US931688A - Type-writing machine. - Google Patents

Description

J. 0. DUANE.

TYPE WRITING-MACHINE. APPLTOATION FILED APR. 16.19Q9

Patented Aug. 17, 1909.

W/T/vESsEs [NVENTORI A T rap/v5 J. G. DUANE.

' TYPE WRITING MACHINE. I APPLICATION FILED APR.16.1909.

' 2 SHEETS-SHEET 2 WITNESSES UNITED STATES PATENT OFFICE.

JOHN C. DOANE, OF HARTFORD, CONNECTICUT, ASSTGNOR TO UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.-

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Aug. 17, 1909.

Application filed. April 16, 1909. Serial No. 490,386.

To all whom it may concern:

Be it known that I, JOHN C. DOANE, a citizen of the United States, residing in Hartford, in the county of Hartford and Stateof Connecticut, have invented certain new and useful Improvements in Type- Writing Machines, of which the following is a specification.

This invention relates generally to tabulating mechanism for typewriting and other machines, and particularly to means for enabling the carriage to jump to any selected column or field, such devices known in the art as column skippers.

The principal object of the invention is to produce a simple and inexpensive mechanism readily applicable to typewriting machines for effecting such jumping of the carriage.

According to the present invention, a pinion is mounted in proximity to the usual column stop rack on the carriage, to be engaged successively by the column stops as the carriage travels, and thereby caused to rotate. Upon the pinion shaft is a'succession of stops to revolve with the pinion, these stops preferably having a helical arrangement Below the helical series ofstops is disposed a series of thrust rods, and these'areo'per cited by keys, whereby any thrust rod may be thrown mto the path of its associated revolving stop, thereby arresting the carriage at the desired column.

In the accompanying drawings, Figure 1 is a rear perspective view pf my improvements applied to an Underwood front strike 'writing machine; the parts shown in normal positions, and certain features being omitted for the sake of clearness. Fig. 2 is a sectional side elevation of the parts seen at Fig. 1. Fig. 3 is a rear elevation illustrating the normal positionsof the parts, and also showing how each column stop releases the pinion for rotation. Fig. 4 is a View similar to Fig. 3, but showing the stop and hence the carriage arrested by the tabulating mechanism.

'ihe platen l is mounted upon a carriage 2, which travels upon tracks 3, and is propelled by a spring barrel 4, the latter connected to the carriage by a strap 5. Upon the carriage is a rack 6 in which are placed column stops 7, which may be say five-in number, each adjustable along the rack independently of the others, and all held in place by a keeper 8, as usual. Each column stop projects bclow the rack in position to engage the teeth of a pinion 9, which is fixed upon the forward end of a horizontal shaft 10 usually supported in fixed bearings 11 and extending forwardly or rearwardly, or at right angles to the rack.

Upon the pinion shaft 10 are stops 12, 13, 14, 15 and 16, five in all, one for each of the teeth of the pinion 9; the series of stops being fixed to the shaft 10, and preferably extending in the form of a helix around the same. Standing vertically under the helical stops are thrust rods 17, 18, 19, 20 and 21, occupying positions directly below the respective stops 11 to 16, and suitably mounted in fixed guides 22, 23, and held down out of the paths of said stops by springs 24, Fig. 1. Any thrust rod may be moved up into the path of its associated revolving stop for a1- resting the same and thereby stopping the carriage. Said thrust rods are connected by levers 25 to depressible keys 26 arranged at the front of the machine. The thrust rods are arranged one behind another, and, for convenience are connected by nested elbows 27 to short vertical bars 28 placed side'by side across the machine, and at their lower ends resting upon the rear ends of the key levers 25.

- From the foregoing, it will be understood that when any key is depressed, as for instance key 1, its associated lever 25 is turned, and the bar 28 is lifted, and the rod 17 thrust up, so that its stop moves into the 'path of. the associated revolving stop 12, as at Figs. 2 and 3, for the purpose of arresting the carriage. The carriage is simulta-' neously released through the following connections: A universal bar 29 is engaged by a jog 30 on the upright bar 28, and turns a rock shaft 31, upon which is provided an arm 32, connected by a link'33 to a carriagereleasing lever 34, which has aroll 35 to lift the carriage-feeding rack 36 from the usual escapement pinion 37. The carriage being thus released, the first stop 7 engages the pinion 9, and turns the latter until the rcvolving stop 12jstrikes the upper end pf the thrust rod or stop 17, Fig. 4, thereby arresting the carriage." It will be observed that a brake barrel 38 is provided upon the rock shaft 31, so that its pinion 39 may be turned into mesh with a gear .40 provided upon the carriage-driving spring-barrel 4, to check arrested, as at Fig. 4.

the speed of the released carriage. Upon reassociated revolvmg stop 'Wlll engage the elevated thrust rod, and the carriage will be It will be understood that during the return movement of the carria e, the pinion and its stops are revolved idlyy the column stops, and further that the pinion is revolved idly in both directions, by the column stops during the ordinary typewriting operationsof the carriage, when ordinary matter is being written withouttabulating. gThe normal position of the pinion is indicated at Fig. 3, ;from which will beseen that one I of the teeth of the pinion'stands about vertically above the shaft 10, and in position to be engaged on either edge b the traveling column stops 7. In order to old the pinion normally in the F g. 3 position, there are provided opposite pawls- 41, 42 pivoted at.

43, 44 on the framework and operated by any suitable springs 45. The ,pawl 44 1s shown in normal position to prevent the pinion from turning to the left, as at Fig. 3. Thteupawl 41, however, which is shown in dot lines as normally reventing rotation of the pinion to the rig t, is shown in full lines released to permit such rotation underthe driving power of the column stop a 7. This release 1s effected by a cam arm, 46

in.the path of the column stop 7 tobe de ressed thereb from the dotted i 1111 line posit1on. The other pawl is' rovided with a similar cam arm 47, whic is rocked down out of the path .of the advancing stop 7 by theen'gagement of the advancin tooth of the pinion with the pawl 42, bot 42 and 47 rocking down aboutthe pivot 44 to a osition corresponding to the full line position of 41 and 46. Upon the succeeding movement of-the stop 7. to the left at Fig. 3, said stops engage the cam arm 47 in succession to release the pawl 42 to permit the pinion to be revolved to the left by said sto '7, and the teeth of the wheel itself depress t e pawl 41 and its arm 46, as will be understood by reference to Fig. 4.

Hence the carriage may be at any time run freely in either direction, and the pinion withvits s op will freely revolve; while at any time any of the keys 26 may be de-.

pressed tow-ease the carriage and cause it I positely disposed spring pawls normally preventing rotation of the pinion and each hav- -nation with a carnage rack, of a series of .column stops thereon, a revolving shaft ine to the" to be arrested by the corresponding column,

stop.

Having thus described my invention, I claim:

1. In a tabulating mechanislm'the combination with a series ofcolumn stops, of a pinion rotatable by the column stops, a helical rotary series of stops connected to the pinion, and a set of key-operated stops movable into the path of the rotary stops, one key-operated stop for. each of the rotary stops. 1

2. In a tabulating mechanism, the combination with a series of column stops, of a pinion rotatable by the columnstops, p'awls normally preventing rotation of the plnion, means to enable the column stops to release the pawls, a helical series of sto s connected to the pinion, arid ke -operate stops lmovable into the paths 0 the helical stops.

3. In a tabulating mechanism, the combination with a series of column stops, of a I pinion'engageable by the column stops, op-

ing a cam to be engaged by the column stops in succession to enable them to release the pinion for rotation, a helical series of stops connected to the" inion to rotate therewith,

and key-o erated stops movable into the paths oft e helical stops for arresting the carriage. 4 v

4. In a tabulatingmechanism, the combimounted transversely to the rack, a pinion on said shaft to be revolved by the column stops, stops on said shaft, stops mounted upon the framework, and keys movable independently of one another and connected to the last-mentioned stops toproject any selected stop into the path of the corresponding revolvin stop. 5. In a ta ulatlng mechanism, the-comb1- nation with a carriage rack, ofa series of column stops thereon, a horizontal revolv ing shaft extending transversely to the rack, a inion on said shaft to'berevolved by the co umn eggs, a. helical series of sto s on :JoHN o. DUANE. Witnesses:

- W. M. BYORKMAN,

.LYMAN D. Bnonon'ron.

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