Cutting – Cutting motion of tool has component in direction of moving... – Spring return of tool in counterfly direction
Patent
1977-07-12
1978-10-31
Abercrombie, Willie G.
Cutting
Cutting motion of tool has component in direction of moving...
Spring return of tool in counterfly direction
83337, 83298, 83191, 83352, B26D 156
Patent
active
041227387
ABSTRACT:
Apparatus for cutting and simultaneously dispensing a web of roll material comprising a carrier for a roll of material mounted in a casing and urged against a rotatable drum which is driven in rotation by manual traction applied to a free end of the material extending from the casing. A profiled pawl is supported at one of the ends of the drum and cooperates with a shock absorber and an elastic abutment to brake the drum at the end of one revolution and hold it in readiness for a subsequent pull on the material. An eccentric lever is secured at the other end of the drum and is engaged by a spring such that in a first portion of rotation of the drum, the spring absorbs energy and after a dead point, it releases its energy to drive the drum in rotation. The drum has a longitudinal slot and a cutting member is pivotably mounted in the slot and carries a follower which cooperates with a fixed cam such that the cutting member is retracted in the drum in a inoperative position and projects from the slot in the drum in the operative position to produce a cut across the entire width of the material while the latter is maintained in tension on both sides of the cutting member.
REFERENCES:
patent: 1811537 (1931-06-01), Cummings
patent: 2051242 (1936-08-01), Birr et al.
patent: 2512900 (1950-06-01), Kwitek
patent: 2769600 (1956-11-01), Kwitek et al.
patent: 2916956 (1959-12-01), Salomon
patent: 3641857 (1972-02-01), Vande Castle
patent: 3896691 (1975-07-01), Granger et al.
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