Patent US3693734A successfully refreshed from Google Patents.
US3693734A
Expired / Lapsed
US
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Boring auger for horizontal earth boring machine
Assignee: Richmond Manufacturing Co
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Filing: 1970-10-30
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Granted: 1972-09-26
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Expires: 1990-10-30
Abstract
Abstract A portable earth boring machine adapted for horizontal boring of shafts for the insertion of pipelines in installations where excavation from the surface is undesirable. The machine is characterized by a novel earth boring auger for effectively drilling pipeline holes under difficult earth conditions such as are encountered in boring earth of hard rock content. The novel auger comprises a base plate, spaced auger side plates forming rigid gussets, with such plates providing bit mounting surfaces for a unique and efficient array of a plurality of bits mounted on the auger.
Inventors
- 👤 Albert R Richmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:29
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/20; E21B7/201; E21B10/00; E21B10/44
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
173 words
A portable earth boring machine comprising, in combination, base means including spaced track members; a carriage means mounted for movement along said track members; a fLuid motor for driving said carriage means along said track members; an engine mounted on said carriage means including an engine drive shaft; a speed varying unit mounted on said carriage means and including an input shaft driven by said engine drive shaft and an output shaft; auger connecting shaft means including a rear end driven by said output shaft and a front end; auger means driven by said front end of said auger connecting shaft means and including a forwardly and inwardly inclined bit mounting side surface, a plurality of rotatable side bit members inclined forwardly with respect to the path of rotation of said side surface mounted along the longitudinal extent of said bit mounting surface in side by side relationship, an auger tip portion including a tip bit member; and an auger base portion including a base bit member extending radially of said base portion.
Claim 2
Dependent Claim
173 words
A portable earth boring machine comprising, in combination, base means including spaced track members; a carriage means mounted for movement along said track members; a fLuid motor for driving said carriage means along said track members; an engine mounted on said carriage means including an engine drive shaft; a speed varying unit mounted on said carriage means and including an input shaft driven by said engine drive shaft and an output shaft; auger connecting shaft means including a rear end driven by said output shaft and a front end; auger means driven by said front end of said auger connecting shaft means and including a forwardly and inwardly inclined bit mounting side surface, a plurality of rotatable side bit members inclined forwardly with respect to the path of rotation of said side surface mounted along the longitudinal extent of said bit mounting surface in side by side relationship, an auger tip portion including a tip bit member; and an auger base portion including a base bit member extending radially of said base portion.
Claim 3
Dependent Claim
32 words
The apparatus defined in claim 1 wherein said side bit members are angled toward said tip portion with respect to a reference plane normal to the longitudinal axis of said side surface.
Claim 4
Dependent Claim
42 words
The apparatus defined in claim 1 wherein said auger base portion includes a pivotally mounted bit mounting arm, said base bit member being mounted on said arm whereby said base bit member can yield inwardly upon reverse rotation of said auger means.
Claim 5
Dependent Claim
28 words
The apparatus defined in claim 1 wherein said base bit member is inclined forwardly and outwardly with respect to the path of rotation of said auger base portion.
Claim 6
Dependent Claim
35 words
The apparatus defined in claim 1 wherein said auger tip portion includes a radially extending tip surface and wherein said tip bit member is inclined forwardly and outwardly with respect to said auger tip portion.
Claim 7
Dependent Claim
208 words
A portable earth boring machine comprising, in combination, base means including spaced track members; a carriage means mounted for movement along said track members; a fluid motor for driving said carriage means along said track members; an engine mounted on said carriage means and including an engine drive shaft; a speed varying unit mounted on said carriage means and including an input shaft driven by said engine drive shaft and an output shaft; auger connecting shaft means including a rear end driven by said output shaft and a front end; auger means driven by said front end of said auger connecting shaft means and including an auger shaft portion, an auger base plate on said auger shaft means and forming the rear of said auger means, a plurality of circumferentially spaced generally triangular auger side plates including radial edges mounted on said auger base plate, longitudinal edges mounted on said auger shaft portion, and forwardly and inwardly inclined bit mounting side surfaces, a plurality of side bit members mounted along the longitudinal extend of said bit mounting surfaces in side by side relationship, an auger tip portion including a tip bit member; and an auger base portion including a base bit member extending radially of said base portion.
Claim 8
Dependent Claim
208 words
A portable earth boring machine comprising, in combination, base means including spaced track members; a carriage means mounted for movement along said track members; a fluid motor for driving said carriage means along said track members; an engine mounted on said carriage means and including an engine drive shaft; a speed varying unit mounted on said carriage means and including an input shaft driven by said engine drive shaft and an output shaft; auger connecting shaft means including a rear end driven by said output shaft and a front end; auger means driven by said front end of said auger connecting shaft means and including an auger shaft portion, an auger base plate on said auger shaft means and forming the rear of said auger means, a plurality of circumferentially spaced generally triangular auger side plates including radial edges mounted on said auger base plate, longitudinal edges mounted on said auger shaft portion, and forwardly and inwardly inclined bit mounting side surfaces, a plurality of side bit members mounted along the longitudinal extend of said bit mounting surfaces in side by side relationship, an auger tip portion including a tip bit member; and an auger base portion including a base bit member extending radially of said base portion.
Claim 9
Dependent Claim
27 words
The apparatus defined in claim 6 wherein said said bit members are inclined forwardly and outwardly with respect to the path of rotation of said side surface.
Claim 10
Dependent Claim
32 words
The apparatus defined in claim 6 wherein said side bit members are angled toward said tip portion with respect to a reference plane normal to the longitudinal axis of said side surface.
Claim 11
Dependent Claim
42 words
The apparatus defined in claim 6 wherein said auger base portion includes a pivotally mounted bit mounting arm, said base bit member being mounted on said arm whereby said base bit member can yield inwardly upon reverse rotation of said auger means.
Claim 12
Dependent Claim
28 words
The apparatus defined in claim 6 wherein said base bit member is inclined forwardly and outwardly with respect to the path of rotation of said auger base portion.
Claim 13
Dependent Claim
35 words
The apparatus defined in claim 6 wherein said auger tip portion includes a radially extending tip surface and wherein said tip bit member is inclined forwardly and outwardly with respect to said auger tip portion.
Claim 14
Dependent Claim
195 words
A portable earth boring machine Comprising, in combination, base means including spaced track members; a carriage means mounted for movement along said track members; a fluid motor for driving said carriage means along said track members; an engine mounted on said carriage means and including an engine drive shaft; a speed varying unit mounted on said carriage means and including an input shaft driven by said engine drive shaft and an output shaft; a thrust plate mounted on said carriage means forwardly of said speed varying unit; thrust bearing means mounted on said thrust plate; auger connecting shaft means including a rear end driven by said output shaft and a front end; auger means driven by said front end of said auger connecting shaft means and including forwardly and inwardly inclined bit mounting side surface, a plurality of rotatable side bit members mounted along the longitudinal extent of said bit mounting surface in side by side relationship, an auger tip portion including a tip bit member inclined forwardly with respect to the path of rotation of said side surface; and an auger base portion including a base bit member extending radially of said base portion.
Claim 15
Dependent Claim
195 words
A portable earth boring machine Comprising, in combination, base means including spaced track members; a carriage means mounted for movement along said track members; a fluid motor for driving said carriage means along said track members; an engine mounted on said carriage means and including an engine drive shaft; a speed varying unit mounted on said carriage means and including an input shaft driven by said engine drive shaft and an output shaft; a thrust plate mounted on said carriage means forwardly of said speed varying unit; thrust bearing means mounted on said thrust plate; auger connecting shaft means including a rear end driven by said output shaft and a front end; auger means driven by said front end of said auger connecting shaft means and including forwardly and inwardly inclined bit mounting side surface, a plurality of rotatable side bit members mounted along the longitudinal extent of said bit mounting surface in side by side relationship, an auger tip portion including a tip bit member inclined forwardly with respect to the path of rotation of said side surface; and an auger base portion including a base bit member extending radially of said base portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |