Patent JPS63147196A successfully refreshed from Google Patents.
Patent EP0016615A1 successfully refreshed from Google Patents.
EP0016615A1
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EP
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Cutting head for a cigarette filter attachment machine
Assignee: Mpac Group PLC
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Filing: 1980-03-13
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Granted: —
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Expires: 2000-03-13
Abstract
Abstract A cutting head for a cigarette filter attachment machine, for cutting a filter attachment web at regular intervals in cooperation with a cutting drum, comprising a rotary member (12; 45; 65) which carries one or more knives and is mounted on a movable carrier (21, 22; 43; 66) so as to be movable towards and away from the cutting drum (10; 45), and including a fluid-powered actuator (23,24; 47; 68) which is arranged to urge the cutting head towards the cutting drum.
Inventors
- 👤 Derek Henry Dyett
- 👤 Neil Thorp
- 👤 Godfrey Allen Wood
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:38
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/26; B26D7/2628; B26D7/265; A; A24; A24C; A24C5/00; A24C5/47; A24C5/471; A24C5/473; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4833; Y10T83/4838; Y10T83/4841; Y10T83/4844; Y10T83/768; Y10T83/7809; Y10T83/7851; Y10T83/7855
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
94 words
A cutting head for a cigarette filter attachment machine, for cutting a filter attachment web at regular intervals in cooperation with a cutting drum, and comprising a rotary member which carries one or more knives, characterised in that the rotary member (12 ; 45; 65) is mounted on a movable carrier (21, 22 ; 43 ; 66) so as to be movable towards and away from the cutting drum (10 ; 45), and including a fluid-powered actuator (23, 24; 47 ; 68) which is arranged to urge the cutting head towards the cutting drum.
Claim 2
Dependent Claim
94 words
A cutting head for a cigarette filter attachment machine, for cutting a filter attachment web at regular intervals in cooperation with a cutting drum, and comprising a rotary member which carries one or more knives, characterised in that the rotary member (12 ; 45; 65) is mounted on a movable carrier (21, 22 ; 43 ; 66) so as to be movable towards and away from the cutting drum (10 ; 45), and including a fluid-powered actuator (23, 24; 47 ; 68) which is arranged to urge the cutting head towards the cutting drum.
Claim 3
Dependent Claim
54 words
A cutting head according to claim 1 in which the movable carrier (21, 22; 43; 66) is formed by two parts (e.g. 21 and 22) supporting respectively the opposite ends of the cutting head, and in which there are two actuators (e.g. 23 and 24) acting respectively on the two parts of the carrier.
Claim 4
Dependent Claim
48 words
3 . A cutting head according to claim 2 in which each part of the carrier has a ball bearing or other bearing (19, 20) which supports the rotary member while -allowing slight freedom for the axis of the rotary member to tilt with respect to the carriers.
Claim 5
Dependent Claim
63 words
A cutting head according to any one of claims 1 to 3 in which each carrier comprises an arm (43 ; 66) which has, at one end, a bearing supporting one end of the rotary member, and at the other end is pivotally .mounted (at 44 or 67) to allow the rotary member to move towards and away from the cutting head (45).
Claim 6
Dependent Claim
53 words
A cutting head according to claim 4 in which a line joining the pivot (44; 67) of each arm (43; 66) and the axis of the rotary member (41; 65) is substantially at right angles to the direction in which the force of each actuator (47; 68) on the corresponding arm is applied.
Claim 7
Dependent Claim
40 words
A cutting head according to any one of claims 1 to 5 including a spring (74) for moving the rotary member (65) away from the cutting drum when no fluid pressure is supplied to the actuator or actuators (47; 68).
Claim 8
Dependent Claim
24 words
A cutting head according to any one of claims 1 to 6 in which the or each knife (14; 42; 85) is resiliently mounted.
Claim 9
Dependent Claim
26 words
A cutting head according to any one of claims 1 to 7 in which the actuator or each actuator (47; 68) is powered by hydraulic fluid.
Claim 10
Dependent Claim
23 words
A cutting head according to claim 8 in which the hydraulic fluid is fed to the actuator or actuators via a restrictor (62).
Claim 11
Dependent Claim
39 words
A cutting head according to claim 9 in which the restrictor (62) acts unidirectionally so as to allow substantially unrestricted flow of hydraulic fluid (or less restriction to the flow) in the direction away from the actuator or actuators.
Claim 12
Dependent Claim
17 words
A cutting head according to claim 9 or claim 1 0 in which the restrictor is adjustable.
Claim 13
Dependent Claim
31 words
A cutting head according to any one of claims 8 to 11 in which the hydraulic fluid pressure is derived from a source of air pressure via a pressure intensifier (56).
Claim 14
Dependent Claim
44 words
A cutting head according to any one of claims 8 to 12 in which at least one pipe conveying the hydraulic fluid to the actuator or actuators is flexible so as to be capable of expanding slightly under the effect of the hydraulic pressure.
Claim 15
Dependent Claim
25 words
A cutting head according to any one of claims 1 to 13 including means for automatically changing the fluid pressure during different periods of operation.
References Cited (Backward Citations)
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