US2155414A - Tape advancing machine - Google Patents

Description

. April 25, 1939. A. D. EITZEN TAPE ADVANCING MACHINE 3 Sheets-Shet 1 Original Filed Feb. 7, 1929 INVENTOR B tflEW ATTORNEY April 25,1939. A. D. EITZEN TAPE ADVANCING MACHINE Original Filed Feb. 7, 1929 3 Sheets-Sheet 2 ATTORNEY April 25, 1939. A, D. ElTZEN TAPE ADVANCING MACHINE Original Filed Feb. 7, 1929 3 Sheets-Sheet 3 a 90 afi d' as INVENTOR tfi-E'vt 011/,

ATTORNEY M Y B. Pu 0 M C S l i 9 B 4 D W 5 6 0/ X C 0 T 54 On 0 IO Q w 5 F? I o 7- 8 m w i1 2 F 58 w 4 Km DD 4 X m 5 w 2 5 ix 9 X l 2 We. R 9 T O 9 5 5. Q 6 Q R/ 2 M R l Z cu 7O |H||. m a w b a C Patented Apr. 25 1939 2,155,414 TAPE ADVANCING MACHINE August D. Eitzen, Rockville Centre, N. Y., as-

signor to News Projection Corporation,- New York, N. Y., a corporation of New York Application February 7, 1929, Serial No. 338,065 Renewed April 17, 1934 24 Claims.

My present invention relates generally to tapeadvancing machines, and has particular reference to stock quotation projecting machine's. Although I have herein illustrated and shall hereinafter describe my invention associated with a stock ticker adapted to discharge ticker tape as it is marked, ne vertheless it will be understood that as to certain phases of my invention it is not limited to an application of this character.

In brokerage offices and the like, it has been customary to pass the ticker tape, as it emerges, in a substantially continuous manner from the stock quotation ticker through a suitable projecting machine whereby the markings on the tape are displayed upon a :suitable screen and upon a greatly enlarged scale. Where the tape has emerged from the ticker at a rate of speed no greater than approximately thirtyr-five (35) inches per minute, it has been satisfactory to pass the tape through the projecting machine in a substantially continuous moving manner whereby the markings travel across the display screen from right to left to permit reading of the successive markings with considerable ease. Of late, it has been contemplated to speed up tickers so that the tape emergestherefrom at a considerably greater speed. I have found that the projection of tape moving at, say, seventy (70) inches per minute, is not feasible in this same continuously moving manner because'the eye cannot read and visualize the successive markings with suflicient rapidity.

It is a general object of my present invention to provide means for overcoming this obstacle and to provide a projecting machine of the character mentioned wherein means are provided for permitting a display of successive markings in a readable manner despite the greatly accelerated speed of the ticker operation.

My invention is predicated upon the physical fact that the human eye can more readily perceive and take in a stationary object than one which-is moving, for in the latter case, the eye is subjected to the additional strain of following the movement. With this in mind, it is a feature of my invention to provide means for subjecting successive areas of the marked tape to stationary projection, each period of rest being. just sufliciently great with respect to the area displayed to permit the human. eye to properly visualize and read the markings on such area.

Thus, if the projecting device commands a projection area equal to five (5) inches of the ticker tape, and if the ticker'is supplying marked tape at the rate of, say, seventy ('70) inches per minute, a continuous movement of the tape through said device would allow each marking to be subjected to projection for a maximum of one-fourteenth of a minute, or approxi- 5 mately four (4) seconds. In accordance with my invention, this period of time is made use of in a manner whereby most of it is utilized in projecting and enabling a visualization of a stationary area of the tape, and whereby the remaining fraction of such time duration is utilized in advancing the tape by a predetermined amount to subject the next successive area to such projection. Obviously, the rate of each advancement is considerably in excess of the seventy (70)' inches per minute illustratively mentioned. I

With the foregoing general object in mind, it is a more specific object to provide a device for achieving the foregoing results by means of mechanism which operates automatically and in a manner unobjectionable to the observer. In a preferred embodiment, the mechanism is automatically operated by the tape itself during its advancement in the step by step manner mentioned, and more particularly, by that portion of the tape which is about to enter the projecting device.

A particular feature-of my invention lies in providing the projecting device with a shutter or other means for intermittently obliterating or interrupting the image projecting light rays which is automatically operated along with the other mechanism .referred to so as to be open only during those times when a portion of the tape is stationary within the projecting device. In this way, the eye of an observer is not subjected to the strain of having to follow any movement whatsoever.

A further feature lies in advancing the tape in the aforementioned step by step manner so that each successive area of the tape is subjected to a stationary display at least twice. I accomplish this, for example, by advancing the tape two and a half (2 inches where the projecting device commands a display field or area of five (5) inches. In such an arrangement, each successive area of two and a half (2 /2) inches of the marked tape is advanced into and out of a predetermined position of rest within the projecting device and within a predetermined half of the field which such device commands.

Other features of my invention lie in the provision of means for advancing the tape in an efficient and simple manner, holding the tape in a taut and stationary condition during periods of display, operating the shutter in an expeditious way, and in general, providing automatic mechanism which is simple in nature, eificient, compact, and reliable.

For the attainment of the foregoing objects and such other objects as may hereinafter appear or be pointed out, I have constructed a machine embodying the features of my invention and illustrated in the accompanying drawings in which- Figure 1 is a diagrammatic representation of certain parts of the machine and mechanism illustrating thegeneral nature of, operation;

Figure 2 is a diagrammatic cross-sectional view, taken at right angles to Figure 1., and illustrating the nature of operation of the shutter;

Figure 3 is an enlarged view of that portion of the machine illustrated in the lower right part of Figure 1;

Figure 4 is a cross-sectional view taken substantially along the line 44 of Figure 3;

Figures 5w-5e are developments of an electric contact system forming part of the mechanism illustrated;

Figure 6 is a cross-sectional view on an enlarged scale of a portion of the tape-engaging means, taken substantially along the line 66 of Figure 3;

Figure 7 is a view similar to Figure 3 showing the parts during one phase of operation;

Figure 8 is a view similar to Figure 3, showing the parts during a difi'erent phase of operation; and

Figures 9w-9c are representations of the displayed markings as they appear to an observer.

Referring to Figure 1 I will point out in a general way that my invention involves the combination with a stock quotation ticker IU of a projecting device tape-advancing means I 2, a source of power such as the motor l3, and a tapewinding apparatus I4. The ticker I is adapted to discharge the marked ticker tape IS in a substantially continuous manner well known in the art. This tape is led through the device entering the latter over a support or guide It and leaving the same over a guide roller or the like I1. The projecting device II is provided with a suitable device to be interposed between the source of light and the screen such as a color screen, frosted glass or opaque screen for inter?- mittently interrupting the passage of the image producing light rays. In the present instance, there is provided a shutter l8 and an objective lens or the like l9, whereby a source of light within the device II will operate to project the markings of the tape upwardly through the shutter I8 and the objective i9 and thence onto a suitable display screen.

The motor I3 is provided with the constantly rotating shaft 20 upon which a sheave 2| is mounted, the latter driving the winding mechanlsm H by means of the belt or thong 22. The motor is caused to operate in a continuous manner by constant connection of a plug 23 or the like with a source of current.

Arranged at the entrance to the device I I is a tape-gripping means which may consist of a finger 24 pivoted at 25 and adapted to bear down at 23 upon the support It, thereby sandwiching the tape and gripping the same. A spring or the like 21 may be provided for normally holding the finger 24 downwardly in gripping relationship to the support IS. A solenoid 28 is suitably arranged so that when it is energized it will raise the finger 24 and release the tape. The manner in which this solenoid is energized and de-energized at predetermined proper time intervals will be presently described.

The shutter I8 is preferably in the form of a solid cylinder, as shown in Figure 2, this cylinder being provided with the upwardly-narrowing slit or opening 29 through which the rays of light may normally pass toward the objective IS. The cylinder I3 is mounted to rock to a slight degree about its axis. A stop 30 cooperating with a pin 3| upon the cylinder l8 defines the normal open position of this shutter. A solenoid 32 is suitably arranged so as to pivot the cylinder l8 when energized, the amount of pivoting being just sufficient to block the upward passage of light rays. A spring or the like 33 serves to return and keep the cylinder |8 in its normal position as shown in Figure 2 whenever the solenoid 32 is deenergized. The manner in-which this solenoid is operated at predetermined time intervals will be hereinafter described.

An automatic and movable switch member is provided to be operable by that portion of the tape about to enter the projecting device. I have illustratively shown a lever 34 pivoted at 35 and constantly .urgedby a spring 36 or the like into a position where it breaks contact with a contact point 31. During a period of rest of the tape in the projecting device H, the supply feeding from the ticker festoons downwardly in the illustrated embodiment and exerts a slight but sufiicient pressure upon the lever 34 so as to establish contact with the point 31 against the action of the spring 36. When this contact is established, certain mechanism becomes operative, as will be presently described. As soon as the tape is advanced, this electrical contact is broken and certain mechanism thereupon becomes inoperative. The alternate establishment and breaking of the contact at 31 effects the automatic operation of the entire machine in the contemplated manner.

Referring to Figures 3 and 4, I have shown a supporting frame 38 arranged adjacent to the motor i3. At one end of the frame 38 I provide a guide roller 39 or the like under which the tape is adapted to pass. Extending in the direction of tape travel is a guide bar 40 upon which a tapeengaging device is mounted for reciprocating movement. This'device comprises the sleeves 4| and 42 mounted upon the bar 40, a spring 43 or the like being provided to impede the free movement of the sleeves 4| and 42 and cooperate to insure the proper action of the roller 49 hereinafter described. Projecting upwardly from the sleeves 4| and 42 is a wall 44, and projecting forwardly from the latter is a plate 45 over which the tape I5 is adapted to pass. Pivoted to the upper end of the wall 44, as at 46, is a bell-crank lever having the relatively long arm 41 .on the rear side of the wall 44 and the relatively short arm 48 on the opposite or near side of the wall 44. At the lower end of the arm 48 is a roller 49 adapted to cooperate with the plate 45 to grip the tape l5 at predetermined times and to release the same atother times. 'A connecting rod 50 pivoted at 5| to the lower end of the arm 41 serves to reciprocate the entire device along the bar 40 in a predetermined manner.

Before describing the means for actuating the connecting rod 50 I will point out that the arm 18 is of such length that the roller 49 in its movement to the right engages the tape l5 and impinges it against the plate 45, and in its movement to the left strikes the stop-pin 52, thereby clearing the tape l sufficiently to permit it freely to pass between the roller 49 and the plate 45. This arm approaches a point to the left of the vertical when the connecting rod 50 pulls the entire device to the right, and in such an event the roller 49 bears down upon' the plate 45, engaging the tape, and drawing the same along with the device as it moves to the right. On the return movement of the connecting rod 50, the arm 48 is thrown out of the gripping position, being limited in this movement by the stop 52' projecting from the wall 44. This slight throw of the arm 49 is sufficient to release the pressure of the roller 49 upon the plate 45 so that during the return movement of the engaging device (from the right to the left in Figure 3) the tape is sufficiently disengaged to permit the engaging device to slide freely thereover without carrying it backwards.

Referring now more particularly to the righthand portion of Figure 3 and Figure 4, I will illustrate the manner in which the connecting rod 50 is caused to operate.

Permanently mounted upon the end of the shaft 20 of the motor I3 is a friction drum or disc 53. This disc is keyed at 54 and rotates continuously with the shaft 29. Behind the disc 53 is a sleeve member 55 entirely disconnected from the shaft 20 and freely rotatable around the latter. This freedom of rotation is made possible by means of the ball bearings 56 or the like interposed between the shaft 2|! and the interior of the member 55. The latter member has a portion 51 extending forwardly and encircling the disc 53. The portion 51 is provided with the radial slot or recess .59 in which a friction shoe 59 is mounted for radial reciprocation. The shoe 59 is pivoted at 69 to one lever 6| of a pair of toggle levers. The other lever of the pair is designated by the refence numeral 62 and extends from a midportion 63 of the lever 6| to a pivot point 64 carried by the sleeve member 55 directly over the recess 58. A spring 65 extends from the pivot point 83 to a fixed point 66 upon the portion 51 and tends constantly to straighten the toggle levers 6| and 62 so as to force the shoe 59 inwardly into frictional. engagement with the periphery of the disc 53.

During periods of rest of the tape, the shoe 59 is held off the disc 53 by means of the pawl '61 interposed in the path of a pin 98 carried at the upper end of the lever 6|. The pawl 61 is pivoted at its rear end 69 to a portion of the frame 38. A spring 10 or the like tends to keep the pawl 61 in the position shown in Figure 3, but at predetermined intervals a solenoid 1|, suitably arranged with respect to the pawl 61, becomes energized and raises the pawl 61 to release the pin 68 and hence the lever 6|. Whenever this occurs, the spring 65 operates to force the shoe 59 into engagement with the disc 53 and thereby causes the entire sleeve member 55 to rotate with the shaft 20. Before one complete rotation, the pawl 61 again assumes its normal position whereby the pin 58 encounters such pawl and effects a lifting of the shoe 59. In this way, the sleeve member 55 is subjected to a series of single revolutions of approximately 360.

Pivotally associated with the portion 51, as

. at 12, is the rear end of the connecting rod 59. I wish to point out at this time that the point 12 is so located with respect to the point 5| that the connecting rod 50 assumes a. dead center position as shown in Figure 3 during periods of rest. As a result of this arrangement, each single revolution of the member 55 subjects the point 5| to a simple harmonic motion which assures a maximum degree of gentleness and efficiency in engaging the tape, advancing the same, and then releasing it.

Carried by the sleeve member 55 is a cam 13 adapted. to control the position of a cam roller .14 mounted upon the rear end of a lever 15 pivoted at 16 to the frame 38. The opposite end of the lever 15 is provided with a finger 11 adaptedto cooperate with'a supporting plate lilsimilar to the plate 45 but fixed to the frame 38. The tape I5 is adapted to pass over the plate 18, and whenever the roller 14 is held upwardly by the cam 13, the finger 11 bears down upon the plate 18 and grips the tape at this point for a purpose presently to bedescribed. A spring 19 is arranged to counteract the action of the cam 13 so that when the roller 14 is disengaged by the cam 13 the finger 11 will be lifted over the plate 18 by the spring 19, thereby releasing the tape.

Before describing the electrical means whereby the foregoing mechanisms are caused to operate in proper predetermined sequence, I will describe the operation of the machine.

The operation obviously occurs in cycles and a description of one cycle will therefore be sufficient. Let it be assumed that a certain amount of the tape has been collected, as shown in Figures 1 and 3, and that the lever 34 has closed the contact 31. The electrical leads 89 and BI extending from the lever 34 and contact point 31 connect with a source of current at 82 and extend to the solenoid 1| previously mentioned; Actuation of this solenoid immediately releases the lever 6|, permits the spring 65 to force the shoe 59 inwardly, and thereby causes the sleeve member 55 to rotate through a complete revolution. Upon reference to Figure '7, it will be seen that the first few degrees through which the member 55 rotates effect a release of the cam roller 14, whereby the finger 11 releases the tape. At almost the same time the shutter I8 is operated and the solenoid 28 is energized to raise the finger 26. Presently, the roller 49 bears downwardly upon the plate 45, thereby engaging'the tape, and during the simple harmonic motion to the right of the wall 44 the tape is advanced by a predetermined amount substantially equal to the distance between the point 12 and a point diametrically opposite thereto. This advancement is accomplished at a very great rate of speed, as will be understood when the nature of the motor drive is borne in mind. This great rapidity is rendered capable of advancing the delicate tape without damaging the same by virtue of the simple harmonic motion which is provided for'as above described.

In dot and dash lines in Figure 3 the parts are shown just after the connecting rod 59 starts on its return movement. Just asthis return movement is initiated, and practically simultaneously therewith, both the fingers 29 and 11 become operative to grip the tape at these spaced points and hold the same taut and stationary. At practically the same time, or a fraction of a second after, the shutter I8 is operated to openv and permit the projection 'of the stationary area or areas within the device I On the return movement of the connecting rod 58, the slight pivoting of the arm 48 effects a sufiicient release of the tape between the roller 49 and the plate to permit the engaging device to travel back to the full-line position of Figure 3 without carrying the tape with it. The contact of roller 49 and tape l5, and their disengagement, is facilitated by spring 43, bearing upon rod 49, causing a slight friction drag.

In Figure 8 I have shown the parts as they appear just prior to the completion of the return movement of this engaging device. The arm Si is seen approaching the pawl El, upon encounter Withv which the shoe 59 will be lifted from the disc 53 to complete the cycle.

The manner whereby I energize and de-energize the solenoids 28 and 32 at proper intervals, in accordance with the foregoing method of operation, is illustrated most clearly in Figures 3, 4, and 5a-5e.' Carried by the member 55 is an annulus 83 composed mainly of insulating material and provided with an insert 84 of conducting material. This insert is shaped as shown most clearly in Figures 5a-5e, which represent a development of the annulus 83.

Three brushes are arranged in. fixed position so as to slide over the surface of the annulus 83 each time the member 55 rotates. The relative positions of these brushes are shown in Figures 50-56. The brush 85 is connected by a lead 86 to the solenoid 32, the return lead 81 from the solenoid 32 tapping a source of current at 88 and leading thence to the brush 89 arranged in substantial alignment with the brush 85. Adjacent to the brush 89 is the brush 99 connected by a lead 9| to the solenoid 28, a return lead 92 tapping into the lead 81 and thence back to the brush 89. y

The brush 89 is thus a common brush. When the cycle previously described is about to be performed, no contact is established between the brush 89 and either of the brushes or 90. This means that both the solenoids 28 and 32 are deenergized, the shutter being thereby opened. and

the finger 26 being in gripping position. As the member 55 starts to rotate, contact is first established between the brushes 85 and 89, whereby the solenoid 32 is actuated to close the shutter l8. This electrical connection is shown in Figure 5b. Almost immediately thereafter contact is established between the brushes 89 and 90, as shown in Figure 50, whereby the solenoid 28 is energized to release the tape at 16. In Figure 5d I have shown the subsequent deenerglzation 'of the solenoid 28 because of the breakage of contact between the brushes 89 and 90. The shutter is thus still closed until the tape is absolutely stationary by virtue of the gripping thereof at the spaced points "5 and 11. Almost immediately thereafter, however, contact is broken between the brushes 89 and 85 as shown in Figure 5e, whereby the shutter is automatically re-opened.

All of the foregoing operations are thus seen to be rapidly, efiiciently, and automatically accomplished in proper sequence in. accordance with a predetermined plan so that the contemplated operation of the machine is assured. The cycles repeat themselves with great rapidity because it is desirable to keep step with the rapid rate of discharge of tape from the stock ticker H]. Despite this rapid. operation, the observer is enabled to read all the markings-with. comparative ease, and in Figures 9a9c I have shown the actual ultimate results of my invention as they appear to the observer.

Figure 90; represents a period of rest during which the adjacent areas 92 and 93 are displayed. upon the screen. Each of these areas represents, for example, a length of about two and a half (2 inches of the ticker tape, these areas remaining in stationary display for a period of approximately two seconds or for such other necessary period for enabling complete reading thereof. In a fraction of a second, the display is completely extinguishedand again made visible, at which. time it will appear as in Figure 9b. It is to be noted that the area 93 has advanced. to the position previously occupied by the area 92, and a new area 94 has taken the place of the area 93 on the screen. This new display also is retained for stationary observation for a predetermined and sufi'icient period, after which the light is again extinguished upon the screen, and in a fraction of a second thereafter the display appears as in Figure 90. It is to be noted that each area of the tape is on display on two successive occasions. In this way, there are two opportunities for the observer to read the markings in which he is interested, although one display is sufficient from the standpoint of time duration to permit complete reading thereof.

Although I prefer in this way to display successive areas of the tape in adjacent halves of the projection area commanded by the device I l, nevertheless it will be understood that my invention may provide for displays in different adjacent areas. The two and. a half (2 inch displays in two adjacent halves of the projection area are thus to be considered merely illustrative of the capabilities and characteristics of 'my invention.

It will be obvious that changes in the details herein described and illustrated for the purpose of explaining the nature of my invention may be made by those skilled in the art without departing from the spirit and scope of the invention as expressed in the appended claims. It is therefore intended that these details be interpreted as illustrative, and not in a limiting sense.

, Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is:

1. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device, and means for drawing the tape in a step by step manner through said device to advance the successiveareas of the tape into'and out of a predetermined position of rest within said device; said means being automatically operable by the tape portions which are discharged from said ticker during periods of rest in said device.

2. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device, and means for drawing the tape in a, step by step manner through said device to advance the successive areas of the tape into and out of a predetermined position of rest within said device; said means being automatically operable by the tape portions which are discharged from said ticker during periods of rest in said device; and said means including a movable switch element encountered by said tape portions.

3. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device, means for intermittently engaging the tape at a point beyond said device for drawing the tape in a-step by step manner through said device, said means advancing the successive areas of the tape into and out of a predetermined position of rest within said device, and means for gripping the tape at points before and beyond the projecting'device to hold said areas taut and stationary during periods of rest.

4. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device, means for intermittently engaging the tape at a point beyond said device for drawing the tape in a step by step manner through said device, said means advancing successive areas of the tape into and out of a predetermined position of rest within said device, and means for gripping the tape at points before and beyond the projecting device to hold said areas taut and stationary during periods of rest; and mechanism automatically operable by the tape about to enter said projecting device for rendering said means operative at alternate times.

5. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device, reciprocating means for intermittently engaging the tape at a point beyond said device and drawing the. tape in a step by step manner through said device, said means subjecting successive areas of the tape to periods of rest within said device, and means for automatically gripping the tapeat points before and beyond the projecting device to hold said areas taut during said periods of rest.

6. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device including light interrupting means, means for intermittently engaging the tape at a point beyond said device for drawing successive areas of the tape into a predetermined position of rest within said device, at which position said areas are projected through said light interrupting means, and means for operating the light interrupting means so as to open the same only during periods of rest.

7. In a stock quotation projecting machine, the combination with a stock ticker adapted to dis charge ticker tape as it is marked, of a projecting device including a shutter, means for intermittently engaging the tape at a point beyond said device for drawing successive areas of the tape into a predetermined position of rest within said device, at which position said areas are projected through said shutter, means for operating the shutter so as to open the same only during periods of rest, and mechanism automatically operable by the tape about to enter said projecting device for rendering said means operative at predetermined times.

8. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting 7 through said shutter, means for gripping the tape at points before and beyond the projecting device to hold said areas taut during periods of rest, and

means for operating the shutter to open the same only during such periods of rest.

9. In a stock quotation projecting machine. the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device, and mechanism automatically operable by the tape about to enter said device for (a) intermittently engaging the tape at a point beyond said device for drawing successive areas of the tape into a predetermined rest position of readable duration within said device, and (b) gripping the tape at points before and beyond the project.- ing device to hold said areas taut during said rest periods.

10. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as'it is marked, of a projecting device including a shutter, and mechanism automatically operable by the tape about to enter said device for (a) engaging the tape to draw successive areas thereof into a predetermined rest position of readable duration within said device, (b) gripping the tape at spaced points to hold said areas taut during said rest periods, and operating said shutter so as to open the same during periods of rest and close the same during periods of advance.

11. In a stock quotation projecting machine, the combination with a projecting device, of a stock ticker adapted to discharge ticker tape as it is marked initially to form a loop between said device and said ticker, an intermittently actuated drawing means for drawing'the tape in a step by step manner across the light aperture of said device to advance the successive areas of the tape into and out of a predetermined position of rest at the light aperture'of said device, and a control device adapted to engage the loop formed by said ticker and operatively associated with said drawing means to initiate the operation of said drawing means. 1

12. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of the light aperture of a projecting device, a ticker tape retarding device at the entrance end of said light aperture, a second ticker tape retarding device beyond said light aperture, a tape pulling device for drawing the tape. across said light aperture into and out of positions of rest, said tape retarding devices gripping the tape at points before and beyond the light aperture to hold thetape at the light aperture taut and stationary during periods of rest, and a control device operatively the combination with a stock ticker adapted to discharge ticker tape as it is marked, of the light aperture of a projecting device, a ticker tape retarding device at the entrance end of said light aperture, a second ticker tape retarding device beyond said light aperture, a tape pulling device for drawing the tape across said light aperture into and out of positions of rest, said tape retarding devices gripping the tape at points before and beyond the light aperture behold the tape at the light aperture tautand stationary during periods of rest, and a rotor operatively associated with said ticker, said tape pulling device and said tape retarding devices, said rotor responding to a predetermined actuation of said ticker in turn to actuate said tape pulling device to draw the tape and to actuate said tape retarding devices to release the. tape during the pulling action of. said pulling device.

14. In a stock quotation projecting machine,

.to actuate said tape retarding device and said light interrupting device to release the tape and shut ofi the light when the tape is being pulled across the light aperture by said tape pulling device.

15. The combination with the light aperture of a stock quotation projecting machine, of a tape retarding device at the entrance end to said light aperture, a second tape retarding device beyond said light aperture, a tape pulling device operating alternately with said tape retarding devices to pull tape across said light aperture when said tape retarding devices are inoperative and to be inoperative when said tape retarding devices are operative, a source of light, and a shutter operatively associated with said tape pulling device to shut off the light when said tape pulling device operates.

16. The combination with a light aperture of a stock quotation projecting machine, of a tape retarding device at the entrance end of the light aperture to form a loop in advance of the light aperture when tape is fed thereto, a rotor, a tape pulling device operatively associated with said rotor, a switch operatively associated with the loop formed by the tape, an electric circuit in cluding said switch, a solenoid, a clutch controlled by said solenoid and in turn controlling said rotor, a switch on said rotor, a second electric circuit including the switch on said rotor, a second solenoid, and a third solenoid, said second solenoid being operatively connected to said tape retarding device, a source of light, and a shutter operatively connected with said third solenoid, the loop formed in the tape closing the switch of the first circuit to actuate the clutch to free said rotor, and said rotor in turn rotating the switch of the second circuit into momentary closed position to withdraw said tape retarding device and actuate said shutter.

17. In a stock quotation projecting machine, the combination with a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device having a main light flooded area consisting of a plurality of predetermined secondary light flooded areas, means for drawing the tape in a step by step manner through said device to advance successive areas of the tape into and out of said secondary light flooded areas, one tape area for each secondary light flooded area, and means for arresting said succession of tape areas at-said main light flooded area for a predetermined period of time corresponding to the time required for preparing a subsequent tape area for said main light flooded area, said tape drawing means being automatically operable by the tape areas which are prepared by said ticker during the periods of rest of the succession of tape areas in the main light flooded area of said device.

18. In a stock quotation projecting machine, the combination with'a stock ticker adapted to discharge ticker tape as it is marked, of a projecting device having a main light flooded area consisting of a plurality of predetermined sec;

ondary light flooded areas, means for drawing the tape in a step by step manner through said device to advance successive areas of the tape into and out of said secondary light flooded areas, one tape area for each secondary light flooded area, and means for arresting said succession'of tape areas at said main light flooded area for a predetermined period of time corresponding to the time required for preparing a subsequent tape area for said main light flooded area, said tape drawing means being automatically operable by the tape areas which are prepared by said ticker during the periods of rest of the succession of tape areas in the main light flooded area of said device, and said tape drawing means including a movable switch element encountered by said tape areas.

19. The combination with a projecting device having a definite plurality of predetermined successive secondary light flooded areas forming a main uninterrupted light flooded area, of means for drawing marked tape,, o r the like across said main light flooded area in a step by step manner to advance definite successive areas of the tape into the successive predetermined light flooded areas, one tapearea for each secondary light flooded area, and means for arresting each succession of tape areas at said main uninterrupted light flooded area for a predetermined period of time corresponding to the time required for preparing a subsequent tape area for said main uninterrupted light flooded area, said tape drawing means being automatically operable by the tape areas which are being prepared during the periods of rest of a succession of tape areas in the main light flooded. area of said device.

20. The combination with a projecting device having a definite plurality of predetermined successive secondary light flooded areas forming a main uninterrupted light flooded area, of means for drawing marked tape or the like acrosssaid main light flooded, area in a step by step manner to advance definite successive areas of the tape into the successive predetermined light flooded areas, one tape area for each secondary light flooded area, and means for arresting each succession of tape areas at said main uninterrupted light flooded area for a predetermined period of time corresponding to the time required for preparing a subsequent tape area for said main uninterrupted light flooded area.

21. In combination, a telegraph printing apparatus adapted to eject tape therefrom, a support, a tape puller for moving said tape across the support, tape engaging means operable to grip the tape to arrest its motion when there is a predetermined amount of tape between the printing apparatus and support, and electromagnetic means for releasing the tape after a predetermined length thereof, corresponding to a plural number of characters, has been ejected by the printing apparatus.

22. The combination with a light aperture, of means for controlling the movement of a light transmitting tape across said light aperture including a tape puller, actuating means for said tape puller, a device for anchoring said actuating means against movement, means including an electromagnet for controlling said device, an electric circuit including an electric switch for controlling said electromagnet, a movable member for controlling said switch responsive to variations in a loop formed in the tape anterior to said light aperture, and a spring pressed lever 1 to form a loop therein to facilitate actuation 01' said arm in turn to control said electric swit and thereby said electromagnet.

23. In combination, a telegraph printing apparatus adapted to eject tape therefrom, a sup-- port, a tape puller for moving the tape across said support as it is ejected, a control for said tape puller including an anchoring device, an electro-' magnet for actuating said anchoring device, an electric circuit for said electromagnet including an electric switch, a movable member 'operatively associated with the tape and switch and responsive to deflections in the tape to control said switch, and an arm cooperating with the tape in the formation of deflections in the tape to dissipate the vibrations transmitted thereto by the printing apparatus and also cooperating with the tape in' the formation of a loop when the ejection of tape from said printing apparatus is resumed after a period or rest to facilitate actuation of said movable member in turn to control said electric switch and thereby said electromagnet.

. 24. In. combination, a telegraph printing apparatus adapted to eject tape therefrom, a support, a tape puller for moving the tape across said support as it is ejected, a magnetic control for said tape puller including an electric circuit and an electric switch, a movable member operatively associated with the electric switch and responsive to deflections in the tape to control the opening and closing of said switch, and an arm cooperating with the tape to aid in ironing out the vibra-.

tions transmitted thereto by the printing apparatus and cooperating with the tape in the formation of a loop between said printing apparatus and said support when the ejection of tape from said printing apparatus is resumed after a period of rest to facilitate actuation 01' said movable member in turn to control said electric switch and thereby said' electric circuit.

- AUGUST D. EITZEN.

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