US2582803A - Type bar actuating mechanism for typewriters - Google Patents

Type bar actuating mechanism for typewriters Download PDF

Info

Publication number: US2582803A
Authority: US; United States
Prior art keywords: type bar; plate; type; bar; conjunction
Prior art date: 1948-01-31
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

US69486A

Other languages

English (en)

Inventor

Tombolini Alfredo

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.)

Individual

Original Assignee

Individual

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.)

1948-01-31

Filing date

1949-01-06

Publication date

1952-01-15

1949-01-06 Application filed by Individual filed Critical Individual

1952-01-15 Application granted granted Critical

1952-01-15 Publication of US2582803A publication Critical patent/US2582803A/en

1969-01-15 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

230000007246 mechanism Effects 0.000 title description 16
230000000295 complement effect Effects 0.000 description 9
244000201986 Cassia tora Species 0.000 description 1
230000000881 depressing effect Effects 0.000 description 1
NCAIGTHBQTXTLR-UHFFFAOYSA-N phentermine hydrochloride Chemical compound [Cl-].CC(C)([NH3+])CC1=CC=CC=C1 NCAIGTHBQTXTLR-UHFFFAOYSA-N 0.000 description 1

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 is for improvements in' the type har actuating mechanism for typewriters
I-nmodern typewriters one important'object to achieveis particularly thatof providing a soft oreasy keyboard; This requires provision of a type bar actuating mechanism with which depressing of thekey bars is soft or easy, inorder toreduce as much as possible the fatigue of the typist and at the sametime" to increase the-writing speed of the typewriter.
Figure 1 shows a modern type baractuating mechanism for typewriterswith soft actuation of the keys, to which the improvement according to this invention is applied.
Figure 1a is a view partly in section and partly in perspective showing the plate of. thisinvention in its relation to the segment and thesemicircular axis.
Figure 2 shows the end ofthe type barand the conjunction plate according to thisinvention
Figure 3 shows the same inserted and hooked together
Figure 4' shows the spring holding the plate in inserted and hooked position on the type bar.
I indicates the plate according to this invention and 2 indicates the type bar; 3 is the pulling element with one end attached to the plate I andlwithits other end mounted ona straight bridge (not shown) arranged beneath the semicircular: segment 9. 5 and '5 are other'actuating elements of th mechanism and 'i' is the key: bar. 4' is a spring, of the type shown in Figure 41 used in maintaining the type. bar: in inserted? and hooked position with its plate;
the plate! has a bore ia throughwhich passes the semicircular axis lb: which: is common tora'll plates and which is inserted. in acorresponding bore of the semicircular'segment; the plate I? has acutout I at the left of the bore ta andla: hook I" attheright'of said bore asshown in ' Figure12.
.tl'ierrear endiof theltypie bar' 2 has: a; complementary shapev allowing said: type bar end tcsbednsertedandi tdibezho'okedx on. said bar end has a hook 2' at the left, and a cutout 2 at the right, of a central cutout area, which cutout area receives that central part of the plate I which contains the bore la as shown in Figure 2.
the spring 4 is a safety means. One end of spring 4 is fastened to the plate. The other end of spring 4 is U-shaped and is hooked over the type bar end which end is notched or is provided with a recess to retain the U-shaped end of spring 4.
the mechanism according to this invention due to the improvement described, combines two advantages which up to now have not been achieved in the known type bar actuating mechanisms, namely:
An improved type bar actuating mechanism for typewriters comprising a semicircular segment with slits and a semicircular bore, a semicircular axis inserted in said bore, type bars each inserted with the base end thereof in a slit of the segment, conjunction plates having a complementary shape with the base ends of said type bars, each of such conjunction plates being inserted in a slit of the segment so as to lie in the same plane as and to engage the base end of a type bar so as to function as one piece with said type bar, each type bar being supported by its respective conjunction plate, each of said plates being apertured at a central portion thereof to receive said semicircular axis, and a key-actuated pulling element attached to each of said plates.
An improved type bar actuating mechanism for typewriters comprising a semicircular segment with slits and a semicircular bore therein, a semicircular axis inserted in said bore, type bars each inserted with its base end in a slit of the segment, conjunction plates having a complementary shape with the base ends of the type bars, each of said conjunction plates inserted in .a slit of the segment so as to lie in the same ,plane as and to engage the base end of a type bar so as to function as one piece with said type bar, each type bar being supported by its respective conjunction plate, each of said plates being apertured at the central portion thereof to receive said semicircular axis, the base end of each type bar having a hook-shaped portion fitting over said central portion of said plate, and a keyactuated pulling element attached to each of said plates.
An improved type bar actuating mechanism for typewriters comprising a semicircular segment with slits and a semicircular bore therein, a semicircular axis inserted in said bore, type bars each inserted with the base end thereof in a slit of the segment, conjunction plates having a complementary shape with the base ends of said type bars, each of such conjunction plates being inserted in a slit of the segment so as to lie in the same plane as and to engage the base end of a type bar so as to function as one piece with said type bar, each type bar being supported by its respective conjunction plate, each of said plates being apertured at a central portion thereof to receive said semicircular axis and having a hook portion and a cutout portion, each type bar base end having a complementary hook portion and a cutout portion interfitting with the hook portion and the cutout portion of said plate, and a keyactuated pulling element attached to each of said plates.
An improved type bar actuating mechanism for typewriters comprising a semicircular segment with slits and a semicircular bore therein, a semicircular axis inserted in said bore, type bars each inserted with the base end thereof in a slit of the segment, conjunction plates having a shape complementary with the base ends of said type bars, each of such conjunction plates being inserted in a slit of the segment so as to lie in the same plane as and to engage the base end of a type bar so as to function as one piece with said type bar, each type bar being supported by its respective conjunction plate, each of said plates being apertured at a central portion thereof to receive said semicircular axis, each of said plates having a hook portion at one side of said central portion and having a cutout portion at the other side of said central portion, each type bar base and having a hook portion and a cutout portion, said hook portion of said type bar base end being of complementary shape with said cutout portion of said plate and hooking over the central portion of said plate in interfitting engagement with
An improved type bar actuating mechanism for typewriters as claimed in claim 4 including a spring, one end of which is fixed in said conjunction plate and the other end hooked over the hook portion of said type bar base end for demountably holding said conjunction plate and said type bar in assembled relation.
An improved type bar actuating mechanism as claimed in claim 5 in which that end of the spring hooked over the hook portion of the type bar base end is U-shaped and the hook portion of said type bar base end is notched for engagement with the U-shaped end of said spring.
a typewriter having a semicircular segment with slits, a semicircular bore therein and a semicircular axis inserted in said bore, a conjunction plate inserted in a slit of said segment and pivotally attached to said axis, a type bar, the base end of said type bar being inserted in said slit in supported engagement with said plate, said plate and said type bar base end lying in the same plane and formed with interfitted, interlocked complementary portions, and a key-actuated pulling element attached to said plate.
a type bar having at one end a hook portion and a cutout portion and a complementarilyshaped conjunction plate having a cutout portion and a hooked portion fitting said hook portion and said cutout portion, respectively, of said type bar so as to function as one piece with said type bar, said conjunction plate provided with means I for pivotally mounting said conjunction plate and said type bar.
a type bar as set out in claim 8 includin resilient meansfor demountably holding said conjunction plate and said type bar in assembled relation.

Landscapes

Accessory Devices And Overall Control Thereof (AREA)
Impression-Transfer Materials And Handling Thereof (AREA)
Details Of Connecting Devices For Male And Female Coupling (AREA)

US69486A 1948-01-31 1949-01-06 Type bar actuating mechanism for typewriters Expired - Lifetime US2582803A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT275822X		1948-01-31

Publications (1)

Publication Number	Publication Date
US2582803A true US2582803A (en)	1952-01-15

Family

ID=11221930

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
US69486A Expired - Lifetime US2582803A (en)	1948-01-31	1949-01-06	Type bar actuating mechanism for typewriters

Country Status (5)

Country	Link
US (1)	US2582803A (de)
CH (1)	CH275822A (de)
DE (1)	DE938671C (de)
FR (1)	FR979834A (de)
GB (1)	GB657012A (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US966170A (en) *	1903-10-03	1910-08-02	Monarch Typewriter Co	Type-writing machine.
US2198520A (en) *	1937-01-23	1940-04-23	Tombolini Alfredo	Type bar actuating mechanism in standard and portable typewriters

1949
- 1949-01-06 US US69486A patent/US2582803A/en not_active Expired - Lifetime
- 1949-01-28 CH CH275822D patent/CH275822A/de unknown
- 1949-01-31 FR FR979834D patent/FR979834A/fr not_active Expired
- 1949-01-31 GB GB2600/49A patent/GB657012A/en not_active Expired
- 1949-02-05 DE DEP32851A patent/DE938671C/de not_active Expired

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US966170A (en) *	1903-10-03	1910-08-02	Monarch Typewriter Co	Type-writing machine.
US2198520A (en) *	1937-01-23	1940-04-23	Tombolini Alfredo	Type bar actuating mechanism in standard and portable typewriters

Also Published As

Publication number	Publication date
DE938671C (de)	1956-02-02
CH275822A (de)	1951-06-15
FR979834A (fr)	1951-05-04
GB657012A (en)	1951-09-05

Publication	Publication Date	Title
US2582803A (en)	1952-01-15	Type bar actuating mechanism for typewriters
US1534116A (en)	1925-04-21	Typewriting machine
US1293739A (en)	1919-02-11	Stenographic writing-machine.
US1701376A (en)	1929-02-05	Typewriting machine
US886570A (en)	1908-05-05	Type-writing machine.
US1118998A (en)	1914-12-01	Recording mechanism.
US1273010A (en)	1918-07-16	Type-writing machine.
US1356826A (en)	1920-10-26	Typewriting-machine
US1021153A (en)	1912-03-26	Type-writing machine.
US758197A (en)	1904-04-26	Type-bar construction.
US895652A (en)	1908-08-11	Changeable type for type-writers.
US1177020A (en)	1916-03-28	Type-writing machine.
US1164056A (en)	1915-12-14	Type-writing machine.
US1194419A (en)	1916-08-15	Tg machine
US1767876A (en)	1930-06-24	Typewriting machine
US1857741A (en)	1932-05-10	Noiseless type action for typewriters
US856870A (en)	1907-06-11	Writing-machine.
US1467723A (en)	1923-09-11	Typewriting machine
US881275A (en)	1908-03-10	Type-writing machine.
US719079A (en)	1903-01-27	Type-writer.
US774925A (en)	1904-11-15	Type-bar for type-writers or like machines.
US1520127A (en)	1924-12-23	Typewriting machine
US882246A (en)	1908-03-17	Type-writing machine.
US1425326A (en)	1922-08-08	Typewriting machine
US881795A (en)	1908-03-10	Type-writer.