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Патент USA US2114994

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April 26, 1938.
Filed OCÍ. 19, 1936
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April 26, 1938.
Filed Qot. 19, 1936
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Patented Apr. 26, 1938
Arthur J. Brickner, Muskegon Heights, Mich., as
signor to Brîckner-Kropf Machine Company, '
Muskegon Heights, Mich., a corporation of
Application October` 19, 1936', Serial No. 106,400
4 Claims. (Cl. 29-76)
lI’his invention relates to a filing machine
which is particularly useful for the purpose of>
filing and lapping die punches though of course
it may be used for filing other work. However,
5 in the process of making punches for dies', after
the same have been roughed out to approximate
size it has been considered heretofore necessary
to do the final finishing and honing operations
upon the punch by hand, this adding to the
cost of the punches'and in fact being a large
item in the cost. In accordance with my inven
tion a very practical and useful filing machine
is provided, particularly adapted for the purpose
stated and' in which the ñle is held at its upper
15 end above the work to be ñled, the lower por
tion of the iile is free of any connection and
mayl operate upon a die punch directly downward
to a shoulder at the lower end of the die punch,V
which is substantially if not entirely a universal.
2U element or part of die punches. The machine is
further equipped with means for angular adjust
ment whereby the ñle or the work may be ad
justed at an angleY to the perpendicular so that
the die punch operated upon by the ñle may
25 be filed at an angle either from its. upper end>
downwardly and outwardly or from. itsV upper end
downwardly and inwardly. There. is also pro
vided a means for adjusting the file holding part>
of the machine in a vertical> direction so that
30 files of different lengths may be used in the
Like reference characters refer to like parts
in thediiïerent figures of the drawings.
The machine includes a supporting pedestal l
having a head 2 at its upper end above which
is a generally horizontal table 3 which has down
wardly extending ears 4 between two oi its op
posite edges, a pivot rod 5 passing through the
ears and through suitable lugs on the head2
of the pedestal whereby the table may` have a
limited angular adjustment about the axis cf 10i
the rod 5. An ear or lug 6 extends downwardly
near one of the sides of the table 3 and is ver
tically slotted, through which passes a set screw
'I threading into the head'V 2 of the pedestal to>
secure the table 3 in any position to which it
may be adjusted. It is evident that adjdstmentv
may be made within the limits prescribed for
the length of the slot in the ear or lug 6. -
At the rear side of the head 2> an arm 8, inte-
grally formed therewith, extends rearwardly' and 20
upwardly and terminates in a; split sleeve 9 hav
ing upper and lower ears 9a; at its rear side above
and below the parting in the sleeve and which
may be drawn together by a screw l0 toY clamp
the sleeve upon a cylindrical boss H which ex
tends laterally at the lower end of a substanf
tially vertical arm I2 of a support for the ñling
head. At the upper end of the arm> I2 'a hori-y
zontal arm i3 extends forwardly so as to lie
over the table 3, terminating in a head I4.
The head I4 at its front side is machined to
provide a recess for the reception of two» spaced
very readily quickly and accurately adjusted to v apart vertical gibs I5> and i5 which areV fastened
to the head I4' at its front'sid'e by means of
any desired length.
suitable machine screws. The gib I6 at one side
An understanding ofthe invention for the at
tainment of the advantages and objects stated, is adjustable inwardly slight distances by means
machine and also those of different types and
characters; and the stroke of the file may be
as well as many others not enumerated may be
had from the following description, taken in
connection with the accompanying drawings, in
40 which,
Fig. 1 is a perspective view of a fili-ng machine
embodying my invention.
Fig. 4 is a fragmentary plan view with. some
parts shown in horizontal section for better dis
closure, and
of compensating for and taking up wear which
occurs when the vertically moving slide- I8 40
mounted between theI gibs I5 and i6 in. the course
of time wears at its vertical edges and also wears
Fig. 2 is an enlarged front elevation» of the
upper part of the machine.
Fig. 3 is a side elevation, partly inY section, on
a plane at right angles to the elevation. shown
in Fig. 2.
of adjusting screws Il threading through the
adjacent side of the head I4. this for the purpose
Fig. 5 is a fragmentary' view illustrating a
feature of the construction for the angularly
adjustable mounting of the support for the filing
55 head.
the gibs thereby making it desirable that the
wear be thus compensated.
The slide i8 hasl 45
a plate I9 at its front side permanently secured
so asV tov be in effect integral therewith. The
slide unit at the lower end has forwardly ex
tending jaws 20 which may be clamped by means
of, a clamping screw '2l against' the shank of al
ñle 22, the ñle extending downwardly toward the
An electric motor 23 is supported onV a‘suit
able bracket or shelf at the; rear side ofthe
pedestal I and has a‘driveA pulleyllllon its shaft;
which, through an endless belt 25, drives a driven
pulley 26 secured to a shaft 21 mounted for ro
tation in suitable anti-friction bearings in and
extending through the cylindrical member I I.
At its opposite end the shaft 21 is equipped with
a cylindrical head 28 which has a T-slot 29 in
its outer face passing diametrically across the
On a suitable pivot 30, at the upper end of
perpendicular may be attained. It is further evi
dent that the holder for the upper end of the ñle
shown in Fig. 4 is one which can take the shank
of the ñle whether of the cross section shown in
Fig. 4 or any other conventional cross sectional
shape used for the Shanks of ñles.
The machine described has proved very prac
tical and' useful', eliminating as it doesv a very
great deal of the-hand filing which has hereto
10 the arm I2, a bell crank lever is mounted for fore been considered necessary in machining die 10
rocking movements, having a downwardly ex- f"punches to substantially accurate finished sizes.
The invention is defined in the appended claims
tending arm 3| and a forwardly extending arm.
and is to be considered comprehensive of all
32 as best shown in Fig. 3. The arm 3| at its
lower end is equipped with an open framel 33. forms of structure -coming within their scope.
I claim:
15 A bolt 34, having a head 35 located in the T-slot
1. In a machine of the class described, a sup
29 (Fig. 2), passes through a block 36 which is
located in the frame 33 and slidable between its
vertical sides. A clamping' nut 31, to clamp
against the frame 33, is threaded onto the outer
20 end of the bolt 34. By means of this construc
tion there is an adjustment of the bell crank lever
relative to the rotative axis of the head 24 where
by the arc of movement of the bell crank lever
may be varied, being increased the farther the
25 bolt 34 is moved away from the axis of rotation of
the shaft 21 and the head 28 thereon.
The forwardly extending arm 32 of the bell
crank lever is forked atits front end and carries
a pin 39 which extends through a horizontal
30 slot in the rear side of a block or member 38 to
ñxed onto the end of the shaft, an eccentric
pin on the head, an L-shaped crank medially
pivoted on the said support, one end of the crank
being slotted to receive the said eccentric pin to
cause oscillation of the said L-shaped crank, the
other arm of the L-shaped crank having an 'ex
tension thereon and means cooperatively asso
ciated with the extension and the said plate to
cause reciprocation of the said plate.
2. A filing machine of the class described hav-`
ing a pedestal, a horizontal table, means for
A, screw 4I passes through a clamping block
member ’42 being of less length than the slot 40,
' so that by loosening the screw 4I theslide with
f the attached ñle may be verticaly adjusted to any
mountingl the table for tiltingmo-vement relative
ly to the pedestal, a horizontal supporting sleeve,
means for mounting the` supporting sleeve- at
right angles to the axis of the means about which
ciprocatory movements, the length of the ystroke
being governed by the position in which the
the table is tiltable, an L-shaped support includ
ing a boss, near one end of said support, oscil
latable in said sleeve and having its otherend
extending above the table, a sliding mechanismn
frame 33 is held relative to- the head 28, the
position of the file relative to the table 3 being
slidably mounted upon said arm for movement
toward and away from the said table, means for
f desired position.
It is evident that , with the
motor 23 operating the file is given vertical re
governed by the adjustable connection ofthe
adjustablyV clamping the said boss in said sup
slide I8 to the member 38, and the angular posi
Vtion of the ñle relative to the perpendicular being
governed by the adjustment of the member I2
and the cylindrical boss II at its lower end in
the clamping sleeve 9. The position of the work
relative to the vertical, the work being _carried on
porting sleeve to adjust the angularity of the ~
the table 3, is governed by the angular'adjust
shaft extending through the hollow portion of the .
boss, means for driving the stub shaft, a head Y
which, at its front side, the slide I8 with the
attached plate I9 is adjustably secured. 'I‘he
slide I8 and plate I9 are vertically slotted as at
35 42 and threads into the member 38, the clamping
porting pedestal, a split sleeve fixed thereon, a
support having a hollow cylindrical boss rotat
ably mounted in said split sleeve, means for
clamping the said boss in its chosen position, a 20
plate slidably mounted upon said support, a stub
sliding mechanism relatively to the table, a shaft,
means for supporting 'the shaft for rotation,
means for rotating Vsaid shaft, aheady located on
said shaft, a crank pin in said head, a bell crank
lever pivoted on said support at its medial portion ~ ‘
and in alinement therewith and having one arm
ment which the table may have relative to a
engageable'with the said crank pin whereby the
horizontal plane, Vwhichadjustment is governed
bell crank is oscillated and means located be
by the slotted lug 6 and the clamping screw 1
tween the other arm of the bell lcrank and the
associated therewith.
In Fig. 2 a die punch 43 is shown located upon
the table 3 upon a supporting block 44 and with
the punch at its lower end having a horizontal
shoulder 45 between the major portion or body
of the punch and the lower end portion thereof.
In case the punch is not thus enlarged at its
lower end so as to make the shoulder 45, there
will be the same condition present in effect in
65 that there will be a horizontal shoulder between
the lower end of the punch and the block 44 on
which it rests. The file, being held at its upper
end and depending below the head supporting’it,
may be used to file the punch 43 to the shoulder
70 at 45. By the adjustment described for the table
3 and they adjustment of the supporting bracket
consisting of the parts I2 and I3 about the hori
zontal axis of the shaft 21, substantially any de
sired angles that may be necessary fome file
75 and of the Work in both directions from a true
sliding means whereby the sliding means is re
3. In a mechanism of the class described, a
pedestal, a head mounted thereon, means ex
tending laterally from the pedestal, a supporting
bracket having a boss pivotally mounted in said
lateral extending means, means for locking the
bracket against movement, Va shaft, means for
mounting the Shaft upon the bracket and pro
viding for its rotative movement and with its axis 65
coincident with the axis about which the bracket
may be moved,~ a motor, means for mounting
the motor upon the pedestal, means for inter
connecting the motor and the shaft whereby the
shaft is driven, sliding means mounted upon the 7,0.
bracket, clamping means attached to the-said
sliding means, means mounted rupon the Ybracket
and interposed between the sliding means and
the rotatable rshaft for reciprocating the said
sliding means and its clamping means, said, in- 7,5"
2,1 14,994
terposed means comprising a bell crank lever piv
oted upon the said supporting bracket, one end
of the lever having a pin extending therefrom,
the slide having a slotted member, which slot
receives the said pin, the other end of the bell
crank lever likewise being slotted and eccentric
additional means for clamping the said boss in
its chosen position, a plate slidably mounted upon
said support, a stub shaft extending through the
hollow portion of the boss, means for driving the
stub shaft, a head fixed onto the head of the
means movable with the said shaft and receivable
in said slot to actuate said bell crank lever.
4. In a machine of the class described, a sup
L-shaped crank medially pivoted on said sup
port, one end of the crank being slotted to receive
said pin to cause oscillation of said l.,-shaped
crank, the other arm of said crank having an 10
10 porting pedestal, mounting means ñxed thereon,
an L-shaped support having a hollow cylindrical
boss rotatably mounted in said mounting means,
shaft, an eccentric pin on the head and an
extension thereon.
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