GB733080A - Envelope opening mechanism - Google Patents
Envelope opening mechanismInfo
- Publication number
- GB733080A GB733080A GB1655852A GB1655852A GB733080A GB 733080 A GB733080 A GB 733080A GB 1655852 A GB1655852 A GB 1655852A GB 1655852 A GB1655852 A GB 1655852A GB 733080 A GB733080 A GB 733080A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- rotary
- rotary blade
- blade
- envelopes
- 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
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
- B43M7/00—Devices for opening envelopes
- B43M7/008—Devices for opening envelopes with a cylindrical cutter
Landscapes
- Knives (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
Abstract
733,080. Opening envelopes. STEEN, W. B., and STEEN, L. A. July 1, 1952, No. 16558/52. Class 31 (1). Mechanism for opening envelopes by cutting a narrow strip from one or more edges thereof comprises a rotary cylinder 1 cairying an offset blade 9 coacting with a pivoted non-rotary blade 11 which is pressed towards the cylinder by means of tension springs 13 connected to fixed anchorages 15, the cylinder being provided with end collars 8 to maintain a gap of the desired width between the non-rotary blade and the cylinder. The rotary blade is provided with front and rear cutting edges 10, 10A so that the cylinder can be reversed when one cutting edge becomes blunt. The tension springs may be replaced by compression springs either extending between fixed anchorages and a downward extension of the non-rotary blade or bearing on the front of the non-rotary blade above its pivot line 12. The envelopes are guided by a platen 18 and entered through a slot 17 in a cover 16, and a removable tray 20 is provided for catching trimmings. In a modification, Fig. 4 (not shown), three sets of rotary and non- rotary cutters are provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1655852A GB733080A (en) | 1952-07-01 | 1952-07-01 | Envelope opening mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1655852A GB733080A (en) | 1952-07-01 | 1952-07-01 | Envelope opening mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
GB733080A true GB733080A (en) | 1955-07-06 |
Family
ID=10079481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1655852A Expired GB733080A (en) | 1952-07-01 | 1952-07-01 | Envelope opening mechanism |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB733080A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982003206A1 (en) * | 1981-03-12 | 1982-09-30 | Morax Francois | Device for opening envelopes or similar objects |
EP0350646A1 (en) * | 1988-07-13 | 1990-01-17 | Dieter Haage | A letter opener |
EP0607966A1 (en) * | 1993-01-22 | 1994-07-27 | Delta Real Establishment | Device for opening envelopes |
-
1952
- 1952-07-01 GB GB1655852A patent/GB733080A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982003206A1 (en) * | 1981-03-12 | 1982-09-30 | Morax Francois | Device for opening envelopes or similar objects |
US4527455A (en) * | 1981-03-12 | 1985-07-09 | Delta-Real Establishment | Device for opening envelopes or the like |
AT390401B (en) * | 1981-03-12 | 1990-05-10 | Delta Real Ets | DEVICE FOR OPENING ENVELOPES |
EP0350646A1 (en) * | 1988-07-13 | 1990-01-17 | Dieter Haage | A letter opener |
US5001833A (en) * | 1988-07-13 | 1991-03-26 | Dieter Haage | Letter opener |
EP0607966A1 (en) * | 1993-01-22 | 1994-07-27 | Delta Real Establishment | Device for opening envelopes |
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