US2732130A

US2732130A - Rosenberg

Info

Publication number: US2732130A
Authority: US
Publication date: 1956-01-24
Anticipated expiration: 1973-01-24

Description

Jam 24, 1956 G. ROSENBERG 2,732,130

CALCULATING APPARATUS Filed July '7, 1952 4 Sheets-Shree*v l Jan. 24, 1956 Filed July 7, 1952 G. RosENBr-:RG 2,732,130

CALCULATING APPARATUS 4 Sheets-Shawv 2 l? fi c1 O/n /2 /f C1 D 0 ,cg CI 2 O EI O D OU n n D CI '.:1 [j g 10D .ZOU 1 Q U El El D El .9/ n 1:1 00:1 00D 00g EJ n D .:1 I] ,E i941 9^ JOD m c: U I] D D 0 O D 0 O E 0 C) g n n f/O D [l :.:J D c1 90D 1GB III 100m E D @@yf :99646 2f L1: D D 8 l: 7 D f D T715 :3j/5 I yf 2 70m 601:1 0@1:1 C] C] n D @Og 50g 19g D Cl n 50D n c1 OD 00D EOD D D :Il D D 30m 1@n 3CD ll" lF/s jfy: M

`lan. 24, 1956 Q ROSENBERG 2,732,130

CALCULATING APPARATUS Filed July 7, 1952 4 Sheets--Shee-v 4 ilnited States Patent O CALCULATING APPARATUS Gerhard Rosenberg, Guildford, England Application July 7, 1952, Serial No. $7,423

Claims priority, application Great Britain September 13, 1951 Claims. (Cl. 23S-JH) The present invention relates to calculating apparatus having a plurality of endless bands arranged side by side each endless band being marked on its outer surface with graduated scales showing, for example, numerals representing numbers, money, measurements or the like, the endless bands being movable manually by an operator to effect a calculation. o

The object of the present invention is to provide an improved apparatus of the above kind.'

According to the present invention calculating apparatus is provided which comprises a plurality of endless bands arranged side by side each being marked on its outer surface with graduated scales, a supporting sprocket wheel arranged at either end of each endless band the teeth vof the sprockets engaging in perforations provided in the'associated endless band, the sprockets at opposite ends of the plurality of endless bands being mounted on a pair of shafts arranged in parallel spaced relationship in a supporting framework, and means associated with each adjacent pair of endless bands for transmitting longitudinal movement from one endless band as the same moves to the limit of its scales to the adjacent endless band.

The assembly is contained within a casing having a removable or hinged lid or cover, the said cover or lid being provided with a series of parallel slots, corresponding in number to the number of endless bands, one said slot being associated with each endless band to permit a stylus or other pointed instrument to be inserted into engagernent with a band whereupon longitudinal movement of the stylus will effect similar movement of the engaged endless band, the cover or lid being further provided with inspection windows one for each endless band and through which a number resulting from manipulation of the endless bands can be viewed.

The endless bands and` their associated sprockets are carried by a framework whichis positioned within the casing the framework comprising, for example, a pair of side members, arranged in spaced relationship with one another and between which the sprocket carrying shafts extend, a plurality of spacing members the number of which corresponds to the number of endless bands, and arranged side by side between the side members and a spacing plate arranged between the opposing edges of adjacent spacing members the components being clamped together to form a rigidassembly by clamping bolts extending between the side members the Shanks of said bolts passing through aligned holes provided in the side members, spacing members and spacing plates.

Each sprocket wheel may be provided with a single set of .teeth for engagement with perforations arranged along one marginal edge of the endless band, or alternatively two or more sets of teeth may be provided on each sprocket with a corresponding number of rows of perforations in the endless bands.

In order that the invention may clearly be understood and carried into effect an embodiment of the same will ICC now be described with the aid drawings in which:

Figs. l and 2 are a front elevation and side view respectively of the calculating unit.

Fig. 3 is an outside view of a casing in which the calculating unit is contained.

Fig. 4 is a sectional view on the line 4-4 of Fig. 3 and Fig. 5 is a further sectional view on the line S-S of Fig. 3.

Fig. 6 is a view showing the developed lengths of the endless bands the scales lon the bands being marked for money calculations. y

Figs. 7 and 8 are side and end views respectively of a toothed sprocket suitable for supporting each endless band.

Figs. 9 and l0 are side and end views respectively of a toothed sprocket having modified means for engagement by the fingers of an adjacent band and Figs. 1l and l2 arewsidc and end views respectively of a finger suitable for use with the toothed sprocket shown in Figs. 9 and l0.

As shown in the drawings the calculating unit consists of a series of .endless bands 1 arranged side by side, each band being supported at either end on a toothed sprocket 2.

The sprockets at each end of the series of endless bands are supported so asl to be freely rotatable on common shafts 3 and 4 respectively arranged parallel to each other, each shaft 3 and 4 being supported at its opposite ends in

side frame members

5 and 6 to which the shafts are secured by riveting their ends over into countersunk holes provided in the

side members

5 and 6.

The edges of adjacent endless bands are separated from one another by separating plates 7 which are maintained in spaced relationship with one another by the interposition of spacing members 8, the

side members

5 and 6, separating plates r7 and spacing members 8 being secured together to form a rigid framework by a pair of elongated bolts 9, the shank of each of which passes through aligned holes provided in the side frame member 5 separating plates `7 and spacing member 8 the threaded end of each bolt 9 being screwed into a correspondingly tapped hole provided in the side member 6.

As shown in Fig. 6 each endless band is made from a single length of metal, plastic or other suitable strip material which is provided at one end with a tongue 11, the endless band being formed by bending the strip so that the edges 12 at opposite ends of the strip abut against one another with the 'tongue ll'situated in contact with the inner face of the band,` the ends being secured together by a rivet which passes through

holes

13 and 14 formed respectively in the tongue and band.

Each band l is also provided adjacent one marginal edge with a series of holes 1S for engagement with the teeth of the sprockets 2, and a further series of holes 16 arranged in spaced relationship along the centre line of the band, the holes 16 being adapted to be engaged by the point of a stylus by means of which the bands are moved when effectng a calculation. Preferably each spacing member 8 is provided with a longitudinally extending groove 17 which forms a guide for the point of the stylus when inserted through the holes 16.

The sprocket shown in Figs. 7 and S consists of a bush 18 the length of which is equivalent to the width of the endless band. The bush has two spaced

shoulders

19 and 20 on the peripheries of which the associated endless band is supported. The shoulder 20 is provided with six sprocket teeth 20a, and the reduced diameter between the shoulders provides a clearance for the passage of the rivet securing the ends of a band together so that the same will move freely when moved.

of the accompanying The outer surface of each endless band is providedwith a plurality of scaies and one unit of each scale corresponds to haii the circumference of a sprocket so that movement of an endless band through a distance equal to one graduation will effect a half revolution of the sprockets supporting that endless band. y

Dririga calulation as one endless bandmoves to the limit of one of its scalesth adjacent band carrying the sn'cceeding scale is moved one whole unit. For this purposeeach endless bandis provided Vat the limit of each of its s'alcs with a linger 21, each saidY finger projecting sideways from the associated endless band and adapted to cngage a dog member 22 formed on one end of each sprocket wheel 2..

The asseiiibiei-iY ealeulaiiiig unit described above is con tained within a casingfornprising a base portion 23 and a removable cover 2,4, the cover being secured in position by` screws Z5 which pass through clearance holes in the 'side walls of the cover and base, the 'screws 25 screwing into tapped holes A26 provided in the thickness of the two extreme outer sp'acin'gmemb'ers 3.

The cover 24 is provided with series of parallel slots 27 the number of slots corresponding 'to the number of endless bands. The slots are positioned on the cover 24 'that each 'slet is in alignment with the longitudinal of the associated band to permitthe stylus to be inserted into the holes 16 in the band. The cover 24 is also provided with inspection windows 28 one foreach endless band land through which a number resulting from manipulation of the endless bands can be Viewed.

The casing may be of metal, plastic or any other `suitable material and the size ot the 'saine is preferably such tha'tit-'ca'n be carried inthe pocket of the user.

The calculating device 'shown in ligs. l3, 4 and 5 of the drawings is designed particularly for effecting calcu# lations in sterling'. l

As shown seven endless bands 'are provided the scales of which are marked as shown in Fig. 6. Referring to Fig. 3, the extreme right hand endless band represents the pence column and is provided with three scales the graduations of which are marked 0 to ll as 'shown at A in Fig. 6. This endless band is provided with one hundred and eight Y(108) perforations I5 for the teeth of the sprocket wheels, thirty-six (36) holes 16 for the stylus ahdthrlee fingers 21.

The nekt two bands represent the shillings column and the first of these is provided with three scales the graduations of which are marked as shown at B in Fig. 6, the other endless band being graduated and marked as -shown at C Fig. 6; Endless bands B 'and C each have ninety (90) perforations i5 and 3Q holes i6, band B also having three fingers VZ1, while band C has fifteen (l5) trip fingers 2l.

The remaining four endless Vbands represent the pounds columns and are identical with the endless bands B shown in Fig. 6. Three only of these endless bands are however provided with vvfingers '21, 'the same 'being omitted from the extreme left hand band.

The marginal edges of the slots 27 are marked according Vto the scales on the associated bands and each inspection window 23 is provided with a conventional symbol designating the ligure shown therein upon completion of a calculation.

To prevent the band from being raised out of contact with the sprocket `periphery as vthetingers pass around the sprocket which couid result in disengagement between the sprocket teeth and the perforations 1 5, -the periphery of each sprocket Z can be provided, as shown in the'modification in lFigs'. 9 and 10, with 'a longitudinal groove 29 in which each lfinger 21'Vis located as it passes around the sprocket periphery. The groove 29V and the iingers '21" are complementary vconfigured forexarnple, toothed shaped as 'shown in Figs. 9-10 and l1-l2 respectively to ensure positive -and accurate engagement between the same. The provision of the grooves 29 has the advantagerthat each linger is supported 'against displacement relatve'to the band to which it is iixed, thus the strain on joint between the finger and band is relieved during operation of the device and consequent damage to the band eliminated.

The calculator of the present invention may include different sets of endless bands the scales of which are graduated to represent plain numbers, money, linear measurements or the like.

hor example, two sets of endless bands may be provided, the scales of one set representing plain rnumbers while the scales of the other set represent money.

What l claim is:

l. Calculating apparatus comprising a casing having a removable lid, perforated endless bands arranged side by side and each being marked on its outer surface with graduated scales, a supporting sprocket wheel arranged at either end of each endless band, the teeth of the sprockets engaging the perforations provided in the associated endless band, the sprockets at opposite ends of the plurality of endless bands being mounted onv a pair of shafts arranged Vin parallel spaced relationship .in asupporting framework removably mounted in the casingy said framework consisting of apair of side members arranged in spaced relationship with one another and between which the sprocket carrying shafts extend, a plurality of spacing members the number of which corresponds to the Ynumber of endless bands arranged side by side between the Vframe side memu bers, clamping means passing through aligned holes provided in the side members and spacing members to unite said framework in a rigid assembly; a groove extending longitudinally of the length of each spacing member for engagement by the pointer a stylus to guide the same during longitudinal movement of an endiess band, a series of parallel slotsin the removable `lid corresponding in number tothe number of endless bands, one said slot being associatetl with each endless band 'to permit the Ystylus to be inserted into engagement with a band, inspection windows in the removable lid, one for each endless band through which a number resulting from manipulation of the endless bands 'can be viewed, and means associated with each adjacent pair of endless bands for Vtransmitting longitudinal movement from one endless band as the same moves to the limit of its scales tothe adjacent endless band.

2. Calculating 4apparatus 'comprising Va casing having a removable lid, perforated endless bands arranged side by side and `each'being marked on its outer 'surface with graduated lscales, a supporting 'sprocket 'wheel arranged at either end of each endless band, the teeth 'of the sprockets engaging in perforations provided in the associated endless band, the sprockets at opposite ends of the plurality of endless bands being mounted Von a pair of shafts arranged in parallel spaced relationship in a supporting framework removably mounted in the casing; said `fram'eworli consisting of a pair of side members arranged'in spaced relation-V ship 'with "one another and between which the sprocket to 'clamp said framework components in Va rigid assembly,

the Shanks of said bolts passing through aligned holes provided -i-n the side members and spacing members; a groove exten-ding lc'in'gi'tudinally of the length of each spacing member for engagement by the point-or a stylns'to guide the same during longitudinal movement of an endless band, a ser-ies of parallel slots in the removable lid corresponding in number to the number `of endless bands, one said slot being associated with each endless band to permit the 'stylus to be inserted into engagement with a band, inspection windowsl in-lthe removable lid, one vfor e'ach endless band and through which Sa number resulting from manipulation ofthe endless bands can be viewed, and fingers extending outwardly from. one side of each endless band the ntunber of fingers corresponding to lthe number of scales marked on the endless band, the fingers of one endless band being engageable with an abutment surface associated with the next- 5 6 adjacent endless band to transmit longitudinal movement 5. Calculating apparatus according to claim 4 wherein from one endless oand as the same moves to the limit of the groove and engaging surface of the nger are of comits scales to the adjacent endless band. plementary configuration.

3. Calculating apparatus according to claim 2 wherein the ngers of one endless band are engageable with pro- 5 References Cited ill the l 0f this patent jections formed by a dog member provided on one end of UNITED STATES PATENTS the sprocket wheels of the adjacent endless bands.

4. Calculating apparatus according to claim 2 wherein 446753 Jewett Feb 17 1891 each sprocket is provided with at least one groove extending longitudinally across the periphery of the same for the 10 FOREIGN PATENTS