US1713607A - Typewriting machine - Google Patents

Typewriting machine Download PDF

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Publication number
US1713607A
US1713607A US716492A US71649224A US1713607A US 1713607 A US1713607 A US 1713607A US 716492 A US716492 A US 716492A US 71649224 A US71649224 A US 71649224A US 1713607 A US1713607 A US 1713607A
Authority
US
United States
Prior art keywords
lever
carriage
plate
bar
shift
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
US716492A
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English (en)
Inventor
Wellington P Kidder
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.)
ROCHESTER IND Inc
ROCHESTER INDUSTRIES Inc
Original Assignee
ROCHESTER IND 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
Priority to FR591114D priority Critical patent/FR591114A/fr
Application filed by ROCHESTER IND Inc filed Critical ROCHESTER IND Inc
Priority to US716492A priority patent/US1713607A/en
Priority to GB26923/24A priority patent/GB234770A/en
Application granted granted Critical
Publication of US1713607A publication Critical patent/US1713607A/en
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
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J7/00—Type-selecting or type-actuating mechanisms
    • B41J7/02—Type-lever actuating mechanisms

Definitions

  • My invention relates to improvements in that form of typewriting machines having end t-hrust type bars.
  • One object of my invention is to combine toggle joint leverage pressure with impact lto vreduce noise, as compared with the ordinary hammer blow of ordinary machines.
  • Another object is to provide a more effective kick back for quickly returning the type to position of rest upon release of keys.
  • a further object is to provide a laterally central and more exact register of shift positions of carriage especially when f imprint very quickly follows shift.
  • Figure 1 represents an assembled side elevation of a machine embodying the invention partly in section through line A-A in Fig. 2 showing typebar act-ion in normal position of rest, and the carriage in lower position for Writing the lower case letters.
  • Figure 2 is a top plan view of the machine.
  • Figure 3 is a side elevation in section sim ⁇ ilar to that in Fig. 1 exceptwith a type bar ⁇ forward to impression position and carriage raised to capital shift position.
  • Figure 4 v is -a side elevation in section through line A-A of Figure 2 showing deytail of carriage in upper or figure shift position.
  • Figure 5 is a rear elevation detail of parts of my central shift stops.
  • Figure 6 is a plan of Figure 5.
  • Figure 7 is an end elevation partly in section through line A-A of Figure 5.
  • the'type heads are radially mounted and rest by gravity ona horizontal flat plate guide, common to them all, the direction of motion of each, converging to a 1924.
  • each type bar is laterally within and between the planes of the two sides of the'type heads, thereby mininiizing thev lateral space occupied and consequently the length of type bar. stroke required.
  • 3 ⁇ represents thetwo main side frames, 4 the rear cross member, 5 the intermediate cross member and 6 the front cross member, each preferably L- shape as indicated, the latter cross member adjacent to the key board.
  • These frame parts are riveted or spot welded together, substantially integral.
  • the radial slots, 9, (Fig. 2), preferably 28 in number, are equi-distant apart, each one in converging alignment with a common center, 10, at the printing point surface of the platen roll 12, the latter mounted in a vertically shiftable carriage to be later described.
  • Screw heads, 15A of the two screws, 15, are elongated'downward to receive a horizontal curved pivot rod, 19, in the arc ofa radius to the common center, 10.
  • each of the type bars, 23 is pivotally connected at 28 a swinging bell crank lever, 29, laterally guided in a slot of the radial plate, 7, and also in a companion slot directlybeneath it in plate, 17, the lower end of the bell crank lever, 29, pivot-ally mounted on'the curved pivot rod, 19.
  • a link, 30A Pivotally connected to one arm of the bell crank 29 at 39,' is provided a link, 30A, its lower end pivot-ally connected at 30B to a key lever, 31, pivotally connected at its rear end on a pivot rod, 32, secured in twobrackets b3 and 34, fast to rear cross member, 4, of the frame.
  • the front end of the key lever is provided with an ordinary linger key, 31A.
  • 28 k-ey levers and keys with 28 corresponding links, bell cranklevers and type bars, with three type characters on the rear end of each typel hai', printing 84 characters, with double vertical shilt of carriage, are provided.
  • a ledge, 29A On the bellcrank endof veach bell crank actuating. lever 29, is provided a ledge, 29A, which upon approaching position shown in Fig. 3, contacts with a tliin elastic curved metal wire rail, 36, the plan of which is shown in Fig. 2.
  • the ends of this rail are secured at 36A and 36B, in a rocker shaft, 37, mounted on pivots, 37A and 87B, fast in the side frames, 8.
  • On this rocker shaft is secured one end of a lever, 38, to the opopsitefree end of which is pivotally mounted one end of a pull spring 39, 'its opposite end acliored to .a stud 40, fast in one of the side frames, 3.
  • Fastto rocker shaft 37 at 38j is ⁇ placed a duplicate of lever 38 pivotally connected with rearwardly extending link 38B for actuating any convenient form of escapeinent mechanism forjthe carriage and for a ribbon feed, too common in other writing machines to need further reference.
  • I preferably support the paper carriage on an ordinary ball bearing racc way, the forward member, 4l, of which, having both a vertical and longitudinal'movement carrying the plat-en, 12, feed roll, 43, and other ordinary parts of a. paper carriage, too well known for further reference.
  • the rear supportingmember, 45 is provided with movement in a vertical plane only,
  • l provide a movable stop, 57 in the path ofthe lower bent end of plate 56. rlhis movable stop contacts at its upper edge with under side of bent end 55A of plate 55 aiidforms the register,
  • a slot5'5E (Fig. 5) is provided in bent plate 55, through which this movable stop plays'withclearance It is moved out of the way, in shifting to upper or tigure shift position, by means of a ligure shiftkey, 58, on front end of an offset Vbell crank lever,
  • the movable stop,57 is not removed from the path of 56 when registering the capital shift position (see Fig. For capital shift, merely the shift key, 47A is depressed. Pull spring 47B and a similar one for bell crank lever 29 return parts to normal on release of keys.
  • a typewriting machine comprising an end thrust type bar, plate means supporting and guiding said bar, a pivotally supported bell crank lever having an end pivotally connected with saidbar, vertically spaced plates provided with aligned slots receiving and guiding said lever, operating means for effecting an impression ymovement of said lever, and means including a pivotal support and a yieldable element thereon in the path of and normally spaced from the lever for partially retarding the impression movement of said lever 'and for effecting return movement thereof, vsaid means being normally spaced from and in the path of the lever whereby the initial movement of the latter toward the printing point is unretarded by said means.
  • VLA typewriting machine comprising an end thrust type bar, toggle mechanism for actuating said bar, a platen located in advance of the-limit of movement of said bar by said mechanism to afford a combination of toggle pressure with impact speed and ease of operation, anV operating member, a connection between said operating member and toggle mechanism adapted to operate the latter and a yieldable member normally spacedk from said toggle mechanism and adapted to be engaged by the latter when moving to advance the type bar toward the platen adapted to partially retard the impression movement of the toggle and for effecting return movement thereof.
  • a typevvriting machine comprising a frame, spaced guides upon the frame, a support yvertically kshiftable upon the guides, a
  • a typewriting machine comprising ⁇ a frame, a support shiftablel vertically upon the frame and having a platen carriage thereon, a pair of connected levers pivoted upon the frame and extending transversely of the carriage and having their rear ends directly connected with the support to effect raising of the same, one of the levers being extended to the front of the machine to provide an operating member for raising the support, lined and movable stops for the support, manually operable means for shifting the movable stop to clear the support, an end thrust type bar having vertically spaced printing characters thereon, toggle mechanism for actuating said bar andal key lever Aoperatively connectedivith the toggle mechanism.
  • a typewriting machine a frame, a platen carriage having a platen thereon, a support for said carriage adjustable vertically to different positions upon the trame, a type bar having spaced printing characters ttor cooperation with the platen in different positions of adjustment thereof, l operating means for said type bar, fixed and adjustable stops for said support, a lever for raising the support When the adjustable stop ,is in operating position and means including a second lever adapted upon initial operation to shift the adjustable stop andto subsequently operate the iirst mentionedlever whereby to raise said support.

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  • Accessory Devices And Overall Control Thereof (AREA)
  • Transmission Devices (AREA)
US716492A 1924-05-28 1924-05-28 Typewriting machine Expired - Lifetime US1713607A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR591114D FR591114A (enrdf_load_stackoverflow) 1924-05-28
US716492A US1713607A (en) 1924-05-28 1924-05-28 Typewriting machine
GB26923/24A GB234770A (en) 1924-05-28 1924-11-11 Improvements in or relating to typewriting machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US716492A US1713607A (en) 1924-05-28 1924-05-28 Typewriting machine

Publications (1)

Publication Number Publication Date
US1713607A true US1713607A (en) 1929-05-21

Family

ID=24878204

Family Applications (1)

Application Number Title Priority Date Filing Date
US716492A Expired - Lifetime US1713607A (en) 1924-05-28 1924-05-28 Typewriting machine

Country Status (3)

Country Link
US (1) US1713607A (enrdf_load_stackoverflow)
FR (1) FR591114A (enrdf_load_stackoverflow)
GB (1) GB234770A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631956A (en) * 1969-02-27 1972-01-04 Hyon Kyu Choi Multiple language typewriter with logogram capability
US4613247A (en) * 1982-07-26 1986-09-23 Fwm Enterprises, Inc. Multiple format keyboard

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631956A (en) * 1969-02-27 1972-01-04 Hyon Kyu Choi Multiple language typewriter with logogram capability
US4613247A (en) * 1982-07-26 1986-09-23 Fwm Enterprises, Inc. Multiple format keyboard

Also Published As

Publication number Publication date
GB234770A (en) 1926-02-11
FR591114A (enrdf_load_stackoverflow) 1925-06-29

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