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1. (WO1985004616) IMPROVEMENTS IN KNIVES IN CUTTING MACHINES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1985/004616 International Application No.: PCT/GB1985/000134
Publication Date: 24.10.1985 International Filing Date: 01.04.1985
IPC:
A24B 7/02 (2006.01) ,A24B 7/12 (2006.01) ,B26D 1/00 (2006.01)
A HUMAN NECESSITIES
24
TOBACCO; CIGARS; CIGARETTES; SMOKERS' REQUISITES
B
MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
7
Cutting tobacco
02
by machines with reciprocating knives
A HUMAN NECESSITIES
24
TOBACCO; CIGARS; CIGARETTES; SMOKERS' REQUISITES
B
MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
7
Cutting tobacco
04
by machines with revolving knives
08
with several knives which act one after the other
12
with cutter axes transverse to the feeding direction
B PERFORMING OPERATIONS; TRANSPORTING
26
HAND CUTTING TOOLS; CUTTING; SEVERING
D
CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
1
Cutting through work characterised by the nature or movement of the cutting member; Apparatus or machines therefor; Cutting members therefor
Applicants:
AMF INCORPORATED [US/US]; 777 Westchester Avenue White Plains, NY 10604, US (AllExceptUS)
RAY, Eric, Thomas [GB/GB]; GB (UsOnly)
Inventors:
RAY, Eric, Thomas; GB
Agent:
MATTHEWS, HADDAN & CO.; Haddan House 33 Elmfield Road Bromley Kent BR1 1SU, GB
Priority Data:
840915709.04.1984GB
Title (EN) IMPROVEMENTS IN KNIVES IN CUTTING MACHINES
(FR) AMELIORATIONS RELATIVES AUX COUTEAUX DE MACHINES DE COUPE
Abstract:
(EN) A knife (10) is provided for a tobacco cutting machine and comprises a plate having one surface bevelled to produce a cutting edge and a plurality of grooves (11) formed at right angles to the cutting edge in the surface of the knife which is not bevelled thereby providing a crenellated cutting edge (12) having alternate leading and trailing cutting edges (12a, 12b). The grooves are spaced apart in such manner that the width of each leading cutting edge is small enough so that during cutting the induced strain on the cut strand in the region of each leading cutting edge is greater than 0.4.
(FR) Un couteau (10) destiné à être utilisé dans une machine de coupe de tabac comprend une plaque possédant une surface biseautée pour produire un bord de coupe et une pluralité de rainures (11) formées à angle droit par rapport au bord de coupe dans la surface du couteau qui n'est pas biseautée, formant ainsi un bord crénelé (12) possédant des bords de coupe d'attaque et de fuite alternés (12a, 12b). Les rainures sont écartées de sorte que la largeur de chaque bord de coupe d'attaque soit suffisamment petite pour que, pendant la coupe, l'effort induit sur le fil de coupe dans la région de chaque bord de coupe d'attaque soit supérieur à 0,4.
Designated States: JP, KR, US
European Patent Office (DE, GB, IT)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0179787US4700720JPS61501757CA1241267KR1019860700015