CA2018120A1 - Rock picking machine - Google Patents

Rock picking machine

Info

Publication number
CA2018120A1
CA2018120A1 CA2018120A CA2018120A CA2018120A1 CA 2018120 A1 CA2018120 A1 CA 2018120A1 CA 2018120 A CA2018120 A CA 2018120A CA 2018120 A CA2018120 A CA 2018120A CA 2018120 A1 CA2018120 A1 CA 2018120A1
Authority
CA
Canada
Prior art keywords
frame
rocks
conveyer
grate
picking machine
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.)
Granted
Application number
CA2018120A
Other languages
French (fr)
Other versions
CA2018120C (en
Inventor
Alden Heppner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA002018120A priority Critical patent/CA2018120C/en
Priority to US07/628,016 priority patent/US5141058A/en
Publication of CA2018120A1 publication Critical patent/CA2018120A1/en
Application granted granted Critical
Publication of CA2018120C publication Critical patent/CA2018120C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B43/00—Gatherers for removing stones, undesirable roots or the like from the soil, e.g. tractor-drawn rakes

Abstract

ABSTRACT OF THE DISCLOSURE
An improvement in a rock picking machine having a frame with ground wheels supporting the frame, a table with a grate over which rocks are moved and discharged into a bucket rearwardly pivotally mounted on the frame, and a conveyer forwardly pivotally mounted on the table for moving rocks up the grate. The improvement consists of at least one forwardly and upwardly extending member positioned at a rearward end of the conveyer frame. The member forms a wedge shaped cavity. As large rocks are moved up the grate by the conveyer through the wedge shaped cavity, the rocks engage the member thereby lifting the rearward end of the conveyer frame to provide clearance.
CA002018120A 1990-06-01 1990-06-01 Rock picking machine Expired - Fee Related CA2018120C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002018120A CA2018120C (en) 1990-06-01 1990-06-01 Rock picking machine
US07/628,016 US5141058A (en) 1990-06-01 1990-12-17 Rock picking machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002018120A CA2018120C (en) 1990-06-01 1990-06-01 Rock picking machine

Publications (2)

Publication Number Publication Date
CA2018120A1 true CA2018120A1 (en) 1991-12-01
CA2018120C CA2018120C (en) 1995-01-24

Family

ID=4145126

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002018120A Expired - Fee Related CA2018120C (en) 1990-06-01 1990-06-01 Rock picking machine

Country Status (2)

Country Link
US (1) US5141058A (en)
CA (1) CA2018120C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5296405A (en) * 1985-08-02 1994-03-22 Semiconductor Energy Laboratory Co.., Ltd. Method for photo annealing non-single crystalline semiconductor films
US5753542A (en) 1985-08-02 1998-05-19 Semiconductor Energy Laboratory Co., Ltd. Method for crystallizing semiconductor material without exposing it to air
US5578520A (en) * 1991-05-28 1996-11-26 Semiconductor Energy Laboratory Co., Ltd. Method for annealing a semiconductor
US5291819A (en) * 1992-09-29 1994-03-08 Hambric Harry N Battlefield debris clearing apparatus
US5310008A (en) * 1992-09-29 1994-05-10 Dauvin George A Picker grate for a rock picker
US7097712B1 (en) 1992-12-04 2006-08-29 Semiconductor Energy Laboratory Co., Ltd. Apparatus for processing a semiconductor
CN100367461C (en) 1993-11-05 2008-02-06 株式会社半导体能源研究所 Method of manufacturing thin film transistor and electronic device
US6897100B2 (en) 1993-11-05 2005-05-24 Semiconductor Energy Laboratory Co., Ltd. Method for processing semiconductor device apparatus for processing a semiconductor and apparatus for processing semiconductor device
US5682953A (en) * 1995-08-08 1997-11-04 Buysse; Dale Device for picking and separating rocks

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA699748A (en) * 1964-12-15 Schulte John Rock picking machine
US1454668A (en) * 1921-10-20 1923-05-08 Bugla John Stone-gathering machine
US2860426A (en) * 1954-04-02 1958-11-18 Int Harvester Co Land clearing rake
US3596717A (en) * 1969-09-29 1971-08-03 Valdemar Knudsen Beach-cleaning vehicle
US3739855A (en) * 1971-06-03 1973-06-19 J Bliss Rock picker
US3921375A (en) * 1974-02-25 1975-11-25 Nat Factors Tomato harvesting header attachment for potato combine
US4050518A (en) * 1976-07-01 1977-09-27 Gilmour Richard C Beach cleaning apparatus
US4221265A (en) * 1977-12-09 1980-09-09 Pratt Leslie J Rock picker
US4200408A (en) * 1978-11-13 1980-04-29 Babler Bros., Inc. Windrow pickup attachment for asphalt pavement laying apparatus
US4313502A (en) * 1980-01-24 1982-02-02 Nelson Daniel L Rock extractor apparatus and method
US4593426A (en) * 1983-11-25 1986-06-10 Caravelle Industries, Inc. Litter collection apparatus

Also Published As

Publication number Publication date
US5141058A (en) 1992-08-25
CA2018120C (en) 1995-01-24

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed