US2032229A - Telephone call apparatus - Google Patents

Telephone call apparatus Download PDF

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Publication number
US2032229A
US2032229A US718986A US71898634A US2032229A US 2032229 A US2032229 A US 2032229A US 718986 A US718986 A US 718986A US 71898634 A US71898634 A US 71898634A US 2032229 A US2032229 A US 2032229A
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Prior art keywords
slide
bars
pawl
shaft
call
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Expired - Lifetime
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US718986A
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English (en)
Inventor
Servanton Jacques
Consael Jean Marie
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Individual
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Individual
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
    • H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc

Definitions

  • the present invention relates to call apparatus for automatic telephone systems, of the type in which the successive openings vand closings of an electric contact send, into-the telephone line, several sets of impulses separated by intervals of rest, each set of impulses corresponding to a figure or a letter forming part of the call.
  • the successive openings and closings of the electric contact vare obtained by means of a pawl cooperatingwith bars whose position is adjustable, these bars being vequal in number to the characters of the call indication; each bar comprises several sections which are toothed in a different manner', and the wholeset of bars is movable transversely with reference to the said pawl.
  • 'I'he invention has for its object a call apparatus for automatic telephone systems, which is chiefly characterized by the fact that itcom- 20 prises a pawl-carrying slide adapted for displacement opposite sets of bars which are adjustable in position and comprise elements or sections whose outline depends upon the character represented by each of said elements; the pawl or pawls carried by the said slide cooperate successively with such elements in order to effect the successive openings and closings of an elec- .tric contact.
  • the apparatus com- 30 prises two independent sets of bars which permit composing two call indications, a pawl mounted on the pawl-carrying slide being employed for each of these two sets.
  • Fig. 1 is a perspective view of an apparatus constructed in conformity to the invention.
  • Fig. 2 is a section, on the line 2-2 of Fig. 4, of the internal mechanism of the apparatus.'4
  • Fig. 3 is a plan view of this mechanism.
  • Fig. 4 is a view of one end of the apparatus, with partial removal of a. side-plate.
  • Fig. 5 is a view of the other end of the apparatus.
  • Fig. 6 represents the arrangement of the elecrance November 24, 1933 device for adjusting the rack of the pawl-carrying slide.
  • Fig. 11 is a view, similar to Fig. 8, of a modification.
  • Iig. 12 is a view in side elevation, of a device 5 for holding the elements ofthe call indication in the desired position during the movements oi.' the pawl-carrying slide.
  • Fig. 13 is a perspective view, on a very large scale, of a pawl pertaining to the slide, with a device for guiding the said pawl.
  • Fig. 14 is a. view, in side elevation of a modification of the apparatus represented in Figs. 2 to 5.
  • Fig. 15 is a view, similar to Fig. 14 of another l5 modification.
  • Fig. 16 represents, in perspective, another example of execution of the call apparatus according to the invention.
  • the apparatus comprises bars I, equal in number to the characters of the call indication (seven in the example represented), which are parallel with one another and are mounted in such manner that they may be moved lengthwise.
  • each of the bars I is slidable on a guide 2 secured at each end to two respective plates 3 which are mounted on the cross-pieces 4 of two side-plates 5 and 6 carrying the whole of the mechanism.
  • Each of the bars I is provided, on its lower face, with elements or sections 1, each representing a different character which is indicated on the upper face of the bar. According to the position of thislatter, the character corresponding to this position Will appear in an opening 8 formed in the upper wall of a case 9 containing the whole apparatus.
  • the elements 'I have a smooth surface, the length of which varies 40 according to the characters which they represent (this length being counted transversely with reference to the bar).
  • a lever III is secured to each bar I in order to slide this latter and to bring a chosen element 'l upon a given transverse line 45 X-X.
  • the said levers traverse the upper wall of the case 8 through a slot II formed in said wall.
  • the characters corresponding to each position of the bar I and lever III for which a given element 'I is located on the line X--X are in- 50 scribed upon the upper wall of the case 8 along the slot II.
  • a suitable device serves to hold the bar I exactly in the position in which one of its elements 'I is located on the line X-X.
  • Theaforesaid arrangement or the bars I thus permits to bring upon the transverse line X-X the element 1l of each bar which corresponds to a givencharacter in the call indieation, and hence this indication may be composed once for all; ⁇
  • the call signal can be sent into the telephone line as many times as may be necessary, by using an automatic mechanism (to be further described) which may be caused to traverse all said bars along the line X--X, as many times as niay be desired, to induce signal impulses.
  • the apparatus is further provided with a second device comprising elements 1 which form cali indications and may be traversed by a suitable mechanism in order to send into the telephone line the corresponding call signals.
  • This second'device comprises a drum I5 whose axis is parallel with the contact line X-X, and. which carries at the periphery longitudinal bars I6, each of which represents a. determined. call indication.
  • On the outer edge of each bar I6 are formed elements 1, whose number corresponds to that of the characters of the call indication represented by the corresponding bar, the length of each element Y being the one which corresponds to of the sign which it represents.
  • the aforesaid reading device may be replaced by any equivalent device, and for instance by a drumset in rotation by the shaft I9 and mounted under an opening in the case 9, the subscribers' names or the call indi-cations bej ing inscribed uponthe surface of said drum.
  • a single mechanism is employed foi-'traversing the bars I or one of the bars I6 of the drum I5,
  • This device essentially consists of a contact slide 21 moving in either direction along the line X--X.
  • the slide 21 may be This table carries the aosaeao mounted on a shaft 2,8 by any suitable means in -order that the rotation of ⁇ this shaft cause the displacement of the slide.
  • the shaft 42l! may be threaded, and the slide 21 screwed t'o tained in bored recess-asin the slide 21.
  • the said slide is 4further slidable on a guide bar 3l, parallel to the shaft 28.
  • a governor 31, of any suitable type, is cennected with the shaft 28 of the slide by means of gearing 38 and a ratchet wheel 39 cooperating with apawl 40 mounted on a disc 4I adapted to rotate together with the shaft 28.
  • This connection is carried out in such way thatJ the shaft 28 willonly rotate the governor 31 during the operative stroke of the slide 21.
  • the slide 21 will move at a' determined uniform speed in order that the sending of the impulses of current into the telephone line will Abe effected at the proper rate; on the contrary, the inoperative stroke of the slide may be effected very rapidly by turning the crank 34.
  • the slide v21 carries the contact-pieces and other devices for the opening and closing of the electric circuit in order to send current impulses into the telephone line.
  • These devices comprise (Figs. 6 to 8), a cam 42, preferably of insulating material, keyed to an axle 43 situated on the slide 21.
  • a pinion 44 forming part of a set of reduction gearing' 45 cooperating with a rack 46, parallel to the shaft 28.
  • A'spring 49 subject to ⁇ compression, is in contact at one end with thisend-plate and at the other end with the projection 41.
  • the slide 21 further carries two pairs of elastic contact members --IL 5I, which are acted upon by the cam 42 during its rotation. One of these pairs of contact members cooperates with the bars I., and the other with the bars I6 of the drum I5.
  • Each pair of contact members consists of two spring strips 50 and 5I which are suitably insulated and are secured at one end to the slide 21. These twcstrips are provided with hooks 52, or with other suitable parts, for attaching the electric wires making the connection.
  • 'Ihe strip 5I with the said strip 50 and thus, due to the elas- ⁇ 'way as to oscillate in a vertical plane passing by a rotation on its pivoting axis 55, thus avoidvthrough the line X--X.
  • 'I'he said pawl carries a lateral arm or journal 56, of insulating material, which'bears against the strip 5
  • the pointed end of the pawl 54 which makes contact with the elements 1 of the bars I (or of the drum I5 in the case of a lower pawl), is rounded on one side according to ab in such 'manner that during the movement of the slide 21 in the direction of the arrow F (inoperative stroke) the strip 50 will remain separated from the cam 42, even-during the movement of the pawl against the elements 1.
  • the outer end of the pawl is beveled at c and d on both of its lateral faces and thus any improper operation of the bars I or of the drum I5, when the pawl 54 is adjacent one of these bars, or adjacent the. drum I5, will lower the said pawl ing all damageto the parts in contact.
  • the apparatus is provided with areversing device 51 (Figs. 1 and 6) which is mounted in the electric circuit for inserting in the circuit, at will, either of the two pairs of 'contact-pieces 5th-5I.
  • This reversing device may be replaced by any other equivalent device, for instance an arrangement of two plug contacts.
  • the apparatus is 'further provided with a device of the usual kind for short-circuiting the listoning devices which areconnected at 55.
  • This device comprises-contactpieces mounted on con y ducting spring strips 59 which are suitably insulated.
  • One of these strips 59 carries a stud ,55, in contact with a lever 6I upon which the sector -33 is caused to bear, against the action of a spring 64,' when the hand-crank 34 is in the idle position (Fig. 4).
  • av disappearing stop 52 (Fig. 1) is employed in order to limit the movement oct' the slide 21 in the case in which it is simply necessary to traversethe rst bars VI on the right-hand side.
  • the said stop 62 is connected with a controlling key 63 extending above the upper part of the case 9.
  • the chosen telephone call indication is composed by moving the bars I so that the lever I of each bar will be brought before the corresponding character, which also appears inthe opening 8, the reversing device'51 is placed in the position corresponding to the placing of the bars I in service.
  • 'I'he call number or indication' being thus composed, the operator presses upon the crank 34 in order to turn it in the direction of the arrow f2 (Fig. 4) and this has the effect of displacing the slide 21 from right to vleft (arrowF, as shown in Figure '1, iand in Figs. 2 and 3).
  • the upper pawl 54 makes contact successively with the elements 1 ofthe bars I situated along the line X-X.
  • the journal 55 makes contact with the spring strip 5I, thus permitting the two strips 5l and 5I to come near the cam 42.
  • the device consisting of the pawl 54 and the said strips remains4 in this position as long as the pawl is in contact with the element 1.
  • the cam 42 which is caused to rotate, during the ldisplacement of the slide 21, by the rack and the gearing 44-45, will thus periodically raise the strip 5l, thus causing openings and closings of the contact at -5I.
  • the number of openings and closings thus effected, and hence the number of impulses sent into the telephone line, will be evidently proportional to the length of the element 1 against which the pawl 54 is caused to bear.
  • the call apparatus above described may comprise various accessory arrangements.
  • this will Vpermit to compose the call indication and to eifectrthe idle stroke or inoperative stroke of the slide 21, but preventing the return stroke of the said slide, and conse' quently the sending of the call indication, before the listening devices have been removed from their hooks.
  • the disc 39 (Fig. .2), which rotates together with the driving shaft of the slide 21, comprises at its periphery a set-of teeth adapted to be engaged by the end of a lever 66 connected with the hook or like support (not shown) of the listening devices.
  • a spring (notv shown) tends to separate the lever 66 from the teeth,65.
  • Fig. 11 is represented a modification of the arrangement for moving the -slide 21.
  • the slide vhas a longitudinal slot 61 in which is engaged the-end of a screw 68, screwed into a collar 99 vsecured to a bevel gear wheel 19.
  • This wheel 19 engages a second gear wheel 1I keyed to a shaft 12 which is mounted on the slide and to which is also keyed one of the wheels of the set of gearing 45.
  • a device may be provided for automatically assuring the locking of the bars ,I and of the drum I5 when the contact slide 21 is displaced in either direction, and for releasing lthe said bars and drum when the slide has 4assumed the idle position.
  • Such a device is shown in Fig. 12.
  • This device comprises two levers 13 and 14, pivoted at 15 and 16; their free ends, forming hooks, are adapted for engagement between two bars I9 of the drum I5, for the lever 14, and between two elements -1 of the .bars I, for the lever v13.
  • This last-mentioned lever has a sufiicient length, measured on its pivot axis, in order to vhold at the same time all of the'bars I.
  • the levers 13 and 14 are connected by links 11 and a rod 18 with a lever 5I actuated by the sector 33. It will ⁇ thus be readily understood .that when the slide 21 is in the idle position (-the sector 33 then having the position represented in Fig. 12) the bars I and the drum I5 are released. When the o'perator acts upon the operating lever 34 in order to displace the slide 21, the sector 39 becomes separated from the lever 9
  • this support consists of 15 a plate upon which the bars I8 are maintained by any 'suitable means.
  • This plate 89 has upon its lower face a transverse rack 9
  • the drum I5 may alsobe replaced by a sec- 20 ond set of bars 83 (Fig. 1,5) constructed in a manner analogous to the first-mentioned set of bars I, and also permitting to compose a call indication.
  • Each of the bars 83 is also provided with an operating lever 84.
  • the use of two sets 25 of bars isy particularly advantageous, asit pro-v vides for the preliminary composing of two call indications, and forthe transmission, at will, of one or the other of these indications, without requiring -to perform any other accessory opera- 30 tion 85 which will bear against the upperface 35 of a fixed guiding bar 86 parallel to the shaft '
  • This slide is also vprovided with a second projection 81 which will be'ar against the lower face of the guide bar 89 -when ⁇ l the slide turns upon the shaft
  • a pawl 89 On the slide
  • ySaid Aroller rests upon a 45 strip 92, parallel to the shaft
  • the strip 92- rests upon a. stud 94 mounted on the A.end ⁇ of a spring strip 95 which is pivoted at the other end to a iixed axle 99.
  • 'I'he 50 strip 95 carries a contact-piece 91 cooperating with al like piece 98 mounted on a secondspring strip 99 which is secured at its other end vat
  • equal in number to the characters of the call indications, are slidable on guides
  • the number of teeth of each element or section depends upon the character which it represents. 80
  • 98 is connected, in the same manner' as in the example shown in Figs. 2 and 3, with a lever
  • 95 assures thereturn of lthe parts to the idle position.
  • 08 turns in the direction of the arrow f4 'and thus rotates the said slide until the projection 81 makes contact with the lower face of the guide bar 86.
  • 08 turns in the contrary direction to the arrow f.' and it thus pivots the slide
  • 00 causes the slide
  • the pawl 89 descends, and the roller 9
  • two seriesof call mechanisms one-series having signals composed at the moment of use, the other having call signals prepared in ⁇ advance, all of the signals being composedalong parallel lines, a single slide mounted for reciprocal movement parallel to the signals and carrying two pawls, one Apavvl acting on the signals prepared in 4advance and the other pawl acting on the signals composed at the moment of use, means for causing unrestricted movement of the slide in one direction and automatic means for causing controlled movement of the slide at constant speed in the opposite vdirection and means for selectivelyenergizing the call mechanisms.
  • pair ofpawls also carried by the slide for coacting with the contact breakers and respectively with the pawl actuating signal elements on the bars A and on the strips.
  • a slide mounted on the shaft for longitudinal reciprocation between the sets of bars and the drum, a pair of contact breakers carried by the slide, a pair of pawls carried by the slide for coacting with the contact breakers and, respectively, with the pawl actuating signal elements on the bars and on the strips.
  • a frame a shaft journaled in the frame, a set of bars equidistant from the shaft, spaced longitudinally of the shaft and mounted for longitudinal reciprocation in a direction transverse to the axis of the shaft, a series of pawl actuating signal elements carried by each bar, a drum journaled in the frame with its axis parallel to the axis of the shaft, a series of elongated circumferentially spaced strips on the surface of the drum and each formed with different predetermined pawl actuating signal elements, aslide mounted on the shaft for longitudinal reciprocation between the sets of bars and the drum.
  • a pair of contact 1breakers carried by the slide a pair of pawls carried by the slide for coacting with the contact breakers and, respectively, with the pawl actuating signal elements on the bars and on the strips and means for selectively energizing the contact breakers.
  • two series of call'mechanisms one series composed of a plurality of relatively movable bars having spaced i pawl actuating signal elements whose outline depends upon the character represented by each element, which elements may be arranged in a predetermined line in different sequences by relative movement of the bars; the other series composed of strips each having a predetermined different series of pawl actuating signal elements constituting a complete signal, said strips being selecstrips.
  • each element depends upon the character-represented byY each element, which elements Vmay be jrrangedin a predetermined line in different sequences by relative movement of the barsthe other series composed of strips each having a predetermined different series of pawl actuating signal elements constituting a complete signal, said strips being selectivelyl-movabie into spaced alignment with the predeterminedY line of elements on the bars;
  • an automatic signal apparatus eirset of transversely movable longitudinally spaced bars, pawl actuating signal elements carried by the bars, a drum rotatably mountedrin longitudinal alignment with the set of bars, al: series of elongated circumierentially spaced strips carried on the surface of the drum and each formed-with different predetermined pawl actuating signal elements, a slide mountedfior longitudinal reciprocation between the bersand the drum and carrying V*a pair of paw'is, a cam mounted for revoluble movement between the pawls and a pair of contact breakers adapted to be moved by the pawls into coacting engagement with the cam upon engagement of the pawls with the signal elevments.
  • nal elements a slide mountede'for longitudinal reciprocation between the bars and thefdim and jcarrylng a pair" ci pawls, a cam mounted for revolube movement between the pawls and a' pair Qof contact breal-:ers adapted to be moved by the jpawls: into coacting v,engagement with the cam upon engagement of the pawls with the" signal ele-f ments and means for selectively energizing the contact breakers.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US718986A 1933-11-24 1934-04-04 Telephone call apparatus Expired - Lifetime US2032229A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR432334X 1933-11-24

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US2032229A true US2032229A (en) 1936-02-25

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US718986A Expired - Lifetime US2032229A (en) 1933-11-24 1934-04-04 Telephone call apparatus

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US (1) US2032229A (enrdf_load_stackoverflow)
BE (1) BE406343A (enrdf_load_stackoverflow)
FR (1) FR777975A (enrdf_load_stackoverflow)
GB (1) GB432334A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434959A (en) * 1945-09-15 1948-01-27 Bell Telephone Labor Inc Call transmitter for interstate telephone communication
US3060276A (en) * 1959-07-24 1962-10-23 Automatic Elect Lab Automatic pulse generator for a telephone system
US3073910A (en) * 1959-01-19 1963-01-15 James J Cunningham Automatic dialing attachment for telephones
US3095481A (en) * 1958-06-10 1963-06-25 Ries Hermann Dialing arrangement for telephone apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1000871B (de) * 1954-11-17 1957-01-17 Gylling & Co Ab Teilnehmertafel fuer Privattelefonanlagen, bei der den Teilnehmern zweistellige Zahlen oder aehnliche Symbole zugeteilt sind

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434959A (en) * 1945-09-15 1948-01-27 Bell Telephone Labor Inc Call transmitter for interstate telephone communication
US3095481A (en) * 1958-06-10 1963-06-25 Ries Hermann Dialing arrangement for telephone apparatus
US3073910A (en) * 1959-01-19 1963-01-15 James J Cunningham Automatic dialing attachment for telephones
US3060276A (en) * 1959-07-24 1962-10-23 Automatic Elect Lab Automatic pulse generator for a telephone system

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Publication number Publication date
GB432334A (en) 1935-07-24
BE406343A (enrdf_load_stackoverflow)
FR777975A (enrdf_load_stackoverflow) 1935-03-04

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