EP0093576A2 - A screening apparatus - Google Patents
A screening apparatus Download PDFInfo
- Publication number
- EP0093576A2 EP0093576A2 EP83302385A EP83302385A EP0093576A2 EP 0093576 A2 EP0093576 A2 EP 0093576A2 EP 83302385 A EP83302385 A EP 83302385A EP 83302385 A EP83302385 A EP 83302385A EP 0093576 A2 EP0093576 A2 EP 0093576A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- conveyor
- screen device
- section
- forward section
- sections
- 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.)
- Withdrawn
Links
- 238000012216 screening Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 abstract description 9
- 239000002245 particle Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000011236 particulate material Substances 0.000 description 2
- 239000002956 ash Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- -1 gravel Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/005—Transportable screening plants
Definitions
- the present invention relates to an apparatus for separating particulate material into particles of different sizes, and such apparatus will hereinafter be referred to as a screening apparatus.
- a screening apparatus possesses a considerable number of different applications, but it is particularly suitable for separating material such as sand, gravel, stone, coal, ash, soil and particulate minerals.
- the material to be screened is fed onto the input stage of an elongate conveyor which conveys the material to a screen device for separating the material into particles of different sizes.
- the separated materials are then either deposited at different locations on the ground, or passed onto associated separate conveyors which convey the particles of different sizes to locations which are remote from one another.
- the conveyor comprises a rear section and a forward section pivotally connected to one another, and the screen device is pivotally connected to the output stage of the conveyor forward section.
- the conveyor forward section is folded back onto the conveyor rear section, and the screen device is folded back on the folded conveyor forward section. Difficulties can arise in carrying out this folding operation because of the weight of the conveyor. For example it has sometimes been found necessary to employ a crane to assist in carrying out the aforementioned folding operation.
- a screening apparatus as herein defined comprising an elongate conveyor having a rear section pivotally mounted on a wheeled chassis, and a forward section telescopically connected to the rear section, and a screen device pivotally connected to the output stage of the forward section whereby the conveyor sections and screen device are movable between an operational position in which the conveyor sections and screen device are extended, and a transporting position in which the conveyor sections are telescoped and the screen device is folded back on the conveyor forward section.
- the term “telescoped” is intended to include the case where only a small part of the conveyor forward section is located in the conveyor rear section. It is to be clearly understood that the term “telescoped” is not restricted to the case where all or a major part of the conveyor forward section is located in the conveyor rear section.
- the apparatus includes a chassis 2 mounted on four ground wheels 4; the rear ground wheels 4 being mounted on legs 6.
- the ground wheels 4 and the legs 6 are dimensioned and arranged so that the chassis 2 is substantially parallel to the ground when resting on the ground wheels 4.
- An input hopper 8 for receiving the particulate material to be separated is mounted on the rear part of the chassis 2, and this hopper 8 is dimensioned and shaped so that it can readily be fed from a conventional earth moving lorry.
- a conveyor 10 is adjustably mounted on the chassis 2 so that when in its operational position illustrated in Figure 1 it extends forwardly and upwardly from the hopper outlet, and when in its inspection position and transporting position illustrated in Figures 2 and 3 respectively it extends forwardly and only slightly above the horizontal position from the hopper outlet.
- the conveyor 10 includes a rear section 12 pivotally mounted at its rear end to the chassis 2, and a forward section 14 telescopically connected to the rear section 12.
- the conveyor 10 includes an endless belt 16 which is guided and powered by spaced troughing rollers 18 which are mounted on the conveyor rear and forward sections 12 and 14.
- An hydraulic jacking cylinder 20 is mounted on a forward part of the wheeled chassis 2 and is connected at its upper end to a jib 22 on the forward end of the conveyor rear section 12.
- the conveyor rear section 12 has a transverse cross section which is generally rectangular with a central longitudinal gap in its lower face thereby forming two transversely spaced housings.
- the conveyor forward section 14 includes two transversely spaced box girders 24 which are retained by transverse members so that these box girders 24 can slide in their respective housings of the conveyor rear section 12.
- the conveyor forward section 14 also includes two strut bars 26 which are connected to their respective box girders 24 by connecting bars 28.
- a screen device 30 includes a support base 32 pivotally coupled at its rear to a mounting 34 secured to the output stage of the conveyor forward section 14.
- the screen device is of conventional form and consequently will not be herein described in detail.
- the support base 32 is coupled to the conveyor forward section 14 by a hydraulic ram 36 which is operable to vary the inclination of the screen device 30 in relation to that of the conveyor forward section 14.
- Detachable bolts are used in mounting the strut bar 26, the connecting bars 28, and connecting the hydraulic ram 36 to the strut bar 26.
- the jacking cylinder 20 is operated to lower the conveyor 10 so that the screen device 30 can be pivoted clockwise and still just clear the ground.
- the two sets of troughing rollers 38 are removed from the conveyor forward section 14, and the strut bars 26 and the connecting bars 28 are removed from the box girders 24.
- the hydraulic ram 36 is disconnected from the strut "bars 26 and is contracted so as to be of a convenient length for storing the screen device 30.
- the conveyor forward section 14 is partially telescoped into the conveyor rear section 12, and the screen device 30 is pivoted clockwise and bolted to the jib 22 thereby forming a substantially rigid structure with the conveyor rear section 12.
- the conveyor forward section 14 has two rollers mounted on its box girders 24 to run in respective housings of the conveyor rear section 12 thereby facilitating the movement of the forward section 14 into and out of the rear section 12.
- the screen device 30 can be bolted to the jib 22 by the bolts previously used to secure the strut bars 26 and the connecting bars 28.
- the screening apparatus can now be towed by any suitable vehicle such as for example a tractor.
- any suitable vehicle such as for example a tractor.
Landscapes
- Framework For Endless Conveyors (AREA)
- Combined Means For Separation Of Solids (AREA)
- Refuse Collection And Transfer (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Glass Compositions (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
A screening apparatus includes a conveyor (10) pivotally mounted at its rear end on a wheeled chassis (2). The conveyor (10) includes a rear section (12) and a forward section (14) telescopically connected to the rear section (12). An endless belt (16) is guided and powered by spaced rollers (18) mounted on the conveyor rear and forward sections (12) and (14). The conveyor (10) is moved between its operational and transporting positions by a jacking cylinder (20). A screen device (30) is pivotally coupled to the output stage of the forward section (14), and is controlled by a ram (36). A hopper (8) for receiving the material to be separated is mounted on the chassis (2). To convert the apparatus from its operational position to its transporting position, the jacking cylinder (20) lowers the conveyor (10), two sets of troughing rollers (38) are removed from the forward section (14), and the ram (36) is disconnected from the forward section (14). This forward section (14) is partially telescoped into the rear section (12), and the screen device (30) is pivoted clockwise and bolted to the rear section (12).
Description
- The present invention relates to an apparatus for separating particulate material into particles of different sizes, and such apparatus will hereinafter be referred to as a screening apparatus. A screening apparatus possesses a considerable number of different applications, but it is particularly suitable for separating material such as sand, gravel, stone, coal, ash, soil and particulate minerals.
- In a previously proposed screening apparatus, the material to be screened is fed onto the input stage of an elongate conveyor which conveys the material to a screen device for separating the material into particles of different sizes. The separated materials are then either deposited at different locations on the ground, or passed onto associated separate conveyors which convey the particles of different sizes to locations which are remote from one another.
- In order to prevent the separated material from becoming inadvertently mixed with the initial unseparated material it is desirable for the separated material to be deposited at a reasonable distance from the input stage of the conveyor. Consequently it is necessary for the conveyor to be of a considerable length, and the combined length of the conveyor and the screen device extending therefrom can cause difficulties in transporting the screening apparatus on a public highway or for any appreciable distance on site.
- In a previously proposed screening apparatus the conveyor comprises a rear section and a forward section pivotally connected to one another, and the screen device is pivotally connected to the output stage of the conveyor forward section. In order to place the screening apparatus in its transporting condition, the conveyor forward section is folded back onto the conveyor rear section, and the screen device is folded back on the folded conveyor forward section. Difficulties can arise in carrying out this folding operation because of the weight of the conveyor. For example it has sometimes been found necessary to employ a crane to assist in carrying out the aforementioned folding operation.
- It is an aim of the invention to alleviate the aforementioned difficulties, and accordingly there is provided a screening apparatus as herein defined comprising an elongate conveyor having a rear section pivotally mounted on a wheeled chassis, and a forward section telescopically connected to the rear section, and a screen device pivotally connected to the output stage of the forward section whereby the conveyor sections and screen device are movable between an operational position in which the conveyor sections and screen device are extended, and a transporting position in which the conveyor sections are telescoped and the screen device is folded back on the conveyor forward section.
- The term "telescoped" is intended to include the case where only a small part of the conveyor forward section is located in the conveyor rear section. It is to be clearly understood that the term "telescoped" is not restricted to the case where all or a major part of the conveyor forward section is located in the conveyor rear section.
- One embodiment of a screening apparatus of the invention will now be described by way of example with reference to the accompanying illustrative drawings in which:-
- FIGURE 1 is a side elevation of a screening apparatus in its operational position,
- FIGURE-2 is a side elevation of the screening apparatus of Figure 1 in its inspection position, and
- FIGURE 3 is a side elevation of the screening apparatus of Figure 1 in its transporting position.
- Referring to the drawings, the apparatus includes a chassis 2 mounted on four
ground wheels 4; therear ground wheels 4 being mounted on legs 6. As will be seen from the drawings, theground wheels 4 and the legs 6 are dimensioned and arranged so that the chassis 2 is substantially parallel to the ground when resting on theground wheels 4. - An input hopper 8 for receiving the particulate material to be separated is mounted on the rear part of the chassis 2, and this hopper 8 is dimensioned and shaped so that it can readily be fed from a conventional earth moving lorry. A
conveyor 10 is adjustably mounted on the chassis 2 so that when in its operational position illustrated in Figure 1 it extends forwardly and upwardly from the hopper outlet, and when in its inspection position and transporting position illustrated in Figures 2 and 3 respectively it extends forwardly and only slightly above the horizontal position from the hopper outlet. Theconveyor 10 includes arear section 12 pivotally mounted at its rear end to the chassis 2, and aforward section 14 telescopically connected to therear section 12. Theconveyor 10 includes anendless belt 16 which is guided and powered by spacedtroughing rollers 18 which are mounted on the conveyor rear andforward sections cylinder 20 is mounted on a forward part of the wheeled chassis 2 and is connected at its upper end to ajib 22 on the forward end of the conveyorrear section 12. - The conveyor
rear section 12 has a transverse cross section which is generally rectangular with a central longitudinal gap in its lower face thereby forming two transversely spaced housings. The conveyorforward section 14 includes two transversely spacedbox girders 24 which are retained by transverse members so that thesebox girders 24 can slide in their respective housings of the conveyorrear section 12. The conveyorforward section 14 also includes twostrut bars 26 which are connected to theirrespective box girders 24 by connectingbars 28. - A
screen device 30 includes asupport base 32 pivotally coupled at its rear to amounting 34 secured to the output stage of the conveyorforward section 14. The screen device is of conventional form and consequently will not be herein described in detail. Thesupport base 32 is coupled to the conveyorforward section 14 by ahydraulic ram 36 which is operable to vary the inclination of thescreen device 30 in relation to that of the conveyorforward section 14. Detachable bolts are used in mounting thestrut bar 26, the connectingbars 28, and connecting thehydraulic ram 36 to thestrut bar 26. - To transfer the screening apparatus from the operational position to its transporting position, the jacking
cylinder 20 is operated to lower theconveyor 10 so that thescreen device 30 can be pivoted clockwise and still just clear the ground. The two sets oftroughing rollers 38 are removed from the conveyorforward section 14, and thestrut bars 26 and the connectingbars 28 are removed from thebox girders 24. Thehydraulic ram 36 is disconnected from the strut "bars 26 and is contracted so as to be of a convenient length for storing thescreen device 30. The conveyorforward section 14 is partially telescoped into the conveyorrear section 12, and thescreen device 30 is pivoted clockwise and bolted to thejib 22 thereby forming a substantially rigid structure with the conveyorrear section 12. The conveyorforward section 14 has two rollers mounted on itsbox girders 24 to run in respective housings of the conveyorrear section 12 thereby facilitating the movement of theforward section 14 into and out of therear section 12. Thescreen device 30 can be bolted to thejib 22 by the bolts previously used to secure thestrut bars 26 and the connectingbars 28. - It will be appreciated that the screening apparatus can now be towed by any suitable vehicle such as for example a tractor. To convert the screening apparatus from its transporting position to its operational position the aforementioned operational steps are carried out in reverse order.
Claims (8)
1. A screening apparatus as herein defined comprising an elongate conveyor having a rear section pivotally mounted on a wheeled chassis, and a forward section telescopically connected to the rear section, and a screen device pivotally connected to the output stage of the forward section whereby the conveyor sections and screen device are movable between an operational position in which the conveyor sections and screen device are extended, and a transporting position in which the conveyor sections are telescoped and the screen device is folded back on the conveyor forward section.
2. An apparatus as claimed in Claim 1 in which the conveyor sections and screen device are parallel to one another when in the transporting position.
3. An apparatus as claimed in Claim 1 or Claim 2 including jacking means extending between the wheeled chassis and the conveyor rear section to enable the conveyor to move between said operational and transporting positions.
4. An apparatus as claimed in any preceding Claim including a ram extending between the screen device and the conveyor forward section to enable the screen device to move between said operational and transporting positions.
5. An apparatus as claimed in any preceding Claim in which the conveyor rear section includes transversely spaced housings and the conveyor forward section includes transversely spaced members arranged to slide in said housings.
6. An apparatus as claimed in any preceding Claim in which the screen device is pivotally connected at its rear to the output stage of the conveyor forward section.
7. An apparatus as claimed in Claim 6 inlcuding fastening means to secure the forward portion of the screen device to the forward end of the conveyor rear section to retain the screen device in the transporting position.
8. An apparatus as claimed in any preceding Claim including spaced troughing rollers mounted on the conveyor rear and forward sections, in which at least some of the troughing rollers on the forward section are removable to facilitate the telescoping of the conveyor rear and forward sections.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8212607 | 1982-04-30 | ||
GB08212607A GB2119290B (en) | 1982-04-30 | 1982-04-30 | Screening apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0093576A2 true EP0093576A2 (en) | 1983-11-09 |
EP0093576A3 EP0093576A3 (en) | 1984-05-09 |
Family
ID=10530096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83302385A Withdrawn EP0093576A3 (en) | 1982-04-30 | 1983-04-27 | A screening apparatus |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0093576A3 (en) |
AU (1) | AU553113B2 (en) |
CA (1) | CA1201084A (en) |
DK (1) | DK190783A (en) |
GB (1) | GB2119290B (en) |
IE (1) | IE54184B1 (en) |
NO (1) | NO831483L (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0203813A1 (en) * | 1985-05-28 | 1986-12-03 | Powerscreen Limited | Conveyor assembly |
US6698594B2 (en) * | 2002-03-18 | 2004-03-02 | Ohio Central Steel Company | Screening machine |
CN102580920A (en) * | 2012-03-07 | 2012-07-18 | 河南新友公路技术有限公司 | Grading, screening and feeding integrated machine |
CN102616526A (en) * | 2012-03-16 | 2012-08-01 | 安徽省恒康机械制造有限公司 | Piece counting metering device |
WO2013102699A1 (en) * | 2012-01-03 | 2013-07-11 | Metso Minerals, Inc. | Material processing plant |
US8783443B2 (en) | 2012-01-03 | 2014-07-22 | Metso Minerals, Inc. | Material processing plant |
CN107973054A (en) * | 2017-10-31 | 2018-05-01 | 重庆江源油橄榄开发有限公司 | Olive oil making apparatus |
WO2024077317A1 (en) * | 2022-10-10 | 2024-04-18 | Rubble Master Hmh Gmbh | Mobile device for processing materials |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8718161D0 (en) * | 1987-07-31 | 1987-09-09 | Trakweld Fabrication Ltd | Screening apparatus |
GB2306128A (en) * | 1995-10-13 | 1997-04-30 | Extec Screens & Crushers Ltd | Mobile Screening Apparatus |
US5979666A (en) * | 1996-06-28 | 1999-11-09 | Douglas; Patrick J. | Apparatus for screening particulate material |
WO1999049976A2 (en) | 1998-04-01 | 1999-10-07 | Douglas Patrick J | Material processing plant |
CN103285978A (en) * | 2013-06-21 | 2013-09-11 | 严春玲 | Fully-automatic tube mill grinding body screening grading apparatus |
CN114570653B (en) * | 2022-05-07 | 2022-09-27 | 徐州世威隆盛建设工程有限公司 | Granularity intelligence screening conveyor is used in recycled concrete production |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB531475A (en) * | 1939-06-14 | 1941-01-06 | Austin Hoy & Co Ltd | Improvements in or relating to chain mining machines and conveying devices for use therewith |
GB1027606A (en) * | 1963-11-09 | 1966-04-27 | Davies Pritchard & Richmond Lt | Improvements in or relating to extendible and retractible endless conveyors |
US3365050A (en) * | 1965-07-22 | 1968-01-23 | Machinery Inc | Portable gravel handling apparatus |
US4190526A (en) * | 1978-01-05 | 1980-02-26 | Pioneer Cover-All, Inc. | Portable screening plant |
EP0019434A1 (en) * | 1979-05-16 | 1980-11-26 | John Finlay (Engineering) Limited | A screening apparatus |
-
1982
- 1982-04-30 GB GB08212607A patent/GB2119290B/en not_active Expired
-
1983
- 1983-04-18 IE IE87683A patent/IE54184B1/en unknown
- 1983-04-26 AU AU13917/83A patent/AU553113B2/en not_active Ceased
- 1983-04-27 EP EP83302385A patent/EP0093576A3/en not_active Withdrawn
- 1983-04-27 NO NO831483A patent/NO831483L/en unknown
- 1983-04-27 CA CA000426871A patent/CA1201084A/en not_active Expired
- 1983-04-28 DK DK190783A patent/DK190783A/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB531475A (en) * | 1939-06-14 | 1941-01-06 | Austin Hoy & Co Ltd | Improvements in or relating to chain mining machines and conveying devices for use therewith |
GB1027606A (en) * | 1963-11-09 | 1966-04-27 | Davies Pritchard & Richmond Lt | Improvements in or relating to extendible and retractible endless conveyors |
US3365050A (en) * | 1965-07-22 | 1968-01-23 | Machinery Inc | Portable gravel handling apparatus |
US4190526A (en) * | 1978-01-05 | 1980-02-26 | Pioneer Cover-All, Inc. | Portable screening plant |
EP0019434A1 (en) * | 1979-05-16 | 1980-11-26 | John Finlay (Engineering) Limited | A screening apparatus |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0203813A1 (en) * | 1985-05-28 | 1986-12-03 | Powerscreen Limited | Conveyor assembly |
US4879023A (en) * | 1985-05-28 | 1989-11-07 | Powerscreen International Limited | Conveyor assembly |
US6698594B2 (en) * | 2002-03-18 | 2004-03-02 | Ohio Central Steel Company | Screening machine |
WO2013102699A1 (en) * | 2012-01-03 | 2013-07-11 | Metso Minerals, Inc. | Material processing plant |
US8783443B2 (en) | 2012-01-03 | 2014-07-22 | Metso Minerals, Inc. | Material processing plant |
CN102580920A (en) * | 2012-03-07 | 2012-07-18 | 河南新友公路技术有限公司 | Grading, screening and feeding integrated machine |
CN102580920B (en) * | 2012-03-07 | 2013-09-25 | 河南新友公路技术有限公司 | Grading, screening and feeding integrated machine |
CN102616526A (en) * | 2012-03-16 | 2012-08-01 | 安徽省恒康机械制造有限公司 | Piece counting metering device |
CN107973054A (en) * | 2017-10-31 | 2018-05-01 | 重庆江源油橄榄开发有限公司 | Olive oil making apparatus |
CN107973054B (en) * | 2017-10-31 | 2019-04-19 | 重庆江源油橄榄开发有限公司 | Olive oil making apparatus |
WO2024077317A1 (en) * | 2022-10-10 | 2024-04-18 | Rubble Master Hmh Gmbh | Mobile device for processing materials |
Also Published As
Publication number | Publication date |
---|---|
AU553113B2 (en) | 1986-07-03 |
NO831483L (en) | 1983-10-31 |
CA1201084A (en) | 1986-02-25 |
IE830876L (en) | 1983-10-30 |
EP0093576A3 (en) | 1984-05-09 |
DK190783A (en) | 1983-10-31 |
GB2119290A (en) | 1983-11-16 |
AU1391783A (en) | 1983-11-03 |
IE54184B1 (en) | 1989-07-05 |
GB2119290B (en) | 1985-09-11 |
DK190783D0 (en) | 1983-04-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19841106 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19851002 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FINLAY, JOHN ALEXANDER |