US1589347A - Calculating machine - Google Patents

Description

Junev 22 1926. 1,589,347

F. w. BARKLl-:Y

CALCULATING MACHINE Filed Nov. 2l, 1919 4 Sheets-Sheet June 22 1926. 1,589,347

F1 W. BARKLEY CALCULATING MACHINE Filed NOV. 2l, 1919 4 Sheets-Sheet 2 .//7 Vento/7 Freo W @GfK/ey June 22 1926. 1,589,347

F. W. BARKLEY CALCULATING MACHIIIE Filed Nav. 2l, 1919 4 Sheets-Sheet 5 Hl mfllnaaavffl ma@ off/wy- Patented June 22, 1926.

i UNITED l"STATES PATENT OFF-ICE.

FRED WVBARKLEY, OF WINTHROP, MASSACHUSETTS, ASSIGNOB T0 ALBERTO BARK- LEY, 0F PAINTED POST, NEW YORK.

CALCULATING MACHINE.

' Application filed-November 21, 1919. v Serial Nov-339,676.

lThe invention consists of a rotating unit provided with bars having teeth and depressions of variabler lengths formed thereon, the teetlimesh with the shifting gear for rotating the numeral dial to the desired calculation position; the depressions formed in vthe tooth bars permit tlieshifting gear to pass through the said depressionsof the tooth bars not selected to operate.

The object ofthe invention is. to provide a' calculating machine-havingwa'f novel and 4effective* rotating selecting unit having variable length gear teeth Ifor allowing certain numerals' to be selectedy with ease and accuracy which is'durable, practical, noiseless yand cheap to manufacture.

f A complete-description of a calculating" machine and my improvements is as follows; referencebeing made to the accompanying drawing' of' which- Figure 1 is a perspective Aview of the calculating machine showing the'operating members.

Figure 2 is a planview'of the same partly broken away, showing the operating mechanism. f Figure 3 is a'longitudinal section, showing the operation crank' and connections.

Figure 4 is alongitudinal section, showing the keys and selecting mechanism.

' Figure 5 is a transverse section, showing tliekey and automatic locking and releasing mechanism, also showing the operating crank and connections.

Figure 6 shows the selecting mechanism with the over-'rotatingcheck in position.

Figure 7 shows carrying-over mechanism.

lFigui-e 7A; is a side viewof'the Same.

i Figure 8 is a Isi-de'view of the carryingover mechanism.

Figure 9 is a diagrammatic view of the selecting mechanism.

Figure 10 is a plan View of the over-rotating check.

Figure 11 is a plan View of the carryingover mechanism.

Figure 12 is a diagrammatic view showing the `selecting stops. n

Figure 13 shows the selecting'meclianism with the lover-rotating check in the operating position.

' Figure 14 is the same, with the over-rotati-ng check infposition, and the carrying over mechanism coming into position.

Figure shows the carrying-over mechyanism inthe operating position.

Figure 16 shows the reversing mechamsm.

The calculating mechanism is provided with a suitable casing 11, having a cover 12, and slidingv carriage` 13.. Formed on the `sliding carriage is an operating linger 14 for lifting kthe carriage and moving it back and forthfas the'calculating operations require. Alsorformed on the ycarriage is aca-tch 15 which co-operates with a-fplurality'of holes 16 in the covei'f12 for registering the carriage with the set of figured dials required to pei'- forin the. calculation.. Mounted inthe casing 11 and cover 12 are six sets-of selecting keys 17, 18,19, 20, 21, and 22which will give a range of calculation from 1 to 999,999 Yand further 'calculation-may be obtained by manipulating the carriage 12.

fhen the numerals are selected to be calculated, the resultis obtained by rotating the crank 23. To obtain a result in addition and multiplication f respectively, the crank is turned in one direction. and for subtraction and division respectively the crank is turned inthe opposite direction. The result of the calculation is shown through the window 24 formed in the carriage 13. To' clear out th'erfigured calculation,the dials are returned to the zero position by the-handle 25.

number of times the main operating crank 23r has been turned in relation to va given The numeral show- 'l' 'ing' through the window 26 indicates the formula to be calculated. These numerals are cleared out by rotating the handle 27. Each ot the siii sets of selecting keys is marked with ten numerals ranging from zero to nine. Each succeeding dial marking the next order of ten in either direction.

lt obvious that by adding another set oi.' keys the amount can be carried to a higher order ot' tens, and so on, according` to the number or setsv required. its each set of numerals is the same, and as the mechanism is identical in construction and operation. a description or' one unit will be suiiticient. The keys are mounted on a housiu'i' .ic-cured to thel cover ll which is divided into two parts in the horizontal. plane. The keys are assembledL with the cover `l2 and then placed in position in the casing ll. lhc keyboard consists of three plates indi cated by 30, 3l, and the cover l2. rlhese plates are secured to the transverse frames 32, 33, 34, and 35, and are held in the integral relation with each other by screws. 'integral with the frame member 32 is a ledge on which the locking springs are mounted, these springs forming a part of the key locking mechanism, a description which will be taken up hereafter. Machined in the plate 8l, which is rigid with frame, are ten slots through which the keys are free to move vertically at the will of the operator. Superimposed on the plate 8l is a sliding strip 40 which is operated by the Machined in the strip 40 are ten slots through which the keys extend, one slot for each key. rlhe plate 3l extends beyond the trame members 33 and 35, as indicated at 4l, and serves as a support for the bell crank lever 42 oit which there are six, these levers shiftiirg` the gears for selecting the number indicated by the key when it is pressed downwardly into position. The selecting gear will be taken up in detail hereinafter. The bell crank lever is pivoted at 43 and is caused to swing outwardly on its pivot by the movement of the vsliding plate 40; and is also yheld in position by one of the keys and remains locked until the key is released, after which the bell crank is returned to the Zero position by a spring forming a art of another mechanism, which will be described in detail in another part of the specilication.

The individual keys 'forming a set of numerals from zero to nine, inclusive, will be indicated by the numerals oi operation, composing O, l, 2, 3, 4, 5, 6, 7, 8, and These keys are guided in their vertical movements in the cover l2 and plate 30 and When the key is pressed downwardly, the washer travels with it, and compresses the spring. Vhen the key is released, the spring is forced upwardly into its normal position. The keys from l to 9, inclusive, are designed to give a variation in travel to the sliding plate 40 which in turn imparts a swingn ing movement to the bell crank 42. The movement of the sliding plate 40 is determined by the angular cam suriiace formed on the keys l to 9, inclusive. @n the zero key there is no cam surface, this key being used mostly for releasing the other keys in the set from l to 9 inclusive. The cam surfaces 5() are of such progressivey dimensions that a short cam suriiace on kcj,V l in its d wnward movement will cause the bell crank lever 42 to move a correspondingly short distance, which through instrumentalities to be described will select the numeral 1. Formed on key 9 is a cam surtace having the longest dimension which will move the bell crank lever su'hciently to select the nume-ral 9. The intervening gears have a range of movement equa-l to the distance from one to eight, which will bring the numeral to view correspending to the key operated. The keys when operated are locked and released automatically. Formed on the keys is ai lug 52 which extends outwardly from one side of the keys. Thel lug cooperates with the longitudinal bar 53 tor locking the setting up keys from l to 9 inclusive. The locking bar 53 is constantly pressed inwardly by the spring 54 which is held in position on the ledge 35 by a screw. lNhen a key is pressed downwiardly, the movement is sufficient to allow the locking bar 53 to snap over on the lug 52 thereby 'holding the key in its downwarc position. W'hen a second key in the same set is pressed downwardly, or et, it releases the lirst key; that is, when the second key by its downward movement swings out the locking bar it allows the said bar to lock the key in position and it also throws the said bar sutliciently to release the irst key, which permits the said bar to be returned to its normal position by the spring 45.

Mounted in the casing l2 is a shaft which supports the six gears, indicated by 5G, which are free to rotate and to move axially. Also mounted on the shaft o5 is a spring yoke 57 which grips the and is free to move with the gear along the shaft 55. Integral with the yoke 57 is a U shaped balancing arm 58, both legs and 60 being mounted on the shaft 6l. This construction serves as a steadying means to prevent the gears 56 from skewing in their axial travel. The bell crank 42 causes the gear 56 and depending members to travel in one direction against the compression of spring 62. The spring 62 encompasses the shaft 6l and lies sutlice.

between the leg 60 and the pin 63. When the bell crank 42 moves in the opposite direction, the spring 62 causes the gear 56 to move axially back to the starting position, or the one shown in Figure 9.

YWhen the numerals to be calculated are selected, the device is operated to obtain a certain result. This is accomplished by the operation crank 23, Which is turned one or more revolutionsas desired. This move ment of the operation crank 23 imparts a revolving movement to the shaft 66, through the bevel gears 67 and 68, shaft 69 and bevel gears 70 and 71. The crank sha-ft 23 is provided witli bearings 72 and 73, and the shaft 69 is mounted in the bearings 74 and 75. The shaft 66 is mounted in one side of the casing 11 and the opposite end is mounted in the partition 76. The end thrust of the shaft 66 is taken up by the bevel gear 71 and collar 77. Rigidly secured to the shaft 66 are seven disks indicated at 78. The disks being identical in construction and operation, a description of one will Mounted in the disks are nine bars indicated by 1, 2, 3, 4, 5, 6, 7, 8, 9, respectively which is one embodiment of my invention. These bars indicate selective gear teeth corresponding to the nine'keys comprising one set. For example, when a key is set, the key 5 being used for illustrative purposes such key is pushed downwardly, and this movement of the key 5 will cause the selecting gear 56 to be moved to engage the gear bar 5, of the selecting mechanism thereby advancing the dial live places. The bars are rigidly secured in slots cut in the discs 78 and extend across the whole seven discs. Between each of the discs are gear teeth of dili'erent lengths ranging from l to 9, that is, if the key 1 is pressed down, the selecting or sliding gear 56 will engage the tooth 1, Figure 12, and so on, the sliding gear 56 also engaging the teeth 1 to 9, in-

f elusive, in accordance with the axial travel of the gear 56. The distance of travel of the sliding gear 56 is limited to the axial dimension of the cage gear 80, Figure 9. ln the gear bars 1 to 9 inclusive, are recesses 81 which permit the sliding gear 56 to pass through without engaging the teeth `when the selecting bars are rotated.

Referring to Figure 18, this view shows one of the bars from 9 to 1 inclusive about to engage the sliding gear v56. Simultaneously with this engagement the check lever 82 has dropped downwardly on `the lower cam surface 83,thereby allowing the gear 84 to rotate upon the further movement of the gear bars mounted in the disk 78. As we have selected nine as the numeral to be designated, we will now rotate the disc 78 the distance of nine gear bars, each gear bar having a corresponding tooth on the sliding gear The' rotating movement of vthe the window 24, thereby indicating the nuin- `eral required. If the key 1 had been se lected the gear bar 1 would have engaged one tooth of the selecting gear 56 and with further rotation of the disc 78, the gear 56 would have passed through the recesses 81 missing eight teeth, thereby registering the numeral one on the dial. After the gear strips 1 to 9 inclusive, pass by the selecting gear 56, the over-rotating check 82 is raised to the upper cam surface 86, thereby hoidf ing the gear train in the position. designated by the selecting key as shown in Figure 14.

The over-rotating check 82 having a wiping foot which follows the cam contour of the disc 78 and raises and lowers the check f1 lever as conditions require. The lever 82 is loosely mounted on the rocker shaft 91. Pivotally secured to the opposite end of the lever 82 is pawl 92, which engages the teeth of gear 84 and prevents it from overrotating beyond a predetermined position. The lever and pawl are controlled by both the cam surface on the disc 78 and by the rocker shaft 91; the pawl 92 is hooked at one end as indicated by 93.

The hook portion rest-s against the rocker shaft 91, which limits its movement in that direction. When the opposite end of the pawl engages the teeth of the gear 84, yand when its movement is in a counter clockwise direction, it serves as a positive stop and stantly held in one direct-ion by the tension of the spring 94, which is secured to pins mounted in the lever 82 and pawl 92 respectively. Then the calculations are in subtraction .and division, the gear 84 moves in a clockwise direction and the engaging tooth will forcel the pawl out of its path of rotation against the tension of the spring 94, and will dro into the space between the next teeth, therelby preventing it froni overrotating. Vhen the reverse operation is taking place, the lever 82 and pawl 92 are controlled by the rocker shaft 91, lever 97, and cam 96, the latter being secured to the shaft 66. To bring this construction under control of the cam 96 when it rotates in a clockwise direction it wipes against the lever 97 Vdisc 78. This operation causes the lever .82 to be held'rigid .for the purpose of allowing the pawl 92 which is held and operated lll() direction of t-he arrow Figure 13. One of the gear bars from 1 to 9, will cause the gear 56 to turn according to the key that was previously set. This movement of operation of the gear 56 will impart ay rotating movement t0 the cage gear 80, intermediate gear 84, and dial gear 85, thereby showing the result 'through the dial window 24. Then the gear bar 9 engages or is in line with the gear 56, the over-rotating check lever 82 drops down to the lower cam surface, causing the pawl 92 to move out of the path of rotation of gear 84, thereby allowing the whole train of gears to rotate. After they have rotated to the position shown in Figure 14, the over-rotating check lever is raised to the upper cam surface, and the gears are again locked until the next operation. In subtraction and division the crank 23 is turned in the opposite direction, one revolution, which causes the discs and selecting bars from 1 to 9 inclusive, to rotate in the opposite direction as well as all other rotating members, the results showing through the window 24 of carriage 13. During the reverse operation, the overrotating check is again brought into action. lli/hen the shaft 16 rotates counter clockwise, or in the reverse movement, it carries with it the cam 96, which wipes against the lever 97, which swings causing the finger 98 to engage the arm 99 and imparts a rotating movement to the rocker shaft 91. As the lever 9T wipes over the outer surface of the cam 96 it holds the over-rotating check away from the cam surf-ace formed on the disc 78 and the over-rotation checking func.- tion is transferred to pawl 92. As the gear 84: rotates in a clockwise direction, it will force the pawl downwardly at one end against the tension of spring 92, forcing it out of the path of rotation, when it will drop into the space between the next two teeth of the gears, thereby forming an effective check. Although the gear 84 is free to move clockwise against the tension of the spring, it would be impossible for itto move in the opposite direction, due to the hook portion 93, which strikes the rocker shaft and makes a positive look.

In performing the carrying-over operation, the pin 105, located on tooth 9, wipes against the bevel surface of the yoke lever '106, causing the catch on the lever 10'( to be released from the catch 109, permitting it to drop to the position shown in Figure 15. In the reverse movement the pin 105 engages the opposite side of the bevel surface formed on the arm 106 forcing it down in the same manner to complete the carryingover operation. By this movement, the projection 110 is brought into the path of the bevel surface 119` causing it to pivot and swing outwardly into the path of the gear 56, thus imparting a rotating movement thereto, and carrying the result up to the next-dial. In the reverse movement, the operations are timed the same, except a duplicate lever 135 is employed for the carryingover operation.

Vhat I claim as new and desire to secure by Letters Patent ofV the United .Statesis,-

1. In a calculatingv machine, a setting up mechanism including a slidable gear to be selectively set in any one of a` plurality of positions, a cage gear with which the sliding gear cooperates in any position of the latter, a plurality of disks arranged beyond the sliding gear and adapted for manual operation, bars bridging the space between said disks and adapted to cooperate with the slidable gear, said bars being formed with operating projections of progressively less length in thel circular plane of the disks, said projections directly engaging the respectively successive teeth of the slidable gear in accordance with the position of such gear.

2. In a calculating machine, a setting up mechanism, including a plurality of slidable gears adapted to be independently and selectively set at will, a cage geai` with each of the slidable gears is adapted to cooperate, dial gears operated in the movement of the cage gears, a shaft arranged beyond the slidable gears, a plurality of disks on said shaft, and bars extending transverse the set. of disks and engaging in the edges of each disk, said bars being formed between each pair of disks with tooth operating projections of progressively less length in the circular plane of the disks, the projections between any pair of disks controlling the operative movement of one of the slidable gears.

3. In a calculating machine, a setting up mechanism including a plurality of slidable gears, a cage gear for each slidable gear, a dial gear operated by each cage gear, a manually operable member for operating the slidable gears a number of teeth determined by their position, said member having a series of members of bar-like form common to all slidable gears but independently formed within the limits of movement of any one gear to operate such gear a number of teeth determined by the position of the gear.

4. In a calculating machine, a setting up mechanism comprising a plurality of slidable gears, a cage gear for each slidable gear, means for operating the slidable gears a number of teeth in accordance with the positions of such gears, said means including a plurality of disks and bars Connecting the disks, dial gears operated by the cage gears, and controlled by an overthrow check for the dial gears operated directly by said disks.

5. In a calculating machine, a setting up mechanism comprising a plurality of slidable gears, a cage gear for each slidable gear, dial gears operated in. the movement overthrow Cheeks, the edges of the disks of the sldable gears on their axes, and being of cam formation to drectyeontrol means for rotating theshdable gears, said the overthrow cheeks. 10 means including a. series of disks and bars In testimony whereofoffer my signature connecting the disks and formed between this 19th day of November, 1919.

each pair of disks to engage the sldable gears, the dial gear being acted upon by FRED TN. BARKLEY.

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