Improved Machine for Cutting Long-shavings or the like..
Year: 1898

page_text: Improved Machine for Cutting Long-shavings or the like..
I, ANDERS AUGUST WESTMAN, of 21, Gamla Kungsholmsbrogatan, Stockholm,
Sweden, Mech. Engineer, do hereby declare the nature of this invention
to be as follows:-
The present invention, relates to improvements in machines for cutting long-
shavings and the like to pieces and has for its object to provide an apparatus
which cuts the shavings into pieces of suitable size, so that the shavings, do not
come out in the form of larger, incompletely cut pieces, as will often be the case
when the apparatus hitherto used for the said purpose is employed. Experience
has shown that the shavings will not always be sufficiently cut to pieces when they
are forced to pass only one time between the edges of a fixed knife and a revolving
knife-drum or cutter as hitherto usual. According to this invention the shavings
are forced to pass several times, if necessary, between the edges of two or more
revolving knife-drums or cutters placed in a suitable box or frame, or between
the edges of one of the said knife-drums and a fixed knife or sharp-edged list until
at last the shavings are cut in such small pieces that they have no tendency to
go back with the knives but fall down through the outlet a', which is usually
connected with an outlet for the shavings. The size of the outlet is determined
according to the desired size of the shavings.
The invention is illustrated in the accompanying drawing where Fig. 1 shows
a vertical section of a machine constructed in the aforesaid manner, Fig. 2 shows
one part of the said machine seen from above partly in section and Fig. 3 shows a
vertical section of the same at right angles to the plane of intersection of Fig. 1.
The machine consists of a movable frame b, placed in a box or support a, in
which frame two or more cutters (knife-drums) d, d', provided with knives c, are
journalled. By means of a suitable gearing the said cutters can be rotated
in the same direction. In the form of carrying out the invention shown in the
drawing, the axle f of one of the cutters d is at one of its ends provided with a
pulley and at the other with a cog-wheel h, which engages with a loose cog-
wheel h¹ placed on a central axle f, which is firmly fixed to the frame b, the said
cog-wheel h¹ engages also with a cog-wheel h² fixed at the end of the other cutter-
axle f. The cog-wheels h, h¹, 2 are suitably provided with oblique teeth, so
that they are able to rotate with great velocity without shaking or noise. The
frame as well as the box or support a are provided with lists k placed in
.

page_text: oblique position and serving to guide the shavings during their movement about
the cutters d, d¹. The edges of the knives c as well as those of the knives or lists m,
which are provided at the frame b, should not be parallel to the axes of the cutters
but somewhat oblique in relation to said axes, in order that the co-operating
edges of the knives placed at each one of the cutters, respectively of one of the
said knives and the edge of one of the lists 71, may work as the two blades of a
pair of scissors, so that they are able to shear the shavings to pieces. The knives c
are as usual attached to the cutters by means of nuts n and are provided with
oblong slots for the bolts o, so that by loosening the nuts the knives can be adjusted
and brought in such a position in relation to each others and to the edges of the
fixed knives or lists m as will be best for the cutting of the shavings.
As Fig. 2 shows, the intermediate cog-wheel h¹ is firmly connected to a socket p
loosely placed on the axle f, or provided with a side-extension corresponding
to the said socket, in which are two holes or borings placed diametrically opposite
each other and corresponding to a similar hole or boring f3 in the aforesaid
axle f2.
When the machine is not in motion the holes in the socket and the hole f³
in the intermediate axle f can be placed in a straight line, by turning one of the
cutters, so that a pin or the like can be put through all of the said holes. This
device constitutes a safety-lock for the cog-wheels h, h1, h2, so that the cutters
can be locked during the adjustment of the knives, in order that the hands may be
protected against injury caused by an accidental movement of the knives during
the said adjustment.
A handle provided at the axle f2 serves to facilitate pulling out of the
frame 6 with the cutters journalled in the same. In order to facilitate the stopping
of the machine and pulling out the frame, when desired, a loose pulley g¹ (Fig. 3)
is placed around a stud or the like in the box a alongside the aforesaid pulley g
attached to the axle f, the belt being carried over to or from the loose pulley gl
by means of a fork embracing the belt when the machine is to be stopped.
The bottom of the box a is formed in such a manner that the shavings are
caused to follow the cutters and to move around the same a great many times, if
necessary, either between the cutters d, d or between one of these and the nearest
of the fixed knives or lists until at last the shavings are cut in such small pieces
that they fall down through the outlet a¹ into a casing or an outlet pipe.
Dated this I and dose of Aumil 1000
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents, 62, Saint Vincent Street, Glasgow,
Agents for the Applicant.
Improved Machine for Cutting Long-shavings or the like.
I, ANDERS AUGUST WESTMAN, of 21, Gamla Kungsholmsbrogatan, Stockholm,
Sweden, Mech. Engineer, 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 present invention relates to improvements in machines for cutting long-
shavings and the like to pieces, and has for its object to provide an apparatus
which cuts the shavings into pieces of suitable size, so that the shavings do not
come out in the form of larger, incompletely cut pieces, as will often be the case
when the apparatus hitherto used for the said purpose is employed. Experience
has shown that the shavings will not always be sufficiently cut to pieces when they

page_text: are forced to pass only one time between the edges of a fixed knife and a revolving
knife-drum or cutter as hitherto usual. According to this invention the shavings
are forced to pass several times, if necessary, between the edges of two or more
revolving knife-drums or cutters placed in a suitable box or frame, or between
the edges of one of the said knife-drums and a fixed knife or sharp-edged list until
at last the shavings are cut in such small pieces that they have no tendency to
go back with the knives but fall down through the outlet a', which is usually
connected with an outlet for the shavings. The size of the outlet is determined
according to the desired size of the shavings.
Referring to the drawings filed with the Provisional Specification, Fig. 1 shows
a vertical section of a machine constructed in the aforesaid manner, Fig. 2 shows
one part of the said machine seen from above partly in section and Fig. 3 shows a
vertical section of the same at right angles to the plane of intersection of Fig. 1.
The machine consists of a movable frame b, placed in a box or support a, in
which frame two or more cutters (knife-drums) d, d', provided with knives c, are
journalled. By means of a suitable gearing the said cutters can be rotated
in the same direction. In the form of carrying out the invention shown in the
drawing, the axle f of one of the cutters d is at one of its ends provided with a
pulley and at the other with a cog-wheel h, which engages with a loose cog-
wheel placed on a central axle f, which is firmly fixed to the frame 5, the said
cog-wheel h engages also with a cog-wheel h² fixed at the end of the other cutter-
axle f. The cog-wheels h, h1, h2, are suitably provided with oblique teeth, so
that they are able to rotate with great velocity without shaking or noise. The
frame b as well as the box or support are provided with ledges placed in
oblique position and serving to guide the shavings during their movement about
the cutters d, d. The edges of the knives as well as those of the knives or lists m,
which are provided at the frame b, should not be parallel to the axes of the cutters
but somewhat oblique in relation to said axes, in order that the co-operating
edges of the knives placed at each one of the cutters, respectively of one of the
said knives and the edge of one of the lists 1, may work as the two blades of a
pair of scissors, so that they are able to shear the shavings to pieces. The knives c
are as usual attached to the cutters by means of nuts n and are provided with
oblong slots for the bolts o, so that by loosening the nuts the knives can be adjusted
and brought in such a position in relation to each other and to the edges of the
fixed knives or lists m as will be best for the cutting of the shavings.
P
As Fig. 2 shows, the intermediate cog-wheel is firmly connected to a socket
loosely placed on the axle 2, or provided with a side-extension corresponding
to the said socket, in which are two holes or borings placed diametrically opposite
each other and corresponding to a similar hole or boring f³ in the aforesaid
axle f.
When the machine is not in motion the holes in the socket and the hole f³
in the intermediate axle f2 can be placed in a straight line, by turning one of the
cutters, so that a pin or the like can be put through all of the said holes. This
device constitutes a safety-lock for the cog-wheels h, h, 2, so that the cutters
can be locked during the adjustment of the knives, in order that the hands may be
protected against injury caused by an accidental movement of the knives during
the said adjustment.
A handle 9 provided at the axle f2 serves to facilitate pulling out of the
frame 6 with the cutters journalled in the same. In order to facilitate the stopping
of the machine and pulling out the frame, when desired, a loose pulley (Fig. 3)
is placed around a stud or the like in the box a alongside the aforesaid pulley g
attached to the axle f, the belt being carried over to or from the loose pulley g¹
by means of a fork embracing the belt when the machine is to be stopped.
The bottom of the box a is formed in such a manner that the shavings are
caused to follow the cutters and to move around the same a great many times, if
necessary, either between the cutters d, d¹ or between one of these and the nearest

page_text: of the fixed knives or lists until at last the shavings are cut in such small pieces
that they fall down through the outlet a into a casing or au outlet pipe.
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. Apparatus for cutting up shavings such as removed by long planes,
characterized by two or more cutting drums d, d, turning in the same direction
and arranged preferably between a pair of fixed knives or of rails m provided with
sharp or cutting edges; the knives of these drums meeting always at the same spot,
that is to say, at that point of the circle where the cutting up has to to be performed
or where the knives arrive opposite one another, while the bottom of the frame or
shell is so formed that the shavings are compelled to follow the knife drum during
their motion and to skip repeatedly about these drums partly between the latter
and partly between one drum and the adjoining fixed knife or rail until they are
finally cut into pieces of such a size as to be able to fall out of the machine through
a hole a¹ formed in the shell or frame.
12: Mechanism designed according to the above claim and characterized by slop-
ing ledges arranged in the frame or shell a and serving partly as guides for the
shavings and partly as edges co-operating with the cutting edges of the knives in
motion, so that while the shavings move at the bottom of the shaving box they
are partly carried away by the rotating knives and are partly better cut up.
3. Mechanism according to Claim 1, "characterized by the formation of holes in
the prolonged nave of the toothed wheel which connects the driving wheels h, h¹,
of the knife drums d, d, as well as in the fixed part 2 of the toothed wheel ¹,
for the purpose of inserting a bolt in these holes in order to prevent an unintended
rotation of the knife drums, while the knives are being adjusted in position.
Dated this 26th day of Januom: 1800
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents, 62, Saint Vincent Street, Glasgow,
Agents for the Applicant.