US2022658A - Stock quotation projecting machine - Google Patents

Description

'Dec. 3, 1935. A, D, fi- N 2,022,658

STOCK QUOTATION PROJEOTING MACHINE Original Filed Sept. '7, 1929 2 Sheets-Sheet l INVENTOR ATTORNEY g Dec. 3, 1935.

A. D. EITZEN STOCK QUOTATION PROJECTING MACHINE 2 Sheets-Sheet 2 Original Filed Sept. 7, 1929 z'tm, BY 4(0 ATTORNEY Patented Dec. 3, 1935 UNITED STATES PATENT OFFICE 2,022,658 I STOCK QUOTATION PROJECTING MACHINE Application September 7, 1929, Serial No. 391,055

Renewed March 5, 1935 4 Claims.

This invention relates to stock quotation pro- J'ecting machines in general and more especially to devices for controlling the feed of the ticker tape through the projecting machine. 1

Among the objects of the present invention it is aimed to provide an improved device for controlling the feed of the ticker tape through the projecting machine. 7

More particularly it is an object of the present invention to provide a tape feeding device operatively connected to be driven by an electric motor and mechanical means for stalling the electric motor whenever the ticker is arrested, and in turn for causing the motor to operate when the ticker operates.

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 drawings in which Figure 1 is a side elevation of one embodiment of a stock quotation projecting machine made according to the present invention;

Fig. 2 is a plan view of the embodiment illustrated in Fig. 1; c

Fig. 3 is a section on the line 3-3 of Fig. 2;

Fig. 4 is a side elevation of another embodiment of a stock quotation projecting machine made according to the present invention; and

Fig. 5 is a plan view of the embodiment illustrated in Fig. 4.

According to the embodiment illustrated in Figs. 1, 2, and 3, a ticker I is provided from which the tape T issues and passes across the discharge platform 2 and then under the finger 3 of the arm 4 fixed on the shaft 5 extending through the plate 3 secured to the side of the lamp housing 1 of the projector 8. From the finger 3, the tape T passes across the light aperture formed in the extension 9 of the lamp housing I beneath the projecting lens l0. From the extension 9, the tape T passes across the roller H to the tape pulling roller l2 mounted on the shaft 13 fixed in the bracket l4 secured to the side of the lamp housing I. The tape T is maintained in frictional engagement with the tape pulling roller l2 by the friction roller l 5 rotatably mounted on the end of the arm l6 pivotally mounted at H to the bracket extension I8 of the bracket l4, the arm l6 being provided with a spring I! for urging the roller l5 into intimate engagement with the tape T to press it into engagement with the tape pulling roller I2.

The shaft I3 is provided with a worm wheel 20 in mesh with the worm 2| on the shaft 22 which has mounted thereon the worm wheel 23 in mesh with the worm 24 and the shaft 25 of the electric motor 26. The shaft 25 has secured thereon the gear 21 in mesh with the pinion 287on the shaft 29 journaled in the bearings 30 secured to the 5 side of the housing 3| mounted on the platform 32 secured to the side of the lamp housing I. The shaft 29 has fixed thereon a fan preferably having two blades 33 and 34. The shaft 5 has fixed thereon a finger 35 which is adapted to extend into the path of movement of the fan blades 33 and 34 when the finger 3 is raised by the tape T. This rise of the finger 3 occurs when the ticker comes to rest, thus ceasing further to discharge any tape, and the tape pulling roller I2 continues to feed the'tape across the light aperture of the projector until the slack in the tape T between the discharge platform 2 and the abutment 36 at the supply end of the extension 9 is taken up.

The motor 26 in the present instance is sufliciently sensitive to come to rest or be stalled by the load added when the finger 35 passes into the path of movement of the blades 33 and 34 without overheating, and, 'on the other hand, exercise an advancing tension on the blades 33 and 34 constituting a butterfly so that the motor will immediately start to rotate when the finger is raised and pick up speed, and at the same time gradually increase the feed of the tape across the light aperture of the extension 9 until the 3 predetermined speed of the motor and consequently the predetermined feed of the tape has been reached. On the other hand, when the ticker comes to rest and the tape pulling roller [2 continues in its operation to take up the slack 35 in the tape T between the discharge platform 2 and the abutment 36, this rise of the finger 3 will be sufficientlyslow as compared to the revolutions per secondof the blades 33 and 34 that the blades 33 and 34 will initially strike the edge of 40 the finger .35 several times thereby gradually retarding the movement of the motor 26 and in turn the movement of the tape pulling roller 12 before the finger 35 absolutely obstructs the further rotation of the blades 33 and 34, and consequently the further rotation of the motor 26 and tape pulling roller l2. The gear 21 and pinion 23 aforesaid. thus constitute a train of gears for transmitting motion from the'shaft 29 to the fan formed by the blades 33 and 34, and also form a load increasing device when cooperating with the finger 35.

Preferably the fan blades 33 and 34 are yieldably connected to the shaft 29 by means of a. tortional spring 31 so that after the blades 33 and 34 come to rest by engagement with the finger 35, the shaft 29 will still continue to rotate against the tension of the spring 31 and not come to rest until the spring 31 has been tightly wound to resist further rotation. In this way, the grad- 'ual retardation of the motor 26 is effected not only by the initial slippage of the blades 33 and 34 produced by initially striking the finger 35 but also by the spring 31 gradually retarding the rotation of the shaft 29 as it is wound up when the blades 33 and 34 are brought to rest.

Furthermore by means of the foregoing load increasing device, the motor 26 will be brought to rest without any switching device disposed adjacent to the loop forming arm 4 and consequently the fire hazard present with such switches is thus absolutely avoided. The arm 43 disposed as it is between the ticker and projecting machine assists materially in dissipating the vibrations transmitted to the tape by the ticker so that the tape portion in the light aperture will be substantially free of any vibrations.

When the tape T passes over the light aperture 38, see Fig. 3, the same is maintained in engagement with the upper face of the lens 39 at the light aperture 38 by means of the bracket 40 which has two end plates 4| and 42 each provided with three contact projectors 43, 44, and 45, the projection 44 being disposed about midway between the projections 43 and 45. In this way the lower edges of the sides 46 and 41 and the projections 44 of the end plates 4| and 42 alone engage the tape and clear the two rows of characters. It will be noted, see Fig. 2, that the finger 3 is also provided with three contact points 48, 49, and 50 spaced from one another to clear the two rows of characters printed on the tape T.

In the embodiment illustrated in Figs. 4 and 5, the tape pulling roller l2 there illustrated is disposed at the supply end of the extension 9' instead of at the discharge end. In this way it has been found that when the tape passes from the tape pulling roller l2 at the supply end of the extension 9 down to the rewind reel 5|, the tape pulling roller l2, which is really a tape advancing roller in this case, cooperates with the rewind reel 5| to maintain the tape smooth and free from vibrations when passing the light aperture formed on the extension 9' without the aid of the bracket 40 illustrated in the embodiment of Figs. 1 to 3. The rewind reel 5| in this case is preferably fixed on a shaft 52 provided with a pulley 53 which is connected by a spring belt 54 with the pulley 55 and the shaft 56 of the motor 51, which motor 51 preferably operates continuously, in which case the spring belt 54 will slip relative to the pulley 53 when the rewind reel 5| is caused to stop due to the failure of any further supply of the tape T when the ticker comes to rest.

In the embodiment of Figs. 4 and 5, the drive means or the actuating means for the tape advancing roller l2 will of course also be altered so as to operatively connect the worm wheel 58 with the worm 59 disposed on the supply end of the extension 9', which worm 59 meshes with the worm wheel 60 on the shaft 6| mounted in the bracket 62 secured to the extension 9' on the supply end of the extension 9. The-shaft 6| has fixed thereon the tape advancing roller l2. The worm 58, in the present instance, is mounted in the housing 63 and operatively connected with the motor 64 similar to the manner in which the worm wheel 23 is mounted and operatively corinected to the motor 26, and need therefore not be again described.

It is obvious that various changes and modifications may be made to the details of construction without departing from the general spirit 5 of the invention as set forth in the appended claims.

I claim:

1. In a device for pulling tape through a predetermined area in a smooth comparatively taut l0 condition, the combination with a tape pulling sheave in engagement with the tape at the posterior end of said area, of an electric motor maintained in circuit for a predetermined period of operation, means for drivingly connecting said 15 sheave to said motor, a shaft positively driven by said motor, a. butterfly, a yieldable member for drivingly connecting said butterfly to said shaft, and a lever sensitive to a deflection of the tape resting on the tape at the anterior end of said 20 area and clear of saidarea and operable to be deflected by said tape to engage said butterfly to bring it to'rest in turn to cause said motor to stall while still maintained in circuit, the spring connection between said butterfly and 25 said shaft permitting the gradual increase of the load on said motor when said butterfly is brought to rest to protect, the tape from the jar that might result if the stop of the tape pulling sheave were sudden due to the sudden stop of the motor. 30

2. In a device for pulling tape through a predetermined area in a smooth comparatively taut condition, the combination with a tape pulling sheave in engagement with the tape at the posterior end of said area, of an electric motor at 35 the anterior end of said area remote from said sheave, an elongated shaft extending from the anterior to the posterior end of said area, a train of gears operatively connecting the anterior end of said shaft with said motor, a second train of 40 gears operatively connecting the posterior end of said shaft with said sheave, a second shaft operatively connected to said first train of gears, a. butterfly, a. spring drivingly connecting said butterfly with said second shaft, and a lever pivotal 45 1y mounted at the anterior end of said area sensitive to a deflection of the tape resting on the tape at the anterior end of said area and clear of said area and operable to be deflected by said tape to engage said butterfly to bring it to rest in 50 turn to cause said motor to stall while still maintained in circuit, the spring connection between said butterfly and said second shaft'permitting the gradual increase of the load on said motor when said butterfly is stopped to protect the tape from the jar that might result if the tape pulling sheave were suddenly brought to rest due to the sudden arrest of the motor.

3. In a device for pulling tape through a predetermined area, the combination with a tape m pulling sheave in engagement with the tape at the posterior end of said area, of an electric motor, means for drivingly connecting said sheave to said motor, a shaft positively driven by said motor, a butterfly, a yieldable device for drivingly connecting said butterfly to said shaft, and a pivotally mounted lever sensitive to a deflection of the tape having one arm resting on the tape and operable to be deflected in turn to cause its other arm to engage said butterfly to bring it 70 to rest and in turn to cause said motor to stall while still maintained in circuit, said yieldable device permitting the gradual increaseof the load on said motor when said butterfly is brought to rest to thereby protect the tape. 75

4. In a device for pulling tape through a pre-- determined area, the combination with a tape pulling sheave in engagement with the tape at the posterior end of said area, of an electric motor, means for drivingly connecting said sheave to said motor, a shaft positively driven by said motor, an interrupter, a yieldable device for drivingly connecting said interrupter to said shaft, and means responsive to deflections in the tape in turn to obstruct the movement of said interrupter to bring it to rest and in turn to cause said'motor to stall while still maintained in circuit, said yieldable device permitting the gradual increase of the load on said motor when said interrupter is brought to rest to thereby protect the tape.

AUGUST D. EITZEN.

Images