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April 8, 1930. L. s. M coRN COMPUTING MACHINE Filed Jan. 6, 1928 III/IA I 'kelwL INVENTOR W Bfflzwt ATTORNEY WITNESSES a. 5?
Patented Apr. 8, 1930 UNITED STATES PATENT OFFICE LEES'IARR MGCORN, 0F ILION, NEW YORK, ASSIGNOR TO REMINGTON TYPEWRITEB COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK COMPUTING MAOHIN E Application filed January 6, 1928. Serial No. 244,914.
My invention relates to computing machines, and it has for its principal object to provide certain improvements in algebraic totalizers; that is to say, in totalizers capable of both addition and subtraction, and of exhibiting the correct balance whether that be positive or negative.
To the above and other ends my'invention consists in certain features of construction and combinations and arrangements of parts, all of which will be fully set forth herein and particularly pointed out in the claims.
One form of my invention is illustrated in the accompanying drawing, in which Figure 1 is a front to rear sectional view of a totalizer on the line 11 of Figure 6 and.
looking toward the right.
Figure 2 is a View of the same totalizer looking in the opposite direction, the righthand side plate being partly broken away.
Figure 3 is a partial sectional View of the totalizer looking toward the left.
Figure 4 is a perspective view of-a certain operating wheel or disk.
Figure 5 is a similar view of one of the regular carrying wheels of the totalizer.
Figure 6 is a partial sectional view on the line 66 of Figure 2, and looking in the direction of the arrows at said line.
Figures 1, 4 and 5 are on a larger scale than Figures 2, 3 and 6.
The invention is shown applied to a Remington combined typewriting and computing 7 machine of that sort which includes not only vertical totalizers but a cross totalizer as well, and the invention is here shown applied to the cross totalizer.
The parts of the machinevnot shown are well known in the art, said machine having been manufactured and extensively marketed for a number of years. As far as my invention is concerned the machine may be like that shown in the patent to J. C. Wahl, No.
1,27 0,47 1, dated June 25, 1918. In the patent the cross totalizer is called the universal totalizer.
In the drawing, 1 indicates the cross or universal truck. on which the totalizer is mounted dove-tail fashion, and to which it is secured by a latch lever .2. The framing of the totalizer itself comprises a right-hand side plate 3, a left-hand side plate 4, and various connecting rods and bars secured at their ends in one way or another to these frame plates and extending transversely between them. Some of these transverse bars are marked 5 in the drawing.
The register Wheels of an ordinary Remington or lVahl totalizer comprises in each denomination a carrying gear 6, an intermediate or idler gear 7, and a pinion 8, the latter rigid with the dial 10 on which the amounts are read.
-The transfer mechanism is of the intermittent gear or so-called Geneva type and it includes Geneva pinions 11 arranged in two different rows and mounted each on a v lever 12. The levers 12 are of two kinds pivoted on frame rods 13 and 14: respectively, and they all at their upper forward ends rest against stop screws 15 and cooperate with a universal bar 16. In all of the respects mention ed and in all other respects except as here-' inafter pointed out, the totalizer shown in the drawing contains all of the devices usually in Wahl or Remington totalizers, and contains some additional mechanism as will be pointed out.
As is well known the Remington totalizer is operated one denomination at a time by an actuator, which actuator comprises a master wheel 17 to engage the carrying wheels 6, and a master dog 18 to engage the transfer levers 12. The fragmental illustration of The numerals on the dial 20 are arranged in the opposite order from those on the dials 10, as conventionally illustrated in Fig. 3 and they are so arranged that when a zero shows through the upper sight-opening 23 a 9 will show through the lower sight-opening 24 in the casing plate 25. This arrangement and construction are not new, having been provided several times before in Wahl totalizers.
In order to display th positive or negative total, as the case may i e, and to hide the end arms 31 pivoted on the shaft 21. Onthe shaft '32 of the idler gears '7 there is pivoted a lever 33 having an arm 34 projecting therefrom through a slot in the casing plate 25 and serving as a finger piece or handle by which the lever can be turned from its lower position, shown in Fig. 1, to its upper position, shown in Fig. 2. This lever has two pins 35 and 36 projecting therefrom into slots 37 and 38 in the arms 28 and 31 respectively of the two shutters, and so arranged as that the swingingv of the lever arm 34 swings said shutters about their respective pivots, the arrangement being such that when the arm 34 is in its lower position the shutter 26 is above the sight-opening 23 so as to display the positive total, whereas the shutter 27 stands in register with the sight-opening 24 so as to hide the negative total. But when the handle is moved to its upper position the shutters are both moved downward, the upper one to cover up and hide'the positive total, and the lower one to expose the negative to- Y tal, as indicated in Fig. 2.
At its inner end the lever 33 is formed with a series of gear teeth 40 which mesh with a series of teeth 41 on an operating wheel or disk 42, shown in perspective in Fig. 4. This disk or wheel is pivoted on the shaft 43 of the carrier gears 6 just to the right of the carrier wheel of lowest order.
The wheel 42 has for its purpose to carry to the wheel 6 of lowest order the so-called fugitive 1 which must be subtracted or added every time an algebraic totalizer changes from a positive to a negative total, or vice versa. The construction of this wheel can best be understood by comparing it with one of the wheels 6. Said wheels 6 are made in three planes or strata. The righthand plane includes thirty gear teeth 44. In the middle plane there are three transfer teeth 45, one for every ten teeth 44. The left-hand stratum consists of a locking disk having a circular perimeter 46, but broken by three notches or concaves- 47 It may be added that each of the transfer gears 11 is also made in three planes. The left-hand plane consists of a set of ten gear teeth meshing with the teeth 44 of a wheel 6 of higher order. The middle plane consists of a scal-. loped locking disk 48, the scallops resting on the periphery 46 of the next wheel of lower order. The right-hand stratum of the wheel 11 is a star wheel 50 having teeth of about the shape shown in'the drawing and adapted to be operated by the transfer teeth 45 or the wheel of lower order. The scallops of the part 48 are concave on a radius equal to that of the periphery 46 so that when one of these scallops is riding on such periphery the transfer pinion is locked and as it meshes with the wheel of next higher order the latter is also locked. lVhen one of these gear trains stands in the zero position, as shown in Fig. 3, a transfer tooth 45 stands just to the right of one of theteeth of the star wheel 50. If now the wheel 6, shown in Fig. 3, were turned counter-clockwise thetooth 45 would turn the Geneva wheel 11 and carry to the wheel of next higher order, the rotation of said star Wheel being permitted by the notches or con caves 47 in the wheel 6.
These wheels 6 are made integral out of steel by a succession of stamping operations in a press. punched out of sheet steel and this disk is then subjected to the action of a die which forms the disk section or stratum 46 with its notches 47. The piece is then put into another press and subjected to the action of another die which makes the middle stratum of the wheel, including the transfer teeth 45, the other section which is afterward to have contained the teeth 44 being merely flattened out as a sort of rim around that section of the wheel which contains the teeth 45. The wheel is then put through another die which cuts the teeth 44 in this projecting flange .or rim. There are various other operations in the manufacture of this wheel that it is not necessary to describe. A comparison of Figs. 4 and 5 will however make it apparent that the wheel shown in Fig. 4 could be, and as a matter of fact it is, made from one of the wheels shown in Fig. 5 at that stage of the manufacture at which the teeth 45 have been formed and the right-hand section of the wheel still consists of a mere flange or rim of sheet metal. In the wheel 42 there is present the same circular perimeter 46 and Ihai e shown one of the notches 47 and'the corresponding transfer tooth 45 integral with a flange 51 in the third plane of the wheel. It is in this plane that the teeth 41 are cut to cooperate with the teeth 40 of the lever 33. A lever 12 and transfer pinion 11 are rovided to connect this wheel 42 with the w eel 6 of lowest denomination in exactly the same way said wheel 6 would be connected with the next one by transfer mechanism. It will be perceived that whenever the handle 34 is moved from one of its positions to the other, the tooth 45 of the Wheel 42 is moved from one side to the other of the adjacent tooth of the star wheel 50 with the result that the Wheel 6, and in fact the whole gear train of lowest order, will be moved one tooth in adding direction when the handle 34 is moved down- A disk like a washer is first v ward and in subtracting direction when said handle is moved upward.
It'should be explained that in Fi 1 the section is taken just to the right of t e gear train of lowest order but the transfer wheel 11 has been sectioned away except for the.
star wheel 50 which is therefore shown in full lines, and a part of the scalloped stratum 48 is shown broken.
It has been explained that except when one of the denominational gear trains stands at 9 or at the wheel. of next higher order is positively locked by the engagement of thescalloped section 48 with the circular periphery 46.. When, however, the wheel stands at zero, as shown at Fig. 3, the pinion 11 is locked by said scallop and periphery in one direction only because part of the scallop projects over the notch-47. In this position of the parts it is the transfer tooth. 45 alone which prevents rotation of the transfer pinion in the opposite direction. When the wheel]- tance away from it, and in factdirectly beneath the next tooth of ,said star wheel. It
will be perceived that the star wheel 50 shown in Fig. 1- is positively locked against counterclockwise rotation by one of its teeth standing directly overthe end of the transfer tooth 45. This wheel is also positively locked against rotation inthe opposite direction by the scallop 48 resting on the periphery 46.
It will be perceived that the locking action is better in the case of the wheel 42 shown in Fig. 1 than it is inthev case of the ordinary carrying wheel 6 shown in Fig. 3. This result is secured by cutting the teeth 41- in a.
different relation to the tooth 45 than the -teeth 44 areicut in the wheels 6. In said wheels 6 a tooth 45 is a sort of-leftward prolongation of one of theteeth 44 or of a portion of one of said teeth ;v but if the series of gearteeth 41 on the wheel 42 were continued until they reached the tooth-45 said tooth 45 would be found to be in the interdental space between twoI-of the teeth 41 instead of being against one'of said teeth. The construction of the lever 33 is such that when it is swung from one of its positions to the other it rocks the wheel '42 to an extent of approximately two ofits teeth 41, the carrying action on the star wheel 50 occurring in the middle of this motion. The two positions occupied by the tooth 45 of the wheel 42 are therefore spaced apart a distance nearly equal to two of the teeth 41. instead of one of said teeth, with the result thatsaid tooth 45 acts better than it would if it only moved one tooth space.
Moreover, the extra motion thus allowed to the lever 33 makes said lever work better the shutters 26 and 27 in fact it is better every .other of their two positions the lug 53 is so located and is made of such length and its two sides are so beveled as to cooperate properly with a V-shaped nose 55 on a locking lever which is pivoted on the rod 13 and drawn downward by a spring 56, similar to those which control thelevers 12. The locking lever having the nose 55 is made similar to those usually employed in the Wahl machine to control the register wheel of lowest order, said lever being riveted to thexside of a longer lever 57 which is like the levers 12 and at its free end cooperates like them with a stop screw 15 and the universal bar 16. The construction is such that when the handle 34 is operated the motion of the wheel 42 forces the nose 55 outward until the turning of the wheel is nearly completed when said nose is drawn down by its spring 56 against the inclined edges of the lug 53 and completes the motion and retains the parts in position.
' The flange 51 hereinbefore referred to has backing for the tooth 45 which is strengthened by reason of the factthat it is integral with said flange. I
The clearance proof mechanism usual in the Remington cross totalizer is presentin the totalizer shown in the drawing. This comprises a feeler comb 58 pivoted at 60 in the side'plates of the totalizer and cooperatpositive dials 10. One tooth 61 of each of these dials is made short, and this tooth registers' with the comb when the dial stands at zero, as shown in Fig. 3. An arm 62 is fastened to the right-hand end of the comb 58 and projects rearward therefrom and is inte rlocked with an arm 63 pivoted on the shaft with the teeth of the pinions 8 of the,
no particular function except to serve as a That other mechanism may be of the said dials were visible at the time.
Hart, Sr. No. 61,471 filed October 9, 1925 and showing what is called a star proof of clearance; or it may be of any other suitable kind. It will be perceived that this clearanceproof mechanism will stand in its clear position with finger 65 in its rear position when the positive dials 10 all show zero,
as shown in Fig. 3; but will stand in its notactor, and in which the fugitive 1 is added or subtracted as required. 1
Each denominational train in the .totalizer (units, tens, hundreds, etc.) occupies a space right and left equal to one letter space of the typewriter-(0ne tenth of an inch). The operating wheel 42 and lever 33 with its studs 35 and 36 all occupyv a space of the same extent next to the right of that'occupied by the units train, so that my algebraic mechanism adds only one letter space (one tenth of an inch)" to the width of the totalizer; whereas most, if not all, previous arrangements have added more than that to the width of the totalizer. This is a decided-advantage in.
this machine, especially'in case the totalizer is required to be of a considerable capacity. This totalizer is mounted on a jumping across truck where the room is limited and where any width and weight beyond what is necessary are not desirable. The parts62, 63, 64, 65 of the clearance proof mechanism add one letter space, as usual. filled on the shaft 43 by' a washer 66.. No doubt the use of the apparatus will be apparent from what'has been said. The han le 34 normally occupies itslower position, shown'in Fig.1, and it can remain there indefinitely, until when the operator comes to cop a total she finds that the total in dicate on'the positive dials 10 begins with one or more 9s indicating a negative or credit balance. Before copying this balance she pushes the handle to its upper position which hides the the negative dia s 20 and which at the same time carries the fu 'tive 1 into the computing mechanism. he then copies the total mm the lower dials, first reversing the machine, after which she restores the handle 34 to its normal position. The copying of the total from the lower dials brought said dials to zero but brought the dials 10 to position which would show a row of 9s if When the handle 34 is restored to its normal position the necessary 1 is added to convert this This letter space is positive dials 10 and exposes row of 9s into a row of zeros and thus to clear the positive wheels. The clear signal mechanism will then show clear.
Various changes may be made in the details of construction and arrangements without departing from my invention.
What I claim as new and desireto secure by Letters Patent,.is
1. In an algebraic totalizer', the combination with register wheels; of an operating wheel at the right of the units register wheel, said operating wheel having the transfer tooth andthe locking surface of a Geneva. transfer train; a Geneva pinion constituting another part of said transfer train and acting to transfer movement from said operating wheel to said units wheel; and a handoperated lever in the plane of said operating wheel and geared theretoto turn said operating wheel in one direction for a negative total and in the opposite direction for a positi've total.
2. In an algebraic totalizer, thecombination with register gear wheels; dials for showing both positive and negative totals and a'shutter construction;*of an operating wheel at the. right of the "units register gear wheel. said operating wheel having the transfer tooth and locking surface of-a Geneva transfer train: a Geneva pinion constituting another part of saidGenevatrain-and'acting to transfer movement from s'aid'operating wheel to saidunits wheel;-a hand-operated lever in the plane of said operatingwheeland geared thereto to turnsaid operating wheel in one direction for a negative total and. in the opposite direction for a positive total; and means whereby said handle operates said shutter construction.
'3. In an algebraic totalizer, the combination with register wheels; of an operating wheel at the right of the'units register wheel, said operating wheel having the transfer tooth and locking surface of a Geneva transfer train; a Geneva pinion constituting another part of said transfer train and acting to transfer movement from said operating wheel to said units wheel; and means for turning said operating wheel to an extent materially in excess of a single tooth space in one direction for a negative total and in the opposite direction for a positive total.
4. In an algebraic totaliaer, the combination with register wheels; of an operating wheel at the right of the units register wheel, said operating wheel having the transfer toothand locking surface of a Geneva transfer train; a Geneva pinion constituting another part of said Geneva train and transferring movement from said operating wheel to said units wl1eel;'and a hand-operated lever in the plane of said operating wheel and geared thereto to turn said operating wheel to an extent materially in excess of a single tooth space in one direction for a negative total and in the opposite direction for a positive total.
5. In an algebraic totalizer, the combination with register wheels; of an operating Wheel at the right of the units register wheel, v
said operating wheel having the transfer tooth and the locking surface with a notch therein of a Geneva transfer train; a Geneva pinion having a scalloped part for co-operation with saidlocking surface and notch, and having a star wheel for co-operation with said transfer pinion and acting to transfer motion of said operating wheel to said units wheel; and means for turning said:
operating wheel to an extent materially greaterthan a tooth space and such that at each extremity of its motion said operating riage; of an operating wheel at. the right of the units register wheel, said operating wheel having the transfer tooth and locking surface of a Geneva transfer train; a Geneva pinion constituting another part of said transfer train and transferring movement from said operating wheel to said units wheel; and a hand-operated lever in the plane of saidoperatingwheel and geared thereto to turn said operating wheel in one direction for a negative total and in the opposite direction for a positive total, said operating wheel and operating lever occupyingright and left the space of one letter space of the typewriter carriage.
Signed at Ilion, in the county of Herkimer, and State of New York, this 20th day of December, A. D. 1927.
I LEE STARR'MoCORN.
|Publication Number||Publication Date|
|US1753711A true US1753711A (en)||1930-04-08|
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