US1689283A - Stenographic machine - Google Patents

Stenographic machine Download PDF

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Publication number
US1689283A
US1689283A US169380A US16938027A US1689283A US 1689283 A US1689283 A US 1689283A US 169380 A US169380 A US 169380A US 16938027 A US16938027 A US 16938027A US 1689283 A US1689283 A US 1689283A
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US
United States
Prior art keywords
levers
spacing
strips
members
abutment
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
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US169380A
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English (en)
Inventor
Grandjean Marc
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STENOTYPE GRANDJEAN
Original Assignee
STENOTYPE GRANDJEAN
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Filing date
Publication date
Application filed by STENOTYPE GRANDJEAN filed Critical STENOTYPE GRANDJEAN
Application granted granted Critical
Publication of US1689283A publication Critical patent/US1689283A/en
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Expired - Lifetime legal-status Critical Current

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    • 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

  • the present invention has for its object improvements in stenographie machines with a view of simplifying the constructlon and lthe assembling, and of simultaneously regulating the force of the stroke in all the keys, and of deadening the noise which they produce.
  • the aggregate of the said guiding plates forms a device which may be readily and economically constructed and which offers a great precision.
  • the guiding device is advantageous in many respects as compared with the comb-shaped elements which have hitherto been employed to guide the key levers. ⁇ A
  • the said key levers are returned to the inoperative p osition by springs which are mounted on a common pivoting element which is provided with an abutment for the levers; said abutment, which limits the upward stroke of the levers, consists of a cylinder of wood or other non-metallic substance which is covered with a suitably striated rubber sheath.
  • FIG. 1 is a side elevation of the keyboard
  • Fig. 2 is a. plan view, with parts broken away.
  • Fig. 3 is a cross section on the line 3-3 of Fi 2.
  • said training keyboard comprises, like the regular keyboard, 21 keys 1 mounted upon the levers 2 which are disposed fanwise and are pivoted to an axle 3 extending through a sultable guiding device which 1s disposed at the rear of the keyboard.
  • the said device rises two angle braek y ets 4 which are held. y four screwthreaded rods 5 and 5", 6 and 6l and by nuts, and also two sets of spacing pieces between which are disposed the strips or blades 9 which may consist of hoop iron and form ⁇ partltions.
  • the spacing ieces 7 and 8 have a thickness which very s ightly exceeds that of the levers 2, so as to maintainsuitable spaces be- ⁇ bar 12a mounted on the rod 6, it
  • a strap 10 consisting for examp e of pressed wrought iron, which can be pivotally mounted on the rod A5 since it is pierced with the slots; 11 for the insertion of the rod 5.
  • 'lhe strap 10 is braced at the front part, on the side next the keyboard, by a cast iron cross-piece 12 pierced with apertures for the insertion of the springs 13 which are engaged in the recesses formed between the strips 9 and which bear upon the'key levers in such'manner as to hold them in the raised position.
  • the outer ends of the springs are bent at right angles and are di osed in a set of parallel grooves which are grmed by the casting process, together with the cross-piece 12; these ends are held in the grooves by the which is screwed to the cross-piece 12.
  • the lower abutment for the levers consistsof an axle 16 of steel or the like which is covered by a sheath of smooth rubber 17 the said abutment is disposed on a member 18 analogous tothe member 10 and 'is pivotally being provided for this purpose with slots 19 by which it is engaged upon the rod 6, and I can thus easily regulate the stroke of the levers in the down-h 4ward direction when the keys are pressed.
  • the keyboard thus formed is contained in a case 20 and is secured thereto by a plate 21 .mounted on the angle brackets 4.'
  • the said keyboard possesses numerous advantages over those in current use upon stenolll) graphic machines. Due to the guiding device for the levers as thus constructed, I dispense with the combs-usually four in number-which are employed in the machines to guide the levers at the top and bottom, and at several points upon their length, this arrange- Y ment being diicult to assemble and adjust.
  • the combs With the use of such combs as guides, the combs must be adjusted tooth by tooth to provide for the free motion of the levers without friction, but in my said guiding device no such adjustment is necessary, and the pieces may be manufactured in standard types.
  • the force of the stroke is adjusted at the same time for all the levers, due to the mounting of all the springs upon the cross-piece 12 of the member 10; the springs are all made of the proper length, and consist for instance of piano wire, and if they are given the proper shape by means of al special tool outlit, the proper force of the stroke in a given keyboard can be obtained in a single operation by raising or lowering the cross-pieee 12.
  • a wood or like cylinder 14 covered with a rubber sheath 15 I ani enabled to obviate all noise, inasmuch as the ascending lever will meet only with a relatively elastic portion, and since the vibration passes through various non-metallic substances, vit will be reduced and not increased. For this reason, the noise is wholly or partially eliminated.
  • the upward and downward stroke of the levers is regulated-iii a very simple manner by the pivoting of the respective members 1() and 18 in either direction.
  • the lower abutment for the levers may have the same construction as the upper abutment.
  • the co/inbi-b nation of key levers, axles having the said levers pivotally mounted thereon means fon guiding the said levers in the vicinity of the said axles, said means comprising strips forming long walls between which the said key levers are engaged, and spacing members between said strips for properly spacing the latter, the spacing of the said strips slightly exceeding the spacing of the said' levers, two angle brackets between which are disposed in a single device the said strips and spacing members, and screwthrea'ded rods extending through the said strips and spacing members whereby the latter will be suitably maintained in the assembled position.
  • abutment provided on each side of the said members and serving t0 limit the stroke of the said levers in the upward and downward directions
  • said abutment consist- .guiding the said levers in the vicinity of the sa1d axles, sa1d means comprising strlps forming long walls between which the sa1d key levers are engaged, and spacing members between the said strips for properly spacing the latter, the spacing of the said strips slightly exceeding the spacing of the said levers, two angle brackets between which are disposed in a single device the said strips and spacing members, screwthreaded rods extending through the said strips and spacin members whereby the latter will be suitabIy maintained in the assembled position, two members pivoting on either side of the said levers, 'an abutment provided on each of the said members and serving to limit the stroke of said levers in the upward and downward directions, and reaction springs controlling the said levers, the member supporting the said abutment being adapted to carry

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  • Electrophotography Configuration And Component (AREA)
US169380A 1926-03-16 1927-02-18 Stenographic machine Expired - Lifetime US1689283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1689283X 1926-03-16

Publications (1)

Publication Number Publication Date
US1689283A true US1689283A (en) 1928-10-30

Family

ID=9680218

Family Applications (1)

Application Number Title Priority Date Filing Date
US169380A Expired - Lifetime US1689283A (en) 1926-03-16 1927-02-18 Stenographic machine

Country Status (2)

Country Link
US (1) US1689283A (fr)
FR (1) FR612812A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5826992A (en) * 1992-05-19 1998-10-27 Metamdrfyx, L.L.C. Ergonomic keyboard with wrist support

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5826992A (en) * 1992-05-19 1998-10-27 Metamdrfyx, L.L.C. Ergonomic keyboard with wrist support
US6042282A (en) * 1992-05-19 2000-03-28 Metamorfyx, L.L.C. Ergonomic keyboard
US6467979B2 (en) 1992-05-19 2002-10-22 Metamorfyx Ergonomic keyboard
US20030035677A1 (en) * 1992-05-19 2003-02-20 Hernan Camacho Ergonomic keyboard
US6840690B2 (en) 1992-05-19 2005-01-11 Metamorfyx Ergonomic keyboard
US7507043B2 (en) 1992-05-19 2009-03-24 Metamorfyx Ergonomic keyboard

Also Published As

Publication number Publication date
FR612812A (fr) 1926-11-02

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