GB1239772A - Impact-printing mechanism, particularly for price-computing shop counter weighing machines - Google Patents
Impact-printing mechanism, particularly for price-computing shop counter weighing machinesInfo
- Publication number
- GB1239772A GB1239772A GB43680/68A GB4368068A GB1239772A GB 1239772 A GB1239772 A GB 1239772A GB 43680/68 A GB43680/68 A GB 43680/68A GB 4368068 A GB4368068 A GB 4368068A GB 1239772 A GB1239772 A GB 1239772A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- impact
- momenta
- pinion
- centres
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
- B41K3/00—Apparatus for stamping articles having integral means for supporting the articles to be stamped
- B41K3/02—Apparatus for stamping articles having integral means for supporting the articles to be stamped with stamping surface located above article-supporting surface
- B41K3/04—Apparatus for stamping articles having integral means for supporting the articles to be stamped with stamping surface located above article-supporting surface and movable at right angles to the surface to be stamped
Landscapes
- Impression-Transfer Materials And Handling Thereof (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
- Rotary Presses (AREA)
- Handling Of Sheets (AREA)
Abstract
1,239,772. Selective printing. WIRTH GALLO & CO. 13 Sept., 1968 [11 Jan., 1968], No. 43680/68. Heading B6F. Hammer arrangement; noise prevention.-A hammer mechanism in an impact printer, particularly for price-computing shop counter weighing machines, comprises two movable elements mounted in a frame, the two elements each having one degree of freedom of movement and being positively coupled, the impression being produced by impact of one of the elements on a printing table, and the algebraic sum of the momenta of the elements and the moments of the momenta at the instant of impact being nil. In Fig. 1, the two elements 2 and 3 of equal mass are each formed with a projection 4 provided with rack teeth 5. Bores 6 and 8 have compression springs 7 and the racks 5 mesh with a pinion 9. The centres of gravity of the two elements move along a straight line A-A intersecting the shaft 10 of the pinion 9. The left-hand end of the frame 1 forms a printing table 20 supporting a type block 21, and the tape to be printed on is inserted into a slot 22. The mechanism is rocked by rotating the pinion 9 until the elements 2 and 3 reach the positions 2a and 3a, whereupon a tooth 18 of a spring- loaded lever 17 snaps into engagement with element 2. When the elements are released by depressing the lever 17, the springs 7 accelerate the two elements 2 and 3 and the end face of element 2 strikes the type block 21. A weak spring 15 at the end face of element 3 slightly retracts the two elements after impact to permit the tape to be withdrawn. At the instant of impact the sum of the momenta of the elements and the sum of the moments of the momenta is zero respectively, and therefore reactive moments likely to cause noise and vibration do not arise. In an alternative (Fig. 2), the two elements have the form of bell-crank levers pivoted at (23), the shorter lever arms (24) of the two elements having toothed sectors (25) in permanent mesh. One end of a leaf spring (26) engages the element 3, whereas its other end engages a notch (28) in the machine frame. The mechanism is rocked by deflecting the elements in contrary directions against the force of the leaf spring (26) to positions 2a, 3a, whereupon a pawl (31) engages element 3. At the same time type wheels (34) are set according to the object being weighed. When the pawl (31) releases the elements, they accelerate apart. At the point of impact, the centres of gravity (38) of the respective elements 2 and 3 are moving in opposite directions on a straight line. In (Fig. 3) a third embodiment is shown with co-rotating elements 2, 3, and in (Fig. 4) is shown a fourth embodiment, wherein the elements 2, 3 rotate about their respective centres of gravity. Hammer arrangement, toggle action.-In Fig. 5, the two elements 2, 3 are deflectably mounted on their respective shafts 39, and their masses are equal and equally distributed. Type faces are provided on a bar 44 which is adjusted according to a particular character. For creating the impression, the bar is impacted simultaneously from each side by the two impact faces 43.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH58668A CH485203A (en) | 1968-01-11 | 1968-01-11 | Impact printing mechanism, in particular for price-calculating retail scales |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1239772A true GB1239772A (en) | 1971-07-21 |
Family
ID=4190418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43680/68A Expired GB1239772A (en) | 1968-01-11 | 1968-09-13 | Impact-printing mechanism, particularly for price-computing shop counter weighing machines |
Country Status (6)
Country | Link |
---|---|
US (1) | US3595167A (en) |
CH (1) | CH485203A (en) |
DE (1) | DE1774726C3 (en) |
FR (1) | FR1603083A (en) |
GB (1) | GB1239772A (en) |
NL (1) | NL152795B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4027591A (en) * | 1975-03-26 | 1977-06-07 | Hans Gubela | Apparatus for positioning a pad or book of sheets on the work table of printing apparatus |
JPS5925666B2 (en) * | 1976-04-26 | 1984-06-20 | 株式会社サト−研究所 | Constant pressure mechanism in hand labelers, etc. |
US5848401A (en) * | 1995-12-22 | 1998-12-08 | Goldberg; Robert M. | Hand-held portable postage meter that uses pre-printed tape |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2687088A (en) * | 1948-08-30 | 1954-08-24 | Durant Mfg Co | Printing recording counter |
US2895411A (en) * | 1956-12-27 | 1959-07-21 | Ibm | High speed printer |
US2922361A (en) * | 1957-11-01 | 1960-01-26 | Toledo Scale Corp | Printer |
US3094064A (en) * | 1960-01-04 | 1963-06-18 | Ibm | Positioning mechanism in selective type printing machines |
US3152540A (en) * | 1961-09-18 | 1964-10-13 | Holley Comp Products Company | Hammer mechanism |
US3308749A (en) * | 1965-05-24 | 1967-03-14 | Ibm | Print impression control for specially configured type elements |
-
1968
- 1968-01-11 CH CH58668A patent/CH485203A/en not_active IP Right Cessation
- 1968-08-22 DE DE1774726A patent/DE1774726C3/en not_active Expired
- 1968-09-04 NL NL686812572A patent/NL152795B/en not_active IP Right Cessation
- 1968-09-10 FR FR1603083D patent/FR1603083A/fr not_active Expired
- 1968-09-13 GB GB43680/68A patent/GB1239772A/en not_active Expired
- 1968-10-07 US US765473A patent/US3595167A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE1774726B2 (en) | 1974-09-19 |
FR1603083A (en) | 1971-03-15 |
CH485203A (en) | 1970-01-31 |
NL152795B (en) | 1977-04-15 |
NL6812572A (en) | 1969-07-15 |
US3595167A (en) | 1971-07-27 |
DE1774726A1 (en) | 1972-01-27 |
DE1774726C3 (en) | 1975-05-15 |
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