US1977289A - Variable condenser - Google Patents
Variable condenser Download PDFInfo
- Publication number
- US1977289A US1977289A US636230A US63623032A US1977289A US 1977289 A US1977289 A US 1977289A US 636230 A US636230 A US 636230A US 63623032 A US63623032 A US 63623032A US 1977289 A US1977289 A US 1977289A
- Authority
- US
- United States
- Prior art keywords
- plates
- condenser
- worm
- sectors
- gear
- 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
Links
- 230000002427 irreversible effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/04—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode
- H01G5/06—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode due to rotation of flat or substantially flat electrodes
-
- 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
- Y10T74/19—Gearing
- Y10T74/19023—Plural power paths to and/or from gearing
- Y10T74/19047—Worm-type gearing
-
- 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
- Y10T74/19—Gearing
- Y10T74/19623—Backlash take-up
Definitions
- Figure 1 is an end elevation
- Figure 2 is a plan view thereof.
- A-pair offlshafts 1--1 having condenser plates 2 mounted thereon, are positioned within a frame 3 in such a manner that when the shafts are roo tated in frame bearings 4, the plates will interrod terminated at one end by ,a hand wheel 11,
- the worm is meshed with the sectors so that a continuous progression of theworm over the entire sector will varythe interleaving of con- 40 denser plates from zero to maximum. It is also desirable to have the gears so cut as to be irreversible, that is, so that the weight of the plates will not turn the worm in any position. This Fastenedto each shaft, between the plates and saves counterbalancing of the plates and allows plates of heavy construction to be used, as is desirable in high powered radio transmitters.
- a tension spring 13 is attached to the upper angle of one sector by an upper spring stud l4, and to the lower angle of the other sector by a lower spring stud 15.
- a worm drive as described will allow high gear reductions, and the amount of interleaving, and capacity, can be changed in small increments, thus providing delicacy of adjustment.
- the drive is ideally adapted for extremelylarge capacitors, where the plates may reach the size of 12 -by 12 inches, and the entire condenser made up of as many as plates. The irreversibility of the gear readily takes care of theunbalanced weights.
- a drive adapted to interleave condenser plates comprising a pair of shafts adapted to be rotated. on which said plates are mounted, a gear sector on each of said shafts, a common worm gear-meshing with each of said sectors, and re- 1 rotated, on which said plates are mounted, a, gear sector on each of said shafts, a common worm gear meshing with each of said sectors, and a spring under tension connecting said sectors,
- said spring having one sector connection above the contact of worm and sector and the other seetor connection below said contact.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Gear Transmission (AREA)
Description
1934- P. F. SCOFIELD 1,977,289
VARIABLE CONDENSER Filed 001;. 4, 1932 lNSULA T/ON INVENTOR,
HlL/P F. SCOF/ELD. B MW ATTORNEY Patented Oct. 16, 1934 VARIABLE CONDENSER Philip F. Scoileld, Palo Alto, Calif., assignor to Helnta a Kaufman, Ltd., San Francisco, Calif., a corporation of Nevada Application October 4, 1932, Serial No. 636,230
2 Claims. (Cl. 'IHZS) My invention relates to a variable condenser and, more particularly, to a'condenser which is operated by a worm gear drive. Y Among the objects of my invention are: 6 To provide a means for varying the capacity of large condensers: I To provide a worm gear for varying the capacity of a condenser:
To provide an irreversible gear drive for a va- 1 riable condenser:
And to provide means for taking up back-lash in a worm gear drive for variable condensers.
Referring to the drawing, showing a preferred embodiment of my invention:
Figure 1 is an end elevation, and- Figure 2 is a plan view thereof. A-pair offlshafts 1--1 having condenser plates 2 mounted thereon, are positioned within a frame 3 in such a manner that when the shafts are roo tated in frame bearings 4, the plates will interrod terminated at one end by ,a hand wheel 11,
and carrying a worm 12 solidly applied to the rod 85 at a' point where it will mesh with both of the gear sectors 7--'l.
The worm is meshed with the sectors so that a continuous progression of theworm over the entire sector will varythe interleaving of con- 40 denser plates from zero to maximum. It is also desirable to have the gears so cut as to be irreversible, that is, so that the weight of the plates will not turn the worm in any position. This Fastenedto each shaft, between the plates and saves counterbalancing of the plates and allows plates of heavy construction to be used, as is desirable in high powered radio transmitters.
To remove all back-lash, a tension spring 13 is attached to the upper angle of one sector by an upper spring stud l4, and to the lower angle of the other sector bya lower spring stud 15.
The stress thus applied to the sectors causes the sectors to bear against opposite sides of the threadof theworm l2, withsuflicient pressure to eliminate backlash throughout-thetravel cf the sectors. The opposing stresses cancel each other so that there is no additional thrust load placed on the worm shaft 10.
A worm drive as described will allow high gear reductions, and the amount of interleaving, and capacity, can be changed in small increments, thus providing delicacy of adjustment. The drive is ideally adapted for extremelylarge capacitors, where the plates may reach the size of 12 -by 12 inches, and the entire condenser made up of as many as plates. The irreversibility of the gear readily takes care of theunbalanced weights.
I claim:
1, A drive adapted to interleave condenser plates comprising a pair of shafts adapted to be rotated. on which said plates are mounted, a gear sector on each of said shafts, a common worm gear-meshing with each of said sectors, and re- 1 rotated, on which said plates are mounted, a, gear sector on each of said shafts, a common worm gear meshing with each of said sectors, and a spring under tension connecting said sectors,
said spring having one sector connection above the contact of worm and sector and the other seetor connection below said contact.
PHILIP r. scor'mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US636230A US1977289A (en) | 1932-10-04 | 1932-10-04 | Variable condenser |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US636230A US1977289A (en) | 1932-10-04 | 1932-10-04 | Variable condenser |
Publications (1)
Publication Number | Publication Date |
---|---|
US1977289A true US1977289A (en) | 1934-10-16 |
Family
ID=24551004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US636230A Expired - Lifetime US1977289A (en) | 1932-10-04 | 1932-10-04 | Variable condenser |
Country Status (1)
Country | Link |
---|---|
US (1) | US1977289A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2540828A (en) * | 1947-11-15 | 1951-02-06 | Toastswell Company Inc | Clock balance escapement device |
US2570602A (en) * | 1946-04-10 | 1951-10-09 | Ernest F Shawver | Calibrated traveling band radio indicator or dial |
US2941415A (en) * | 1958-01-02 | 1960-06-21 | Westinghouse Air Brake Co | Motion transmitting apparatus |
US3151494A (en) * | 1962-12-03 | 1964-10-06 | Kearney & Trecker Corp | Backlash eliminator |
US3353074A (en) * | 1965-10-19 | 1967-11-14 | Voltronics Corp | Variable electrical impedance device |
US3574285A (en) * | 1969-04-14 | 1971-04-13 | Sarkes Tarzian | Uhf tuner drive mechanism |
-
1932
- 1932-10-04 US US636230A patent/US1977289A/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2570602A (en) * | 1946-04-10 | 1951-10-09 | Ernest F Shawver | Calibrated traveling band radio indicator or dial |
US2540828A (en) * | 1947-11-15 | 1951-02-06 | Toastswell Company Inc | Clock balance escapement device |
US2941415A (en) * | 1958-01-02 | 1960-06-21 | Westinghouse Air Brake Co | Motion transmitting apparatus |
US3151494A (en) * | 1962-12-03 | 1964-10-06 | Kearney & Trecker Corp | Backlash eliminator |
US3353074A (en) * | 1965-10-19 | 1967-11-14 | Voltronics Corp | Variable electrical impedance device |
US3574285A (en) * | 1969-04-14 | 1971-04-13 | Sarkes Tarzian | Uhf tuner drive mechanism |
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