US2501264A - Stenographic machine - Google Patents

Stenographic machine Download PDF

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Publication number
US2501264A
US2501264A US674818A US67481846A US2501264A US 2501264 A US2501264 A US 2501264A US 674818 A US674818 A US 674818A US 67481846 A US67481846 A US 67481846A US 2501264 A US2501264 A US 2501264A
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US
United States
Prior art keywords
paper band
characters
machine
embossed
blind
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
US674818A
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English (en)
Inventor
Outer Marius Den
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Individual
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Individual
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Filing date
Publication date
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Publication of US2501264A publication Critical patent/US2501264A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/32—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing in Braille or with keyboards specially adapted for use by blind or disabled persons
    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/26—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for stenographic writing

Definitions

  • This invention relates to a shorthand-typewriter or stenographic-machine-which is particularly'adapted tobe used by blind people.
  • object of the present invention is to eliminate these drawbacks and to. provide a stenc- "graphic machine, the writing of which is easily “legible for blind as well as for seeing men.
  • Another object of the present invention is to provide a. stenographic machine especially adapted .to be used by blind men and producing a writing in embossed Latin characters.
  • a 'feature of the invention is the use of a so-called 'syllable-typewriter in which with a single operatingstroke the Latin characters constituting a syllable of a word may be simultaneously recorded, and which is provided with a keyboard, each key of which corresponds with onl one definite type, all the types of the machine making "their impressions on a paper band in ahorizontal row beside each other and each of them on a definite placein the width of the said paper band.
  • the types of the syllable-typewriter cooperate with the paper band in such a manner that, when --depressing the keys controlling the types, the writing appears on the paper band in legible :and palpable relief.
  • -A particular featureof the invention lies in the fact that'the blind man, in palpating "th embossedwriting, nee notdistinguish the-form and consequently "the nature of the characters, but it is only necessary for him, by feeling the elevations in the paper, to ascertain on what definite places of the paper'band-a character is to be found. Since in syllable-typewriters the several types always strike on the same unchangeable places'in the width of the paperband, the blind man, who knows already the whole keyboard by heart to enable him to "work with "the machine, only needs 'to know yet in which sequence and on which definite places the characters appear on the paper band.
  • the embossedcharacters only serve to make theblind man feel elevations on definite places of the paper band, the characters and the types, as .well as the whole machine may be executed in normal dimensions. Moreover, the embossed characters, in comparison with the usual embossed points for'blind type, present the great advantage that they are much more durable, i. e. that they do not disappear so rapidly from the paper. When using embossed points, one can hardly feel the elevations after a number of ,palpations or after having exerted a certain pressure on the paper, but the embossed characters,'according to the present invention, which constitute more or less a structural bond due to the embossed lines running in various directions, practically always remain equally well palpable.
  • the invention may be applied with particular advantage in syllable-typewriters comprisingonly by the fingers of the blind man, so that the de- *to the row ofpharacters.
  • syllable-typewriters comprisingonly by the fingers of the blind man, so that the de- *to the row ofpharacters.
  • the members cooperating with the paper band are formed by toothed or milled guiding wheels serving at the same time for feeding the paper band.
  • the paper band according to the invention may further be guided along a striplike member comprising a cavity or a mould cor responding with the row of characters and in which the types of the machine are struck when the keys are depressed.
  • Fig. 1 is a diagrammatic longitudinal section of the machine and shows a type-lever as well as a toothed guiding wheel for feeding the paper band.
  • Fig. 2 shows the operating mechanism for driving the toothed guiding wheels and feeding the paper band.
  • Fig. 3 is a view of a portion of the paper band, shown approximately in full size.
  • the syllable-typewriter illustrated in the drawing has a keyboard comprising 22 keys for characters and a special space key.
  • Each character key I is arranged at the end of a lever 2 rotatably mounted on a shaft 3 secured in the frame of the machine.
  • the other extremity of the lever 2 is actuated by a compression spring 4 keeping the lever in its inoperative position and pushing it against an abutment 5 of the frame.
  • the lever 2 carries the character type 6.
  • the types of the various type levers are arranged beside each other on a straight line and cooperate with a striplike member I provided with a .cavity ormould 8 corresponding with the row of characters and in which the types6 are struck when the keys I are depressed.
  • the member I is preferably made of tin or a similar soft metal in which, by hammering the character types, the
  • .shape of the said types is formed in low relief.
  • the paper band 9 which is guided, further to the rear, between a roller Ill and four spaced toothed guiding wheels II.
  • These guiding wheels II which serve to :form the separating lines I2 in the paper band 9 (vide Fig.3) and a ratchet wheel I3 are rigidly connected with a shaft I4 rotatably mounted in .the machine frame.
  • the teeth of the wheels II are preferably somewhat countersunk in the roller I0, so that the roller III presents four circumferential grooves corresponding with the four wheels I I.
  • This rod I8 is connected to a lever 20 rotatably mounted on a shaft I9 and actuating,
  • a controlling wheel 22 loosely mounted upon the shaft I4.
  • This controlling wheel 22 is provided with a pawl 23 which is preferably resilient and adapted to engage the teeth of the ratchet wheel I3.
  • the controlling wheel 22 is turned to the right against the action of a drawspring 24 and moves in the direction of the arrow shown in Fig. 2.
  • the pawl 23 then slides over the teeth of the ratchet wheel I3 and at the end of the rotating movement engages a tooth of the said wheel.
  • the controlling wheel 22 actuated by its spring 24 returns into its original position, whereby the pawl 23 causes the ratchet wheel I3 and consequently the shaft I4 to turn to the left.
  • the wheels II now pull the paper band forward in the direction of the arrows shown in Fig.- 1, thereby forming the embossed lines I2 in the paper.
  • The-lines I2 afford him a very eflicient orientation during the decipherment of the writing.
  • the characters need not be palpated by the blind man according to their shape, but it is sufiicient, when he feels at which places the paper shows an elevation.
  • each character is defined for the blind man by a single impression of palpation (which is realized by the small embossed character, in distinction to the Braille type, in which e. g. for the frequently used character n the blind man has already to assimilate 4 points, i. e. 4 impressions of palpation), and in consequence of the above mentioned method of reading with three fingers, which assures a reasonable distribution of the work over the said three fingers, the great advantage is obtained that each finger is only subjected to a small percentageof the totally required number of palpating impressions, thus avoiding the so-called dull-feeling (becoming insensible for impressions) and enabling the blind man to read much longer at a stretch.
  • the embossed writing according to the invention may be read by blind back face of the paper band, so as to form the characters in legible and palpable high relief on the front face of the said paper band, and means for stepwise feeding the paper band after each depression of the keys, said means comprising a set of guiding members with projections cooper,- ating with the back face of the paper band so as to form spaced lines in high relief on the front face and in longitudinal direction of the paper band.

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  • Printers Characterized By Their Purpose (AREA)
US674818A 1942-08-18 1946-06-06 Stenographic machine Expired - Lifetime US2501264A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL897480X 1942-08-18
NL2501264X 1942-08-18
NL618517X 1942-08-18

Publications (1)

Publication Number Publication Date
US2501264A true US2501264A (en) 1950-03-21

Family

ID=27351303

Family Applications (1)

Application Number Title Priority Date Filing Date
US674818A Expired - Lifetime US2501264A (en) 1942-08-18 1946-06-06 Stenographic machine

Country Status (3)

Country Link
US (1) US2501264A (enrdf_load_stackoverflow)
FR (1) FR897480A (enrdf_load_stackoverflow)
NL (1) NL59898C (enrdf_load_stackoverflow)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US212724A (en) * 1879-02-25 Improvement in type-writing machines
US306904A (en) * 1884-10-21 Yicente alonso de celada
US410628A (en) * 1889-09-10 Type-writing machine
US543342A (en) * 1895-07-23 grume
US1160665A (en) * 1914-12-21 1915-11-16 Charles Spiro Stenographic type-writer.
FR515484A (fr) * 1920-05-14 1921-04-02 Alfred Leroy Perfectionnement aux machines à sténographier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US212724A (en) * 1879-02-25 Improvement in type-writing machines
US306904A (en) * 1884-10-21 Yicente alonso de celada
US410628A (en) * 1889-09-10 Type-writing machine
US543342A (en) * 1895-07-23 grume
US1160665A (en) * 1914-12-21 1915-11-16 Charles Spiro Stenographic type-writer.
FR515484A (fr) * 1920-05-14 1921-04-02 Alfred Leroy Perfectionnement aux machines à sténographier

Also Published As

Publication number Publication date
NL59898C (enrdf_load_stackoverflow)
FR897480A (fr) 1945-03-22

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