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Патент USA US3094426

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June 18, 1963
Filed Ray 23, 1960
3 Sheets-Sheet 1
V ,
June 18, 1963
Filed May 23, 1960
3 Sheets-Sheet 2
June 18, 1963
Filed May 25, 1960
I5 Sheets-Sheet 3
m u L L 0M
A 7- roexve y
United States Patent O?ice
Patented June 18, 1963
provide a required friction to maintain adjustment of the
plate 30.
The plate 30 constitutes the main support for the view
ing apparatus as will presently appear, and comprises a
pair of upright spaced ears 34 positioned in the medial
Paul L. Damaska, Proctor Star Rte., Williamsport, Pa.
Filed May 23, 1960, Ser. No. 31,142
3 Claims. (Cl. 88-14)
longitudinal axis of the plate and between these ears a
block 35 is pivotally mounted by means of a bolt 36, the
block being suitably secured to a cylindrical sleeve 37
preferably by countersunk screws so as to provide a
This invention relates to a wire die viewer and it con
sists in the constructions, arrangements and combinations
herein described and claimed.
It is the cardinal object of the invention to provide a 10 smooth interior surface.
simple and quick means for inspecting wire drawing dies
A rack bar 38 is secured to the top surface of the ad
for detection of any imperfections; to inspect the dies that
justable mounting plate 30 extending forwardly of the
have been polished; :to view the smoothness of the ap
housing and positioned in the medial longitudinal axis
proach angle or reduction area; to determine the amount
of the plate, ‘and in order that adjustment of the plate may
of cut in thousands to bring the bearing length to one
be attained exteriorly of the housing, a gear 39 is em
quarter the diameter of the size; as well as to View the
ployed. The pedestal 21 has a bearing 40 at the upper
back relief, if found necessary.
end thereof for rotatably supporting ‘a shaft 41, upon the
More speci?cally, it is an important object of the in
inner end of which the gear 39 is secured so located as to
vention to provide a compact means for removable sup
effect a meshed engagement between the rack and the
port of a die to be inspected having means for rotating 20 gear. The shaft 41 is of a length to extend through the
the die chuck before a magnifying lens as well 'as adjust
right hand side wall, 18' of the housing and has secured
ing the chuck with respect to the lens, as will be required
upon the end thereof an operating knob 42. By this
when viewing different sizes of dies, and also including
construction, the plate 30 and associated parts may be ad
a lighting means, the light from which is re?ected on the
justed longitudinally of the dove-tail plate 26.
interior surface of the die at such angle as to readily dis 25
In order that complete inspection of a die may be ac
close any defects in the die.
complished, the die ‘is to be rotated, and this is attained by
Additional objects, advantages and features of inven
an electric motor generally indicated at 43. The motor
tion will be apparent from the following description, con
comprises a base 44 which is preferably welded to the
sidered in conjunction with the accompanying drawings,
upper periphery ‘of the sleeve 37, as indicated at 45. The
30 motor further includes a pair of spaced’ brackets 46 ar
FIGURE 1 is a perspective view of the viewing device,
ranged parallel with the longitudinal axis of a worm gear
FIGURE 2 is a perspective view of the magnifying
47 carried by the motor shaft 48. The brackets 46 are
lens mount.
each formed with a bearing 49 arranged in aligned op
FIGURE 3 is a cross section taken on the line 3—3
posed relation for support of a shaft 50. The shaft 50
35 has keyed or otherwise secured thereto a gear 51 in mesh
of FIGURE 1.
FIGURE 4 is ‘a transverse cross section taken on the
with the worm gear 47 for rotating the shaft 50 upon
line 4-—4 of FIGURE 3.
energization of the motor. The shaft 50 is of a length to
FIGURE 5 is a vertical section taken on the line 5-5
extend beyond one of the bearings 49 and has secured
of FIGURE 4, and
thereto a pulley 52 for a purpose presently to be ex
FIGURE 6 is a perspective view illustrating the various 40
parts in a separated state.
Referring more particularly to the drawings, there is
illustrated a die viewer generally indicated by the refer
ence ‘character 10 comprising a suitable housing 11, the
The assembly of the die chuck will now be dealt with,
reference being had particularly to FIGURES 3, 5 and 6.,
The sleeve 37 mounts a bearing 53 therewithin, the hear
ing 53 having a bore 54 of ‘a diameter to rotatably ‘receive
top wall 12 of which has a wall portion 13 formed at an 45 a tubular extension 55 integrally formed with a head 56
angle to the front wall 14 and is provided with a suitable
forming a shoulder in abutting relation with the adjacent
medially positioned ?anged opening 15 for mounting of a
end of the sleeve 37. The tubular extension is of a length
to extend beyond the bearing 49 and has ?xed thereon a
frame 16 for support of a lens, and since the latter must
be replaceable to obtain proper magni?cation, the frame
pulley 57. Power is transmitted from the motor 43 to
is only frictional'ly retained in the ?anged opening of the 50 the tubular extension 55 by means of a belt 58 trained
about the pulleys 52 ‘and 57.
wall, the frame being removable by means of handles 17.
The left hand side wall 18 of the housing has an ex
With reference to FIGURE 5, it will be seen that the
teriorly mounted switch 19 and further is provided with a
die chuck 59 is detachably mounted upon the outer face
substantial opening 20 permitting access to the interior
of the head 56. . The chuck 59 has an annular recessed
seat 60 for receiving the die holder 61, the latter being
of the housing, for a purpose presently to be explained.
Within the housing 11, adjacent the front wall 14, a
pedestal 21 is suitably secured upon a base 22, which as
here shown is detachably connected within the walls con
stituting the housing. Upon and secured to the base 22
there is a support member 23 positioned in the vertical
medial axis of the housing having a rearwardly inclined
face 24 (see FIGURE 3) and as better seen in FIGURE
readily removable therefrom as will be explained.
In order to'provide illumination for inspecting a die
supported in the die chuck 59, a suitable metallic tube 62
is employed, through which the electrical wires 63 have
60 been threaded and electrically connected to ‘a socket for
support of a bulb 64.
The tube is bent into substantially
U-shaped formation, one leg 65 of which is passed
through the open end 66 of the sleeve 55. The tube 62
is preferably welded to the outer periphery of the sleeve
5, the support member 23 is formed with a pair of
threaded openings 25 for mounting of a dove-tailed plate 65 37 as indicated at 67, for support purposes, and the leg
26, by means of screws 27 complemental to the openings
25 of the support member.
The opposed jaws 28 of the dove-tail plate 26 receive
complemental side walls 29 of an adjustable plate 30, the
plate being held in adjusted positions by means of screws
31 engaged through threaded openings 32 formed in the
jaws 28 so as to impinge upon a pressure plate 33 to
65 is given an inclination, as best seen in FIGURE 5, so
that the light rays emanating from the bulb 64 will strike
the die 68 at a desirable angle for observation through
the magnifying lens 69.
The wires 63 of the lighting means and the wires 70 of
the motor are electrically connected with the switch 19
and a source of electrical power so as to 'be energized
simultaneously, althoughv if desired, separate switches may
be employed for each of the devices.
The face 24 of the mounting block 23 is formed at an
angle of. 90° and: consequently the inspectionrnechanism
supported on said block will be at the same angle, present
retracting said adjustable plate toward and away from said
view opening and a magnifying ‘lens mounted in said view
2. A device for inspecting wire drawing dies compris
ing a housing having an inclnied wall, a view opening
formed in said inclined Wall, a base member mounted
upon the bottom wall of the housing, said base member
having a face inclined upwardly in the direction of the
ing the diev chuck 59- at right angles to the. magnifying
lens. 69.
The operation of the viewer will be substantially as
view opening, a channel member ?xed to said inclined
Upon operation of the switch to the “on” position, the 10 face and slidably, supporting an adjustable plate, a cylinder
motor 43 and the light. 64 will be energized. The motor
mounted on said plate and having an interior bearing
will. rotate the sleeve 55 by means of ‘the pulleys 52, 57
member, an elongated sleeve rotatably supported in said
and belt 58 at a speed of 6 r.-p.m. and a corresponding
bearing member, said sleeve having a pulley at one end
rotation is given the die chuck. The operator now places
thereof, a die chuck on the other end of the sleeve for
the die to be. inspected in the seat 60 of ‘the chuck, access 15 support of the die and positioned in line with said view
to the chuck being obtained through the opening 20 of
opening, illuminating means within the sleeve for direct
the housing, and likewise the die may be removed from
ing rays- of light upon said die, a motor mounted on said
the chuck after inspection.
cylinder, said motor having a driven shaft, a- worm gear
If the focus between the die and the magnifying lens
?xed. to said shaft, said motor further having a shaft posi
is to be changed, ‘as will be required in viewing diiferent 20 tioned transversely of said worm gear, said. shaft having a
sized dies, this is accomplished by rotating the knob 42
gear in mesh with said worm gear, a pulley ?xed to one
in the proper direction to move the die chuck toward or
away from the ‘lens, which is effected through the rack
bar 38 and gear 39.
end of said shaft and aligned with the pulley of said elon
gated sleeve, a belt trained about said pulleys, ‘means for
advancing ‘and retract said adjustable plate toward and
As the power of the lens employed will vary according 25 away from said view opening and a magnifying lens
to the size of die being tested, the lens and frame 16 is
mounted in said view opening.
readily removed for replacement of the desired lens.
3. The structure of claimv 2, in which ‘the means for
While I have shown and described a, preferred con
advancing and retracting said adjustable plate comprises a
struction of the viewer, this is by way of illustration only,
rack bar on said plate, a pedestal within the housing and
and I consider as my own all such modi?cations in con 30 having a bearing, a shaft journ-alled in said bearing and
struction as fairly fall within the scope of vthe appended
extending exteriorly of the housing, an operating knob
I claim:
?xed to one end of the shaft, the other end of said shaft
having a gear in mesh with said rack bar.
1.. A device for inspecting wire drawing dies compris
ing a housing. having an inclined wall, a view opening 35
being formed in said inclined wall, a base member
References Cited in the ?le of this patent
mounted upon the bottom wall. ‘of the housing, said base
member having a face inclined upwardly in the. direction
of the view opening, a channel member ?xed to said in
clined face, and slidably supporting an adjustable plate, a 40
Meister ______________ __ Feb. 8, 1944
Hurley ______________ __' Dec. 30, ‘1947
Becker ______________ __ May 11, 1948
cylinder positioned on said. plate and said cylinder being
. 2,444,639
Elder ___g _____________ __ July 6, 1948
provided with an interior bearing member, an elongated
sleeve rotatab'ly supported in said ‘bearing member, a ‘die
chuck on ‘one end of the sleeve for support of the die ‘and
Luety _______________ __ July 19, 1949
Sum-merhayes et va1 _____ __ June 12, 1956
Yale _________________ __ June 4, 1957
positioned in line with. said view opening, illuminating 45
Weir ____ I. _________ __ Aug. 18, 1959
means vwithin the sleeve for directing rays of light upon
said die, motor means operatively connected to said sleeve
for rotating said sleeve and die, means for advancing and
Magni?er, Scienti?c American, October 1941, page
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