US3802341A - Pressure assist for roller platen data recorder - Google Patents

Pressure assist for roller platen data recorder Download PDF

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Publication number
US3802341A
US3802341A US00316318A US31631872A US3802341A US 3802341 A US3802341 A US 3802341A US 00316318 A US00316318 A US 00316318A US 31631872 A US31631872 A US 31631872A US 3802341 A US3802341 A US 3802341A
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US
United States
Prior art keywords
platen
handle
base
lever
superstructure
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
US00316318A
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English (en)
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.)
DBS Inc
Original Assignee
Multigraphics Inc
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 Multigraphics Inc filed Critical Multigraphics Inc
Priority to US00316318A priority Critical patent/US3802341A/en
Priority to CA182,404A priority patent/CA1004907A/en
Priority to NL737314829A priority patent/NL146436B/xx
Priority to SE7315569A priority patent/SE391678B/xx
Priority to GB5551073A priority patent/GB1452755A/en
Priority to DE19732360894 priority patent/DE2360894C3/de
Priority to JP13973373A priority patent/JPS542122B2/ja
Priority to FR7345112A priority patent/FR2214261A5/fr
Priority to BE138992A priority patent/BE808775A/xx
Application granted granted Critical
Publication of US3802341A publication Critical patent/US3802341A/en
Assigned to DBS, INC., A MA CORP. reassignment DBS, INC., A MA CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AM INTERNATIONAL, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L19/00—Duplicating or printing apparatus or machines for office or other commercial purposes, of special types or for particular purposes and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L47/00—Details of addressographs or like series-printing machines
    • B41L47/42—Printing mechanisms
    • B41L47/46—Printing mechanisms using line-contact members, e.g. rollers, cylinders

Definitions

  • ABSTRACT A roller platen data recorder having a pivoted open- [52] US. Cl. .f. 101/269 able head, a pivoted platen drive level handle pp [51] Int. Cl B411 3/06 the head Pivot, with a Spring to resist handle 58 Field of Search 101 /269-274, ment, the improvement of a Wedge link serving as an 101 /45 2 7 297 2 anchor for the spring in place of the conventional machine frame anchor, the wedge link positioned to exert 56 References Cited an ever greater moment in the. direction of applied UNITED STATES PATENTS platen pressure as the handle is forced to pivot and the platen advances.
  • FIG. 1 This type of recorder is old and well known.
  • the handle load F is a direct result of a spring load P where the bearings for the platen are slides carried in slots in two side plates.
  • the handle is pivoted to the base, a driver arm for the platen is connected to receive drive force from the handle, and a preloaded spring connected to the driver arm and the frame for the side plates provides resistance which necessitates handle pressure, thus producing platen pressure.
  • R the center about the handle load
  • the invention resides in the utilization of the load producing spring to press a wedge, preferably an articulate'd two-part link, between the machine base and the pivoted superstructure upon pressure points which are located to induce a moment in the direction of platen load.
  • the object is to use a very light spring for ease of operation, and to employ the increasing spring load as the handle is activated as a dynamic wedge force, rather than to anchor the spring to a static machine part.
  • FIG. 1 is a perspective view, in an open position, of a data recorder embodying the principles of this invention.
  • FIG. 2 is the machine in a closed position prior to handle activation.
  • FIG. 3 is a top plan of the machine .with its decorative cover removed.
  • FIG. 4 is a vertical section taken along line 4-4 of FIG. 2.
  • FIG. 5 is the section of FIG. 4 with the platen actuated to the end of its print stroke.
  • FIG. 6 is a detail of the platen support as viewed along line 6-6 of FIG. 4.
  • FIG. 7 is a force vector analysis illustration of the drive linkage of this invention.
  • FIG. 8 is a schematic representation of a prior art device.
  • FIG. 9 is a table of applied force from wedge action
  • FIG. 10 is a chart of loads from two sources and the resultant applied platen load.
  • This new and improved data recorder comprises a base 10 with a pivoted head, which is referred to hereinafter as a superstructure. This term is believed to be more accurate in its descriptive characteristics.
  • the superstructure is built basically around two side plates 16 each of which has a longitudinal slot 18, which serves as a bearing race. This superstructure is pivoted upon the base about a crossbar pivot rod 19. A bearing 20 rides in each bearing race 18. A platen shaft 22 is carried by the two bearings 20 and supports an independently rotatable platen 23.
  • the superstructure 14 may be said to swing between a first position resting upon the base, as shown in FIG. 2, to a second position raised above said base, as shown in FIG. 1.
  • the two slots 18, which jointly define a bearing race for the bearings 20, may be said to define a path. The platen will operatein that path from a home position shown in FIG. 4, across the work area of the bed 11, and return to the home position.
  • Drive arms 25 are attached at one end to shaft 22 to drive the platen 23, (at one end) and captured by a vertically shiftable axis defined by bearings 26 and shaft 28 operating in two race slots 27 in a side plate 16. Shaft 28 extends between the bearings 26. There are two of the drive arms 25 in the preferred embodiment shown.
  • a handle 30 is provided for manual operation of the data recorder.
  • the operator places embossed printing members on the bed 11, together with whatever forms are to be used.
  • the machine is to be a ribbon head machine, a ribbon carrier is capable of being built into the head. More often, self-contained form sets are employed which do not require an ink ribbon. Then, the operator closes the head superstructure to the position shown in FIG.'2, and presses downwardly on the handle 30. It is at this moment that the operator will notice the extraordinary differences between the prior art devices and the present invention.
  • the prior art devices will require 30 to 35 pounds of pressure to produce a satisfactory print, whereas this invention will require about half that pressure and yet produce a more uniform and satisfactory print along the entire length.
  • a lever wedge 33 is employed to produce a very large wedge force in proportion to an applied load tending to straighten the bow.
  • a one-piece spring steel band is feasible, but a two-piece structure is easier to produce and operate.
  • two links 34 and 35 are connected as articulated levers.
  • the levers are connected at one end to the base by a pivot 36, and are connected to the superstructure side plates by a rod 37 extending between the side plates.
  • the rod 37 is located at a position above the base and advanced in the direction of the path of the platen. The preferred position is somewhat above the actual pair of bearing race slots 18.
  • the articulated levers 33 have an angulation approaching very close to a straight line 180 angle.
  • the very slight angulation which is not exact in its requirements, produces an extremely great resultant force on the pivot points 36 and 37, for a relatively slight force on the apex directed to the direction which would urge the articulated lever to a 180 condition.
  • pivot 36 is located on the side of pivot 19 opposite the location of the printing bed. If the pivot were located over pivot 19 or 33 forward thereof, a force directed against the apex of the lever 33 would act as a lifting device and open the head.
  • An attachment bar 38 carried by the drive arm 25, and a hook 39 on the link 34 provide attachment points for a spring 40.
  • Bar 38 also provides a connection for a coupling arm 39 connecting lever 30 to arms 25.
  • Spring 40 is preloaded even in the relaxed condition shown in FIG. 4, and as the handle 30 is depressed for the purpose of printing, the spring is extended and the force accentuated. In this way, as the platen advances across the bed in the printing operation, the force of the handle 30, which originally produced a considerable downward force through its pivot 41, gradually diminishes as the handle pivots. However, a moment is created which acts to press the superstructure to the base with an ever increasing force through the action of the spring 40 on lever wedge 33. Calculations can be made to establish the degree of such useful reaction.
  • a full line 45 in the upper corner of the chart illustrates the total platen load of handle pressure plus calculated toggle pressure as achieved by this invention.
  • the toggle platen load as calculated is diagramed as line 46.
  • a broken line 47 between the two full line graph line indicates the force of the platen in prior at practice and the drastic fall-off of platen pressure in a device of this nature without the use of the articulated lever assist. Note that the pressure load drops considerably below that which is considered to be sufficient for a satisfactory printout of pressure release forms.
  • the line 45 therefore, represents the present invention results. This chart cannot properly represent the great operator advantage of greatly reduced manual pressure required to achieve the useful line 45 results.
  • a data recorder having a base and a superstructure pivotally mounted on said base by a pivot, and said superstructure extending over said base, the superstructure having a roller platen and a lever handle for driving said platen in a path from a home position over said base in a first direction to a terminus and return in the opposite direction to said home position, the improvement in a means to increase applied force from said lever handle to the platen in comparison to the drive force applied to said handle, comprising;
  • a lever wedge means having a generally angulated configuration with an apex, said lever wedge means having a first end attached to said base on the side of said pivot opposite said platen path and extending upwardly from the base and laterally to a position terminating in an attachment to said superstructure at a position over said path; drive means including said handle for said platen, said handle being pivotally carried by a pivotal mount on said superstructure and having a yieldable tie member extending from the apex of said lever wedge means to said drive means, said tie member attached to said platen drive means by an attachment means located at a position removed from the pivotal mount of said handle, said attachment means located to swing away from the lever wedge means as the handle is pivoted in the platen drive act, whereby driving said platen by pivoting said handle causes an increasing pressure to the apex of said lever wedge means in a direction tending to straighten said lever wedge means, thereby forcing the roller platen against said base.
  • lever wedge means being con- 0 structed of two links articulated by a pivot joint
  • said tie member is a spring connected between said coupling link and lever wedge means.

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  • Handling Of Sheets (AREA)
  • Common Mechanisms (AREA)
  • Handling Of Cut Paper (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US00316318A 1972-12-18 1972-12-18 Pressure assist for roller platen data recorder Expired - Lifetime US3802341A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00316318A US3802341A (en) 1972-12-18 1972-12-18 Pressure assist for roller platen data recorder
CA182,404A CA1004907A (en) 1972-12-18 1973-10-02 Pressure assist for roller platen data recorder
NL737314829A NL146436B (nl) 1972-12-18 1973-10-29 Drukinrichting.
SE7315569A SE391678B (sv) 1972-12-18 1973-11-16 Dataupptecknande anordning
GB5551073A GB1452755A (en) 1972-12-18 1973-11-29 Printing machines
DE19732360894 DE2360894C3 (de) 1972-12-18 1973-12-06 Handdruckvorrichtung zum Abdrucken von, insbesondere geprägten, Druckzeichenträgern
JP13973373A JPS542122B2 (ja) 1972-12-18 1973-12-17
FR7345112A FR2214261A5 (ja) 1972-12-18 1973-12-17
BE138992A BE808775A (fr) 1972-12-18 1973-12-18 Enregistreur de donnees a rouleau presseur porte-cliche

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00316318A US3802341A (en) 1972-12-18 1972-12-18 Pressure assist for roller platen data recorder

Publications (1)

Publication Number Publication Date
US3802341A true US3802341A (en) 1974-04-09

Family

ID=23228532

Family Applications (1)

Application Number Title Priority Date Filing Date
US00316318A Expired - Lifetime US3802341A (en) 1972-12-18 1972-12-18 Pressure assist for roller platen data recorder

Country Status (8)

Country Link
US (1) US3802341A (ja)
JP (1) JPS542122B2 (ja)
BE (1) BE808775A (ja)
CA (1) CA1004907A (ja)
FR (1) FR2214261A5 (ja)
GB (1) GB1452755A (ja)
NL (1) NL146436B (ja)
SE (1) SE391678B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107839364A (zh) * 2017-10-17 2018-03-27 珠海思格特智能系统有限公司 可调整力矩的章体驱动装置及调整方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5751890Y2 (ja) * 1977-04-12 1982-11-11
GB1600381A (en) * 1977-04-20 1981-10-14 Data Card Uk Ltd Hectographic printing machines
JPS5818766U (ja) * 1981-07-31 1983-02-04 蛇の目ミシン工業株式会社 インプリンタにおける印刷ベ−スの構造

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664819A (en) * 1949-08-24 1954-01-05 Addressograph Multigraph Printing machine
US2692555A (en) * 1949-08-24 1954-10-26 Addressograph Multigraph Ribbon inking means for sales slip imprinting machines
US2746388A (en) * 1952-07-28 1956-05-22 Addressograph Multigraph Inking roller for an imprinting means
US3221653A (en) * 1962-10-15 1965-12-07 Safeguard Corp Open throat bed and cylinder imprinting machine
US3447458A (en) * 1966-05-25 1969-06-03 Farrington Business Mach Printing mechanism with traveling cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664819A (en) * 1949-08-24 1954-01-05 Addressograph Multigraph Printing machine
US2692555A (en) * 1949-08-24 1954-10-26 Addressograph Multigraph Ribbon inking means for sales slip imprinting machines
US2746388A (en) * 1952-07-28 1956-05-22 Addressograph Multigraph Inking roller for an imprinting means
US3221653A (en) * 1962-10-15 1965-12-07 Safeguard Corp Open throat bed and cylinder imprinting machine
US3447458A (en) * 1966-05-25 1969-06-03 Farrington Business Mach Printing mechanism with traveling cylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107839364A (zh) * 2017-10-17 2018-03-27 珠海思格特智能系统有限公司 可调整力矩的章体驱动装置及调整方法
CN107839364B (zh) * 2017-10-17 2019-12-03 珠海思格特智能系统有限公司 可调整力矩的章体驱动装置的调整方法

Also Published As

Publication number Publication date
DE2360894B2 (de) 1976-08-19
FR2214261A5 (ja) 1974-08-09
BE808775A (fr) 1974-04-16
NL146436B (nl) 1975-07-15
CA1004907A (en) 1977-02-08
NL7314829A (ja) 1974-06-20
GB1452755A (en) 1976-10-13
JPS542122B2 (ja) 1979-02-02
DE2360894A1 (de) 1974-07-11
JPS4988619A (ja) 1974-08-24
SE391678B (sv) 1977-02-28

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AS Assignment

Owner name: DBS, INC., A MA CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AM INTERNATIONAL, INC.;REEL/FRAME:003979/0673

Effective date: 19820325