US1761430A - Abbing attachment for typewriting machines - Google Patents

Description

June 3, 1930. s. of DEGENER .ADDING ATTACHMENT FOR TYPEWRITING MACHINES Original Fi led June 10. 1926 x 35 ing means.

Patented June 3, T930 7 NI ED; STATES,

* PATENT o FicE GUSTAVE o. DEGENER, or SAN FRANCISCO, cumo mm, assieivoa'ro ROYAL 'rvra- WBITERRCOM PANY, 1176., OF NEW YORK, N. Y., A CORPORATION NEW YORK Anmivehzfiracnmnnr r03 TYPEWRITING MACHINES Original application meazrune 10, 1926, Serial No.

' This ,application'is a division of my prior Patent 1,688,805, Oct. 23,1928.

The object of the invention herein disclosed is to provide a-means whereby all of the keys which operate the adding mechanism are locked unless the totalizer is in proper pos1- 'tion to receive the impulse from'the master wheel or other transmitting mechanism. The {construction shown also acts as a decimal l0 lock to prevent writing of numbers in the spaces usually employed for writing commas a and periods in a number.

The invent-ionis embodied in a machine of the same general character as that shown in '15 my prior Patent 1,633,242, June 21, 1927, and there-is illustrated herein only so. much of the mechanism as is necessary to show the con: struction .and operation of the present invention. 'In the drawings: 1 Figure 1 is awerticallongitudinal section through the attachment with parts in-elevation. Figure 2 is a fragmentary view showing part of the means for locking the keys unless the totalizer is correctly positioned.

Figure 3 is a perspective view of a portion of this means: i .Figure 4'is a side elevation of a rocklng frame forming a part of the locking means. Figure 5 is a front view of the frame shown in Figure J I Figure 6 is-a perspective view of another rocking frame forming a part;of the lock- The attachment comprises a frame having side members, one of which is indicatedat 2, and transverse connecting members 5 and 8 as well as transverse rods '10 and 11 upon 4 which travels the totalizer 12. The numeral key levers H of the typewriting machine are connected by links 15 through crank arms 14 114,950. Divided and this application filed Fay $5, 1

- 1927. Serial No. 194,132. I

with teeth 23 throughout a portion of its periphery with which mesh rack teeth 24 on the sliding member 17. It is obvious that ,a depression of any key lever will move rearwardly the corresponding'sliding bar 17 and operate the cam gear 21 which through mechj anism described in my prior application or through other equivalent devices will set up the proper number in the totalizer. The precise character of the connections is immapresent invention is con- 1'7 engage this universal frame 44 so t at it will be rocked each time a numeral key is depressed. A spring 48 is attached at one end to one of the arms and at the other end to a fixed portion of the frame 49 and tends tomturn the frame 44 to normal position and thereby return the a ctilated key lever to its normal position. i a I The universal frame 44 caries a, roller 50 which is positioned to engage the cam end 51 of a rocking member 52. wThis member has a broad bearing on a pivot shaft 53 and has an u per end 54 provided with an 'oifset .55.

' is offset 55 rests against the free end of a wire spring 56, the other end of which is .attachedby ascrew 57- to a secondrrocking frame particularly shown in Figure 6 which is mounted on the-same pivot shaftp53; This .frame 58 has two side members 59"and 60. The member 59 has an n wardly extending arm 61 with a rounded 'en which enga es between the two pdrtions of a stopmem er 62 in the form 0 an open ended loop to there- .by limit the movements of the frame 58 in either direction. 7

The side oithe frame 58 has an upwardwhich are carried by the ends 'of roek-shaf t- 1:? extending arm 63 which is connected by a 13. Anupwardly extending crank .arm 16 link 63' to a slide member 64 which is molfnt- 4 is attached to the other'end of each rock shaft ed 'to slide in groove's on a support 65 which and this crank arin is pivoted at its upper is carried by a bracket 66 depending from the end to a sliding bar 17,'the rear end of which supported and guided by-a member 18."

A plurality of cam gears 21 are supported held in central position .by two members 69,. upon a. shaft 22 and each gear is provided one of which is shown detached inFigure 3, we

.cross bar 5. A pawl '67 is pivotedon a short stud 68 carried by the slide 64 and is normally which members are pivoted on a common pivot 70 and normally drawn toward each other by a coil spring 71, the ends of which engagein notches 72 in the member 69. The

rounded ends of these members engage on opposite sides of the pawl 67 and normally 1 hold it in central position although allowing a period would naturally come in the writings of a number.

When a key is actuated the universal frame 44 is operated from the corresponding sliding bar 17 v and this results in rocking the frame 52 and through the spring 56 also rocks 'the frame 58. The rocking of the frame 58 through the arm 63 and link 63' movesthe slide 64 with the pawl 67 toward the rack bar 74 and the teeth 75 thereof. If the the setting up of the number corresponding totalizer carriage is in the proper position'for tinue to move and the spring 56 will be tensioned'during such movement. The number will therefore be printed and set up in the totalizer in the usual manner. However,

I if the pawl 67 passes into one of the spaces between the teeth 75, which means that the totalizer is not in proper positionor that it 'is in such position that a comma or period should be written, the movement of the frame 58 will not be stopped but will continue and this will swing the arm 76 downward into the path of the universal frame 44- and stop the movement thereof before the frame has I moved far enough to set upthe number in the totalizer or to print from the typewriter key.

It is sometimes desired to write in the computing zone without setting up numbers in the totalizer and there is accordingly provided a non-add key 77 which is pivoted at 78 and normally drawn in one direction by sprin 79. The rear end of this key is provided with an offset 80 extending to one side thereof. Whenever this key is depressed this offset is-movednp sufficiently to be in the path of an arm 81 carried by the rocking frame 58.

Therefore, operation of this rocking frame will be prevented by the engagement of the arm 81 "with the offset end 80 of the non-add lever, regardless of the relative position of the register.

As stated above, this invention may be employed with widely differing types of com ,puting devices and it is not essential that the same beassociated with a typewriting machine. Minor modifications in the precise form and construction can be made without departing from the spirit of the invention which is to be regarded as limited only by the scope of the appended claims.

' I claim as my invention:

1. A computing mechanisnr comprising a travelling totalizer, devices for entering numbers in said totalizer when it is in the computing zone, keys for actuating said devices upon full depression of any key, and means set by the keys for preventing the full depression of said keys' to enter a number when the totalizer is not correctly positioned.

2. A computing mechanism comprising a travelling totalizer, devices for entering numbers in said totalizer when it is in the computing zone, keys for actuating said devices, and means set'by the keys for preventing the full depression of said keys to enter a number when the totalizer is not correctly positioned, said means comprising a" universal frame operated by the depressionof any key and a stop movable into position to limit the operating movement of the frame and to thereby prevent full depression of the key.

3. A computing-mechanism comprising a travelling totalizer, devices for entering numbers in said totalizer when it is in the computing zone, keys foractuating said devices, and means for preventing the depression of said keys to enter a number unless the totalizer .is correctly positioned, said means comprising a rack movable with the totalizer and having a tooth for each position in which a digit should be written, a pawl cooperating with said teeth, and movable between the teeth of the rack upon depression of any key when the to'talizer is incorrectly positioned, and a stop movable by a key into a position to limit the effective depression of said key when the pawl is not in register with a tooth of the rack 4. 'A computing mechanism comprising a travelling totalizer, devices for entering numbers in said totalizer when it is in the computing zone, keys for actuating said devices, and means for preventing the depression of said keys to enter a number unless the totalizer is correctly positioned, said means comprising a universal frame operated by the depression of any key, a second frame yieldingly moved by the first frame and carrying a stop which is moved into position to stop the universal frame unless the totalizer is correctly positioned. 1'

5. A computing mechanism comprising a travelling totalizer, devices for entering numbers in said totalizer when it is in the computing zone, keys for actuating said devices and decimal lock mechanism for preventing the depression of said keys to enter a numtravelling totalizer, devices for entering.

numbers in said totalizer when it is in the computing zone, keys foractuatin'g said devices, *and decimal lock mechanism for preventingthe depression of said keys to enter a number unless the totalizer is correctly posit-ioned, said mechanism comprising a toothed member travelling withthe totalizer, a pawl moved to cooperate with the toothed member by the initial depression of.

said keys, a universal frameoperated by said keys, and means for stopping the movement of said frame unless the pawl engages one of. said teeth.

7. A computing mechanism comprising a travelling totalizer, devices forentering numbers in said IOtElllZQI' when 1t 15 1n the computing zone, keys for actuating'said devices, and decimal lock mechanism for preventing the depression of said keys to enter a number unless'the totahzer iscorrectly positioned, said mechamsm comprlsing a toothed travelling with the totalizer, a pawl moved to cooperate with the toothed memher by the initial depression of said keys, a universal frame operated by said keys, a second frame yieldingly moved by the first frame. and a stop carried by the second frame and moved into the path of theunibers in saidtotalizen when it is in the com-I ated by the initial depression of the keys, a

.versal frame unless the pawl said teeth.

8; A computing mechanism comprising a travelling totalizer, devices for entering numengages one of puting Zone, keys for actuating said device's, saicl totalizer being free tomove at all times when in the, computing "zone, means including a rocking frame which operates auto.- maticallyto prevent effective depression of said keys unless the totali zer is correctly positioned, and a separate key cooperating with the rocking frame for disabling the last men-' tioned means. 1

' 9. In decimal lock mechanism for computing mechanism having a travelling totalizer and key actuated devices for entering numbers therein, the combination. of a toothed device carried by the totalizer, a slide operpawl pivoted on said slide and moved toward said teeth, and means for preventing further depression of said keys unless the pawl ,engages a tooth.

10. In decimal lock mechanism for computingmechanism having a "travelling totalizer and key actuated devices for entering I of the preventing means.

numbers therein, the combination of a toothed device carried by the totalizer, a slide operated by the initial depression of the keys, a pawl pivoted on said slide and moved toward said teeth, resilient means for holding I said pawl normally in central position, and Q means-for preventing further depression of said. keys unless the pawl engages a" tooth.

11. In decimal lock mechanism for computing mechanism having a travelling to:

talizer and key actuated devices for entering numbers therein, the combination of a device carried by the totalizer and having a tooth for each position wherein a number should be entered,a pawl moved toward said teeth by the initial depression of any key,-, and

means for preventing further depression of said key to enter a number 1n the totahzer unless the pawl engages a tooth. 12. Acomputing mechanism comprising a travelling totalizer, devices for entering 11ambers in said totalizer when it is in the com puting zone, keys for actuating said devices and means operated by an initial depression of any key for preventing suflicient depression to enter a number in the totalizer unless I the totalizer is correctly positioned.

I 13. In a computing machine, the combination of a traveling totalizer, devices for entering numbers in the totalizer when the same is in the computing zone,'keys for actuating said devices upon full depression of any key, means set bysthe keys for preventing full depression thereof to enter a number when the totalizer is not in correct position, and means controlled by the totalizer for determining whether the preventing means shall I or shall not function. I

'14. In a computing machine the combination of a traveling totalizer, devices for entering numbers in thetotalizer when in, the

computing zone,keys for actuating said devices upon full depression of any/key, means setby. thekeys' for preventing full depre'ssion thereof to enter a number when tlietoried by the totalizer, and a pawl cooperating .110 talizer is not in correct pos tion, a rack car'- with the rack and controlling the operation 15. Ina computing machine the combinaing the entry of amounts therein upon full depression of any key, means for preventing r 1 tion of a traveling totalizer, keys foriefiiect- I the full depression. of the keys when the totalizer is not correctly positioned, a universal member adapted-to be operated by any of the keys, a stop adapted to be placed lnthe path of the universal member, and means controlled by the totalizer for moving the stop into the path of the member when the totalizer is not incorrect positionr g In testimony whereof, I have hereunto sub- 1 scribed "m name.

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