US2221858A - Paper-supporting roll in typewriting or telegraph machines writing on paper strips - Google Patents

Paper-supporting roll in typewriting or telegraph machines writing on paper strips Download PDF

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Publication number
US2221858A
US2221858A US203498A US20349838A US2221858A US 2221858 A US2221858 A US 2221858A US 203498 A US203498 A US 203498A US 20349838 A US20349838 A US 20349838A US 2221858 A US2221858 A US 2221858A
Authority
US
United States
Prior art keywords
roll
shaft
paper
disc
typewriting
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
US203498A
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English (en)
Inventor
Beccio Giuseppe
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.)
Firm Ing C Olivetti & C S A
Firm Ing C Olivetti & Csa
Original Assignee
Firm Ing C Olivetti & C S A
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 Firm Ing C Olivetti & C S A filed Critical Firm Ing C Olivetti & C S A
Application granted granted Critical
Publication of US2221858A publication Critical patent/US2221858A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/06—Tape or page guiding or feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/02—Platens
    • B41J11/04—Roller platens

Definitions

  • the machine cannot be provided with the conventional paper abutting or bearing roll, but must have a roll with a flat supporting surface, such as on small anvils, against which the strip, unrolling from a bobbin and caused to advance step by step, may
  • the support In order to obtain a clean impression of the letters,the support must be resilient and slightly yielding, as are ordinary typewriting rolls covered by a layer of rubber; on the other hand, however, when the I the conditions of the roll being therefore better r and more eflicient than in usual typewriting machines, wherein the rubber of the rolleradto vancing by steps together with the paper wears off unevenly,in the known manner.
  • the attached drawing shows diagrammatically embodimentsof the inventionjand in which- 1 18, 1 is a front view of one embodiment of as the device showing the roll'and two elements transmitting, rotational and longitudinal displacementtosaid roll.
  • Fig. 2 is a front view of another embodiment of the device showing the roll and a single e1e-.
  • Fig. 3 is a partial'sectional view of the embodimentof Fig. land also includes the type bar and tape support.
  • the shaft 5 is supported by a frame 0.
  • Parallel tothe shaft 5 and mountedon the frame [is a shaft I guided at one end in a bearing 8 of the frame, whilst at the other end it is pivoted in a 8 slot milled in the side of the frame 6 and extending somewhat vertically so as to guide the shaft transversely, leaving it free to be displaced vertically under the action of a spring i0 extending between a pin II and shaft I, and carried by. 10 the latter so as not to hinder its rotation.
  • The"- shaft 1 has a central part It slightly thicker than the remaining portion and which is shagreened. This 'part l8. engages the periphery of the roll 4, thus pressing against the rubber layer.
  • a wobble disc I! provided. with a hub l3.
  • the bore of the hub is not perpendicular to the disc but is somewhat inclined, so that the disc I! inclines to the'axis of said shaft I and, by rotating with the latter, performs lo oscillatory or reciprocable movements.
  • the pulley l4 and the roll 4 coupled therewith are forced to perform a longitudinal dis- :5 placement sliding on the shaft 5.
  • the inclination-of the disc flange I2 is selected in relation to the length of the generatrices of the roll 4, so that the paperstruck by the type bar may always bear against the rubberized roll in, any position of its longitudinal" displacement.
  • the shaft I is rotated by a couple of bevel gears l5 and It, the latter being driven by a shaft I] which is caused to .turn intermittently by the same mechanism (not shown) which determines a the p gression of the paper strip.
  • shaft 1 is made to rotate duringthe interval between two strokes, remaining inactive at the instant of each stroke.
  • the pressure of the shagreened portion I8 of the shaft 1 against the ,roll4, being brought about by the spring [0, does not vary because of the-slight wearing off of the rubber layer and, therefore, the driving conditions are always constant.
  • the diameter of the disc flange-l2 must be such that the'latter should not touch the bottom of the groove so as not to prevent the pressure of the shagreened portion I8 against the rubber layer of roll 4.
  • the roll 4 constitutes with'respect to the type bars an element of the conventional roll.
  • the known curvature which is given to the types for allowing the same to engage perfectly with' the paper abutting surface is the same which is required in a normal typcwriting machine pro- 40 vided with a paper supporting roll carried on a carriage; it is possible, therefore, with no alteration either in the kinematic typewriting arrangement, or in the types mounted on the machine, to substitute the device hereinbefore described for the conventional carriage, thus changing from the typewriting on a. sheet to the typewriting on a strip of paper and vice-versa.
  • a device of the character described for use in typewriters and like machines comprising a roll, a shaft, said roll being freely rotatable and freely axially displaceable on said shaft, 2. grooved pulley adjacent said roll and. coupled therewith, a wobble ,disc frictionally engaging said pulley and means for intermittently driving said wobble disc, for imparting rotation and reciprocable movement to said roll.
  • a device of the character described for use in typewriters andlike machines comprising a. roll, a shaft, said roll being freely rotatable and axially displaceable on said shaft, a grooved pulley adjacent said roll and coupled therewith, a wobble disc frictionally engaging said pulley, the
  • said disc being aliquant with respect to the diameter of said roll, and means for intermittently driving said wobble disc, said disc imparting rotation and reciprocable movement to said roll.
  • a device of the character described for use .70 in typewriters and like machines comprising a rubberized roll, a first shaft, said roll being free- 1y rotatable and axially displaceable on said first shaft, a grooved pulley adjacent said roll and coupled therewith, a second shaft provided with a frictional surface opposite said roll and engaging said roll, a wobble disc on said second shaft for engagement with said pulley, and means for. intermittently driving; said second shaft, said disc imparting reciprocable movement to said roll, and said frictional engaging surface imparting rotation to said roll when said second shaft is driven by said driving means.
  • a device of the character described for use in typewriters and like machines comprising a rubberized roll, a first shaft said roll being freely rotatable and axially displaceable on said first shaft, a grooved pulley adjacent said roll and coupled therewith, a second shaft provided with a frictional surface opposite said roll and engaging said roll, a wobble disc adjustable on said second shaft for engagement with said pulley, the diameter of said disc being aliquant with respect to the diameter of said roll, and means for intermittently driving said second shaft, said disc imparting reciprocable movement to said roll, and said frictional engaging surface imparting rotation to said roll when said second shaft is driven by said driving means.
  • a device of the character described for use in typewriters and like machines comprising a frame, a first shaft fixedly supported on said frame, a roll freely rotatably and axially displaceable on said first shaft, means for rotatin and axially displacing said roll including a second shaft, frictional engaging means, and means for intermittently driving said second shaft, a portion of said frictional engaging means being positioned on said first shaft and coupled therewith, and the remaining portion of said frictiona1 engaging means being secured for rotation with said second shaft, and means connected to said second shaft for engaging the portions of said frictional engaging means with each other.
  • a device of the character described for use in typewriters and like machines comprising a rubberized roll, a first shaft fixedly supported on a frame, said roll being freely rotatable and axially displaceable on said first shaft, a grooved pulley adjacent to said roll and coupled therewith, a second shaft, means intermittently driving said second shaft, a wobble disc adjustable on said second shaft for engagement with said pulley, the diameter of said disc being aliquant with respect to the diameter of the groove of said pulley, said disc imparting rotation and reciprocable movement to said pulley and to said roll coupled therewith when said disc is driven by said means through said second shaft.
  • a device of the character described for use in typewriters and like machines comprising a frame, a roll, a first shaft fixedly supported on said frame, said roll being freely rotatable and axially displaceable on. said first shaft, a grooved pulley adjacent said roll and coupled therewith, asecond shaft, a wobble disc on said second shaft, means for intermittently imparting rotation to said second shaft, and resilient means connected to said second shaft for pressing the periphery of said wobble disc against the groove of the said pulley on said first shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
  • Handling Of Sheets (AREA)
US203498A 1937-08-05 1938-04-22 Paper-supporting roll in typewriting or telegraph machines writing on paper strips Expired - Lifetime US2221858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT500014X 1937-08-05

Publications (1)

Publication Number Publication Date
US2221858A true US2221858A (en) 1940-11-19

Family

ID=11272040

Family Applications (1)

Application Number Title Priority Date Filing Date
US203498A Expired - Lifetime US2221858A (en) 1937-08-05 1938-04-22 Paper-supporting roll in typewriting or telegraph machines writing on paper strips

Country Status (3)

Country Link
US (1) US2221858A (de)
DE (1) DE700983C (de)
GB (1) GB500014A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1027712B (de) * 1955-09-30 1958-04-10 Siemens Ag Anordnung zur Daempfung des Druckgeraeusches bei Fernschreibmaschinen

Also Published As

Publication number Publication date
DE700983C (de) 1941-01-06
GB500014A (en) 1939-02-01

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