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Патент USA US2408883

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L. ROBBINS
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2,408,882
SWAGING MACHINE
Filed Sept. 25, 1943
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Dct. 8, 1946.
2,408,882
L. ROBBINS
SWAGING MACHINE
Filed Sept. 25, 1943
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2,498,882
L. ROBBINS
swAsINé MACHINE
Filed'sept. 25, 1943
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Get. 8, 1946.,
L. ROBBINS
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SWAGING MACHINE
Filed Sept. 25. 1943
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SWAGING MACHINE
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Oct. 8, 1946.
L. ROBBINS
2,408,882
SWAGING MACHINE
Filed Sept. 25. 1943
7 Sheets-Sheet 7
2,408,882
Patented Oct. 8, 1946
UNITED STATES PATENT OFFICE
2,408,882
SWAGING MACHINE
Leo Robbins, New York, N. Y., assignor to Roberts
Manufacturing 00., New York, N. Y.
Application September 2 5, 1943, Serial No. 503,790
18 Claims. (Cl. 29-208)
1
This invention relates to swaging machines
wherein a member which encloses a second mem
ber is adapted to be fastened to the second mem
ber by the application of pressure. Thus, for ex
ample, the hub on the upper end of the cannula
of a hypodermic needle is swaged thereon.
It is the principal object of this invention to
' provide a completely automatic machine which
requires the services of an operator only to feed
the parts to be fastened together. Thereafter
the entire action consisting of the steps of moving
the parts to swaging position, performing the
swaging operation, releasing the parts from the
die and ?nally withdrawing the swaged members
2
forming one function, and a rod within the tu
bular member for performing another function,
together with separate levers for operating the
tube and the rod independently. It is an object
of this invention to permit the rod to perform its
function without tending to operate the tube to
such degree as to call for strong restraining
means on the tube. For this purpose I pivot the
rod operating lever on the tube operating lever in
such manner that upward movement of the rod
results in a downward reaction on the tube op
erating lever, whereby the movement of the rod
itself provides means for opposing the movement
the tube.
15 of Still
other objects and advantages of this inven
and depositing them in a suitable receptacle, are
tion will become apparent in the following de
all performed automatically in the stated se
quence.
tailed description thereof:
In the accompanying drawings,
It is a further object to provide a rotatable table
Fig. 1 is a plan view of one embodiment of my
in which are positioned the parts to be swaged, 20
said table being fed step-by-step to move the
invention.
Fig. 2 is a side elevation of the Fig. 1 machine
parts to the swaging position, and then applying
with parts broken away and parts sectioned.
the swaging pressure in such manner as not to
Fig. 3 is a vertical section through the tube
strain the table. For this purpose, I provide
means for applying the pressure not merely to 25 and rod element shown in Fig. 2.
Fig. 4 is a section taken substantially on the
one side of the table in the swaglng position, but
to both sides thereon in such manner that the
line 4—4 of Fig. 2.
i
Fig. 5 is a section taken substantially on the
pressures equalize, and thus the swaging pressure
is applied to the table without straining or twist-7
line 5-—5 of Fig. 1.
Fig. 6 is an enlarged section of a portion, of
ing the table.
30
the Fig. 5 device. ‘
'
‘
It is a further object of my invention to provide
Fig. 7 is a section taken substantially on the
means for supporting the article to be swaged in
line 'I—l of Fig. 1.
the table in such manner that when the swaging
Fig. 8 is a section taken substantially on the
pressure is applied at the top and bottom of the
line 8—-8 of Fig. '7.
table, the article will be able to adjust its position
Fig. 9 is a section taken substantially on the
for variations in position and variations in length
line 9—9 of Fig. 8.
of the article itself. For this purpose I provide
Fig. 10 is a section taken substantially on the
means whereby the article is supported in the ta
line ill-l0 of Fig. 7.
ble in the swaging position solely by friction
Fig. 11 is a section taken substantially on the
means, which can be overcome by swaging pres 40
sure.
line l|—-H of Fig. 5.
Still another object of my invention is to pro
vide means for applying the swaging pressure
through a toggle mechanism which can employ a
Fig. 12 is a section taken substantially on the
line !2—l2 of Fig. 5.
Fig. 13 is a section taken substantially on the
minimum length of toggle lever while at the
time giving the maximum movement of the swag
line l3—l3 of Fig. 12‘ but with the parts shown
one-half cycle displaced from Fig. 12.
Fig. 14 is a section taken substantially on the
ing means in a predetermined time interval.
line Iii-44 of Fig. 7.
Thus, with a minimum length of toggle lever, I
Fig. 15 is a section taken substantially on
am enabled to withdraw the punch from the
table in only a fraction of the cycle during which 50 the line l5—-i5 of Fig. 14.
Fig. 16 is a section taken substantially on the
the table is stationary.
line l6—l6 of Fig. 14.
Still another object of my invention is to pro
Fig. 17 is a section taken substantially on the
vide means for performing a plurality of steps
in withdrawing and discharging swaged articles,
said means including a tubular member for per~ 55
line ll-I'I of Fig. 4.
'
The following description of the automatic
2,408,882
3
swaging machine relates to the swaging of hubs
on hypodermic needles, but it will be understood
that this is for purposes of illustration only, and
it will become quite apparent from the descrip
tion that the invention is applicable generally to
the swaging of any similar articles, and in fact,
wherever one article encloses another and is to
be fastened thereto solely by pressure.
The device comprises a table In having a plu
4
of gear 35, the star wheel 39 ?xed concentrically
to the shaft 33 on which the table II) is mounted.
Thus, once for each revolution of worm wheel 35,
the table ID will be moved one step corresponding
to the angular distance between the supports,
said distance being that between stations C and
D, and between stations D and E.
In order to de?ne the steps so that the table
will be positioned exactly in operating position
rality of supports I I mounted therein adjacent its 10 at each step, there is provided a de?ning pin 40
outer circumference at uniformly spaced inter
vals, each of said supports II being adapted to
(see Figs. 2 and 5), which is normally spring
pressed upwardly by means of a spring 4| in the
hold the articles to be swaged, in this case, a hy
fixed support so as to tend to move the upper
podermic needle and a hub to be fastened to the
tip 42 of the pin into a corresponding detent 43
upper end thereof. Such needle and hub are 15 in the table. When pin 40 enters detent 43 the
shown in several of the figures, as for instance,
table is in the proper operating position. When
Figs. 6, 7, 8 and 9, all of which show a needle I2
the table is to be moved to a new position, the pin
and a hub I3. Each of said supports II has a
4-3 is withdrawn by means of a lever 45 pivoted at
tubular opening I5 extending vertically there
on the ?xed frame, and having a roller 41 at
through, slightly larger than the needle so that
one end adapted to be engaged by the cam por
the needles can readily be inserted within the
tion- 48 of a cam ?xed upon the shaft 38 which
supports. The needles drop into the holes I5
carries the worm 34. The cam 48 is so positioned
until they rest upon a circular track I1 formed
that when the operations at C, D and E are com
in the ?xed support I8 in which the table is sup
pleted, and the table is to be moved to the next
ported for rotation. An operator, sitting at the
step, said cam will engage roller 41 to lift that
upper left in Fig. 1 inserts the needles and then
end of the lever and depress the other end of the
places a hub I3 on each needle, each hub having
lever which is in the form of a fork 49 engaging
a shoulder 20 (see Fig. 6) adapted to rest on the
lateral arms 50 on the pin 40 to depress the pin
upper end of the needle. The hub has a circular
against the action of spring 4| and withdraw the
converging portion ZI which surrounds the upper
tip 42 from the detent 43. As soon as the star
end of the needle, and it is this portion which is
wheel has moved the table to the next step, the
to be swaged to the upper end of the needle, that
cam 48 ends, allowing lever arm 45 to drop and
is, ?xed thereto, solely by pressure. The hub has
fork 49 to rise, thus permitting the tip 42 to enter
a central opening 22 in alignment with the open
the next detent 43. The table is thus moved step
ing in needle I2, and also has an upper portion 23
by-step through the proper angular distance, and
provided with a hollow, slightly downwardly ta
pering interior 24.
Referring to Fig. 6, it will be seen that the up
each step is de?ned by the de?ning mechanism
adaptedto receive the downwardly tapering por
tions on this particular needle and hub. In posi
tion A the needle still rides upon the supporting
track I ‘I in the ?xed support. However, when
the needle is moved into swaging position, the
track cannot be used because during the swaging
operation the hub is moved downwardly. The
needle must also be able to move downwardly,
otherwise it would bend. Therefore, the ?xed
support at the lower end of the needle provided
by track II is replaced by a frictional means per
mitting movement of the needle in its support.
For this purpose, the table II carries pins 52,
one for each support. Each pin 52 (see Fig. 6)
just described to bring the supports I I into the
proper working position.
per end of each support II is provided with a die
Let us take for example, the support II which
25 having a downwardly tapering portion 26 40 is in position A, and follow through the operae
tion H of the hub I3. It will be seen that if the
needle is held stationary within the support II,
and su?icient pressure is applied to drive the hub
I3 into the die 25, the portion ZI of the hub will
be pressed ?rmly around the outer surface of the
upper end of the needle I2 so as to be permanent
ly ?xed thereto.
The operator having inserted the needle and
hub in each support I I after the table has passed I"
the station marked “S” in a clockwise direction,
it is then the function of the machine to feed
each support successively to the swaging position
indicated at C, thence to position D where the
hub is released from the tight pressure in the die i.
25, and then to position E where the swaged ar
ticles are lifted out of the support and deposited
in a suitable receptacle.
extends through the support but is normally held
out of engagement with the needle by reason of
the fact that the pin is connected to a spring
member 53 ?xed to the periphery of the table at
54 and having a roller 55 at its outer end. As
For carrying out the above automatic steps, it
the table carries each needle into position A, we
is ?rst necessary to drive the table in a step-by 60 see that it is but two steps away from the swaging
step circular motion so that each support II will
position, and therefore, as the table moves from
?rst pass in front of the operator who supplies
position A to position B, which is the last posi
the articles to be swaged, and» will then be carried
tion having the support II, the rollers 55 pass
successively to swaging position C, releasing po
sition D, and lifting and discharging position E.
For driving the. table in the step-by-step circular
motion, the table may be mounted on a shaft 30
journaled in the ?xed support I8 and adapted to
be driven from any suitable source of power, such
as the belt and pulley 3|, 32. Pulley 32 operates
the‘ main drive shaft 33 provided with a worm 34
at its inner end, said worm meshing with a worm
wheel- 35’ having a member 36' concentric there
with, said member carrying a- planetary pin 31
designed to engage, once‘ during each revolution
under a cam‘ member 56 which presses the springs
against the periphery of the table II) and forces
the pins 52 into engagement with the needle I2
within the support I I in position B. As the table
moves the needle from position B to position C,
it will be seen that since the track I 1 ends before
position C, the needle is held in the support solely
by the frictional engagement of pin 52 with the
needle I2. The cam 56 extends far enough so
that the pins 52 remain in engagement with the
needle until after the needle has left position C,
that is, until after it has been swaged, in which
2,408,882
5
able that the movement of pivot 14 to the right‘
case it is ?rmly held by reason of the fact that
be held to the minimum necessary to accomplish
the hub l3 has been pressed tightly into engage
breaking of the toggle and to yield su?icient
ment with the upper end of the needle. There
movement of end 61 to permit spring 86 to lift
after, it is no longer necessary to maintain the
pins 52 in frictional engagement with the needle, 5 the plunger 69 and the punch 62 to the necessary
height to clear the hub in the neXt succeeding
and springs 53 are allowed to extend themselves
support II. In order to keep the link ‘II as short
to their natural position to withdraw the pins 52.
as possible, the eccentric ‘I9 is provided with a
The needle I2 held frictionally by pin 52 in the
mutilated or cut off portion 90 so that when point
support II after leaving position B, and loosely
supporting its hub I3, is now moved into the 10 9| at the beginning of said mutilated portion
reaches the projection 83, no further outward
swaging position C. In this position the table I8
movement of plate 11 will take place. If the
is cut away so that pressure may be applied to
the upper and lower ends II’ and I I" of the sup
eccentric were not so mutilated, there would be
62 also tapers downwardly so as to enter within
to cause the desired degree of movement of the
continued movement of plate ‘I'I until point 92
port II. The support II extends below the bot
tom of table It), and the hub I3 extends above 15 reached the projection 83, and this would give a
much larger throw of the eccentric, and would
the top of table II] so that pressure may be ap
necessitate a longer link ‘II, and hence, enlarge
plied at both ends without engaging the table.
ment of all of the parts to yield the same move
For applying the swaging pressure there may be
ment of end 61 of lever 63 in the given time
provided two plungers, an upper plunger 60 and
interval.
a lower plunger GI. The upper plunger 60 may 20
The eccentric ‘I9 thus moves the plate 11 and
be provided with a punch 62 adapted to enter
link 15 to the right only the distance necessary
the hollow interior 24 of the hub I3. The punch
the downwardly tapering interior 24 of the hub.
toggle to cause plunger 60 to clear the oncoming
site ends, the lower portion 2| of hub l3 will be
driven further and further into the decreasing
cavity 26 in the die 25 until portion 2| is pressed
into ?rm engagement with the needle I2.
The means for applying pressure to the plung
difficult or almost impossible to rely upon this
same eccentric ‘I9 to force the plate TI and link
75 toward the left. Therefore, I provide upon
the same eccentric ‘I9, two outer plates 93 and
94 which are not connected to the plate 16 of link
‘I5, but which may abut against it. The portions
It will be seen that if pressure is applied simul- 25 hub. This is due to the mutilated portion 90, but
by reason of this mutilated portion, it would be
taneously by both plungers 69 and GI at oppo
ers 69 and ti is such that the pressures on these
plungers are equal, and therefore the pressures
95 cf eccentric ‘I9 on which are positioned these 7
rangement of two freely pivoted levers constitutes
tion of the eccentric portions 95 will move plates
93 and 94 toward the left to accomplish the
straightening of the toggle and the application of
the pressure to the levers 63 and 64, and hence,
to the plungers 60 and BI.
The shaft 89 (see Figs. 2 and ll) may be driven
from the driving source 3|. 32 by‘ any suitable
plates 93 and 94 are completely circular, and
on opposite sides of the table I0 are equal, and
thus, the table is not subjected to any twisting 35 therefore,‘ will withdraw the plates 93 and 94
toward the right a further distance than plate 11
stresses and strains which would be highly injuri
is withdrawn toward the right (see Fig. 12').
ous in this type of machine. Such equal pres
However, while the projection 83 of plate ‘I’! is
sures are obtained by means of two levers 63 and
riding in the out 01f or mutilated portion of ec
B4 pivoted on the ?xed support at 95 and 66 re
spectively, said levers having their inner ends 61 40 centric ‘I9, the eccentric portions 95 are starting
to move the plates 93 and 94 toward the left, and
and 68 in engagement with the plungers 6|] and
these plates 93 and 94 will come into abutting
BI respectively. It will now be seen that if pres
engagement with the plate It just at the time
sure is applied between the outer ends of the
that the end 91 of the mutilated portion reaches
levers, said pressure will be equally distributed
the projection 83. Thereafter continued rota
between the two levers, that is to say, the ar
a self-equalizing arrangement.
For applying pressure to the outer ends of
levers 63 and 64, there may be provided a toggle
consisting of two links ‘I9 and ll, the link ‘It 50
comprising several parts to be described herein
after, and pivoted to lever 63 at ‘I2, while the link
‘II is pivoted to the lever 64 at ‘I3. The links are
pivotally connected at 14. They are shown in
driving connections such as the worm 98 and the
worm wheel 99, the latter being ?xed to the shaft
alignment, that is, in their pressure applying po- 55 80.
It will be understood that slight variations may
sition, but the toggle may be broken by pulling
occur in the distance between the plungers 60
pivot ‘I4 toward the right in Fig. 5. The means
and GI due to the slight variations in the length
for applying pressure to the pivot ‘I4 to straighten
of the needle and hub, and if the pivots 12 and
and break the toggle may take the form of a link
‘I5 pivoted to the pivot 14, and having at its upper 60 ‘I3 on levers 53 and 64 were always moved apart
the same distance when the toggle was straight
end a plate ‘I9 to which is ?xed a plate ‘H (see
ened, and the plungers 69 and BI always moved
Figs. 12 and 13). For operating the link 15 to
together the same distance, there would result
the right to break the toggle, there is provided
unequal pressures, and in some cases, might even
eccentric operating within a slot or cavity 8|. As 65 result in destruction of the swaged articles due to
excessive pressure. Therefore I provide means
the shaft 89 rotates, the eccentric ‘I9 will press
in
the link 19 for a certain amount of lost motion
against a projection 83 ?xed to the outer end of
when a predetermined pressure between the
plate 11 within the cavity 8|, and thus force the
a mutilated eccentric ‘I9 on driving shaft 80, said -
plungers 69 and 6| has been exceeded. For this
plate 11, and hence link ‘I5, to the right. This
will break the toggle because pivot '74 will be 70 purpose the link 59 is formed in two parts, the
lower part having a rod I99 slidable in a sleeve
pulled toward the right, It is desirable that the
IE; I, the part I99 having a lower shoulder I92, and
link ‘H be as short as possible, for thereby there
the part I9! having a screw-threaded nut I I33.
is obtained the maximum angular displacement
A heavy spring I95 is positioned between the nut
of said link for a given linear movement of the
pivot ‘I4 toward the right. Therefore it is desir- 75 I03 and the shoulder I02 to keep the parts nor
2,408,882’
7.
mally spread apart with a predetermined ten
sion; It is only when this tension is exceeded by
pressure generated between plungers 60 and 6| _
8
their other end at I35 to an operating link I36‘
which, when drawn to the right, will open the
toggle, and hence open the ?ngers I 30 against
the action of springs I31. For maintaining the
that any movement will take place between the
rod and the sleeve, the rod moving inwardly
?ngers I 30 normally open, the link I36 is nor
within the sleeve. The rod. may carry at its up
per end a stop I06 slidable within a bore I01 in
mally drawn to the right by means of a bell crank
I40 pivoted at I4I‘ within a housing I42, said
the sleeve IOI to limit the-effective length‘ of the
link 60-. The tension of spring I05 may be regu
bell crank being connected to link I36 at I43,
and having its other end normally operated in a
lated by screwing the nut I 03 up or down on
sleeve IOI by means of the screw thread ar
counter-clockwise direction by means of a rod
rangement IIII.
I50 normally pressed upwardly (by means to be
described hereinafter) to swing the bell crank in
Since the levers 63' and 64 and the pressure
a counter-clockwise direction. This maintains
applying mechanism in the form of the toggle
the ?ngers I30 normally open. The said ?ngers
constitute a ?oating assembly to the extent that 15 are also maintained normally raised above the
it is movable around pivots 65 and 66, I may
table I0 by a distance in excess of the length of
provide a springv pressed plunger III within a
the hub and needle, and for this purpose the
?xed cylinder H2 with a spring I I3 to press it
housing I42 is ?xed to a sleeve I52 within which
upwardly into engagement with the outer end of
the rod I50 operates, and the sleeve I52 is also
lever 64. This serves not only to support the 20 maintained upwardly against the action of a
?oating linkage, but also to release the plunger
spring I53 by means to be described hereinafter.
6 I when the toggle is broken.
The means for maintaining the rod and sleeve
The hub having been swaged on to the upper
normally in elevated position, in which position
end of the needle in position C, and the plunger
the ?ngers I 30 are open, is shown in Fig. 2, and
elements 65‘ and’ GI having been withdrawn from
comprises a set of cams I55 and I56 mounted
engagement with the hub‘ and the lower end' of
upon the shaft 83 and engaging One end of a pair
the‘ support II, the said support carrying the
of levers I51 and I53. Lever I51 is pivoted on
swaged needle and hub is ready to be moved‘ to
the ?xed frame at I59 while lever I58 is pivoted
position D. During its movement to this posi~
on lever I51 at I60. The inner end I 6| of lever
tion it is the function of the apparatus to release
I58 engages the rod I50 while the inner end I62
the hub I3 from its tight engagement within the 30 of lever I51 may take the form of a fork engaging
die 25 into which it has been pressed by the
pins I63 on the sleeve I52. It will be apparent by
plunger 60 and the punch 62. For this purpose
reason of the pivoting of lever I58 on lever I51
I cause the movement of the table itself to effect
at I 60 that when lever I51 moves around its pivot
such' release of the hub and its needle from the
I 59, the lever I 58 will be carried up and down to
die. Therefore I provide upon the ?xed support,
gether with lever I51, and therefore, the rod I50
in the line of movement of the hub I3, a pair of
will move up or down simultaneously with sleeve
spaced, similar inclines I20 formed in a bracket
I52. However, the lever I68 can pivot around
I2I supported on a- frame I22 ?xed to the ?xed
its pivot I60 independently of any movement of
frame I8. These inclines (see Fig. 10) are so 40 lever I51 in order to operate the rod I50. There
positioned that the aperture I23 between them is
fore, it is possible to design the cams I55 and I56
in the line of movement of the portion of the hub
to give the following sequence. The end I 62 of
2| just above the die 25. This portion of the
lever I 51 is normally held raised, which also raises
hub therefore enters the aperture I23 and rides
rod I50 and keeps jaws I30 open. When the
up the incline as the table rotates, thus forcing
housing I42 is swung from the dotted line posi
the hub out of the die until the hub rides on the
tion to the full line position shown in Fig. l (by
upper surface I25 of the inclines (see Figs. 8
means to be described hereinafter), the housing
and 9).
I42 is lowered by moving end- I62 downwardly.
The swaged hub having now been released
This moves rod I50 downwardly also, but since
from its jammed position in the die, it is ready to 50 there is no relative movement between rod I50
be discharged from the support II in the table,
and sleeve I52, the jaws I30 remain open. When
and deposited in a suitable receptacle. This is
housing I 42 has reached its lowermost position
accomplished when the respective support has
wherein the jaws I30 straddle the hub in position
moved to position E. In this position it is neces
E, the rod I50 is given an independent movement
sary for gripping ?ngers to engage the hub, lift
downwardly relative to the sleeve I 52, and this
the hub and needle out of the support II, and
permits springs I36 to close the toggle and cause
deposit it- in the receptacle. Since the gripping
the members I30 to grip the hub. The cam I55
?ngers must ordinarily be out of the way when
then operates on lever I51 to raise sleeve I52, rod
the hub moves into position E, it will be under
I 50 and housing I42 until the hub and needle
stood that the following operations must be ac
clear
the table, but since there is no relative
60
complished: The normally open gripping ?ngers
movement between rod I 50 and sleeve I52‘, the
I30 are in the dotted line position shown in Fig.
laws I 3tv remain closed on the hub. Then the
l, and must ?rst be swung into the full line posi
housing I42 is swung to the dotted line position
tion, lowered, caused to grip the hub, raised,
shown in Fig. l, and after this position is reached,
swung again to the dotted line position and 65 rod I50 is moved upwardly relative to sleeve I52
opened to release the needle and hub. All of
to operate the bell crank I40 to the dotted line
these’ movements are accomplished in the inter
position in Fig. 7, thus opening the toggle and re
val between steps of the table. In order to ac—
leasing the jaws I30. The swaged. hub and needle
complish all of the above movements, I provide
then drop into a suitable receptacle positioned
a pair of gripping ?ngers I30 (see Fig. 14), said 70 outside the path of movement of the table
?ngers forming the outer ends of a pair of levers
From the above description it will be seen that
I'3I pivoted at I32 and having their outer ends
by pivoting lever I58 on lever I51, relative move
normally operated by means of a toggle compris
ment between the rod I50 and the sleeve I52 is
ing a pair of links I33 pivoted to levers I3I at I 34,
accomplished without the necessity of providing
and said links I33 being pivotally connected at 75 strong restraining means, that is, a strong re
2,408,882
10
straining spring on sleeve I52. Such a strong re
taining spring would necessitate heavier operat
ing mechanism for operating lever I5'I. By pivot
ing lever I58 on lever I51 it will be seen that any
upward movement of the rod results in a down
ward reaction on the sleeve so that the very
movement of the rod itself provides a restraining
force which prevents the sleeve from following
along with the rod, and thus, obviates the neces
sity of strong restraining means on the sleeve. 10
Only a light retaining spring I53 is therefore em
ployed.
For accomplishing the rotation of the housing
I42 from the dotted line position to the full line
position in the above sequence, there may be 15
mounted on the shaft 80 an eccentric I'll! (see
table and a support mounted in said table, said
support being adapted to carry the articles to
be swaged, characterized by means for swaging
articles by the application of pressure Without
introducing stresses and strains in the table due
to twisting moment, said last named means in
cluding a pair of pivoted levers, one arm of one
lever being operatively connected to one end of
said support, the corresponding arm of the other
lever being operatively connected to the other end
of said support, and means for applying pressure
between the other arms of said levers, whereby
equal pressures will be applied to opposite ends
of said support.
4. In a swaging machine having a movable
table and a support mounted in said table, said
support being adapted to carry the articles to be
Fig. 17), which has connected thereto a connect
swaged, characterized by means for swaging ar
ing rod I‘II (see Fig. 4), which is pivotally con
ticles by the application of pressure without in
nected at I12 to a bell crank I13 ?xed to the
sleeve I52. .The eccentric I10 is so positioned as 20 troducing stresses and strains in the table due to
twisting moment, said last named means includ
to accomplish the rotation of the sleeve I52 be
ing a pair of pivoted levers, one arm of one lever
tween the dotted line and full line positions
being operatively connected to one end of said
shown in Fig. 1 in the sequence described above,
support, the corresponding arm of the other lever
which may be summarized as follows: The hous
being operatively connected to the other end of
ing I42 is in raised position with the jaws I30
said support, and toggle means connected between
open as shown in dotted lines in Fig. 1. The
the other arms of said levers for applying pres
housing is ?rst swung from dotted line position
sure therebetween, whereby equal pressures will
to full line position in raised position with the
be applied to opposite ends of said support.
.
jaws I30 open; the housing I42 is lowered with
5. In a swaging machine having a movable
the jaws open until the jaws straddle the hub in 30
table and a support mounted in said table, said
the support II; the jaws I30 are closed on the
support being adapted to carry the articles to be
hub; the housing I42 is raised with the jaws
swaged, characterized by means for swaging ar
grasping the hub and lifting the hub and needle
ticles by the application of pressure without in
out of the support to the position shown in Fig.
troducing stresses and strains in the table due to
'7; the housing is swung to the dotted line posi
twisting moment, said last named means includ
tion shown in Fig. 1 with the jaws closed; ?nally
ing a pair of pivoted levers, one arm of one lever
the jaws I30 are opened to release the hub and
being operatively connected to one end of said
needle.
support, the corresponding arm of the other lever
In accordance with the provisions of the patent
statutes, I have herein described the principle and 40 being operatively connected to the other end of
said support, and toggle means connected between
operation of my invention, together with the ap
the other arms of said levers for applying pres
paratus which I now consider to represent the
sure therebetween, "whereby equal pressures will
best embodiment thereof, but I desire to have it
be applied to opposite ends of said support, said
understood that the apparatus shown is only il
lustrative and that the invention can be carried 45 toggle means including lost motion means for
taking up pressures between said lever arms in
out by other equivalent means. Also, while it is
excess of a predetermined pressure.
designed to use the various features and elements
6. In a swaging machine having a movable
in the combination and relations described, some
table and a support mounted in said table, said
of these may be altered and others omitted with
out interfering with the more general results out 50 support being adapted to carry the articles to be
swaged, characterized by means for swaging ar
lined, and the invention extends to such use.
ticles by the application of pressure without in
Having described my invention, what I claim
troducing stresses and strains in the table due to
and desire to secure by Letters Patent is:
twisting moment, said last named means in
1. In a swaging machine having a movable
cluding a pair of pivoted levers, one arm of one
table and a support mounted in said table, said 55 lever being operatively connected to one end of
support being adapted to carry the articles to be
said support, the corresponding arm of the other
swaged, characterized by means for swaging ar
lever being operatively connected to the other end
ticles by the application of pressure without in
of said support, and toggle means connected be
troducing stresses and strains in the table due
tween the other arms of said levers for applying
to twisting moment, said last named means in 60 pressure therebetween, whereby equal pressures
cluding movable members, one member engaging
will be applied to opposite ends of said support,
each end of the support, and means for applying
said toggle means including resilient lost motion
equal pressure to said movable members.
means for taking up pressures between said lever
2. In a swaging machine having a movable
arms in excess of a predetermined pressure.
table and a support mounted in said table, said 65
'7. In a swaging machine having a movable
support being adapted to carry the articles to
table and a support mounted in said table, said
be swaged, characterized by means for swaging
support being adapted to carry the articles to
articles by the application of pressure without
be swaged, characterized by means for swaging
introducing stresses and strains in the table due
articles by the application of pressure without
70
to twisting moment, said last named means in
introducing stresses and strains in the table due
cluding movable members, one member engaging
to twisting moment, said last named means in
each end of the support, and self-equalizing
cluding a pair of pivoted levers, one arm of one
means for applying equal pressures to said mov
lever being operatively connected to one end of
able members.
75 said support, the corresponding arm of the other
3. In ‘a swaging machine having amovable
72,403,882
-11
lever being operatively connected to the other end
‘gle links, an operating ‘link connected ,to said
pair of links, one ofsaid pair of links beingrela—
tively short to give maximum angular movement
of said support, and toggle means connected be
tween the other arms of said levers for applying
pressure therebetween, whereby equal pressures
will be applied to opposite ends of said support,
said toggle means including lost motion means
for taking up pressures between said lever arms
for a given linear movement .of the operating
link, and actuating means for said operating link
in excess of a predetermined pressure, and means
whereby the degree of said predetermined pres
sure may be varied.
8. In a swaging machine having a movable
table and a support mounted in said table, said
support being adapted to carry the articles to be
swaged, characterized by means for swaging ar
ticles by the application of pressure without in
troducing stresses and strains in the table due to
twisting moment, said last named means includ
ing a pair of pivoted levers, one arm of one lever
being operatively connected to one end of said
support, the corresponding arm of the other lever 3
being operatively connected to the other end of
said support, and toggle means connected between
the other arms of said levers for applying-pres
sure therebetween, whereby equal pressures will
be applied to opposite ends of said support, said _
toggle means including a pair of toggle links, one
of said links having lost motion means for taking
up pressures between said lever arms in excessof
a predetermined pressure, said lost-motion means
comprising two relatively movable parts, resilient ._
means interposed between said parts, and means
for varying the resistance o?ered by said resilient
means whereby the degree of said predetermined
pressuremay .be varied.
9. In a swaging machine having a movable l
table and a support mounted in said table, said
support being adapted to carry the articles to
be swaged, characterized by means for swaging
articles by the application of pressure without
introducing stresses and strains in the table due
to twisting moment, said last named means in
cluding a pair of pivoted levers, one arm of one
lever being operatively connected to one end of
said support, the corresponding arm of the other
‘lever being operatively connected to the other
end of said support, and toggle means connected
between the other arms of said levers for apply
ing pressure therebetween, whereby equal pres
sures will .be applied to opposite ends of said sup
port, said toggle means including a pair of toggle
links, an operating link connected to said pair
of links, one of said pair of links being relatively
short to give maximum angular movement for
a given linear movement of the voperating link,
and actuating means- for said operating link in
including an eccentric and means whereby said
eccentric is effective for only an operation of
the total throw thereof in the direction for ‘ren
dering the toggle ineffective to permit the use of
said relatively short'link.
11. 'In a swaging machine having a movable
table and a support mounted in said table, said
support being adapted to carry the articles to
be swaged, characterized by means for swaging
articles by the application of pressure without
introducing stresses and strains in the table due
to twisting moment, said last named means in
cluding a pair of pivoted levers, one arm of one
lever being operatively connected to one .end of
said support, the corresponding arm of the other
lever being operatively connected to the other
end of said support, and toggle means connected
between the other arms of said leversfor apply
ing pressure therebetween, whereby equal pres
sures will be applied to opposite endsrof said sup
port, said toggle means including a pair of toggle
links, an operating link connected ‘to said pair
of links, one of said pair of links being relatively
short to give maximum angular movement vfor
a given linear movement of.the operating link,
and actuating-means for said operating link in
cluding an eccentric and a projection connected
to said operating link and adapted to engage said
eccentric, said eccentric having a cutout portion
whereby the eccentric engages said projection for
only a portion of the total throw thereof in the
direction for rendering the toggle inelfective to
permit the use of said relatively short link,
12. In a swaging machine having a movable
40 table anda support mounted in said table, said
support being adapted to carrythe articles to be
swaged, characterized by'means for swaging ar
ticles by the application of pressure without in
troducing stresses and strains in the table due
to twisting moment, said last named means in
cluding a pair of pivoted levers, one arm of one
lever being operatively connected to one end of
said support, the corresponding arm of the other
lever being operatively connected to the other
end of said support, and toggle means connected
between th other arms of said levers for apply
ing pressure therebetween, whereby equal pres
sures will be applied to opposite ends of said sup
port, said toggle means including a pair of toggle
links, an operating link connected to said pair
of links, one of saidpair oflinks'beingrelatively
short to give maximum angularmovement for
a given linear movement of the operating link,
relatively short link.
'
and actuating means for said operating link in
10. In a swaging machine having a movable
table anda support mounted in said table, said 60 cluding anlaccentricga projection connected to
said operating link and adapted to engage said
support being adapted to carry the articles tobe
eccentric, said eccentric having a cutout portion
swaged, characterized by means for swaging ar
whereby the eccentric engages said projection for
ticles by the application of pressure without in
only a portion of the total throw thereof in the
troducing stresses and strains in the table due
65 direction for rendering the toggle ineffective to
to twisting moment, said last named means in
permit the use of said relatively short link, addi
cluding a pair of pivoted levers, one arm of one
tional
eccentric means normally ine?ectivewhile
lever being operatively connected to one end of
the toggle is rendered ineffective, but adapted to
said support, the corresponding arm of the other
become eifective to render said toggle effective
lever being operatively connected to the other
cluding an eccentric and means whereby said
eccentric is velfective for only an operation of
the total throw thereof to permit the use of said
end of said support, and toggle means connected
between the other arms of said levers for‘apply
ing pressure therebetween, whereby equal pres
sures will be applied to opposite ends of said sup
port, said toggle vmeans includinga pair of tog
after the limit of movement of said operating
link in an ineffective direction has been-reached.
13. A swaging machine havinga table, means
for moving said table, a support mounted in
said table, said support being adapted to 'ioarry
the articles to be swaged, said support-having a
2,408,882
13
14
terminates for frictionally holding said article in
die in which the articles are adapted to be pressed
and means for pressing said articles in said die,
characterized by means whereby the movement
the respective support.
of the table frees said articles from tight fric
and a table unovably supported in said frame, a
tional engagement with said die, said last named
means comprising a relatively ?xed cam, one of
said articles being provided with a projection in
the path of said cam as said table is moved.
17. A swaging machine having a ?xed frame
plurality of supports carried by said table, said
supports being adapted to carry the articles to
be swaged, each support having a bore extending
substantially vertically therethrough, said bore be
ing of such dimension as to permit one of said
14. A swaging machine having a table, means
for moving said table, a support mounted in said 10 articles to fall freely therethrough, character
ized by a track on said frame adapted to support
table, said support being adapted to carry the
the article at its lower end, said track terminat
articles to be swaged, said support having a die
ing in advance of the swaging position to permit
in which the articles are adapted to be pressed,
the swaging operation to be performed, and means
and means for pressing said articles in said die,
characterized by means whereby the movement of 15 adapted to be rendered effective before said track
terminates for frictionally holding said article in
the table frees said articles from tight frictional
the respective support, said last named means
engagement with said die, said last named means
comprising a pin for each support, the support
comprising relatively ?xed, spaced cams, said
having a lateral opening in which said pin oper
articles being so positioned as to enter the space
between the cams during the movement of said 20 ates, said opening extending from the outside of
the support into the bore, means for normally
table, one of said articles being provided with a
maintaining said pin out of engagement with the
projection adapted to engage both of said cams
article in said bore, and means adapted to become
as said articles enter said space.
e?ective before said track terminates for moving
15. A swaging machine having a ?xed frame
said pin into engagement with the article in said
and a table movably supported in said frame, a
bore.
plurality of supports carried by said table, said
18. A swaging machine having a ?xed frame
supports being adapted to carry the articles to
and a table movably supported in said frame, a
be swaged, each support having a bore extending
substantially vertically therethrough, said bore
plurality of supports carried by said table, said
being of such dimension as to permit one of said 30 supports being adapted to carry the articles to be
swaged, each support having a bore extending
articles to fall freely therethrough, characterized
substantially vertically therethrough, said bore
by a track on said frame adapted to support the
being of such dimension as to permit one of said
article on its lower end, said track terminating in
advance of the swaging position to permit the
swaging operation to be performed, and means
adapted to be rendered effective before said track
terminates for holding said article in the respec
tive support.
16. A swaging machine having a ?xed frame
and a table movably supported in said frame, a 40
plurality of supports carried by said table, said
supports being adapted to carry the articles to
be swaged, each support having a bore extending
substantially vertically therethrough, said bore
being of such dimension as to permit one of said
articles to fall freely therethrough, characterized
by a track on said frame adapted to support the
article at its lower end, said track terminating in
advance of the swaging position to permit the
swaging operation to be performed, and means
adapted to be rendered effective before said track
articles to fall freely therethrough, character
ized by a track on said frame adapted to support
the article at its lower end, said track terminat
ing in advance of the swaging position to permit
the swaging operation to be performed, and means
adapted to be rendered effective ?cefore said track
terminates for frictionally holding said article in
the respective support, said last named means
comprising a pin for each support, the support
having a lateral opening in which said pin oper
ates, said opening extending from the outside of
the support into the bore, spring means for nor
mally maintaining said pin out of engagement
with the article in said bore, and a cam adapted
to become effective before said track terminates
for engaging said pin and moving it into engage
ment with the article in said bore.
LEO ROBBINS.
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