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Патент USA US2404369

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July 23, 1946.
y
`2,404,369
H. c. FOSTER
INDEXING 'MECHANISM
' ' s sheets-sheet' 1
Filed July 14, 1944
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' -
INVEN‘TOR
HarfJÜar/f F05 fer' _
“Y Mmm
_m
.
July 23, 1946.-
H. c. FOSTER
2,404,369 _
` 4
INnExI'NG MEcHANIsM
3 Sheets-Sheet 2
„Filed July 14, 1944
' INVENToR.
Harry Clark. Foster y
BY
`
ATTUKN Y y
H. c. FOSTER
'INDEXING MEQHANISM
`
2,404,369
3 Sheets-Sheet 5 l
Filed „my~ 14, 1944
ArroRN Y l
Patented July 23, 1946 »
` 2,404,369
UNITED STATES n PATENT OFFICE
2,404,369 `
INDEXING MECHANISM
Harry Clark Foster, Alton, Ill., assîgnor to 0lin
Industries, Inc., a corporation of Delaware
Application July 14, 1944, Serial No. 544,983
10 Claims. (Cl. 10G-70)
2
1
This invention relates to indexing mechanisms
in general and more particularly to an improved
work positioning mechanism.
An object of this invention is to' provide iin--V
proved means for moving objects to predeter
mined positions with a high degree of precision.
Another object of this invention is to provide
relatively simple, sturdy and inexpensive work
member .5, resilient member or spring 6, and abut
ment or stop 3. The position of the thrust block
4 in the channels 1 may be adjusted .by means
of adjustmentscrew 9. The spring pilot I0 for
guiding the spring 6 may be attached to the
abutment or stop 3 and the position of the stop
3 in the channel may likewise be adjusted by
means of adjustment screw I I.
\
Y
In Figure 2, the cam I is shown ready. for in
positioning means in such mechanisms as punch
presses, drill presses, draw presses, ammunition 10 sertion between adjacent rollers. In Figure 3
the cam has been inserted between the adjacent
loading machines, and the like.
rollers, thus forcing the thrust block 4 and chan
Other objects and advantages will become ap
parent from the descriptions and accompanying
drawings, in which,
Figure 1 is a plan view and Figures 2, 3 and 4
nel 1 forward, to the left, the diameter of one
roller. Upon insertion of the cam between the
are side views partly in section, illustrating a cam
and series of rollers in accordance with one em
moved forward the diameter of one roller and
bodiment of this invention,
rollers, the thrust block I4 is, as stated above,
the space in the channel previously occupied by
the resilient member 6 is taken up by the cam
I, so that the abutting member 5 is tightly in
Figure 5 is a side elevational view of a press
illustrating one embodiment of this-invention, 20 contact with `the stop 3 and neither the cam
nor the series ofjrollers is free to move either
Figure 6 is a sectional view of a work carrying
forward or backward, during' the time that the
member and series of rollers taken at section 6-6
parallel vsurface or dwell 65 of the cam I is in
of Figure 5 illustrating one embodiment of the
„ contact with the adjacent roller. It is 'during
invention, and
Figure 7 is a detailed plan view of the press 25 this dwell while the work is locked in position,
that the tools act upon the work. The work car
partly in section taken at section 'I-‘I of Fig
rying member, which is drivingly connected either
ure 5.
,
to the cam or series of rollers may thus be held
In accordance with this invention the above
rigidly in position while a working operation is
objects are accomplished by the provision of a
novel work positioning mechanism having a se 30 occurring. -In Figure 4, the cam I has been re
moved from between the rollers 2, and the resil
ries of rollers with precise diameters and a cam
ient member 6 with abutting member I5 has
for insertion between adjacent rollers, which cam
pushed the next roller up for action by cam sur
effects a change in the relative positions of the
face `lill, upon the next insertion of the cam I.
series of rollers and the cam. The series of roll
It lwill thus be apparent that upon repeated 1n
ers and cam are so mounted that a work carry 35
sertions of the cam, the thrust block 4 will be
ing member is moved forward an accurately de- \
moved forward stepwise the diameter of one or
termined distance simultaneously with the
more rollers, depending upon the width, and sur- '
change effected in the relative positions of the
cam and series of rollers. The cam and rollers
sition
face 64,
lover
of the
the abutting
cam I, until
member
the cam
5, whereupon
is in a it
may be so mounted that the work carrying mem
is necessary to again start the indexing with the
ber is automatically rigidly held or locked in po
cam above the ñrst roller adjacent the stop 4.
sition during a working operation and likewise so
It should likewise be understood that the series
that no working operation can occur until the
of' rollers 2 may .be as long as is necessary or de
work and the work carrying member are in the
proper operating position, which is of great ad 45 sired for the particular purpose employed, the
number of work positions depending upon the
vantage in precision work.
number of rollers and number of rollers indexed
Referring to the drawings, in Figures l, 2 and
3, a cam I with cam surface 64 and dwell 65 isA
with each cam insertion.
movably mounted for insertion between adjacent
In Figures 5, 6, and 7 is shown a press, for
instance for loading ammunition or the like, illus
tating one embodiment of applicant’s invention.
A work carrying member or slide I2 is supported
rollers in the series of rollers 2. The series of
rollers are positioned for lateral movement only
by means such as the channels illustrated at l.
One end of the series of rollers is positively held
by slide support I3A and‘has rigidly connected to
against the stop or thrust block 4, the other end
it on each side channels 1, which channels ‘I in
of the series of rollers being held by thel abutting
turn carry series of rollers 2. The work may be
.
YIi
4
.
positioned and held on work carrying member
Yor slide I2 by any suitable means. For instance,`
in loading primers, the workcarrying member I2
may hold a removable plate which is drilled to
provide cavities for holding the primer cases'in 5
rows separated a distance exactly equal to the
diameter of the rollers l2. The slide support I3 '
is mounted on press frame I4. Y
The ram I5Y which _carries theworking tools, as
moved to the left, engages latch control member
4! turning it to the left, so that downward move
ment of latch bar 33 will be prevented by surface
42 and the press will be kept out of operation by
action of clutch cam 28 on clutch key 29.
In the operation oi the press, in running posi
tion, as illustrated in Figure 5,-latch bar 33 rests
in recess 43 and latch 35 is held in notch 31 by
spring et. As the ram I5 is moved up and down,
well as the cams I', is driven by means of Va drive 10 cams I are likewise moved up and down and,
shaft It _through the action of a connecting rod
i9, and crank pin I'I.V Successive rows of the
primers are'thus moved directly under the tools
upon each insertion of the cams I between ad
upon each insertionbetween successive rolls 2,
drive or move the work Ycarrying member for
ward one roll diameter upon each insertion.
Y l While the cam I is inserted with its parallel `faces
jacent rollers »2, The drive shaft I'G' is inturn 15 between the rolls 2, the work carrying member
driven by an electric motor, or‘other suitable
i2 is held rigidly in position and the tools carried
by ram I_Fi operate-on the work carried by member
I2. When the work carrying member and chan»
rod I9 is drivingly connectedV to the »ram Itl
nels have moved forward to the point where
through the toggle links 2.9 and 2|, toggle link 20 20 channel end plate 49 engages release rod 36,'the
turning. aboutv pivot v22 andtoggle link 2| turning;
latch 35 is pushed yout of notch 3l, thus unlatch
about pivotY 24 .on the, ram I5; AThetoggle links;
ing bar 33 which is pulled' up; by spring 39. so, that
clutch cam «28 engages. clutch key 29 to stop the
291 and 2l . are movingly connected-at knuckle pin
25.' The ,position of pivot 22 maybe adjusted by..
press. Simultaneously, spring 46 effects a clock
means 'of the adjusting member23; Y, Connecting ., 25 wise-movement of' control member 4 I‘, so that stop
rod it. is.A connected to toggle “link‘29f by. means of
Vlug 4.13 rests against latch bar?33. with surface 42 '
wristpin'ZS.
"
f,
v‘
j
,
‘
,
below bar l331 toprevent the press fromfrestarting,
Y VStarting lever 2l, having clutch `cam 23,.i's mov
or from being started by manual. depression of
ably attached tov frame VIII by means of starting
the lever 2:1.
Y
'
lever .pivot 312. The starting lever 2~1'is resiliently 30
Work carrying member. I2 may then fbe pulled'
held at one endïby clutchflever springy 30, which
backwards manually or otherwise, for 'instance
isattached atY the other end to spring bracket 3iy
by means of channel' end plates 49', to- the> limit
on frame` Iii'. Clutch cam- Y28î istdesiglned to .engage
permitted by slide positioning bar 468.. During
with >clutch key 29 to throw the ‘press ont oi` op
4this operation, set screw 5I effects4 accu-riter
eration. " Latchbar- 33-is‘con-nectedr atY its upper 35 clockwisc movement ofcontrol member 4I so that
endîto starting .lever 2lb-y means` of1V pin 34».
, recess 43 is on the opposite» side of'y bar 33' andl
Latch 35, which. isfvoperatedí by- -release’rod 36, Iis
surface ¿l2 is underA bar 33 'to/prevent the press
power,V through the action of clutch p__late I-Bwith
clutch key 29. The other end of the connecting
designed. toi/fit innotchiÍS-'I _in the. latch> bar 33E,
from being started. In this ,-position, the unload
whileÍ the press is in`V operation.A The .latch 35»
ing _and loading of'wor-k» on the carrying member
turns about' latch pivot -39 on latch bracket 38' 40! I2 can `be readily accomplished. ' Y
'Y
'
(Figure l'71). - Latch-bracket
likewise servesv as a
Atte-r the new Íwork hasbeen positioned von Y
guide'- fo-r `latch bar33.
Latchlsipring'- l49, con»
member I2», it isïthen .placed in starting position
nected at one end to latch -35 and at the other- to É
by pushing forward, tothe limit permitted by' pin
mileage, rod guide» 5t,v tends ' to» manitain _latch
__ _ 55, the slide position bar 48, which‘iin
acts'V
resiliently in contactwith- ‘latch- bar I33".
' » » »- 4‘5~ on the Vend plates 49 of- thev channelsA to- move
V‘Latch control member» 4I» havingsurface -421
member I2’ and set screw 5I forward, thus‘p'er- -.
w-hic‘riV serves as a stop for bar" 33- and hav-ing a -
mitting spring 46 to rotate control member 4i
recesses and stoplug dill-,is movably mounted on
clockwiseunti-l recess -43 is; under bar 33. '
-
frame I4 ¿at pivot 45; Spring 46 connected at one -
The press can then be starte-d' bydepressing thev
end to latchl control member 4I« :and: a-t ther-other 5'0"' starting lever' 2-7'. Whenl the starting- levefV is» de
end 'to "spring bracket 4'I- on frame 'I4,~¿ tends'toA
pressed, bar 33 is
recess £3 and is retained
plull- the latch control'member 4I clockwise, that ~
therein by thelocking action of latch 35» on notch
is’to the right. In operating> position latch Ica-r
3l during the Vindexing movements of cams »I-,
33 restsïin recess 4-3. When latch control-member
until _the latch 35 is pushed out of notch 3l by
di is -so- turned that its surface 42: prev'ents down- 55î the »action of' end plate 49 on release rodL 35, which
ward movement oflatch bar 33, thepress will be -
again, as described above, stops thefpress.
locked out of operation because` clutch cam- 28
Ordinarily 'the workV carrying _member I2“ willy
be- held in» its successivefpositions- byVV itsï own'
cannot be withdrawn Vfrom engagement with1 `
'
Y
clutch-.key 29.-' The slide positioning bar`48» is
weight and friction between itV and theslid’esup- moi/ably attached to slide support I3- with guide .3.0 _po-rt' I3. Any other suitable means Vmayy be em
rods «53A in s_lide supporty I3," supporting the- slide '
ployed howeverY for holdingy the work fcarrying
positioning barV 48H. The slottedV member- 54» car- Y
member I2'l in »its successive; positions asI the cam->
rieti-'by slide positioning bar "i8> engages stop pin >
I is withdrawn from successive insertions> be- '
, 55 on- slide- support I»3 tov limit the movement of
tween the rollers'
For instance, a» onef way:
slide positioning bar 48. Slide positioning bar 65 brake trl'l operatingv on brake track 63- on- the
âß-seryes- asa stop for work carrying member or
channel may be employed'.
illustrated,V the
slide I2 Vby contacting the> end plates 49 of' the
channels. Likewise, the slide' positioning bar `-43,
when engaging the endïplates, 49er’V the channels,
brake 5'!> pivots eccentrical‘ly about' pin 5% vand
has a _spring 59 attached» at one »end to spring'
post 5_6. The other enid of spring- 59~ is attached
maybe pushed forward to place Athe work carry- y70 at spring-'post 6I on Vframe I4.“ The brake- is; pro
ing member I-2- and channels l- Vin starting posi- vided withA ‘brake release lever16'2‘.
tion,AV that is, so that the first roll adjacent-¿the
thrustb-lock- 4 is inV properf position under cam' I;
the action- of* thebrake, the- chan-nelv lïand work`
carrying memberV I2 are free to move forward but
Operating arm _5;8; a part orprattachedjto -cl'ran-l _
cannot' i move> backwards withoutY the operation A
nel end plate t2u and carrying setscrew 5I when 75 of brake release lever" 62".
2,404,369'
.
In ythe above spe'ciiic example the application`
of the present invention to a press for loading
ammunition or the like is described in detail, but
it should be understood that the invention is like
wise applicable to other devices and mechanisms
in which 'it is necessary to accurately position ob
jects. Likewise, although in the description the
cam and roller assemblyare effective for a dis
tance of only one roller diameter on each inser
tion ofthe cam, the positioning distances may be
made two or more roller diameters merely by ap
propriately changing the width of the cam I and
6i
rollers, a stop at one end of said series of rollers,
a stop separated from the other end of said series
of rollers by a resilient member, said stops being
rigidly connected to a work carrying member, a
frame supporting said work carrying member, „
and a translation cam adapted for insertion be- '_
tween adjacent rollers operative to drive the said
stops and work carrying member forward at least
one roll diameter upon each insertion of said
cam.
»
4. A worlr> positioning mechanism comprising.
in combination a series of laterally contiguous
rollers, a forward stop for said rollers rigidly con
the take-up in the resilient member indicated at
nected to a work carrying member, a rear stop
5 and 6 in the drawings. The work positioning
distances may also be varied by changing the. di 16 rigidly connected to said work carrying member
and separated from the other end of said series
ameter of the rollers, the larger diameter rollers
of rollers by a resilient member, means support
providing larger distances between work positions
ing said Work carrying member, and a cam mov
and smaller diameter rollers providing smaller
ably carried by said support means for insertion
distances between the work positions. Likewise,
the cam I, instead of being connected to the ram 20 between adjacent rollers and operative upon each
insertion between said rollers to drive said stops
I5, may be drivingly connected to the work car
and work carrying member forward oneroller
rying member I2, and the series of rollers 2 may
diameter.
.
y
then be carried by the ram I5, so that the cam I
5. A work positioning mechanism comprising
will move along with the work carrying member
I2. It is thus obvious that applicant’s invention 25 in combination a series of laterally contiguous.
rollers, a stop at one end of ‘said series of rollers,
has a wide field of utility and that many changes
a stop and an abutting member separated from
in the assembly and a wide variation in the con
each other by a resilient member at the otherV
struction thereof can be made without departing
end of said series of rollers, said stop being rigid-g
from the spirit and scope of applicant’s inven- 1
ly connected to a work carrying member, a frame
tion.
supporting said work carrying member, and a
This invention accordingly provides simple, ei
translating cam adapted for insertion between
ñcient, and inexpensive means for indexing and
adjacent rollers and operative to drive the' said
positioning objects with a high degree of preci
stops and Work carrying member forward at least
sion. It is to be understood that the embodi-.
one roller diameter upon each insertion of said
ments of the present invention as shown and de
cam, said abutting member and adjacent stop be
scribed are only illustrative, and that the scope ,
ing separated from each other by full extension
of the invention is not to be limited thereby ex
of said resilient means a distance equal to the
cept insofar as is deñned in the following claims.
width of said cam, so. that said stops and workHaving thus described’the invention, what is
carrying member are held stationary while said
claimed and desired to secure by Letters Pat
cam remains inserted between saidrollers.
ent is:
6. A work positioning mechanism comprising
1. A work positioning mechanism comprising
in combination a series of laterally contiguous
a roller element and a cam element, said roller
rollers, a forward stop for said rollers rigidly con
element having a series of laterally contiguous
rollers held in a channel at one end of the series 45 nected to the work carrying member, an abutting
member at the other end of said series of rollers,
by a stop and at the other end of the series by a
means supporting said work carrying member,
resilient member, said cam element being adapted
a cam movably carried by said support means for
for insertion between adjacent rollers to change
insertion between adjacent rollers, a rear stop rig
the relative positions of said elements upon each
insertion of said cam element, one of said ele 50 idly connected to said work carrying member and
_separated from said abutting member a distance
ments being drivingly connected to a work car
equal to the width of said cam by a resilient mem
rying member, and the other of said elements be~
ber, said cam being operative upon each inser
ing connected to a tool supporting member.
tion between said rollers to drive said stop and
2. «A work positioning mechanism comprising
a cam element and a roller element, said roller 55 work carrying member forward at least one roll
element being a series of laterally contiguous roll
diameter and While inserted between said rollers
ers held in a channel at one end of the series by
to hold said stop and work carrying member sta
a stop and at the other end of the series by a
tionary.
'
,
resilient member interposed between the rollers
'7. In a press having a tool carrying member
and a stop, said cam element being adapted for 60 and a work carrying member the combination
insertion between adjacent rollers to change the
comprising a roller element having a series of lat
relative positions of said elements upon each ir.
erally contiguous rollers held in a channel at
sertion of said cam, one of said elements being
one end of the series by a stop and at the other
drivingly connected to a work carrying member,
means for supporting and guiding said work car 65 end of the series by a resilient member, a cam
element adapted for insertion between adjacent
rying member, the other of said elements being
rollers to change the relative positions of said ele
connected to a tool supporting member, said re
silient member permitting lateral movement of
said rollers between said stops only to the extent
ments upon each insertion of said cam element, y
one of said elements being drivingly connected to
occasioned by the insertion of said cam, so that 70 said work carrying member, the other of said
elements being connected to said tool supporting
said elements are interlocked during each com
member,
means preventing starting of said press
plete insertion of the cam while the tools are in
while said work carrying member is out of start
ing position, and means for automatically stop
3. A work positioning mechanism comprising
in combination a series of laterally contiguous 75 ping the operation of said press when said work
working position.
7
8T
Vcarrying vmember has'traveled the distance pro
when said work carrying member has traveled the
‘vided -forby said cam and roller members..
.8; In Va press having a tool carrying member
complete working distance through said press. Y
9.`A work‘ positioning mechanism comprising
Vand a work Vcarrying member the combination
roller means and cam means, one'of said means
comprising channels each carrying a series of lat- Y - being drivingly connected to a work carrying
eral-ly contiguous rollers. and rigidly attached on
each side of said work carrying member, labut
nected to> a tool supporting member, said camV
ting members in said channels -at one end of said` '
meansgbeing adapted for insertion between suc- '
member and the other of saidvmeans being con- Y
series of rollers separated Vfrom the end of said
cessive rollers'in said roller means to drive said
Y `channel by resilient'members, cams carried by 161" work carrying member forward to successive pre
said work carrying member adapted for inser
determined positions', and means forholding said
work carrying member stationary While saidV cam
means is Withdrawn fromfbetween successive roll
tion between adjacent rollers in each `of said
channels, said'V cam being adapted to drive said
channels and Work carrying member forward at
ers in said roller means.
v
least one roller diameter upon each insertion, lor
said abutting members being separatedrfrom the
Yends of said? channels by said resilient members
a distance equal to the width of said cam, so
that said work carrying-member is,> held stationary
While said cams remain inserted between said roll
ers», means for operating said tool carrying mem
ber and said cams, means for preventing opera
10. A work positioning mechanism comprising
a series of rollers and a'cam adapted for inser
tion between adjacent'roller's in said series of
rollers, said series of rollers being carried in a
channel', said Ychannel'being attached to a workï
¿carrying member, said cam being adapted upon
each insertion between said rollers tov drive said
work- carrying member forward at least one roller '
tion of said tool carrying member and cams when
diameter, means for holdingv said work carrying ‘
said work carrying member and channels are out
member stationary while said cam is between said '
of operating position, means» for holding said 25 '.rollers, and means for holding said work carry
channels and work carrying members stationary
ing member stationary while said cam is being
while said cams are being. withdrawn from be
withdrawn from between said rollers.
'
tween said rollers, `and means for stopping op'
eration of said tool carrying member and» cams
'
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