US2683525A - Typographical casting machine - Google Patents

Typographical casting machine Download PDF

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Publication number
US2683525A
US2683525A US293575A US29357552A US2683525A US 2683525 A US2683525 A US 2683525A US 293575 A US293575 A US 293575A US 29357552 A US29357552 A US 29357552A US 2683525 A US2683525 A US 2683525A
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US
United States
Prior art keywords
rod
line
jaws
pressure
lever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US293575A
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English (en)
Inventor
Victor M Corrado
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mergenthaler Linotype GmbH
Mergenthaler Linotype Co
Original Assignee
Mergenthaler Linotype GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mergenthaler Linotype GmbH filed Critical Mergenthaler Linotype GmbH
Priority to US293575A priority Critical patent/US2683525A/en
Priority to GB14633/53A priority patent/GB728484A/en
Priority to NLAANVRAGE7306516,A priority patent/NL178739B/xx
Priority to NL178739A priority patent/NL88860C/xx
Priority to FR1080857D priority patent/FR1080857A/fr
Priority to CH309205D priority patent/CH309205A/fr
Priority to DEM11471U priority patent/DE1730649U/de
Priority to DEM18919A priority patent/DE948249C/de
Application granted granted Critical
Publication of US2683525A publication Critical patent/US2683525A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B11/00—Details of, or accessories for, machines for mechanical composition using matrices for individual characters which are selected and assembled for type casting or moulding
    • B41B11/52—Moulding or casting devices or associated mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
    • B41B11/00—Details of, or accessories for, machines for mechanical composition using matrices for individual characters which are selected and assembled for type casting or moulding
    • B41B11/38—Devices for aligning or clamping lines of matrices and space bands

Definitions

  • This invention relates to typographical casting machines and, more particularly, to Linotype" machines of the general organization represented in U. S. Letters Patent to O. Mergenthaler, No. 436,532, wherein circulating matrices and spacebands are composed in line and then delivered to a vertically movable transporter or first elevator, the elevator lowered to bring the line to casting position between a pair of vise jaws and in front of a mold, whereupon molten metal is forced into the mold against the faces of the matrices to form a type bar or slug, and finally the elevator raised to lift the line to transfer position preparatory to distribution of the matrices and spacebands.
  • the vise or line clamping jaws are mounted for horizontal movement toward and from each other in the cap portion of a vise frame and are operable separately or conjointly by a vertically movable rod which may be connected through the medium of cell crank levers to either the left or right jaw in quadding or to both jaws in centering.
  • the various operating parts of the quadding and centering mechanism are built into a housing detachably attached to the left-hand side of the vise frame and are described in detail in a pending application of L. Rossetto, Serial No. 183,033, filed September 2, 1950.
  • the vertical movements of the operating rod for the bell crank levers are controlled by a spring-operated cam-controlled member of the justification mechanism which completes two upward and downward operations during each machine cycle.
  • the first upward stroke of this justification member is utilized to permit the vertical rod to be raised by a comparatively light spring so as to move either or both vise jaws inwardly against a composed line positioned in the casting position, and the second upward stroke of said member is utilized to impart an additional line squeeze pressure to the jaws prior to the casting operation. Thereafter, and as the endwise pressure on the line is released, the line is lifted by the elevator from between the jaws and the jaws then restored to normal spread-apart position.
  • the above difiiculty is overcome by the provision of means for preventing the jaws from appreciably receding after the first operation of the justification member.
  • the justification lever opcrates a second time just prior to the casting peration.
  • the molten metal is forced into the mold and against the faces of the composed matrices as well as against the back surfaces of the vise jaws adjacent the ends of the composed line, the pressure exerted between the matrices and the vise jaws creating a seal to prevent the escape of molten metal.
  • the molten metal has a tendency to adhere to and build up on the clamping faces of the jaws, gradually forming small hard protuberances which, unless removed, will cause the production of imperfect type bars, damage the side walls of the matrices and give rise to other objectionable conditions.
  • This pressure has to be substantially reduced to allow the line to be removed from between the jaws, and the timing is such that the justification member begins its final downward travel in the machine cycle before the line is lifted from between the jaws. Hence, when the justification member descends, the pressure applied to the jaws through the control rod is removed and the jaws are free to yield, with the result that the desired wiping action is not achieved in quadding and centering operations.
  • supplementary means are provided to hold the jaws in contact with the line after casting until the line has been sufliciently lifted to achieve a wiping action.
  • Various devices have been heretofore proposed to achieve this wiping action in connection with quadding and centering attachments; see for example the clamping device described in the pending application of R. H. Turner, Serial No. 229,594, filed June 2, 1951.
  • the present invention provides a greatly simplified device and one which is rendered both operative and inoperative from the main cam shaft of the machine. Moveover, the present device is employed to overcome both of the above diificulties and thus performs a dual function.
  • Fig. 1 is a perspective view showing front and rear portions of a Linotype machine equipped with a quadding and centering attachment embodying the present invention
  • Fig. 2 is a circuit diagram of the control means for the instant clamping device
  • Fig. 3 is a top plan cross-sectional view of the control rod and the instant clamping device
  • Fig. 4 is a rear perspective view of the control switch and the actuating cam for the improved device.
  • Fig. 5 is a side elevation of the quadding and centering mechanism, showing in particular the manner in which the control rod is operated from the justification lever;
  • Fig. 6 is an isometric view of the pawls employed in producing the line squeeze on the jaws.
  • first elevator I the operation of which is controlled in the usual way by a cam I a on the main cam shaft A through lever connections I and I.
  • the elevator descends to position it between a lefthand jaw 2 and a right-hand jaw 3 in alignment with a slotted mold (not shown) preparatory to the slug casting operation.
  • the first elevator is raised to the upper transfer level and the composed line is shifted therefrom for distribution.
  • the two line clamping jaws 2 and 3 are movable toward and from each other and are operable by a vertically movable control rod 4 which is slidably mounted at its upper end in a bearing of a casting 5 within a housing 6.
  • the housing 6 is attached to the left side of the vise frame 7.
  • the control rod 4 is provided at its extreme upper end with an annular grooved collar 3 by means of which it can be selectively connected to either of two oppositely disposed bell crank levers 9 and it for quadding or to both for centering.
  • the bell crank lever 9 is connected to the left-hand jaw 2 by a horizontal link Ii, and the bell crank lever H3 is connected to the right-hand jaw 3 by a similar link I2. Both bell crank levers are pivotally mounted on the casting 5.
  • the inward or closing movement of the jaws during a quadding and centering operation is effected by the upward movement of the control rod 4, whereas the outward or return movement of the jaws is effected by the downward movement of the rod.
  • the upward jaw closing movement of the control rod is effected by means of a long fore-andaft lever I3 forming part of the well known justification mechanism.
  • the lever I3 is pivoted at its extreme rear end and is actuated in an upward direction by a powerful spring (not shown) under control of a cam I4 located on the main cam shaft A.
  • the downward movement of the lever I3 is likewise effected by the control cam I4.
  • the lever I3 is swung upwardly and downwardly twice in performing its regular justification function.
  • the justfication lever I3 has a forked or bifurcated front end portion presenting two arms, one arm serving to operate the justification bar, and the other arm I3 serving to control a spring-actuated rod (not shown) which operates, in a well known manner, a wedge-shaped clamping member for the left-hand jaw.
  • the arm I3 also has connected to it an extension casting 25 presenting a lower cam surface 25 and a top cam surface 25 (Fig. 5).
  • the cam surface 25 is adapted to engage an antifriction roller carried by a lever 26 pivotally mounted at 26 in the housing 6 and to thereby control its operation; while the cam surface 25 is adapted to engage another antifriction roller carried by a U-shaped lever 27, likewise pivotally mounted in the housing 6 at 21*.
  • the lever 26 is always urged upwardly by a long but not too powerful tension spring 28, but when the justification lever I3 is held in its normal or downward position of rest by the cam I4, the cam surface 25 maintains the lever 26 in a downward or inoperative position against the tension of the spring.
  • the levers 26 and 21 control the upward jaw closing and pressure applying movements of the vertical rod 4, and they do so through the medi um of a series of pawls 29, 30, 3
  • the operation of the pawl 29 is controlled from the lever 26 through motion multiplying links 29 and 29 the former link being pivotally connected at one end to the lower end of the pawl 29 and pivotally mounted at the other end in the housing 6, and the latter link being pivotally connected to the lever 25 and the link 29 near their pivots.
  • the U-shaped member straddles the rod 4 and is mounted on the housing 6.
  • the pawl Si is set into a hollowed out portion of the pawl 38, and both are pivotally connected to the U-shaped lever 27 adjacent its pivot 2'! so as to be moved bodily upward by the rise of the lever 21.
  • is fast to a short shaft 33 journaled in the arms of the lever 21, and the pawl an is pivotally mounted on this same shaft.
  • a spur 34 on the shaft 33, actuated by a spring 34 serves to rock the pawl 3
  • a spur 35 protruding from the pawl 30. and actuated by a spring 35*, serves to rock the pawl 30 into engagement with the rack 4 but this second spur is also provided with a set screw 35 which, in the normal position of rest of the parts, seats upon another ledge 6 of the housing 6 and prevents su h engagement.
  • the long fore-and-aft justification lever i3 is forced downwardly by the control cam is preparatory to the second justification.
  • the jaw closing rod 4, however, and of course the rack 4 although relieving the force initially exerted on the composed line, remain in their upward or operated position due to the balance of the systm of levers and the weight of the jaws. .
  • this second rise correspondin to the second and final justifieation in regular machine operation, and the pawls 29, 36 and 3! are operated in the same manner above described.
  • the improved clamping device consists of a brass friction stud l5, loosely set into a boring of the casting 5 and radially disposed in relation to the axis of the control rod a steel collar ll seated directly behind the stud, and a lever l8 pivotally mounted in the casting 5 and having a head portion 48 in operative engagement with. the collar ii.
  • the stud i6 is intended to frictionally engage the control rod when pressure is applied thereto by means of the pivotal movement of the lever 58, and the advance end of the stud is shaped to conform with the cylindrical contour of the control rod.
  • Th switch 2! depicted is of the normally open leaf-type switch and has a roller Zi attached to but insulated from one of the contacts. The switch is adapted to be closed at the desired times by two cam segments 23 and 23 properly located on the cam wheel 22.
  • the usual 110 A. C. voltage supply is first stepped down to 24- volts by a transformer T and then converted to 18 volts D. C. by a selenium rectifier R.
  • an arc suppressor 24 e. g., a selenium rectifier
  • a parallel circuit with the solenoid 2B is arranged in a parallel circuit with the solenoid 2B.
  • the mode of operation is as follows:
  • the first upward stroke of the justification lever l8 permits the light spring to raise the control rod 3 to close the operative jaw or jaws against the line.
  • the timing is such that while the spring pressure is thus exerted by the jaws on the line, the cam segment 23 closes the switch 2
  • the clamping pressure thus applied to the control rod, the jaws are maintained against the ends of the line and are prevented from backing away, even after the justification lever descends and the upward spring pressure on the control rod is removed.
  • the earn segment 23 is long enough to keep the switch 2!
  • a typographical casting machine the combination of a pair of line clamping jaws movable one toward the other in quadding, a vertically movable rod connectable to a jaw for eifecting its quadding movement, a member operable twice during each cycle of the machine, means controlled by said member in its first operation to effect the jaw closing movement of the rod and then release it and in its second operation to apply a line squeeze pressure to the rod in the quadding position of the jaw and then release the rod, and automatic supplementary means operable during each operation of said member to apply a temporary clamping pressure to the rod before each release thereof by the jaw closing and pressure applying means.
  • a combination according to claim 1 including timing means for the automatic supplementary means to maintain said clamping pressure on the rod until after the completion of each operation of the said member.
  • a pair of line clamping jaws a movable rod connectable to one of said jaws for quadding
  • a member operable twice during each machine cycle
  • means controlled by said member in its first operation to effect the jaw closing movement of the rod and then release it and in its second operation to apply additional pressure to the rod and then release it
  • automatic rod clamping means operable during the first operation of the said member before the first release of the rod and until the beginning of the second operation of the said member, and operable again during the second operation of the said member before the second release of the rod and until the composed line has been lifted partly from between the clamping jaws.
  • a typographical casting machine the combination of a pair of line clamping jaws, a movable rod connectable to one of said jaws for quadding, a member operable twice during each machine cycle, means controlled by said member in its first operation to effect the jaw closing movement of the rod and then release it and in its second operation to apply additional pressure to the rod and then release it, and automatic rod clamping means operable to prevent receding movement of the rod after its release in the first operation of the said member.
  • a combination as set forth in claim 10 including timing means for causing the automatic rod clamping means to operate again to prevent receding movement of the rod after its release in the second operation of said member.

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  • Materials For Photolithography (AREA)
  • Medicinal Preparation (AREA)
  • Jigs For Machine Tools (AREA)
  • Press Drives And Press Lines (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Continuous Casting (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
US293575A 1952-06-14 1952-06-14 Typographical casting machine Expired - Lifetime US2683525A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US293575A US2683525A (en) 1952-06-14 1952-06-14 Typographical casting machine
GB14633/53A GB728484A (en) 1952-06-14 1953-05-26 Improvements in or relating to typographical slug casting machines
NL178739A NL88860C (en)) 1952-06-14 1953-06-01
NLAANVRAGE7306516,A NL178739B (nl) 1952-06-14 1953-06-01 Stereo zend- en ontvanginrichting.
FR1080857D FR1080857A (fr) 1952-06-14 1953-06-04 Machine à fondre les lignes-blocs typographiques
CH309205D CH309205A (fr) 1952-06-14 1953-06-08 Machine à fondre les lignes-blocs typographiques.
DEM11471U DE1730649U (de) 1952-06-14 1953-06-12 Zeilenausfuell- und zeileneinmittvorrichtung fuer matrizensetz- und zeilengiessmaschine.
DEM18919A DE948249C (de) 1952-06-14 1953-06-13 Zeilenausfuell- und Zeileneinmittvorrichtung fuer Matrizensetz- und Zeilengiessmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US293575A US2683525A (en) 1952-06-14 1952-06-14 Typographical casting machine

Publications (1)

Publication Number Publication Date
US2683525A true US2683525A (en) 1954-07-13

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Application Number Title Priority Date Filing Date
US293575A Expired - Lifetime US2683525A (en) 1952-06-14 1952-06-14 Typographical casting machine

Country Status (6)

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US (1) US2683525A (en))
CH (1) CH309205A (en))
DE (2) DE1730649U (en))
FR (1) FR1080857A (en))
GB (1) GB728484A (en))
NL (2) NL88860C (en))

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949302A (en) * 1932-07-01 1934-02-27 Mergenthaler Linotype Gmbh Slug casting machine
US2051804A (en) * 1933-02-17 1936-08-25 Mergenthaler Linotype Gmbh Typographical slug casting machine
US2255254A (en) * 1940-08-03 1941-09-09 Mergenthaler Linotype Gmbh Slug casting machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE912815C (de) * 1951-06-02 1954-06-03 Mergenthaler Linotype Gmbh Schraubstock einer Matrizensetz- und Zeilengiessmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949302A (en) * 1932-07-01 1934-02-27 Mergenthaler Linotype Gmbh Slug casting machine
US2051804A (en) * 1933-02-17 1936-08-25 Mergenthaler Linotype Gmbh Typographical slug casting machine
US2255254A (en) * 1940-08-03 1941-09-09 Mergenthaler Linotype Gmbh Slug casting machine

Also Published As

Publication number Publication date
GB728484A (en) 1955-04-20
FR1080857A (fr) 1954-12-14
DE948249C (de) 1956-08-30
NL178739B (nl) 1958-03-15
CH309205A (fr) 1955-08-31
DE1730649U (de) 1956-09-27
NL88860C (en)) 1958-07-16

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