CA1059772A - Rock picker windrower assembly - Google Patents
Rock picker windrower assemblyInfo
- Publication number
- CA1059772A CA1059772A CA250,344A CA250344A CA1059772A CA 1059772 A CA1059772 A CA 1059772A CA 250344 A CA250344 A CA 250344A CA 1059772 A CA1059772 A CA 1059772A
- Authority
- CA
- Canada
- Prior art keywords
- framework
- rock
- component
- cylinder
- supporting
- 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
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
- A01B43/005—Windrower-type machines
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sanitary Thin Papers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The device can be used attached to the frame of a rock picker or alternatively can be mounted on a separate wheeled dolly with a rock picker attached therebehind. It comprises an elongated rotatable shaft or cylinder having spirally positioned teeth thereon, mounted in a frame and supported by a pair of castoring wheels. The assembly extends outwardly and forwardly from the rock picker or dolly, preferably one on each side there-of and the shaft or cylinder is connected to a source of power so that it rotates in a direction to gather surface rocks and stones and funnel them towards the center of the dolly or rock picker to be picked up by the rock picker. The use of the de-vice extends the effective width of the rock picker considerably.
The device can be used attached to the frame of a rock picker or alternatively can be mounted on a separate wheeled dolly with a rock picker attached therebehind. It comprises an elongated rotatable shaft or cylinder having spirally positioned teeth thereon, mounted in a frame and supported by a pair of castoring wheels. The assembly extends outwardly and forwardly from the rock picker or dolly, preferably one on each side there-of and the shaft or cylinder is connected to a source of power so that it rotates in a direction to gather surface rocks and stones and funnel them towards the center of the dolly or rock picker to be picked up by the rock picker. The use of the de-vice extends the effective width of the rock picker considerably.
Description
BACKGROUND OF THE IN~JENTI ON
.: .
: 15 This invention relates to new and useful improvements in attachments or additional equipment to be used with a conven-; tional rock picker.
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. ~
Conventional rock pickers are of varying widths but the sweep of the picker is, of course, dependent upon the width and cannot be changed and also it is often desirable to extend ~ ~ the effective width of the rock picker and the present device : enables this to be done.
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One aspect of the invention consists of a windrower ~ ~ attachment for rock pickers and the like adapted to be pivotally ; 25 secured to supporting means, comprising in combination a support-. ~ ~
:
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ing framework connected one upon each side of said supporting means, means to pivot each of said framework by one end thereof to the associated supporting means, means to raise and lower said supporting framework in an arc, from said one end thereof, relative to said supporting means from a rock gathering position to a transport position and vice versa, a rock gathering compon-ent journalled for rotation within said frameworks, and means on said component to move rocks from the ground surface from the outer end of said component towards the inner end thereof, said frameworks and the rock gathering components therein, each ex-tending outwardly and forwardly at an angle from said supporting means, at least when in said rock gathering position.
With the foregoing, in view and other such advantages as will become apparent to those skilled in the art to which ~5 this invention relates as this specification proceeds, my inven-tion consists essentially in the arrangement and construction of parts all as hereinafter more particularly described, reference being had to the accompanying drawings in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic top plan view of a rock picker showing windrower attachments secured to the hitch frame thereof.
.: .
: 15 This invention relates to new and useful improvements in attachments or additional equipment to be used with a conven-; tional rock picker.
"
. ~
Conventional rock pickers are of varying widths but the sweep of the picker is, of course, dependent upon the width and cannot be changed and also it is often desirable to extend ~ ~ the effective width of the rock picker and the present device : enables this to be done.
,...
,. ~
One aspect of the invention consists of a windrower ~ ~ attachment for rock pickers and the like adapted to be pivotally ; 25 secured to supporting means, comprising in combination a support-. ~ ~
:
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ing framework connected one upon each side of said supporting means, means to pivot each of said framework by one end thereof to the associated supporting means, means to raise and lower said supporting framework in an arc, from said one end thereof, relative to said supporting means from a rock gathering position to a transport position and vice versa, a rock gathering compon-ent journalled for rotation within said frameworks, and means on said component to move rocks from the ground surface from the outer end of said component towards the inner end thereof, said frameworks and the rock gathering components therein, each ex-tending outwardly and forwardly at an angle from said supporting means, at least when in said rock gathering position.
With the foregoing, in view and other such advantages as will become apparent to those skilled in the art to which ~5 this invention relates as this specification proceeds, my inven-tion consists essentially in the arrangement and construction of parts all as hereinafter more particularly described, reference being had to the accompanying drawings in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic top plan view of a rock picker showing windrower attachments secured to the hitch frame thereof.
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Figure 2 is an isometric view of one of the windrower attachments in the rock gathering position.
, Figure 3 is an isometric view of a dolly showing one of the windrower attachments in the raised or ~ransport position~
Figure 4 is an enlarged fragmentary top plan view showing one method of driving the windrower cylinder.
In the drawings like characters of reference indicate corresponding parts in the different figures.
:
;
DETAILED DESCRIPTION
Proceeding therefore to describe the ~vention in detail, reference should first be made to Figure 1 which shows the outline of a rock picker 10 including a substantially rectangular frame 11, ground engaging wheels 12 and a forwardly extending hitch frame collectively designated 13. This hitch frame includes the two side members 14 which extend forwardly and inwardly to a common hitch point 15.
Two embodiments of the invention are shown. In Figure 2, a windrower attachment collectively designated 16 is ~S~377Z
shown attached to one of the members 14 of the rock picker 10 and in Figure 3, the windrower collectively designated 16 is shown attached to the dolly collectively designated 17.
This dolly includes a small rear frame 18, ground engaging wheels 19 attached to this frame, and a hitch frame collectively designated 20 extending forwardly of the frame 18. The hitch frame includes a pair of inwardly and forwardly extending members 14A terminating in a common hitch 15A
similar to the frame 13 described with reference to Figure 1, it being understood that the windrower attachments 16 are the same in both cases.
Proceeding therefore to describe the windrower attach-me~t 16, a substantially triangular supporting framework 21 includes a first member 22 and a diagonal member 23 both of which are pivotally attached by the inner ends thereof, between pairs of lugs 24 secured to and extending upwardly from the frame member 14, by means of pivot pins 25~ The primary mem-ber 22 extends substantially at right angles from the member 14 and the diagonal member 23 extends inwardly towards the primary member 22 and joins same at a common apex 26 as clearly shown.
A cross brace 27 extends between members 22 and 23 intermediate the ends thereof and a fluid operator 28 is pivot l~S97~
ally connected by one end thereo~ to a lug 29 on the member 14 and by the piston rod 30 thereof, to a lug 31 extending from the cross member 27.
Extension of this fluid operator 28 will raise the entire assembly upwardly to the position shown in Figure 3 which is a transport position or, retraction of the fluid operator 2B will lower the assembly to the rock gathering position shown in Figure 2.
An inverted U-shaped frame member 32 is secured to the primary member 22 by means of a pivot assembly 33 extending from the frame members 22 and 23 to intermediate the length of the horizontal portion 34 of the U-shaped frame 32.
Castoring wheel assemblies 35 are mounted on parallel linkage 36, to the frame member 32,one adjacent each end there-of and support the windrower attachment upon the ground when in the rock gathering position shown in Figure 2 and the pivot-al attachment 33 enables a self-levelling action to take place to account for uneven ground.
A cylinder or shaft assembly 37 is journalled for rotation between the extremities of the down~turned ends 38 of the frame member 32 and a plurality of rock gathering -teeth or plates 39 extend from the surface of the cylinder in a ~59~772 helical manner as clearly shown in Figure 3.
:
In Figures 2 and 3, a drive is provided for the cylinder 37 through a shaft 40 journalled within bearings 42A
upon the upper side of the horizontal member 34 and this shaft 40 is operatively connected to the drive means for the rock picker (not illustrated).
A chain sprocket 41 is secured to shaft 40 and a further chain sprocket 42 is secured to the stub shafts 43 mounting the cylinder 37 for rotation. An endless chain 44 extends around sprockets 41 and 42 and supplies rotational drive to the cylinder 37.
Reference to Figure 4 will show the preferred drive method for the cylinder 37 taking the form of an hydraulic motor 45 mounted upon the member 32 and connected to sprocket 41 by means of the drive shaft 40A supported within bearing a~semblies 42.
' When in the lowermost or rock gathering position, the windrower attachments are situated substantially as illus-trated in Figure 1 extending outwardly and forwardly of the associated rock picker or the dolly 17, as the case may be.
:
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The rotation of the cylinders 37 is such that any rocks on the surface of the ground upon which the device is moving, are pieked up by the helically positioned teeth and moved from the outer end of the windrower towards the eenter thereof so that they can be gathered up by the rock picker.
The use of these attachments extend the effective width of the rock picker considerably whether they are attached directly to the rock picker hitch as shown in Figure 1 or to a dolly 17 as shown in Figure 3. If used in eonjunetion with ; 10 a dolly 17, then it will be appxeeiated that a eonventional roek pieker is situated behind the dolly so that the rocks gathered by the windrowers are picked up and treated by the rock pieker.
When it is desired to transport the machine, the fluid operators 28 are extended thus raising the two windrowers assemblies 16 to the substantially vertical position, shGwn in Figure 3 whereupon they may be transported readily and easily.
Since various modifications can be made in my inven-tion as hereinabove described, and many apparently widelydifferent embodiments of same made within the spirit and seope of the elaims without departing from sueh spirit and seope, it is intended that all matter eontained in the aeeompanying speeification shall be interpreted as illustrative only and not in a limiting sense.
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Figure 2 is an isometric view of one of the windrower attachments in the rock gathering position.
, Figure 3 is an isometric view of a dolly showing one of the windrower attachments in the raised or ~ransport position~
Figure 4 is an enlarged fragmentary top plan view showing one method of driving the windrower cylinder.
In the drawings like characters of reference indicate corresponding parts in the different figures.
:
;
DETAILED DESCRIPTION
Proceeding therefore to describe the ~vention in detail, reference should first be made to Figure 1 which shows the outline of a rock picker 10 including a substantially rectangular frame 11, ground engaging wheels 12 and a forwardly extending hitch frame collectively designated 13. This hitch frame includes the two side members 14 which extend forwardly and inwardly to a common hitch point 15.
Two embodiments of the invention are shown. In Figure 2, a windrower attachment collectively designated 16 is ~S~377Z
shown attached to one of the members 14 of the rock picker 10 and in Figure 3, the windrower collectively designated 16 is shown attached to the dolly collectively designated 17.
This dolly includes a small rear frame 18, ground engaging wheels 19 attached to this frame, and a hitch frame collectively designated 20 extending forwardly of the frame 18. The hitch frame includes a pair of inwardly and forwardly extending members 14A terminating in a common hitch 15A
similar to the frame 13 described with reference to Figure 1, it being understood that the windrower attachments 16 are the same in both cases.
Proceeding therefore to describe the windrower attach-me~t 16, a substantially triangular supporting framework 21 includes a first member 22 and a diagonal member 23 both of which are pivotally attached by the inner ends thereof, between pairs of lugs 24 secured to and extending upwardly from the frame member 14, by means of pivot pins 25~ The primary mem-ber 22 extends substantially at right angles from the member 14 and the diagonal member 23 extends inwardly towards the primary member 22 and joins same at a common apex 26 as clearly shown.
A cross brace 27 extends between members 22 and 23 intermediate the ends thereof and a fluid operator 28 is pivot l~S97~
ally connected by one end thereo~ to a lug 29 on the member 14 and by the piston rod 30 thereof, to a lug 31 extending from the cross member 27.
Extension of this fluid operator 28 will raise the entire assembly upwardly to the position shown in Figure 3 which is a transport position or, retraction of the fluid operator 2B will lower the assembly to the rock gathering position shown in Figure 2.
An inverted U-shaped frame member 32 is secured to the primary member 22 by means of a pivot assembly 33 extending from the frame members 22 and 23 to intermediate the length of the horizontal portion 34 of the U-shaped frame 32.
Castoring wheel assemblies 35 are mounted on parallel linkage 36, to the frame member 32,one adjacent each end there-of and support the windrower attachment upon the ground when in the rock gathering position shown in Figure 2 and the pivot-al attachment 33 enables a self-levelling action to take place to account for uneven ground.
A cylinder or shaft assembly 37 is journalled for rotation between the extremities of the down~turned ends 38 of the frame member 32 and a plurality of rock gathering -teeth or plates 39 extend from the surface of the cylinder in a ~59~772 helical manner as clearly shown in Figure 3.
:
In Figures 2 and 3, a drive is provided for the cylinder 37 through a shaft 40 journalled within bearings 42A
upon the upper side of the horizontal member 34 and this shaft 40 is operatively connected to the drive means for the rock picker (not illustrated).
A chain sprocket 41 is secured to shaft 40 and a further chain sprocket 42 is secured to the stub shafts 43 mounting the cylinder 37 for rotation. An endless chain 44 extends around sprockets 41 and 42 and supplies rotational drive to the cylinder 37.
Reference to Figure 4 will show the preferred drive method for the cylinder 37 taking the form of an hydraulic motor 45 mounted upon the member 32 and connected to sprocket 41 by means of the drive shaft 40A supported within bearing a~semblies 42.
' When in the lowermost or rock gathering position, the windrower attachments are situated substantially as illus-trated in Figure 1 extending outwardly and forwardly of the associated rock picker or the dolly 17, as the case may be.
:
~ 1359~77Z
The rotation of the cylinders 37 is such that any rocks on the surface of the ground upon which the device is moving, are pieked up by the helically positioned teeth and moved from the outer end of the windrower towards the eenter thereof so that they can be gathered up by the rock picker.
The use of these attachments extend the effective width of the rock picker considerably whether they are attached directly to the rock picker hitch as shown in Figure 1 or to a dolly 17 as shown in Figure 3. If used in eonjunetion with ; 10 a dolly 17, then it will be appxeeiated that a eonventional roek pieker is situated behind the dolly so that the rocks gathered by the windrowers are picked up and treated by the rock pieker.
When it is desired to transport the machine, the fluid operators 28 are extended thus raising the two windrowers assemblies 16 to the substantially vertical position, shGwn in Figure 3 whereupon they may be transported readily and easily.
Since various modifications can be made in my inven-tion as hereinabove described, and many apparently widelydifferent embodiments of same made within the spirit and seope of the elaims without departing from sueh spirit and seope, it is intended that all matter eontained in the aeeompanying speeification shall be interpreted as illustrative only and not in a limiting sense.
-- 7 ~
Claims
WHAT I CLAIM AS MY INVENTION IS:
(1) A windrower attachment for rock pickers and the like adapted to be pivotally secured to supporting means; com-prising in combination a supporting framework connected one upon each side of said supporting means, means to pivot each of said framework by one end thereof to the associated supporting means, means to raise and lower said supporting framework in an arc, from said one end thereof, relative to said supporting means from a rock gathering position to a transport position and vice versa, a rock gathering component journalled for rotation within each said framework, means to rotate said components within said frameworks, and means on said component to move rocks from the ground surface from the outer end of said component towards the inner end thereof, said frameworks and the rock gathering com-ponents therein, each extending outwardly and forwardly at an angle from said supporting means, at least when in said rock gathering position.
(2) The attachment according to Claim 1 which includes ground engaging castor wheels supporting each said framework when in the rock gathering position.
(3) The attachment according to Claim 1 in which said components each include an elongated cylinder journalled for ro-tation within said framework and a plurality of rock gathering teeth secured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(4) The attachment according to Claim 2 in which said component each include an elongated cylinder journalled for ro-tation within said framework and a plurality of rock gathering teeth secured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(5) A rock picker including a forwardly extending hitch frame and a windrower attachment secured to and extending from at least one side of said hitch frame, said windrower attach-ment including a supporting framework, means to pivot said sup-porting framework by one end thereof to the associated hitch frame, means to raise and lower said supporting framework in an arc about said one end, relative to said hitch frame from a rock gathering position to a transport position and vice versa, a rock gathering component journalled for rotation within said framework, means to rotate said component within said framework, and means on said component to move rocks from the ground surface from the outer end of said component towards the inner end there-of, said supporting framework and said rock gathering component therein extending outwardly and forwardly at an angle from said associated hitch frame at least when in said rock gathering po-sition.
(6) The invention according to Claim 5 which includes ground engaging castor wheels supporting said framework when in the rock gathering position.
(7) The invention according to Claim 5 in which said component includes an elongated cylinder journalled for rotation within said framework and a plurality of rock gathering teeth secured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(8) The invention according to Claim 6 in which said component includes an elongated cylinder journalled for rotation within said framework and a plurality of rock gathering teeth se-cured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(9) Rock gathering means for an associated rock picker comprising in combination a support dolly, said dolly including a frame, a pair of ground engaging wheels supporting the frame at the rear end thereof, to hitch frame at the front end thereof, a windrower attachment upon said frame, said windrower attachment comprising in combination a supporting framework, secured by one end thereof to said frame, means to pivot said supporting frame-work to said hitch frame, by said one end thereof, means to raise and lower said supporting framework relative to said hitch frame from a rock gathering position to a transport position and vice versa, a rock gathering component journalled for rotation within said framework, means to rotate said component within said frame-work, and means to rotate said component within said framework, and means on said component to move rocks from the ground surface from the outer end of said component towards the inner end thereof, said framework and said rock gathering component therein extend-ing outwardly and forwardly at an angle from said supporting means, at least when in said rock gathering position.
(10) The invention according to Claim 9 which includes ground engaging castor wheels supporting said framework when in the rock gathering position.
(11) The invention according to Claim 9 in which said component includes an elongated cylinder journalled for rotation within said framework and a plurality of rock gathering teeth se-cured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(12) The invention according to Claim 10 in which said component includes an elongated cylinder journalled for rotation within said framework and a plurality of rock gathering teeth se-cured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(1) A windrower attachment for rock pickers and the like adapted to be pivotally secured to supporting means; com-prising in combination a supporting framework connected one upon each side of said supporting means, means to pivot each of said framework by one end thereof to the associated supporting means, means to raise and lower said supporting framework in an arc, from said one end thereof, relative to said supporting means from a rock gathering position to a transport position and vice versa, a rock gathering component journalled for rotation within each said framework, means to rotate said components within said frameworks, and means on said component to move rocks from the ground surface from the outer end of said component towards the inner end thereof, said frameworks and the rock gathering com-ponents therein, each extending outwardly and forwardly at an angle from said supporting means, at least when in said rock gathering position.
(2) The attachment according to Claim 1 which includes ground engaging castor wheels supporting each said framework when in the rock gathering position.
(3) The attachment according to Claim 1 in which said components each include an elongated cylinder journalled for ro-tation within said framework and a plurality of rock gathering teeth secured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(4) The attachment according to Claim 2 in which said component each include an elongated cylinder journalled for ro-tation within said framework and a plurality of rock gathering teeth secured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(5) A rock picker including a forwardly extending hitch frame and a windrower attachment secured to and extending from at least one side of said hitch frame, said windrower attach-ment including a supporting framework, means to pivot said sup-porting framework by one end thereof to the associated hitch frame, means to raise and lower said supporting framework in an arc about said one end, relative to said hitch frame from a rock gathering position to a transport position and vice versa, a rock gathering component journalled for rotation within said framework, means to rotate said component within said framework, and means on said component to move rocks from the ground surface from the outer end of said component towards the inner end there-of, said supporting framework and said rock gathering component therein extending outwardly and forwardly at an angle from said associated hitch frame at least when in said rock gathering po-sition.
(6) The invention according to Claim 5 which includes ground engaging castor wheels supporting said framework when in the rock gathering position.
(7) The invention according to Claim 5 in which said component includes an elongated cylinder journalled for rotation within said framework and a plurality of rock gathering teeth secured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(8) The invention according to Claim 6 in which said component includes an elongated cylinder journalled for rotation within said framework and a plurality of rock gathering teeth se-cured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(9) Rock gathering means for an associated rock picker comprising in combination a support dolly, said dolly including a frame, a pair of ground engaging wheels supporting the frame at the rear end thereof, to hitch frame at the front end thereof, a windrower attachment upon said frame, said windrower attachment comprising in combination a supporting framework, secured by one end thereof to said frame, means to pivot said supporting frame-work to said hitch frame, by said one end thereof, means to raise and lower said supporting framework relative to said hitch frame from a rock gathering position to a transport position and vice versa, a rock gathering component journalled for rotation within said framework, means to rotate said component within said frame-work, and means to rotate said component within said framework, and means on said component to move rocks from the ground surface from the outer end of said component towards the inner end thereof, said framework and said rock gathering component therein extend-ing outwardly and forwardly at an angle from said supporting means, at least when in said rock gathering position.
(10) The invention according to Claim 9 which includes ground engaging castor wheels supporting said framework when in the rock gathering position.
(11) The invention according to Claim 9 in which said component includes an elongated cylinder journalled for rotation within said framework and a plurality of rock gathering teeth se-cured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
(12) The invention according to Claim 10 in which said component includes an elongated cylinder journalled for rotation within said framework and a plurality of rock gathering teeth se-cured to and extending from the surface of said cylinder in a helix along said cylinder, said cylinders rotating to move rocks towards the said one ends of said frameworks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA250,344A CA1059772A (en) | 1976-04-15 | 1976-04-15 | Rock picker windrower assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA250,344A CA1059772A (en) | 1976-04-15 | 1976-04-15 | Rock picker windrower assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1059772A true CA1059772A (en) | 1979-08-07 |
Family
ID=4105719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA250,344A Expired CA1059772A (en) | 1976-04-15 | 1976-04-15 | Rock picker windrower assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1059772A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4301869A (en) * | 1980-04-10 | 1981-11-24 | Gerald Dubois | Stone picking machine |
| US4496003A (en) * | 1983-01-03 | 1985-01-29 | Bynum Colonel N | Rock gathering apparatus |
| US4609050A (en) * | 1984-02-24 | 1986-09-02 | Jacobs Maurice A | Root and rock picker |
-
1976
- 1976-04-15 CA CA250,344A patent/CA1059772A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4301869A (en) * | 1980-04-10 | 1981-11-24 | Gerald Dubois | Stone picking machine |
| US4496003A (en) * | 1983-01-03 | 1985-01-29 | Bynum Colonel N | Rock gathering apparatus |
| US4609050A (en) * | 1984-02-24 | 1986-09-02 | Jacobs Maurice A | Root and rock picker |
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