US2936634A - Plane-sifter drive - Google Patents
Plane-sifter drive Download PDFInfo
- Publication number
- US2936634A US2936634A US621921A US62192156A US2936634A US 2936634 A US2936634 A US 2936634A US 621921 A US621921 A US 621921A US 62192156 A US62192156 A US 62192156A US 2936634 A US2936634 A US 2936634A
- Authority
- US
- United States
- Prior art keywords
- shaft
- plane
- extension
- sifter
- drive
- 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
-
- 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
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/38—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens oscillating in a circular arc in their own plane; Plansifters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18344—Unbalanced weights
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18544—Rotary to gyratory
- Y10T74/18552—Unbalanced weight
Definitions
- the invention relates to a plane-sitter drive which is characterized .in that a cranked extension of the flyweight-driving shaft passes freely through a yweight bearing and is eccentric with respect to the remaining drive shaft by an amount equal to the stroke radius.
- FIG. 1 is a schematical elevation of the plane sifter with drive shaft and drive
- Fig. 2 is a section through the flyweight and its articulated connection to the drive shaft.
- a plane sifter 1 is suspended from the ceiling 3 of a mill building through hangers 2, and its drive shaft 4 rotates in a spherical bearing 5 fixed to said ceiling, being driven by a motor 6.
- the unbalanced yweight 8, being axially movable rotates in bearings 9 and 10 fixed to the plane-sitter supporting frame 11.
- the cranked extension 4a of shaft 4 passes freely, Le. with substantial lateral play, through bearing 9 in eccentric relation to the remaining shaft, the eccentricity being equal to the stroke radius.
- a driver 14 is keyed to shaft extension 4a and carries a socket 15 which in turn carries ilyweight 8 in articulated relation through a pin 16 fixed to the latter.
- a leaf spring 18 for transmitting the rotary movement of shaft 4 without hindering the axial play of the flyweight.
- a shaft having an upper end articulately supported by the ceiling and a lower end, and means for rotating said shaft, in combination: an upper and a lower bearing in said supporting frame, an unbalanced fiyweight rotatably and axially movably mounted in said upper and said lower bearing, a cranked extension at the lower end of said shaft passing freely through said upper bearing for causing movements of said frame in a circle having' i a stroke radius, the eccentricity of said extension with respect to said shaft Vbeing equal to said stroke radius, means fixed to said extension intermediate said bearings for rockably supporting said yweight, and resilient means rotatable with said extension and fixed to said fiyweight for transmitting thereto the rotary movement of said shaft.
- a shaft having an upper end articulately supported by the ceiling and a lower end, and means for rotating said shaft, in combination: an upper and a lower bearing in said supporting frame, an unbalanced iiyweight rotatably and axially movably mounted in said upper and said lower bearing, a cranked extension at the lower end of said shaft passing freely through said upper bearing for causing movements of said frame in a circle having a stroke radius, the eccentricity of said extension with respect to said shaft being equal to said stroke radius, and means fixed to said extension intermediate said bearings for rockably supporting said flyweight.
Description
May 17, 1960 L.. KETTING PLANE-SIFTER DRIVE Filed Nov. 13, 1956 |NVENTOR.
PLANE-SIBTER DRIVE Leendert Ketting, Ettenhausen, near Aadorf, Switzerland, assigner to Gebrueder Buehler, Uzwil, Switzerland, n Swiss firm Application November 13, 1956, Serial No. 621,921
Claims priority, application Switzerland November 10, 1955 Z Claims. (Cl. 74-61) In a plane sifter, as known, the ilyweight-driving shaft has to rotate at a uniform rate and remain vertical. To this end, the axis of said shaft has to be eccentric with respect to the axis of rotation of the unbalanced flyweight by an amount equal to the stroke radius. Since the plane sifter may run non-uniformly on starting or on account of load variations, an articulated connection has to be provided between drive shaft and iiyweight, which connection has to operate under proper kinematic conditions. In particular, the drive shaft must not be too short.
My present invention affords a favorable solution f this problem and a space-saving construction. The invention relates to a plane-sitter drive which is characterized .in that a cranked extension of the flyweight-driving shaft passes freely through a yweight bearing and is eccentric with respect to the remaining drive shaft by an amount equal to the stroke radius.
A preferred embodiment of the invention is shown in the accompanying drawing, in which- Fig. 1 is a schematical elevation of the plane sifter with drive shaft and drive, and Fig. 2 is a section through the flyweight and its articulated connection to the drive shaft.
In Fig. 1, a plane sifter 1 is suspended from the ceiling 3 of a mill building through hangers 2, and its drive shaft 4 rotates in a spherical bearing 5 fixed to said ceiling, being driven by a motor 6. l The unbalanced yweight 8, being axially movable rotates in bearings 9 and 10 fixed to the plane-sitter supporting frame 11. The cranked extension 4a of shaft 4 passes freely, Le. with substantial lateral play, through bearing 9 in eccentric relation to the remaining shaft, the eccentricity being equal to the stroke radius.
As known per se, a driver 14 is keyed to shaft extension 4a and carries a socket 15 which in turn carries ilyweight 8 in articulated relation through a pin 16 fixed to the latter. To driver 14 and ilywcight 8 is secured a leaf spring 18 for transmitting the rotary movement of shaft 4 without hindering the axial play of the flyweight.
Passing the extension 4a through bearing 9 renders possible an articulated suspension of ilyweight 8 and a shaft of suicient length, without unduly increasing the space required above the plane sifter. Even when the latter should not run evenly, no twisting or wrapping forces arise in such arrangement. Since the extension 4a is eccentric, its spacing or clearance from ybearing 9 and, therefore, the latters diameter may be held small. Since the lower bearing 10 also is provided with a bore, good cooling is attained for the two bearings 9 and 10.
What I claim as new and desire to secure by Letters Patent is:
1. In a plane sifter having a supporting .frame adapted to be articulately suspended from the ceiling of a mill building, a shaft having an upper end articulately supported by the ceiling and a lower end, and means for rotating said shaft, in combination: an upper and a lower bearing in said supporting frame, an unbalanced fiyweight rotatably and axially movably mounted in said upper and said lower bearing, a cranked extension at the lower end of said shaft passing freely through said upper bearing for causing movements of said frame in a circle having' i a stroke radius, the eccentricity of said extension with respect to said shaft Vbeing equal to said stroke radius, means fixed to said extension intermediate said bearings for rockably supporting said yweight, and resilient means rotatable with said extension and fixed to said fiyweight for transmitting thereto the rotary movement of said shaft.
2. In a plane sifter having a supporting frame adapted to be articulately suspended from the ceiling of a mill building, a shaft having an upper end articulately supported by the ceiling and a lower end, and means for rotating said shaft, in combination: an upper and a lower bearing in said supporting frame, an unbalanced iiyweight rotatably and axially movably mounted in said upper and said lower bearing, a cranked extension at the lower end of said shaft passing freely through said upper bearing for causing movements of said frame in a circle having a stroke radius, the eccentricity of said extension with respect to said shaft being equal to said stroke radius, and means fixed to said extension intermediate said bearings for rockably supporting said flyweight.
References Cited in the le of this patent UNITED STATES PATENTS 868,333 Draver Oct. 15, 1907 1,116,124 Rojahn Nov. 3, 1914 1,359,840 Roth et al Nov. 23, 1920 FOREIGN PATENTS 142,452 Great Britain Nov. l1, 1920 612,791 Germany May 4, 1935 456,310 Great Britain Dec. 12, 1936
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2936634X | 1955-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2936634A true US2936634A (en) | 1960-05-17 |
Family
ID=4572884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US621921A Expired - Lifetime US2936634A (en) | 1955-11-10 | 1956-11-13 | Plane-sifter drive |
Country Status (1)
Country | Link |
---|---|
US (1) | US2936634A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4543179A (en) * | 1981-09-04 | 1985-09-24 | Thunder Bay Northland Machinery Inc. | Rotary grain cleaner |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US868333A (en) * | 1906-06-09 | 1907-10-15 | Emil R Draver | Means for imparting gyratory motion to sieve-boxes and other bodies. |
US1116124A (en) * | 1912-12-31 | 1914-11-03 | Amme Giesecke & Konegen Ag | Mechanism for driving sieves. |
GB142452A (en) * | 1919-04-30 | 1920-11-11 | Heinrich Blumer | Improvements in plansifters |
US1359840A (en) * | 1920-04-16 | 1920-11-23 | Firm Buhler Brothers | Plansifter |
DE612791C (en) * | 1935-05-04 | Josef Huempfner | Hanging plansifter | |
GB456310A (en) * | 1935-04-29 | 1936-11-06 | Buehler Ag Geb | Improvements in or relating to plan sifters |
-
1956
- 1956-11-13 US US621921A patent/US2936634A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE612791C (en) * | 1935-05-04 | Josef Huempfner | Hanging plansifter | |
US868333A (en) * | 1906-06-09 | 1907-10-15 | Emil R Draver | Means for imparting gyratory motion to sieve-boxes and other bodies. |
US1116124A (en) * | 1912-12-31 | 1914-11-03 | Amme Giesecke & Konegen Ag | Mechanism for driving sieves. |
GB142452A (en) * | 1919-04-30 | 1920-11-11 | Heinrich Blumer | Improvements in plansifters |
US1359840A (en) * | 1920-04-16 | 1920-11-23 | Firm Buhler Brothers | Plansifter |
GB456310A (en) * | 1935-04-29 | 1936-11-06 | Buehler Ag Geb | Improvements in or relating to plan sifters |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4543179A (en) * | 1981-09-04 | 1985-09-24 | Thunder Bay Northland Machinery Inc. | Rotary grain cleaner |
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