US1275528A

US1275528A - Calculating-machine.

Info

Publication number: US1275528A
Application number: US56044410A
Authority: US
Inventors: Samuel E Carlin
Original assignee: UNDERWOOD COMPUTING MACHINE CO
Current assignee: UNDERWOOD COMPUTING MACHINE CO
Priority date: 1910-05-10
Filing date: 1910-05-10
Publication date: 1918-08-13
Anticipated expiration: 1935-08-13

Description

S. E. CARLIN.

CALCULATING MACHINE.

APPLICATION FILED MAYIO, 1910.

Patented Aug. 13, 1918,

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s. EQGARLIN. CALCULATING MACHINE. APPLICATlDN HLED MAY 10. BIO- ?SHEETSSHEET 2- Patentd Aug. 13,1918.

s. 5.0mm. CALCULATING MACHINE.

luwucmlcm FILED MAY x0, 1910. Patented Aug. 13, 1918. 1 SHEETS-SHEET 3.

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CALCULATING MACHINE. APPLICATION FILED MAYYIO, 1910.

1,275,528. I I Patented Aug. 13, 1918.

7 SHEETSSHEET 4- CALCULATING MACHINE APPLICATION FILED MAY 10, 19x0.

' Patented Aug. 13, 1918.

ISHEETS-SHEET 5.

S. E. CARLIN.

CALCULATING MACHINE.

APPL|-AT|ON FILED MAY 10. 1910.

1,275,528. Patented Aug. 13, 1918.

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CALCULATING MACHINE.

APPLICATlON FILED MAY 10. 1910.

Patented Aug. 13, 1918 7SHEETSSHEET 7.

# zwwm m. Pum umo" WASNIN UNITED STATES PATENT OFFICE.

SAMUEL E. CAR/LIN, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNDERWOOD COMPUTING MACHINE COMPANY, OF NEVJ YORK, N. Y., A CORPORA- TION OF NEW YORK.

CALCULATING-MACHINE.

Specification of Letters Patent.

Patented Aug. 13, 1918.

Application filed May 10, 1910. Serial No. 560,444.

To all whom it may concern:

Be it known that I, SAMUEL E. CARLIN,

a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Calculating-Machines, of which the following is a specifica tion.

This invention relates to improvements in calculating machines of the type illustrated in my application for United States Letters Patent, Serial No. 547,300 filed March 4, 1910, and in which application there is shown and described an improved calculating attachment for typewriting machines embodying registering mechanism comprising registers or totalizers and traveling actuating means therefor, which actuating means is adapted to be moved. into and out of operative position with relation to the register and in a direction transverse to the axis of the operating mechanism and to be advanced to change its denominational re lation to the number bearing wheels or nembers of the totalizer; this latter movement being accomplished by the advancing movement of the typewriter carriage. There is also shown and described mechanism for imparting a variable operating motion to the actuatin mechanism. This invention is in the nature of an improvement upon the devices disclosed in said application No. 547,300, which application embodies a dis claimer in favor of my other co-pending applications No. 236,498, filed December 12, 1904; No. 302,845, filed February 26, 1906; and No. 504,595, filed June 26, 1909. Likewise the claims herein are also limited to devices. not disclosed either in 547,300 or in any of said other applications.

In the present application there is also provided similar mechanisms, but it is one of the objects of the present invention to provide improved means for returning the typewriter carriage to its initial or starting position from any point of its advancement, and improved means for preventing the accidental or mischievous operation of the advancing mechanism for the typewriter carriage simultaneously with the operation of the returning mechanism for the carriage to prevent locking of the parts and the con sequent damage resulting therefrom. A further object of the present invention is to provide improved means for returning the typewriter carriage to any predetermined point intermediate the point to which it has been advanced and the initial or start ing position at the will of the operator, so that the typewriter carriage will be properly and quickly positioned for tabulating the amounts on the paper.

rknother object is to provide improved means whereby the mechanism which is adapted to impart a variable operating movement to the register or totalizer actuating mechanism may be employed for the purpose of returning the typewriter carriage to a predetermined point.

In the said prior application there is also shown and described means whereby the calculating attachment may be readily attached to the keys of the typewriter whereby the manipulation of the keys of the attachment will not only actuate the registering mechanism to register or indicate results thereon, but will also actuate the numeral keys of the typewriter to print the results, while at the same time the typewriter numeral keys may be operated independently with respect to the calculating mechanism and without actuating the latter. Y

Another object of the present invention is to provide improved means whereby tne actuation of the typewriter keys will be prevented, and the mechanism for shifting the register-actuating means into operative position with respect to the register will also be rendered inactive to prevent the operation of the register or totalizer, during the return movement of the carriage by the mechanism which imparts the variable operating motion to the totalizer or register actuating means.

further object is to provide an improved machine of this character which will be simple and durable in construction and effective and efficient in operation.

To the attainment of these ends and the accomplishment of other new and useful objects, as will appear, the invention consists in the features of novelty hereinafter more fully described and claimed and shown in the accompanying drawings illustrating an embodiment of the invention, and in which- Figure 1 is a detail top plan view of a portion of a machine of this character conof Fig. 1.

structed in accordance with the principles of this invention.

Fig. 2 is a detail sectional view on line 2-2 of Fig. 1.

Fig. 3 is an enlarged detail plan view of a portion of the mechanism shown in Fig.1 with parts removed and as taken on line 3-3 of Fig. 2.

Fig. 4 is a detail sectional view on line 44 of Fig. 1, looking in the direction of the arrows.

Fig. 5 is a sectional view on line 5-5 of Fig. 1.

Fig. 6 is a detail sectional view on line shown in Fig. 11.

Fig. 13 is a sectional view on line 1313 Fig. 14 taken on line 14-14 of Fig. 1. Fig. 15 is a vertical section.

Referring more particularly to the drawings and in the present exemplification of the invention, the numeral 20 designates generally the totalizers or registers which are mounted upon a suitable support 21, which in turn is mounted upon a base 22. Each of the number bearing members of the t0- talizersis provided with a gear 23 by means of which motion is imparted to the number bearing members. A carriage 24 (see Fig.

4) is mounted upon the base 22 so as to be reciprocate-d transversely thereof, and traveling actuating mechanisms, including operating gears 25, are provided for imparting motion to the gears 23. These gears 25 are mounted upon a shaft 26 for rotation therewith and for adjustment longitudinally with respect thereto and the shaft is in turn journaled in suitable supports 27 arranged at each side of the machine and these supports are in turn pivotally mounted on a shaft 28 which is connected with the'shaft '26 by meansof gears 29 on theends of the shaft 28 which mesh with gears 30 on the ends of the shaft 26. Motion is imparted to the shaft 28 by means of a gear 31 which in turn meshes with an elongated toothed drum 32 so that the actuating mechanisms, as well as the supports 27 maybe reciprocated longitudinally with the carriage 24 and at the same time'the gear 31 will be is an irregular sectional View maintained in mesh with the drum 32 during the reciprocating movement (see Figs. 3 and 4). The supports 27 are connected by means of a connecting bar or rod 33 and locking members 34 are provided for locking the number bearing members or wheels of the totalizers or registers against overthrow. The supports 27 and the connecting bar Or rod 33 are adapted to be rocked about the shaft 28 to move the actuating gears 25 into or out of position to mesh with the gears 23 of the registers by means of a'bar or rod 35 which latter passes through the apertured extremities 36 of pivotally supported members 37, which latter are connected to the locking members 34 (see Figs. 3 and 4) and the rod or member 35' is connected to a rock shaft 38 by means of arms 39" and the shaft 38 is mounted in suitable supports 40 on the base 22, so that when the shaft 38 is rocked 'in its bearings in a manner to be hereinafter set forth, the actuating gears 25 will be adjusted toward and away from the gears 23 and transversely with respect to the axis of the gears 25. The rod or bar 35 passing loosely through the apertured extremities 36 of the members 37 will permit the carriage 24 and the actuating gears 25 to be adjusted to change the denominational position of the gears 25 with respect to the number bearing members of the register.

The gears 25 are normally held in aninactive position with respect to the gears 23 and in order to render any one or more of the totalizers 20 active, it is necessary to shift the gears 25 laterally so that they will move longitudinally on the sl1aft'26. In order to accomplish this, selector mechanisms are provided and each comprises a collar 39 (see Figs. 2 and 3) which collars are mounted loosely on the shaft 28 and are provided with spaced circumferential ribs 40. These collars are provided with spaced uprights 41 having yoked or bifurcated extremities 42 which receive the shaft 26 and these uprights are arranged one on each side of the gears 25 so that when the collar'39z is shifted the uprights will correspondingly shift the gear 25 on the shaft 26. Keys 41 are also provided which are mounted loosely on the support 42 and have a sliding connection with a stem 43 (see Fig. 2) which passes loosely through a sleeve or collar 44 rotatably mounted in a support 45. The

lower extremity 46 of the stem 43'has a bearing'in the carriage 24 and an elastic mem- 'ber 47 tends normally to return the key 41 and to hold'a pin 48 in a slot 49 in the sleeve '44 to look a gee-r50 against operation under the tension of an elastic member 51. The

sleeve 44 is arranged in an, upright position i and the gear 50 thereon meshes'with the ribs 40 on the collar 39. The elastic member 51 tends normally to shift the sleeve or collar 39 on the shaft 28 to move the gear 251011- gitudinally of the shaft 26 and position the gear so that it will mesh with one of the gears 23 of the totalizer when the gear 25 is moved toward the totalizer. One of these selector mechanisms is provided for each of the totalizers and although one only has been specifically described, the same description will apply to each. When one of the keys 41 is depressed to render the respective gear active, the first operation will be to depress the stem 43 against the tension of the elastic member 47 and this will move the pin 48 out of the notch 49 of the sleeve 44. hen thus released, the elastic member 51 will rotate the sleeve 44 and the gear to shift the sleeve 39 and move the gear 25 into operating position.

The selector mechanisms thus described may be reset to an inactive condition by -means of a suitable key or bar 52 (shown more clearly in Figs. 1 and 2) and this bar or key 52 extends substantially the length of the totalizers 20 and is connected to stems 53 similar to the stems 43. The stems 53 are each connected to a rock shaft 54 mounted in suitable bearings. These shafts are provided with arms 55 connected by means of a bar or rod 56 and the bar extends transversely of the sleeves 44 and has loose connections with projections 57 on each of the gears 50 so that when the stems 53 are depressed the shafts 54 will be rocked and the bar or rod 56 will be shifted so as to move the sleeves 44 about their pivots and against the tension of the elastic members 51 to position the slot 49 in the sleeves so that the pins 48 on the depressed stems 43 will be moved by the elastic member 47 into the slot 49.

A motor 58 (see Figs. 1 and 5) is provided for imparting motion to the gears 25 and this motor in the present exemplificationofthe invention is shown as a spring motor which is provided with a gear 59 on its periphery and this gear 59 meshes with a gear 60 on a shaft 61, which is journaled in suitable supports 62. This shaft 61 is adapted to impart a variable degree of rotation to a shaft 63. which latter is arranged adjacent the shaft 61 and preferably in advance thereof. Secured to the shaft 63 and for rotation therewithis a series of gears 64 and selector mechanisms may be provided for controlling the degree of rotation of the shaft 63.

Any number of these selector mechanisms may be provided but in the present exenr plilication ofthe invention nine are employed, one for each of the nine numeral l-tevs 65 of the typewriter corresponding in values from 1 to 9. The construction and operation of each of these selector mechanisms are the same and therefore the specific description of one will apply equally as well to them all. They each comprise a sleeve 66, which is mounted upon the shaft 61 for rotation therewith and for sliding adjustment longitudinally on the shaft (see Figs. 2 and 7) and the sleeve is provided with peripheral spaced ribs 67. A onetoothed gear 68 is secured to the sleeve 66 and a mutilated gear 69 is also secured tothe sleeve. The mutilated gears 69 are provided with a different number of teeth, that is to say, each of the mutilated gears is provided with a number of teeth corresponding to the number of the numeral key 65 of the typewriter, to which it is connected, as will be understood. An upright sleeve 70 is rotatably mounted in a suitable support 71 and is provided with a gear portion 72 (see also Fig. which meshes with the ribs 67 on the sleeve 66. An elastic member 73 is connected to an extension 74 on the sleeve by one extremity and is anchored as at 75 to a fixed support. The tendency of this elastic member 73 is to normally rotate the sleeve 70 and the gear 72 so as to move the sleeve 66 on the shaft 61 to bring the corresponding gear 69 into a position to mesh with the gear 64.

The sleeve is adjusted on the shaft 61 to move the gear 69 out of actuating position with respect to the gear 64 by means of an arm 76 which is connected to a rock shaft 77 and this arm engages a projection 78 on the sleeve 70 to rotate the sleeve and the gear 72 in the opposite direction against the tension of the elastic member 73 when the shaft 77 is rocked in one direction. The gear 69 is locked in its non-meshing or inactive position by means of a stem '79 which is provided with a pin 80 normally seated in a slot 81 in the sleeve 70 and adapted to be moved out of the slot when the stem is raised. Actuating or numeral keys 82 are arovided for shifting the stems 79 and these keys are connected to a lever or arm 83 which is pivotally supported intermediate its ends as at 84 and one extremity is pivotally connected as at 85 to the stem of the key 82. The stem '79 is pivotally connected as at 86 to the other end of the arm at a point remote from the extremity of the arm. An elastic member 87 is provided which tends normally to restore the key and to move the stem 79 in a direction to cause the pin 80 to enter the slot 81 in the sleeve 70.

It will thus be seen that when any one of the gears 69 is shifted by the operation of the corresponding key the shaft 6 will. be rotated a number of steps of rotation corresponding to the number represented by the key 82. which is depressed. The motor 58 is adapted to be inermittently released by escapement mechanism substantially like that disclosed in m application above referred to. A link is connected at one extremity to the escapement to rock it about its pivot 92 and by its other extremity to a dog 94, which is secured intermediate its ends to a rock shaft 95.

one for each of the arms or levers 83, and the free extremitles of these dogs or fingers project into the path of movement of a projection 97 on the extremity of the arms or levers 83 adjacent the point of pivotal connection 86 of the stem 79 with the arm 83. One of these dogs or-fingers is provided for each of the arms or levers so that when the latter is rockedby means of the key 82 to shift the stem 79 to release the mutilated gear 69 and thereby permit the latter to be adjusted into operating position with respect .to the gear 6 1, the shaft 95 will also be rocked, the parts being so timed that the gear 69 will assume an operating posltion before the shaft 95 is rocked. As the shaft 95 isrocked, the

escapement arms

87, 88,

will be rocked about their point of pivotal support to release the motor 58 and when thus released the motor will make one step of rotation. The connection between the motor and the shaft 61 is so proportioned that on each step of rotation of the motor, the shaft 61 will make one complete rotation and at the completion of this movement, the shaft 7 7 will be rocked to release the gear 69 which has previously been rendered active and permit the latter to be shifted to its inactive position on the shaft 61.

The escapement mechanism is returned to normal position under control of the shaft 61 acting'through the medium of the cams 105, said cams acting in precisely the same manner and through connections s1m 1lar to those set forth in detail in my 'applicatlon Serial No, 517,300, above referred to, sald operation being as follows:

The shaft 61 is driven through a complete revolution on each step of movement of the motor. This motor is connected by means of the gear 59, Figs. 1 and 5, to pinion on the shaft 61. The ratio between the gear this instance five pins (only four of which are shown in Fig. 6, because of the presence of the arm 127 in said figure); In 'orderto permit the gear 59 to rotate, the arm 88,

which normally engages a pin 91 is moved out of position by one of the numeral keys 123, Fig. 6, to allow the pin to escape.

In order to limit the movement of the gear 59,a-fter 1t 1s moved a 811111016111; amount,

to rotate the shaft 61 a full revolution, the arm 88 is moved into the path of the next approaching pin. This is accomplished by the arm 88, which is rigidly mounted on the shaft 77, which shaft 77 is rocked by the cams 105. Connected to the arm 88 is a link 88, which, by a pin-and-slot connection with the arm 87, moves said arm 87, and, on account of the rigid connection of this arm 87 with the arm 88, the arm 88 is also moved to a position in front of the advancing pin 91; the timing of the parts being such that the arm 88 is moved in time toposition the arm 88 in front of said advancing pin 91, to stop the motor at the end of one step of movement of the gear 59. This action is repeated on the depression of each key, the gear 59 making one fifth of the rotation each time a key is depressed. In this connection, it will be noted that the arm 106,

shaft 77, arm 88 and link 88 constitute, in

effect, part of the escapement mechanism, in so far as their manner of functioning is concerned.

During the rotation of the'shaft 61, the actuating gears% are moved toward the registers or totalizers so that the

gear

25 ,101 loosely mounted on the shaft 77 and these arms are connected indirectly by means of links 102 to arms 103 which latter are secured to the shaft 38 so that when the shaft 61 is rotated the cams 100 will engage the arms 101 and rock the latter about the shaft 77 which will in turn rock the shaft 38 in one direction through the medium of the links 102 and arms 103. Elastic members 104: are provided which tend to return the

arms

101 and 103 when the low portion of the cams 10.0 is presented to the arms 101 and these elastic members also tend to move the gears 25 laterally away from the gears 23. Cams or projections 105 are also secured to the shaft 61 and are adapted to engage arms 106 which latter are secured to the shaft 77 (see Figs. 5 and 7) and are for the purpose of rocking the shaft 77 to cause the arms 7 6 secured thereon to engage the projections 78 on the sleeves to rotate the latter against the tension of the elastic member 73 so as to position the slot'81 in the sleeve to receive thepin or projection 80 on the stem 79. i

In 'order to lock the remaining keys 82 against actuation when one'of the said keys has been actuated, a locking plate or memher 107 is provided and is supported by the arms 101 loosely mounted on -shaft 77. WV hen shaft 61 is rotated, cams 100 thereon will engage and rock arms 101 and thus bring locking plate 107 into play (see Figs. 1, 2, 5 and 7). This locking plate is provided with recesses adapted to stand astride of the stems 79 and a pin 108 similar to the pin 80 is provided on each of the stems and spaced from the pin 80 so that the plate will pass therebetween, as shown in Fig. 2, to lock the keys against actuation.

The key action of the typewriter is shown to be of the regular Underwood type and consists of the keys '65 which actuate through their levers bell cranks 200, so that the latter will swing type bars 201 upwardly and rearwardly against the front side of aplaten 202 on the carriage 109. The carriage is given a step-by-step letter feeding movement at the actuation of each of the keys 65, by having a heel 203 on each of the type-bars 201 come in engagement with the universal shift frame 20%, which carries a pair of pa-wls 205 engaging and controlling the movement of an escapement wheel 206. Secured to move with the escapement wheel 206, there is provided a pinion 207 which meshes with a rack 208 carried by the carriage 109. The pawl 205, which is normally in engagement with the escapement wheel 206, has a broken joint, so that while it holds the escapement wheel from moving when the carriage 109 tends to run forward under the tension of a spring barrel 209, it will permit a return movement of the carriage, and thus a backward rota-- tion of the escapement wheel 206 when the carriage is driven by the pinion 111 which engages the rack 112.

hen any one of the keys 82 has been actuated the stem 79 will be shifted so as to move the pin or projection 108 to a position above the plate 107 so that when the latter is actuated it will pass below the pin 108 and lock this key in an actuated position while at the same time the remaining keys will be locked against actuation by the plate 107 passing above the pins 108 on the stems corresponding thereto.

The carriage 24 and the supported mechanism including the traveling actuating gears 25 is adapted to be advanced by means of the typewriter carriage 109 through the medium of a shaft 110 which is provided with a gear 111 (see particularly Figs. 1 and 14c) meshing with a rack 112 on the typeivriter carriage. A gear 113 is also connected with the shaft 110 and this gear meshes with a segment 11 1 onan arm or lever 115 which latter is pivoted intermediate its ends at 116. The forward end of the arm or lever 115 is provided with a rack 117, which latter meshes with a rack 118 secured to and supported by the carriage 24, so that it will be apparent that as the typewriter carriage advances motion will be imparted to the shaft 110 to rotate the latter and this in turn will move the arm or lever 115 about its pivot 116 through the medium of the gear and rack 113, 114:, and will ad vance the carriage 2 1 through the medium of the intermeshing gears or

racks

117, 118.

As the selector mechanisms which include the gears 69 are rendered active by the keys 32 in the manner already set forth, the corresponding keys 65 of the typewriter will be actuated by means of the one-toothed gear 68, the tooth of which latter is adapted to engage the extremity 119 of an arm or lever 120 which is pivotally supported intermediate its ends as at 121 so that the extremity 119 will project into the path of movement of the tooth on the gear 68. The other extremity of this arm or lever is connected by means of a connection 122 to the respective keys 65 so as to operate the latter against the tension of springs 185.

After the carriage 109 of the typewriter has been advanced, it may be returned from any position to which it has been advanced to its original or starting position by means of a key 123, (see Figs. 1 and 6) which key operates an arm or lever 121 pivotally supported intermediate its ends as at 125, and one extremity of this arm or lever is provided with a projection 126, into the path of movement of which the dog 94: projects so that when the key is depressed, the

escapement arms

87, 88, will be rocked in a manner similar to that already described to release the motor 58.

As the typewriter carriage 109 is advanced in the ordinary and usual manner by the operation of the keys 65, this advancing movement will be communicated to an arm or lever 127 (see particularly Figs. 1, 6 and 14:) and which lever is pivotally supported intermediate its ends as 128 to a suitable support 129 on the base 22. One extremity of this arm or lever is provided with a toothed segment 130 which meshes with a gear 131 and to which gear is secured a gear 132. This latter gear 132 meshes with a gear 133 on the shaft 131; and this shaft 131 receives its motion through the medium of intermcshing gears 135, 136, the gear 136 being secured to an upright shaft 137. The shaft 137 receives its motion from the gear 111. which meshes with a gear 138 on the shaft 137. The other end 139 of the arm or lever 127 is adapted to be moved toward a cam 1410 which is loosely mounted on the shaft 61. This cam 110 is secured to a disk 111 which is also loosely mounted on the shaft 61 and clutch mechanism is provided for locking the cam 140 for rotation with the shaft 61. Any suitable clutch mechanism may be provided but the mechanism shown comprises a star or toothed gear 142, which is secured to the shaft 61 for rotation therewith. A dog 1 13 is pivotally supported by the disk 141 and an elastic member 144 is provided which tends normally to throw the dog 143 into engagement with the star or toothed wheel 142. This clutch mechanism is adapted to be actuated by the operation of the key 123 when the latter is depressed to rock the

escapement arms

87, 88. In order to accomplish this result there is Provided a second dog 145 which is pivoted to a fixed sup port 146 and one extremity is adapted to engage a shoulder 147 on the dog 143 to move the latter out of engagement with the star or toothed wheel 142 and against t is tension of the elastic member 144. The other end of the dog 145 is connected by means of a link 148 to the arm or lever 124. Thus it will be seen that when the key 123 ishdepressed to move the dog 145 from the position shown in Fig; 6 and out of engagement with the dog 143, the latter will be released and the elastic member will move it into engagement with the star or toothed wheel 142 to lockthe disk 141 and cam 140 for rotation with the shaft 61. The extremity 139 of the arm or lever 127 willbe moved toward the cam 140 a distance corresponding to the extent of the advancing movement of the carriage 109 of the typewriter so that when the key123 is depressed and the cam 140 rotated with the shaft 61, the cam will engage the extremity 139 of the arm or lever 127, thereby raising or moving the end 130 in the opposite direction which will reverse the direction of rotation of theshaft 137 to move the carriage 109 back to the initial or starting position.

When the key 123 is released the dog 143 will be automatically shifted by the dog 145 to release the clutch mechanism.

All of the above described parts, however, with the exception of the mechanism for returning the typewriter carriage to its initial or starting position, forms no part of the present invention but forms the SllbjGC't-dnittter of the above referred to application.

It is the intention of the present application to provide means whereby the typewriter carriage may be returned to its initial or starting positions from any point of its advancement and also to provide means whereby the typewriter carriage may be returned to any point between the point to which it has been advanced and its initial or starting position so as to tabulate the amounts, at the will of the operator, and also to utilize the selector mechanisms which impart a variable movement to the shaft 63, for thus returning the typewriter carriage to the intermediate positions. In order to acco1nplish this and also to prevent the operation of the typewriter keys 65 during this return movement of the typewriter carriage, mech anism must be provided for shifting the arms or levers 120 so that the extremities 119 thereof will be moved out of the path of movement ofthe tooth on'the one-toothed gears 68; As has already been explained,

the movement of the traveling actuating mechanism ofthe totalizers or registers in order to change their denominational relation to the numberbearing members of the totalizers, is controlled by the advancement of the typewriter carriage. This advancehas secured thereon, so as to rotate there with, a pair of spring-pressedpawls 150, which engage a two-toothed ratchet 151v secured to the gear 113. Once in every halfa revolution corresponding to ten letter-feeding movements of the typewriter carriage, the pawls 150 come into engagement with stationary trippers 151 which disengage the pawls from the ratchet'151, permitting the spring 149 to return the lever 115 while the gear 113 rotates freely. The traveling actuating gears 25 are mounted upon a support or frame so that they will be moved toward and away from the gears 23 of the totalizers or registers 20, in a direction transverse to the axis of rotation of the gears 25, by the operation of the shaft 61, which latter is rotated by the motor 58. The shaft 61 re tates the cam .100, rocking the arm 101 which indirectly moves the link 102 to rock the shaft 38, which swings the arms 39 forward, thereby rocking the frame, which carries the gears 25, about the shaft 28 as a pivot. It is therefore desirable, when tabulating by the backward movement of the typewriter carriage 109, to render this shifting mechanism of the traveling actuating gears inactive so that they will not'be moved toward and away from the totalizer. As the gears 25 and the drum 32 are rotated from the shaft 63, which is driven by the motor and either the gears152, 153, 154 or the

gears

155, 156, according to the direction of rotation desired of the number bearing members or wheels of the totalizers or registers for'the purpose of registering debits or credits, these gears 25 will be rotated during the return movement of the carriage 109, and the locking'or carrying members 34 of the totalizers would be actuated so that they would not assume proper positions to correctly ac tuate the number bearing members of the registers. In order to'obviate this, mechanism is provided for rendering the drum 32 in active during the return movement of the typewriter carriage.

I The mechanisms for accomplishing these results will now be described.

The gear 152 (see particularly Figs. 1, and 16' to 13 inclusive) is mounted loosely upon the shaft 63- as well as the gear 155 to which the gear is connected. A gear 157 is also loosely mounted on the shaft 63 and spaced from the gear 152. The adjacent faces of the

gears

152, 157, are provided with a plurality of apertures 158, and a clutch member or collar 159 is mounted upon the shaft 63 between the

gears

152, 157. This clutch member or collar is splined to the shaft 63 for rotation therewith and is adapted to be shifted on the shaft longitudinally thereof and toward and away from ea eh of the

gears

152, 157. Projecting laterally from each face of the clutch member 159 are spaced pins or projections 160 which are adapted to enter the apertures 158 in the respective gears 152. 157. These gears are spaced from each other a su-tlicient distance to permit the clutch member 159 to be shiftedto such a position that when the pins or projections 166 on one face enter the apertures 158 on the respective" gears 152, 157, the pins or projections 166 on the opposite face wi l be disconnected from: the respective gears or moved out of the recesses therein, so that when one of the gears is locked forrotation with the shaft 63. the other free to rotate thereon. The clutch member 159 is adapted to be shifted by means of a key 165 through the intermediary of a bell crank lever 161, one arm: of which is formed into a yoke having projections adapted to enter a circumferential groove or slot in the periphery of the clutch member in the ordinary and well known manner. The other arm of the bell crank lever is connected by means of a. pinand slot connection 162. 163, with the stem 16& of the key 165 and the slot 16-3 is preferably so arranged that when the key 165 is depressed the bell crank lever 161 will move the clutch member 159 to lock the gear 157 to the shaft 63. An elastic member 166, suchas a coil spring or the like, is provided, one end of which is connected to the yoke arm of the bell crank lever and the other end is anchored to a suitable fixed support and tends normally to shift the hell crank lever 161 to move the clutch member 159 to lock the gear 152 to the shaft 63. Thus it will be seen that when the key 165 is depressed, the gear 157 will be locked to the shaft 63 so that the motion of the shaft will .be communicated to the typewriter carriage writer carriage.

lVhile it is desirable to have the typewriter carriage control the advancing stepby-step movement of the computing or totalizer carriage, it is not desirable to have the return movement of the typewriter carriage act on the computing or totalizer carriage advancing means, whether the carriage is returned a predetermined amount or an indeterminate amount. There is therefore provided a loose connection between the shaft 110 and the typewriter carriage 109. For this purpose, as best shown in Figs. 9 and 14,- the pinion 111 which meshes with the rack 112 on the typewriter carriage 109 is loosely mounted on the shaft 116 and connected thereto by a one-way pawl and ratchet connection, including the pawl 171 and the .ratchet wheel 172, the former of which is secured to the shaft 116 and the latter of which is secured to the pinion 111. This, then. enables the shaft 137 through the gear 136 and the pinion 111, toreturn the typewriter carriage 169 without driving the shaft 116 and the connected mechanism.

the clutch member 159 is shifted to lock the gear 157 to the shaft the key 165 is employed for shifting the arms or levers 126 into an inactive position so that the extremities 119 thereof will be moved out of the path of movement of the tooth of the one-toothed gear 68. This may be accmnplishcd in the following manner: The stem 161- (see Fig. 13) of the key 165 is of some length and is provided with rack teeth 173 which mesh with a toothed cylinder or barrel 17-1: rotatably mounted in suitable supports 175 and arranged at right angles to the stem 16 1.

Secured to and for rotation with the cylinder or barrel 17 1 is a gear 176 which meshes with the gear 177 on a shaft 178 (see particularly Figs. 1, 2, 3 and 13). This shaft 178 is journalec ii and the support and is provided with a crank arm 186. Loosely mounted upon a suitable support, preferably the shaft 121, are arms 182 which are connected by a cross bar or rod 183. This bar or rod is arranged above and projects across the arms 120 forward of the pivot thereof and the arm 182 is connected to one of the arms 186 by means of a link or connection 161: so that when the key 165 is depressed, the cylinder or barrel 174 will be rotated and this rotary motion will be imparted to the shaft 178 to more the arm 186 thereon downwardly. This movement of the arm 1.86 will draw the bar or rod 183 into engagement with the extremities of the arms 126 to depress the latter to more them out of the path of movement of the tooth of the one-toothed gears 68. These parts will be held in this position as long as the key 165 is held depressed, but when the key is released, the elastic member 166 will return the key and at the i a suitable bearing 179 same time will shift the clutch member 159 to unlock the gear 157 and lock the gear 152 and the return movement of the key will also raise the arm 180 to elevate the bar or rod 183 to permit the extremities 119 of the arms 7 mediary of the link 102 and the arm 103. a

This connection is indirect and interruptable, as will now be explained. The link 102 which is connected to the arm 103 (see par ticularly Figs. 5 and 7) is connected to an arm 186 which is loosely mounted upon the shaft 77 adjacentand independent of the :arm 101. This arm 186 is provided wlth' a clutch face 187 and the arm 101 is provided with a clutch face 188 spaced from and opposed to the clutch face 187 on the arm 186. A clutch member 189 is arranged between the clutch faces 187, 188, and is adapted to be shifted with respect thereto. This clutch member is provided with faces which cooperate with the clutch faces 187, 188, and is adapted to be so shifted that when in the position shown in Fig. 7 the arm 186 will be locked to the arm 101 so that by the oscillation of the latter, the arm 186 will be' rocked to rock the shaft 38 to move the actuating gears 25 toward the gears 23 of the totalizers or registers. The arm 186 may be moved in the opposite direction in any suitable manner, such as by means of an elastic member or spr ng 190 whlch 1s connected to the arm and to a suitable fixed support. The clutch member 189 is adapted to be shifted so that the arm 186 will be dis connected from the arm 101 so that the oscillation of the latter will not affect the arm 186, and as the latter will not be shifted by the actuation of the arm 101 it will be apparentthat the shaft 38 will remain idle and T therefore the gears 25 will not be shifted toward or away from the totalizersa The shifting of this'clutch member 189, as above stated, is accomplished by the actuation of the'key 165 through the medium of a bar or rod 191, one end of which is connected to a suitable yoke 192 (see Fig. 7) having connection with the clutch member 189 in the ordinary and well known manner. This'bar or rod 191 is arranged at right angles to the stem 16 1 of the key 165 (see Figs. 4 and 13) and also to the cylinder orbarrel 174 and moves in suitable guides or bearings such as the support 62' and a bearing 193.

member 189 will be correspondingly shifted 1 in the direction according to the: direction of rotation of the barrel or cylinder; When the key 165 is released and is returned to its normal position by the elastic member 166 in the manner already set forth, it will be apparent that the barrel or cylinder 175 will be rotated in the opposite direction and this 7 rotation of the barrel or cylinder will shift the bar or rod 191 and theclutch member 189 in the opposite direction so as tov lock the arm 186 for operation by the arm 101.

Should it so happen that one of the keys 82 is accidentally depressed or mischievously actuated at the same time that it is desired to return the typewriter carriage to its initial or starting position by the actuation of the key 123, it will be apparent that the key of the typewriter, corresponding to the key 82 which has been accidentally actuated, would be operated and this would tend to cause the typewriter carriage to advance,

while'the actuation of the key 123'would therefore to obviate this difliculty and to prevent the locking of the parts, mechanism is provided wherebythe actuation of the key 123 will actuate the bar or rod 183 to depress or move the extremities 119 of the arms or levers 120 out of the paths of movement of the teeth of the one-toothed gears 68 and thereby render the advancing mechanism of the typewriter carriage inactive, even though both of said keys are simultaneously actuated. Suitable mechanisms for accomplishing this result will now be described, reference being had particularly to Figs. 3, 6 and 7. Secured to the shaft 178 is an arm 195, connected to which, by one extremity, is a link 196. The other extremity of the link is provided with a slot 197 and this extremity of the link is connected ,to an extension 198 on the arm or lever 124 by means of a pin or projection 199 which extends into the slot to form aloose connection. When the key 123 is de pressed, the pin 199 will engage the end of the slot 197 in the link 196 to rock the shaft 178 in a direction to lower the bar or rod 183 into engagement with the extremities 119 of the arms or levers 120 to depress the latter and hold'them depressed until the key 123 is released.

shaft 17 8 is thus rocked the link Will be moved and the key 123 willremain stationmy and will I be prevented from bobbing up and down. The

pin andslot connection

162, 163, on the stem t164-of:the key 165 is also provided so asto permit-the keyto move without effecting the actuation of the parts when the shaft 178 is rocked by, the operation of the arms or levers .120 through the medium of the one-toothed gears 68. These pin-and-slot connections .162, 168 and 197, 199 also-prevent thesoperationof one ofthe keys 128,165 and the associatedmechanism from the other.

From the-above description it isthought that-the operation will :be fully understood butbrieflystated i't'is as follows; After the desired key of the series etl which renders a predetermined one ,or-moreof the-.- totalizers active, has been actuated, the key of the series -82;is then operated. This willrender the corresponding-mutilated gear 69.0perative and at the same time the motor 58 will be released and will start tooperate. The operation of this motor-will drive the shaft 61 andthe cams 100thereon will'rock the arms 101 to rock theshaft 38 and movethe gears '25 intoposition totmesh with the respectivegears 23of the totalizers or registers. A variable motion will be imparted to'the shaft 63-1according to the key .ofthe series .82 actuated, .and also according to the number of teeth-on .the operatinggear 69. This will actuate theiregister and the key of the series 65 which corresponds to the keyofthe series 82 which has been actuated. This operation will be repeated until theaamounts havebeen registered and recorded. The typewriter carriage .109 is advanced intermittently by the operation of the keys65 in the ordinary and well known vmanner. During :the advancing movement of the carriage .109the traveling actuating gears 25 are correspondingly shifted longitudinall with respect to the totalizers20 during the firstnine steps of movement of the carriage. During. the tenth step ofmovementof the carriage forwardly, the traveling actuating I gears willbe returned to their normal or. initial starting position. During the.advancing movement of the carriage 109, the shaft .134: will be. rotated, and this will in turn rotate the gears 132,131, .to move the arm 127 about its pivot so that thefree extremity thereof will be moved toward the cam 1 10. lVhenit is desired toreturn the typewriter carriage'to its. original or starting nosition from any point to which it has been advanced, the key 123 is actuated and this key will lock the cam 140 forrotation with the shaft 61, at the same time the

escapement arms

87, 88, .will be-rocked to release the motor 58 to permit it to make one step of rotation. lVith. the. parts. in. this position, the rotation of the shaft 61 will rotate the cam 140, which latter willengage the extremity of the arm 127 tomovc it in the opposite direction, whichmovement will impart a reverse rotary movement totheshaft 1341 and the typewriter carriage will be thus returned. When the-key'123 is actuated,.the bar or member 188will be depressed to move the extremities 119 ofthe arms or levers 120 outpfthe path ofmovement of the teeth of the one-toothed gear 68 to prevent the actuation of the-keys 65 of the typewriter proper in the event-one of the keys of the series 82 has been accidentally actuated. lVhen it is desired to returnthe typewriter carriage 109-to a predetermined pointintermediate the initial or starting point and the point to whichit has been advanced by the employment of the selector mechanisms and which mechanisms impart a variable motion to-theshaft 63, the key l65iisj actuatedto u-nlock:the gear .152-from the shaft 63 and'to lock the gear 157 to the shaft 63, thereby rendering-the drum or cylinder 32 inactive. At the same time-the bar or rod 183 will be depressed to move the extremities 119 of the ,arms;120 out. of.the paths of 'movementof the one-toothed .qears 68 and thezactuation of thiskey 165 will. also disconnect the arm 186,-fr0m the arm 101 byshiftingthe clutch member 189 so that the actuating gears will not be imoved toward. the totalizers, or registers :20. .lVith the parts thus adjusted, the key of the series 82, corresponding to the number ofspaces it is desired to returnthe carriage 109, is actuated. The:actuation of thiskey will render. the corresponding mutilated gear v69 operativeand; at the same timethe shaft 95 will be rocked by means. of the. engagement of thepin .or projection 97 on the arm or lever 83 with the dog 96. The rocking of this shaft 95 will shift-the

escapementarms

87, 88, to release: the motor 58, thereby permitting the latter to move one step of rota tion. This rotary motion of the motor will be imparted to the shaft 63 through the medium of thegear 6 L whichunesheswith the mutilated gear 69 that has been locked toithe shaft 61. ,During this operation the key 165 mustbe held depressed and when thus held, the variable motion of the shaft 63 will be. imparted to the shaft 134 through themedium of the

gears

157, 167, shaft 168 and gears 169, 170, to rotate the shaft 134 in a direction to return the carriage 109 a number of steps equal to the number of steps of rotation imparted to the shaft 68. After the typewriter carriage has been thus returned, the cam-tooth 105 (see Fig. 5) on the shaft 61 will rock the arm 106 secured to the shaft 77 so as to swing the arm '76 (see 'Fig. 2), secured on the shaft 77,into engagement withthe pin 78, whereby the gear 69 will bereleased from the shaft 61 and thekey 82returned to its normal-position. WVhenthe key 165 is released, the gear 157 will be unlocked from the shaft 68 and the gear 152 will be locked thereto so that the motion of the shaft 63 will be imparted to the drum or cylinder 32 when the shaft is rotated with the parts in this position. The connection between the

arms

101 and 186 will be'restablished so that the actuating gears may be moved to mesh with the gears 23 of the totalizers or registers and the bar orrod 183 will be elevated so as to permit the'extremities 119 of the arms or levers 120 to move to such positions that any one of them may be actuated to operate the corresponding keys 65 of the typewriter whenone'of'the'mutilated gears 69 is rendered active by the operation of therespective keys 82.

In order that the invention might be fully understood, the details of the foregoing embodiment thereofhave been thus specifically described, but what is claimed as new is 1. In a calculating machine, calculating mechanism including actuating mechanism,

means connecting the actuating mechanism with a key controlled escapement carriage for advancement thereby, selector mechanisms for controlling the operationiof the said actuating mechanism and also the actuation of the keys, and" means also controlled byt said selector mechanisms forreturning the carriage to a predetermined point from 7 any point of its advancement.

'2. Ina calculating machine, calculating mechanism including actuating. mechanism, means connecting the actuating mechanism with a'key controlled escapement carriage for advancement thereby, selector mecha nisms for controlling the operation of the said actuating mechanism and also the actuation of the keys, means also controlled by said selector mechanisms for returning the carriage to a predetermined point from any point of its advancement, and means for ren dering the key. actuating mechanism inactive during such return of the carriage.

3. In a calculating machine, calculating mechanism including actuating mechanism, a key controlled escap ement carriage, selector mechanisms vtor controlling the operation of said actuating mechanism, operating connections between the said selector mechanisms and the respective keys, means operatively connected with the said selector mechanisms for returning the carriage thereby, andmeans for rendering the said actuating mechanism inactive during such return of the carriage.

4. In a calculating machine, calculating mechanism including actuating mechanism, a key'controlled escapement carriage, selector mechanisms for co'ntrollingthe operation of said actuating mechanism, operating connections between the said selector mechanisins "and the respective keys, means oper atively connected with the said selector anism' inactive during the return 01": the

carriage, means for also rendering the said actuating mechanism inactive 5 during such movement of'the carriage, and means common to both ofthe last said means for controlling the same. a

6. In a calculating machine, calculating mechanism including actuating mechanism, a keycontrolled escapement carriage, selector mechanisms for controlling the operation of said actuating mechanism, operating connections between the said'selector mechanisms and the respective keys, means operatively connected with the"said selector mechanisms for returning the carriage thereby, means for rendering the recording key mechanism inactive during the return of the carriage, means for also rendering the said actuating mechanism inactive during such movement ofthe carriage, and means common to both of the last said means for simultaneously controlling the same.

7. In a calculating machine, the combination with calculating mechanism including actuating means, of a key-controlled escapement carriage, selectormechanism for controll ng the operatlon of said actuating means, carriage-returning mechanism, means for controlling said mechanism to return the carriage from any point of its advancement, and means for also controlling said carriagereturn'ing mechanism from said selector mechanism to return the carriage to a predetermined point from any point of its advancement.

8. In acalculating machine, the combina-- tion with calculating mechanism including actuating means, of a key-controlled escapement carriage, selector mechanism for controlling the operation of said actuating means, carriage-returning mechanism including a device adapted to be set by the advancement of the carriage, means for controlling said carriage-returning mechanism through said device to return the carriage to any point of its advancement, and means for also controlling said carriage-returning mechanism from said selector mechanism to return the carriage to a predetermined point from any point of its advancement.

9. In a calculating machine, the combination with calculating mechanism including actuating means, of a key-controlled escapement carriage, selector mechanism for controlling the operation of said actuating means, carriage-returning mechanism including a device adapted to be set by the advancement of the carriage for returning the latter, normally inactive mechanism for acting on said device to return the carriage, means for controlling said device at will, and means for also controlling said carriagereturning mechanism from said selector mechanism to return the carriage to a predetermined point from any point of its-advancement.

:10. In a calculating machine, calculating mechanism including actuating mechanism, a key controlled escapement carriage, selector mechanisms for controlling the operation of the said actuating mechanism, operating connections between the selector mechanisms and the said keys for operating thelatter, and meanscooperating with the said selector mechanisms for returning the carriage to a predetermined point from any point of its advancement.

11. In a calculating machine, calculating mechanism including actuating mechanism, a key controlled escapement carriage, selector mechanisms for controlling the operation of the said'actuating mechanism, operating connections between the selector mechanisms and the said keys for operating the-latter,ineans cooperating with the said selector mechanisms for returning the carriage to a predetermined point from any point of its advancement, and means for controlling the last said means at will.

12. In a calculating machine, calculating mechanism including actuating mechanism, a key controlled escapement carriage, selector mechanisms for controlling the operation of the said actuating mechanism, operating connections between the selector mechanisms and the saidkeysfor operating the latter, means cooperating with the said selector mechanisms for returning the carriage to a predetermined point from any point of-its advancement, means for controlling the last saidmeans, and means for rendering the said actuating mechanism inactive during such return of the carriage.

13.111 a calculating machine, calculating mechanism including actuating mechanism, a key controlled escapement carriage, selector mechanisms for controlling the operation of the said actuating mechanism, operating connections between the s'electormechanisms and the said keys for operating the latter, means cotiperating with the said selector mechanisms for returning the carriage to a predetermined point from any'point of its advancement, and means for rendering the said connections inactive during such return of the carriage.

1 1. In a calculating machine, calculating mechanism including actuating mechanism, a key controlled escapement carriage, selector mechanisms for controlling the operation of the said actuating mechanism, operating connections between the selector mechanisms and the said keys for operating the latter, means cooperating with the said selector mechanisms for returning the carriage to a predetermined point from any point of its advancement, means for rendering the said connections inactive during the return of the carriage, and means for rendering the said actuating means inactive during such return movement.

15. In a calculating machine, calculating mechanism including actuating mechanism, a key controlled escapement carriage, selector mechanisn'is for controlling the operation of the said actuating mechanism, operating connections bet-ween the selector mechanisms and the keys of the typewriter for operating the latter, means cooperating with the said selector mechanisms for returning the typewriter carriage'to a predeterminedpoint from any point of its advancement, means for rendering the said connections inactive during the return of the carriage, means for rendering the said actuating means inactive during such movement of the carriage and means common to both of thelast two said means for controlling the latter at will.

16. In a calculating machine, calculating mechanism including actuating means, a key controlled escapement carriage, selector mechanisms, an operating connection between the latter and the said actuating means, operating connections between the selector mechanisms and the said keys for actuating thelatter, keys for controlling the 110 selector mechanisms, an operating connection-betweenthe selector mechanisms and the carriage, whereby the operation of the selector mechanism will return the carriage, and means forrendering one of the con nections between the selector mechanisms and the said actuating means and the carriage respectively, active and the other inactive.

17. In a calculating machine, registering mechanism, actuating means therefor movable toward and away from the'registering mechanism into and out of operating position, shifting mechanism for imparting such movements to the actuating means, selector mechanisms, a key controlled escapement carriage, operating connections between the selector mechanisms and the keys for actuating the latter, means operatively related to the said selector mechanisms for returning 1-30 the carriage to a predetermined point from its point ofadvancement, .lliettllS for con-, trolling thelast said means to return the carriage, and mechanism for rendering the said, shifting mechanism inactive during such return movement of the carriage.

l8. In'a calculating machine, registering mechanism, actuating means: therefor movable toward and away from the registering mechanism into and out of operating position, shifting mechanism for imparting such movements to ,the actuating means, selector mechanisms, a key controlled escapement carriage, operating connections between the selector mechanisms and the carriage actuating keys for actuating the latter, means operat-ively related to the said selector mechanisms for returning the cars riage to a predetermined point from" its point of advancement, means for controlling thelast said means to returnthe carriage, and mechanisms for respectively rendering said shifting mechanism and the said connections' inactive during such return of the carriage. V I I 19. In a calculating machine, registering mechanism, actuating means thereformova-ble toward and away from theregistering niechanisminto and out vof operating posi-' tion, shifting mechanism for imparting such movements to the actuating means, selector mechanisms, a key controlled escapement carriage, operating connections between the selector mechanisms and the carriage actuatmg keys for actuating the latter, means oper-.

atively related to the said selector mech anisms for returning the'carriage to a predetermined point from its point of advancement, means for controlling the last said means to return the carriage,'a key, and mechanisms adapted to be operated thereby for respectively rendering said shifting mechanism and the said connections inactive during such return of the carriage. i

20. In a calculating machine, calculating mechanism embodying actuating means, selector mechanism for controlling the latter, a key controlled escapement carriage, operating connections between the selector mechanisms and the carriage actuating keys for actuating thelatten: a source of power forthe selector mechanisms, keys for controlling said selector mechanisms and said source of power, means adapted to be set by the advancement of the carriage for returning the latter, means operatively related to the said source of power for operating the last said means to return the carriage, and means for controlling the last said means and the source of power to actuate the former.

21. In a calculating machine, calculating mechanism embodying actuating means, selector mechanisms for controlling the latter, a key controlled escapement carriage, op-

the carriageymeans for controlling the last said means .and the source of power to ac tuate the former, and means operatively related to the last. said controlling means for rendering the said connections inactive dur ing the return of the carriage, V V v. V l

22. In a calculating machine, calculating mechanism; embodying actuating means, se-

lector mechanisms for controlling thelat-r ter, a key controlled, escapement carriage, operat ng connections between 7 the selector mechanisms andthe carriage actuating keys for actuating the latter, a source of power witlrwhich the said selector mechanisms are operatively; connected, mechanism opera tively" connected with the selector, mechanisms for returning the carriage to a predetermined point, means for rendering active one of the respective connections between the source of power and. the selector mechanisms, and the first said actuating means and the other inactive, and means common to the selector mechanisms and the said source of power forcontrolling both.

"23. In a calculatingmachine, calculating mechanism embodying actuating means, selector mechanisms for controlling the latter, key controlled escapement carriage, operating connections between the selector mechanisms and the carriage actuating keys for actuating the latter, a source of power with which jthe'said selector mechanisms are op eratively connected, mechanism operatively connected with the selector mechanisms for returning the carriage to a predetermined point, means for rendering active one of the respective connections between the source of power and the selector mechanisms and the first said actuating meansand the other inactive, and means for controlling the said source of powerat will. 24.. In a calculating machine, calculatlng mechanlsm embodylng actuating means, se

lector mechanisms for controlling the latter, 7

a key controlled escapement carriage, operating connections between the selector mech anisms and the carriage actuating keys for actuating the latter, a source of power with which the said selector mechanisms are operatively connected, mechanism operatively connected with the selector mechanisms for returning the carriage to a predetermined point, means for rendering active one of the respective connections between thesourcc of power-and the selector mechanisms, and the first said actuating means and the Other inactive; means common to the selector mechanisms and the said source of power for controlling both, and means for rendering inactive the operating. connections between the selector mechanisms and the carriage actuating keys for rendering the latter inactive during the return movement of the carriage.

25. In a calculating machine, calculating mechanism, actuating mechanism therefor, selector mechanisms for controlling the lat ter, a key controlled escapement carriage, operating connections between the selector mechanisms and the key mechanism, means including a gear connection between the selector mechanisms and the first said actuating means for operating the latter, means also including a gear connection between the selector mechanisms and the carriage for returning the latter to a predetermined point, and means for rendering one of said gear connections active and the other inactive.

26. In a calculating machine, calculating mechanism, actuating mechanism therefor, selector mechanisms for controlling the lat ter, a. key controlled escapement carriage, operating connections between the selector mechanisms and the key mechanism, means including a gear connection between the se lector mechanisms and the said actuating means for operating the latter, means also including a gear connection between the se lector mechanisms and the carriage for returning the latter to a predetermined point, and means common to both of said connections for simultaneously rendering one active and the other inactive.

27. In a calculating machine, calculating mechanism, actuating mechanism therefor, selector mechanisms for controlling the latter, a key controlled escapement carriage,

operating connections between the selector mechanisms and the key mechanism. means including a gear connection between the selector mechanisms and the said actuating means for operating the latter, means also including a gear connection between the selector mechanisms and the carriage for returning the latter to a predetermined point, a clutch element common to both of said gear connections and means for shifting said element to render one of said connections active and the other inactive. I

28. In a calculating machine, calculating mechanism, actuating mechanism therefor, selector mechanisms for controlling the latter, a key controlled escapement carriage, operating connections between the selector mechanisms and the key mechanism, means including a gear connection between the selector mechanisms and the said actuating means for operating the latter, means also including a gear connection between the se lector mechanisms and the carriage for returning the latter to a predetermined point, means including an actuating element for rendering one of said gear connections active and the other inactive and means operatively related to the said element for rendering the connections between the selector mechanisms and the key mechanism inactive when the second recited gear connection is rendered active.

29. In a calculating machine, calculating mechanism, actuating mechanism therefor movable toward and away from the calculating mechanism into and out of operating position, shifting mechanism for imparting such movements to the actuating mechanism, a source of power for actuating the shifting mechanism, a key controlled escapement carriage, selector mechanisms operatively connected with said source of power, means including a gear connection between the selector mechanisms and the first said actuating mechanism for operating the latter,

means also including a gear connection between the carriage and the said selector mechanism for returning the carriage, controlling mechanism for rendering one of the said gear connections active and the other inactive, and mechanisms actuated by said controlling mechanism for rendering the connections between the selector mechanisms and the key mechanism inactive and for also rendering the said shifting mechanism in-- active'when the second recited gear connection is rendered active.

30. In a calculating machine, calculating mechanism, actuating mechanism therefor movable toward and away from the calculating mechanism into and out of operating position, shitting mechanism for imparting such movements to the actuating mechanism, a source of power for actuating the shifting mechanism, a key controlled escapement carriage, selector mechanisms operatively connected with said source of power, means including a gear connection between the se lector mechanisms and the first said actuating mechanism for operating the latter, means also including a gear connection between the carriage and the said selector IllGCl'lZllllSHl for returning the carriage, controlling mechanism for rendering one of the said gear-connections active and the other inactive, mechanisms actuated by said controlling mechanism for rendering the connections between the selector mechanisms and the key mechanism inactive and for also rendering the said shifting mechanism inactive when the second recited gear connection is rendered active, and means included in the gear connection between the selector mechanisms and said first-mentioned actuating mechanism for controlling said source of power at will.

a 31. In a calculating machine, calculating