Patent US3658162A successfully refreshed from Google Patents.
US3658162A
Expired / Lapsed
US
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Apparatus for attaching a type head
Assignee: OLYMPHIA WERKE AG
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Filing: 1970-11-12
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Granted: 1972-04-25
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Expires: 1990-11-12
Abstract
Abstract Holding portions of a carrier shaft pass through a type head and have slots above the same located in a cap on the type head. An arresting slide is mounted in the cap and has an arresting end position located in the slots so that the cap retains the type head, and an inoperative end position in which the type head can be detached. A handle lever is mounted on the cap and connected by a spring with the arresting slide is such a manner that the spring is more tensioned in an intermediate dead center position than in the arresting and inoperative positions, and the arresting slide tends to remain in either end position.
Inventors
- 👤 Chien Van Der Werff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:19
CPC Classifications
B; B41; B41J; B41J1/00; B41J1/60
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
264 words
Apparatus for attaching a type head, comprising a carrier shaft including a top end portion having holding means; a type head; means mounting said type head on said top end portion for detaching movement in axial direction, and also for rotation with said carrier shaft in a position in which said holding means are located above said type head; retaining means including a cap secured to said type head, and an arresting slide mounted in said cap for movement between an inoperative position, and an arresting position engaging said cap and said holding means for holding said cap and thereby said type head on said top end portion; and operating means including a handle mounted on said cap for angular movement about a first axis, and spring means connected with said handle for angular movement about a second axis, and being connected with said arresting slide for angular movement about a third axis whereby said handle can be moved between two end positions in which said arresting slide is in said inoperative and arresting positions, respectively, and through an intermediate dead center position in which said first, second, and third axes are located in the same plane and said arresting slide abuts said cap so that said spring means is more stressed in said dead center position than in said end positions whereby said operating means is biassed to any one of said end positions when moved from the respective other end position through said dead center position and said arresting slide tends to remain in any one of said inoperative and arresting positions.
Claim 2
Dependent Claim
264 words
Apparatus for attaching a type head, comprising a carrier shaft including a top end portion having holding means; a type head; means mounting said type head on said top end portion for detaching movement in axial direction, and also for rotation with said carrier shaft in a position in which said holding means are located above said type head; retaining means including a cap secured to said type head, and an arresting slide mounted in said cap for movement between an inoperative position, and an arresting position engaging said cap and said holding means for holding said cap and thereby said type head on said top end portion; and operating means including a handle mounted on said cap for angular movement about a first axis, and spring means connected with said handle for angular movement about a second axis, and being connected with said arresting slide for angular movement about a third axis whereby said handle can be moved between two end positions in which said arresting slide is in said inoperative and arresting positions, respectively, and through an intermediate dead center position in which said first, second, and third axes are located in the same plane and said arresting slide abuts said cap so that said spring means is more stressed in said dead center position than in said end positions whereby said operating means is biassed to any one of said end positions when moved from the respective other end position through said dead center position and said arresting slide tends to remain in any one of said inoperative and arresting positions.
Claim 3
Dependent Claim
45 words
Apparatus as claimed in claim 1 wherein said holding means include open slot means; and wherein said arresting slide is a plate including arresting arms located in said slot means in said arresting position, and located outside of said slot means in said inoperative position.
Claim 4
Dependent Claim
25 words
Apparatus as claimed in claim 2 wherein said slot means include confronting open slots in which said arresting arms are located in said arresting position.
Claim 5
Dependent Claim
37 words
Apparatus as claimed in claim 3 wherein said slots have slanted faces; and wherein said arresting arms have slanted lateral edges engaging said slanted faces wedged against the same in said arresting position of said arresting slide.
Claim 6
Dependent Claim
15 words
Apparatus as claimed in claim 3 wherein said open slots have a trapezoid cross section.
Claim 7
Dependent Claim
15 words
Apparatus as claimed in claim 3 wherein said slide has slits bounding said arresting arms.
Claim 8
Dependent Claim
54 words
Apparatus as claimed in claim 1 wherein said top end portion of said carrier shaft has an annular peripheral slot forming a flange; and wherein said arresting slide is a plate having arresting arms located in said annular peripheral slot in said arresting position, and located outside of the same in said inoperative position.
Claim 9
Dependent Claim
51 words
Apparatus as claimed in claim 7 wherein a pair of said arresting arms forms an opening for said tOp end position having a wide portion for the axial passage of said flange in said inoperative position, and a narrow portion into which said annular peripheral slot fits in said arresting position.
Claim 10
Dependent Claim
71 words
Apparatus as claimed in claim 1 wherein said handle is a lever having a pair of projecting portions formed with aligned bores; wherein said spring means includes a substantially U-shaped wire spring having legs, and transverse projecting portions at the ends of said legs projecting into said bores, respectively, and a yoke portion forming a journal mounted at one end of said arresting slide for angular movement about said third axis.
Claim 11
Dependent Claim
81 words
Apparatus as claimed in claim 1 wherein said handle is a lever having a pair of projecting portions having aligned bores, and a pin located in said bores; and wherein said spring means include a leaf spring having a tubular end portion forming a bearing for said pin, and a second end portion forming a journal; and wherein said arresting slide has an end portion formed as a tubular bearing supporting said second end portion for movement about said third axis.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |