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Патент USA US2112839

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April 5, 1938-
J. A. GUNDERSEN
%
2,112,839. I
FUR CUTT ING MACHINE
Filed July 15, 1936
2 Sheets-Sheet l
lNVENTOR
614/‘
WWW
ATTORNEYS
April 5, 1938.
_j_ A_ GUNDERSEN
2,112,839
FUR CUTTING MACHINE
Filed July_l3, 1936
2 Sheets-Sheet 2
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Patented Apr. 5, 1938
2,112,839.
UNITED STATES
ATENT OFFICE
2,112,839
FUR CUTTING MACHINE
Jacob A. Gundersen, Kenmore, N. Y.
Application July 13, 1936, Serial No. 90,279
13 Claims.
This invention relates to a machine for cut
ting the edge of fur so that the skin thereof has
a notched or serrated edge and permits of sew—
ing together corresponding cut edges of adjacent
5 pieces of fur without showing the seam on the
hair side of the fur.
One of the objects of this invention is to» pro
vide a machine of simple and durable construc
tion whereby the edge of fur may be cut to form
10 a plurality of like notches therein without neces
(Cl. 164-60)
for supporting the same on a table 22 or the like,
and a plurality of upright posts 24 connected at
their lower ends with said base plate.
On the upper side of the front part of the base
plate is arranged a bench 25 on the upper side 5
of which is mounted a horizontal feed table 26
over which the fur to be cut is adapted to be
moved laterally either by hand or by an approved
form of feed mechanism. The fur to be cut is
placed on this table with its hair 21 down and
its skin 28 up and the rear edge portion of the
fur to be cut is exposed at the cutting station
or place and engaged on opposite sides of this
cutting place with two» sections 29 of a horizontal
sitating any preliminary marking of the fur skin
for this purpose and to effect such cutting expedi
tiously, conveniently and without undue labor.
Another object of this invention is to provide
15 e?icient means for the hair of the fur adjacent channel shaped guide which opens forwardly and
to the cutter so that the latter will .not sever is mounted on the rear part of said bench. At
the same while cutting notches in the skin and . the cutting station the rear edge of the table 26 ~
thereby preserve a ?nished and uniform appear
ance on the hair side of the fur when adjacent
20 pieces are sewed together.
In the accompanying drawings:—
Fig. l is a front elevation of a fur cutting ma
chine embodying a satisfactory form of these
improvements.
25
Fig. 2 is a fragmentary side elevation of the
same.
Fig. 3 is a horizontal section, taken on line 3-3,
Fig. 1.
Fig. 4 is a horizontal section, taken on line 4-4,
30 Fig. 1.
Fig. 5 is a vertical section, taken on line 5-5,
Fig. 4.
Fig. 6 is a vertical longitudinal section taken on
35
the correspondingly numbered line in Fig. 3.
Fig. 7 is a fragmentary vertical longitudinal
section, on an enlarged scale, of the means where
by the hair of the fur is de?ected and the skin
of the same is held, and showing the parts in
the position which they occupy after the hair has
40 been de?ected and before the skin is gripped.
Fig. 8 is a similar view showing the position of
the parts when the skin is gripped by the holding
means.
Fig. 9 is a rear view of two pieces of fur after
45 the same have been cut by this improved fur cut
ting machine.
Fig. 10 is a similar view showing the manner in
which these pieces of fur are sewed together.
Fig. 11 is a side elevation, on a reduced scale,
50 of a slightly modi?ed form of this invention.
The stationary main frame of the machine may
be of any suitable construction to support the
various working parts but, as shown in the draw
ings, the same preferably comprises a lower base
plate 20 provided on its underside with feet 2|
is provided with a recess 30 which is generally
of V~shaped form and the sides of this recess
are provided with a plurality of rearwardly pro
jecting teeth 3| which together form a V-shaped
comb, as shown in Fig. 3.
The edges of pieces of fur are cut by this ma
chine so as to produce on each edge a row of
alternating notches 32 and teeth 33 which have 25
a zig-zag or serrated form, the slopes 34 of the
teeth and notches being straight so as to form
sharp angles at the junction between oppositely
trending slopes and adjacent slopes of said teeth
and notches being preferably at right angles to 30
one another, as shown in Figs. 9 and 10, although =
any other suitable angle may be employed de
pending on the quality of work desired. After
the edges of two pieces of fur have been thus
cut the notches of one piece and the teeth of
another piece are interfitted or jointed and the ‘
opposing slopes of the same are connected by
stitches of sewing 35, as shown in Fig. 10.
The cutter whereby parts of the edges of the
pieces of fur are severed for producing the ser-.
rated form thereon may be variously constructed
but it is preferable to employ for this purpose
two‘ rotary circular or disk shaped blades I8, l9
which have peripheral cutting edges and which
have their planes arranged vertically and at an 40
angle relatively to each other so that parts of
these edges are closely opposed to each other.
The angular relation of these blades may be suited
to the desired angle of the slopes of the serra
tions but in the present case these blades are
arranged so that their planes form a right angle.
The opposed parts of these cutting blades are
vertically in line with the recess 30 in the fur
supporting table and mounted on a vertically mov
able carrier or carriage so that the opposed parts
2,112,839
of the blade may be moved downwardly and up
wardly through the recess 30 for severing the
ships I28 from the fur which produces the serra
tions on its edge. In the preferred construction
one of the cutting blades is arranged slightly
below or in advance of the other blade, this being
preferably accomplished by arranging the axis of
one blade slightly below the other, thereby per
mitting the nearest opposing edge portions of
10 both blades to be brought on the same vertical
line without actually engaging these blades with
each other and enabling an angular cut to be
formed in the edge of the fur skin which pro
duces a sharp corner at the base or bottom of
15 each notch and completely severs a snip from
the edge of the fur without interference between
the blades. While the blades are elevated above
the table 26 the fur is placed with its hair side
down on the table and its edge in engagement
with the guide 29 which latter serves as a gage
for properly locating the fur preparatory to cut
ting the same. After the fur has been thus posi
tioned the cutter is lowered so that the opposed
edge portions of the blade pass downwardly
through the recess 30 of the table and during
this time the two blades form two cuts at an
angle to each other in the edge of the fur skin
and remove a triangular shaped snip therefrom,
after which the cutter is again raised to its ele
30 vated position.
This operation is repeated for
producing successive notches in the edge of the
fur and ultimately imparting the serrated for
mation thereon which is required for matching
the similarly serrated edge of another fur skin
preparatory to sewing them together.
When feeding the fur transversely of the cut
ter for presenting successive parts of its edge to
the cutter the length of each step must be gaged
by the skill of the operator in order to obtain
40 uniform work, but when the feeding of the fur
is effected by automatic means the operator is
relieved of manually performing this operation.
Although various means may be employed for
driving the rotary cutter blades and moving the
45
same vertically it is preferable to employ for this
purpose the means which are shown in the draw
ings and which are constructed as follows:—
Mounted on the frame is a vertically movable
carrier or carriage which consists essentially of
a lower horizontal carrier plate 36 arranged
50
above the base plate of the frame, an upper
carrier plate 31, an intermediate carrier plate
arranged between said lower and upper plates 36,
31 and a plurality of upright bars 38 which con
nect
these carrier plates. The carrier is guided
55
in its vertical movements relative to the station
ary main frame by the upright guide posts 24 of
the frame passing through openings in the lower
plate 36 of the carrier and also through a cross
bar 39 secured to the intermediate plate 23 of
the carrier. Upward movement of the carrier
may be arrested by stops 4d on the upper ends of
the guide posts 24, which stops may be made of
resilient material, such as rubber, in. order to
cushion the carrier when the same reaches the
upper end of its stroke.
The cutter blade I8 is secured to the front
end of a horizontal shaft 4| which is journaled in
bearings 42 on the carrier plate and the cutter
blade I9 is secured to the front end of a hori
70
zontal shaft 43 which is arranged below the
65
shaft 4| and at right angles thereto and jour
naled in bearings 44 on said carrier plate. The
two cutter blades are caused to turn in unison by
intermeshing spiral gear wheels 45, 46' secured
respectively to the cutter shafts, as best shown
in Fig. 6. Rotation of the cutters so that their
opposing parts move downwardly may be effected
by a motor 41, preferably of the electric type,
mounted on the carrier plate 3'! and a belt 48
passing around a driving pulley 49 on the shaft
5|] of this motor, and a driven pulley 5| on the
shaft 4| of the cutter blade I8, as best shown
in Fig. 2. Vertical reciprocation of the carrier
may be accomplished in a variety of ways, for
example, this may be done automatically by
utilizing the power of the motor 41 in which case
motion is transmitted to the carrier for raising
and lowering the same by a crank shaft 52 jour
naled in bearings 53 on the carriage plate 36 and 15
provided at one end with a wheel 54 having a
crank 55, a pitman or connecting rod 56 pivotally
connected at one end with the crank 55 and at
its opposite end ‘with the base of the frame, and
a worm pinion 57 mounted on the cutter shaft 20
4| and meshing with a worm wheel 58 on. the
crank shaft 52, as shown in Figs. 2, 3 and 6. As
the crank wheel is rotated by the motor the car
rier is raised and lowered by the pitman 56,
thereby moving the rotating cutter blades past
the station where the snips are successively cut
from the edge of the fur.
Means are provided for holding the fur in
place while cutting the snips therefrom. In
their preferred form these fur holding and hair 30
de?ecting means are constructed as follows-:
The numeral 59 represents a clamping jaw of
V~shaped form which moves toward and from
the top of the table 29 at the edge of the corre
spondingly shaped recess 39 for the purpose of
either gripping the adjacent part of the fur
between the table and this jaw preparatory to
cutting a snip therefrom or releasing the same
‘after this cutting operation.
The underside of
this jaw is preferably toothed, scored or ser 40
rated, as shown at 60 so that it will hold the fur
more effectively. This jaw is mounted on the
lower end of upright shifting rods 6| which are
guided on the carrier so that the latter is capable
of sliding thereon, this being preferably accom
plished by passing the intermediate part of these
rods through guide openings in the front end
of the carrier plate 23 and the upper parts there
of through guide openings formed on a cross
bar 62 which is supported by posts 63 on this
plate, as ‘best shown in Fig. 1. These jaws for
holding the fur on the table are yieldingly held
in a lowered position relative to the carrier by
springs 64, each of which surrounds one of the
shifting rods 6| and bears with its upper end
against the underside of the carrier bar 62 while
its lower end bears against a stop pin 65 on the
respective shifting rod and the downward move
ment of the latter relative to the carrier is lim
ited by engagement of the stop pin 65 with the 69
upper side of the carrier plate 23.
During the ?rst part of the downward move
ment of the carrier, and before the cutter blades
engage the fur, the clamping jaw 59 engages the
fur and holds the same down on the table so
that the same will not become displaced when
the cutter during the subsequent part of the
downward movement of the carrier severs the
snip I29 from the fur, as shown in. Fig. 6, and
forms a notch in the edge thereof. After the
clamping jaw engages the fur the carrier moves
downwardly independently of the clamping jaw
59 while the latter is at rest and holding the fur
and during such movement the springs 64 are
compressed between the upper carriage bar .62 75
2,112,839
and the stop pins 65. During the ?rst part of
the subsequent upward movement of the carrier
the same moves independently of the clamping
jaw 59 and the latter remains at rest on the fur
until the carrier plate engages the underside of
the stop pins 65 and then lifts this clamping
jaw from the fur for releasing the same and
permitting another part of its edge to be pre
sented to the cutting station.
Means are provided for brushing aside the
10
hair on the skin adjacent to the snips which are
to be removed therefrom and thus avoiding cut
ting off the hair on the body of the skin next to
such snips. The preferred means for this pur
15 pose are constructed as follows:—
The numeral 66 represents a hair de?ector hav
ing preferably the form of an upright pin which
is movable horizontally relative to the feed table,
and adapted to pass with its upper end forwardly
and backwardly underneath that part of the edge
of the fur which overhangs the recess 30 in the
table. The forward and backward movement of
this de?ector pin is effected by means which in
clude a horizontally sliding plate 6'? guided on
25 the base plate of the frame and carrying the
de?ector pin on its front end, an upright cam
arm 68 mounted on the rear end of the de?ector
slide and having an inclined cam face 69 which
is adapted to engage a bearing face 10 on the
30 lower plate 36 of the carrier for moving the de
?ector slide forwardly, and a spring 'll connect
ing the rear end of the de?ector slide with the
main frame and operating to move the- de?ector
slide backwardly after the clamping jaw 59 has
.been engaged with the fur on the table during the
3
wardly the hair on the snip of fur which is to
be cut and also de?ects forwardly the hair on
the body of the skin immediately in front of the
line on which the snip will be cut from the fur
body, as shown in Fig. 8. The snip retaining
jaw 12 then descends and hold the snip portion
of the fur against the upper end of the de?ector
pin so that the fur will be reliably held against
displacement while the cutting blades immedi
ately thereafter sever the snip from the body of 10
the piece of fur. During the ?rst part of the de
scent of the carrier the snip holding jaw moves
with the carrier but after this jaw engages the
snip over the de?ector pin then this jaw remains
at rest and the carrier completes its downward 15
movement independently of the snip holding jaw.
As the carrier rises after the cutting operation
the snip holding jaw is ?rst lifted by engage
ment of the carrier plate 23 with the underside
of the stop pin 15, then the de?ector pin 66 is
retracted rearwardly by the spring "H and then
the fur body holder is lifted by the carrier, there
by releasing the fur body and snip and permitting
the former to advance to the next following cut
ting position and the snip to drop as waste into 25
any suitable receptacle which may be provided for
this purpose.
If desired the carrier may be operated by man
power in the manner shown in Fig. 11 in which
case the carrier is yieldingly held in an elevated
position by a spring 16 interposed between the
base plate 26 of the frame and the lower plate
36 of the carrier, and depression of the latter
is effected by a foot lever or pedal arm ‘ll piv
oted on the ?oor and connected by an operating
descent of the carrier. The bearing face 70 of
rod '13 with the carrier.
the carrier engages with the incline B9 of the
By the use of this machine fur may be expe
ditiously cut to form a uniformly serrated edge
thereon without requiring any preliminary mark
cam arm and moves the de?ector pin so that its
upper end brushes forwardly the hair on the
underside of that part of the skin which over»
hangs the recess 30, together with the hair on
that part of the skin immediately in front of
the lines on which the fur will be severed by the
cutter blades, thereby preventing the blades from
45 cutting the hair on the body of the skin adjacent
to the cutting lines between the body and snip
which otherwise might detract from the ?nished
appearance of the joint between two pieces of fur
when sewed together.
While the de?ector pin is underneath the part of
the fur which is intended to be cut out in the form
of a snip the latter is held downwardly against
the upper end of the de?ecting pin by a retain
ing or clamping jaw 72 which is movable verti
55 cally toward and from the recess 35 in the feed
table. For this purpose this retaining jaw 12
is mounted on the lower end of a shifting rod 13
which slides in openings in the frame plate 23
and frame bar 62 and the same is yieldingly held
in a depressed position relative to the carrier by
a spring ‘M surrounding this shifting rod and
bearing at its upper end against the underside
of the carrier cross bar 62 and at its lower end
against a stop pin 15 on this shifting rod, the
65 downward movement of said rod on the carrier
being limited by the stop pin ‘i5 engaging with
the upper side of the carrier plate 23.
While placing the fur on the table in position
to be cut, the fur body clamping jaw 59 and
70 the snip retaining jaw 12 are both raised, and
the de?ector pin 66 is retracted into its rear
ward position, as shown in Fig. 7. Then the body
clamping jaw 59 descends and holds the fur body
against the table and immediately thereafter the
75 de?ector pin moves forwardly and de?ects for
ing on the fur for this purpose as has been the 40
case heretofore, thereby effecting a substantial
saving in the cost of doing work of this character
and also materially improving the quality of the
?nished product.
I claim as my invention:—
45
1. A fur cutting machine comprising a support
for the fur to be cut, a cutter for forming notches
in the edge of the fur skin and having two blades
which are arranged one in advance of the other
and at an angle relative to each other, and means 50
whereby relative movement of said cutter and
support is effected.
2. A fur cutting machine comprising a rela
tively stationary support adapted to sustain the
fur to be cut, a cutter for forming notches in the 55
edge of the fur skin and having two disk blades
arranged at an angle relative to each other, and
means for moving said cutter blades bodily rela
tive to said fur support.
3. A fur cutting machine comprising a rela 60
tively stationary support adapted to sustain the
fur to be cut, a cutter for forming notches in
the edge of the fur skin and having two disk
blades arranged at an angle relative to each other,
means for moving said cutter blades bodily rela 65
tive to said fur support, and means for turning
said blades with their opposing edge portions to
ward said support.
4. A fur cutting machine comprising a support
for the fur to be cut, a cutter for notching the 70
edge of the fur skin and having two disks ar
ranged at an angle relative to each other and
having some parts of their edges arranged adja
cent to one another and other parts arranged one
below the other, and means for rotating said 75
4
2,112,839
blades including two shafts arranged one above
the other and at an angle relatively to each other
said carrier and a belt passing around a pulley
on the motor shaft and a pulley turning with
and each shaft carrying one of said blades.
5. A fur cutting machine comprising a support
for the fur to be cut, a cutter for notching the
edge of the fur skin and having two disks ar
ranged at an angle relative to each other and
one of said cutter blades, and means for raising
and lowering said carrier including a crank con
having some parts of their edges arranged adja-v
cent to one another and other parts arranged one
10 below the other, and means for rotating said
blades including two shafts arranged one above
the other and at an angle relatively to each other
and each shaft carrying one of said blades, inter
-meshing spiral gears arranged respectively on
15 said shafts, and driving means connected with one
of said shafts.
6. A fur cutting machine comprising a sup
port for the fur to be cut, a cutter for notching'
‘ the edge of the fur skin and having two disks
20 arranged at an angle relative to each other and
having some parts of their edges arranged ad
jacent to one another and other parts arranged
one below the other, and means for rotating
said blades including two shafts arranged one
25 above the other and at an angle relatively to
each other and each shaft carrying one of said
blades, intermeshing spiral gears arranged re
spectively on said shafts, a vertically movable
carrier provided with bearings in which said
30. shafts are journaled, and means for rotating
said blades including a motor mounted on said
carrier, and a belt passing around pulleys ar
ranged respectively on one of said blade shafts
and the driving shaft of said motor.
'7. A fur cutting machine comprising a sup
35.
port for the fur to be cut, a cutter for notch
ing the edge of the fur skin and having two
disks arranged at an angle relative to each other
and having some parts of their edges arranged
40 adjacent to one another and other parts ar
ranged one below the other, and means for ro
tating said blades including two shafts arranged
one above the other and at an angle relatively
to each other and each shaft carrying one of
said blades, intermeshing spiral gears arranged
respectively on said shafts, and means for ro
tating the blades of said cutter including a
motor-mounted on said carrier and a belt pass
ing around a pulley on the motor shaft and a
50 pulley turning with one of said cutter blades.
8. A. fur cutting machine comprising a sup
port for the fur to be cut, a cutter for notching
the edge of the fur skin and having two disks
arranged at an angle relative to each other and
having some parts of their edges arranged ad
jacent to one another and other parts arranged
one below the other, and means for rotating said
blades including two shafts arranged one above
the other and at an angle relatively to each
60 other and each shaft carrying one of said blades,
intermeshing spiral gears arranged respectively
on said shafts, means for rotating the blades
of said cutter including a motor mounted on
nected by gearingwith one of said cutter blade
shafts, and a pitman connecting said crank with
said frame.
9. A fur cutting machine comprising a sup
port for the fur to be cut, a movable cutter for
notching the edge of the fur skin, and movable 10
means for de?ecting the hair backwardly on that
part of the skin which is to be out, said means
being movable at right angles to the direction
of movement of said cutter.
10. A fur cutting machine comprising a sup 15
port for the fur to be cut, a cutter for notching
the edge of the fur skin, movable means for de
fleeting the hair backwardly on that part of
the skin which is to be cut, a movable carrier
upon which said cutter is mounted, and shift 20
ing means for actuating said de?ecting means
by motion derived from said carrier, said shift
ing means being movable at right angles to the
direction of movement of said cutter.
11. A fur cutting machine comprising a sup
port for the fur to be cut, a vertically movable
cutter for severing the skin of the fur, a verti
cally movable carrier upon which said cutter is
mounted, a horizontally movable de?ecting pin
adapted to engage with the hair of the fur and 303
de?ect the same backwardly adjacent to the
part of the skin which is to be severed, and
means for actuating said de?ecting pin includ
ing a slide carrying said pin, a cam arranged
on said slide and having an inclined face adapt- .
ed to be engaged by a part of said carrier for
moving said slide in the direction for engaging
the hair of the fur.
12. A fur cutting machine comprising a sup
port for the fur to be cut, a vertically movable 40
cutter for severing the skin of the fur, a verti
cally movable carrier upon which said cutter
is mounted, a horizontally movable de?ecting
pin adapted to engage with the hair of the fur
and de?ect the same backwardly adjacent to
the part of the skin which is to be severed, and
a clamping jaw adapted to bear against the fur
opposite the de?ecting pin.
13. A fur cutting machine comprising a sup
port for the fur to be out, a vertically movable
cutter‘ for severing the skin of the fur, a verti
cally movable carrier upon which said cutter is
mounted, a horizontally movable de?ecting pin
adapted to engage with the hair of the fur and
de?ect the same backwardly adjacent to the
part of the skin which is to be severed, a clamp
ing jaw adapted to bear against the fur opposite‘
the de?ecting pin, and means for yieldingly
mounting said clamping jaw on said carrier and
moving the same toward and from said de?ect
ing pin.
JACOB A. GUNDERSEN.
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