US1883979A - Automatic carriage returning means - Google Patents

Description

Oct. 25, 1932, w. w. LANDslEDEL AUTOMATIC CARRIAGE RETURNING IEANS Filedsept. 19 1927 Patented Oa. 25, i932 UNITE-D STATES ,PATENT OFFICE WALTER W. LANDSIEDEI., OF CINCINNATI, OHIO, AssIGNOE To REMINGTON RAND INC.,

` OF TONAWANIIA, NEW Yom:`

' AUTOMATIC CARRIAGE EETUENING MEANS Application filed lSeptember 19, 1927. Serial N o. 220,389.

the depression of the return key, the carriage willl be returned drive. p

The main object of this invention is to proby'the action of the motor l vide an automatic throw for the return key` mechanism of Dalton machines when the carriage reaches its limits of travel, thus eliminating the manual operation of depressthe return key.

in Fig. 1 is a right side view of a machine of the type mentioned, with a part of the side plate broken away.

Fig. 2 is a partial section on the line 2-2 of Figure'l.

Fig. 3 is a partial vsection on the line 3 3 of Figure 1. l l

Fig. 4 is a partial front view of the right hand portion of the machine.

The machine on which this invention is Y shown is a well known Dalton adding maing' a pinion 18 in meshi with a rack 19 on the carriage 13. The said clutch 15 is conn trolled by a Clutch lever (Figs. 1 .and 2),

which is mounted on the case of the clutch and when moved into the dot and dash position in Figure 2 will cause the motor to operate the shaft 17. The arrangement of gears is such that the shaft' 17 will be rotated clockwise thus moving the carriage 13 to the right to the desired position where another mechanism, not shown herein, throws out the clutch by turning the said clutch lever back to the position shown in full lines in Figure 2. The clutch lever 2() is thrown clockwise by a throw level 21, pivoted at 22 and rocked clockwise by depression of the usual return. key 23, (Fig. 1), the said return key lifting a link 24, (Figs. 1 and 2)",

connected to the left hand end of the throw lever and thereby lowering the right hand end, which acting upon a stud 25 in the clutch lever 2O imparts a clockwise throw to this lever. The adding machine stands on. and is removable fromthe frame in which the motor is mounted, the adding machine being `one unit and the mot-or lwith its shpporting frame and the clutch-case and gearing being another unit, as explained in Letters Patent No. 1,209,858, and No. 1,270,845, and'exemf pliied by Dalton machines long in public use.l The adding machine can belifted bodily oif of the motor frame. The hub 22a into which the pivot pin 22 of lever 21 extends and by which that lever is supported is fast at its front end on thel frame of the adding machine.

Means is provided for operating the throw lever automatically as the carriage reaches its farthest-forward or left hand position. This means comprises a cam lever 27 (Figs. 1 and 3), pivoted on the machine frame 11 and urged clockwise by a spring 28 fastened to the lever and the machine frame; A cam roll 29 is rotatably mounted upon a bent lip on the end of the upper arm of the lever, the said arm and lip protruding thru the machine frame. f-

A' throw cam 30 is secured to the under side of theg'uide comb 31 near the right handend of the same, the said guide comb being rigid with the carriage 13. The cam is preferably located to move into cooperative relation with the cam roll when the carriage 13 reaches its extreme left'position, thereby throwing the cam lever 27 counter-clockwise. slide link 32, (Figs. 1 and 2), pivoted to the end e of the lower arm ofthe lever 27,'is slidably Y36, which cooperates with a pin 39 in the throw lever 2l by means of which the down- Ward action ofthe slide link, received from the lever'27, is transferred to the lever 21 which isthrown in a clockwise direction cansing the functioning of the return mechanism as heretofore described.

The return of the carriage releases the lever 27, which under the tension/of the spring 28 returns to itshome position as shown in Fig ure l. The slide link 32 is carried with it, of course. The return action of this lever system is limited by the extremity of the slot 35 striking the stud 34.

While the invention has been shown inzone form of embodiment and as .applied to a particular type of machine, it is to be understood that `it may take other forms and'be applied to other types of machinesall falling Within the scope: of the claims.

' lVhen the adding machine is lifted from or j set on .the motor-supporting frame, of course the lever 2l is removed from or placed in lts Y proper position with relation to the clutch lever by this mere act without requiring any special skill or care on the partk of the user of the machine.

lVhat isclaimed is l. yIn a machine of the class described, the combination with a laterallyshiftable carriage, m'otor driven means forreturning it to its home position, a carriage return key and a. device operated by said key for closing al clutch to cause the motor to return the car'- riage, of a camfplate 30 mounted on said carriage, .a lever 27 in the nature of a follower operated by said cam at agiven point in the carriage traveland a link 32 operated vby said lever and acting directly on said key operated device to close the clutch.

2. In a machine of the class describe`d,'the\ comb'nation of an angularly'movable clutch- .closing device having a horizontal pivotal axis, a-pivoted lever at\one side of said device the pivotal axis of this lever being horizontal, and a downwardly movable carriage-actuated slide, sai-d device having onit a lateral projection, said lever also having a lateral projection and extending over and normally .making contact with the lateral projection of said device, and said slide extending over and normally resting on the lateral Aprojection of said lever. l

A3. In a machine of the class described, the combination of an angularly movable clutchclosing device having a horizontal pivotal a axis, a pivoted. lever at onev side of said device the pivotal axis of this lever beinghorizontal,

and a key-actuated pull-link connected to said lever, said device having on it a lateral projection, and said lever extending over and normally making contact with said projection, and the pivot of said lever being'between theconnection with the pull-link and they contactwith the projection.

4. In a machine of the class described,

which machine comprises an adding machine and power-actuated operating means forming distinct and separable units, the combination of a clutch-closing device mounted on the frame of the operating means, a lever mounted on the frame of the adding machine, and lever-actuating means embodied in the adding machine.

WALTER WM. LANSIEDEL.

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