Патент USA US2404377код для вставки
July23,1946._ ; J_ A, HERBST _ ADJUSTMENT DEVICE 2,404,317‘ 4 Filed Jan. 3, 1944 OF FR/OT/O/V ' s 160 166 54 16b INVENTOR. JOHN 14 . Ill-77567 2,404,377 Patented July 23, 1946 UNITED STATES PATENT oFFIcE ADJUSTMENT DEVICE‘ John A. Herbst, Oradell, N. J., assignor' to Federal Telephone and Radio Corporation, New York, , Y., a ‘corporation of Delaware Application January 3, 1944, Serial No. 516,876 ‘ 14 Claims. (01. 74-40) 1 2 . r , The present invention relates to improvements in adjustment device, and more particularly to a device whereby the angular position of one of two interconnected shafts may ‘be adjusted rela tive to the angular position of the other shaft. be attached to any known type of device the . There are numerous situations, as for example in connection with radio transmitters and re such means, such for example as a variable con ceivers, in which it is desirable to rotate two separate control shafts simultaneously, the shafts being disposed in parallel relation or otherwise not ‘in alignment. One instance of the above would comprise the concurrent adjustment of the usual spaced-apart condensers utilized for tuning purposes. ‘ It is often desirable, however, to provide not only for the concurrent rotation of two such shafts, but also for the individual adjustment of one of these shafts relative to the other without disturbing in any way the setting ‘of the shaft tion. As indicated, shaft Ii has a greater degree of resistance to rotation than shaft 8. ; Shafts 6, 8 are positioned in substantially parallel relationship.‘ Each of they shafts may operation of which may be controlled through denser. A dial I0 is provided for manually actu ating shaft 6. A pair of drums l2, I4 are se curely mounted on shafts 6, '8 respectively. Drum N is partially hollow as shown. An elongated ?exible connecting member en circles, at least ‘partially, each of the drums l2, l4. This ?exible member preferably comprises ‘a belt or rope l6 which is secured to drum [2 , at point l8, the latter constituting the mid point of the singleturn of rope 16 around drum l2 as illustrated. Rope l6v is also wound once around drum l4, and the ends of the rope after the adjustment of which is not being made. Con 20 passing through openings IS ‘in the wall of the ventional mechanisms for 'ganging together sev drum, are joined together at 20. Thus the rope eral condensers, for example, do not provide for l6 has two portions "in, IE1) which are free of this latter contingency. drums l2, l4 and extend therebetween. A spring It is accordingly the principal object of the or other resilient element 22 secured to the in present invention to provide a simple and inex terior of drum l4 and also the junction point 20 I pensive mechanism for permitting an individual of rope l6 acts to maintain the rope‘ at the de adjustment of the angular position of one of two sired degree of tension, thus overcoming any shafts, the two shafts being normally concur loosening of the rope due to moisture or for other rently rotatable by means of a single control. reasons. It is a further object of the present invention -Mounted between shafts 6, 8 is a third rotat to provide a, flexible coupling between ‘two shafts, able shaft 24, suitably pivoted by means such as the coupling normally acting to cause simul a bearing 26. A handle 28 permits manual rota taneous rotation of both shafts upon manipula tion of shaft 24. , tion of a single control, and to additionally pro Secured to shaft 24 is a support 30 positioning vide for the rotation of a single ‘one of‘ these a pair of ?ngers 32, 34 in parallel spaced apart shafts in response to a change in con?guration of relation, these ?ngers being designed to pinch the coupling. 7 , in the two portions l6a, I?b of rope IB'so asto Further objects and advantages will be ap keep these rope portions normally in a slightly parent from the following description of pre bowed condition. Thus when handle 28 is in ferred forms of the invention and from the‘draw-. 40 center position, the con?guration of rope I6 is ing, in which: approximately as shown in Fig. 2A. Fig. 1 is a perspective view of a preferred 'form Rope i6 is designed to slide freely over ?ngers ' of apparatus incorporating the present inven 32, 34. Therefore when handle 28 is in center tion; position, and the ?ngers 32, 34 have the rela Fig. 2 is a set of diagrams illustrating the principle of operation of the form of the inven tion shown in Fig. 1; and ’ Fig. 3 is another set of diagrams illustrating ' the principle of operation of a, modi?ed form of the apparatus shown in Fig. '1. _ , _ In Fig. 1 is shown a pair of rotatable ‘shafts ' tion with'rope portions l6a, 16b as shown in Fig. 2A, a manipulation of dial l0 to rotate shaft 6 will also rotate shaft 8 due to the action of rope I 6, which as above described is secured both to drum l2 at point 18, and to drum l4 through spring 22. Thus vmeans are provided for ‘rotat ing both shafts '6, 8’ simultaneously and in the 6, 8, respectively mounted in bearings ‘I, 9, the same direction upon manipulation of a single I latter contacting their respective shafts with . control. I . different degrees of friction so that the shafts If it is now desired to rotate shaft 8 while main will have different degrees of resistance to rota .55 taining the position of ‘shaft '6, handle 28 is actu 2,404,377 3 objects of my invention and the accompanying ated. This actuation may be either clockwise or counterclockwise. If the actuation is counter clockwise, ?ngers 32, 34 will both move to the left as viewed in Fig. 2B. Rope portions “5a., I61) will assume the con?guration shown therein, or in other words portion we will be straightened claims. a I claim: ' 1'. A pair of rotatable shafts interconnected by a belt-like driving element, means for relatively impeding the rotation of one shaft. means caus out, orshortened, and portion 1th will be fur ing differential tensioning of two portions of the belt-‘like element between shafts. tofrotate the ther The bowed, aboveormode lengthened. of ‘operation '_ ' would " f normally other shaft. result in drum l2 rotating clockwise and drum 10 -' ' - 2. A pair of rotatable shafts interconnected for l4 rotating counterclockwise, each rotation being ' " driving operation one by the other by a belt-like element, means for relatively impeding the rota ‘of the same magnitude. However, it has been~ tion of one shaft, means causing differential ten stated that shafts 6, 8 have different degrees of . sioning of‘ two portions of the belt-like element resistance to rotation. Since shaft‘? has a greater degree of resistance to rotation than shaft 8, 15 ‘between shafts to rotate the other shaft. ' 3. A pair of rotatable shafts interconnected by only drum 14 will rotate, and drum I2 will remain‘ a ‘belt-like driving element, means for giving one stationary. This is indicated in Fig.‘ 2B, which shaft greater resistance to rotation than the other shows the unchanged position of point l8, while shaft, means for normally applying tension to point 20 has moved in a counterclockwise direc tion. In Fig. 20 the same elements have been 20 both sides of the belt-like element, and means for adjusting said last-mentioned means to'vai'y shown ‘after a clockwise rotation ‘of handle 28. saidtension differentially whereby one shaft is In Fig. 3 two ?ngers 32’, 34' mounted on sup rotated independently of the other. port 35 have been positionedon the opposite side '7 ~ . 4. In combination, a pair of. rotatable shafts, of drum M from that on which drum I2 is located. means respectively associated with each of said 25 Fingers 32’, 34' are now mounted for rotation shafts for producing different degrees of re about a pivot 38 by means of handle 40. A pair sistance to rotation'thereof, a belt-likeI-member of pins 36 keep rope portions 160., I61) away from interconnecting said shafts, means‘ for rotating the sides of drum It! so as to permit effective oper one of said shafts, whereby upon operation of ation of , the‘ adjusting assembly.‘ The shaft 6 saidlast-mentioned means said belt-like member will, in this case, also have the greater resistance will cause simultaneous rotation of the other of to rotation. V a said shafts," adjustable means normally. acting to ‘The principal difference between the operation draw together the interconnecting portions of said of the device shown in Fig. 1 and the device of belt-like member, and means for moving said Fig. 3 is that in the former showing thev drum I4 adjustable means in a substantially lateral direc rotates in the same direction as handle 23, while tion whereby upon operation of said last men in the latter'a' rotation of handle 40 counterclock tioned means said belt-like member will cause ro wise produoes av clockwisarot'ation of drum 14. tation of the vshaft having the lesser degree of As shown in'Fig. 33, this is due to the fact that rope portion [6a is lengthened and portion 16b shortened‘. ‘In Fig."3C the elements are shown > resistance to rotation only. 40 I after a clockwise rotation of handle 4. While ?exible connecting member l6 has been describedas a roperor belt, other forms .of flexible‘ connectors such as 'a wire orfcord may beem ployed in place'thereof. Also it is not necessary L that rope It be wound around drums l2, l6. Rope it can if desired encircle the shafts themselves without any intermediate meansj Furthermore rope IE need not encircle the shafts or drums for more than approximately a half turn, the'only’ 50 requirement being that the rope be in non slipping relation therewith. In addition tension ing spring 22 may obviously be omitted if desired. It should also be noted'that whereas the means ' for keeping shafts 6, 8 under different degrees - of‘ tension has been described as a pair of bear-J vin'gs ‘l, Q'engaging the shafts with different degrees wholly or in parton the‘natu're of'the device to I adjustable means is; capable of‘ movement later ally-in opposite directions, resulting in, a selective rotation in either direction of "the shaft having therlesser degree of resistance to rotation. 16. In a device of thetype in which a‘pair of control shafts are disposed side-by-side in sub stantially parallel relation, and-in which a belt like connecting, memberhaving its ends joined together encircles at least partially each of said shafts in non-slipping relation, thereby forming two portions of said belt-like member extending between said shafts, the combination of means respectively engaging each of said shafts for pro ducing different degrees of resistance to rotation thereof, adjustable means contacting each of said belt-like member portions, and means for adjust ing the position ofsaid last mentioned means so . as to decrease the effective length’ of one of said 7 of friction, it will be clear that the degree of re r'sistancerto rotation of each shaft may depend a 5; Thecombination of claim:4, in which .said portions and increase the effective length of the 60 other. , _ ., .7 I, 7.. The combination of claim 6 vin-which said which the shaft is connected. 1 In the case of the . adjustable means includes a U-shaped element _ usual variable condenser, for example, tension iscontrolledby a screw which is adjustable to positioned so that the portions of. said belt-like member extending between said shafts frictionally regulate the amount‘of force required to actuate the rotor. . Many other tension-controlling mech anismswill be readily apparent to those skilled , in the. art, and 'it should. beunderstood that the I invention is not limited to the one shown. 'While I have described. above thezprinciples of my invention in connection with a‘ speci?c em 65 engage respective arms of. said u-shapedv-ele jment. ' I " . V 8. The combination ‘of’ claim-6,¢with further meansforrotating one-of said shafts-whereby said .belt-likeconnecting member will act to ro- . tate concurrently the other. Qfjisajzdivshalfts in re_ sponse thereto. - 1 .r . ~ - 1 9. In a’ mechanism including. va 'Tpair I of icontrol bodiment .and'a modi?cation thereof,- it is to be clearly understood that this descriptionyis made ‘shafts disposed side-byeside in. ~substantially only. by way of example and not as a limitation parallel‘ relation; the combination,» of. means 1 re ' on the scope of my invention as set forth-inthe 75 spectively engaging each of said . shafts for "pro 2,404,377 ducing different degrees of resistance to rotation thereof, an elongated ?exible connecting mem— ber having its ends connected together, said member being Wound at least once around each shaft in non-slipping relation therewith, thereby forming a plane perpendicular two connections to between the shafts, saidadjustable shafts 6 means between said shafts, said means compris ing a belt-like memberghaving its ends connected together and at least partially encircling each of said shafts in non-slipping relation, thereby forming two portions of said member extending between said shafts, and adjustable means posi tioned on the opposite side of one of said shafts from the other of said shafts, said belt-like mem means disposed between said shafts and acting to draw said two connections together to tighten ber slidably engaging said adjustable means, same, means for moving said adjustable means '10 whereby upon selective adjustment of said ad laterally, and means for rotating one of said justable meansone of the said portions of said shafts, whereby upon operation of said rotating belt-like member will have its effective length means said ?exible connecting member will cause increased, and the other of said portions will have a corresponding rotation of the other of said its effective length decreased. shafts, and whereby upon operation of said mov 13. The combination of claim 12, with further 7 ing means, said ?exible connecting-member will stationary means slidably engaging each of said cause rotation of the shaft having the lesser portions of said belt-like member to cause said degree of resistance to rotation only. ‘ member to assume a substantially outwardly 10. The combination of claim 9, further com bowed con?guration, thereby preventing contact prising resilient means connected to one of said with said one shaft of that section of each of 20 shafts for maintaining said ?exible connecting said portions lying between said other shaft and member under a desired degree of tension. said adjustable means. 11. The combination of claim 9, further com 14. ‘The combination of claim 12, in which said prising a pair of drums respectively securely adjustable means comprises a pivoted support, mounted on said shafts, said ?exible connecting and a pair of ?ngers on said support and dis member being wound on said drums.v posed on opposite sides of said pivot, the two said _l2. In a device having a pair of rotatable shafts portions of said belt-like member respectively disposed side-by-side in substantially parallel‘ relation, the combination of ?exible connecting slida'bly engaging said ?ngers. ' ' JOHN A. HERBST.