US2045539A

US2045539A - Tape drawing device

Info

Publication number: US2045539A
Authority: US
Publication date: 1936-06-23
Anticipated expiration: 1953-06-23

Description

June 23, 1936. A D, E EN 2,045,539

TAPE DRAWING DEVICE Filed May 28, 1935 2 Sheets-Sheet l 4 FROJfCfO P TIC/(1? j JCREEN d3 I J 46 :zii 1 INVENTOR Z4 fluausrfl f rzf/v ATTORNEY June 23, 1936.

A. D. EITZEN TAPE DRAWING DEVICE Filed May 28, 1935 2 Sheets-Sheet 2 Mme/e012 T41 5 PUL LEE INVENTOR ZEA/ BY 2 I ATTORNEY p55 wThe fingel" tenths seems Patented June 23, 1936 umr zo STATES PATENT OFFICE signor to News Projection Corporation,

New

York, N. Y., a corporation of New York Application May 28, 1935, Serial No. 23,819

1: Claim. (Cl. 271-23) Among the objects of the present invention, it

is aimed to provide an improved tape drawing device for a telegraphic printer especially when associated with a support usable as an inspection area for a projector or a scanning area for a scanning device of a television apparatus or the like.

It is another object of the present invention to provide an improved tape drawing device for a telegraphic printer having a tape puller and a continuously operating electric motor operag tively associated normally to rotate said tape puller and yet responsive to the increased tension in the tape resulting when the tape puller continues to operate after the printer comes to rest in turn to actuate a restraining member toiock the tape puller against further movement.

These and other features, capabilities and advantages of the invention will appear from the subjoined detail description of specific embodiments thereof illustrated in the accompanying 30 drawings in which Figure 1 is a diagrammatic view of the several essential parts constituting the present invention showing the ticker and projector in front elevation and the tape puller in plan; 4

Fig. 2 is a diagrammatic view showing the several parts of the invention with thetape puller as well as the tickerand fi'ojector in side elevation and as a result the path followed by the tape from the projector tovthe tape puller.

, Fig. 3 is a front elevation oi the controller I the tape puller separated from the, motor ,and

i driving. connection; and w Fig. Us a front elevation of an showing another embodiment of the presentinvention. n w

A oiwhichbrakeband is, connected to the upward 45 45 Inthe embodiment shown in Figs 1,2, and 3, :the tape i passes from the ticker 2 under, the

finger 3 and then over the idler -tat theentrance A end of thesupportconstitutlng ,theiight aperture:

iofthe projector t andthen across the icilq :6 at

0 the discharge end of; the support and iromthere I H v 9r 1 down to the tapepullihg roller 1 rotatabiymounton v sticker comes to; rest and the continued movement red on-thesheft: tjoucmaled in thecasing th h rom thenroller fl, the :tape-i/then passes onto asuitahie ,l I v A cartridge to tumors the mercury'fiuiol toiinte rupt the electrical connection between- .theter- 55 hrewind reel; $53.2 3;; 1

nected to the upper end of the link ll pivotally connected at its lower end to the bracket l2 pivotally connected at l3 to the support I30.

On the bracket i2, there is mounted the cartridge l4 constitutingthe container for a supply 5 of fluid mercury constituting in turn the conductor or electrical connection between the terminals l5 and it of the mercury switch formed thereby when the cartridge M is substantially horizontal as shown. c,

The terminal ii in the present instance is connected by the conductor I! to the outlet plug l8 connected to a suitable source of electric current, which plug it is in turn connected by the conductor it to one terminal of the winding of the elec- 5 tromagnet 20, the other terminal of which winding in turn is connected by the conductor M to the other terminal it of the mercury switch.

Reciprocably mounted in the coil or the electromagnet 20, there is provided the plunger or core 820 composed of soft iron or the like, the upper end of which is pivotally connected to the lever 22.

The electromagnet 20 in the present instance is preferably mounted upon the horizontal extension 23 of the bracket 24, the opposite faces of which are preferably engaged by cushioning members, such as the

springs

25 and 26, the spring 25 being interposed between the upper face of the extension is and'the abutment 21 andthe spring 26 being interposed between the lower face of the extension 23 and the base forming face 28.

The bracket M has two upwardly extending arms 29 and t0, the upper end of the arm 30 forming a journal for the shaft 8, and the upper end of the arm 29 forming a Journal for the pivot pin 3i pivotally connecting the lever '22.to such arm 29. The lever 22 has an extension 32, the outer end of which is connected by the spring. 33

to the abutment 34 extending i'rom theside of the armfls. l 1 l l The :upper extension 35 of the lever '22 adjacent its pivot-connection at the pi 13 i is connected to one end of the brake band 36, the other end extension 37 of the arm 29. The brake band ,38 I

constitutes arestraining member in the present -instance to cooperate withanother .i'estralning -:me r o 1 a est t me of th tape puller, to wit the tape pulling roller lwhenjthe tape itto raiseethelink. l i and th jlieby rockthe minals II and I8 and thereby interrupt the electrical circuit of the electromagnet 20.

The second restraining member in the present instance is the brake drum 38 integral with the tape pulling roller 1. When the electromagnet circuit is thus interrupted, the core 2i is released whereupon the spring 33 acts on the extension 32 in turn to clamp the brake band 88. into locking engagement with the brake drum 38 and thereby anchor the tape pulling roller 1 against further movement with the shaft 8.

The shaft 8 in the present instance has fixed thereto the worm wheel 39 in mesh with the worm 40 fixed on the shaft 4i journaled in the casing I and having fixed on its outer end the sheave 42 connected to the sheave 43 on the motor shaft 44 of the motor 45 by the belt 46.

For normally connecting the pulling roller 1 in driving relation with the shaft 8, there is provided a slippage device, the disc 41 being pinned to the shaft 8 and having its face 48 constituting a clutch face maintained in engagement with the opposing face 49 of the drum 38. The roller 1 and drum 38 are yieldably maintained in engagement with the disc 41 by the pressure collar 58 1 splined to the shaft 8 to slide relative to, but rotatewith, the shaft 8, the-pressure collar 58 being urged into engagement with the roller 1 in turn to urge the drum 88 into engagement with the disc 41 by the spring 5i tensed betweenthe abutment 52 and the pressure collar 50, the abutment 52 being preferably screw threadedly connected to the outer end of the shaft 8 to facilitate adjustment.

The tape I is preferably maintained in fric-' tional driving engagement with the tape pulling roller 1 by the pressure roller 58 mounted at the end of the lever 54 journaled in the support 55. The end of the lever 54 is preferably connected by a spring 56 or the like to yieldably press the rollerl 53 into frictional engagement with the tape In the embodiment shown in Fig. 4, the tape here designated forms a twist. between the ticker 58 andv the finger 59 of the electric switch distinguished from the embodiment shown in Fig. 1. In this embodiment, the finger I8 is mounted at the end of a lever 60 pivotally mounted in the switch box 8| to control a mercury switch similar to the mercury switch shown in Fig. 1 in turn to control the electric circuit of the electromagnet 82.

Here too, as distinguished from the embodiment shown in Fig. 1, the tape 51 after leaving the projector passes in a counterclockwise direction under the tape pulling roller 88- as distinguished from the embodiment shown in Pig. 1. From the tape puller 83, the tape 81 passes up to the rewind reel 84 journaled at the upper end of the bracket 85 extending from the housing 88.

.The shaft of the rewind reel 84 has secured there'- to a sheave 81 to receive the belt 88, preferably a spring belt, which is connected to a sheave mounted on the shaft 88 journaled in the housing 88.

flected onto the rear face' of the translucent screen ll. It is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit of the invention as set forth in the appended claims.

I claim:

1, The combination with an intermittently operated tape feed, of a support, a tape puller 5 for drawing the tape across said support as it is fed thereto, a continuously operating electric motor independent of said tape feed, a driving member operatively connected to said motor, a driven member operatively connected to said tape puller, 10 said driving and driven members being operatively associated normally to drive with one another, a restraining means, a device engaging the tape and responsive to rock with varying tension in the tape, an electric circuit including an elec- 15 tromagnet and electric contacts, said electric contacts being movably associated with said device to close said electric circuit and energize said electromagnet, said electromagnet being operatively associated to control said restraining 0 means, said device being actuated by the tension in the tape resulting'when the feed to said support is arrested and the tape puller continues its pull on the tape in turn to effect the movement of said contacts to open said electric circuit to 25 deenergize said electromagnet thereby to actuate said restraining means in turn to anchor said driven member against movement with said driving member.

2. The combination with an intermittently operated tape feed, of a support, a tape puller for pulling the tape across said support as it is fed thereto, a continuously operating electric motor independent of said tape feed, a driving member operatively connected to said motor, adriven member operatively connected to said tape puller, said driving and driven members being operatively associated normally to drive with one another, a restraining means operable to. anchor and lock said driven member against rotation, a movably mounted bracket, an-electric switch including an element operatively associated with said bracket, said bracket being operatively connected to engage the tape and responsive to varying tension in the tape to be rocked thereby in turn to open or close said switch, and an electric circuit including an electromagnet and said switch, said electromagnet being operativelyassociated to control said restraining means in turn to anchor said driven member against movement with said driving member when the feed to said support is arrested and the tape puller continues its pull on the tape in turn to rock said bracket.

3. A tape pulling mechanism for converting an intermittent tape feed to a continuous tape feed and operable to come to rest when the supply of tape thereto is interrupted comprising an intermittently operated tape feed, a support, a. tape puller for continuously drawing the tape across said support as it is delivered by said tape feed, a continuously operating electric motor independent of said tape feed, a driving member operatively connected to said motor, a driven member operatively connected to said tape puller. said driving and driven members being operatively associated. normally to drive with one another, a restraining member operable to anchor and lock said driven member against rotation when-the tape feed stops and the tape puller continues to operate to increase the tension in the tape between said tape feed and said tape puller, and a control mechanism for controlling said restraining member including a movably mounted bracket operatively connected V to engage the tape and responsive to rock with varying tension in the tape, an electric circuit including an electromagnet and a switch operatively connected to said bracket, and a spring opposing said electromagnet to actuate said restraining member either to anchor or release said driven member, said electromagnet being energized when said switch is closed by the movement imparted to said bracket by the tape.

4. A tape pulling" mechanism for converting an intermittent tape 'feed to a continuous tape feed and operable to come to rest when the supply of tape thereto isinterrupted comprising an intennittently operated tape feed, a support, a tape puller for continuously drawing the tape across said support as it is delivered by said tape feed, a continuously operating electric motor independent of said tape feed, a driving member operatively connected to said motor, a driven member operatively connected to said tape puller, said driving and driven members being operatively associated normally to drive with one another, a restraining member operable to, anchor and lock said driven member against rotation when the tape feed stops and the tape puller continues to operate to increase the tension in the tape between said tape feed and said tape puller, a movably mounted bracket operatively connected to engage the tape and responsive to varying tension in the tape, and a control in? cluding an electromagnet and a spring opposing one another and operatively connected to actuate said restraining member to anchor or release said driven memberand an electric circuit for said electromagnet including a switch controlled by said bracket in turn to control the operation of said electromagnet.

5. A tape pulling mechanism for convertingan intermittent tape feed to a continuous tape feed and operable to come to rest when the supply of tape thereto is interrupted comprising an intermittentlyoperated tape feed, a support, a tape puller for continuously drawing the tape across said support as it is delivered by said tape feed, a continuously operating electric motor, a driving member operatively connected to said motor, a. driven member operatively connected to said tape puller, said driving and driven members being operatively associated normally to drive with one another, a brake operable to anchor and lock said driven member against rotation when the tape feed stops and the tape puller continues to operate to increase the tension in the tape between said tape feed. and said tape puller, a pivotally mounted bracket operatively connected to engage the tape and movable with the tape, and a control including an electromagnet and a spring opposing one another and operatively connected to actuate said brake to anchor or release said driven member and an electric circuit for said electromagnet including a switch controlled by said bracket in turn to control the operation of said electromagnet.

6. A tape pulling mechanism for converting an intermittent tape feed to a continuous tape feed and operable tocome to vrest when the supply of tape thereto is interrupted comprising an intermittently operated tape feed, a support, a tapepuller for continuously drawing the tape across said support as it is delivered by said tape feed, a continuously operating electric motor independent of said tape feed, a driving member operatively connected to said motor, a driven member operatively connected tosaid tape pulle said driving and driven members being operatively associated normally to drive with one another, a restraining member operable to anchor and lock said driven member against rotation when the tape feed stops and the tape puller continues to operate to increase the tension in the tape between said tape feed and said tape puller, a bracket operatively connected to engage the tape and movable with the tape, and a control including an electromagnet and a spring opposing one another operatively connected to actuate said restrainingmember to anchor or release said driven member and an electric circuit for said eelctromagnet including a switch operatively connected to said bracket, said switch being opened when said bracket is rocked by the tension resulting when the tape feed stops in turn to deenergize said electromagnet toenable said spring to actuate said restraining member to anchor said driven member and thereby said tape puller against further movement until the tension in the tape is again relieved with the operation of the tape feed.

'7. A tape pulling mechanism for converting an intermittent tape feed to a continuous tape feed and operable to come to rest when the supply of tape thereto is interrupted comprising an intermittently operated tape feed, a support, a tape puller for continuously drawing the tape across said support as it is delivered by said tape feed, a continuously operating electricmotor, a driving member operatively connected to said motor, a driven member operatively connected to said tape puller, said driving and driven members being operatively associated normally to drive with one another, a. brake operable to anchor. and lock said driven member against rotation when the tape feed stops and the tape puller continues to operate to increase the tension in the tape between said tape feed and said tape puller, a pivotally mounted bracket operatively connected to engage the tape and movable with the tape, and

a control including an electromagnet and a spring opposing one another operatively connected to actuate said brake to anchor or release said driven member and an electric circuit for said electromagnet including a switchoperatively connected to said bracket, said switch being opened when said bracket is rocked by the tension resulting when the tape feed stops in turn to deenergize said electromagnet to err-- able said spring to actuate said brake to anchor said driven member and thereby said tape puller against further movement until the tension in the tape is again relieved with the operation of 'supply of tape thereto is interrupted comprising an intermittently operated tape feed, a support, a tape puller. for continuously pulling the tape across the support as it is delivered by said tape feed, a continuously operating electric motor, a driving member operatively connected to said motor and operatively associated normally to drive said tape puller, a brake operable to anchor and lock said tape puller against rotation when the tape teed stops and the tape puller continues to operate to increase the tension in the tape between said tape feed and said tape puller, a pivotally mounted bracket operatively connected to engage the tape and movable to be rocked by the tape, and a control including Q brake to anchor or release said tape puller and an electric circuit for said electromagnet including a switch controlled by said bracket in turn to control the operation of said electromagnet.

9. A tape pulling mechanism for converting an intermittent tape feed to a continuous tape feed and operable to come to rest when the supply of .tape thereto is interrupted comprising an intermittently operated tape feed, a support, a tape puller for continuously pulling the tape across the support as it is discharged by the tape feed, and means for arresting the tape puller when the tape feed comes to rest including a brake drum associated with said tape puller, a brake band operatively associated to anchor said brake drum and thereby said tape puller against rotation, a pivotally mounted bracket operatively connected to engage the tape and movable to be rocked by the tape, and a control including an electromagnet operatively connected to actuate said brake band to anchor or release said brake drum and an electric circuit for said electromagnet including a switch controlled by said bracket in turn to control the operation 01' said electromagnet. i

10. A tape pulling mechanism for converting an intermittent tape feed to a continuous tape feed and operable to come to rest when the supply of tape thereto is interrupted comprising an intermittently operated tape feed, a support, a tape puller for continuously pulling the tape across the support as it is discharged by the tape feed, means for arresting the tape puller when the tape feed comes to rest including a brake drum associated with said tape puller, a brake band operatively associated to anchor said brake drum and thereby said tape puller against rotation, a pivotally mounted bracket operatively connected to engage the tape and movable to be rocked by the-tape, and a control including an electromagnet and a spring opposing one another operatively to actuate said brake band to anchor or release said brake drum, an electric circuit for said electromagnet including a mercury switch operatively connected to said bracket, said' switch being opened when said bracket is rocked by the tension resulting when the tape feed stops in turn to deenergize said electromagnet to enable said spring to actuate said brake band to anchor said brake drum and 5 thereby said tape puller against further movement until the tension in the tape is again relieved with the operation of the tape feed.

11. A tape pulling mechanism operable to come to rest when the supply oi tape thereto 10 is interrupted comprising a tape puller, operated independent of the tape supply, restraining members one of which restraining members is operatively connected to rotate with said tape puller,

a movably mounted bracket in engagement with 15 the tape, an electric circuit including an electromagnet and an electric switch operatively associated with said bracket, said electro-magnet being operatively associated to the other of said restraining members when energized to actuate 20 said other restraining member to free said rotatable restraining member for rotation, said bracket when rocked by the tension in the tape resulting when the supply of tape to said tape puller is interrupted to actuate said electric 25 switch in turn to deenergize said eleotro-magnet.

12. A tape pulling mechanism operable to come to rest when the supply of tape thereto is interrupted comprising a tape puller, a rotatable restraining'member operatively connected to rotate 30 with said tape puller, a second restraining member, a pivotally mounted bracket in engagement with the tape and normally deflecting the tape, an electric circuit including an electro-magnet and an electric switch operatively associated 5 with said bracket, said electro-magnet being opv eratively associated to said' second restraining member when energized to actuate said second restraining member to free said rotatable restraining member for rotation, said bracket when 40 rocked by the tension of the tape resulting when the supply of tape to said tape puller is interrupted to actuate said electric switch in turn to deenergize said electro-magnet.

I AUGUST D. EI'I'ZEN. 45