GB1331927A - Material cutting machine and sound absorbing hood therefor - Google Patents

Material cutting machine and sound absorbing hood therefor

Info

Publication number
GB1331927A
GB1331927A GB1331927DA GB1331927A GB 1331927 A GB1331927 A GB 1331927A GB 1331927D A GB1331927D A GB 1331927DA GB 1331927 A GB1331927 A GB 1331927A
Authority
GB
United Kingdom
Prior art keywords
walls
hopper
enclosure
inlet
base
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
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
USI ENG Ltd
Original Assignee
USI ENG Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by USI ENG Ltd filed Critical USI ENG Ltd
Priority to GB820072 priority Critical
Publication of GB1331927A publication Critical patent/GB1331927A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16Details

Abstract

1331927 Hoppers USI ENG Ltd 22 Feb 1972 8200/72 Heading B8S [Also in Divisions B2 and F2] A comminuting apparatus comprising a base 4, Fig. 1, cutting means 6, a motor 12, an inlet 8 and exit 10, has a combined sound-absorbing hopper 60 Fig. 4 and enclosure 26. The hopper and enclosure comprises an elongate tubular structure with outside and inside composite walls which are spaced apart to provide an air space between them. The outer walls form the enclosure 26 and the inner walls the hopper 60. Means 80 space the walls apart. The outer wall comprises an outermost sound attenuating layer 46, e.g. of aluminium brass or copper, and inner layers 48, 50 and 52 of foamed plastics lead and foamed plastics respectively suitably adhered by e.g. epoxy resin. The hopper 60 comprises side, back, bottom, top and front walls 70, 72, 74, 76, 77, 78 reinforced with plates 82 and covered with a sound damping material 61 of, e.g. clay-epoxy resin mixture or vermiculite. The structure is hinged at 28 Fig. 1, to the base 4 to permit access to the inlet of the comminuting apparatus. The inlet is soundinsulated by curtains 86 comprising pairs of flexible elastomeric sheets, 88, 90. The drive shaft is insulated by a pad 106, Fig. 3 and the pulley drive 18 and belts 22 by a shroud, 96. A discharge bin 110 is removably secured by a bracket 114 and dog 116 to the underside of a slanting upper table 32 of the base of the machine.
GB1331927D 1972-02-22 1972-02-22 Material cutting machine and sound absorbing hood therefor Expired GB1331927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB820072 1972-02-22

Publications (1)

Publication Number Publication Date
GB1331927A true GB1331927A (en) 1973-09-26

Family

ID=9847777

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1331927D Expired GB1331927A (en) 1972-02-22 1972-02-22 Material cutting machine and sound absorbing hood therefor

Country Status (1)

Country Link
GB (1) GB1331927A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381368A1 (en) * 1977-02-16 1978-09-15 Delta Materials Research Ltd PROCEDURE AND INSTALLATION FOR NOISE ATTENUATION
GB2140134A (en) * 1983-05-16 1984-11-21 Marvel Specialty Acoustical shield assembly for a sewing machine
EP0386698A2 (en) * 1989-03-07 1990-09-12 Hermann Schwelling Document shredder with a driving unit for the cutting rotors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381368A1 (en) * 1977-02-16 1978-09-15 Delta Materials Research Ltd PROCEDURE AND INSTALLATION FOR NOISE ATTENUATION
GB2140134A (en) * 1983-05-16 1984-11-21 Marvel Specialty Acoustical shield assembly for a sewing machine
EP0386698A2 (en) * 1989-03-07 1990-09-12 Hermann Schwelling Document shredder with a driving unit for the cutting rotors
EP0386698A3 (en) * 1989-03-07 1991-01-30 Hermann Schwelling Document shredder with a driving unit for the cutting rotors

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee