US2537822A - Spiral scanning mechanism - Google Patents
Spiral scanning mechanism Download PDFInfo
- Publication number
- US2537822A US2537822A US637125A US63712545A US2537822A US 2537822 A US2537822 A US 2537822A US 637125 A US637125 A US 637125A US 63712545 A US63712545 A US 63712545A US 2537822 A US2537822 A US 2537822A
- Authority
- US
- United States
- Prior art keywords
- shaft
- hollow shaft
- scanning mechanism
- worm
- spiral scanning
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
- H01Q3/18—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is movable and the reflecting device is fixed
-
- 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
- Y10T74/18184—Crank, pitman, and lever
-
- 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
Definitions
- This invention relates to radio signaling apparatus and more specifically to a scanning mechanism for use in such apparatus.
- the object of this invention is the provision of a scanning mechanism of the type above referred to whichwill be simple and in which a directive element is operated in a manner to generate a scanning field determined by the operation of two shafts relative to each other.
- Fig. 1 is an elevational view shown with a number of operating parts in vertical section
- Fig. 2 is a front elevational view
- Fig. 3 is a top view
- Fig. 4 is a partial top view shown with the directive element or reflector in an operated position
- Fig. 5 is a detail view looking in the direction indicated by the arrows on line 5-5 of Fig. 1;
- Fig. 6 is a diagrammatic view of the scanning field obtained by the movement of the reflector.
- the scanning mechanism of this invention consists of a base ll! formed with two upright Supports I l and I2, upright support ll having an inverted U-shaped portion I3 at its free end serving in cooperation with upright support I2 for rotatably mounting as on ball bearings BI and B2, a hollow shaft l4 best seen in Figs. 1 and 3.
- hollow shaft I4 On one end of hollow shaft I4 is keyed a gear l5 meshing with a pinion I6 keyed on the armature shaft of a motor I! secured to the base [0 as by a number of bolts l8, while on the opposite end of hollow shaft 14 is keyed a forkshaped member 19, the shaft I4 and member 19 being rotated through the operation of motor l'l, pinion l6 and gear l5 keyed as above mentioned on hollow shaft l4.
- the fork-shaped member I9 is formed with a pair of arms 20 and 2
- a worm gear 23 On one end of shaft 22 is keyed a worm gear 23 best seen in Fig. 2, meshing with a worm 24 carried or formed at one end of a hollow shaft 25 mounted in position concentric to hollow shaft l4 and supported at one end by support ll, shaft 25 being-held from rotation by a plate 26 secured to upright supports II, as by a number of screws 21, best seen in Figs.
- a disc member 28 provided with a crank pin 29 serving for pivotally mounting a bell crank 30, the opposite end of which is pivoted to an arm 3
- Head-piece H in cooperation with a head-piece HI, pivoted on a spindle 34, secured to the other prong of forkshaped member l9, serves for mounting a parabolic reflector 35 having a rim portion 36 clamped between similarly shaped projections S and SI formed with the head-pieces H and HI while the reflector 35 is formed with an oblong-shaped opening 31 through which projects the so-called emitter or antenna 38 connecting with a coaxial line (not shown) in the hollow shaft 25.
- the operation of motor I! is effective to rotate the hollow shaft I4 and the fork-shaped member l9 carried thereby through the engagement of pinion IS with gear [5 keyed to the hollow shaft [4.
- the rotation of forkshaped member I9 is effective to rotate the parabolic reflector. 35, while causing the rotation of shaft 22 through the engagement of worm 23 carried by the shaft 22 with the worm 24 carried by the hollow shaft 25, which is held against rotary movement by the forked plate 26.
- Rotation of shaft 22, and that of the crank formed by disc 28 and the pin 29 which connects with the bell crank 30, is effective to impart reciprocating movements to the head-piece H and thereby to the reflector from the position shown in full line, to the position shown in dotted line in Fig.
- a mechanical driving apparatus comprising a support, a first hollow shaft rotatably supported in said support, a yoke secured to said hollow shaft, a fixed hollow shaft extending from within said first hollow shaft and into the space between the arms of said yoke, a worm gear on said fixed shaft, a counter-shaft rotatably supported in said yoke, a worm wheel secured to said counter-shaft and in mesh with said worm gear, spaced levers pivotally supported on arms of said yoke and cov operating to support a paraboloid movable member having a transverse slot therein, a rigid member extending through said fixed hollow shaft and through said slot, and a crank and lever system forming a mechanical driving connection between said counter-shaft and at least one of said spaced levers.
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Description
Jan. 9, 1951 M. FRITTS 2,537,822
SPIRAL SCANNING MECHANISM Filed Dec. 24, 1945 2 Sheets-Sheet 1 3 .j If .i'. 2
29 I p 28 I l5 1 22 5 27 BI 82 as I 25 4 as BVJ ZMES MM ATTORNEY Jan. 9, 1951 M. FRlTTS 2,537,822
SPIRAL SCANNING MECHANISM Filed Dec. 24, 1945 2 Sheets-Sheet 2 //v l E/VTOR M. FR/ 7' TS Q? 7% xm A T TOANE Y Patented Jan. 9 1951 UNITED STATES PATENT OFFICE Telephone Laboratories,
Incorporated, New
York, N. Y., a corporation of New York Application December 24, 1945, Serial N 0. 637,125
1 Claim.
This invention relates to radio signaling apparatus and more specifically to a scanning mechanism for use in such apparatus.
The object of this invention is the provision of a scanning mechanism of the type above referred to whichwill be simple and in which a directive element is operated in a manner to generate a scanning field determined by the operation of two shafts relative to each other.
In the drawing:
Fig. 1 is an elevational view shown with a number of operating parts in vertical section;
Fig. 2 is a front elevational view;
Fig. 3 is a top view;
Fig. 4 is a partial top view shown with the directive element or reflector in an operated position;
Fig. 5 is a detail view looking in the direction indicated by the arrows on line 5-5 of Fig. 1; and
Fig. 6 is a diagrammatic view of the scanning field obtained by the movement of the reflector.
As shown in the drawing, the scanning mechanism of this invention consists of a base ll! formed with two upright Supports I l and I2, upright support ll having an inverted U-shaped portion I3 at its free end serving in cooperation with upright support I2 for rotatably mounting as on ball bearings BI and B2, a hollow shaft l4 best seen in Figs. 1 and 3.
On one end of hollow shaft I4 is keyed a gear l5 meshing with a pinion I6 keyed on the armature shaft of a motor I! secured to the base [0 as by a number of bolts l8, while on the opposite end of hollow shaft 14 is keyed a forkshaped member 19, the shaft I4 and member 19 being rotated through the operation of motor l'l, pinion l6 and gear l5 keyed as above mentioned on hollow shaft l4.
The fork-shaped member I9 is formed with a pair of arms 20 and 2| extending laterally therefrom and havingbearing portions in which is journaled a shaft 22. On one end of shaft 22 is keyed a worm gear 23 best seen in Fig. 2, meshing with a worm 24 carried or formed at one end of a hollow shaft 25 mounted in position concentric to hollow shaft l4 and supported at one end by support ll, shaft 25 being-held from rotation by a plate 26 secured to upright supports II, as by a number of screws 21, best seen in Figs. 1, 3 and 5, and having a fork-shaped portion fitted over two opposite sides of a square-shaped portion formed at the end of shaft 25 for preventing its rotation as would be imparted by friction between this shaft and the shaft l4 and the friction between the worm 24 and the worm gear 23 while in operation.
To the end of shaft 22, opposite the worm gear 23, there is securely mounted a disc member 28 provided with a crank pin 29 serving for pivotally mounting a bell crank 30, the opposite end of which is pivoted to an arm 3|, best seen in Figs. 2, 3 and 4, formed with a head-piece H in turn pivoted on a spindle 32 secured to the prong P of the fork-shaped member l9. Head-piece H in cooperation with a head-piece HI, pivoted on a spindle 34, secured to the other prong of forkshaped member l9, serves for mounting a parabolic reflector 35 having a rim portion 36 clamped between similarly shaped projections S and SI formed with the head-pieces H and HI while the reflector 35 is formed with an oblong-shaped opening 31 through which projects the so-called emitter or antenna 38 connecting with a coaxial line (not shown) in the hollow shaft 25.
In the operation of the scanning mechanism of this invention, the operation of motor I! is effective to rotate the hollow shaft I4 and the fork-shaped member l9 carried thereby through the engagement of pinion IS with gear [5 keyed to the hollow shaft [4. The rotation of forkshaped member I9 is effective to rotate the parabolic reflector. 35, while causing the rotation of shaft 22 through the engagement of worm 23 carried by the shaft 22 with the worm 24 carried by the hollow shaft 25, which is held against rotary movement by the forked plate 26. Rotation of shaft 22, and that of the crank formed by disc 28 and the pin 29 which connects with the bell crank 30, is effective to impart reciprocating movements to the head-piece H and thereby to the reflector from the position shown in full line, to the position shown in dotted line in Fig. 4 for each complete turn of the shaft 22 to cause the reflector 35 to generate a scanning field representing a spiral, as shown in Fig. 6, the pitch of which is dependent upon the speed ratio between the worm 24 and worm gear 23 for any given speed at which the parabolic reflector may be rotated.
What is claimed is:
A mechanical driving apparatus comprising a support, a first hollow shaft rotatably supported in said support, a yoke secured to said hollow shaft, a fixed hollow shaft extending from within said first hollow shaft and into the space between the arms of said yoke, a worm gear on said fixed shaft, a counter-shaft rotatably supported in said yoke, a worm wheel secured to said counter-shaft and in mesh with said worm gear, spaced levers pivotally supported on arms of said yoke and cov operating to support a paraboloid movable member having a transverse slot therein, a rigid member extending through said fixed hollow shaft and through said slot, and a crank and lever system forming a mechanical driving connection between said counter-shaft and at least one of said spaced levers.
MORRIS FRITTS.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,083,242 Runge June 8, 1937 2,231,929 Lyman Feb. 18, 1941 2,407,305 Langstroth et al. Sept. 10, 1946 2,410,831 Maybarduk et a1. Nov. 12, 1946
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US637125A US2537822A (en) | 1945-12-24 | 1945-12-24 | Spiral scanning mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US637125A US2537822A (en) | 1945-12-24 | 1945-12-24 | Spiral scanning mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
US2537822A true US2537822A (en) | 1951-01-09 |
Family
ID=24554644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US637125A Expired - Lifetime US2537822A (en) | 1945-12-24 | 1945-12-24 | Spiral scanning mechanism |
Country Status (1)
Country | Link |
---|---|
US (1) | US2537822A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677121A (en) * | 1950-10-19 | 1954-04-27 | Pyle National Co | Combination warning light and stationary headlight |
US2762041A (en) * | 1950-09-09 | 1956-09-04 | Motorola Inc | Signalling equipment |
DE1010122B (en) * | 1955-03-10 | 1957-06-13 | Gen Electric | Arrangement for the mechanical pivoting of a member to achieve a straight or circular scanning movement |
US2811719A (en) * | 1953-04-28 | 1957-10-29 | Henry W Wallace | Double-universal nod mechanism |
US2916739A (en) * | 1955-07-28 | 1959-12-08 | Underwood Corp | Scanner for antenna system |
US2925594A (en) * | 1946-03-18 | 1960-02-16 | George A Garrett | Radar search scan system |
US3166750A (en) * | 1961-02-14 | 1965-01-19 | Raytheon Co | Antenna intersecting-orthogonal-axes gimbal mount utilizing rotary bearings for two axes and push-pull linkage for third axis |
US5422623A (en) * | 1990-10-04 | 1995-06-06 | Federal Signal Corporation | Programmable emergency signalling device and system |
EP2549585A1 (en) * | 2011-07-21 | 2013-01-23 | Harris Corporation | Systems for positioning reflectors, such as passive reflectors |
US9368867B2 (en) | 2013-10-07 | 2016-06-14 | Harris Corporation | Near-linear drive systems for positioning reflectors |
US20170216998A1 (en) * | 2014-08-06 | 2017-08-03 | C.M.S. S.P.A. | System for supporting a workpiece |
DE102020102576A1 (en) | 2020-02-03 | 2021-08-05 | Neura Robotics GmbH | Device for detecting the position and / or speed of objects in space |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2083242A (en) * | 1934-01-27 | 1937-06-08 | Telefunken Gmbh | Method of direction finding |
US2231929A (en) * | 1937-04-29 | 1941-02-18 | Sperry Gyroscope Co Inc | Tridimensional radio direction indicator |
US2407305A (en) * | 1942-04-10 | 1946-09-10 | Sperry Gyroscope Co Inc | Scanning device |
US2410831A (en) * | 1942-04-10 | 1946-11-12 | Sperry Gyroscope Co Inc | Scanning device |
-
1945
- 1945-12-24 US US637125A patent/US2537822A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2083242A (en) * | 1934-01-27 | 1937-06-08 | Telefunken Gmbh | Method of direction finding |
US2231929A (en) * | 1937-04-29 | 1941-02-18 | Sperry Gyroscope Co Inc | Tridimensional radio direction indicator |
US2407305A (en) * | 1942-04-10 | 1946-09-10 | Sperry Gyroscope Co Inc | Scanning device |
US2410831A (en) * | 1942-04-10 | 1946-11-12 | Sperry Gyroscope Co Inc | Scanning device |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2925594A (en) * | 1946-03-18 | 1960-02-16 | George A Garrett | Radar search scan system |
US2762041A (en) * | 1950-09-09 | 1956-09-04 | Motorola Inc | Signalling equipment |
US2677121A (en) * | 1950-10-19 | 1954-04-27 | Pyle National Co | Combination warning light and stationary headlight |
US2811719A (en) * | 1953-04-28 | 1957-10-29 | Henry W Wallace | Double-universal nod mechanism |
DE1010122B (en) * | 1955-03-10 | 1957-06-13 | Gen Electric | Arrangement for the mechanical pivoting of a member to achieve a straight or circular scanning movement |
US2916739A (en) * | 1955-07-28 | 1959-12-08 | Underwood Corp | Scanner for antenna system |
US3166750A (en) * | 1961-02-14 | 1965-01-19 | Raytheon Co | Antenna intersecting-orthogonal-axes gimbal mount utilizing rotary bearings for two axes and push-pull linkage for third axis |
US6100791A (en) * | 1990-10-04 | 2000-08-08 | Federal Signal Corporation | Programmable emergency signalling device and system |
US5422623A (en) * | 1990-10-04 | 1995-06-06 | Federal Signal Corporation | Programmable emergency signalling device and system |
EP2549585A1 (en) * | 2011-07-21 | 2013-01-23 | Harris Corporation | Systems for positioning reflectors, such as passive reflectors |
US9054409B2 (en) | 2011-07-21 | 2015-06-09 | Harris Corporation | Systems for positioning reflectors, such as passive reflectors |
US9281560B2 (en) | 2011-07-21 | 2016-03-08 | Harris Corporation | Systems for positioning reflectors, such as passive reflectors |
US9368867B2 (en) | 2013-10-07 | 2016-06-14 | Harris Corporation | Near-linear drive systems for positioning reflectors |
US9912052B2 (en) | 2013-10-07 | 2018-03-06 | Harris Corporation | Near-linear drive systems for positioning reflectors |
US20170216998A1 (en) * | 2014-08-06 | 2017-08-03 | C.M.S. S.P.A. | System for supporting a workpiece |
US10562157B2 (en) * | 2014-08-06 | 2020-02-18 | C.M.S. S.P.A. | System for supporting a workpiece |
DE102020102576A1 (en) | 2020-02-03 | 2021-08-05 | Neura Robotics GmbH | Device for detecting the position and / or speed of objects in space |
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