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Sept. 24, 1946.
s. c. 'HURLEY, ‘JR
Filed Oct. 2, 1944
2 ‘Sheets-Sheet l
P/vor Pam/7' 5'
634M051. GIL/0121.5)’; Je.
311W 1232mm
Sept; 24, 1946.
' s. c. HURLEY, JR
Filed on. 2, 1944
ZYSheetS-"Shee’c 2
F16. 4
SAMUEL 63 190/24 [K we.
4r TOIQ/VE rs
Patented Sept. 24, 1946
Samuel C. Hurley, Jr., Danville, Ill.
Application October ,2, 1944, Serial No. 556,811 / . ’
3 Claims. (01. 214-1)
2 V
are given to indicate the
This application‘ is a continuation in‘ part of .
various kinds of rounds that may be inspected
my; copending application 545,360, ?led July ‘17,
by my device:
19‘ 4.
This invention relates to a device for feeding,
rotating, and monitoring articles in a unit oper
10. Truncated cylinders
1. Pins
2. Tubes
and cones
3. Rivets
11. Barrel shaped
4. Tops
12- Paraboloids
-5. Bullet shaped
13. Cylinders
6. Spools
14. Spheres
15. Screws
and may vary from a number of complete revo 10 .7. Hour glass shapes
16. Threads
lutions of the round to a fraction of a revolution
9. Ellipsoids
17. Bolts
of the round during the time the round is in the
inspection zone.
The previous photoelectric inspection meth
One of the objects of my invention is to pro
' ods for determining shapes and'dimensions', etc.,
vide a novel‘ apparatus for spinning the rounds 15 of a round do not involve scanning the round by
in an inspection zone and for maintaining only
rotating, it at an inspection point and therefore
ation device and is particularly useful for the
scanning of rounds by rotating the round ina
photoelectric inspection zone. The amount of
rotation depends on the type of inspection desired
one round at a time in the inspection zone and
inaccuracies in the'finspection are unavoidable.
for removing the round inspected and placing
the next round in inspection position.
, By my method, the circumference‘of a roundmay
be inspected and therefore I have provided an
Another object of my invention isto [provide
an apparatus particularly useful in photoelectri
improved, accurate,‘ and ‘speedy method for'in
spection of rounds.
cally scanning a round at a given point. The
Another object of my invention is to provide an
particular method and apparatus. for obtaining
improved monitoring means and means for ro
the photoelectric inspection is fully described in
tating a round in the inspection zone, particular
my copending application 545,360. Thus, the 25 ly for inspecting small round objects of less than
photoelectric inspection may be accomplished \by
a quarter of an inch in diameter. While it is com
spinning the round against a stop or block; and
paratively easy to inspect large objects, it has
by suitable arrangement of a light beam anda
been found difficult to provide a suitable appa
light sensitive device, the circumference of a
ratus for inspecting small objects, particularly
round may be scanned. Some of the speci?c in 30 smallrounds having ?anges, bevels, etc. By my
spections for which my apparatus is particularly
device, I have overcome these difficulties.
useful are the following:
Another advantage .of my invention is in the
means that I provide for maintaining the round
. Diameter.
against the stop during the rotation. Itis ob
35 vious that if the roundis not rotated solidly
. Bevel.
against the stop, it may chatter or bounce against
. Curvature.
the stop and cause inaccuracies in the inspection.
. Alignment.
I prevent this by providing : the proper angleon
. Parallelism.
the rotating means as will‘be hereinafter. fully
. Internal round surfaces for eccentricity and 40
Broadly, my invention comprises means for
continuously feeding a round to an inspection
and concentricity.
zone, a monitoring means for maintaining only
9. Irregularities in surface such as flat spots,
one round at a time in the inspection zone, and
depressions, ridges. etc.
45 means for rotating the round while it is in the
8. External surface of rounds for eccentricity
10. To determine the location, shape, and'size
of different parts of segments such. as slots,
grooves, scratches, threads.
11. To determine whether apiece is'true, e. g.
whether the end of a cylinder is at right angles
with the longitudinal dimension.
12. ,Angle.
13. Major diameter, pitch diameter, angle, lead,
etc., of threads.
mean any object which has any.
inspection zone.
More speci?cally, my invention comprises in
combination an assembly comprising a rotation
means including a‘ rotatable shaft and a roller at
tached to said shaft, a feedway associated there
with, a ?rst camming means attached to said
shaft to periodically raise the rotation means to
permit the round to be ejected from theinspec
tion zone, a monitoring means associated with
, By a round, I
55 said feedway to maintain only one round at a
bearing surface which is round and by way of _
time in the inspection zone and to release the
next round to the inspection zone after the in
spection of the previous round is ?nished and
the monitoring means actuated 'by a second cam
on the rotatable shaft synchronized with the
?rst cam.
Other embodiments, advantages, objects, uses,
and applications of my invention will become
apparent'by referring to the drawings in which
removed by an air blast controlled by a solenoid
valve and correlated with the photoelectric in
spection. To accomplish this, I provide a cam 15
which acts against a roller bearing l6 as the shaft
4 rotates. In the drawing of Fig. 1, the cam is
shown in such a position that the roller is con
tacting the round lil by gravity. As the rotation
continues, the upper end of the cam [5 contacts
theroller hearing it, raising the roller l, per
Fig. 1 shows an elevation of the entire assembly; 10 mitting the round It! to be ejected from the in
Fig. 2 shows a plan view of the assembly; Fig. 3
spection zone. This is more clearly shown in
is a cross-section along lines 3——3 of Fig. .1 illusa.
Fig. 4 in which the direction of rotation of the
trating the function of the monitoring device;
cam i5 isshown by the arrow.
Fig. 4 is a cross-section along the lines 4—4 of"
In this type of unit inspection, it is necessary
Fig. 1 illustrating the function of the camming .
means for periodically raising the rotation means.
In Fig. l, I have illustrated rounds in an in
spection position which are shaped like rivets,
; that only one. round at a time be maintained in
the inspection zone and to provide means for
feeding the rounds one at a time to the inspection
zone; Furthermore, it is important to prevent
although the apparatus may be used for any
the next round to be fed to the inspection zone
shape rounds within. the scope of my invention. 20 from entering the inspection zone until the round
The inspection roller I which is mounted or
undergoinginspection has been discharged by
attached to the enlarged part 2 of.s1eeve >31is
the air blast. Referring to Fig. 1, the next round
rotated by means of the driving shaft 6 journaled
l'i', in. the inspection zone is maintained in thatv
in endplate 2-2 which is pivotally attached at
position until the round is is‘ discharged by the
pivot pointsqTheother end of the shaft at point 25 monitoring or trapping, device it; The trapping
6 is positioned in opening ‘I of the end plate 8.,
arm. l9 blocks the feedway and is, held in blocking
The roller» i may comprise or be surfaced with
or. trapping position by means of the spring 28.
a friction means such as rubber in order tov pre~
They monitoring device l3 is pivoted on bearing
vent slippage between the roller and the round.
28. The. functioning of the monitoring device is
I have illustrated as a disengaging means between L. best shown by referring to Fig. 3. A second cam
the round and the roller, a pivoted rotation means
2|. attached to the shaft 3, acts against the arm
raised by a cam- at the opposite end; the cam
23 best shown in Fig. 1 and raises the trapping
could be located, near the center with the rota
end 19, thus unblocking the feedway 9 and per
tion means slidably attached in a slot at each
mitting the round [1, which. hadbeen previously
end, however.
blocked, to enter the inspection zone- The cam
Aieedway 9, shown as a feeding tube although
Ed is rotated cloclnwise in the direction shown
any, other suitable feeding means may be used,
by thev arrow in Fig. 3. During most of one com
isprovided to feedthe rounds into the inspection
piete revolutionv of the. shaft d, the blocking arm
position. The rounds may bev fed to the inspec
iii. isin position, to trap the round i7.
tion zone through the tube by mechanical means 40 _ The synchronization between cam, 7 and cam
such as fluid pressure. However,‘ it is preferable,
21 with the inspection operation is as follows:
although not essentiaLto incline. the. entire as
Near the end of the inspection, the cam 15 acts
sembiy at an'angle of. about 45° in a direction
against. the needle bearing is and raises theshaft
from point It to point 1.- and the rounds fed along
4 about the pivot 5,, disengaging the roller from
the 'feedway by gravity.
the round 10,. permitting the round IE to be dis
'..A round; is is shownin the inspection position
charged. rl‘his occurs just before the cam 2| acts
underneaththe roller i and in the. positioning
gainstthe arm..23 which raises the trap l9. As
means .i i‘ which may. be a conventional V-block.
the cam 2i continues its rotation, it thrusts
Theround id is. rotated against the stop or block
against, the bearing 23 raising the trap i9 and
[2 ‘in .V-block ii. in order to orient the. round in
permits the. next round. #1 to enter the inspection
the photoelectricinspection zone. during the scan
zone; but almost immediatelmthe trap Hi again
ning operation. Inorder to insure. that the round
comes down in position trapping the next round
issolid'ly rotated against the. stop {2-, the roller
E8’ in the feedway 9. The cam 15. continuing
his angledslightly as. illustrated and. with this
its rotation then lowers the inspection roller l
direction .of1 angle, the direction of rotation, .is
onto the round I‘! in order to inspect the round
in the direction of the arrow $31. If the direc
H. In other words, the timing to prevent the
tion of rotation is reversed, theangleof the roller
round I‘! from entering the inspection zone be
is reversed. In other words, the roller is angled
fore round it! is discharged, thereby preventing
such as to force the round against. the stop .12.
round H1 from being discharged along with round
I have also found that with this direction of
IE3, is as follows:
rotation- of the angled roller that if‘ I angle the 60
1. Cam l5 raises the roller l permitting the
rotating shaft 4 from the normal center line in
round in inspection position to be discharged.
a transverse plane to the elevation in a direction
2.. After the round in. inspection position has
away ‘from: the‘ angle of rotation in the manner
been discharged, the cam. 2i. raises the blocking
shown in Fig. 2 illustrated by numeral ' M, the
arm l9, permitting the. next round to enter the
round is pressed against the stop“ and will not
inspection zone.
chatter or bounce during rotation. The angle
3. The cam 2| disengages itself. from the hear
M may not; be very large and usually an angle
ing 2.3, permitting the spring 26 to cause the
of ‘less than; 1'°- will be sufficient.
' :At the end of. the inspection, it is necessary to
raise ‘the roller I from the round ii) in order to
remove the round H) from the inspection zone.
After the roller is raised, the particular manner
of removing the round. H) from the inspection
zone is not material to my invention but may be 75
trapping arm I 9- to block the feedway 9.
4. The cam l5 disengages itself from the bear
ing 1 6, permitting the roller to contact the-round
in the inspection zone. Thus, by providing suit
able camming means and proper synchronization,
Iamable to- accomplish the objects of my inven
with for containing a plurality of the rounds and
In order to provide, a means for adjusting the
distance between the V-block l l and the roller l
for feeding the rounds for rotation byrthe roller,
a positioning means associated with said feed
way and said rotation means for positioning the
in order to accommodate different sized rounds
and also to adjust the round H1 in the proper
round during rotation by the roller, a ?rst cam
attached to said shaft and adapted and arranged
inspection position, I'provide an adjusting cam
24 mounted in the opening 25 in the plate 21
for periodically raising the roller, a movable trap
associated with said feed-way for feeding one
and arranged and adapted to actuate‘against the
plate 25 in such a manner that the V-block may
be raised and lowered.
In another embodiment of my invention, the
round at a time for'rotation by the roller, a second
10 cam on the shaft adapted and arranged to actu
shaft 4 instead of rotating-may be a journal bear
ing within which a rotatable shaft, 4' turns. In
this case, the cam 21 does not rotate but is at
tached to the journal bearing 4’ and moves up
and down thus actuating the monitoring de 15
vice l8.
The above description of the illustrations is
not intended to limit my invention, which is only
limited by the following claims:
I claim as my invention:
ate the'movable trap and said second cam syn
chronized with said ?rst cam to release the trap
while the roller is raised due to actuation by the
?rst cam thereby releasing one round at a time
for rotation by the roller.
3. An apparatus for rotating rounds comprising
in combination a rotatable shaft arranged and
adapted to be raised and lowered, a roller at
tached thereto, 'a feed way associatedtherewith
for feeding the rounds, at V-block associated with
said feed way and said rotation means for posi
tioning the round during rotation by the roller,
means for adjusting the distance between the
1. An apparatus of the class described compris- I
ing in combination a rotatable shaft arranged
and adapted to be raised and lowered, a roller
V-block and said rotation means, a ?rst cam at
attached thereto, a feed way associated there
tached to said shaft and adapted and arranged
with, a ?rst cam attached to, said shaft and
for periodically'raising the roller, a movable trap '
adapted and arranged for periodically raising the
associated with said feed way for feeding one
roller, a movable trap associated with said feed
round at a time for rotation by the roller, a sec
ond cam on the shaft adapted and arranged to.
way, a second cam on said shaft adapted and
arranged for actuating‘the movable trap and said
actuate the movable trap and said second cam
second cam synchronized with said ?rst cam to 3 0 synchronizedwith said ?rst cam to release the
trap while the roller is raised due to actuation
release said trap while the roller is raised.
by the ?rst cam thereby feeding a round for rota
2. An apparatus for rotating rounds compris
ing in combination a rotatable shaft arranged
tion by the roller.
and adapted to be raised and lowered, a roller
CO 5
attached thereto, a feed-way associated there
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