US2091758A - Tens carrying means - Google Patents

Description

Aug. 31, 1937. H. B. HOGFORS TENS CARRYING MEANS File d June 15, 1935 3 Sheets-Sheet l flaws 21251-7} aver/V6 67;

flfforn 1 Aug. 31, 1937. H. F. B. HOGFORS 2,091,758

TENS CAR RYING MEANS Filed June 15, 1953 I5 Sheets-Shoot 2 I 1; van/for: f it: flairj'w? Zr' nr 6153 418 a jigy Aug; 31, H. F. B. HCGFORS TENS CARRYING MEANS Filed June 15, 1933 3 Sheets-Sheet 3 L Van to r,

Patented Aug. 31, 1937 UNITED STATES PATENT OFFICE Application June 15, 1933, Serial No. 675,989 In Sweden July 30, 1932 3 Claims.

This invention relates to a tens carrying means for calculating machines and cash registers, in which the numeral wheels are not in permanent engagement with the driving members, which ro- 5 tate the numeral wheels and efiect the calculat- In calculating machines the tens carrying generally is effected by means of carrying members, which have a movement of ten pitches, the tenth 10 being utilized only when a ten is to be carried. The carrying takes place while the counting wheels and the racks are connected with each other. In other instances the setting racks or segments move nine pitches, during which time the 15 tens carrying is being prepared, in order to be accomplished after the numeral wheels and the carrying members have been disengaged from each other (see U. S. Patent No. 1,508,531). The former system is the most common in adding 20 machines, and the latter is used practically without any exception in cash registers. However, this has great drawbacks. The former system cannot be used" in cash registers, the cash registers being provided with amount indicating 25 wheels, the movement of which from to 9 takes place by means of the setting racks or segments, which thus are not allowed to move more than nine pitches, as no tens carrying is to take place on the amount indicating wheels.

30 This invention relates to tens carrying means,

in which the carrying takes place, while the numeral wheels are in engagement with the setting members (racks or segments) which actuate the same, and in which these members do not move 35 more than nine pitches so that the device may also be used in cash registers.

The invention is illustrated by way of example in the accompanying drawings.

Figure 1 is a top view of a pair of numeral 40 wheels with associated tens releasing and tens carrying means.

Figure 2 is a section taken on line A-A of Figure 1.

Figures 3 and 4 show details of the totalizer 45 when in a non-engaging position and working position respectively, and

Figure 5 is part of the setting rack with the tens rack bar.

The release slide I (Figs. 1-4) and the frame 50 plate 2 which is secured to a beam 22 rigidly connected with the machine consist of plates located side by side. The release slide I is slidably secured to the frame plate 2 by a bolt 3, which moves in a slot 4 of the frame plate. Slide I is 5 provided with an angularly bent lip 5, which passes through the recess 6 0f the frame plate 2, thus preventing the slide and frame plate from being separated, A spring 8 keeps the hook 5 pressed against the upper edge of the opening 6.

On the numeral wheel 9 there is provided a 5 tooth l0 formed with an oblique surface II. On the turning of the wheel 9 in the direction of the arrow (see Fig. 4), tooth Ill passes the small end of pin 3, and pushes the latter to the right (in Fig. 3) in the slot 4 until the hook 5 slips 10 over a sharp edge I2 in the opening 6. On accountof the spring 8 the hook 5 is pressed into the catch I3 where it is retained by the spring until the wheel returns into its non-operative position and the shaft I4 engages a cam I5 of the release slide I, whereby the latter is pressed down and returned to the initial position again by the spring 8.

The tens rack bar I6 (Figure 5) is slidably secured to the setting rack 23 by pins 26 and 21, which engage corresponding slots 28 of the tens rack bar I6, and is pressed upwardly by a spring I9. The length of the slots 28 corresponds to the distance between the centers of two adjacent teeth. A carrying catch I8 is pivotally secured on a shoulder 29 of the tens rack bar I6 and pressed to the left by means of a spring 25. Moreover the said catch is provided with a pin 2| and a rectangularly bent lip 3|]. The pin 2I is secured to the catch [8 in such a manner that when the 30 tens rack bar I6 is in its upward or normal position, pin 2| lies in the same horizontal plane (Figs. 2 and 3) in which the axis of the bolt 3 of the release slide I moves. With this arrangement, pin 2I is shifted to the right by pin 3 when the latter is shifted to the right by tooth I0.

When a ten is to be carried the release slide I is pushed to the right by the wheel 9, so that the hook 5 slips over the sharp edge I2 of the recess 6 and is pressed up into the notch I3 by the spring 8. If in the releasing moment the set ting rack 23 is not moving (i. e, if no keys are depressed in the corresponding key bank) the bolt 3 pushes the pin 2I to the right, as shown in Fig. 2, where it is retained, until the totalizer returns to its non-operative position (see Fig. 3)

(is pushed to the left) and the totalizer shaft I4 returns the release slide I to the rest position in the manner described above. However, if one of the nine keys of the corresponding key bank (not shown) is depressed, the setting rack 23 will move from the position shown in Fig. 3 a number of pitches upward, corresponding to the numeral, and will be moved downward again after the totalizer has been brought into a working position. For instance, if the nine key is pressed, the rack 23 (with the rack IS in the position shown in Fig. 5) will be moved upwardly nine spaces until the lowermost tooth on rack I6 is opposite the shaft l4. Before the rack i6 is lowered, the shaft I4 is shifted toward the racks 23 to bring the toothed wheels on shaft I4 into mesh with the teeth on racks I6. During the downward movement of the rack the corresponding numeral wheel 9 is turned. If during this turning a ten is released the release slide is moved to the right, as described above, where it remains.

If the release slide is moved to the right before rack 23 reaches its lowermost (rest) position, the pin 2| engages the pin 3 (as rack 23 approaches its lowermost position) and is displaced to the right by sliding over the pin 3. The displacement of pin 2| causes catch I8 to shift toward the right against the action of spring 25 to the position shown in Fig. 2.

If a key in one row is not pressed the corresponding rack 23 is not raised. However, if a ten is to be transferred to the corresponding numeral wheel 9 of this rack, the slide I of the next lower order is released and the pin 3 carried thereby will shift the pin 2| and the catch 8 of the slide in question to the right to the position shown in Fig. 2. Thus, regardless of Whether the rack 23 is raised or not, its associated catch |8 will be shifted if a ten is to be transferred to its associated numeral wheel.

With catch l8 shifted to the position shown in Fig. 2, the lip 33 is in a position whereby it may be moved downwardly by a nose 31, as hereinafter described, into slot 60 and shift rack l6 downwardly relative to rack 23 to the position shown in Fig. 4.

The tens carrying means is adapted to work in the time between the time after the return of 40 the setting racks 23 to their lowermost or rest position and before the disconnecting of the totalizer from the racks l3 and their movement into a non-operative position. For this purpose a tens actuator 3| (Fig. 2) is provided for each 45 numeral wheel 9 except for the wheel of the lowest order, the said tens actuator being guided for instance vertically by shafts 32 and 33 and laterally by a beam 35 provided with corresponding grooves 34, the said beam being rigidly connected 50 with the frame of the machine. Each tens actuator 3| is provided with a nose 37 adapted to be rotated about a pin 36 and which by means of a spring 33 is pressed against a catch, pin or the like 39 secured on the tens carrier. This nose lies 55 with the lower edge 40 of its projection over the upper edge of the lip 3!] on the carrying catch |8 when the latter is shifted to the right, as shown in Fig. 2. If during the downward movement of the setting rack 23 the lip 33 is moved 60 to the right while above nose 31, the latter is also 7 each other, so that at the turning of the shaft 33 in the direction of the arrow the shoulders successively strike against the rotatable roller 49 secured on each tens actuator, whereupon the tens actuators 3| are successively moved downward. The distance between the shoulders 45, 46,

41, 48 is so chosen that a tens actuator does not function until its neighbour of a lower order has made its whole stroke. If a ten is released and the slide shifted to displace member I8, the lip 33 will be engaged by the nose 3? and on the downward movement of the tens carrier 3| the rack bar I6 will be moved down against the action of spring IS. The movement of the tens actuator 3| is so actuated by the cam disks that the tens rack bar I3 and consequently also the numeral wheel 9 receives a stroke, which is equal to the distance between adjacent teeth. In this lower position the tens rack bars l6 are held by the tens actuators 3| until the totalizer has returned to non-engaging position. When the tens actuators move upward again, the totalizer rack bars i6 are pushed upward by the springs l9, and the carrying catches I3 are moved to the left by the springs 25 to a non-operative position again. It is clear that, if at the downward movement of a rack bar I6 a ten on the numeral wheel of the immediately higher order would then be released, this can take place without anything further, because the corresponding tens actuator does not begin its work until the preceding one is ready. As the tens rack bar l6 is held in its upper position only by the spring l9, there is, in order to prevent a failing of the upward pushing, for instance in case of a spring rupture, also an arrangement to give the tens rack bar I3 a positive motion. In accordance with this arrangement the tens actuator 3| is provided with a tongue 50 the upper edge of which lies under the lower edge of the lip 30 of the release catch l8, by which the tens actuator brings along the tens rack bar It on its upward movement, if for some reason the spring l9 would fail. Moreover the cam disks 4|, 42, 43, 44 are each provided with a lug which engages the lower edge of the tens carrier 3| adjacent the roller 49, and thus at the return of the cam disks 4|, 42, 43 and 44 to their initial position positively moves the tens actuators upward, if for some reason the springs 3 which generally pull the tens actuators 3| upward, would not function.

By means of the arm 52, the bar 53 and the link 54 with the rollers 55 and 56, which is pivotable about the shaft 62, the shaft 33 is given a rocking motion from the cam disks 58 and 59 secured on the main shaft 51 of the machine.

In order to prevent a possible snapping out of the lip 33 of the grasp of the nose 3'! the arrangement has been made that the catch H3 is guided by the setting rack 23, for instance thereby that the lip 30 is bent backward, and the setting rack 23 is provided with a slot 6|) corresponding to the motion of the lip 30 (Fig. 5), the said slot being so narrow that it does not allow any lateral movement of the lip.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a machine of the character described, a setting rack, a toothed totalizer actuating rack longitudinally slidably mounted on said setting rack, a totalizer shaft, a toothed numeral wheel on said shaft adapted to be driven by said totalizer actuating rack, a numeral wheel of next lower order on said shaft provided with a tens cam, said shaft being laterally shiftable to bring the toothed numeral wheel into mesh with said actuating rack, means for locking said actuating rack at one limit of its travel on said setting rack, means actuated. by said tens cam for releasing said locking means, a tens actuator and a spring-actuated pawl mounted on the tens actuator for engaging the actuating rack locking means when in released position for sliding the actuating rack relative to the setting rack.

2. In a machine of the character described, a setting rack, a toothed totalizer actuating rack longitudinally slidably mounted on said setting rack, a totalizer shaft, a toothed numeral wheel on said shaft adapted to be driven by said totalizer actuating rack, a numeral Wheel of next lower order on said shaft provided with a tens cam, said shaft being laterally shiftable to bring the toothed numeral wheel into mesh with said actuating rack, means for locking said actuating rack at one limit of its travel on said setting rack, resilient means urging said actuating rack to its normal position, means actuated by said tens cam for releasing said locking means, a tens actuator, and a spring-actuated pawl mounted on the tens actuator for engaging the actuating rack locking means when in released position for sliding the actuating rack relative to the setting rack.

3. In a device of the character described, a setting rack, a totalizer actuating rack slidably mounted thereon, means for locking the actuating rack at one limit of travel on said setting rack, a tens actuator, means operable when a ten is to be carried for disengaging said locking means and shifting it into a position to engage the tens actuator, and a spring-pressed pawl on said tens actuator permitting movement of said locking means past the same and operable for imparting a further movement to the locking means and actuating rack upon operation of the tens actuator.

HANS FREDRIK BIRGER HfjGFORS.

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