US1032347A - Type-writing and computing machine. - Google Patents

Description

G. C. TAYLOR.

TYPE WRITING AND GOMPUTING MACHINE.

APPLICATION FILED J LY 15, 1911.

Patented July 9, 1912.

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- G. G. TAYLOR.

TYPE WRITING AND COMPUTING MACHINE.

APPLIOATION FILED JULY 15, i911. 1,032,347, Patented July 9, 1912.

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O. O. TAYLOR. TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED JULY 15, 1911.

1,032,347, Pawntea July 9, 1912.

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\A/ITNESSEE: as 51 WJQM I T-IIS ATTORNEY VENTEJR= onrrn .srarris rarnnr onion CHARLES C. TAYLOR, 0F 'WASHINGTUN, DISTRICT OF COLUMBIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO "UNION TYEEWRITER COMPANY, OF JERSEY CITY, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

TYPE-WRITING AND COMPUTING MACHINE.

To all whom, it may concern.-

Be it known that 1, CHARLES C. TAYLOR, citizen of the United States, and resident of Washington, District of Columbia, have invented certain new and useful Improvements in Type-\Nriting and Computing Machines, of which the following is a specification.

My invention relates to computing machines and more especially, though not eX- clusively, to combined typewriting and computing machines.

In some computing machines provision is.

made for setting the mechanism for different characters ofv arithmetical operation, such for example, as addition and subtraction. Where a machine is arranged for addition and subtraction the great majority of the items are usually added, and itusually happens that not more than one or two numbers need be subtracted at a time in some combined typewriting and-computing machines the ordinary use of the machine is to adda column of figures and then set the machine for subtraction to write the total, said total being subtracted from itself, thus bringing the register to zero. In this case it is onlythe total that is subtracted and after that operation has been efiected, it is necessary to set the machine again immediately for addition. In some cases a discount has to be subtracted out first and then the remainder written as a total and subtracted out. In such a case there need to be two consecutive subtractions after which the machine should again be set. for addition. In using these machines as here 'tofor'e constructed, it has been necessary for the operator to charge his mind with the resetting of the machine for addition and in case of his forgetting to reset it, the first items of the next column of figures will be subtracted instead of added and the work will be spoiled.

The principal object of the present invention is to provide means for automatically restoring the computing mechanism to a setting for addition after a single subtraction in case the character of the work calls for but one subtraction or after a predetermined plurality of subtractions in case the character of the work calls for 'more than one.

By this means the operator is relieved Specification of Letters Patent.

Application filed July 15, 1911. Serial No. 638,693.

Patented .nn e, rate,

of the necessity of keeping this change or adj ustment in mind and is'also free from the loss of time and chance of error that would result from any failure to reset the machine at the right time.

To the above and other ends which will appear hereinafter, my invent-ion 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 embodiment of my invention is illustrated in the accompanying drawings which are all on an enlarged scale and in which Figure 1 is a front elevation of so much of the combined typewriting and computing machineas is necessary to illustrate the application of my invention thereto. Fig. 2 is a side elevation of the same. Fig. 3 is a'plan view partly in section. Figs. 4, 5 and 6 are fragmentary views of certain parts of the mechanism, shown in different posi-.

tionsin the different views to illustrate the operation of the mechanism when arranged to restore the computing mechanism to addition after two consecutive subtractions. Fig. 7 IS a view of nearly the same parts but with the addition of a means for limiting combination of computing and typewriting mechanisms in extensive use and well-known in the art.

The main frame of the Remington-typewriter comprises a base from which rise cor- 'ner posts 1 which support a top plate 2.

The machine also comprises a carriage arranged to travel back and forth across the top plate 2 and carrying a platen against which types 3, mounted on front-strike type bars 4, are adapted to strike. These types are operated by printing keys 5 mounted on key levers 6 which are suitably connected with the type bars 4 and with an escapement that controls the step-by-step feed of the carriage. The VVahl adding attachment includes an actuator I having a frame that includes a casting 8 which stands about verrind tic-ally in front of the upper part of the typewriter to which said casting is secured by means of brackets 10 fastened to the top plate 2 of said typewriter. Said actuator also includes a series of levers 11 which are connected by links 12 with thosekey levers 6 thatare arranged to write numerals. The levers 11 constitute parts of a differential operating n'iechanisu'i that turns a master wheel 13 a number oi? teeth corresponding to the digit written. The lVahl machine also includes a carriage 1% which consists essen-,

tially of a long bar of the prismatic cross section shown in Fig. 2 and arranged above the actuator and in. front of the casting 8, said carriage being supported in part by said casting through the medium of certain rollers 15 which are journaled on the casting and cooperate with the carriage about in the plane of the master wheel 13. Said carriage has arms 16 projecting from its ends and formed with vertical slots 18 through which pass screws 19 threaded into arms 20 projecting forward from the typewriter carriage. These connections cause the computer carriage 14 to move in unison with the typewriter carriage and they also assist in supporting the computer carriage. @n the carriage 1% one or more adding heads or registers 21 may be supported said adding heads being ad justably secured at any de-' sired positions along the carriage 1 by means of a latch lever 22 that cotiperates with notches 23 in the carriage 14. Only one adding head is shown in the present case. Said adding head contains or includes register wheels 2-1 which are in gear with certain gear wheels 25, which gear Wheels are adapted to mesh one at a time with the master wheel 13, so that. the travel of the carriage brings one denomination after another of the register under'the control of the actuator. The casing of the adding head includes two side plates 26 and 27. A roller 28 is provided at the front of the actuator to guide the adding head across the master wheel with greater precision; The master wheel 13 is turned in one direction or the other for addition or subtraction by means that include a train of sliding change gears one of which is shown at 30. These gears are controlled in their sliding or change motion by means of a rod 31 projecting toward the left trom a housing 32 that incloses pants of the actuating mechanism. W hen the rod 31 is pushed inward or toward the right to the position shown in the drawings the machine is set "for addition and when this red is pulled out to the limit of its motion toward the left the machine is set for subtraction. A handle 33,-here shown as consistingct' a p ate or bar of sheet metal projecting toward the front of the machine,

is secured to the end of the rod 31 by means of a screw 34; threaded into the end of the rod as shown in Fig. 3. In one form of the VVahl machine, as heretofore constructed, such a handle has been secured by an ordinary screw but in the present instance I have made the head of the screw elongated into a rod 35 for a purpose which will presently appear. In order to prevent the handle 33 from turning a guide pin 36 is provided, said pin projecting from the housing 32 through a suitable hole in the handle The pin 35 projects through an car 37 of a bracket 38 which is secured to the casting 8 by screws 40. A spring 41 is coiled about the rod 35 and is compressed. between the car 37 and the enlarged part of said rod that serves as a sort of head for the screw 34. The tension or this spring tends to hold the rod 31 in position for addition and when said rod is pulled toward the left by the handle 33to set the machine for subtracticn, this spring is capable of restoring said rod to its normal position. In order to hold the rod temporarily in position for subtraction, a pawl or latch i2 is pivoted between ears 43 of the bracket 38 on a pivot screw 4 Said pawl being overweighted on its right-hand side, is adapted to fall by gravity into engagement with a short arm 45 which constitutes a rearward extension of the handle 33.

I have shown in the drawings means A adapted to move the pawl 42 automatically out or": engagement with the arm 45 after two successive subtractions. Said means includes a bar 426 slidably mounted above the actuator on two pins or screws 4 and 18. The bar {t6 lies just in front of the lower part of the carriage 14: and above the body of the actuator and below the extreme rear part of the adding head. The screw 47 is threaded into a bracket 50 which is secured by screws 51 to the upper edge of the casting 8. Said screw 17 passes through a slot 52, Fig. i, in the bar 46, said slot being wider than the diameter of the screw. The

screw d8 passes through a slot 53 in the bar 46 said slot being of such a length as to define the possible sliding motion of the bar.

The'screw 48 is threaded into a bracket 54 which is secured to the casting 8 by screws 55 which preferably pass through short slots in said bracket for the purpose of permitting a certain amount of adjustment to the screw 48, which screw serves as a stop to limit the motion of the bar 46. The brackets 38, 50 and 54 allpass beneath the carriage 14 and are bent up at their forward ends to support the several parts. The bar 46 has a depending arm 56 to which is con-' 1 nected a restoring spring 57, one end of which is secured to a bracket 58 suitably fastened to the casting 8. The spring 57 tends to ppll the bar 4:6 lengthwise toward the right and it also tends to rock the bar about the pin d8 as a center, this last a reason of the fact that the spring is connected with the bar below the said pin 48. The bar 46 has a lug 60 projectingupward therefrom, said lug preferably consisting of an arm pivot-ed to the side of the bar on a screw 61. This pivoted part has projecting therefrom a second arm 62 that lies between .'t-he two branches of a spring (33 which is coiled or bent about a screw (34 threaded into the bar 46. The two ends of the spring tend to approach each other and their motion is limited by a pin (35 projecting from the bar 46. The construction is such that the spring 63 normally holds the lug 60 in its upright position shown in the drawings but said lug can yield in either direction upon application of force sulllcient to bend the spring. The lug (3O stands in the path of motion of a part 66 of the right-hand cover plate 27' of the adding head, this part 66 being made to project a little below the corresponding part of the left-hand casing plate 26 so that said left-hand plate will not engage the lug 60 but said lug will be engaged by the right-hand casing plate.

The pawl or latch 42 has two teeth 67 and 68 formed thereon, the tooth 6'? being longer than the tooth (38 as clearly shown in the drawings. l Vhen the adding machine is set for subtraction, as indicated by the position of the arm 45 in Fig. 4, the ear 66 engages the lug 60 at about the time the master wheel is moving into engagement with the register wheel of last order and when said registerwheel is in engagement with the master wheel the bar 46 has been pushed over from its normal position shown in Fig. 1' to the position shown in Fig. 4,

where the left-hand end of said bar is in engagement with the tooth 67. After the digit of last order has been written the carriage makes another step to the left, wlnch moves the bar 46 to the position shown in Fig. 5, thus raising the latch 42 about half way out of engagement with the arm 45. The pawl will be held in this position by friction due to the tension of the spring 41. Then the carriage is withdrawn toward the right, the bar 46 resumes its normal position shown in Fig. 1, being pulled back to that position by the spring 57 In moving back to normal position the end of the bar 46 is slightly elevated by the tooth 68, this motionbeing permitted by the extra width of the slot '52; and' when the bar is snapped down from oil the tooth it is drawn to its lower position again by reason otthe oft-set position of the spring 57.

The operation just above described takes place in subtracting out the discount at the end otthe adding operation. The next operation of the machine is to subtractout the total or balance and at the end of that operation the machine should be restored to condition for addition. When in the operaae i'i 3a tion of subtracting out the total, the adding machine carriage reaches the pointwhere the master wheel is in engagement with the register wheel of lowest-order, the bar 46 will have been moved to the position shown in Fig. 4 but this time it will engage the tooth (38 instead of the tooth 67. When the carriage takes its next step after the writing of the last digit the parts will move to the arm 45 and allowing the spring 41 to, restore the mechanism to its setting for addition. In case the carriage is moved entirely past the adding column in either direction the lug 60 can yield about its pivot (31 against the tension of the spring 63 and permit the carriage to pass, the lug snapping back to normal position after the carriage has passed.

It will be noted that the mechanism above described is not only adapted to restore the adding mechanism to addition in case of two consecutive subtractions from the same adding head, but it would also restore the mechanism to addition after two successive s'ubtractions one from each of two adding heads, in case there should be that many on the machine and in case there was no discount to be subtracted out. It will also be understood of course that the number of subtractions permitted by the automatic mechanism can be varied by suitable variation in the mechanism itself. One such variation its provided for in the device as shown, that is to say, provision is made for causing the latch 42 to be tripped off after only one subtraction. To this end the pawl 4-2 is formed with a slot 70, Fig. 4, and one of the ears 43 is formed with a threaded hole 71, Fig. 1. These parts are so related that it a screw 72, Fig. 7, having a reduced end, be screwed into the hole 71 so that said reduced end enters the slot 70, then said screw will limit the downward motion of the pawl 42 to the position shown in Fig. 7 in which the pawl is only partially engaged with the arm 45 and in which the tooth 68 lies in the path of the bar 46. When the screw 72 is in position asshown in Fig. 7, the tooth 67 is inoperative and the latch will be released after a single subtraction.

It will, of course, be understood that various changes can be made in the details of construction and arrangement without departing from my invention.

What I claim as new and desire to secure by Letters Patent, is

1. In a combined typewriting and comwriting mechanism, computing mechanism for registering numbers written by said typewriting mechanism, means adjustable by hand at the will of the operator to set said computing mechanism from addition to subtraction, and means for resetting said the position shown in Fig. 6, thus releasing put1ng-mach1ne,the comblnation of type' adjustable means, said resetting means constructed to act automatically at the end of a subtracting operation.

2. In a combined typewriting and computing machine, the combination of typewriting mechanism, computing mechanism for registering numbers Written by said typewriting mechanism, means adjustable by hand at the will of the operator to change the character of the arithmetical operation performed by said computing mechanism, and means for restoring said. adjustable means, said restoring means arranged to act automatically at the end of the Writing and registering of a number.

8. In a computing machine, the combination of a register, an actuator, a traveling carriage for bringing one denomination after another or" said register under the con trol of the actuator, means settable by hand at. the will of the operator to change the character of the arithmetical operation performed, and means controlled by said carriage for automatically resetting said settable means,

i. in a computing machine, the combination of a register, an actuator, a traveling carriage for bringing one denomination after another of saidregister under the control of said actuator, said re 'ister being adjustable with relation to the travel of said carriage, and means controlled by said register for setting the mecha to change the character of the arithmetical operation performed.

5. The combination oft typewiiting and computing mechanisms for Writing and registering numbers, said computing mechanism being capable of the operations of addition and subtraction and comprising register, an actuator, a traveling carriage for bringing one denomination after another of said register under the control of said actuator, said register being ad ustable with relation to the travel of said car riage, and means comprising a part adjusttable ineanmsaid setting means comprising a part on said actuator a part on said adding head, said oarts being timed to act at the end of a registering operation.

7. in a combined typeivriting and coinpnting machine, the combination of type- Writing mechanism including a carriage,

computing mechanism for registering numbers Written by said typewriting mechanism and including means settable to add or subtract the numbe written, a spring for no) mally holding said settable means set for addition, a latch for holding said settable means for subtraction, and means controlled. by said carriage for tripping said latch.

8. In a combined typewriting, and computing machine, the combination of type- Writing and registering mechanism for writing and registering numbers, means adjustable to change the registering operation from addition tosubtraction, and means for automatically restoring said adjustable means, said restoring means being arranged to restore said adjustable means after a pre determined plurality of numbers have been subtracted.

9. In a combined typewriting and computing machine, the combination of typo .vriting and registering mechanisms for writing and. registering numbers, means adjustable to set the machine from addition to subtraction, and means for automatically re storing said adjustable means, said restoring means being arranged to restore said ustable means after predetermined number of subtractions, and means for changing the number of subtractions required to bring said restoring" means into action.

10. in a computing machine, the combination of a series of register Wheels, means for actuating said wheels one at a time, means for ii'uparting a relative step by step motion between said actuating means and saie register wheels to bring one after another of the said register wheels under con- 'rol said actuating means, a device adjustable by hand at the will or" the operator to change said computing mechanism from addition to subtraction, and means, for restoring said device, saidrestoring means being operated by said step by step moving part. v

11. In a computing machine, the combination 01"- mechanism for adding and subtracting numbers, means settablc for addition ,and subtraction, and means for automatically changing the setting of said settable means after the registration of a predator .iiined plurality 0t numbers.

' 12. In a computing machine, the combinetion of mechanism for registering numbers,

means settable for addition and subtraction,

means for automatically operating said setiable means after the registration of: a predetermined number ot numbers, and means for changing the number of registrations required for operating said settable means.

13. In a computing machine, the combination of a register, an actuator, a traveling carriage for bringing one denomination after another of said register under the control of said actuator, means adjustable to set rosaser 5 the m chanism to! ZldliltlOll and subtraction, and means operated by a predetermined pluralit-y of excursions of said carriage for changing said adjustable means.

lal. In a combined typewriting and computing machine, the combination of an actuator, a register, a traveling carriage, a device adjustable to set the mechanism for ad dition and subtraction, a spring for normally holding said device at addition, a latch for holding said device at subtraction, and means operated by the travel of said carriage for tripping said latch.

15. in a combined typewriting and computing machine, the combination of an actuator, a register, a traveling carriage, a device ad ustable to set the mechanism for addition and substraction, a spring for norinallv holding said device at addition, a

device adjustable to set the mechanism for addition and subtraction, a spring for normally holding said device at addition, a

- latch for holding said device atsubtraction,

means operated by the travel of said carriage tor tripping said latch after a predetermined number of excursions of said car riage, and means for changing the number of excursions required.

17. In a combined typewriting and computing machine, the combination of a register, a traveling carriage on which. said register is adjustably mounted, an actuator, a device adjustable to set the mechanism for addition and subtraction, a spring for normally holding said device at addition, a latch for holding said device at subtraction, means operated by a travel of said carriage for partialiy tripping said latch, and means operated by a subsequent excusion oti said carriage for fully tripping said latch.

'18. in a computing machine, the combination of a register, a carriage on which said register is adjustably mounted, an ac tuator, means settable to change the mechanism for addition and subtraction, means comprising an abutment on said actuator and an abutmentcn said registertor chang King said settable means, one of said abutments being yielding to allow the register to pass the position at Whichsaid abutments coiiperate,

- 1. In a combined typewriting and computing machine, the combination with type writing and computing mechanisms for iirinting and registering numbers, said computing mechanism comprising a register, an actuator, and a traveling carriage, of means settable to change the character of the aritlimetical operation performed by the computing mechanism, and means for automatically setting said settable means, said automatic means comprising an abutment associated with the actuator and an abutment associated With the register, one of said abutments being yielding to-allow said carriage to move past the point at which said abutments cocperate.

20. In a combined typewriting and computing machine, the combination with typewriting and computing mechanisms for Writing and registering numbers, said com-.

puting mechanism comprising an actuator, a 30 register and a traveling carriage, of means 'settable to change the character of the arithmetical operation performed by the coinput-ing mechan sm, a spring for normally holding said settable means in one position,

a latch for holding said settable means in another position, a sliding bar for operating said latch, and means whereby the travel of the carriage operates said bar.

21. In a combined 'typeivriting and coin- 9Q puting machine, the combination with type Writing and computing mechanisms for Writing and registering numbers, said computing'mechanism comprising a register, an

actuator and a traveling carriage, a part 5 scttable to different positions to change the character of the arithmetical operation performed by the computing mechanism, a spring for holdin said-part in one position,

a latch for holding said part in another position, a sliding bar for operating said latch, a plurality of teeth on which said sliding bar operates, an abutment onsaid bar, and coiiperating abutment on said register;

22. In a combined typewriting and CO111- piiting machine, the combination witli type- Writing and computing mechanisms for Writing and registering numbers, said computing mechanism comprising a register, an

actuator and a traveling carriage, a part settable to different positions to change the character of the arithmetical operation per? termed by the computing mechanism, a spring for holding said partin one position, a latch for holding said partin another position, a sliding bar for operating, said latch, plurality of teeth 0H.Wl1l(3l1 said sliding bar operates, an abutment on said bar, and a cotiperating abutment'on said register, one of said abutments being capable of yielding to allow said traveling carriage to pass beyond the point at which said abutmeiits coiiperat-e. v

23. In a combined typewriting and .com-

puting machine, the combination with type writing and computing mechanisms tor writing and registering numbers, said com- 'puting mechanism comprising a register, an actuator anda traveling carriage,v a part, settableto different posit-ions to change the character of the arithmetical operation permeans capable of being set to hold said latch formed by the computing mechanism, a in a partially operated position. 10 spring for holding said part in one position, Signed at Washington, District of Columa latch for holding said part in another pobia, this tenth day of July A. D. 1911. 5 sition, a sliding bar for operating said latch, CHAR-LES C. TAYLOR.

a plurality of teeth on Which said sliding Witnesses: bar operates, an abutment on said bar, a co- CHAs. O. Itnnn, operating abutment on said register, and J AMES G. ROY.

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