US1278687A - Adding-machine. - Google Patents

Description

H. LANDSIEDEL.

ADDING MACHINE.

APPLlcmoN FILED ria. 2s. me.

vPanted Sept. 10, 1918.

5 'sains-SHEET l.

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ADDING MACHINE. APPLICATION-FILED FEB. 28. lglv.

` Patented Sept. 10, 19.18.

5 SHEETS-SHEET 2.

Mill/lm.

` H. LANDSIEDEL.

ADDING MACHINE.

APPLICATIQN msn ria. 2a. 191e.

1,278,687. Patentedsept. 10,1918. I

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H. LANDSIEDEL.

ADDING MACHINE.

APPLICATION FILED rzs. 2a. I9Is.

Patented Sept. 10, 1918.

5 SHEETS-SHEET 4.

H. LANDSIEDtL.

ADDING MACHINE.

APPLICATION FILED FEB. 28. I9I6.

Patented Sept. 10,1918.

5 SHEETS-SHEET 5.

UNTTED sTATEs PATENT OFFICE.

HARRY LANDSIEDEL, OF CINCINNATI, OHIO. ASSIGNOR TO THE DALTON ADDING MACHINE COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

ADDING-MACHINE Specification of Letters Patent. Patented Sept. 10, 1918:

Application led February 28, 1916. -Seria1No. 80,939.

To all whom t may concern.'

Be it known that I, HARRY LANDsmDEL, a citizen of the United States, residing at the city of Cincinnati, county of Hamilton, and State of Ohio, have invented a new and useful Adding-Machine, of which the following is a specification.

This invention relates to adding machines.

hfany of the features of the present invention have specific reference to adding machines of that type in which there is a movable carriage having pins mounted therein which are settable to represent the numbers to be added, and in reference to these features the object of the invention is to provide novel mechanism to increase the accuracy and efficiency of the machine by devices under control of the number-setting mechanism for locking the clearing mechanism so that, after the number-setting mechanism has started to operate, the clearing mechanism will be prevented from operation, in combination with an actuating member under control of the adding mechanism for restoring said devices to position to enable the clearing mechanism to operate. In connection with the mechanism for the attainment of this object provision is made for requiring an additional operation of the main shaft of the machine after the last number or item has been listed, in order to complete the act of transferring or carrying from lower to higher order before the clearing mechanism may be operated.

Other features of the invention have reference to the clearing mechanism and in respect of these features, the object of the present invntion is to provide devices under control of the adding and clearing mechanisms and including a. part of the printing mechanism for printing a sign or symbol to indicate a clear condition of the adding mechanism.

A further object of the invention is to provide a machine including adding and clearing and printing mechanisms and in which the printing mechanism 1s operable to print the lists of the numbers which are then automatically added by the adding mechanism, in combination With clearing mechanism for cooperating with the adding mechanism,y

and means controlled by the adding mechanism for positioning a part of the printing mechanism for operationy so that when the controlling devices of the printing mechanisln are operated after the adding mechanism has been cleared and while the clearing mechanism is in position for coperation with the adding mechanism, one part of the mechanism which operates in the printing of items and the totals thereof will be operated-to print a character indicating a clear condition of the adding mechanism, to the end that the vuser of the machine ma be affirmatively informed of the clear condltion of the adding mechanism. In the specic form of the' invention illustrated in the drawings, I utilize one of the type-driving` hammers which is used in the printing of numbers and the totals thereof, as the typedriving hammer which is operated to print the character indicating a clear condition of the adding mechanism. In this particular, the invention is`further differentiated from machines heretofore used by the novel combination of elements constituting the train controlled in this manner for the purposes mentioned, is itself entirely novel.

Another object of the invention has reference to the devices optionally operable by the operator subsequent to the setting up of a number preliminary to adding the same, whereby the operator may restore the set up parts to their idle positions, thus erasing or eliminating from the machine any number after it has been set up and prior to addition thereof. These optionally operable devices, however, do not releasethe clearing mechanism but they are arranged in such relation to the locking devices, which are under control of the number-setting mechanism, that such locking devices are left in position to prevent operation of the clearing mechanism; so that an operation of the main shaft of the machine, to move the adding mechanism to and from operative engagement with the recording mechanism, is

. necessary to release the locking devices from the clearing mechanism.

With the foregoing and other objects in -of printing mechanism so that in so far as 'I am aware the form of printing mechanism,

view, all of which will appear as the description proceeds, I have embodied my invention in a preferred form which I have illustrated in the accompanying drawings, in which- Figure 1 is a side elevation ofthe adding and listing and clearing mechanisms in their normal positions.

Fig. 2 is a side elevation of the clearing mechanism set for operation and illustrating the connectionscontrolled thereby for coperating with the locking devices to prevent the setting of numbers.`

Fig. 3 is a detailed View illustrating the locking devices which have been positioned by operation of the number-setting mechanism to prevent operation of the clearing mechanism.

Fig. 4 is a detailed view of the same parts showing their position after the numbersetting devices have returned to idle pos1 tion, leaving the locking devices 1n engagement with the clearing mechanism so as to require an additional operation of the controlling elements of the machine to complete .the act 'of transferring or carrying in the Figs. 8, 9 and 10 are detailed views of different parts of the locking devices.

Fig. 11 is a perspective view of the conne'ctions on the main shaft for restoring the movable carriage to its idle position as an incident to the return of the main shaft after each operation.

Fig. 12 is a detailed view of the spring connections illustrated in Fig. 11.'

Fig. 13 is a perspective view of the clearing devices.

Fig. 14 is a detailed view of a link and its actuating lever which serves to position the adding mechanism for adding and clearing operations.

Figs. 15 and 16 are detailed views of the devices which operate 'the link to position the adding mechanism for adding operations.

Fig. 17 is a view illustrating the mechanism under control of the adding mechanism for printing a character to indicate a clear condition of said mechanism; in this view the adding mechanism is in its normal position in connection with the operating racks,

and when retained in this position by the clearing mechanism the train of connections therefrom will cause the printing mechanism to print a character as an incident to the operation of the main shaft.

Fig. 18 is a view of the same parts illustrating the manner in which the connections under control -of the adding mechanism, for printing a character to indicate a clear oondition of the machine, are disabled or rendered inoperative as an incident to the rocking of the main shaft when the clearing mechanism is not in position for clearing the adding mechanism.

The numbers to be added and listed are introduced into themachine by operation of the numeral keys l which are operative to set pins 2 to represent numbers to be added and listed. The pins 2 are mounted in a transversely movable carriage 3 supported by rails 4 upon which said carriage is laterally movable. The carriage is moved step-by-step laterally in one direction as an incident to the operation of the numeral keys so as to place the rows of pins 2 suc-` cessively over the ends of the numeral key levers. This step-by-step movementl may be controlled by any appropriate escapement mechanism which, however, is not illustrated in the drawings, because the escapement mechanism per se constitutes no part of the present invention, it being sufficient for present purposes to understand that the carriage is movable laterally in the usual manner, as required to place the rows of pins successively in position over the ends of the key levers.

A link 5 has one end pivoted -to the carriage and the opposite end pivoted to an upright rock shaft 7, so that by turning the shaft 7 in one direction the carriage will be moved as required to place the rows of pins successively over the key levers and by turning the shaft 7 in the other direction the carriage will be restored to its starting point. A spring 8 has one end connected to an arm 9 attached to the rock shaft and the other end connected to an appropriate member and is effective to actuate the shaft 7 in the direction required to move the carriage to place the rows of pins successively adjacent to the key levers.

The pins 2 constitute differential stops for limiting movement of the type-carriers 10 and the racks l1 which are the actuators of the adding mechanism. The type-carriers and racks are pivotally supported by a rock shaft 12 and are actuated in a forward dircction by springs 13 connecting extensions on the type-carriers with a stationary part 14. The type-carriers and racks are Vrestored to their starting points `after each operation by a rod l5 supported by two arms 16, the upper end of which are attachedto the rock shaft 12. One of the arms 16 is ing points.

1,27s,esv

by a handle 20, or otherwise, as desired, to

cause the arms 16 to carry the rod 15 away fromithe type-carriers and racks and permit the springs 13 to operate them.

The type-carriers have type 21 at their vforward 'ends which, by the operation described, are selectively adjustable in printing position adjacentl to the platen 22, After the type-carriers have become stationary the type thereon, which are alined at the printing line, are driven to print by the opera-tion of hammers 23 and, a'fter the printing has been eii'ected, the type-carriers are restored to their` starting pointsLby retraction of the ina/in spring 19, returning the shaft' 17 and its connections to their start- The hammers 23 and the type-carriers are equal in number. The hammers are pivotally supported upon a rod 24 extending transversely in front of the type-carriers. Each of the hammers is connected with a corresponding coupling 25 by a projection 26 on the lower end of the hammer extending into a notch`27 in the coupling, so that when the couplings are operated by their actuators, the hammers will also be operated.

The forward end of each coupling is carried by a comb-plate 28 and the rear or inner end .of each coupling rests upon a corresponding positioning lever 29. In 'normal position the rear or inner ends of the couplings and the forward ends of the lel vers 29 are held depressed by springs 30 connected to the couplings and `exerting their power to draw them inwardly and downwardly. The couplings and levers 29 are retained in proper relative position by a The levers 29 are supported coinb-plate 31. by a shaft 32 and the rear ends of said levers are adjacent to the lower surfaces of the type-carriers, so that when any type-carrier moves forward beyond the position required tov place the zero type at the printing line a shoulder 33 on the type-carrier so moving will engage the rear or inner end of the lever 29 and thereby raise the forward end `of said lever from the position illustrated in Fi 18 to the position illustrated in Fig. 1%.

For each coupling and its corresponding hammer there is an actuator 34. Said actuators are pivotally supported by a rock shaft 35 and are provided with extensions 36 which are of such length that they may move over the rear ends of the couplings 25 A without engaging therewith when said couplings are in their lower positions, but when the couplings are 'raised by contact of the shoulders 33 with the rear ends of the levers 29 as described, or otherwise, the ends of said couplings are in the path of move-ment of the-extensions 36 on the actuators. Each of the actuators is connected with a rod 37 by a spring 38, the rod 37 being supported betweentwo arms 39 attached to the rock shaft 35.

The main shaft 17 'of the machine has an arm 40 which is connected by a link 41 with a lever 42 pivoted on the rock shaft 35. On forward movement of the main shaft 17 the lower end of the lever 42 is-moved in a forward direction and, by engaging a pin 43 onvan arm 44 which is attached to the rock sha-ft 35, such movement of the lever 42 actuates the shaft 35 to raise the forward ends of the arms 39 as required to extend or tension the springs 38. During this operation movement of the hammers and their couplings andthe actuators 34 is prevented.

The device for preventing movement of the hammers and their couplingsv and the vactuators includes a revoluble member 45 which is arcuate in cross section and which extends transversely in front of the hammers and constitutes an abutment for the projection 46 at the lower ends of the hammers. In its forward position the arm 44 becomes latched with a member 47 so that, when the shaft 1T starts on its return movement. the lever 42 will be moved rearwardly relative to the arm 44. A pin 48 on the lower end of the lever 42 engages with a lever 49 pivoted on the arm 44 and causes the upper end of said lever 49 to engage a projection 5() on an arm 51 attached to the end of the member 45, thereby turning said member 45 to position to permit the hammers to operate, at which time the actuators 34 are operated b v their springs 38 to force the couplings 25 forwardly to drive the hammers against the type. As the lower end of the lever 42 approaches nearly to its starting point, a cam 52 on the lower end of said lever rubs against and disengages vthe meinber 4i' from the shoulder on the arm 44 with which it was engaged. The spring 53 connecting the lever 49 with the pin 43 had been expanded when the arm 44 had been moved forwardly and. when the member 47 is released from the arm 44 b v the cam 52. the sprlng 53 retracts and moves the arm 44 rearwardly to its normal position thereby turning the shaft 35 in a direction tolower the arm 39 attached thereto and cause the rod 54 carried by said arms to depress the actuatois 34. The member 45 is restored to idle position after being released v,from thelever 49 by a spring 55 connecting the arm 51 with the abutment pin 56. and the return movement of the member 45 also retraots understanding of the additional subjectmatter which I will now describe.

The adding wheels 57, which are of usual construction, are independently revoluble vupon a shaft 58 supported by a. swinging frame 59 by operation of which the adding wheels are engaged with and disengaged from the actuating racks 11. The shaft 58 is retained in proper position by links 60 whose rear ends are connected to the shaft 58 and whose front Aends are connected to a rod 61. Y

The device for swinging the frame 59 Iincludes a link 62 (Figs. 1, 2, 13 and 14), hav- ,ing its rear end pivoted to one of the members of the frame 59 and its forward end adjacent toa .lever 63 on a rock shaft 64. A pin 65 on' the link 62 rests upon a lever 66 attachedto a rock shaft 67, said pin 65 being connected with the lever `66 by a spring 68. The lever 66 is held yieldingly in a raised position by a spring 69 connecting an arm of said lever with another part of the machine. .When the link 62 is supported in its raised position/by the lever 66 a notch 70 (Figs. 13 and 14), in said link receives a p in 71 on the lever 63, as a result offwhich connection turning of the shaft 64 in one direction will actuate the link 62 to move the frame 59 as required to lower the shaft 58 to disengageF the adding wheels 57 from the actuating racks.

The shaft 64 has a bifurcated lever 72 attached thereto, and said shaft also supports a pivoted member 73 having a pm 74 eX- tending between the arms of the lever 72. A spring 75, connected to the upper end of the member 73, serves to hold said member normally in its idle position and to coperate with said member to enable it to perform its functions of rocking the shaft 64.

A segmental arm 76 attached to the shaft 17 engages the lower end of the member 73 .on forward turning of the shaft 17 and thereby turns the shaft 64 in the direction required to cause the lever 63 thereon to actuate the link 62 in order to operate the frame 59 in the direction which will disengage the wheels 57 from their actuating racks. The forward turning of the shaft 17 moves the segmental arm 76 beyond the member 73, at which time the sprin 75 retracts to move the member 73 the istance permitted by the pin 74 between the arms of the lever 72, so that when the shaft 17 makes its return movement the segmental arm 76 will engage the member 73 and turn the shaft 64, in the direction opposite from shaft 64 to move the adding that in which it'was first turned, a ,distance sufficient to cause the connections from said wheels into mesh with the racks before the rod 15 starts the racks on their return movement.

From the foregoingit will be clear that the adding wheels are disengaged from the racks ast an incident to the turning of the shaft 17in a forward direction and that the disengagement is effected prior to any for- 'ward movement'of the racks. The adding wheelsare rengaged with the racks as an incident to the backward turning of the shaft 17 prior to any return movement of the racks so that the entire return movement of the racks willl be utilized to actuate latter and this is effected by the mechanism which I will now describe.

The key lever 77 has a depending arm l which is pivoted upon a support 78 and has an upwardly extending arm provided with a slot 79 which receives al pin 8O extending from an arm 81 attached to. the rock shaft 67. By depressing the forward end of the lever 77 the shaft 67 will be turned in oppositionto thespring 69, thus moving downwardly the rear end of the lever 66 and causing the spring 68 to move the forward end of the link 62 downwardly with the lever 66.

This disconnects the link 62 from the pin 71 on the upper end of the lever 63 and leaves the lever 63 free to operate without the link 62 so that the adding wheels will actuating remain in engagement with the racks during their forward movement, thus clearing the adding mechanism. When the lever 63 completes the extent of its movement by the turning of the shaft 64 as a result of the forward movement of the segmental plate 76, a"

pin 82 on the lower end of the' lever 63 becomes seated in a notch 83 in the lower edge of the link 62, so that when the segmental arm 76 'starts on its return movement the lever" 63 will actuate the link 62 rearwardly thus-moving the lframe 59 as required to disengage the adding wheels from the actuating .racks and leaving theaddin wheels clear.

This clearing action will be e ected by holding the key lever 77 depressed during the return movement of the racksbut if it is dei sired to retain the .total in the adding wheels after the total hasbeen printed by the operation above described, this may be done by retaining the adding wheels in engagement with the racks during the return movement of the latter, thus resetting the adding wheels in position to represent the total which had been printed. The adding wheelsl will be retained in-mesh with the racks by. f

releasing the key lever 77 and permitting the sprlng 69 to retract to actuate the parts controlled thereby t0 disengage the link 62 from the pin 8:?, thus leaving the shaft 6l free to turn on its return movement without actuating the link 62.

' A releasable latch is provided for the clearing mechanism which will be released automatically to enable the parts to return to their normal positions so that the adding wheels will be retained in mesh with the racks. The latch mentioned includes a pivoted member 8l (Figs. 1 and 2) having a hook portion on its upper end to engage a projection 85 on a depending portion of the lever 66, as illustrated in Fig. 2. The member 84 is actuated b v the spring 69 to maintain its connection with the projection 85 so' that when the key lever 77 is depressed to the position illustrated in Fig. 2 it will be retained in its depressed position until the racks complete their forward movement, at

. which time the member 8l will be released lso from the projection 85 b v a pin 86 extending from the arm S7 attached to the shaft 17, said pin operating against an adjacent eX- tension of the member 84. Thus the total represented in the wheels 57 and printed in the manner described will be automatically retained inthe adding wheels. However, if it is desired to clear the adding mechanism this may be done by holding the key lever 77 in its depressed position until after the pin 86 moves away from the extension of the .member 8.1.. thus leaving the member 84 in latched engagement with the projection 85.

The usual detainingplate 88 is pivoted uponthe carriage 3 and engages the usual depending portions 89 of the racks to prevent movement of the racks. except those corresponding to the digits represented in the carriage.. However. when it is desired to operate the racks in clearing operations it is necessary to release the detaining plate 88 and this is eected by a device under control of the key lever 77. The lever 66 has an upward extension to which a link 90 is pivoted and the rear end of said link operates in a slot within a support 91. A ,depending arm 92 on the link is over the plate 88 so( that. rearward movement of the link 90 causesV said arm 92 to depress the plate 88 to discngage the same from the extensions 89 of the racks. Thus the racks are released and are enabled -to operate in clearing operations.

Referring next to the devices under conj trol of the number-setting mechanism for locking the clearing mechanism to prevent operation thereof after operation of any part of the number-setting mechanlsm and prior to the colnpletion of the transferring or carrying operations` attention is directed to the fact that the'locking action of the locking devices is effected by the numbersetting mechanism. and that the initial portion of the unlockingaction is effected by the return movement of the number-setting devices, and is subsequently completed 'by parts under control of the adding mechanism by a subsequentl operation, so that the complete adding func-tions of the adding -mechanism must be completed before the locking devices will be release-d vfrom the l carrying or transferring is completed and when no part of the number-setting mechanism has been operated after completion of the carrying or transferring operation, the projection 96 may move freely over' the arm 94. However, when the number-setting mechanism is operated the arm 91 is engaged with the project-ion 96 to prevent operation thereof until the number-setting mechanism is returned to idle position and the act of transferring or carrying has been completed. The means for enabling the arm 91 to engage the projection 96 includes a Cam plate 97 attached to the upper end of the rock shaft 7 which actuates the differential mechanism, said cam plate being arranged to cooperate with a depending arm 98 constituting apart of the lock control device. This member of the lock control device is also pivoted upon the support 93 and in addition to the arm 98 includes an arm 99 having a laterally extending pin 100 connected with a pin 101 on an arm of the lock device by a retractile spring 102.

Vhen the carriage 3 is in its home or idle position the cam 9T enga-ges the edge of the varm 98 and thereby holds the arm 99 in its lowest adjustment, placing the spring 10:7J under tension. A link 103 has its forward end pivoted toone of the members of the frame 59 and its rear end resting upon the pin 100. A pin lOl extends laterally trom the link 103 and is arranged to engage against the rear edge of the arm 95 to actuate the lockingdevice. as required to hold the arm 9-1 thereof in position to permit operation of the link 90 by the clearing mechamsm. 'e

The lirst. leftwavrd step by the carriage 3, when any of the numeral keys 1 is operated, results in the shaft 7 moving the cam 97 (Fig. 6) out of engagementwith the arm 98, whereupon the spring 102 raises thearm 99 and thereby raises the rear end of the link 103, which carries the pin 101 above the upper end of the arm 95, permitting partial retraction of the spring 102, which raises the arm 94 of the locking device into engagement with the projection 96, as illustrated in Fig. 3. Thus it will be seen that as anfincident to the opera-tion of any part of the number-setting mechanism, which necessarily involv a movement of the rock shaft iis 7, the locking mechanism will be set to prevent operation of the clearing mechanism. Movement of the member 98-99 is limited by a pin 105 extending into a slot in the arm 98. Locking action of the .locking 'devices to prevent operation of the clearing mechanism is thus controlled entirely by the number-setting mechanism, while the initial portion of the unlocking action to permit operation of the clearing mechanism is elfected by the return of the shaft 7 and is completed by the adding mechanism. This unlocking of the locking devices consists first in the return of the cam 97 by the shaft 7 to cause the cam to depress the arm 99 to its normal position; and second in a movement of the adding mechanism to operate the link 103 to disengage the arm 94 from the projection 96. When the locking device is placed in engagement with the projection 96,- as a result of, the cam 97 moving away from the arm 98, the rear extremity of the link 103, which rests upon the pin 100, raises the pin 104 above the upper end of the arm 95 (Fig.

- 3), thus permittingv the spring 102 to engage the arm 94 with the projection 96. After the member 99 has been lowered by the return movement of the cam 97 the pin 104 remains seated upon the upper end of the arm 95,v thus leaving the arm 94 in .engagennent with the projection 96. An additional rocking operation of the shaft 17, resulting in .swinging the adding mechanism frame 59, lcauses the latter to move the link 103 rearwardly until the pin 104 drops |behindthe -rar edge of the arm 95, and forward movement of the frame 59 draws forwardly with it the link 103, causing the pin 104 to engage.

the arm 95 and actuate it adistance sucient to disengage the arm 94 from the projection 96. f This additional operation of the shaft 17 and of the adding mechanism is the usual operation to complete the act of carrying or tra erring so that the unlocking of the c caring mechanism is made dependent upon t e completion of the act of vcarrying or transferring, and the unlocking device is, therefore, placed under control of the adding mechanism.

The devices under control of the clearing mechanism for preventing operation of the number -setting mechanism, swinging shouldered lates 106 pivoted to the comtb-plate 107, Fig. 1) which plates are pressed laterally by depression of the key lever 77 so as to position the shoulders on said platesk under the numeral key levers, thus preventing depression of said levers and preventing operation of the numbersetting mechanism. A

The devices for restoring the'. carriage 3 to its'starting point as an incidentto the listing or adding-of any number set up in said carriage are actuated by the shaft 17.

include the An arm 108 (Figs. 1, 2, 5 and 11) is pivoted on the shaft 17 at the side of the arm 87, and has a pin 109 extending over the upper end of the arm 87 between the two projec tions 110 which permit limited movement of the arm 108 with reference to the arm 87., A hook 111 is pivotedvnear the upper end of the arm 108 and is formed with an extension 112 which, when the shaft 17 is in its normal position, engages with an abutment 113. A pin 114 on the hook is engaged by -the connection 115 of a spring 116, the lower end of which spring is similarly connected with a projection 117 on the arm 108, so that the tendency of the spring 116 is to raise theV forward end of the hook 111. The projection 117 is connected with the base of the machine by a spring 118 so that when the shaft 17 isturned in a forward direction the spring 118 holds the arm 108 stationary until the projection 110 at the rear ot the pin'109 engages said pin 109 and thereby moves the arm 108 in oppositionto the spring 118. Forward movement of the arm 108 obviously permits the hook 111 to beraised by the spring 116 so that at the proper time said hook 111 engages with a pin 119 extending from a lever 120, the upper end of which is connected with a rock shaft 121. The lower end ofthe lever 120 is retained in a forward position by a spring 122 connecting said lever with a part of the machine frame. A link 123 connects the lower end of the lever 120 with an arm 124 pivoted to the shaft 7 and provided with a depending lug 125 which is in the same arcuate plane witha lug 126 on the arm 9.

As a result of these connections when theA hook 111 is engaged with the pin 119 the relturn movementv of the shaft 17 will operate the link 123V and cause the lug 125 to engage the lug 126 and thereby turn the shaft 7 and restore the carriage 3 toits starting point.' As the shaft 17 approaches its idle positionV the extension 112 engages the abutment 113 so that the hook 111 is eventually disengaged from the pin 119, thus permitting the spring 122 to retract and restore the.

lever 120 and the link 123 to their idle positions. This operation of restoring the carriage 3 to its starting point, after each number is listed or added, is automatic, but may be prevented at the option of the operator chine and provided with a finger key 129.

A spring 130 connects the lever 128 with the devices for remachine frame and restores said leverto idle position after it has been operated to actuate the carriage.

Referring next to the mechanism under control of the adding mechanism for causing the printing of a character to indicate a clear condition of the adding mechanism, it j is appropriate to mention that the character is printed by a part of the usual number printing mechanism, and that I do not resortto such expedients as the provision of additional printing devices which are ilseless in the listing of numbersL lIn the particular embodiment illustrated I employ the zero type on the type-carrier in units order to printY a zero character to indicate the clear Condition of the adding mechanism. The positioning lever 29 in units order has a lateral projection 131 over which extends a lever 132 supported by vthe rod 61. It is obvious that b v depression of the rear end of the lever 132 the positioning lever 29 will be operated to raise the coupling 25 in units order into the path of movement of the projecting'part. 36 of the actuator 31. so thatthe spring 38 of the actuator in units order will be extended oro tensioned by the connections which aie operated b v the rock shaft 1T.: when the latterI is turned in a forward direction. Furthermore, when the member 45 is turned to release the printing hammers the actuator 34 in units order will drive the corresponding hammer in a printing operation. causing said hammer to strike the. zero type on the type-carrier in units order an drive the same to print.

An arm `133 extending obliquely downwardly from the rod 61. is integral with the ylever 132. The lever 134 is pivoted on a support 135. The forward end of the lever 131frests upon the upper edge of the arni 133 and the rear end of said lever 134 is adapted to be engaged by a project-ion 136 on one of the links 60. These parts are arranged so that when the adding mechanism is in engagement with the. actuating racks 11 the projection 136 will hold the lever 13-1 in position to depress the rear end of the lever 132 (Fig: 17)` so that the `,p'ositioningl ;1; lever 29 in Liinits order supports the corresponding coupling 25 in position to operate the printing hammer. Thus it is seen that when the addi-iig mechanism is clear a perinanent indication of this fact may be givoen b v positioning the clearing mechanism for operation and operating the controlling shaft 17. f

This character to indicate a clear condi- .tion of the machine will not be printed as a result of a mere idle or useless operation of'the main shaft, vwithout positioning the 132 to permit the forward 'end of the positioning leverI Q9 to be depressed by the weight of the parts. assisted by retraction i of the spring 30. As illustrated in Fig. 1S,

the adding mechanism is moved out ot' engagement with the actuating racks 11 when' the main shaft is operated without the clearing mechanism -having been positioned. Thus the projection 136 releases the lever 134L and permits the lever 132-to be raised by a spring 137 connecting the arin 133 wit-h a stationary part, which is in such W'liat I claim and desire to secure by Letters Patent of the United States is 1. In an adding machine. adding wheels` .a series of racks for operating said adding wheels. and springs for operating said racks in one direction in. adding and clearing operations, in combination with a plate for engaging and holding said racks. mechanism for moving said plate in one direction to selected positions to release selected numbers of said racks for adding operations. a device for moving said plate in another direction to release Isaid racks for clearing operations, an-element controlled b v a part of' said .mechanism for preventing move- ,ment of said device in each of several positions of said plate. aspring for engaging said element with said device to prevent movement thereof, and a member for disen-- gaging said element from said device to enable said device to be moved to release said plate from said racks. c 2. In an Aadding machine. adding mechanism, racks for operating said adding mech-y anism.' aA plate for engaging and preventing i operation of said racks` mechanism for moving said plate in one direction to selected positions to release selected numbers of said racks for adding operations, clearing mechanism for coperating said adding mechanism and said racks iii clearing operations. means actuated by a part of saidy clearingmechanjsm to move said plate in another` direction to release said racks and to enable said racks 4to operate in clearing operations, a device controlled by a part 'of said plate-moving mechanism adapted to engage a part of said clearing mechanism to lprevent operation thereof in each of several positions of said plate, means for engaging saiddvice with a partA of the clearing mechanism, and an actuating memberl controlled by theV adding mechanism for releasing said device from the clearing mechanism toV enable the clearing mechanism to operate. i Y

3. In an adding machine, adding` mechanism, racks for actuating said adding mechanism in adding and clearing operations, an element for engaging and preventing movement of said racks in clearing operations, mechanism for moving Said elementin one direction to selected positions to release selected numbers of said racks for adding,

operations, clearing mechanism operable to move said element in another direction to release said element from said racks to enoperating said adding Wheels in adding and Y clearing operations, an element for engaging and preventing operation of said racks in clearing operations, mechanism for movingsaid element in one direction to selected positions to release selected numbers of.

said racks for adding operations, clearing `mechanism -for coperating said racks andV adding wheels in clearing operations, means operated by a part of the clearing mechanism to move said element in another direction out of position to engage said racks to enable said rack to operate said clearing mechanism, a device controlled by a part of said moving mechanism for engaging and preventing movement of said clearing mechanism when transferring is incomplete in the adding mechanism,and a member controlled`by the adding mechanism to release said device as an incident tothe completion of transferring in the adding mechanism to` enable theclearing mechanism to operate after transferring has been completed.`

v 5. In an adding machine, adding mechanism operable in adding and clearing operations, racks for operating said adding dmechanism in adding and clearing operations, an element for holding said, racks from movement in one direction, mechanism for moving said racks in one direction to selected o positions to enable selected numbers of said racks to operatev in adding' operations, and clearing mechanism for moving said element in another direction to enable said racks to operate in clearing operations and for coperating said racks and adding mechamsm, in combination with devices conmeans actuated by the adding mechanism Afor releasing said devices as an incident to the completion of transferring in the adding mechanism to enable clearing mechanism to be operated thereafter.

6. In an adding machine, adding Wheels, racks for operating the adding wheels, an element for holding said racks, mechanism formoving said element `to selected positions in one directionto enable selected numbers of said racks to operate in adding operations, clearing mechanism for moving said element in another direction to enable said racks to operate in clearing operations Afor coperating' with the adding Wheels and racks in clearing operations, a part operated by said clearing mechanism for moving said element to position to enable said racks to operate in clearing operations, a device controlled by said moving mechanism for engaging said part to prevent movement thereof when transferring is incomplete in the adding wheels, a pivoted support for moving the adding Wheels into and out of engagement with the racks, and a member actuated by said support for disengaging said device from said part to enable said part to be operated.

7. In an adding machine. adding wheels, a pivoted frame in which said adding wheels are mounted, racks with which said adding wheels are engaged by movement of said frame, an element for preventing movement of said racks, mechanism for moving said element to selected positions in one direction to enabl selected numbers of said'racks to operate in adding operations, automatic means for operating said frame to disengage said Wheels from said racks when said racks move in one direction, clearing mechanism for holding said frame in `position to retain -said wheels and racks in engagement with each other when said racks move in the .di-

` rection aforesaid, a device controlled by said moving mechanism for engaging and preventing operation of said clearing mechanism when transferring is incomplete in the adding wheels, a member -actuated by said frame to disengage said device as an incident to the completion of transferring in the addingwwheels, and means, operated by the clearing mechanism for moving said element in another direction to enable said racks to operate in clearing operations. g

A8. In an adding machine, the combination with a: series of adding wheels, a support for the adding wheels, a series of racks for operating. said wheels in adding and clearing operations, elements for o erating said racks and adding wheels in ad ing operations, an actuator for moving said elements and thereby said racks in a vdirection to operate said adding wheels in adding operations, and clearing mechanism 'for maintaining a cooperative relation betvveen said vvheels and racks in clearing operationsI` otl a device for preventing operation ot the clearing mechanismA` means Afor holding said device in position to prevent operation of said clearing mechanism after each adding operation of said racks,'a member Jfor preventing movement ot' said racks in one direction, and means actuated by the support for the adding wheels, as an incident to an opera-tion of said actuator when said member is holding mechanism for moving said element in another direction to release parts of said mechanisms for clearing operations,ofade vice controlled by said moving means for engaging said member to prevent operation thereof when transferring is incomplete in the adding mechanism, and an actuating member operated b y the adding mechanism for releasingsaid device as an incident to the completion oftransferring in the adding mechanism to enable said device to be actuated by the clearing mechanism to release said element. i

10. lu an adding machine, racks operable in adding and clearing operations. a movable part for engaging and holding said racks` a support for moving said part in one direction to release said racks for addingoperations,means for controlling the movement of said support` a member operable to move said partl in another direction to release said racks for clearing operations, a device controlled by said controlling means for engaging said member, a spring for moving said device into engagement ivith said member. adding mechanism. a supportin which said adding mechanism is mounted for coperation with said racks, and a membe' actuated by said support for releasing said device.

11. In an adding machine, clearing mechanism, a part connected with and movable by said clearing mechanism. a device movable into and out of engagement with said part. a member for discngaging said device from said part, a support upholding said member, and means Jfor moving said support and thereby said member to disengage the latter from said device and enable said device to engage said part.

1Q. In an adding machine, the combina.- tion with vdifferential mechanism, keys for Setting up numbers in the diiiferential mechanism. adding wheels, racks for Operating the adding Wheels in adding and transferring and clearing operations, and means for moving said adding vvheels into and out of engagement with said racks, of clearing mechanism for eiecting cooperation between said racks and said adding Wheels in clearing operations, a device under control of the differential mechanism independently7 of said racks for engaging a part of said clearing mechanism to preventl operation thereof in any position of the racks and after said keys have returned to their idle positions, and a member operated by said adding wheel moving means to disengage said device from the clearing mechanism.

13. In an adding machine, number setting mechanism adapted to have numbers Set up therein and cleared therefrom, keys for setting up numbers in the number setting mechanism, adding Wheels, racks for operating the adding Wheels to add the numbers set up in the number setting mechanism, clearing mechanism for causing said racks and adding Wheels to coperate in clearing operations, a device under control of the number setting mechanism independently of said racks to engage and preventoperation of the clearing mechanism when any number is set up in the number setting mechanism before the racks have been operated in adding operations and also preventing operation of theV clearing mechanism after the racks have been operated in an adding operation in any position of said racks, and a member operated by the adding mechanism in a subsequent operation to engage said device and move the same positively out of engagement with vthe clearing mechanism to enable the clearing mechanism to be operated.

14. In an adding machine, adding and clearing mechanisms, a device movable into engagement with the clearing mechanism to prevent operation thereof. a member holding said device out of engagement with the clearing mechanism, an actuator for moving said member to release said device, a spring for engaging said device with said clearing mechanism when said device is released, keycontrolled means for restoring said actuator to its normal position, and means for operating said member to disengage said device `from the clearing mechanism.

15. In an adding machine. the combination of racks adapted to be operated in adding and clearing operations. and an element holding said racks, of a movable part for releasing said element from said racks, a device for engaging and holding` said part` a member holding said device out'ogt' en-l gagement \vith said part. an actuator for disengaging said member from said device to enable said device to engage said part, a shaft, a cam on said shaft engaging and preventing said actuator from releasing said member from said device, means for turning said shaft in one direction to release said cani rom said actuator, and means for turning said shaft in the opposite diiection to cause said cam t-o restore said actuator to its idle position.

1G. In an adding machine, the combination of number-setting mechanism, adding vvheels, racks for cooperating ivith said number-settiiig mechanism to introduce into the adding vvheels the numbers represented by the nuniber-settiiig mechanism, a part engaging and holding said r; cks and movable out of engagement therevvitli by the numbersetting mechanism, clearing mechanism for coperatiiig said racks and adding ivheels in clearing operations, a device adapted toengage ivitlrthe clearing mechanism to prevent operatioii thereof, a member holding said device out. of engagement, vvith the clearing mechanism, an actuator forv disengagingsaid member from said device, means controlled by the nuinber-setting mechanism for preventing operation of'said actuator and enabling said actuator to operate to disengagev said member from said device as an incident to the setting of a number, manual means for restoring the nuinber-setting mechanism and'said actuator lto idle position, and means for operating' said member to disengage said device from the clearing mechanism.

1T. In an adding machine, clearing mechanism, a device for engaging and pieventing operation of said clearing mechanism, a memberfor holding said device out of engagement vvith said clearing mechanism, an actuator for disengaging said member from said device, means for operating said device into engagementvvith the clearing mechanism when said member is' released, means for restoring said actuator to idle posit-ion, and additional means for operating said member to disengage said device from the clearing mechanism.

18. In an adding machine, mechanism, a pivoted frame, a device for engaging and preventing operation of said clearing mechanism, a member connected vvith said pivoted frame for holding said device disengaged from the clearing mechanism, an actuator for disengaging said member from said device, means for restoring said actuator to idle position, and additional means for operating said pivoted frame and thereby Said member to disengage said device from the clearing mechanism.

19. In an adding machine. cleaiiiig mechanism. adding mechanism controlled b v said clearing mechanism. a pivoted frame. a device for engaging and preventing opei'ation of said clearing mechanism, a member clearing connected with said pivoted frame for holding said device disengaged from said eleariiig mechanism. an actuator for disengaging said member from said device. mechanism holding said actuator ,in position in which said member will remain in engagement ivith said device. means for operating said mechanism to release said actuator. means for operating said actuator to release said member from said device. manual means for operating said mechanism to restore said actuator to idle position, and additional means for operating said frame and therebv said member to disengage said device from the clearing mechanism.

20. In an adding machine, adding and clearing mechanisms, a vdevice for engaging and preventing operation of the clearing' mechanism, a member for holding said device disengaged from the clearing mechanism, an actuator for disengaging said member'from said device. a shaft. a part controlled bv said shaft for holding -said actuator in position in which said member may hold said device disengaged from the clearing mechanism, means for operating said shaft to enable said actuator to disengage said member from said device. manual means for/ operating said shaft to restore the actuator to idle position. and additional means for operating said ineiiibei to diseiigage said device from the clearing mechanism.

21. In an adding machine, clearing mech-v anism, a device for engaging and preventing operation of said clearing mechanism. a member for holding said device disengaged from the clearing mechanism. an actuator for releasing said member vfrom said device. a shaft controlling operation of said actuator, means for operating said shaft in one direction to enable said actuator to operate, manual means for operating said shaft in the opposite direction' to restore said actuator to idle position, and independently operable means for operating said iiieiiiberto disengage said device from the clearing mechanism.

22. In an adding machine. a rock shaft. a carriage connected ivith said rock shaft. an actuator for turning said rock shaft in one direction, a link connected ivith said rock shaft, an additional rock shaft. manual means for rocking the additional rock shaft in one direction and thereb \v rocking the first-mentioned rock shaft to restore the carriage tothe starting point. and a spring for restoring the additional rock shaft to idle position.

In an adding machine. clearing mechanism. a device for engaging and preventing operation of the clearing mechanism. a meinberfor -holding said device out of engagement with the clearing mechanism. an `actuator for disengaging said member from said device. a rock shaft preventing operation. of said actuator, means for turning said shaft in one direction to enable said actuator to operate, an additional rock shaft, manual means for rocking said additional rock shaft in one direction, connections from said adoperation of said clearing mechanism, ay

member holding said device disengaged fioin the clearing mechanism, an actuator for releasing said member from said device, a rock shaft holding said actuator in position in avhich said member is in engagement With said device, means for turning said rock shaft in one direction to enable member holding said device out of engage ment vvith the clearing mechanism, an actuator for disengaging said member from said device, a shaft preventing operation of said actuator, means for turning said shaft in one direction to position to enable said actuator to operate. optionally operable means for turning said shaft in opposite direction to restore said actuator to idle position, a

pivoted frame, and mechanism for operating said pivoted frame and thereby said member to disengage said device from the clearing mechanism.

26. In an adding machine, the combination ivith` printing type, a hammer for cooperating Oith said type to print, and an actuator for said hammer, of a coupling movable to and from position to couple said actuator and said hammer, a lever for moving said coupling to position to couple said actuatorxand hammer, an additional lever foi` operating the one mentioned, and means for operatingsaid additional lever. A

'27. In an adding machine. printing tlvpe, a hammer-for coperating ivithsaid type to effect printing. an actuator .for said hammer, a coupling movable to and from position to connect said actuator and hammer, a lever for moving said. coupling to position to connect said actuator and hammer. an additional lever for operating the one nientione'd, an actuator for said additional lever,` and means for operating said actuator.

28. In an adding machine, a type-carrier movable to and from selected recording positions, type carried by said type-carrier, a hammer for coperating with said type to effect printing, an actuator for said'hammer, a coupling for connecting and disconnecting said actuator and hammer, a lever for moving said coupling to position to connect said actuator and hammer, means whereby said type-carrier when moved to certain recording positions will operate said lever, and means for operating said lever independently of said type-carrier.

29. In an adding machine, type-carriers, adding mechanism operable in adding and clearing operations, hammers for coperatiiig With said type-carriers to print,` actuators for said hammers, couplings for connecting and disconnecting said actuators and hammers, levers for moving said couplings to position to connect saidactuators and hammers, means for operating said levers by said type-carriers, an additional lever for operating one of said levers, and means for operating said additional lever.

30. In an adding machine, the combination with type-carriers, mechanism for operating said type-carriers, and adding mechanism controlled by said type-carriers` ofk hammers for coperatiiig with said typecarriers to effect printing, actuators for said liainmers couplings movable to and from position to connect said actuators and hammers, levers for moving said couplings to position to connect said actuators and' hammers, means for operating said levers by said type-carriers, and means under control of said adding mechanism for opei'ating one of saidlevers to move one of said couplings to position to connect one of said actuators With the` corresponding hammer.

31. In an adding machine, the combination With adding and clearing mechanisms, of a device, for printing a character to indicate a clear condition of the adding mechanism, comprising a type-carrier, a

Atype carried by said type-carrier, a hammer for coperatiiig with said-type to print, an actuator for said hammer, a coupling movable to and from position to connect said actuator and hammer, means for holding said coupling in position in which said actuator and hammer are disconnected, a lever for moving said coupling to position to connect said hammer and actuator, and means oper- Dated by the adding mechanism for operating said lever.

32. In an adding machine, the combination with type carriers movable'to select priiit-ing positions, hammers for coperating with the t vpe on said type-carriers. actuators for said hammers, couplings movable to and from position to connect said hammers and actuators. adding mechanism arranged to cooperate with said type-carriers in adding and clearing operations. mechanism operated b v said type-carriers for moving said couplings to position to connect said actuators and hammers as an incident to the operation of said type-carriers and adding mechanism in adding and clearing operations. and means controlled b v said adding mechanism for moving one ot' couplings to position to connect one of said actuators with the corresponding hammer.

B23. In an adding machine, the combination ot' a type-carrier movable to selected printing positions, a hammer for coperating with the t vpe on said type-carrier in an v of its printing positions. an actuator for said hammer. a coupling for connecting and disconnecting said hammer and actuator, a lever t'or positioning said coupling to connect said actuator and hammer, means whereby said type-carrier will operate said lever when said type-carrier is moved to all except one ot' its printing positions, adding mechanism. and connections under control ot' said adding mechanism for operating said lever to move said coupling to position to connect said hammer and actuator when said type-carrier is moved to that printing position in which said type-carrier will not operate said lever.

34. In an adding machine, the combination with adding and clearingmechanisms. a I vpe. and means for supporting said tvpe in printing position when the adding mechanism is clear. a hammer for driving the type to print. a normally denergized actuator for said hammer. a coupling movable to and from position to connect said actuator and hammer. means` 'controlled by said adding mechanism for moving said coupling to position to connect said actuator and hammer. and means t'or energizing said actuator and operating the same to drive the hammer to print.

In an adding machine, a type. adding mechanism. and clearing mechanism for cooperating said t vpe and adding mechanism, a hammer for driving the type to print. a normall \v deenergizcd actuator for said hammer. a coupling movable to and from position to connect said actuator and hammer, mechanism controlled b v the adding mechanism for moving said coupling to position to connect said actuator and hammer` means for energizing said actuator. a device for preventing operation of said hammer while said' actuator is being energized. and means for releasing said device after said actuator has been energized.

3b. In an adding machine. adding mechanism. a printing type for printingr a character to indicate a clear condition ot' the adding mechanism. and clearing mechanism for clearing the adding mechanism. in combinasaid i tion with a hammer for driving said type to print. a normalhv deenergized actuator for said hammer. a coupling for connecting and disconnecting said hammer and actuator, mechanism controlled Abv the adding mechanism for supporting said coupling in position to connect said actuator and hammer. mechanism for energizing said actuator and operating the same to drive the hammer to print. and a device for restoring said hammer to idle position after operation bv said actuator.

l 3T. In an adding machine. adding mechanism. clearing mechanism for clearing the adding mechanism. a type for printing a character to indicate a clear condition ot' the adding.niechanism. a hammer for coperating with said t vpe to etfect printing. a normall v deenergized actuator for said hammer, mechanism controlled b v the adding mechanism for enabling said actuator and hammer to cooperate, means for energizing said actuator and operating the same to operate said hammer. a device for restoring said actuator to idle position. and an additional device for restoring said hammer to idle position.

3S. In an adding machine. adding mechanism. type-carriers. means for coperating said type-carriers and adding mechanism, hammers for driving the type on said typecarriers to print, normall)Y denergized actuators for said hammers. couplings for connecting and disconnecting said actuators and hammer, levers operable automatically to move said couplings to position to connect said actuators and hammers as an incident to the cooperation of said adding mechanism and typecarriers. means for energizing said actuators. a device for preventing operation of said hammers while said actuators are bevtype on said type carriers to print. a series ot' actuators for said hammers respectively, couplings for connecting and disconnecting said actuators and hammers. means normally holding certain of said couplings in position in which the corresponding hammers and actuators are disconnected. and means normall vv holding -one of said couplings in position in which the corresponding actuator and hammer are connected.

40. In anadding machine, :i series of typ carriers a series of hammers for driving the type on said type carriers to print, normally denergized actuators for said hammers, couplings for connecting and disconnecting said actuators and hammers, means normally holding certain of said couplings in position in which the corresponding hammers and actuators are disconnected, means for moving said couplings to position to connect said actuators and hammers, means normally holding one of said couplings in position to connect the corresponding actuator and hammer, and mechanism for energizing said actuators and operating them to actuate the hammers.

ll. In an adding machine, a series of type-carriers. a series ot' hammers for driving the type to print, normally denergized actuators for` said hammers, couplings for connecting and disconnecting said actuators and hammers` means normally holding certain ot' said couplings in position in which the corresponding actuators and hammers are disconnected, means for holding one of said couplings in position in yvhich the corresponding actuator and hammer are connected. means controlled by the type-carriers for moving the remaining couplings to position to connect the type-carriers and hammers. and mechanism for energizing and operating the actuators which are connected with the corresponding hammers.

l2. In an adding machine, a series of type-carriers, a "series of hammers for driving the type to print, normallyT dengerized actuators for said hammers, couplings for connecting and disconnecting said actuators and hammers, means normally holding certain of said couplings in position in which the corresponding actuators and hammers are disconnected, means for holding one of' said couplings in position `in which the .cor-

` responding actuator and hammer are connccted. means controlled by the type-carriersl for moving the remaining couplings to position to connect the type-carriers and hammers. and mechanism for energizing and operating the actuators Which are connected with the corresponding hammers vvhile the actuators Which are not connected with their hammers remain denergized.

43. In an adding machine, a type-carrier, a hammer lfor driving the type on said type carrier to print, a normally denergized actuator therefor. a coupling for connecting and disconnecting said actuator and hammer` a lever for supporting said coupling in position to connect said actuator and hammer. a device for holding said lever in position to support said coupling in position to connect said actuator and hammer, means for energizing said actuator. a device holding said hammeii vvhile said actuator is being energized. means for releasing said device to enable said -actuator to operate said hammer, and means for operating said is connected vvith said hammer by said coupling, a device for preventing operation otl said hammer When said actuator is being energized, means for releasing said device to enable said hammer to be operated, and means for restoring said actuator to idle position.

l5. In an adding machine, a type-carrier, a hammer for driving the type on said typecarrier to print, a normally denergized actuator therefor, acoupling movable to and from position to connect said actuator and hammer, a movable part, means controlled by said movable part ivhen in one position for supporting said coupling in position to connect said actuator and hammer, mechanism for retaining said movable part in the position mentioned,^and mechanism for energizing and operating said actuator and thereby said hammer.

46. In an adding machine, a type-carrier, i a hammer for driving the type on said type carrier to print, a normally denergized actuator therefor, adding mechanism movable to and, from operative position, a coupling for connecting and disconnecting said actuator ,and hammer, and mechanism controlled by said adding mechanism vvhen in operative position for supporting said coupling in position-to connect said actuator and hammer.

47. In an adding machine, adding mec-hanism, a type, a hammer for driving said type to print a character to indicate a clear condition of the adding mechanism, a normally denergized actuator for said hammer, means for preventing said actuator from being energized when said adding mechanism is out of operative position, mechanism for supporting said adding mechanism in operative position and for energizing said actuator, and a device controlling the operation of said hammer by said actuator.

48.-, In an adding machine, adding mechanism movable to and from operative tion to support said coupling as required to connect said actuator and haininer, and means for moving said coupling to position to disconnect said actuator and hammer when said adding mechanism is out of opei'- ative position.

i9. In an adding machine. adding mechanism movable to and from operative position. a device preventing displacement of said adding mechanism when out of operative position. a type. a hammer for driving said type to print. a noiinallv denergized actuator for said hammer, a coupling for connecting and disconnecting said actuator and hammer. mechanism controlled by said adding mechanism when in operative position for supporting said coupling in position to connect said actuator and hammer. a device for moving said coupling to position to disconnect said actuator and hammer when said adding mechanism is out of operative position. and mechanism for energizing and operating said actuator.

50. In an adding machine, adding mechanism movable to and from operative position, a device for preventing .displacenient of said adding mechanism when out of operative position, atevpe, a hammer for driving said t vpe to print. a noi-mall)v denergizedactuator for said liannner, a coupling controlled bv said adding mechanism for connecting said actuator` and hammer, means position.

said actuator is being energized, means for operating Said device to release said hammer, means for Operating said device toV restore said hammer to idle position. and a device tor restoring said actuator to idle 51. In an adding machine. type, a typedriving hammer for driving said tvpe to print. and a normally denergized actuator therefor. in combination ivith a coupling movable to and from position to connect said actuator and hammer. a spring for moving said coupling 'to disconnect said actuator and hammer. a lever for moving said coupling to position to connect' said actuator and hammer. adding mechanism. means for supporting said adding mechanism in diii'erent positions. means controlled b v said adding mechanism in one position thereof for holding said lever in position to cause said coupling to connect said actuator and hammer, and means for operating said actuator.

In Witness whereof. I have signed this specification in the presence otl tivo subscribing Witnesses.

HARRY LAXDSIEDEL.

Yit-nesses R. D. BAYARD, B. C. Haniiisox.

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