Патент USA US2410178код для вставки
06t- 29, 1945- A. G. MILASUS TELEPHONE L‘INE \PULSING DEVICE Filed Nov. 9; 1945 2,410,173 2,410,178 Patented Oct. 29, 1946 UNITED STATES PATENT OFFICE 2,410,178 TELEPHONE LINE PULSING DEVICE Aloysius G. Milasus,_ Roselle, N. J. Application November 9, 1945, Serial’No. 627,731 5 Claims. (01. 1.7.9—90) 1 2 a collar 29. and a coil spring ‘M is positioned be This invention relates to telephone equipment tween collar 20 and solenoid Iii‘ which biases and more particularly to a line pulsing device for plunger member IT to a position wherein contact operating automatic of?ce equipment of a tele roller I9 engages the outermost non-conducting phone system. . When a‘ telephone subscriber’s station is com C1 segment I4 of‘ bar member I3. Conductor II is electrically connected to arm I9. In the normal nected, to automatic o?ice equipment, such as in deenergized condition of solenoid i6. spring 2| the widely used dial system, some means. must thus maintains conductors II and I2 discon be included in the subscriber’s equipment for nected. opening and closing the line circuit rapidly a pre~ Solenoid I6 is provided with an energizing determined number of times. In the well-known winding 22', one end of which is connected dial device in current widespread use, a ?nger through a retarding inductor 23 to one terminal plate is provided with holes in it. When the of the secondary winding of a step-down trans ?nger is placed in a hole and-the dial rotated former 24-. The other terminal of the trans to a ?nger stop a helical spring is wound up. When the dial is released, the spring. causes it to 15 former: secondary winding is connected to a buss rotate to its normal position, operating a ratchet as it turns; this causes a pair of contacts. to open and close the circuit the number of times indi cated‘ by the number dialed. A main object of the present invention is to provide a novel and (improved circuit pulsing bar 25hf-Wlllg?0illle0ted' thereto the movable con tact arms of ten switch members designated as S--I to S——Ill; respectively, which may be of the - normally open spring-biased push-button type. The end of winding 22’ is connected‘ to the sta tionary contact of switch S-IO. Winding 22' is progressively tapped at nine points along its length and the taps are respec tively connected through the respective compen ventional dial device, and being effective to furnish the required line pulses in a much shorter 25 sating resistors R,—I' to R,——9 t0 the respective stationary contacts of switch members S—~I to time than the dial device. 8-9. 1 A further object of the invention is to provide The primary winding of transformer 24 is con an improved telephone line pulsing structure nected to an appropriate source of alternating which is very rapid and reliable in operation and current, such as to the 110 volt house current line. is very economical to manufacture. Winding 22 includes a su?icient number of Further objects and advantages of the inven turns and has a resistance'such that when switch tiOn will appear from the following description S—I0 is closed a magnetomotive force is de and claims, and from the accompanying drawing, veloped, in solenoid I6 which is e?ective to draw wherein the ?gure is a schematic diagram of a telephone line pulsing device constructed and 35 plunger member IT rearwardly against spring ZI to a position wherein contact roller member I9 arranged in accordance with this invention. engages the rearmost non-conducting portion Referring to the drawing, II and I2 designate l4. In so doing, roller member I9 successively conductors respectively connected to the tele engages ?ve conducting segments I5, producing phone line terminals, said conductors being adapted to establish a circuit for furnishing a 40 ?ve pulses in the telephone line. When switch S—Ill is released, plunger I'I' returns to its normal line pulse each time they are connected together. position, producing five more pulses. Mounted in the subscriber’s equipment is a sta Resistance R-9 is of such a value that in con tionary bar member I3 formed with alternating junction with the number of turns of winding non-conducting portions I4 and conducting por tions I5, there being six non-conducting seg 45 22 included at its top and with the resistance of the included turns a magnetomotive force is de ments I4 and five ‘conducting segments I5. Con veloped in solenoid I6 when switch S—!! is closed ductor I2 is electrically connected to each of the which is sufficient to draw plunger member I‘! conducting segments I5. rearwardly against spring 2| to a position where Mounted in the subscriber’s equipment with its axis extending parallel to bar member I3 is a 50 in roller member I9 engages the rearmost con ducting segment I5 of bar member l3. In so solenoid I6 having an axial, movable plunger doing, roller member I9 causes ?ve pulses to be member I‘! positioned therein. The outer end of delivered to the telephone line. When switch plunger member I‘! carries an arm II! which is S-—9 is released, plunger I‘I returns to normal provided with a contact roller I9 adapted to en gage bar I3. Plunger member I‘! is provided with 55 position, producing four more pulses. means for. the above purpose of very much simpli?ed structure, as. compared with the con 2,410,178 Resistor R—8 is of such a value that the plunger will be drawn rearwardly when switch fore it is intended that no limitations be placed on the invention other than as de?ned by the scope of the appended claims. ber l9 engages the ?fth non-conducting seg What is claimed is: ment I4, producing four pulses on its rearward Cl 1. A telephone line pulsing device comprising movement, and producing four more pulses when a bar member having a plurality of linearly switch S--8 is opened to release plunger ll. The spaced contact portions, a solenoid arranged with remaining resistors are similarly graduated in its axis parallel with said bar member, a mov value so that the closing and opening of their associated switch members provides selective 10 able plunger axially positioned in said solenoid, S—8 is closed to a position wherein roller mem movement of plunger member I‘! to selectively produce the desired number of line pulses. t is thus possible to selectively obtain from one to ten pulses in the line by momentarily closing a corre the outer end of said plunger carrying an element in movable engagement with said bar member, a retarding inductor connected in the energizing circuit of said solenoid, a first line conductor con nected to said contact portions, a second line spondingly numbered switch member. conductor connected to said plunger-carried ele_ Retarding inductor 23 is provided to slightly ment, and means for momentarily moving said delay the building up and decay of magnetomo plunger inwardly of said solenoid a predeter tive force in solenoid l6 solas to dampen the mined distance. motion of plunger I‘! slightly and to assure sub 2. The structure of claim 1, and wherein said stantial contact of roller member IS with con 20 means comprises a tapped connection to said ductor segments l5 as said roller member pro solenoid and a resistor in series with said tapped gresses along bar member l3. Where faster op connection. eration of the pulsing device is required, retard_ 3. The structure of claim 1, and wherein said ing inductor 23 may be omitted. plunger is spring-biased to a normal position Whereas in the conventional dial system the wherein the plunger-carried contact element en forward rotation of the dial merely winds up its gages a non-conducting portion of said bar mem spring and produces no pulses, in the device of ber, and wherein said means comprises a plurality the present invention pulses are produced both of tapped connections to said solenoid, each con for forward and rearward travel of plunger ll, nection having a resistor in series therewith, the thus pulsing the line in a much shorter time than resistors being of di?ferent values. that required to obtain the same result in the 4. A telephone line pulsing device comprising a dial system. The operation of the present inven bar member having alternating conducting and tion is also much simpler in that the subscriber non-conducting portions, a solenoid arranged merely momentarily presses a push-button cor with its axis parallel with said bar member, a responding to the digit to be dialed instead of movable plunger axially positioned in said sole inserting his ?nger in a ?nger hole and rotating a dial member to a ?nger stop. noid, the outer end of said plunger carrying a roller element in. rolling contact with said bar The values of resistance of resistors R—| to R—9 will be graduated, the value for R—-l being member, a ?rst line conductor connected to said greater than for R-2, the value for R—2 being 40 conducting portions, a second line conductor con greater than for R~3, etc. The values of these nected to said roller element, a spring-biasing resistors may be calculated from the expression: said plunger to an outer position wherein the roller element engages a non-conducting portion =NI (1) of said bar member, a plurality of tapped con where M is the required magnetomotive force, N nections to said solenoid, each connection having is the number of included turns, and I is the a resistor in series therewith, the resistors being current required. The value of a resistor is then graduated in value and being of such values that given by when the energizing circuit for the solenoid in E cludes one of said tapped connections the plunger NM» ~12. (2) will be moved inwardly a predetermined distance, and a retarding inductor included in the ener where E is the applied voltage and R5 is the re gizing circuit for the solenoid. sistance of the included turns. While a speci?c embodiment of a telephone line pulsing device has been disclosed in the foregoing description, it will be understood that various modi?cations within the spirit of the invention may occur to those skilled in the art. There 5. The structure of claim 4. and wherein there are nine tapped connections, each tapped connec tion corresponding to a different predetermined distance of inward movement of said plunger. ALOYSIUS G. MILASUS.