US2229059A - Sheet attaching means for duplicators - Google Patents
Sheet attaching means for duplicators Download PDFInfo
- Publication number
- US2229059A US2229059A US214656A US21465638A US2229059A US 2229059 A US2229059 A US 2229059A US 214656 A US214656 A US 214656A US 21465638 A US21465638 A US 21465638A US 2229059 A US2229059 A US 2229059A
- Authority
- US
- United States
- Prior art keywords
- drum
- clip
- master sheet
- sheet
- slideway
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L11/00—Apparatus for directly duplicating from hectographic masters in mirror image, i.e. "wet duplicators" for producing positive copies
Landscapes
- Handling Of Cut Paper (AREA)
Description
Jan. 2l, A y, DITTY ETAL SHEET ATTACHING MEANS FOR4 DUPLIATORS Filed June 20, 1958 if' zg; I (af /0 haw/N C @wia/Mw.
Patented Jan. 21, 1941 UNITED STATES PATENT FHCE SHEET ATTACHING MEANS FOR DUPLICATORS Application June 20, 1933, Serial No. 214,656
8 Claims.
This invention relates to improvements in sheet attaching means for duplicating machines of the type by which a plurality of copy sheets may be made from a master sheet.
In duplicating machines, suitable dissoluble copying ink is employed in writing or typing the characters or data on the master sheet and prior to contact with the master sheet, the blank copy sheets are moistened with a Volatile quickly dif lo fusing uid, such as alcohol or other activating agent which will dissolve a minute but suflicient amount of the ink from the master characters to form clear legible duplicate characters on the copy sheets when they engage the master sheet under pressure.
It is an object of the present invention to provide a new and improved means of attaching the master sheet to a rotatable drum platen of the machine in a manner such that the master sheet can be easily and quickly attached to and/or detached from the drum platen.
Other objects of the invention will appear from the following description taken in connection with the accompanying drawing in which Fig. 1 is a top plan view of the machine;
Fig. 2is a detail sectional view of a drum platen and master sheet attaching means, taken along the line Z-of Fig. l;
Fig. 3 is a View similar to Fig. 2 showing the parts in the position they will assume to hold the master sheet to the drum platen;
Fig. 4 is an enlarged detail sectional view taken along the line tlof Fig. l.
Referring to the drawing by characters of reference, the present machine includes two spaced apart, substantially parallel upright side or frame members Ill, rigidly secured together by cross rods l I and at one or the rear end of the machine the uprights are provided with upwardly extended portions I2 having aligned apertures to receive stub shafts I3 which rotatably support a drum platen Iil. In the present instance, the drum Ill comprises an open ended tubular member and end members I5 and .iE secured in and to the opposite ends thereof, the end members I5 and I6 being provided with apertures or bearings to receive the stub shafts It. A manually operable crank Ilia may be provided to rotate the drum or the drum may be power driven, as desired.
In order to provide for quickly and easily attaching the master sheet, as at I'I, to the platen drum It, the drum is provided in its outer periphery with an elongated recess slot, or slideway I8 in which a slidable bar or clip I9 is adapted to hold the master sheet I'I secured to the drum by a border portion of the sheet along one edge thereof. The slideway I8 extends entirely across the drum substantially parallel to the axis of rotation of the drum and has opposed longitudinally extending side surfaces all which are relatively angularly disposed converging outwardly to the outer periphery of the drum Ill, Fig. 4. In the slideway I8, the outer surface of the clip I9 is substantially flush with the outer surface of the drum 4t and is provided along its opposite longi- 10 tudinal edges with spaced side members or flanges lI and 22 which position closely adjacent the outwardly diverging sides 2G of the slideway and also diverge outwardly so that` the outer surface cf the flanges 2l will abut the diverging side sur- 1:,
What we claim is:
1. In a duplicating machine for making a plurality of copies from a master sheet, a rotatable drum platen having an elongated slideway inthe outer surface thereof to receive a border portion of the master sheet along one edge thereof, said slideway extending substantially parallel with the axis of rotation of said drum, and a manually operated elongated member slidable longitudinally in said slideway and having an outer' surface substantially iiush with the outer periphery of said drum, said member on movement in one direction in said slideway attaching the master sheet to the drum and on movement in the opposite direction releasing the master sheet from said drum.
2. In a duplicating machine for making a plurality of copies from a master sheet, a rotatable drum .platen having an elongated recess in its outer surface extending substantially parallel with the axis of rotation of the drum, an elongated member longitudinally slidable in said r'ecess adjacent the outer periphery of said drum, one longitudinal side of said member and the adjacent side of said recess' cooperating to hold therebetween a border portion of the master sheet along one edge thereof, said adjacent side of said recess overhanging said member, and means operable on sliding o1 said member in one direction to urge said member outwardly toward said overhanging side of said recess.
3. In a duplicating machine for making a plurality of copies from a master sheet, a rotatable drum platen having a slot in its outer periphery extending substantially parallel with the axis of rotation of the drum to receive a border portion 0f the master* sheet, a single slide clip in said slot to hold the master sheet to the drum, and means operable on sliding of said clip in said slot in one direction to urge yieldingly said clip into engagement with said drum.
4. In a duplicating machine for making a plurality of copies from a master sheet, a rotatable drum platen having a slot in its outer periphery extending substantially parallel with the axis of rotation of the drum to receive a border portion of the master sheet, said slot having opposite side walls converging outwardly toward the periphery of said drum a slide clip in said slot to hold the master sheet to the drum, said clip having opposite sides converging outwardly complementary to the opposed sides of said slot, and spring means tensioned on sliding 0f said clip in one direction and urging said clip outwardly into frictional holding relation with the converging side walls of the slot.
5. In a duplicating machine for' making a plurality of copies from a master sheet, a rotatable drum platen having a slot in its outer periphery extending substantially parallel with the axis of rotation of the drum to receive a border portion of the master sheet, a slide clip in said slot to engage the border portion of the master sheet and hold the sheet to the drum, and spring means carried by said clip in said slot and tensioned to urge the clip in a direction to hold the master sheet tightly to the drum.
6. In a duplicating machine for making a `plurality of copies from a master sheet, a rotatable drum platen having a slot in its outer periphery extending substantially parallel with the axis of rotation or" the drum to receive a border portion of the master sheet, a slide clip in said slot to hold the master sheet to the drum and means carried by said clip and tensioned on movement of the clip in one direction relative to the drum to hold the master sheet tightly to the drum, said drum having recesses to receive said springs to release the tension thereon upon movement of said clip in the opposite direction.
7. In a device for' holding a shee-t of paper, a support having an elongated recess into which a border portion along one edge of the sheet is inserted, a clip slidable longitudinally in said recess between two positions, one edge of said recess overhanging said clip and means tensioned on sliding movement of said clip to one of said positions to urge said clip outwardly of said recess against said overhanging edge for releasably holding the sheet to said support.
8. In a device for holding a sheet of paper, a support having an elongated recess into which a border portion along one edge of the sheet is inserted, an elongated clip member slidable in said recess between two positions, said clip member cn movement to one of said positions releasably clamping the sheet to said support, and spring means in recess tensioned on movement of said clip member to said one position to urge said clip into clamping relation with the border position of the sheet, and yieldingly resisting movement of said clip member from said one position.
ALLAN V. DITTY. ERDWIN C. GRUSCHOW.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US214656A US2229059A (en) | 1938-06-20 | 1938-06-20 | Sheet attaching means for duplicators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US214656A US2229059A (en) | 1938-06-20 | 1938-06-20 | Sheet attaching means for duplicators |
Publications (1)
Publication Number | Publication Date |
---|---|
US2229059A true US2229059A (en) | 1941-01-21 |
Family
ID=22799942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US214656A Expired - Lifetime US2229059A (en) | 1938-06-20 | 1938-06-20 | Sheet attaching means for duplicators |
Country Status (1)
Country | Link |
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US (1) | US2229059A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2496838A (en) * | 1946-10-26 | 1950-02-07 | Wright Co | Moistener for duplicating machines |
US2577073A (en) * | 1947-09-27 | 1951-12-04 | Davidson Corp | Plate clamp means |
US2990772A (en) * | 1957-08-14 | 1961-07-04 | Davidson Corp | Plate clamping means for printing machines |
US4061087A (en) * | 1976-12-17 | 1977-12-06 | Newspaper Equipment Company | Plate locking structure for press cylinders |
US4376414A (en) * | 1980-05-13 | 1983-03-15 | M.A.N.-Roland Druckmaschinen Aktiengesellschaft | Printing plate attachment arrangement |
US4421024A (en) * | 1981-04-25 | 1983-12-20 | M.A.N.-Roland Druckmaschinen Aktiengesellschaft | Printing plate attachment system |
US4505199A (en) * | 1982-11-26 | 1985-03-19 | Riso Kagaku Corporation | System for retaining stencil printing master on printing drum by clamp strip hinged along drum generator |
US4528906A (en) * | 1983-07-29 | 1985-07-16 | Riso Kagaku Corporation | System for retaining stencil printing master on printing drum |
EP0856401A2 (en) * | 1997-01-30 | 1998-08-05 | MAN Roland Druckmaschinen AG | Device for fixing a flexible covering onto a printing cylinder |
-
1938
- 1938-06-20 US US214656A patent/US2229059A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2496838A (en) * | 1946-10-26 | 1950-02-07 | Wright Co | Moistener for duplicating machines |
US2577073A (en) * | 1947-09-27 | 1951-12-04 | Davidson Corp | Plate clamp means |
US2990772A (en) * | 1957-08-14 | 1961-07-04 | Davidson Corp | Plate clamping means for printing machines |
US4061087A (en) * | 1976-12-17 | 1977-12-06 | Newspaper Equipment Company | Plate locking structure for press cylinders |
US4376414A (en) * | 1980-05-13 | 1983-03-15 | M.A.N.-Roland Druckmaschinen Aktiengesellschaft | Printing plate attachment arrangement |
US4421024A (en) * | 1981-04-25 | 1983-12-20 | M.A.N.-Roland Druckmaschinen Aktiengesellschaft | Printing plate attachment system |
US4505199A (en) * | 1982-11-26 | 1985-03-19 | Riso Kagaku Corporation | System for retaining stencil printing master on printing drum by clamp strip hinged along drum generator |
US4528906A (en) * | 1983-07-29 | 1985-07-16 | Riso Kagaku Corporation | System for retaining stencil printing master on printing drum |
EP0856401A2 (en) * | 1997-01-30 | 1998-08-05 | MAN Roland Druckmaschinen AG | Device for fixing a flexible covering onto a printing cylinder |
EP0856401A3 (en) * | 1997-01-30 | 1999-04-14 | MAN Roland Druckmaschinen AG | Device for fixing a flexible covering onto a printing cylinder |
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