US525194A - James dyson and richard harley williamson - Google Patents
James dyson and richard harley williamson Download PDFInfo
- Publication number
- US525194A US525194A US525194DA US525194A US 525194 A US525194 A US 525194A US 525194D A US525194D A US 525194DA US 525194 A US525194 A US 525194A
- Authority
- US
- United States
- Prior art keywords
- williamson
- harley
- richard
- sections
- dyson
- 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 - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/26—Screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H2001/122—Single or multiple threaded helicoidal screws, or the like, comprising foils extending over a substantial angle; Archimedean screws
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/20—Geometry three-dimensional
- F05B2250/25—Geometry three-dimensional helical
Definitions
- This invention relates to an improved construction of Archimedean screws such for example as are used as conveyers for grain, fuel or other solid plastic, semi-plastic, or liquid bodies.
- the blade or vane of the screw is formed in sections at having at their ends dovetails or projections b and recesses engaging with each other so that when sections each of which forms a complete convolution are threaded on the central shaft the said sections form a continuous screw blade.
- the end sections are fixed to the central shaft in any convenient manner as by an angle iron cl. By removing one of the end sections the intervening sections can be easily withdrawn from the shaft and be replaced when worn or broken. Besides engaging with each other the inner edge of the blade of each section where it comes in contact with the shaft is formed so as to present a straight surface parallel to and taking against a flat surface on the central shaft.
- the fiat on the central shaft thus prevents any rotary motion of any section and a stronger screw is produced than if the sections were simply threaded on a cylindrical shaft and the end sections only secured since in the latter case the end sections have to bear the torsion of the entire screw.
- The'central shaft may be square or of other prismatic shape or may be a cylindrical shaft if one or more flats are formed thereon against which the inner straight edge may bear.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
Description
- oooooo eL) J. DYSON & R. H. WILLIAMSON.
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I N0.5Z5,194. Patented Aug..28,1'89 4."
WNW!" M ammo. WASNINGTON u c UNITED STATES PATENT OFFICE.
' JAMES DYSON AND RICHARD HARLEY WILLIAMSON, OF ASHTON-UNDER- LYNE, ENGLAND.
ARCHIMEDEAN SCREW- SPECIFICATION forming part of Letters Patent No. 525,194, dated August 28, 1894.
Application fil d January 10, 1894- Serlal No. 496,420. (No model.) Patented in England November 22, 1892, No. 21,236, and in France August 16, 1893,110. 232,192.
To 0022 whom, it may concern.-
Be it known that we, JAMES DYsON, a resident of Good Hope Mill, Ashton-under-Lyne, and RICHARD HARLEY WILLIAMSON, a resident of 21 Victoria Street, Ashton-under- Lyne, county of Lancaster, England, subjects of the Queen of Great Britain and Ireland, have invented an Improved Archimedean Screw, (for which we have obtained a British patent, No. 21,236, dated November 22, 1892, and a French patent, No. 232,192, dated August 16, 1893,) of which the following is a specification.
This invention relates to an improved construction of Archimedean screws such for example as are used as conveyers for grain, fuel or other solid plastic, semi-plastic, or liquid bodies.
A screw made in accordance with our said invention is shown in the accompanying drawings, of which- Figure 1 is a side view and Fig. 2 an end view.
The blade or vane of the screw is formed in sections at having at their ends dovetails or projections b and recesses engaging with each other so that when sections each of which forms a complete convolution are threaded on the central shaft the said sections form a continuous screw blade. The end sections are fixed to the central shaft in any convenient manner as by an angle iron cl. By removing one of the end sections the intervening sections can be easily withdrawn from the shaft and be replaced when worn or broken. Besides engaging with each other the inner edge of the blade of each section where it comes in contact with the shaft is formed so as to present a straight surface parallel to and taking against a flat surface on the central shaft. The fiat on the central shaft thus prevents any rotary motion of any section and a stronger screw is produced than if the sections were simply threaded on a cylindrical shaft and the end sections only secured since in the latter case the end sections have to bear the torsion of the entire screw. The'central shaft may be square or of other prismatic shape or may be a cylindrical shaft if one or more flats are formed thereon against which the inner straight edge may bear.
We are aware that it has been proposed to construct 'Archimedean screws by threading on a central shaft a number of short sections each of which forms part of the blade and the body of the screw and which engage longitudinally with each other and we would have it understood that we make no general claim'to such a combination.
' What we claim as our invention, and desire to secure by Letters Patent, is-- An Archimedean screw consisting of a ribbon-shaped spiral blade or vane in sections, each forming a complete convolution, the ends of which are provided with transverse overlapped interlocked projections and recesses whereby they may be engaged with each other or disengaged only longitudinally, and each having a straight inner edge engaging with one or more flats on a central shaft on which the said sections are slid, substantially as set forth.
In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.
JAMES DYSON. RICHARD HARLEY WILLIAMSON. Witnesses:
J OSEPH BENTON, JOHN S. HALL.
Publications (1)
Publication Number | Publication Date |
---|---|
US525194A true US525194A (en) | 1894-08-28 |
Family
ID=2593987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US525194D Expired - Lifetime US525194A (en) | James dyson and richard harley williamson |
Country Status (1)
Country | Link |
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US (1) | US525194A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4693861A (en) * | 1984-04-09 | 1987-09-15 | The Laitram Corporation | Mold and process for manufacturing helical shaped items |
US4871505A (en) * | 1984-04-09 | 1989-10-03 | The Laitram Corporation | Mold and process for manufacturing helical shaped items |
US6390283B1 (en) | 2001-02-07 | 2002-05-21 | Blaw-Knox Construction Equipment Corporation | Cast auger gating interface |
-
0
- US US525194D patent/US525194A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4693861A (en) * | 1984-04-09 | 1987-09-15 | The Laitram Corporation | Mold and process for manufacturing helical shaped items |
US4871505A (en) * | 1984-04-09 | 1989-10-03 | The Laitram Corporation | Mold and process for manufacturing helical shaped items |
US6390283B1 (en) | 2001-02-07 | 2002-05-21 | Blaw-Knox Construction Equipment Corporation | Cast auger gating interface |
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