Патент USA US2409618код для вставки
Oct. 22, 1946. S. Jv. ELLIOTT EI‘AL4 ` 2,409,617 \ SIGNAL DISTRIBUTOR Filed July 18, `1942 2 Sheets-Sheet l @4M l l5 _7 /6 Í , | "C262 60 37 ’52 3.9 f _32 Màj-3 /3 ‘ 44 50“ê /0 56 // ‘I l 50'30' . 44 Í 33 28 || , ‘l 27 ` - 35 .53 i5 | l /4 @MÃ nu@v ATTORNEY ' 0¢f- 22» 1946- s. J. ELLIQTT Erm. 2,409,617 S IGNAL DISTRIBUTOR Filed July 18, 1942 2 Sheets-Sheet 2. F/G. 3 GAA/ao TIME ByC/0 ~ ' n QQ l SM. T/-lo/gmsl M0( Arma/yp’ Patented Oct. 22, 1946' 2,409,617 UNITED STATES PATENT GFFICE 2,409,617 SIGNAL DISTRIBUTOR Stanley J. Elliott, Forest Hills, N. Y., Ole M. Hov gaard, Murray Hill, N. J., and Rudolph F. Mal lìna, Hastings-on-Hudson, and Frank M. Thomas, Jackson Heights, N. Y., assignors to Bell Telephone Laboratories, Incorporated, New York, N. Y., a corporation of New York Application July 18, 1942, Serial No. 451,506 6 Claims. (Cl. 200-30) 1 2 This invention relates to signal distributors, and particularly to devices of that character which are associated with radio receiving equip to the motor are indicated at M. The lower four contact pairs I, 2, 3, 4, which for convenience will hereinafter be called the lower deck con ment. The object of the invention is to provide an tacts, Fig. 5, serve to selectively connect the four receiving antenna circuits on the airplane efficient low capacity signal distributor particu to an amplifier, Fig. 4. The upper four contact larly adapted for use in association with the re pairs I, 2, 3, and 4, which for convenience will ceiving circuits on intercepter airplanes provided hereinafter be called the upper deck contacts, with equipment to transmit radio signals which serve to connect the output of the amplifier to are reflected back from other airplanes to the 10 a suitable indicating device, this connection be intercepter planes and thus furnish information ing made selectively and synchronously with the as to the location of such airplanes. The device, lower deck contacts. The lower deck contacts however, is of general application. are closed shortly before the upper deck contacts, A feature of the invention is the provision Fig. 5, and the lower deck contacts are opened of means for preventing chatter of the contact shortly after the upper deck contacts have springs of the signal distributor, which springs opened. When so operated, noise in the output are rapidly actuated to make and break the circuit, which otherwise would be caused by radio signal receiving circuit. switching the antenna circuits in and out, is pre Another feature is the provision of means for vented from reaching the indicating equipment, permitting adjustment of the contacts Without 20 since due to this arrangement the indicating the necessity of dismantling the device. circuits are not connected to the amplifier when Other features will appear from the detailed the antenna circuits are being connected and description and the appended claims. disconnected. In the drawings: ' The specific construction and arrangement of - Fig. 1 is a plan view of the device; 25 the two decks of contacts I, 2, 3, 4 by means of Fig. 2 is a side View partially in section; which we have succeeded in eliminating contact Fig. 3 is a sectional View on line 3-3 of Fig. 2; chatter will now be described. Fig. 4 illustrates a circuit arrangement with The four socket- assemblies I5, I6, I1, and I8, which the switch may be used; and Fig. 1 on the upper housing which support the Fig. '5 is a view to show the relative closures 30 Contact springs I9, 20, 2I, and 22 are similar co and openings of two sets of contacts in the cir axial conductor sockets. The four socket as cuit arrangement. semblies on the lower housing are similar. Re Referring now to the drawings, Fig. 2, l0 and ferring, for example, to'socket I8 of the upper ll indicate a pairof housings, I0 indicating the housing shown in detail in Fig. 3, this socket com upper housing and II indicating the lower hous 35 prises a metal sleeve member 23 containing two ing. This pair of housings or casings is secured insulating washers 24, 25, which support a stud together by clamps I2. These casings house two 26 having a slot into which the contact spring sets of similar equipment; that is, each housing 22 of contact 4 which may be of Phosphor bronze, contains four pairs of contacts, the four pairs in is forced and anchored by rivets. Each spring the upper housing I0 being indicated by the 40 has its free end looped back on itself and riveted numerals I, 2, 3 and 4, Figs. 1 and 3. The hous to the body portion of the spring as shown. It ings also contain other equipment for performing is essential that these loops be formed substan the necessary operations to open and close these tially as shown, that is, that the side s be contacts as required to receive the radio im straight in order to give maximum stiffness to pulses. Of the four pairs of similar contacts I, 45 the structure. We discovered that this is the 2, 3, and 4 in the lower housing II, only two can construction which eliminates chatter. If the be seen in the figures, Fig. 2. These two are in side s is not straight the spring chatters when dicated by the numbers I and 2. These two sets rapidly actuated by the sleeve I3. By having the 4 or decks of four pairs of contacts as they will side s straight, a condition is approached, due to hereinafter be called, are rapidly actuated by 50 not working the member in bending but in com a sleeve member I3, Fig. 2, preferably of hard pression, that maximum stiffness or rigidity is rubber, which is eccentrically mounted with re attained. We prefer to so shape the spring as spect to- the shaft assembly 28, 31. This sleeve to have as nearly as possible three straight sides is driven by an electric motor mounted in casing with sharp radii, that is, to approach a rectangu I4, as will be later described in detail. The leads 55 lar form. We discovered that no chatter occurs 2,409,617 3 4 on the make or break of springs constructed and mounted in this manner even at high speeds oi rotation of the sleeve I3 which actuates the four sets oi contacts of each deck. Although the tors associated with the lower deck contacts are a part of the four input circuits from the :four antennas respectively. As shown in Figs. l, 2 and 4, a similar arrange shaft of motor I4, through the coupling 21, drives Cl ment is provided for the output circuits from the arnpliiier, the four central coaxial conductors the shaft- 28 at a high rate of speed, for example C101, C202, C303, 04C4 shown structurally in Fig. 1,800 revolutions per minute, the sleeve I3 itself l, being associated with the upper deck contacts. which actually engages the looped portions of the As shown in Fig. 4, the four input central co springs of the upper and lower contact sets actually rotates very slowly in the opposite direc axial conductors C101, C202, C303 and 04C4 asso tion on its ball bearing mounting, and effects the ciated with the lower deck contacts I, 2, 3, 4 are make and break of the contacts I, 2, 3, 4 by a successively connected by said contacts I, 2, 3, 4 reciprocating motion due to the following con to conductor ‘Il’ and thence to the amplifier. struction: A shaft 35i of hard rubber carries the The output circuit of the amplifier, connected to sleeve i3 also of hard rubber. Ball bearings 3l, conductor 1I, is successively connected by con 32 are provided, their outer races secured to the tacts i, 2, 3, ‘i of the upper deck to the four cen sleeve I3 and their inner races to the shaft 38. tral coaxial conductors C101, C202, C303, 04C4 and The ends of shaft 3i) fit into eccentrically lo thence to the indicating devices. cated apertures in members 33, 34. The lower When it is desired to have access to the equip member 33 is integral with shaft 28. Inter 20 ment in the upper housing Ill, it is merely neces mediate shaft 28 and member 33 is a ball bearing sary to remove the screws E!! which secure the 35 mounted in a bearing plate 36. The upper cover 52 to the upper housing. When it is de member 34 is integral with a member 31 which sired to have access to the equipment in the lower has a ball bearing 33 in bearing plate 39. Since housing, it is merely necessary to remove screws -the shaiît 2B and upper bearing shaft 3'! are such as 53, which secure the upper and lower central and the apertures for shaft 3B are ec centric, it will be evident that the sleeve or cam i3 has a reciprocating motion, as pointed out housings to the mounting assembly plate 55 and elevate the entire unit, the shaft 28 being thus removed from the hose coupling 21, above, which results in four makes and breaks oi the upper and lower deck contacts for each As described. the shaft assembly which carries the eccentrically mounted contact actuator con revolution of the shaft 23 which is driven by the motor. We also provide an arrangement whereby the closed period of each contact can be adjusted in dependently from outside the casing even when sists oi a shaft 30 0i hard rubber, the sleeve or the signal distributor is running, which facili tates adjustment operations. In the signal dis tributor the contacts are all normally closed. The contact force may be deñned as the minimum contact actuator i3 of hard rubber, the ball bear ings Ei, for the sleeve, and a pair of members S3, 34 which have the oiî~center apertures for the shaft Sil. The members 32, 34 are provided with counterbalancing weights to prevent vibration; that is, to balance the rotating structure. This shaft assembly is cheap to manufacture and eili cient in operation. force required to open the closed contacts when 40 The base coupling shown is of soft gum vul there is clearance between -the contact springs canized rubber and eliminates critical adiust~ and the sleeve or cam i3. The arrangement for ments and reduces vibration. adjusting the upper deck contacts can be best What is claimed is: seen in Fig. 2. A similar arrangement is pro l. ln a signal distributor, a ser; .‘ of stationary; vided ior the lower set. Each housing ID and I I contacts, a series of movable contacts engaging contains a phenol `libre insulating disc 56, Fig. 2, raid stationary contacts, each of said movable and each disc is secured a plate 44 of Phosphor contacts being in the vform of a resilient spring bronce secured to said disc by screws. The anchored at one end and havin‘r its [ree end screws 51 for the upper plate 44 may be seen looped back on itself and ancho-red to the body in Fig. 3. The plate 44 carries the upper four 50 portion @i the spring and contact actuating contact studs, which may be of brass, with which member adapted to» said loops in succes~ the loops of contact springs I9, 2D, 2|, 22, Fig. 3, sion to force them out of Contact with the re respectively, normally engage. Four hexagonal spective stationary contacts. socket set screws 40, 4I, 42, 43, Fig. 3, mounted 2. In a signal distributor, a series of Contact in tapped holes in the ends of arms 45, 46, 41, 55 studs arranger'. in a circle, a series of movable and »i8 are accessible through holes 50, Fig. 2, contact members in the form of resilient springe, in the upper housing I0. These screws bear anchored at one end and having loops at the other end normally engaging said contact studs, in and out by a suitable tool inserted in. the sock and a member mounted eccentrically and adapted ets through the openings in the housing Il! the 60 to open said contacts in succession by forcing said radial positions of the stud contacts may be loops out of contact with said studs. altered. -~ Tin a signal distributor, a series of contact against the body of plate 44. By turning them A precisely similar arrangement is provided for , a series of movable spring contact members adjusting the contacts I, 2, 3, 4, in the lower normally engaging said studs, s id members being` housing II. The holes in the lower housing II 65 anchored at and having loops at their are designated 50'. As shown schematically in Fig. 4, the four an tennas hereinbefore mentioned are connected to the central coaxial conductors associated with the lower deck contacts two of which conductors are 70 shown structurally in Fig. 2 and designated C101 and C303. The other two diametrically opposite other ends, each. loop having a number of sub~ stantiaily straight sides, and means for succes sively forcing said members out of contact with said studs. 4. In a signal distributor, a series ol’ contact studs, a serios of movable contact members in the i'orm of flat springs anchored at one end and having their free ends bent back ou themselves and secured to the body portion of the spring to central coaxial conductors 02C2 and C40“1 asso elated with the lower deck contacts cannot be seen in Fig. 2. The four central coaxial conduc 75 form loops normally engaging said studs,` the por 2,409,617 5 tions of the loops adjacent the secured ends being contact members of resilient spring metal an chored at one end and at their other ends being formed in substantially rectangular loops which 5. In a signal distributor, a series of contact encircle and engage said studs, and an actuating studs, a series of movable contact members in the form of flat springs having their free ends 5 member to successively force said loops out of bent back and anchored to the body portions of contact with said studs. substantially straight, ' the springs to provide a substantially rectangu lar loop, and means for actuating said members to force said loops out of contact with said studs. 6. In a signal distributor, a series of contact 10 studs arranged in a circle, a series of movable STANLEY J. ELLIOTT. OLE M. HOVGAARD. RUDOLPH F. MALLINA. FRANK M. THOMAS.