US2541324A

US2541324A - Motion translating mechanism

Info

Publication number: US2541324A
Application number: US589336A
Authority: US
Inventors: Howard A Baxter; Willard D Lewis
Original assignee: Bell Telephone Laboratories Inc
Current assignee: AT&T Corp
Priority date: 1945-04-20
Filing date: 1945-04-20
Publication date: 1951-02-13
Anticipated expiration: 1968-02-13

Description

H. A. BAXTER E1 AL MOTION TRANSLATING MECHANISM Feb. 13, 1951 5 Sheets-Sheet l Filed April 20, 1945 A BAXTER INVENTORS W0 LEW/S %C%ma-4 ATTORNEY Feb. 13, 1951 H. A. BAXTER ET AL MOTION TRANSLATING MECHANISM 5 Sheets-Sheet 2 Filed April 20, 1945 ms m Mm m %& A aw s fl RB W M ATTORNEY H. A. BAXTER ET AL MOTION TRANSLATING MECHANISM Feb. 13, 1951 5 Sheets-Sheet 3 Filed April 20, 1945 FIG. J

FIG. 4

H A. BAXTER W D. LEW/5 INVENTQRS:

ATTORNEY Feb 13, 1951 H. A. BAXTER ET AL.

MOTION TRANSLATING MECHANISM 5 Sheets-Sheet 4 Filed April 20, 1945 FIG. 5

ATTORNEY 5 Sheets-Sheet 5 H. A. BAXTER ETAL MOTION TRANSLATING MECHANISM Feb. 13, 1951 Filed April 20, 1945 k? mm ,R m k \v east ATTORNEY Patented Feb. 13, 195i MOTION TRAN SLATING MECHANISM Howard A. Baxter, Green Village, and Willard D. Lewis, Little Silver, N. 3., assignors to Bell Telephone Laboratories, Incorporated, New York, N. Y., a corporation of New York Application April 20, 1945, Serial No. 589,336

Claims.

This invention relates to motion translating mechanisms of the type in which the operation of the rotating shaft is translated into a reciprocating rectilinear movement.

The object of the present invention is the provision of. a motion translating mechanism of the type above referred to whereby a wave guide element in a radio signaling system is moved free of vibrations at high velocity in a rectilinear reciprocating movement along the opening of a reflector antenna forming a part of the radio signaling system.

In the drawing:

Fig. 1 is a front elevation of the translating mechanism shown in perspective, the wave guide element being positioned a small distance from one of its maximum operated positions;

Fig. 2 is a vertical central sectional view shown with the mechanism and wave-guide actuated thereby positioned midway along the opening of an antenna reflector in the radio signaling system;

Fig. 3 is a partial View shown with a number of operating parts in horizontal section taken on line 33 of Fig.2;

Fig. 4 is a partial view shown with a number of operating parts in horizontal section taken on line 4-4 of Fig. 2;

Figs. 5 and 6 are diagrammatic views showing the gearing mechanism and an element of the wave guide in its opposite maximum operated position;

Fig. 7 is a detail view showing one of a pair of intermediary gears in vertical sections taken on line 7-! of Fig. 3;

Figs. 8A1 and 803 are diagrammatic views shown with the wave guide element in its opposite extreme operated position; and

Figs. 832 and 8D4 are diagrammatic views shown with the wave guide midway along the opening of the antenna reflector.

According to this invention the element W of a wave guide in a radio signaling system is driven in a reciprocating movement along a rectangularly-shaped opening OP of an antenna reflector AR by a translating mechanism actuated by a motor M. This motor is operatively connected to a shaft l0 journaled in a sleeve I3 secured as shown in Fig. 1 to a circular base or mounting I4 as by a plurality'of screws Hi. The mounting I 4 as best seen in Fig. 2 is formed with a concentrically disposed hub or sleeve l9 fitted with sleeves 20 and 2! provided for receiving the stator ring of ball bearings 22 and 23 respectively.

a sleeve 24 in turn fitted in a collar 25 formed integrally with a yoke-shaped mounting H vwhile a number of bolts such as H! serve for securing the sleeve 24 and a bevel'gear l'l collectively to the collar 25 of yoke H, the bevel gear l1 meshing with a pinion It keyed on or formed with the shaft 10.

The circular mounting I4 is provided with a beveled edge 26 registering with a similarlyshapedcircular recess 2'! in a flange 33 formed with collar 25, the flange forming a barrier for preventing the entrance of dust particles into the casing or chamber formed by mounting [4, the sleeve I9, the sleeve 24 and the flange 33.

A stationary spur gear 23 is secured as by a number of screws 29 to the top disposed end of sleeve IQ for engagement with two similar intermediate gears 33 and 3| keyed on similar spindles 36Y and 3 I Y best seen in Figs. 3 and 7, journaled at their ends in ball bearings as BI and B2 which are held in position in openings in the arm H2 of the yoke-shaped mounting H and in openings in a cover 32 secured to the yoke-shaped mounting H by a number of bolts is, cover 32 in cooperation with the wall 33 of yoke arm H2 forming a casing for the gear 28, for the intermediate, gears 30 and 3| and for a gear 34. V

The gear 34 engages the gears 30 and 3| and is formed with a hub portion 35 in which is fitted the outer ring of a ball bearing 36, the inner disposed ring of which is fitted over a hollow spindle 31 formed with a flange portion 3'lY at its lower end secured to the arm H2 of yoke H as by a plurality of screws 38 best seen in Fig. 2, while the sleeve portion 35 of gear 34 is secured as by a number of screws 4| Y passing through a hub portion 39 formed with a second yoke Y mounted for rotation on the ball bearing 36 and a ball bearing 43, the inner ring of the latter being fitted over the hollow spindle 31 and its outer ring in a recess in the hub portion 39 of yoke H.

A gear 4| is keyed on the top end portion of hollow spindle 3'! and is held against longitudinal movement thereon by a nut 42 engaging the screw threaded end of this spindle while collectively securing the ball bearings 48 and 36 and a spacer member 43 against a shoulder portion SP formed at the lower end portion of the hollow spindle 3'! adjacent the flange portion 3lY.

On the arms Y1 and Y2 of yoke member Y is secured as by a number of screws 45, a cover member 44 shown in Figs. 1, 2 and 4 having a The rotor ring of these ball bearings is fitted in circular opening 46 disposed in axial relation with an opening 4! in the arm Yl of the yoke Y.

,ing in cover ring 13.

These openings are provided for receiving the ball bearings 48 and 49 serving for rotatably supporting a hollow spindle 50 having its top disposed end screw threaded for receiving a nut 5! serving for collectively securing the ball bearings and the common hub duplex formed

gears

52 and 53 against longitudinal movement on the hollow spindle 58' while cover members 84 and 86 secured to the arm Y! of yoke Y and to the cover 44 hold the ball bearings 48 and 49 and thereby the sleeve 50 against longitudinal movement. I s

The gear 4! meshes with gear 53 while gear 52 meshes with a gear 5t keyed on a 'eev 55, mounted on ball bearings 56 and 51 fitted into a circular projection 58 formed with cover 44. The lower disposed end of sleeve 55 is provided with a screw threaded portion for receiving a nut 59 serving to collectively secure the gear 54, the inner ring of ball bearing 5?, asleeve (i and the inner ring of ball bearing 56 against a shoulder portion Cl formed at the periphery of sleeve 55; This sleeve terminates at its topdis posed end portion with a collar 6| provided for securing the receiving end or mouthpiece W of a wave guide which will be hereinafter described in detail.

The am Hi of yoke H terminates at its free efid in the form of a Container 52 for receivin particles of material, such as lead, in addition to a vertically" disposed Weight 63 serving to counter-balance the arm of this yoke relative to its ailn H2, The Weight 63 is held in a v rtic'a1 adjusted position by the clamping action or a split ring Ill forced to close around the weight 63 by the pressure exerted on 'a' ring' 1| under the tightening effect of a number of screws 12. Similarly, the arm Y2 and yoke Y terminatein the form of a bearing surface on which is secured a sleeve E i and a weight in the form of a collar 65 in addition to a Vertically 1ongitudinauy' movable Weight 66 held. in adjusted position frictiohauy by the Clamping actieh of a Split 6'! forced to close around theperiphery of the movable weight by the pressure exerted on a ring 68 by the tightening effect or a neither er screws 69, the adjustment of weights 63 and 6d vertically being for thepurpose' of securing retahen r the yokes H and Y within a cemrhmiehter of grav ty in addition to the ta ahcmger their respective opposite arms 1-12 and YL The mouthpiece-ere- Inent W for the wave g uidiorrning part the radio signaling system is formed with a' portion extending at right angles relative was pivotal center in juxtapositfon to the rctanguIarly' shaped. opening OP in the reflector antennaAB as shown inFigs. 1, 2 and 6. This ni'outh piece element is formed with a flange portion 16 5| at thetop end of the secured to the collar U rotary mounted sleeve 55 by a plurality of screws SC. This sleeve as above described extends through an opening in the cover ring 13 itself secured to the circular projection 59 of cover {it as by a number of screws 1 the screws SC also securing a dust guard elementji over theannular space between the collar 6i and the open- The mouthpiece element W is formed with a tubing portion i1 extending downwardly to the middle length portion of sleeve 55 as shown in Fig. 2, while a tubing 18 extends upwardly into the sleeve 55 injuxtaposition to the lower end of tubing 1i, tubing iBbeing provided with a fiang e portion 19 secured to under side of yoke arm Yl by aplurality of screws 80.

To the lower disposed end of tubing i8 is se cured a tubing 8! of rectangular cross-section connecting with an elbow piece 82 secured to a cover 84 in turn secured to the arm Y! of yoke Y by a number of screws 35.

The cover 84 is provided with a reetangularlyshaped pro'jecticnf'havir'ig' an opening for securely receiving the lower disposed end of a tubing 83 housed in the sleeve 59 serving as a spindle for the unit gear 5Z-53 while the top disposed end of tube 33 is formed with a flange portion 71 as shown in Fig. 2 disposed in a recess in a cover fie fo'r holding the top end of the tube 83 in coaxial relation and in juxtaposition with a tubing 88 secured to; cover 86. The upper disposed end of tubing 88 connects with an elbow 89 in turn connecting with a tubing 99, the opposite end of which connects with a tubing an of circular cross-section and having a flange portion PR secured to the cover M of yoke Y at the pivotal center thereof as by a number of screws 92?. The tube 91 extends downwardly into the sleeve 31 on which the yoke Y i's rotatably mounted in juxtaposition with the upper disposed end of a tubing 92 having a flange portion flfse'cured as bya' number of screws 93 to the underdisp'osed side or" arm HZbf yoke member H. The 10 er di q d fi f u i a i 9% of rectangul'air" cro t etih he e o 5' connecting w t tubin earn az i ari 'oijection 9'1 formed with the arm HZ" or'yog' The top disposed end of tubing 95!? i formed" with a flange portion 98 provided for holding the tubntr Qf i iqmioi fi n' 91 i g-si taposition with an opening in a p'llujg 99 secui;d to cover 32 as by a number or, screws I90. The plug 99 is formed with elbow member l'il'l connecting with one end of a tubing {92, the opposite end o'f which connectswith a tubing H13 having a flange portion it, sepured to wcover 32 by a plurality of screws" Hi4. Tubing 163 extends downwardly into the hub 19 of mounting I5 in juxtaposition with the upper disposed en'dlof an axiauy disposed. tubing ms; t e; latter'ving a flange portion I96 abutting inst a flange porhien mi of a tubing we seen ,tp' the lower disposed end or nub Is by a he her of serews the tu in 0 n P Iifib h r i w h n ihg in) itself cthhetjihg with eie an ar appar tus, not s own, and whicli' forms no part of the present invention. l

, In a ica x m e s ai n f ne en translating mecha sm pr sms invention, the mauthhiece element w or the were game is driven in a reciprocating movement in massessition to he opening OP of the ahtehha rfnector AR by the operation off the' motor NI aghnected to the shaft [9. The operation Qf this shaft and that thepinion I16 keyed thereon is effective to rotate the beveled gear l1 and thereby the yoke H mounted on ball bearings 22 and 2'3} for exar nl l "n th direction indicated by the 6i iri' F1 1, 8132, 8C3 an'dL8D4 erm ne eom r es t me 9 w wave guide from the positionisho'wn in Figs. 3 i "in Figs. 6 and 8 3,

angular pos were t ih r i n. 9,

passing through the succe siv H degrees as h'w 8E2, de' Shown in Fig. 8C 3and 27'Qdeg res she'wh' Figs. 5 and 8D; to starting pcsitiion 8A1, l-"'ig;. 8C3, showing he" mouthpiece element atth e eph site end of the opening and 8132 showing the fouth'piece ia'way along the opening" was is i when. we e se a fi sition as shown in Fig. 8A1.

ment of gears 30 and 3| relative to stationary 7 gears 28 is effective to impart a rotary movement to gear 34 and thereby to yoke Y in opposite direction indicated by the arrow 12 in Fig. 8A1, but

- since the radius from the pivotal center of yoke H to the pivotal center of yoke Y is equal to the dis- I tance from the pivot of the guide wave W in the and the engagement of gear 52 with gear 54 keyed on the sleeve 55 to which a mouthpiece element is secured, the sleeve 55 is rotated in a direction opposite to that of yoke Y with the result that the mouthpiece element W is maintained in juxtaposition to the opening OP in the antenna reflector AR during its reciprocating movement therealong.

In actual operation the motion translating mechanism of this invention has been found to move the wave guide W at high reciprocating velocity substantially free of Vibrations while not requiring adjustment or repairs after a large number of reciprocating operations.

What is claimed is:

1. In a radio signaling device, a wave guide for said device having a rotatable mouthpiece at one end thereof, a base, a gear secured to said base, a lever member pivoted on said base, a gearing mechanism carried by said lever member connecting with the gear secured to said base, another lever pivoted at the free end of the first-mentioned lever member and having a gear connecting with said gear mechanism for rotation at twice the speed of the lever pivoted on said base and in opposite direction thereto, means carried at the freeend of said other lever member for rotatably supporting said mouthpiece and a gear mechanism operatively connecting said mouthpiece to the first-mentioned mechanism to cause said mouthpiece to generate a rectilinear reciprocating scanning movement upon the operation of said lever members.

2'. In a radio signaling device including a reflector antenna having a rectangular opening therein, a wave guide, a movable mouthpiece for said wave guide, having a tapered portion of rectangular cross-section disposed in juxtaposition to said mouthpiece, a motion translating mechanism for operating said mouthpiece, said mechanism com prising, a base having a hub portion, a yoke mounted for rotary movement on said hub portion, a gearing mechanism for actuating said yoke, a tubing partially extending into said hub portion and secured thereto, a second tubing partially extending into said hub portion in juxtaposition to the end of the first-mentioned tubing for rotary movement relative thereto upon the operation of said yoke, a hollow spindle secured to one arm of said yoke at a predetermined distance from the turning axis of the latter, a second yoke pivoted on said hollow spindle, a gear secured to the hub portion of said base, a gearing mechanism operatively connecting said gear to said second yoke to cause the rotation of the latter in opposite direction to the first-mentioned yoke, a third tubing extending into said hollow spindle having a flange portion secured to said second yoke, a fourth tubing carried by said second yoke extending into said hollow spindle in juxtaposition to said third tubing, a cover member for said second yoke having a circular projection at the end of one of its arms, a hollow spindle mounted for rotation into said projection, a fifth tubing secured to said second yoke extending into said hollow spindle and disposed at a distance from the turning axis of said second yoke, another tubing secured to said hollow spindle extending therein in juxtaposition to the end of said fifth tubing, said mouthpiece element being disposed contiguous to said fifth tubing and rotatable with said hollow spindle in a direction opposite to the rotation of said second yoke whereby said mouthpiece element is maintained in juxtaposition relative to the surface of said reflector antenna during the rotation of said second yoke, and the reciprocating movement of said mouthpiece, each of said tubings forming an element of said wave guide for said device.

3. In a radio signaling device including a reflector antenna having a rectangular opening therein, a wave guide for said device, a mouthpiece connecting with said Wave guide at one end thereof and having a tapered portion of rectangular cross-section coextensive therewith, the small end portion of said tapered portion having an oblong-shaped opening formed therein, a driving mechanism for imparting rectilinear reciprocating movement to said mouthpiece, said mechanism comprising a rotatable yoke, a motor, a gearing mechanism operatively connecting said yoke to said motor, a spindle carried by one arm of said yoke, a second yoke member pivoted on said spindle and having one arm of a length equal to the arm of said first yoke, a gearing mechanism for imparting a planetary movement to said second yoke upon the operation of said first yoke in opposite directions thereto, a spindle carried by said arm of said second yoke for pivotally mounting said mouthpiece, a gearing mechanism operatively connecting said mouthpiece to said second yoke for causing said mouthpiece to generate a planetary movement in a direction opposite to that of said second yoke for maintaining said mouthpiece in juxtaposition with respect to the rectangular opening in said reflector antenna.

4. In a radio signaling device including a reflector antenna having a rectangular opening therein, a wave guide, a mouthpiece for said wave guide having a tapered portion of substantially rectangular cross-section, a mechanism for imparting rectilinear reciprocating movement to said mouthpiece, said mechanism comprising a drive shaft, a motor for rotating said shaft, a rotatable yoke member operatively connected to said shaft, a spindle carried by one arm of said yoke member, a second yoke member mounted on said spindle for rotation thereon, a weight carried by the other arm of said first-mentioned yoke for balancing the first-mentioned arm,

-means carried by one arm of the second-mentioned yoke at a distance corresponding to the distance of the turning axis of the first-mentioned yoke with respect to said spindle, for rotatably supporting said mouthpiece, a weight carried by the other arm of said last-mentioned yoke for balancing said mouthpiece, a gear mechanism actuated by the first-mentioned yoke for actuating said other yoke at twice the speed and :7 ina direction opposite thereto, :a gearing mechanism actuated by the rotation of said other yoke for imparting a rotary movement to said mouthpiece in a direction opposite to its supporting yoke .to cause said mouthpiece to generate a rectilinear reciprocating movement in juxtaposition with respect to a straight-line surface of the small end of the rectangular opening i Said reflector antenna.

5. In a radio. signaling device including a reflector antenna having a rectangular opening therein a wave guide, a mouthpiece connected to said wave guide and having a tapered portion of substantially rectangular cross-section coextensive with respect thereto and with the smaller end portion of said tapered vportion in juxtaposition with respect to the small end of said mouthpiece, a driving mechanism for imparting a reciprocating rectilinear movement to said mouthpiece, said mechanism comprising a rotatable yoke member, a motor, .a gearing mechanism operatively connecting said motorzto said yoke member for actuating the latter, a stationary supporting spindle for said yoke member, a spindle secured to a stationary gear mounted .on said stationary spindle, a spindle carried by one arm of said yoke, a second yoke mounted on the lastmentioned spindle, a gearing mechanism connecting the second-mentioned yoke to said stationary gear for rotating said second yoke upon the operation of said first-mentioned yoke, said second yoke having means for pivotably receivingsaid mouthpiece. disposed at a distance equal to that of said stationary supporting spindle to the third-mentioned spindle, and a gearing mechanism .for rotating .said mouthpiece in a direction opposite to the direction of movement of the secondemetnioned yoke to cause said mouthpiece to generate a rectilinear reciprocating movement upon the operation, of said motor.

HOWARD A. BAXTER.

D. LEWIS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES, PATENTS Number Name Date 952,383 Tomer Mar. 15, 19-10 2,231,929 Lyman Feb. 18, 1941