled up to a thickness of about
two inches, the uppermost carrying the design of the pattern. The operator leads
the revolving cutter along the lines of the pattern, the arrangement of the machine
being such as to admit free motion of the cutting apparatus in all directions upon
the surface of the table.
The revolving cutter and accessories can be exchanged against another cutter-in
form of a common knife blade, in order to enable the workman to follow the lines
of pattern in all corners, as hereafter to be described, which would be impossible
with the revolving cutter.
In the Drawings accompanying the Specification,-
Figure 1 is a perspective view of the whole machine.
b. Figure 2 is a vertical section through the machine proper.
C
Figure 3 is a front view of the revolving cutter and foot.
..
Figure 4 is a section along the line x, x, Figure 2, showing also the under surface
of the end of arm A, Figure 1.
Figure 5 is a detail view and section of the hinge connecting the arms A and B,
Figure 1.
}
Figures 6 and 7 illustrate another disposition of the foot of the inachine.
Figure 8 is a front view of the machine provided with-the-second form of cutter,

page_text: the lid being taken away, to show the inside; and Figure 9 is a section of the
same.
i
A pillar C, Figure 1,.is provided with a vertical shaft carrying two pulleys E
and F, the former to receive the power from any disposable motor, the latter to
transfer it by means of the belts G and H and the pulleys I, K, and L upon the
shaft of the machine proper. The pulleys I and K. (Figures 1 and 5) are fixed to a
pin M running in a brass bush, which forms the hinge of the two arms A and B.
Both arms can be freely turned round this bush, the arm B turning upon the
shafts D, thereby the operator is enabled to lead the cutter every where upon the
table.
The pulley I (Figures 1 and 2) is keyed to the vertical shaft a, running in a brass
bush b, with a receptacle for oil or grease on the top end, which is driven into a hole c
drilled vertically into the outer end of the arm A.
The lower end of the shaft a is hollow, and receives a smaller shaft d, which may
be pushed in or pulled out in order to move the cutter in a vertical direction from
the table if necessary. The shaft d is provided with a groove, and the hole in the
shaft a with a projecting tongue, so that the shaft d must follow the revolutions of
shaft a, which by the bevil wheels e, e, are transferred to the horizontal shaft f and
to the cutter g.
The lower part of hole c in the. arm A is bored out to a wider diameter, and
receives the ring of a brass socket h upon which the wooden handle is fixed by
screwing down the nut i. A plate k, Figures 2 and 4, is fastened to the lower
surface of the arm A by a set screw, and prevents the lower part of the machine
from falling out.
"
The shaft runs in a closed casing, which is firmly connected with the other
parts. The oil descends from the upper receptacle of brush b, and lubricates every
part of the cutting apparatus.
The cutter g, Figures 2 and 3, runs before a semicircular disc provided with a
rim, to guard the hand of the operator when he seizes the wooden handle above
the revolving cutter and leads the machine along the lines of the pattern.
The foot m of the machine is made of brass, and has a form similar to that of
tailor irons, flat at the bottom and pointed in front, in order to enable the workman
to push it under the cloth to be cut. It is secured to the semicircular disc by
screws n, n, (Figure 3) sunk in vertical slots, so that the foot can be fixed from
time to time in a higher position, according to the wear of the cutter or its reducing
in size by grinding, thereby making sure that the edge of the cutter always runs
closely in the notch of the foot provided for it. This is absolutely necessary, in
order to give the cloth a good support close to the cutting edge and to prevent the
fibres of the cloth from being torn into the machine by the cutter.
Figures 6 and 7 show another arrangement of the foot m. It carries a top plate
of steel o fixed to the lower part of brass by a dovetail tenon p and screw moving
in a slot q in such a way that the position may be altered.
The steel plate is provided with a notch, wherein the circular cutter closely
revolves. After much use of the latter and grinding down to a smaller diameter
the steel plate o is moved towards the circumference of the cutter and tightened
again by the screw..
Figures 8 and 9 show a second cutter, in form of a common knife blade, working
up and down. When the lines of the pattern form angles or sharp corners this part
of the machine is exchanged for the revolving cutter, which is taken out by
loosening the plate k, and the blade cutter being provided with a similar plate k, is
fixed to the machine by turning the notch of plate / (Figure 4) under the head of
the set screw, which latter is then tightened. The shaft d and bevel wheel e,
Figures 8 and 9, transfer their motion to a bevel wheel 8, which by a pint moving
in a loop u of the sliding bar v transfer the rotary into a straight lined motion.
The knife blade w, secured in a notch of the sliding bar by screws or any other
suitable means, follows this motion, and severs the fabrics when led forward.
Having now described and particularly set forth the nature of the said Invention,

page_text: and the manner of carrying the same into effect, I would have it understood that
what I claim is,―
First. The foot of the above-described machine in form of a tailor iron attached
by set screws, so as to admit a change of position when a decrease of diameter of
the cutter makes it necessary; substantially as above described, and for the purposes
set forth.
Second. The foot of the above-described machine in form of a tailor iron, being
provided with a top plate o, as described with reference to Figures 6 and 7, which
can be moved towards the circumference of the cutter, for the purpose above
forth.
set
Third. The combination of a revolving cutter with the kind of feet described and
represented in the accompanying Drawing.
Fourth. The arrangement of the shafts a and d, the one sliding in the other; so
as to admit a vertical lift of the cutter.
> -
Fifth. The combination of the machine with a vertically-moving knife blade,
(as represented by Figures 8 and 9, and as described in the foregoing Specification.
Sixth. The disposition of swinging arms, as described, in order to admit free
motion of the cutter without interfering with the means by which the power is
transferred to the cutter.
In, witness whereof, I, the said Gustave Dittmar, have hereunto set my hand
and seal, this Tenth day of February, in the year of our Lord One
thousand eight hundred and seventy-nine...
OZIOMA IN DUTmirin