US1483353A - Tape recorder - Google Patents

Description

Feb. 12 1924.

E. E. KLEINSCHMIDT TAPE RECORDER Filed June 21, 1920 3 Sheets-Sheet 1 INVE1VTOR,

Feb. 12 1924.

E. E. KLEIN SCHMIDT TAPE RECORDER Filed June 21, 1920 3 Sheets-Sheet 2 IXVEIVTOR.

Feb. 12 1924. 1,483,353

E. E. KLEINSCHMIDT TAPE RECORDER Filed June 21, 1920 5 Sheets-Sheet 5 WI YWESS: I INVEN TOR.

I I flaw A TTORNEYS Patented Feb. 12, 1924.

UNITED STATES I 1,483,353 PATENT OFFICE.

EDWARD E. KLIHNSOHMIDT, OF BROOKLYN, NEW YORK, ASSIGNOR TO KLEINSCHMIDT ELECTRIC COMPANY, INC., A CORPORATION OF NEW YORK.

TAPE RECORDER.

Application filed June 21, 1920. Serial No. 390,800.

To all whom it may concern:

Be it known that EDWARD E. KLEIN- SCHMIDT, a citizen of the United. States, residing in Brooklyn, in the county of Kings and State of New York, has invented certain new and useful Improvements in Tape Recorders of which the following is a specification.

This invention relates to improvements in tape recorders of the type employed in firealarm stations, district messenger oflices, etc.,

for producing a permanent record of signals received, by punching or otherwise marking a paper tape.

One of the objects of this invention is the provision of a pluralit of recorders disposed side by side, and individually removable from the supports on which they are mounted, and. a common operating member for the various recorders so positioned and connected to the various recorders that individual recorders may be removed for repair or other'purpose without disturbing the operation of the common operating member or of the remainin recorders.

Another object o the invention is the provision of novel means for feeding the tape forward, and which does not injure the tape, though a part of the means is continually rotating.

Still another object of the invention is the provision of a single operating means for the punch recorder and the tape feedin -means.

n the accompanying drawings in which is illustrated one embodiment of the invention, Fig. 1 is a front elevation showing a number of tape recorders arranged side by side.

Fig. 2 is a side elevation, partially in section, of the motors and shaft actuated thereby for operating the recorders.

Fig. 3 is a vertical section taken through Figs. 1 and 2, and illustrating the connection between the motor-operated shaft and the recording, mechanism.

Fig. 4 is a vertical section through one of the recorders.

Fig. 5 is a front elevation thereof, and.

ings at 9 in a casing 9. The inner ends of the shafts 7 and 7 are coupled to shaft 9 having its bearings at 9 within the casing. On this shaft is secured a gear 10, while suitable pawl and ratchet mechanism are inter posed between the inner ends of shafts 7, 7 and shaft 9*, respectively, so that shaft 9 may be operated by either of shafts 7 or 7.

Referring particularly to Fig. 6, motor 6 receives current from a suitable generator 12 over conductors 13 and 1-4, the connections being such that this motor is normally connected in circuit, while reserve motor 6 receives its current from reserve generator 24, here shown as a battery in a. manner more fully hereinafter explained. A magnet 15 is included in the circuit of motor 6, and when armature 16 is attracted, contact member 17 bridges contacts 18 and 19 in the circuit of motor 6. Now in case the motor or any part of the circuit thereof is disabled, magnet 15 is de-energized, contact member 17 drops against contacts 20 and 21 and closes a circuit to motor 6 which is connected by conductors 22 and 23 to the battery or other suitable source of electric energy 24, so that there is always a motor available'for operating the recording mechanism. A signal, such as a bell 25, is preferably connected across motor 6 and in the circuit of battery 24 to indicate when motor 6 is n operating.

Gear 10 secured to shaft 9 is engaged by gear 26 (see Fig. 3) secured on the lower end of an upwardly extending shaft 27, having its hearing at 28 in casing 9 and held 111 position by collar 29 immediately above the casing secured to the shaft by setscrew 30. The upper end of shaft 27 has its bearing in bracket 31 secured? by bolts 32, or otherwise, to frame 36. A worm wheel 33 secured on the upper end of shaft 27 engages a worm wheel 34 secured on shaft 35 having its bearings (not shown) in stationary parts.

anel frames 37 are formed below and above with flanges 38 and 39 which engage stationary members 36, and are secured thereto by screws or bolts 39. Tape 40 on which the record is made, is fed to the recorder from reel 41, having its bearings at 42 in bracket arm 43. The tape is led to the recording mechanism by a guide plate 44 held on bracket 45 which is secured to, or integral with the anel frame, a suitable wedge-shaped mem r 46 preferably being (ill interposed between plates 44 and 45 to give to plate 44 the proper angle, the parts being secured together by screws 47. The plate at the front of the panel is curved downwardly, as indicated, and extends to a position behind die plate 48 and immediately in front of die plate 49, the latter being of smaller dimensions than plate 48, so that the tape which passes in front of guide plate 44 is directed between die plates 48 and 49.

In the embodiment of the invention here illustrated, a record is made by punching the tape. For this purpose punch 50 passes through the registering openings in the die plates 48, 49 and is normally pressed away from the tape by coil spring 51 engaging at one end die plate 49, and at its other end a collar 52 secured on punch 50. The inner end of the punch is guided by stationary plate or bracket 53.

The feeding mechanism for tape-4O cornprises gear 54 secured on shaft 35 and in mesh with gear secured on shaft 56 having its hearings in the frame of the panel, there being one gear 55 and shaft 56 for each recording mechanism. A feed wheel 57, milled on its periphery, is also secured on shaft 56 is continuously rotated, and engages tape 40 on its outer face. The tape is fed forwardly by segment 58 also milled on its outer face, and which is pivoted at 59 on bracket 60 secured on armature 61 of electromagnet 62. The armature pivoted at 63, is in the form of a bell-crank provided with a downward extension 64 on which is secured an adjustable screw 65, the head of which engages the inner end of punch 50. Guide plate 44 is provided with an opening 66 between feed wheel 57 and segment 58 to permit the segment to engage the tape. A coil spring 67 is connected to segment 58, as shown in Fig. 4, and tends to move the segment to the upper position. shown in Fig. 4, against stop 68. When magnet 62 is deenergized, spring 51 surrounding punch 50 forces armature 61 away from the magnet and moves pivot of segment 58 to the left, as viewed in Fig. 4. and brings segment 58 into engagement with the tape opposite feed wheel 57, and as the latter is continuously rotated, as above stated, tape 40 and segment 58 are moved downwardly. When segment 58 reaches its lowermost position, a cam wedge 69, which is secured on the side of segment 58, and preferably extends beyond the outer face of segment 58, engages a smooth wheel 70 on shaft 56 and forces segment 58 away from tape 40 to stop the feed. and as the segment is now entirely out of engagement with the tape, the latter is not injured by the continued rotation of feed wheel 57. I

The conductors for magnet 62 are indi cated at 71 and 72, are connected to binding posts 73 and 74, respectively, and extend one or more points where circuit closers are provided, and from which signals are to be sent to the recording mechanism in any well-- known manner. A removable receptacle 75 is preferably provided in front of die plates 48, 49 for receiving the tape punchings.

The operation of the recorders will readily be understood from the foregoing description, and is as follows In normal condition, magnet 62 is de-energized, segment 58 is in downward position with wedge 69 engaging wheel 70, and tape 40 presents an unperforated surface before punch 50. When the first impulse of any signal or combination of impulses comes in, magnet 62 will be energized, causing the head of screw 65 to force plunger 50 through the tape. At the same time, pivot 59 of segment 58 will be thrown to the right in Fig. 4, disengaging wedge 69 from rotating wheel 70. Segment 58 Wlll then rotate about pivot 59 under lnfluence of its spring to its upperposition as shown in Fig. 4. At the end i of the first impulse, magnet 62 will be deenergized, first permitting punch 50 to be withdrawn from the tape by the action of spring 51, and thereafter permits segments 58 to force tape 40 against rotating feed wheel 57. As soon as this occurs tape 40 will be advanced, and at the same time segment 58 will be rotated downwardly about pivot 59. Thereafter as long as impulses are received in the particular series, when magnet 62 is energized. segment 58 will first be withdrawn from engagement with the tape causing the tape to stop, the

punch will then be forced through the tape,-

segment 5.8 will be returned to its upper position, and as magnet 62 is de-energized, the punch will be withdrawn from the tape and segment 58 will reengage the tape and force it against wheel 57 again causing the tape to feed. until the last impulse of a series has been received. when magnet 62 will remain deenergized. segment 58 will be rotated downwardly about. its pivot until wedge 69 engages wheel YO, disengaging the segment; from the tape and stopping the feed of the tape. The mechanism will then be in normal position-and ready for reception of next signal combination. Inasmuch as the reception of an impulse stops the tape feed at any point in the rotation of segment 58, it will be clear that the relative spacing of the perforations in a series may be varied within certain limits, but the spacing be tween series of perforations will remain substantially uniform, and will be greater than the spacing between the perforations in the series or combination.

It will. be apparent that the recording mechanism on any panel may be removed by ply idrawing the panel fri n device, and as the operating This latter action continues I shaft 35 is located to the rear thereof, that flOlIl; the tape when sai such withdrawal of an individual recording set will not interfere with the operation of the remaining units.

It will also be apparent that the record is produced by the same magnet which withdraws the feeding segment from the tape, and that the tape will always be punched at a time when its movement has ceased.

Vhat is claimed as new,is:

1. In a tape recorder, a feed wheel for the tape, a movable segment engaging the tape on its opposite side from the feed wheel, and means for moving said segment away from the tape operable when said segment reaches its forward limit of movement.

2. In a tape recorder, a rotatable feed wheel for the tape, a pivoted segment disposed on the opposite side of the tape from said feed wheel, means for bringin .said segment into and out of engagement with the tape opposite said feed wheel, and additional means for moving saidsegment away from the tape when said segment reaches its forward limit of movement.

3. In a tape recorder, a rotatable feed wheel for the tape, a pivoted segment disposed on the opposite side of the tape from said feed wheel, means for bringing said segment into and out of engagement with the tape opposite said feed wheel, and additional means comprising a cam secured to said segment for disenga ing said segment segment reaches its forward limit of movement.

4. In a tape recorder, a rotatable feed wheel for the tape, a pivoted segment disposed on the opposite side of the tape from said feed wheel, means for bringing said segment into and out of engagement with the tape opposite said feed wheel, a wheel mounted on the shaft of said feed wheel out of register with the tape and a cam movable with said segment and adapted to eng: c said wheel whereby said segment is forced away from the tape when it reaches its forward limit of movement.

5. In a tape recorder, a movable recording member, mechanism comprising a rotatable feed wheel and a pivoted segment for feeding the tape forwardly, and a single elec-.

tromagnetio device for operating said recording member and for withdrawing said segment from engagement with the tape.

6. In a tape recorder, a movable recording member, mechanism comprising a rotatable feed wheel and a pivoted segment for feeding the tape forwardly, an electromagnet and its armature, and associated means for operating said recording mechanism and for withdrawing said segment from engagement with the tape by the movement of said armature.

7. In a tape recorder, a movable recording member, mechanism comprising a rotatable feed wheel and a pivoted segment for feeding the tape forwardly, an electromagnet, a pivoted armature therefor provided with two arms, and associated means for actuating the recording mechanism by one arm .of said armature and for withdrawing said segment from engagement with the paper by the other arm of said armature.

8. A plurality of tape recorders having front p ates aligned side by side, a feed wheel for each recorder in front of its front plate, a rotatable shaft common to all recorders in the rear of saidfront plates, and means for actuating said feed wheels from said shaft.

9. A plurality of tape recorders having front plates aligned side by side, a feed wheel for each recorder in front of its front plate, a rotatable shaft common to all recorders in the rear of said front plates, means for actuating said feed wheels from saidshaft, and an oscillatable segement for each recorder to cooperate with its feed wheel in feeding the recorder tape.

10. In combination, a rotatable feed wheel for the tape of a tape recorder, an oscillatable segment for said tape, means for bringing said segment into engagement with said tape, and additional means for moving said segment away from said ta e.

EDWARD E. KLEINSCIIMIDT.

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