US2052593A - Data recording projection machine - Google Patents

Description

F. E. ANDERSON DATA RECORDING PROJECTION MACHINE Sept. 1, 1936.

Original Filed May 9, 1931 2 Sheets-Sheet l INVENTOR.

ATTORNEY Sept. 1, 1936. F. E. ANDERSON DATA RECORDING PROJECTION MACHINE Original Filed May 9, 1951 2 Sheets-Sheet 2 HHWHHIHHI JNVENTOR. frafl/iiflflderswz By @001 ATTORNEY Patented Sept. 1 1936 QFFIJQ'E DATA RECORDING PROJECTION MACHINE ApplicationMay 9, 1931 Serial No. 536,212 Renewed May 29, 1935 12 Claims.

This invention relates to data recording projection machinesin. general and, more especially to stock quotation.projectionmachines in which the-actuating motor for. the tape pulling device is operated continuously.

Among the objectsa of the present invention, it isoaimed to provide-an improveddevice for pulling the tape throughea stock quotation projection machine whereby themotor is continuously operatedand; a tape pulling device positively con.-

t-rolled totvary its speed according to the speed,

of discharge of the tape by theticker.

It is stilltanother object of the present invention to provide an improved variable friction drive for the vtapepulling, device of a stock quotation projection machine whereby: the speed of the tape pulling device is changed to correspond to the speed ofdischarge of the tape fromthe ticker and simultaneously. therewith.

It is still another-object of the present inven tion to provide an improved tape. pulling device for a stock quotation projection machine in which the speed is positively varied to'oorrespond simultaneously with the speed of discharge of the tape which/can be constructed at a. minimum cost and can beoperated without the attention of a skilled mechanic.

It is still another object .ofthepresent invention to provide an improved tape mounting reel.

These and other features; capabilities andadvantages of the invention, will appear from the subjoined detaildescription of onespecific embodiment thereof, illustrated in the accompanying drawings in which Figure 1 is a side elevation ofa stock quotationprojection machine made according to the pres-- ent invention with theprojection screenomitted;

'Fig. 2 is a plan View of the same;

7 Fig. 3 is a fragmental longitudinal section showingpart of the; controlling means in detail;

Fig. iis a section on the-line 44 of Fig. 3;

Fig.5 isa fragmental section of a view of the sion- 4 extendingifrom the side of the lamp house.

5. From the light aperture or projection fieldi, the tape passes down under the tape pullingroller 6 and then over onto the reel 1.

The light aperture 3 preferably has provided at its entrance end a guide piece 8 consisting of two upwardly extending projections between. which the tape T passes to the light aperture. At the discharge end of the light aperture, there is provided a similar guide piece 9 consisting of similar upwardlyextending projectionsthrough which the tape T passes as it leaves the light aperture on its way to the tape pulling roller 6.

Above the light aperture 3, there is provided the objective lens l which is preferably secured in-the casing l I formed at the end of thebracket I2 extending upwardly from the lamp house extension 4.

The light rays in the usual way pass upwardly from the extension 4 through the light aperture 3' onto the tape T and after receiving the image passqon to the objective lens ID to a suitable screen casing or housing not shown.

The present invention is mainly concerned with the tape pulling device according to which the elementwhich controls the movement of the tape also. irons out the vibrations transmitted to the tape by the ticker in, accordance with the principle set forth in. the Proctor Patent No. 1,299,024.

The finger 2 is in the nature of a rollerin thepresentinstance having a raised edge I3. in themiddle thereof to. engagethe tape between the two rowsof type which are ordinarily formed on the average ticker tape. This roller 2.is. rotatably mounted on a shaft formed on the end-of the short arm portion l4, formed at the end of the elongated 'arm portion fi which is secured at IE to the pin ll'fixed onto the arm l8 extendingin line with the armportion l inside of the housing I 9.

' The end of the arm l8; see Fig. 3 is provided with-a bifurcation 29 having slots 2-! in its bifurcated ends'to receive the pins 22-extending outwardly from the enlarged portion 23 of-thespindle 24 slidably mounted inthe worm-25 fixed to rotate therewith having a keyway 26 formed therein to receive a key formed on the worm 25. The worm 25 is fixed to rotate between the bearings 2] and 28, secured to the rear wall29 ofthe housing l9.

Theupper end of the spindle 24 is rotatably mounted in the bearing. 30 also secured to the end wall 29. The upper wall portion 31 of the housing 13 is provided withla chambered extenably to extend into the same.

Between the bearing and the bearing 21,

there is formed a friction wheel 33 which is secured in place by any suitable means and consists essentially of some compressible substance, such for instance as rubber. This wheel has a large bearing surface as shown in Fig. 3 which engages the friction disc 34 spaced from the center of the disc from a point above the same according to the speed to be attained. The disc 34 is slidably secured to the disc portion 35 by the pin 36 but urged outwardly by the spring 31 formed in the center recess 38 of the shaft portion 39, the spring pressing the friction disc 34 into frictional contact with the frictional wheel 33.

The shaft 39 is mounted in the journal 40 secured to the wall 4| which is provided with the bearings 42 disposed between the collar 43 andv the shoulder portion 44 on the shaft 39, the collar 43 beingthreadly connected to the end of the journal 43 in order to adjust the portion of the shaft and therewith the disc 34 relativeto the friction wheel 33.

On the end of the shaft 39, there is formed the pulley 45 having a hub 46 which is secured to the shaft 39, in any suitable manner, the screws 41 being illustrated in the present instance. The pulley 45 is connected by the spring belt 48 in the present instance to the sheave 49 formed on the shaft 53 of the motor 5|, see Fig. 1.

The worm 25 meshes with the worm wheel 52, see Fig. 3, mountedon the shaft 53 extending through the housing I9 and having on one end the tape pulling roller 3, see Figs. 1 and 2 and on the other end the sheave 54 which is connected by the spring belt 55 with the sheave 55 on the shaft 51 mounted in the bracket 58. The shaft 51, see Fig. 5, has formed thereon the reel I.

The arm I8 is tensed upwardly by the spring 59 extending from the arm I8 to the abutment 66 formed on the front wall 6| of the housing I9. From the foregoing, it will be seen that as the ticker operates to form the loop L between the ticker and the projection field 3, the finger 2 engaging the same will permit the arm portions I4 and I5 to descend thereby causing the arm I8 to rise and move the spindle 24 upwardly through the worm 25 and bearing 35 to cause the friction wheel 33'to rise above the center of the friction disc 34. The friction disc 34 being constantly rotated through'its connection with the motor 5| will obviously transmit a greater speed to the friction wheel 33 as the friction wheel 33 approaches the periphery of the friction disc 34.

In turn as the ticker stops and the tape pulling motor. continues to operate the slack L will of course be taken up in'turn to cause the arm portions I4 and I5 again to ascend and thereby cause the arm portion I8 to descend to return the friction wheel 33 to the center of rotation of the disc 34, at which portion of the disc 34, the

. friction wheel 33 is maintained at rest.

It will be noted that the spring 59 merely cooperates with the levers I4 and I5 and arm portion I8 so that the slack formed by the'ticker in the tape ,T will be followed. up as quickly as pos. sible and thus prevent any snapping or sudden drop of the lever portions I4 and I5 when the ticker starts operating to strike the tape and cause the same to vibrate. When the finger 2 follows up the slack as quickly as it is formed, the

possibility of causing the tape to whip or vibrate either from the sudden striking of the tape by the finger or the striking of the tape by the type of the ticker is practically avoided. in other words, the finger 2 by this means holds the tape throughout the operation of the ticker in intimate engagement with the guide 8 so that no separate vibration dissipating device need be formed at this portion of the light aperture 3.

The change of speed transmitted to the tape pulling roller 6 will correspond substantially with the change of speed of discharge of the tape. an active market, the ticker will of course be operated at high speed and rarely come to rest. If the tape pulling device were operated always at a faster speed than the speed of discharge of the tape, as has been the custom heretofore, there is of course the danger of exercising an undue amount of pull on the tape, at any rate a greater pull than is necessary to pull the tape across the light aperture.

is operating at high speed, the tendency to form a greater loop occurs as a result of which however the friction wheel 33 is moved nearer the periphery of the friction disc 34 in turn to transmit a greater speed to the worm 25 and through it to the tape pulling roller 6; V I

Consequently as fast as a. larger loop is formed the slack is more quickly taken up to again return the friction wheel 33 to the lower area where is receives a lower rate of speed. A very nice balancing action results in turn to produce a Very even and uniform movement of the character and images on the tape. e

As shown in Fig. 3, the friction wheel 33 can be easily replaced in case of wear and in turn for ordinary wear, the spring 38 will compensate adequately and if need be the collar 43 may be manipulated further to compensate for such wear. As shown in Fig. l, the tape T is maintained in engagement with the tape pulling roller 5 by means of the idler 62 formed at the end of the bracket 63-mounted on the pin 64 which bracket 63 and in turn idler 52 is resiliently maintained in engagement with the roller 6 by the spring 65. The shaft 5I has formed thereon a cap 66 to which is permanently secured the disc Bl whichin turn has secured thereto a hub'68. This hub 68 has a central chamber 69 to receive the spring 10 which is mountedon the spindle II of the key 12 and tensed between the collar I3 and the end I4 of the chamber I0 tourge the key I2 inwardly.

As shown in Fig. 6 there is also provided a removable disc portion which consists essentially of the 7 a disc portion I5 having formed thereon a spring collar I6 composed of spring metal and provided with a slot TI to permit the same to spring in wardly. a V

This collar I6 is intended to snugly grip the hub 63 when in place as shown in Fig. 2 and to turned substantially at right angles to the slot as shown in Fig. 7 to engage the outer face of the disc I5 and thereby maintain the disc I5 in place against accidental displacement. For threading a'strip of tape on the collar I6, there is formed a pin 82 extending from the face of the disc I5 adjacent to the collar I6, see Figs- Sand 7-; 'Ihe end of the tape is merely slipped under'the pin- '82 and then folded backwardly in opposition to the-direction of rotation.

By means of this reel a strip of tape can be quickly threaded on the removable portion before the same'is mounted on the fixed portion fil and in turn bymeans of the key 12 the removable portion quickly removedwhen the reel has been filled in turn to remove the tape from such reel.

It is obvious that various changes and modification may be made tothe detailsof construction without departing from the general spirit of the invention as set forth in' the appended claims.

-I claim:

1'. In a stock quotation projection machine, the combination with a projection field, of a tape pulling device'for drawing the tape across said projection field as it is fed thereto, a driving disc continuously operatingat a uniform rate of speed, a speed changing device havinga'friction Wheel in frictional engagement with said driving disc and operatively connected to said tape pulling device, a control lever having an elongated arm and a short arm;the end of the elongated arm resting on the tape in advance of the projection field to exercise a tension on the tape to cooperate with the pulling device to maintain the same smooth atv the projection field and to respond to deflections in the tape, the end of the short arm of. said control lever being operatively connected to support said friction wheel to change the position of said-friction wheel relative to the center of 'said'dn'ving disc according to the deflection in said tape, and a spring cooperating with said lever to take up the slack in said tape as quickly as formed.

2. In a stock quotation projection machine, the combination with a projection field, of a tape pulling device for pulling the tape through said projection field, a driving disc continuously operating at a uniform rate of speed, a rotatable member operatively connected to said tape pulling device, a vertical spindle slidable in said rotatable member and being fixed to rotate therewith, a friction wheel fixed on said spindle in frictional engagement with said driving disc, and a lever resting on the tape in advance of the projection field to exercise a tension on the tape to cooperate with the pulling device to maintain the same smooth at the projection field and responsive to deflections in the tape, said lever being operatively connected to support said spindle to change the position of said friction wheel relative to the center of said driving disc according to the deflection in the tape.

3. In a stock quotation projection machine, the combination with a projection field, of a tape pulling device pulling the tape across the projection field, a driving disc continuously operating at a uniform rate of speed, a rotatable member operatively connected to said tape pulling device, a vertical spindle slidable in, and fixed to rotate with, said rotatable member, a friction wheel mounted on said spindle, means for resiliently pressing said. driving disc into frictional engagement with said friction wheel, and a control lever having one arm in engagement with the tape in advance of the projection field to exercise a tension on the tape to cooperate with the pulling device to maintain the same smooth at the projection field and movable in response to deflections of the tape, said control lever having its other arm operatively connected to support'said spindle to change the position of said friction wheel relative to thecenterof said driving disc according to the deflection in the tape. 4; In a stock quotation projection machine, the combination with a projection field,.of a tape pulling roller for pulling the tape through said projection field, a driving disc continuously operating at a uniform rate of speed, a Worm 0perati'vely connected to said tape .pulling roller, a vertical spindle slidable in, and fixed to rotate with, said worm, -a friction wheel mounted on said spindle and in frictional engagement with i said driving disc, and acontrol lever having one end thereof resting on the tape in advance of the projection field to exercise a tension on thesame to cooperate-with the pulling roller to maintain the tape smooth at the projection field and responsive to deflections in the tape, said lever having its other end operativeh connected to support said spindle, said control lever being r'ulcrumed between its ends and operative to change the position of said friction wheel relative to the center of said driving disc according to the deflectioninthe tape.

5. In a stock quotation projection machine, the

combination with a projection field, of a tape pulling roller at the discharge end of the projection field to pull the tape therethrough, a driving disc continuously operating at a uniform rate of speed, a friction wheel in frictional engagement with said driving disc and operatively connected to said pulling roller, an elongated control lever having" one end resting on and in engagement with the tape in advance of the projection field to exercise a tension on the same to cooperate with the pulling roller to maintain the tape smooth at the projection field and responsive to deflections in the tape, said lever having its other end operatively connected to support said friction wheel, said lever being fulcrumed between its ends and operative to change the position of said friction wheel relative to the center of said driving disc according to the deflection in the tape, and a spring cooperating with said lever to follow up the slack in said tape as quickly as formed.

6. A variable speed device for controlling the feed of tape having a driving disc, a friction wheel in frictional engagement with said disc, a vertical spindle on which said friction wheel is fixed, a tape feeding device operatively connected to said friction wheel, and a lever responsive to the tension in the tape operatively connected to support said spindle to change the position thereof relative to the center of said driving disc according to the tension in the tape.

7. A variable speed device for controlling the feed of tape having a driving disc, a friction wheel, means for pressing said driving disc into frictional engagement with said friction wheel, a vertical spindle on which said friction wheel is fixed, a tape feeding device operatively connected to said friction wheel, and a lever responsive to the tension in the tape operatively connected to support said spindle to change the position thereof relative to the center of said driving disc according to the tension in the tape.

8. In a stock quotation projection machine, the combination with a tape pulling device, of a driving mechanism having a driving disc continuously operating at a uniform rate of speed, a speed changing device having a friction wheel in frictional engagement with said driving disc, a vertical spindle on which said friction wheel is fixed and operatively connected to said tape pulling device, and a lever responsive to deflections l .l 13m sews-easiest:

in the tape to be drawn'by said pulling device, one arm of said lever operatively connected to support said spindle and the other arm resting on the tape tobe drawn for changing the position of said friction wheel relative to the center of said driving disc according to the speed to be attained. a

9. In a stock quotation projection machine, the combination with a. tape pulling device, of a driving disccontinuously operating at a uniform rate of speed, a speed changing device having a friction wheel in frictional engagement with said driving disc, 2. vertical spindle on which said friction wheel is fixed and operatively connected to said tape pulling device, a lever responsive to deflections in thetape to be drawn by said pulling device, one arm of said lever being operatively connected to support said spindle and the other arm restingon the tape to be drawn for changing the position of said friction wheel relative to the center of said driving disc according to the speed to be attained, and a spring co-operating with said lever to follow up the deflection in the tape as quickly as formed. V

10. Inv a stock quotation projection machine, the combination with a tape pulling device, of a'driving disc continuously operating at a uniform rate of speed, a speed changing device having a friction wheel in frictional engagement with said driving disc, a vertical spindle on which said friction wheel is fixed and operatively connected to said tape fulling device, and a control lever responsive to the tension in the tape and operatively connected to supportsaid spindle to control the position of said friction wheel rela: tive to the center of said driving disc according to the speed to be attained. I g a i 11. The combination with a tape pulling device, of a driving mechanism having a driving disc continuously operating at a uniform rate of speed, a friction wheel in frictional engagement with said driving disc, a slidably mounted spindle on which said friction wheel is fixed and operatively connected to said tape pulling device, and a lever responsive to deflections in the tape to be drawn by said pulling device, one arm of said lever operativelyconnected to support said spindle and the other arm resting on the tape to be drawn for changing the position of said friction wheelrelative to the center of said driving disc.

12. The combination with a device for pulling tape across a support having a light aperture, of a friction drive including a driving memberand a driven member, and ai'pivotally mounted lever;

E. "ANDERSON.

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