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Патент USA US3069008

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Dec? 18, 1962
H. KLEPPER ETAL
3,068,998
DISTRIBUTOR SHIFTER FOR LINECASTING MACHINES
Filed Feb. 23, 1961
5 Sheets-Sheet 1
"
..... --
INVENTORS.
HERBERT KLEPPER. I
BY WILLIAM B. ABBOTT
mייי M
Dec. 18, 1962
H. KLEPPER ETAL
3,068,998
DISTRIBUTOR SHIFTER FOR LINECASTING MACHINES
Filed Feb. 25, 1961
3?Sheets-Sheet 2
1
INVENTORS.
HERBERT KLEPPER
BY W/LUAM
B. BBOTT
Dec. 18, 1962 ?
3,068,998
H. KLEPPER ETAL
DISTRIBUTOR SHIFTER FOR LINECASTING MACHINES
Filed Feb. 23, 1961
3 Sheets-Sheet 3
.ulHil m.
Q)
M
w.m mm
HERBERT KLEPPER
l
BY 'WILLIAM B. ABBOTT _
United States Patent O?lice
3,068,998
Patented Dec. 18, 1962
2
1
bracket and a pair of pulleys and a driven clutch member
at the other end of the distributor bracket. The cable is
then connected through a tension spring to the other end
of the slide. The clutch member is a part of a magnetic
clutch the driving member of which is powered from the
intermediate shaft of the machine. The clutch is ener
. gized just prior to the line of matrices being transported
to the upper transfer position to bring the slide and pusher
3,068,998
DISTRIBUTOR SHIFTER FOR LINECASTING
MACHINES
?
Herbert Klepper, Brooklyn, and William B. Abbott, Bald
win, N.Y., assignors to Mergenthaler Linotype Com
. pany, a corporation of New York
Filed Feb. 23, 1961, Ser. No. 91,152
14 Claims. (Cl. 199-33)
This invention relates to typographical machines such
as linecasting machines of the general organization repre
to the matrix receiving position where the slide is latched.
When the second elevator bar seats in the upper transfer
. position the latch is released and a tension spring con
sented in U.S. Letters Patent to O. Mergenthaler, No.
436,532, wherein circulating matrices are released from a
magazine in the order in which they are to appear in print
and then assembled in line with spacebands, the composed
nected between the slide and the ?xed distributor bracket
urges the slide toward the distributing mechanism where
by the matrices are delivered into the distributor box.
A buffer is provided to control the speed at which the
slide is moved toward the distributing mechanism by the
line transferred to the face of a mold, the mold ?lled with
tension spring. The matrices are delivered into the dis
molten metal to form a type ?bar or slug and the matrices
tributor box and then to the rotating distributor screws.
returned through a distributing mechanism to the maga
A circuit is provided to initiate rotation of the screws
zine from which they started while the spacebands are
returned to their own separate magazine or box. More 20 when the distributor slide starts its movement towards the
matrix receiving position. At the end of a short delay
particularly the present invention relates to an improved
mechanism for transferring the matrices from the second
after the last matrix falls from the distributor bar the cir
cuit is interrupted to deenergize themclutch and arrest
elevator bar to the distributing mechanism of the machine.
rotation of the distributor screws until matrices are once
Moreover, the invention also relates to an improved drive
mechanism for the distributing mechanism.
more delivered into the distributor box.
Heretofore, the matrices were transferred from the
second elevator bar by a distributor shifter which con
sisted of a slide that travels in a bracket attached to the
Features and advantages of this invention will be
gained from the ?foregoing and from the description of a
.
preferred embodiment thereof which follows.
?
'
In the drawings:
'
'
?distributor beam of the machine. The slide, which carries
FIG. 1A is a plan view of the left hand portion of the
a spring cushioned pusher aligned with the matrices to 30
distributing mechanism as viewed from the rear of the
be transferred, is connected by a spring link to the long
arm of a lever which is fulcrumed on a bracket of the
machine located near the main cam shaft. The short
arm of the lever is engaged by a small cam segment
?formed on the side of the mold turning cam. A spring
connected to the lever urges the shifter slide toward the
distributing mechanism while the cam moves the slide to
a position to engage the line of matrices. In operation
the cam is such as to actuate the distributor shifter just
before the second elevator seats the line of matrices in 40
machine;
?
FIG. 1B is a plan view of the right hand portion of the
distributing mechanism as viewed from the rear of th
machine;
.
of the machine;
FIG. 2B is an elevational view of the right hand portion
of the distributing mechanism as viewed from the rear
the upper transfer? position. Moreover, as soon as the
matrices are in position to be transferred the cam permits
of the machine.
the spring to urge the matrices to the distributing mech
anism where they are presented to the continuously rotat~
ing distributor screws.
Inasmuch as the distributor shifter is controlled in its
operation by a small cam that functions near the very end
of the machine cycle, it is clear that the cam operation
of the shifter is extremely abrupt. This, of course, can
mechanism;
lead to?excessive Wear of the cooperating parts particu 50
'
FIG. 2A is an elevational view of the left hand portion
of the distributing mechanism as viewed from the rear
'
FIG. 3 is a left side elevational view of the distributing
FIG. 4 is a sectional view taken along line 4-4 of
FIG. 1B;
FIG. 5 is a sectional view taken along line 5-~5 of
FIG. 1B;
-
?
FIG. 6 is a fragmentary view of the distributor shifter
slide;
*
FIG. 7 is a fragmentary view of the matrix pusher
carried. by the distributor shifter slide; and
? 1
larly under conditions of high speed operation. In addi
FIG. 8 is a schematic wiring diagram of the electrical
tion, the? long heavy lever of the shifter mechanism has
elements employed to control the distributing mechanism
proven too cumbersome for high speed operation for the
of this invention.
following reason. The momentum of this lever during
Withdrawal of the shifter slide from its spring-urged posi? 55 Reference is made to the drawings wherein the dis
tributor beam of a linecasting machine is shown by the
tion would oftentimes carry the matrix pusher beyond the
reference numeral 9. The beam is provided with a rail
point where it engages a new line of matrices, whereupon
10? on which the distributor shifter slide 11 is slideably
the spring would snap the mechanism back to engage the
mounted. The slide has a downwardly projecting arm 12
line of matrices with a considerable impact. This caused
undesirable jarring of the mechanism and matrices and 60 which ?carries a pusher element 13 that aligns with the
matrices 14 suspended from the second elevator bar 15
undue noise at the parts are brought into engagement with
and pushes them from the second elevator into the dis
each other.
tributor box 16 of the machine for distribution tov their
Thus, while the prior art mechanism is entirely satis
respective channels in the storage magazines. As shown
factory for general use, an improved mechanism is highly
desirable for the new high speed machines. It is, there 65 particularly in FIGS. 6 and 7 pusher element 13 is slide
ably supported on arm 12 by a pair of screws 17 which
fore, an object of this invention to provide such mach
pass through a slotted portion of element 13. A? tension
anism.
In carrying out the invention, there is provided the
spring 20 urges the pusher element leftwardly, but it is
usual slide and matrix pusher carried thereby. The slide
limited in its extreme position by the engagement of the
and matrix pusher are moved to a line receiving position 70 adjustable screw 21 and the arm 12.
by a wire cable connected at one end to the slide and
The distributor shifter slide is translated from its
trained over a pulley located at one end of the distributor
normal position abutting the distributing mechanism
3,068,998
3
4
na-ting the necessity of overcoming dampening forces dur
to a place on the remote side of the position where
the second elevator bar seats in the upper transfer posi
tion and back to its normal position by means now to
ing this move. The same clutch mechanism does, how
23 on shifter slide 11.
matrices, spring 32 remains active to continuously feed
ever, permit operation of the dampening device as slide
be described. The remote position of the matrix slide
11 returns to its normal position. In this manner the
will be referred to as the matrix receiving position for 5 matrices are smoothly shifted from elevator bar 14 to
convenience. A wire cable 22 is secured to the bracket
the distributing mechanism. During this transfer of
The cable is then trained over
pulley 24, pulley 25, the driven pulley 26 of an electro
magnetic distributor shifter clutch 27, pulley 30, and
the matrices through distributor 16 to the matrix lift
52 which functions in the conventional manner to deliver
back to bracket 23. The connection to bracket 23 is made 10 the matrices up to the distributor screws 53. The screws
through a tension spring 31 which maintains the cable
then feed the matrices along the distributor bar 54 until
taut so that it and the slide 11 may be driven through
the matrices drop therefrom into their respective channels
clutch 27. Another tension spring 32 extending between
in the storage magazine.
bracket 23 and a ?xed portion 33 of the distributor beam
The pulley 35 driven by belt 36 from the intermediate
urges the shifter slide to its normal position abutting the
shaft of the machine also rotates the driving element of an
distributing mechanism. In this position the slide actuates
electromagnetic distributor clutch 55. The driven ele
mechanical switch 34 for a purpose which will herein
after he described.
The power for translating the distributor shifter slide
11 against the force exerted by spring 32 is derived from
the intermediate shaft of the linecasting machine which
rotates pulley 35 through the intermediary of belt 36.
This pulley is rotating continuously and is secured to the
same rotating member 37 as is the driving member of
clutch 27.
Energization of the clutch is controlled by
a cam actuated switch which is adapted to be actuated
ment of the clutch is keyed to shaft 37 as is gear 57. Gear
57 engages gears 60 and 61 which are keyed, respectively,
to the shafts 62 and 63 of distributor screws 64 and 65.
A gear 66 keyed to shaft 62 engages the gear 67 keyed to
the shaft 70 of distributor screw 71. Thus it is ap
parent that the three distributor screws are positively
driven upon energization of clutch 55. An electromag
netic brake '72 is provided to act on shaft 37 and arrest
rotation of the distributor screws in the event such action
becomes desirable.
r >
just before the second elevator bar is seated in the upper
Control of the clutch 55 is effected by engagement of
transfer position.
the normally closed contacts of switch 34. These contacts
Slide 11 is normally in its normal position (FIGS.
are generally held in separated condition by shifter slide
1B ?and 2B) when the aforementioned cam actuated switch 30 11 when the slide is in its normal position adjacent the
is closed during the machine cycle. With this switch
distributing mechanism. However, as soon as shifter slide
closed, clutch 27 is energized and pulley 26 commences
11 moves towards the matrix receiving position, as pre
counterclockwise rotation as viewed in FIG. 3. This ro
viously described, the contacts of switch 34 engage to
tation causes that portion of cable 22 extending between
_ energize clutch 55 and initiate rotation of the distributor
pulleys 24 and 25 to move toward the latter pulley with
screws. Rotation of the distributor screws continues until
the result that slide 11 is moved against the force exerted
by spring 32 into the matrix receiving position where it
the shifter slide has reached its normal position to sepa
actuates switch 40.
As will be described hereinafter
rate the contacts of switch 34 and the last matrix fed to
the distributor screws has been delivered to its storage
with reference to the wiring diagram, this slide actuated
channel in the matrix magazine. The means whereby this
switch interrupts the energization circuit for the clutch 40 is accomplished will be more apparent after the wiring
27 thereby arresting the motion of the slide due to drive
diagram is described.
from the intermediate shaft. At the same time that switch
40 is actuated, or slightly before such actuation, a latch
41 is moved into position to restrain the return move
The clutch 55 is also deenergized under emergency con
ditions such as when a matrix becomes jammed on the
distributor screws. In such a case the lower front dis
45 tributor screw 65 is adapted to slide transversely in a di
ment of the slide under the urging of spring 32.
As slide 11 approaches its matrix receiving position,
rection away from the distributor clutch 55. In so doing
?nger 42 abuts beveled surface 43 of the latch 41 forcing
the latch toward the rear of the machine (FIGS. 1B and
3).
Latch 41 is slideably mounted on screws 44 but
the side wall '73 of gear 61 abuts lever 74 pivoting it about
pin 75 to permit switch 76 to move to its normal non
actuated position. Such movement of the switch de
constantly biased forward by spring 45. Thus, once 50 energizes clutch 55 and energizes brake 72 to quickly ar
projecting lug 42 of slide 11 moves past the latch, the
rest rotation of the distributor screws. Clearing of the
slide is held in matrix receiving position until the latch
jammed matrix allows distributor screw 65 to be re
is released. As will be shown, this is accomplished by
stored to its normal operating position whereupon switch
the second elevator bar as it seats in the upper transfer
position.
As the second elevator ascends and moves the elevator
bar 15 into position adjacent the distributor box 16 it re
76 assumes its actuated position to energize clutch 55
and deenergize brake 72. Switch 76 is also positioned to
be actuated by the channel entrance 77. If the channel
entrance is pivoted out of operating position it permits
leases latch 41 (FIG. 4). Elevator bar 15 abuts adjust~
switch '76 to be moved to a non-actuated position with
able screw 47 mounted on the depending ?nger 50 of
the same result as when distributor screw 65 actuates the
latch 41 thereby pushing latch 41 rearwardly against the 60 switch. Thus, unless channel entrance 77 is in its nor
force of spring 45. Once latch 41 clears lug 42, spring
mal operating position, the distributor screws will not
32 pulls slide 11 and the matrices engaged thereby to
be rotated.
ward the distributing mechanism (FIGS. 1B and 2B).
The operation of the apparatus will now be brie?y
Immediately switch 40 is actuated to prepare the circuit
65 summarized with particular reference to the wiring dia
controlling clutch 27 for subsequent energization during
gram of FIG. 8. It will ?rst be assumed that power is
connected to the leads 80 and 81. It will further be as
sumed that the normally engaged contacts SS of switch 34
are held in a separated condition by the action of shifter
substantially eliminates the jarring and noise experienced
slide 11 on the switch. In other words, the shifter slide
70
heretofore during high speed operation. With regard to
is in its normal position. Moreover, it will be assumed
the dampener 51, a standard one way clutch mechanism
that there is no matrix 82 on the distributor bar 54 so
is included therein. This clutch mechanism permits free
that there is no circuit between the bar and distributor
rotation of the pulley 24 when slide 11 is driven toward
screw 64. Under these conditions electronic control tube
the next machine cycle. A dampening device 51 is pro
vided on the shaft of pulley 24 to insure a smooth trans
fer of the matrices to the distributing mechanism. This
the matrix receiving position by clutch 27 thereby elimi
ECT will be conducting and the distributor relay DR
.5
3,068,998
?will ?be energized to separate contacts DRlvand to engage
6
the distributor signal lamp D6. Illumination of this lamp
to move the shifter slide to its matrix receiving position,
resilient means for returning said slide to its delivery
position and presenting the line of matrices to said dis
indicates that the distributor screws are not rotating.
As the linecasting machine nears the completion of a
tributing mechanism, and latching means for holding said
slide in its matrix receiving position against the force
contacts DR2. The latter contacts complete a circuit for
cycle of operations, and just prior to the carriage of
matrices to the upper transfer position by the second
4 of ?said resilient means, said latching means being re
leased by the ascent and seating of said second elevator
elevator, the switch actuated by a cam on the second ele
whereupon said resilient means returns said slide to its
vator cam is actuated to engage contacts CS. Engage~
matrix delivery position.
ment ?of these contacts completes a circuit to energize the 10
'2. A typographical casting machine according to claim
distributor shifter clutch 27. Energization of this clutch
1 wherein said resilient means comprises a tension spring
moves slide 11 towards its matrix receiving position. As
mounted between the machine frame and said shifter
the slide moves away from the distributing mechanism
slide whereby upon release of said latching means said
contacts SS of switch 34 assume their normally engaged
spring becomes operative to move the shifter slide and
condition to short out resistor R. Shorting out of this
the matrices to delivery position.
resistor decreases the voltage on the control grid of tube
3. In a typographical casting machine having a second
elevator movable between an upper matrix transfer posi
relay DR is energized. Consequently contacts DRl en
tion and a lower matrix transfer position and a distribut
gage and a circuit is completed to energize the distributor
ing mechanism, a distributor shifter mechanism for trans
clutch 55, thus initiating rotation of the distributor screws. 20 ferring matrices from said second elevator to said dis
ECT with the result that the tube ceases to conduct and
The distributor lamp DL is extinguished to indicate this
tributing mechanism comprising a shifter slide which
fact.
engages the line of matrices suspended on the second
When the distributor slide reaches its matrix receiving
elevator and pushes them into the distributing mecha
position it engages switch 40 to separate the contacts LS
nism, a drive clutch for operating said slide, means for
and deenergize clutch 27. .Atthe same ?time slide 11 is 25 energizing said drive clutch, a pulley and cable system
latched in this position by latch 41. The ascent of the
mounted between said clutch and said slide for moving
second elevator and the seating of the second elevator bar
said slide into matrix receiving position awaiting the
in the upper transfer position moves latch 41 to a non
ascent of said second elevator, separate means for de
latching position whereupon Spring 32 acts to pull slide 11
energizing said drive clutch when said slide reaches the
towards its normal position and transfer matrices from 30 receiving position, latching means for holding said slide
the second elevator bar to the distributing mechanism.
in the matrix receiving position until the second elevator
In the meantime contacts CS separate in preparation for
is seated in the upper transfer position, and resilient
the next cycle of operations.
means for returning said slide to its delivery position
and simultaneously presenting the line of matrices to
When the matrices are fed by the distributor box mech
anism to the distributor screws and bar an additional
circuit is completed to short out resistor R. The circuit
is traced through distributor bar 54, matrix 82 and dis
tributor screw 64. When the last matrix is fed through
said distributing mechanism.
4. In a typographical linecasting machine having a
second elevator movable between an upper matrix trans
fer position and a lower matrix transfer position and a
distributing mechanism for returning matrices to their
the distributor box, shifter slide 11 will have reached its,
normal position and engaged switch 34 to separate con
storage magazines, a distributor shifter for transferring
matrices from the second elevator to the distributing
tacts SS. However, it is only when the last matrix 82
drops from the distributor bar that both short circuits
mechanism comprising a sliding member for engaging
around resistor R are interrupted. At this time tube ECT
a line of matrices, yieldable means for biasing said mem
again begins to conduct and relay DR is energized to
ber from a matrix receiving position to a position ad
separate contacts DRl and interrupt the circuit for ener 45 jacent the distributing mechanism, means for moving
said sliding member from a position adjacent said dis
gizing clutch 55. The distributor screws, therefore, cease
tributing mechanism to the matrix receiving position,
to turn until the beginning of the next cycle of opera-tion.
clutch means for actuating said last named means, and
If during the travel of matrices on the distributor bar,
electrical means for controlling the operation of said
one of them became jammed so that distributor screw
71 was moved transversely to actuate switch 76, con 50 clutch means to move said sliding member to a matrix
receiving position when the second elevator is away from
tacts CD of the switch would have separated to deener
the upper matrix transfer position.
giZe distributor clutch 55 while switch contact BE would
5. A distributor shifter according to claim 4 wherein
have engaged to energize the distributor brake 72. The
the means for moving the sliding member to the matrix
latter contacts also complete a circuit to illuminate the
emergency stop lamp ESL.
55 receiving position comprises a ?rst pulley means to
It is contemplated that many changes and modi?ca
tatably secured to one end of the distributor bracket,
a second pulley means rotatably secured to the other
tions could be made to the apparatus described without
end of the distributor bracket, a wire cable trained over
departing from the spirit and scope of the invention and,
said pulley means and the driven member of the clutch
therefore, it is to be understood that the foregoing de
scription and the accompanying drawings are to be 60 means and secured at its opposite ends to the sliding
member, and means for driving said wire cable over
interpreted in an illustrative rather than a limiting sense.
What is claimed is:
said pulley means whereby said sliding member is trans
1. In a typographical casting machine having a sec
lated to the matrix receiving position.
ond elevator movable between an upper matrix transfer
6. A distributor shifter according to claim 5 including
position and a lower matrix transfer position and a 65 means for maintaining said wire cable taut so that the
distributing mechanism for returning matrices to their
driving means can translate the sliding member to the
matrix receiving position against the force exerted by
respective channels, a distributor shifter mechanism for
transferring matrices from said second elevator to said
the yieldable means biasing said sliding member to the
distributing mechanism comprising a shifter slide which
position adjacent the distributing mechanism.
engages the line of matrices suspended on the second 70
7. A distributor shifter according to claim 5 wherein
elevator and pushes them into the distributing mecha
said clutch means is an electromagnetic clutch the driv
nism, a pulley and cable system including a drive clutch
ing member of which is continuously rotated and where
for moving said slide into a matrix receiving position,
in the electrical means includes a switch actuated by a
cam on the main cam shaft of the machine for con~
means for operating the drive clutch when the second
elevator is away from the upper matrix transfer position 75 trolling energization of said clutch.
3,068,998
7
8
8. A distributor shifter according to claim 7 including
latch means for latching the sliding member in the
matrix receiving position.
13. In a typographical linecasting machine having a
distributing mechanism for returning matrices to their
storage magazine, said mechanism including a distributor
'
9. A distributor shifter according to claim 8 including
switch means for controlling deenergization ?of the clutch
after the sliding member has been latched in the matrix
box, a distributor bar and distributor screws, a drive
mechanism for the distributor screws including a clutch,
means responsive to the absence of matrices on the dis
receiving position.
tributor bar for disengaging the clutch to arrest the rota
10. A distributor shifter according to claim 8 including
tion of the distributor screws, and means responsive to
means responsive to the second elevator seating the line
the entry of a matrix into the distributor box for engaging
of matrices in the upper transfer position for releasing 10 the clutch to initiate rotation of the distributor screws.
said latch means to permit said sliding member to be
14. In a typographical linecasting machine having a
biased toward the distributing mechanism by the ?afore
said yieldable means.
7
_
distributing mechanism for returning matrices to their
storage magazine, said mechanism including distributor
s
p 11. A distributor shifter according to claim 10 in
screws, one of which is longitudinally movable when a
cluding a dashpot means for retarding the movement of 15 matrix becomes jammed on the screws, a drive mech
said sliding member toward the distributing mechanism.
anism for the distributor screws including an electrically
12. In a typographical linecasting machine having a
controlled clutch, electrical means responsive to longi
distributing mechanism for returning matrices to their
tudinal movement of the movable distributor screw for
storage magazine, said mechanism including a distributor
deenergizing said electrically controlled clutch to thereby
bar and distributor screws, a drive mechanism for the
distributor screws including a clutch, means for detecting
matrices on the distributor bar, and means responsive
arrest rotation of said distributor screws.
References Cited in the ?le of this patent
UNITED STATES PATENTS
to the absence of matrices on the distributor bar for ?
disengaging the clutch to arrest the rotation of the dis
tributor screws.
>
25
1,441,101
2,086,627
Letsch _______________ __ Jan. 2, 1923
Lynch ______________ __ July 13, 1937
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