US3145813A - Controls for transducer drive on a telephone dialer - Google Patents
Controls for transducer drive on a telephone dialer Download PDFInfo
- Publication number
- US3145813A US3145813A US248604A US24860462A US3145813A US 3145813 A US3145813 A US 3145813A US 248604 A US248604 A US 248604A US 24860462 A US24860462 A US 24860462A US 3145813 A US3145813 A US 3145813A
- Authority
- US
- United States
- Prior art keywords
- transducer
- clutch
- motor
- controls
- return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
- H04M1/276—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 using magnetic recording, e.g. on tape
Definitions
- This invention relates to automatic telephone dialers and particularly to the controls for initiating a dialing cycle in a dialer of the magnetic storage type.
- the dialer with which the controls of the present invention are used comprises a magnetizable medium in the form of a tape upon which telephone numbers are encoded. Reading the coded numbers and transforming them into impulses on a telephone circuit is accomplished by means including a transducer mounted to be driven across or scan the tape under the power of an electric motor.
- a further object of the invention is to provide means operable upon starting a cycle to disengage a clutch between the motor and transducer drive, to latch the clutch in disengaged position, and to effect release of the latch and reengagement of the clutch only upon arrival of the transducer at its home position.
- Another object of the invention is to provide a second means for energizing the motor without disengaging the clutch so that the transducer may be driven from an intermediate position where it has been interrupted for reasons hereinafter set forth in detail.
- FIG. 1 is a view in side elevation of a portion of the frame of an automatic telephone dialer showing the components of the present invention in place thereon;
- FIG. 2 is a plan view of the forward portion of the frame shown in FIG. 1 and particularly illustrating a latch mechanism
- FIG. 3 is a sectional view with parts removed taken on the line IIIIII of FIG. 1;
- FIG. 4 is a plan view with parts removed taken on the line IV-IV of FIG. 3.
- FIG. 1 of the drawings a base plate of an automatic telephone dialer is disclosed as supporting a motor 11 and reduction gear box 12 for driving a shaft 13.
- Fixed to the shaft is the driving part of a serrated face type clutch 14, the driven part of which 15 is on a hub 16 which also supports a chain sprocket 17 and a spring spool 18 upon which a spring 19 is wound.
- the chain is shown at 20 and as best illustrated in FIG. 3 is an endless chain trained over an idler sprocket 21.
- a transducer head shown at 22 is mounted on a carriage 23 which is supported for sliding movement with respect to bars 24 and 25.
- the transducer being fixed to the chain 20
- the transducer is caused to move from left to right as viewed in FIG. 3 to scan a tape (not shown) in FIG. 3 but a portion of which is illustrated at 27 in FIG. 4.
- the spring 19 is anchored as at 28 in FIG. 3 and since the spool 18 upon which it is wound is fixed on the same hub as the sprocket 17 advancing of the transducer to the right, as viewed in FIG.
- the machine also contains means, a disclosure of which is not necessary to an understanding of the present invention, to deenergize the motor 11 permitting the transducer to come to rest when it has scanned the entire telephone number on the tape and traveled a distance sufficient to indicate that the number has been completely decoded.
- the transducer stops in a position to the right of that shown in FIG. 3, which will be termed a rest position, where it remains until the initiation of another decoding cycle being held against return by engagement of the clutch 14-15. Consequently when a second dialing or decoding cycle is initiated, the transducer must be returned from its rest position to its home position from which it may again scan the tape in a rightward direction.
- Initiation of a dealing cycle is effected by depression of a key shown at 30 in FIG. 1 which is mounted on a lever 31 pivotally supported to a frame plate 32 at 33.
- the lever 31 is also pivotally connected to a slidable bar 34, one end of which has an upstanding clutch actuating finger 35 extending into the space between the driven part 15 of the clutch and the spool 18. Consequently depression of the starter key 30 slides the bar 34 toward the left and releases the clutch by sliding the driven part 15 to the disengaged position shown in FIG. 4, it being understood that this part as well as the hub 16, spool 18 and sprocket 17 are all slidably mounted on the shaft 13.
- a micro-switch in circuit therewith is shown at 37 in FIG.
- a depressible button 38 Momentary depression of the button 38 effects energization of the motor through a suitable relay circuit not shown.
- the button 38 is depressed by counterclockwise rotation of a ratchet wheel 39 and a pawl 40 pivoted to the control bar is advanced one tooth on the ratchet upon depression of the key 30 and movement of the bar 34 to the left so that upon return of the bar 34 under influence of a spring 43, the pawl will advance the ratchet wheel 39 one tooth in a counterclockwise direction effecting momentary depression of the button 38.
- a spring 44 urges the pawl upwardly into contact with the ratchet wheel.
- the control bar 34 is latched in its advanced position with the clutch disengaged by latch mechanism best shown in FIGS. 1 and 2.
- This latch mechanism comprises a lever 46 pivoted at 47 to a lug 48 on the frame 32.
- the latch is urged to swing in a clockwise direction by a spring 49 and has a pawl 58 which drops behind a pin 51 carried by a lug 52 on the control bar 34.
- latch lever 46 also has an end 54 disposed in a position to be engaged by the transducer carriage 23 when the transducer reaches its home position and this engagement swings the lever 46 in a counterclockwise direction releasing the latching connection of the pin 51 and the pawl 50 so that the control bar can be returned under influence of its spring 43.
- a second or auxiliary key 54 is provided and is carried on a lever 55 pivotally connected to the frame 32 by means of a pin 56.
- the lever 55 has a downwardly extending finger 57 engaging the end of the pawl 4-0.
- the control bar 34 also has a fiat upstanding portion 61 lying between the key lever 55 and the frame plate 32 to stabilize the control bar and this portion 61 is provided with a slot 62 which embraces the pivot pin 56 and permits forward movement of the control bar with respect thereto.
- controls for a transducer drive on a telephone dialer or the like which include a motor for driving the transducer, a clutch between the motor and transducer, a switch for energizing the motor and spring means to return the transducer from a rest position to a home position, key actuated means to disengage the clutch to permit return of the transducer by the spring means, a latch to retain the clutch in disengaged position, and means actuated by movement of the transducer to home position to disengage said latch.
- a transducer drive in a telephone dialer or the like including a motor, a clutch and a spring to return the transducer from a rest to a home position when the clutch is disengaged, a key, a slidable control bar advanceable by depression of the key, means to disengage the clutch upon advance of the bar, a spring to return the bar and engage the clutch, a latch to retain the bar in its advanced position, and means actuated by return of the transducer to home position to release said latch and permit engagement of the clutch only after return of the transducer.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL292171D NL292171A (fr) | 1962-12-31 | ||
US248604A US3145813A (en) | 1962-12-31 | 1962-12-31 | Controls for transducer drive on a telephone dialer |
GB8477/63A GB1032436A (en) | 1962-12-31 | 1963-03-04 | Controls for transducer drive on a telephone dialer |
DEP32872A DE1265217B (de) | 1962-12-31 | 1963-10-29 | Steuereinrichtung fuer den Antrieb eines in einem automatischen Stromstossgeber angeordneten Abtastkopfes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US248604A US3145813A (en) | 1962-12-31 | 1962-12-31 | Controls for transducer drive on a telephone dialer |
Publications (1)
Publication Number | Publication Date |
---|---|
US3145813A true US3145813A (en) | 1964-08-25 |
Family
ID=22939833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US248604A Expired - Lifetime US3145813A (en) | 1962-12-31 | 1962-12-31 | Controls for transducer drive on a telephone dialer |
Country Status (4)
Country | Link |
---|---|
US (1) | US3145813A (fr) |
DE (1) | DE1265217B (fr) |
GB (1) | GB1032436A (fr) |
NL (1) | NL292171A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR0009458A (pt) | 1999-04-01 | 2002-01-08 | Imerys Pigments Inc | Produto de pigmento para uma composição de revestimento de papel, processos para fabricar um produto de pigmento para uma composição de revestimento de papel, e para produzir um produto de pigmento, composição de revestimento para o uso na produção de revestimentos de brilho sobre papel e outros substratos, e, processo para revestir uma folha de papel e calandrar o papel para formar nele um revestimento de brilho |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2500956A (en) * | 1945-04-16 | 1950-03-21 | Westinghouse Electric Corp | Time-delay relay |
DE1116740B (de) * | 1958-12-23 | 1961-11-09 | Imre Szasz Dipl Ing | Selbsttaetiger Nummernwahlimpulsgeber fuer Teilnehmerstellen in Fernmelde-, insbesondere Fernsprechanlagen |
-
0
- NL NL292171D patent/NL292171A/xx unknown
-
1962
- 1962-12-31 US US248604A patent/US3145813A/en not_active Expired - Lifetime
-
1963
- 1963-03-04 GB GB8477/63A patent/GB1032436A/en not_active Expired
- 1963-10-29 DE DEP32872A patent/DE1265217B/de active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2500956A (en) * | 1945-04-16 | 1950-03-21 | Westinghouse Electric Corp | Time-delay relay |
DE1116740B (de) * | 1958-12-23 | 1961-11-09 | Imre Szasz Dipl Ing | Selbsttaetiger Nummernwahlimpulsgeber fuer Teilnehmerstellen in Fernmelde-, insbesondere Fernsprechanlagen |
Also Published As
Publication number | Publication date |
---|---|
DE1265217B (de) | 1968-04-04 |
GB1032436A (en) | 1966-06-08 |
NL292171A (fr) |
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