US1189288A

US1189288A - Setting and adjusting mechanism for calculating-machines.

Info

Publication number: US1189288A
Application number: US64142711A
Authority: US
Inventors: Alexander Rechnitzer
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-07-31
Filing date: 1911-07-31
Publication date: 1916-07-04
Anticipated expiration: 1933-07-04

Description

A.. RECHNITZER.

M FOR CALCULATHIG MACHINES.

APPLICATION FILED JULY 31,1911.

MECHANIC SETTiNG AND ADJUSTING Patented July 4, 1916.

II SHEET$SHET l A. RECHNITZER. SETTING AND ADiUSTING MECHANISM FOR CALCULATING MACHINES.

APPLICATION FILED JULY31.19II.

Patented July 4, 1916.

11 SHEETS-SHEET 2.

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SETTING AND ADJUSTING MECHANISM FOR CALCULATING MACHINES.

APPLICATION FILEI) JULY 31, I9II.

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A. RECHNITZER. SETTING AND ADJUSTING MECHANISM FOR CALCULATING MACHINES.

APPLICATIOP FLED JULY 3!.1911.

Patented July 4, 1916 H SHEETS-SHEET la-m 1.01 .710:

H ywwuA A. RECHNITZER.

I SETTING AND Amugme MECHANISM FOR CALCULATING MACHINES. 1,189,288.

' APPLICATION FILED JULY 3 .191].

Patented July 4, 1916. 1| snzzrs-susn 5.

1' 71 r errtor A. RECHNITZER. SETTING AND ADJUSTING MECHANISM FOR CALCULATING MACHINES.

. APPLICATION FILED JULY 31.15am. 1 ,1 89,288. Patented July 1, 1916.

ll SHEETS SHEET 6.

A. RECHNITZER.

SETTING AND ADJUSTING MECHANISM FOR CALCULATING MACHINES.

APPLICATION FILED JULY 3I| 19H.

A. RECHNITZER.

SETTING AND ADJUSTING MECHANISM FOR CALCULATING MACHINES.

APPLICATION FILED JULY 3 I9II.

Patented July 4,1916.

I I SHEETSSHEET 8.

A. RECHNITZER. SETTING AND ADJUSTING MECHANISM FOR CALCULATING MACHINES.

APPLICATION FILED JULY 3h 191]. 1,189,288.

Patented J my 4, 1916.

v I I SHEETS-SHEET 9.

A. RECHNITZER.

v SETTING AND ADJUSTING MECHANISM FOR CALCULATING MACHINES. 1,189,288.

APPLICATION FILED JULY 3I|I91l.

Patented Jul 4, 1916.

II SHEETS-SHEET I0- A. RECHNITZER.

SETTING AND ADJUSTING MECHANISM FOR CALCULATING MACHINES.

APPLICATION FILED JULY 31.1911.

1 ,1 89,288. Patented July 4, 1916.

II SHEETESHEET I I- UNITED STATES PATENT OFFICE.

ALEXANDIFR RECHNITZER, OF VIENNA, AUSTRIA-HUNGARY.

SETTING AND ADJUSTING MECHANISI MI FOR CALCULATING-MACHINES.

To all whom it may concern:

Be it known that I, ALEXANDER RECH- NITZEB, manager of the Autarit-Gesellschaft m. b. H., a subject of the Emperor of Austria-Hungary, residing at Vienna, Austria Hungary, have invented a new and useful Improvement in Setting and Adjusting Mechanism for Calculating-Machines, of which the following is a specification.

The present invention relates to a new setting and adjusting mechanism for calculating machines, that'is, a mechanismprovided with means for setting up a figure, and

adapted to transfer-the figure set up once or several times to a suitable counting gear or accumulator.

.The invention is a part of a calculating machine, which forms the subject of a later application filed July 26, 1912, Ser. No. 711,622. But, it can be used in any calculating machine, for instance in that forming the subject matter of.my prior application filed February 21, 1910, Ser. No. 515,193, or

- it may also be used in any other non-auto:

matic calculating machine.

The objects of the improvedconstruction are to build a durable and easily operated mechanism for transferring the figures set up, to the counting gear.

Another object of the invention is to construct transferring and setting means which can be adjusted automatically according to the figure which has appeared in any suitable manner in the counting gear and which figure shall be retained in the counting. gear while it is transferred to the setting means. Another object is to construct the transferringmechanism and its setting means in such manner that a new figure can be set up by the operator on the setting means, .While the transferring means may still be, once or repeatedly, transferring another figure which had formerly been set up uponthe setting means.

Specificati'on of Letters Patent.

Patented July 4, 1916.

grams to illustrate the principle of the working of the transferring means to'the counter.

As the object of the present invention is only to provide a calculating machine setting mechanism which can be substituted for the setting mechanism of almost any other known calculating machine, as much only of the other "mechanisms of such machines has been shown as is necessary to explain the driving and adjusting connections between the setting mechanism and the other machine. Most of those machines havea hand or motor driven main shaft from which all other movements are derived. Such ashaft 3 is shown (Figs. 1, 3, 4, 11-14), by the rotation of which the feed gear is operated to transfer a figure set up inthe bank of keys 17 (Fig. 1) to a counting gear or accumulator, Which may be formed by a set of numeral wheels 1 (Fig. 1), between which any known carrying mechanism maybe arranged and which may be drivenby means of gears 1, 2, through a gear 52, which belongs to the setting mechanism presently to be described, and which therefore must be turned different amounts, depending upon thefigure set up in the keys 17.

It is of advantage that the setting mechanism be so constructed as to allow it to be bodily moved as a whole along the counting gear. quickly he slid to different digits of the counting gear, which is of advantage in Then the setting mechanism can.

many operations, especially in multiplications and division. mechanism is constructed, independently of the other machine, with its own frame, formed between two lateral plates 9 and 10 (Figs. 3 and .4). The frame is slidably mounted upon four

rods

4, 5, 6 and 7, (Fig. 2, also Figs. 1, 3 and 4) through the medium of which rods the necessary movements are also imparted to the different mechanisms,

Therefore the setting 1 ed as a main girder thekey bridge formed from a piece of sheet metal (Figs. 1, 5, 6 and 7). The key bridge carries in stamped outslots 16 ninetsuitable parts 17, bent to form keys and covered at the upper ends with caps 18 carrying Figs. 1-9 having the said figures printed thereon in accordance with their value. Along the keys 17 is mounted a slide 19 provided with nine slots 20 (Fig. With each of these slots can engage the corresponding pin 21 of the keys, and the pins are generally in the positions shown in Fig. 8. When any one of the keys is depressed, the slide 19, situated 'under the same, is pushed to the left in Figs. 7 and 8, as the pin 21, moving down in the slot 20, must push the corresponding slide to the left. (See dotted lines, Fig. 1). In this way, a ratchet tooth 22 provided on the 'slide, shown also in Fig. 8, is moved out of the path of the teeth of a ratchet wheel 23 secured to a spindle 24. This tooth 22 forms part of an oscillating member 310 pivoted to the slide 19 '(Fig. 2) as hereinafter more fully-described. Thereby the tooth 22 is adapted to move longitudinally with the said slide and to oscillate in a plane at -ri ht angles thereto. The spindle 24 is ex ose to the tension of a spring 25 (Fig. 6) whlch pulls down a toothedrack 26 adapted to rotate the spindle 24 by means of a pinion 27 thereon. To the spindle 24 is secured a toothed wheel 28 which, by means of a toothed wheel 29 rotates the resetting spindle 30 arranged under the heads of the keys and provided with pins 31. When the spindle 30 is rotated a pin 31 will press the pin 32 of the depressed key 17 and raisethe key again. into normal position. .The pins 31 are secured tothe 'resettingspindle 30 in such a way that, according to the value of the key, they will bring the depressed key back-into the position of rest earlier or later, that is tosay, after a greater or less rotation of the.

spindles

24 or 30. The spindle 24 will accordingly be locked after a greater or less rotation, for when the depressed key 17 moves back, the pin 21 of the said key, slid- I ing upward-in the slot 20, will again force the slide 19 to the right, and will also bring the ratchet tooth 22 into operative position relatively to the ratchet wheel 23, whereby the spindle 24 will be locked. The mechanism thus described shows clearly that, according to the key which is depressed, the; spindle 24 will make a greater or less rotation, and then be locked. On the spindle 24 is mounted a cylinder 33 which has a groove '34. v With the said groove engages a pin 35 (Fig. 9) and Figs. 21 to 29 'of a doublearmed lever 36 (dot pointed in F igs. 21-29) 7 which is pivotallysecured to a sliding part 38 by means of a pivot pin 37 (Figs. 5, 7, 9

and'lO). The otherarm '39 ofthedouble pivoted by a pivot' pin 42 to an arm 43. 1

(Best shown in Fig. 10; also in Fig. 9, and shown in full lines in the diagrams Figs. 21 to 29.) The arm 43' is screwed fast to a. square oscillating spindle 44 journaled in

bearings

45 and 46 in the lateral plates 9 and 10 (Figs. 3 and 4). When the spindle 44 is rocked. from the main spindle, in the manner hereinafter described, the oscillation of the spindle 44 will, by means of the

rods

43, 41, 39, bring about a movement of the sliding part 38 to a different extent, which extent from left to right of Figs. 9, 10 and 21 to 29, varies according to the position of the double-armed lever 36 during such oscillation. This position of the lever 36 will not change during a movement of the sliding part 38 as the grooved cylinder 33 1 a'nd2) supported in the two

rods

12 and 14 already referred to, is, in its turn, slid able in a horizontal direction, that is to say, parallel'to the spindle 24. As shown in Fig.

1, the pin 40 forming a fulcrum is situated,

in the position of rest of the lever '36, in a recess of the square spindle 44, so that the said fulcrum coincides with the center of rotation of the spindle 44, see diagram F ig. 21 and whenthe spindle 44 is rotated, no movement of the double-armed lever 36 is produced see diagrams Figs. 22 and 23. The

farther the pivot- 40 is moved away from the center of rotation of the spindle 44 however, owingto the action of the grooved cylinder 33, the greater. will be the movement given to the sliding part 38 with the same oscillation of the spindle 44. In the diagrams, i gs. 21 to 29 are the depths to which the pivot 40 will fall upon the depression of any of the keys'1 9 and the length of way it will consequently be moved during an oscillation, indicated by dotted lines. If, for instance, a. key '6 be depressed, the double armed lever 36. will first be moved in described manner, by the rotation of the grooved cylinder 33. into a position illustrated in the diagram, Fig. 24. Thereafter,

38 will be slid'to the right (diagrams 25,

26) and back to the left along the dotted line marked 6 on the scale of the diathe same movements if a key grams. The diagrams 27 to 29 illustrate 9 is depressed. Each of the said sliding parts 38 carries corresponding toothed racks 48 and a from one and the same bar 44 oscillated in a.

suitable manner. As the resetting spindle 30 makes a difi'erent rotation according to thevalue of the figure set, the wheel 53 secured to the spindle 30, Fig. 1, and indicating the key struck, shows the figure set at the time.

The oscillation of. the bar 44 is effected at each rotation of the main spindle 3 in the following manner, reference being had to Fig. 3. On the end of the main spindle 3 is mounted a crank pin 60 to which is pivoted a lever 61, which is therefore oscillated at each revolution of the main spindle 3, to the right and to the left in Fig. 3, and

at the same time oscillates to a corresponding extent the lever 62 and the grooved rod As already stated, the rod 5 (Fig. 1)

is one of the rods on which the setting mechanism is slidably mounted in the casing of the machine. An arm 63 mounted on the setting mechanism slides with the same, and

is adjustably mounted on the spindle 5 by means of a spline and groove, so that it will i the spindle 4 will be oscillated in a given manner,- namely either to the right or left of Figs. 3 and 1]., and then into the position of rest, by means of the following mechanism: Upon the main spindle 3 there is .guided by nieans-of a spline and groove asliding sleeve 66 (Figs. 11 and 12), carryingtwo cam disks 67 and 68 at one of its ends. The disks travel between

double arms

69 and 70. Each of these two double arms "carries at both ends a roller 71, 72, 73 and 74 which can slide on the disks. Roller 74 .is covered by the roller 71, in" Fig. -11. Ac-

left of 12, the right or left pair of rollers 73, 74 or 71, 72 will cooperate with the there is produced a movement to the right and back, or to the left and back, which is.

transmitted by a projection 77 and lever 78 to the grooved spindle 4. To the grooved spindle 4 is secured (Fig. 3) a cast part? 9 connected to the setting mechanism which part will be rotated by the spindle 4 (Figs. 3 and 15) and will be oscillated at each revolution of the main spindle either to the -right or to the left, and then back to the position of rest.

On the cast part 79 is mounted a drum segment 80 provided with a camgroove 81 which moves a lever 82 at its point of engagement 83, to the right and left of Fig. 15, about its fulcrum 85, that is to say the lever 85 will be oscillated either to the right or to the left, according as the segment 80 is turned in one or the other direction. The lever 82 in its turn and by means of the pin 87 and groove 88 moves the spindle 90, on which are mounted the toothed wheels 50 (Fig. 1) so that the latter are moved to the right or to the left, and thus brought into engagement either with the upper,

'2, or with the bottom toothed rack 49 arranged at the left, Fig. 2. The toothed wheels 50 will therefore be given a suitable rotation in one or the other direction by the setting mechanism already described, by means of the

toothed rack

48 or 49, and the toothed wheels 51, connected to the toothed wheels 50 by means of a sleeve, will therefore transmit the corresponding rotations by means of toothed wheels 52 to-the counting gear, either in accordance with addition or with subtraction. It will thus be clear that the question whether addition or subtraction is performed, is determined in the present construction by the segment 80 being oscillated either in one or in the other direction, which is again determined by the corresponding oscillations of the levers 70 or 69 (Fig. 11) which are oscillated in a different manner according as the sleeve 66 with the two cams 67, 68, is moved to the right or to the left. Durmg the second half of the revolution of the main spindle 3, the spindle 90 with the toothed wheels 50 is brought back to the initial position, that is to say, out of engagement with the

toothed racks

48 or 49, so that the return movement of the

toothed racks

48, 49 is not transmitted to the toothed wheel 50. In the case of a machine operated by hand, the position of the two cam disks 68, 67 is determined by means of some well known device, perhaps by arranging a sliding button directly on the sleeve 66.

ig. 3- shows that the cast part 79 may be uprovided at the top with two

projections

91, 92, for the purpose of accurately adjusting the bar 44. At each oscillation of the cast part these projections will press the lever 95 pivoted 'at 96 upward, by means of the bent end 93 of the said lever, so that the pin 97 on the said lever 95 momentarily enters the corresponding recesses 98 provided on the cast part 98' screwed to the bar44. In this way the bar 44 is locked at the beginning and at the end of each movement. It must be pointed out that the oscillation of the cast part 79 is effected by its driving mechanism substantially always at the beginning of the oscillations of the bar 44, that is to say, at a moment when the oscillations of the saidbar by the cranl.

' drive. 60, 61 are practically zero.

The spindle 6 (Figs. 2 and 4) on which the setting mechanism is adjustably mounted, is also used as a driving spindle for certain mechanisms of the setting mechanism which have to be operated. The spindleb is driven from the main spindle 3 in the following manner, illustrated in Figs. 13 and 14. 'On the spindle 3 is mounted by means of a spline. and groove a sleeve 100 to which are secured two disks,

namely a circular disk 101 and a cam disk 102. If the sleeve is pushed into a position such as shown in Fig. 14, the front or cam disk 102 will cooperate with the two

rollers y

103 and 104 ofa double-armed lever 105 mounted on the spindle 75, in such a manner that the said lever 105 will be given a suitable rocking movement which it will the same, by means of the

lever

110, 110 to the oscillating part 111 secured onthe through spindle 112. The oscillating part 111 has a groove 113 (Fig. 4) with which engages a pin 114 secured to an oscillating part 115 pivoted by means of a screw 116 to the wall 10-and oscillated accordingly about the pivot 116. The corresponding movement of the oscillating part 115 is transmitted by means of one arm 117 of the said oscillating part, provided'with a bent end 118 (Fig. 2) with a slot, and by means of a pin 119 engaging with the said slot, to

an oscillating part 120 (Fig. 2) which is pivoted by means of a screw- 121 to the usual through bar 12.

The oscillating part 120 is pivoted at its lower end by means of a pin 122 to a bar of pins 125, oscillating parts 124 adjustably mounted, by means of a spline and groove, on the previously described spindle 47, (Figs. 1 and 2) so that when the bar 123 is oscillated, the spindles 47 will be rotated.

The spindles 47 are provided with pins 126 passing through slots 127 stamped out in the sliding part 38 (Fig.1) and acting as driver pins, so'that the spindle 47 particlpates in the movements of the sliding part 38. These pins 126 project however at the same time through a slot 129 of a so-called locking device 130 which is adjustable by means of two screws 131, 132 in slots 133 arranged on the sliding part 38. The shape of the slots 129 and of the cam disk 102 (Fig. 4) is calculated in such a manner that at the beginning of each movement of the main spindle 3, a movement to the left of the locking device 130 takes place, according to Fig'. 1.'

The locking device 130 is provided at its left hand end with notches or recesses 140 and is arranged in such a manner that when it is moved to the left, the said recesses engage with a pin.141 (Figs. 1 and 9) secured to the lever 41, on the position of which depends the value of the number transmitted to the counting gear. The lever 41 is in this way locked in its particular position by the locking device 130, so that an accidental movement cannot take place. In .Fig. 1 the locking device is shown in locked position, from which position it is moved to the right for unlocking the pin 141.

It is necessary that, when an addition is being performed and the proper setting has been made, the setting mechanism should remain locked only during one revolution of the main spindle 3, whileafter the completion of the operation the said locking must cease, to enable a new item to be set.

It will be understood that if a multiplication or a division is to be performed, the

-main spindle, for the purpose of carrying out the calculation, must make a whole number of revolutions, during which the setting mechanism must not be shifted and must be locked. In that case the release of the locking device-must not take place. In order to the sleeve 100, .and therefore also of the operative cam disk 102 can takeplace during the revolution of the main spindle, and

therefore the lever 105 will be brought back to its original position during one calculation as has to be done in the case of an addition. If, however, multiplications or divisions are, to be made, the pin 152 is brought In that case, the pin 152 will cooperate with the cam face 151- in such manner that, after the beginning of the revolution, the sleeve 100 will be moved to the left, so that the full or circular disk 101 will cooperate with the long roller 103, and lock the latter in the position shown in Fig. 13, while at the same time the cam disk 102 will be moved out of reach of the roller 104, so that no return movement to the left can take place by means of that-roller. The setting mechanism will therefore remain locked until the pin 152 isagain brought into the position shown in Fig. 14:, before-the beginning of any rotation of the main spindle.

In the case of machines operated by hand, the pin is simply placed in the desired position by means of a suitable handle. If the mechanism is to be used with automatic machines, the arrangement is preferably such that, as soon as the addition key has been depressed, or the slide or carriage of the setting mechanism arrives at its outer right hand position, the pin 152 will be brought thereby into the position shown in Fig. 14, while on a multiplication or division key being depressed, the pin 152 will be brought into the position shown dotted in Fig-14.

The reciprocation of the oscillating parts 111, 111' can be advantageously utilized for operating a practical zeroizing device. In most cases it will be desirable to operate the zeroizing device of the setting mechanism and thus to bring the keys to their original position, that is to say, in the case of an addition, after one revolution of the main spindle, and in case of a multiplication or division, after the calculation is completed, 7;. e. not until the figure set up has been trans- 45 ferred repeatedly to the counting gears. For

into the position shown dotted in Fig. 14..

that reason, thereare secured to the oscillating parts 111, 111' or to the spindle 112 two drivers 170 and 171 (Figs. 3 and 4:) which can press upwardly a bar 174'pivoted about screws 17 3 as soon as the spindle 112 is correspondingly oscillated. The bar 174 then presses the pins175 secured to the toothed racks 26 already referred to, so that the latter are pushed upward, and their movement results in a backward rotation of the

spindles

24 and 30 into their position of rest.

It must be pointed out that the spindle 112 is mounted in the casing in a laterally adco justable manner, so that the drivers 170 and .171 can take up a position outside the sheet metal bar 174, in which case the zeroizing device would not be operative. A lever 180 suitably connected to the sliding part 111, ,enables the same to be moved by hand, as

soon as it has been'moved to the right in .movement can determine whether the movement of the device is to be effected automati cally or by hand.

The position of the lever 180 can be fixed by a suitably shaped member which can spring into a suitable recess of the cover of the setting mechanism. Another advantage of the present key mechanism is that,'although the setting mechanism is locked during the calculation, the calculator can nevertheless set a fresh item on the keys during the calculation, without any confusion being produced by the uninterrupted, simultaneous, repeated transferring of the figure previously set up to the counting. gears. To this end, the resetting spindles 30 are adjustable in their bearings andcan be moved to left and right, (Figs. 5 and 1) by means of the same bar 183 in grooves 184. When the setting mechanism is locked at the beginning of the calculation, the stops 186 and 187 secured respectively to the

oscillating parts

111 or 111, strike simultaneously the stops 188, and thus shift the bar 183, and consequently all the resetting spindles 30, so far to the left that the pins 31 are out of engagement with the key pins 32 situated above. In this way, there is obtained, on the one hand, theresult that during the automatic zeroizing and the consequent rotation of the spindles 30, any keys depressed are not affected, but remain inthe depressed position, until the resetting spindles 30v are again in.their initial position. As soon, on the other hand as this zeroizing has been effected by the oscillation to the right of the sliding

parts

111 and 111, the corresponding stops 190 and 191 willst'rike' the stops 188 of the slide 183 and, thus bring back the rising of a formerly depressed key stops that movement in the usual manner.

i In order to make the matter clear, the followingmust be again mentioned: The oscillating parts 111 orlll', at the beginning of a calculation, are moved a little to the left in Figs. 3 and 4; up to the position shown in the same, and lock the setting mechanism for one or several revolutions. After one half of the last revolution of the main spindle during a calculation, the locking is released as described, owing to the rotation of the spindle 112 in a clockwise direction-to its extreme right position, and at the same time the automatic zeroizing is effected, whereupon a partial rotation of the spindle 112 to the left takes place, into the initial position,

.dle 30 can also be efiected automatically according to-a figure already indicated on the counting gear for the result. To that end step pulleys 198 (Fig- 1) are connected to the figure disk of the counting gear, against which pulleys can press sliding parts 191 mounted in a horizontally adjustable manner in a bar 192. (Figsl and 17.) With the ends 191 of the said" slidin parts slides 193 are adapted to cooperate. U he slides 193 are mounted in the followin manner: Riveted to the figure wheel 53 an sliding on the resetting spindle 30, but rotating with it is a small cylinder 296 with a worm 299 milled around its surface. The cylinder 296 is disposed within a second cylinder 295 having a groove 294 therein, in which the said slides 193 can move to the right and the left (Fig. 17). The slides are prevented from falling out by means of a ring 297 placed over the cylinder. The slides 193 engage with their pin 298 in the milled worm 299 so that, when the spindle 30 'is turned in setting a figure, the slide 193 will be moved to the left (Fig. 17), as this slide with the cylinder 295 is prevented from rotation by the tooth 304 of the cylinder 295 which is positioned by a slide 301.

If the setting of the setting mechanism or of the wheels 53 indicating the key struck, is to be effected in accordance with the figure wheels 8 of the counting gear, a lever 300 (Figs. 1 and 2) will be moved to the left (Fig. 2). This lever 300 is mounted on a slide 301 provided at its end with drivers 302 and 303 (Fig. 2) which'can turn the hollow cylinder 295 bymeans of a tooth 304, so that the slide 193 mounted in the said sleeve, is lowered, and thus brought into contact with the slide 191 while normall it remains in the position shown in Fig. 1 above the end 191 of the slide 191". At the same time, however, during the movement'of the lever 300 to the left, the pivoted double lever 307 (Fig. 2) will be turned, and as the right end of the lever 307 is pivoted as to a bar 308, the said bar shown in Fi 2,

308 will the right in Fig. 2. TlllS bar 308 is normally drawn to the left by means of a spring, and is provided with pins 309 engaging with the oscillating part 310 carrying the previously described locking tooth 22. Owing to the movement of the bar 308 to the right, the said locking teeth arereleased, and in that way the spindles 24' and 30 are moved by the action of the spring 25, each of the resetting spindles. 30 being rotated by the corresponding until the slide 193 presses the side 191 against the stepped wheel 198 which of course allows a different forcing-in of the Spring slide 191' according to the value of the figure on the corresponding figure disk. In that way it is possible to transfer to the keymechanism-a figure appearing on the counting gear, without, as has been necessary in former constructions, setting the counting gear to zero.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. In a setting mechanism for multiplying or dividing machines, a main operating shaft, a number of slides or keys, and means for setting up a multiplicand upon' said slides or keys and for determining the multiplier by a number of rotations performed by said shaft, in combination with a carriage .for determining by its different lateral positions the different digits of the multiplier, a sliding part, and a set of levers adjusted by the means for setting up a multiplicand and connected therewith in such manner that they operate to impart different movements to said sliding part through the medium of said main shaft.

2. In a setting mechanism for multiplying or dividing machines, the combination of a main spindle, setting mechanism, a zero setting device for the same, and means forv ating the latter after one or several revolutions of. said spindle.

4. In a setting mechanism, the combination of a' set of keys or slides, a spindle, a spring to actuate it, stops-on the spindle 00 operating with stops on the keys to return the latter and stop the spindle, a feed gear for calculating machines, and means to set the feed gear according to the position of said spindle. Y i

5. In a setting mechanism, in combination of keys, a spindle set to different positions by the actuation of said keys, a spirally grooved cylinder on said spindle, a sliding part, a lever pivoted on said sliding part and adjusted by said spirally grooved cylinder, and means to move the sliding part to different amounts depending upon the position of said lever.

6. In a feed gear for calculating machines, a sliding part, an adjustable lever pivoted upon said sliding part, a main spindle, and means to impart different movements to said sliding part depending upon the adjustment of said lever.

7. In a feed gear for calculating machines, the combination of means for setting up a figure, sliding parts, means for imparting different movements to said sliding parts depending upon the figure set up,

, a pinion, two racks fastened upon the sliding part and capable of moving the pinion 1n opposite directions, and means to move the pinion into engagement with either one swinging bar and said sliding parts, and

means to adjust the levers to' impart different movements to the sliding parts according to the figure set up.

. 9. In a setting mechanism for multiplying or dividing machines, the combination of a main spindle, setting mechanism, a zero setting device for the same, means for operating the latter after one or several revolutions of said spindle, and means operated at will to render said operating means ineffective.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses, this 14th day of July 1911.

ALEXANDER RECHNITZER.

Witnesses:

AUGUST FUGGER, FUNS BRAMELLY.