US1380788A - Type-bar mechanism - Google Patents

Type-bar mechanism Download PDF

Info

Publication number: US1380788A
Authority: US; United States
Prior art keywords: type; sub; lever; levers; key
Prior art date: 1919-04-16
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

US366648A

Other languages

English (en)

Inventor

Etheridge Herbert

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.)

BAR LOCK TYPEWRITER Co LT

BAR-LOCK TYPEWRITER COMPANY Ltd

Original Assignee

BAR LOCK TYPEWRITER Co LT

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.)

1919-04-16

Filing date

1920-03-17

Publication date

1921-06-07

1920-03-17 Application filed by BAR LOCK TYPEWRITER Co LT filed Critical BAR LOCK TYPEWRITER Co LT

1921-06-07 Application granted granted Critical

1921-06-07 Publication of US1380788A publication Critical patent/US1380788A/en

1938-06-07 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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

This invention relates to type-bar mechanism ior typewriters or" the kind wherein the type bars and sublevers are carried upon a movable segment, and the sub-levers have their one end connected to the type-bars, and their other ends connected with the keyrs by means of connecting links, the principal object of the invention being to improve the relative arrangement of the members the action, wherein the submounted in an improved manner. Another object is to provice an improved mounting for the sub-levers.
Fig. 2 is a'rear elevation of some of the parts shown in Fig. 1.
the type-bar segment is shown at A, one of the bars only being shown at B in Fig. l, but three being indicated 'in Fig. 2.
the type-bars are all formed from identical blanks as is commonly done, the type-carrying ends being adjusted to take account ofthe radial disposition of the bars and yet present the type in proper vertical relation to the platen.
Sub-levers l) are supported upon a frame C having the shape of an inverted yoke, to the upper end of whose limbs the segment A is secured, and whose weblike lower portion C the sub-levers D are carried.
the pillars are arranged on the web in groups of four, there being four rows of keys in the bank, one such group being inclosed in the dotted line 0 in ig. 2.
Each pillar is split in its forwardly projecting end to receive and guide a sub-lever between the jaws thus formed, and each sub-lever is carried by a pivot-pin l traversing the jaws and the sub-lever.
the base of each pillar is received in a circular recess E countersunk in the face of the web and is held in position by a screw E passed through from the back of the web and threaded into the base of the pillar.
each sub-lever engages the type-bar with a pinan d-slot connection at B and each sub-lever is here bent as shown most clearly at D in Fig. 2, so that the end D of the sub-lever is radial to the segment and thus properly alined to the end of the type-bar.
end the sub-lever is bent as indicated at D to bring theseends parallel to one another thus enabling the sub-levers to be all connected to their key-levers G by links F that are parallel to one another.
the key-levers G are pivotally hung at G so that the links F are thrust members.
the holes in the web C for the screws E are preferably made a little large and the recesses E also made a little large, in order to allow slight lateral adjustment of the pillars E upon the web in a direction at rightangles to the length of the pillar.
This enables the pivotal point of each sub-lever to be individuallyadjusted during assembling and rotational movement of the pillar about its longitudinal axis enables the direction of the pivotal axis to be nicely adjusted and with ease. All the sub-levers may be thus mounted and adjusted in relation to their type-bars and. the frame C carrying these parts he then placed in position in the machine.
the object or. the arrangement in rows of the key-lever ends of the sub-levers is to enable them to be connected to the key-levers by links of which the ends attached to the key-levers do not rise and tall but of which the ends attached to the sub-levers do rise and fall and in such a way as not to occasion movement of the type-bars.
the slight tendency for the links to exert a pull or thrust during the shifting movement may be taken up by the necessary slackness of the various pivotal points or may be nulified by the normal position of the links being as much below the horizontal as they are above the horizontal when in the shifted position.
the sublever is straight, that is, the points of pivoting are approximately on one straight line
the arrangement of the key-levers, sublever, the connecting link between the keylever and the sub-lever, and the type-bar is such that when the latter is in the inoperative position, a line passing through the pivotal point G of the key-lever and the point at which the link is connected to this lever, will lie approximately parallel to a line passing through the pivotal points of the sub-lever with the link and with the typebar respectively, and that a line drawn from the face of the type through the point of pivoting B of the type-bar to the sub-lever will be approximately parallel. to the link.
the point on the key-lever and the point on the sublever selected for their operative connection with one another are. so positioned that the line of thrust of the key-lever is approximately-at right-angles to the virtual arm of the sub-lever when the parts are at rest.
a typewriting machine comprising a segment, and a plurality of independently removable type actions detachably mounted thereon, a plurality of independently adjustably pivots mounted on the frame of the machine, each of said actions comprising a vertical sub-lever removably mounted on one of said pivots and detachable therefrom independent of the other sub-levers, a normally horizontal type bar hung on said segment, and readily detachable therefrom, said type-bar being pivotally connected to the upper end of the sub-lever, a key lever removably hung on the frame of the machine as to be readily removable therefrom and a horizontal link pivotally connected at the front end to said key lever and at the rear end to said sub-lever, whereby each type action can be assembled and adjusted in the machine and removed therefrom independently of the others, substantially as de scribed.

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Mechanical Control Devices (AREA)
Accessory Devices And Overall Control Thereof (AREA)

US366648A 1919-04-16 1920-03-17 Type-bar mechanism Expired - Lifetime US1380788A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB9758/19A GB147287A (en)	1919-04-16	1919-04-16	Improvements in or relating to type-bar mechanisms

Publications (1)

Publication Number	Publication Date
US1380788A true US1380788A (en)	1921-06-07

Family

ID=33484765

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US366648A Expired - Lifetime US1380788A (en)	1919-04-16	1920-03-17	Type-bar mechanism

Country Status (4)

Country	Link
US (1)	US1380788A (de)
DE (1)	DE358203C (de)
FR (1)	FR512535A (de)
GB (1)	GB147287A (de)

1919
- 1919-04-16 GB GB9758/19A patent/GB147287A/en not_active Expired
1920
- 1920-03-17 US US366648A patent/US1380788A/en not_active Expired - Lifetime
- 1920-03-29 FR FR512535A patent/FR512535A/fr not_active Expired
- 1920-04-07 DE DE1920B0093508 patent/DE358203C/de not_active Expired

Also Published As

Publication number	Publication date
DE358203C (de)	1922-09-07
GB147287A (en)	1920-07-16
FR512535A (fr)	1921-01-25

Publication	Publication Date	Title
US1380788A (en)	1921-06-07	Type-bar mechanism
US1356652A (en)	1920-10-26	Typewriting-machine
US1181972A (en)	1916-05-02	Type-writing machine.
US777071A (en)	1904-12-13	Type-writing machine.
US1322676A (en)	1919-11-25	Type-writing machine
US1164056A (en)	1915-12-14	Type-writing machine.
US1060582A (en)	1913-05-06	Type-writing machine.
US966956A (en)	1910-08-09	Type-writing machine.
US903810A (en)	1908-11-10	Type-writing machine.
US1203837A (en)	1916-11-07	Type-writing-machine key and type-bar action.
US1099213A (en)	1914-06-09	Type-writing machine.
US1350398A (en)	1920-08-24	Typewriting-machine
US844446A (en)	1907-02-19	Type-writing machine.
US727216A (en)	1903-05-05	Type-writing machine.
US685123A (en)	1901-10-22	Type-writing machine.
US644515A (en)	1900-02-27	Writing-machine.
US823010A (en)	1906-06-12	Type-writing machine.
US1802500A (en)	1931-04-28	Typewriting machine
US596371A (en)	1897-12-28	To the wtckopf
US827538A (en)	1906-07-31	Type-writing machine.
US594777A (en)	1897-11-30	burridge
US685122A (en)	1901-10-22	Type-writing machine.
US958778A (en)	1910-05-24	Type-writing machine.
US887976A (en)	1908-05-19	Type-writing machine.
US1023796A (en)	1912-04-23	Type-writing machine.