GB1279472A - Improvements in or relating to absorbent devices - Google Patents

Improvements in or relating to absorbent devices

Info

Publication number
GB1279472A
GB1279472A GB5309269A GB5309269A GB1279472A GB 1279472 A GB1279472 A GB 1279472A GB 5309269 A GB5309269 A GB 5309269A GB 5309269 A GB5309269 A GB 5309269A GB 1279472 A GB1279472 A GB 1279472A
Authority
GB
United Kingdom
Prior art keywords
chamber
tube
fibres
flow tube
filling
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
GB5309269A
Inventor
Geoffrey Dakin
Henry Cripps
Donald Arthur Wilkes
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.)
HARMO IND Ltd
Original Assignee
HARMO IND 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 HARMO IND Ltd filed Critical HARMO IND Ltd
Priority to GB5309269A priority Critical patent/GB1279472A/en
Publication of GB1279472A publication Critical patent/GB1279472A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/06—Inserting sound absorbing material into a chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated

Abstract

1279472 Making filters and silencers HARMO INDUSTRIES Ltd 29 Oct 1970 [30 Oct 1969] 53092/69 Heading B3A [Also in Division F1] Absorbent device comprising a chamber containing a flow tube and having a closely packed fibrous filling in the annular space between the chamber and flow tube is made by closing one end of the chamber and feeding the filling as separate fibres into the opposite end of the chamber. The fibres are packed together and around the tube by reducing the pressure within the flow tube, initially at the end nearest the closed end of the chamber and then over an increasing length of the flow tube corresponding to the increasing level of the fibres fed into the chamber. Apertured tube 23 extends vertically within chamber 20, the lower end of which is closed by flange 22. Piston 25 is an air tight fit in tube 23 which is connected by pipe 2 9 to a suction device. Fibres from hopper 21 fall into annular space 31 and are drawn into a closely packed mass by air flow through the apertures 24. Piston 25 is progressively raised so that it is always at, or slightly above the level of the surface of the fibres. When the chamber has been filled, the tube 23 is removed and replaced by a flow tube which extends beyond both ends of the chamber, that part of the tube within the chamber being apertured. The filling is retained by closing the end of the chamber with a second flange similar to 22, to form a vehicle exhaust silencer. The fibres are separated prior to being fed into hopper 21 by placing them on an endless conveyer which feeds them between a driven helically grooved roller and a counter-rotating spiked roller. The fibres are mineral wool formed from blown slag, or glass fibre. A filter is formed by closing one end of the flow tube so that a fluid passes from the flow tube through the filling into the chamber, which then forms part of the fluid flow path.
GB5309269A 1969-10-30 1969-10-30 Improvements in or relating to absorbent devices Expired GB1279472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5309269A GB1279472A (en) 1969-10-30 1969-10-30 Improvements in or relating to absorbent devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5309269A GB1279472A (en) 1969-10-30 1969-10-30 Improvements in or relating to absorbent devices

Publications (1)

Publication Number Publication Date
GB1279472A true GB1279472A (en) 1972-06-28

Family

ID=10466608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5309269A Expired GB1279472A (en) 1969-10-30 1969-10-30 Improvements in or relating to absorbent devices

Country Status (1)

Country Link
GB (1) GB1279472A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106481A2 (en) * 1982-09-10 1984-04-25 Unipart Group Limited Packing automobile exhaust silencers
EP0146249A2 (en) * 1983-11-18 1985-06-26 TBA Industrial Products Limited Glass fibre products
EP0153100A1 (en) * 1984-02-14 1985-08-28 Unipart Group Limited Method of and apparatus for packing exhaust silencer casings
WO2000017497A1 (en) * 1998-09-18 2000-03-30 Donaldson Company, Inc. Apparatus for installing a packing material in a muffler assembly; and methods thereof
CN112996989A (en) * 2018-10-12 2021-06-18 科瑞法特股份有限公司 Glass fiber yarn filling method and glass fiber yarn filling device of silencer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106481A2 (en) * 1982-09-10 1984-04-25 Unipart Group Limited Packing automobile exhaust silencers
EP0106481A3 (en) * 1982-09-10 1984-07-18 Unipart Group Limited Packing automobile exhaust silencers
EP0146249A2 (en) * 1983-11-18 1985-06-26 TBA Industrial Products Limited Glass fibre products
EP0146249A3 (en) * 1983-11-18 1987-03-25 Tba Industrial Products Limited Glass fibre products
EP0153100A1 (en) * 1984-02-14 1985-08-28 Unipart Group Limited Method of and apparatus for packing exhaust silencer casings
JPS60237113A (en) * 1984-02-14 1985-11-26 ユニパ−ト・グル−プ・リミテツド Method and apparatus for filling casing of exhaust sound arrestor with filler
WO2000017497A1 (en) * 1998-09-18 2000-03-30 Donaldson Company, Inc. Apparatus for installing a packing material in a muffler assembly; and methods thereof
US6148519A (en) * 1998-09-18 2000-11-21 Donaldson Company, Inc. Apparatus for installing a packing material in a muffler assembly; and methods thereof
CN112996989A (en) * 2018-10-12 2021-06-18 科瑞法特股份有限公司 Glass fiber yarn filling method and glass fiber yarn filling device of silencer
CN112996989B (en) * 2018-10-12 2022-08-23 科瑞法特股份有限公司 Glass fiber yarn filling method and glass fiber yarn filling device of silencer

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees