US1349244A - Typewriting-machine - Google Patents

Description

w. L. wmna. TYPEWRITING MACHINE. APPLICATION flLED NOV-14,1913.

Patented Aug. 10, 1920.

3 SHEETS-SHEET 1.

W. L. WHITE.

TYPEWRITING MACHINE.

APPLICATIQN FILED NOV-14,1918.

1,349,244, Patented Aug. 10, 1920.

3 SHEETSSHEET 2- //7 venfar:

A/for y W. L. WHITE.

TYPEWRITING MACHINE.

APPLICATION FILED NOV. 14. 191B.

Patented Aug. 10, 1920.

3 SHEETS-SHEET 3.

A/fo ey UNITED STATES PATENT OFFICE.

WILLIAM L. WHITE, OF BIRMINGHAM, ALABAMA, ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYIPEWRI'IING-MAOHINE.

Application filed November 14, 1918.

To all whom it may concern:

Be it known that I, WILLIAM L. WHITE, a citizen of the United States residing in Birmin ham, in the county of .lefl'erson and State 0 Alabama, have invented certain new and useful Improvements in T'ypewriting- Machines, of which the following is a specification.

This invention relates to typewriting machines, and more especially to tabulating mechanism to enable the traveling carriages of such machines to be rapidly brought to an desired point in the travel thereof.

The invention is herein disclosed as applied to an Underwood typewriting mach ne, and, inthe form herein disclosed, comprises a member constantly geared to the typewriter carria e and comprisin pins or lugs which are a apted to be ma e eifective at any point at which ,it is desired to arrest the carriage. These pins or lugs are shown as arranged in rows, and there is shown a key-controlled arm for each row of pins, which is adapted to be projected into the path of any set pin to arrest the typewriter carriage thereby. The keys for controlling these arms may en age a universal bar, which is effective to re ease the carriage from the escapement mechanism, Said bar is adapted to cause said escapement mechanism to resume control of the carria e when the latter is arrested at the desire point and =the depressed key is released.

The pins are set preferably in concentric rows or circles upon a plate, which is secured upon the end of a shaft which is constantly geared to a rack upon the typewriter carriage. This enables the pins to be symmetrically and compactly located, so that they may be conveniently set, and also provides a convenient arrangement of the pins for coo eration with the key-controlled arms. y having the plate with the pins at the front of the machine, the pins are at a point convenient to the operative, and easily reached.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a' sectional side view, largely diagrammatic, of an Underwood typewriting machine, embodying the present inyention.

' Specification of Letters Patent.

Patented Aug. 10, 1920.

Serial No. 262,428.

Fig. 2 is a front view of the plate.

Fig. 3 is a diagrammatic plan view of the tabulating connections.

Fig. 4 is a fragmentary view, similar to Fig. 1, but showing a tabulating key depressed.

In the Underwood typewriting machine, character keys 1, when depressed, swing type-bars 2 upwardly and rearwardly against, a platen 3, which is revolubly mounted in a carriage 4, said carriage being under the con stant tension of a spring drum 5 tending to draw it to the left.

In order to control the travel of the typewriter carriage toward the left, there is provided a universal bar 6, which is adapted to be moved rearwardly by the t pe-bars 2 as they approach the platen, an in so being moved rocks a dog-rocker or carrier 7 so as to carry the loose dog 8 clear of the escapement wheel 9 by which it usually holds the carriage and brings a fixed dog 10 into engagement with said wheel, practically no motion of the carriage taking place at this time. On the release of a key 1, the rocker 7 swings forwardly, reengaging the loose dog 8 with the escapement wheel, and, since the loose dog has in the meantime been drawn one space to the left, the carriage feeds forwardly, carrying the loose dog with it until the loose dog is arrested by the usual stop 11. The escapement wheel 9 is connected to the usual pinion 12, which meshes with the usual rack-bar 13 pivoted on the carriage 4 at 14.

In order to move the carriage rapidly to the left, there is provided, according to the present disclosure, a plurality of tabulatin keys 15 near the front of the machine an mounted on the front ends of key-levers 16, pivoted at the rear of the machine on a transverse shaft 17 Whenever any one of the keys 15 is depressed, it releases the typewriter carriage because a universal bail or bar 18, underlying all the key-levers 16 draws down on a link 19 which is connected to the rear end of a lever 20 pivoted at 21, with the result that an idle roll 22 at the front end of the lever 20 lifts the rack-bar 13 clear of the pinion 12 and permits the spring drum 5 to draw the typewriter carria e along. In order to counter-balance t e weight of the link 19, the universal bar 18 is supported by a spring 23-, which is inter mediate the bar and the shaft 17 on which the bar is journaled through arms 24.

In order to be able to arrest the t pewritcr carriage at the desired point tiere are provided a plurality of settable pins 2.) in a plate 26, which is geared to the typewriter carriage, as will hereinafter appear. Whenen or any one of the pins 25 is depressed, it projects its rear end 27 rearwardly, so that it lies in the path of an arresting arm 25, which is moved fronr a normally ineffective position, shown in Fig. 1, to the effective position, shown in Fig. f, by the depression of its key-lever. To effect this moving of the arms 28 to effective posltion, each tabulating key-lever is connected to its arm by means of a transverse lever 22), which is journaled intermediate its ends on a fixed rod 30, so that the short opposite end of the lever 29 lifts a vertical link 31 to which it is pivoted, with the result that said link rocks an arresting arm 28 around its pivot 32. To effect this, each link 31 is pivoted to a rearward extension of the arm 28 which it operates. Each arm 28 is normally held above and clear of the row of pins 25, and is held in such position by means of a spring 34. which supports its key-lever near the fixed shaft 17.

To enable the typewriter carriage to be arrested at any letter-space in its travel, the plate 26 is provided with a separate pin for each of said letter-spaces, and these pins are arranged in concentric circles around the center of a shaft 35 to which the plate 26 is fast. In order to enable each pin to arrest the typewriter carriage one letter-space farther than the pin next nearer the center, the pins, as clearly appears in Fig. 2, are set on lines varying slightly from the radial lines extending from the plate 26,the amount of variation from the radial line, through the next pin, being sufiicient to make one letter-space difference between the points of arrest of the typewriter carriage.

The shaft 35 is journaled at its front end in a bracket 36, against the face of which lies the hub 37 of the plate 26 to which the shaft is held by a key 38. In addition to forming a journal for the shaft 35, the bracket 36 forms a support for the pivots 32 of the arresting arms 28. The shaft 35 at its rear end is journaled in a lug 39 of the typewriter frame through which it passes, and carries at its outer end a large beveled pinion 4O meshing with a small beveled pinion all, the latter fast on a nearly horizontal shaft 42. This shaft 42 is geared nearly level to the typewriter carriage. 4 by a beveled pinion 43 in mesh with another beveled pinion 44, which is fast on a shaft 45 having at its inner end a spur pinion 46 constantly in mesh with a rack-bar 47,

fast to the carriage. The shafts 42 and 45 may be prevented from sliding in the brackets 4-8, 49 and M), in which they are journaled, by the hubs 51 of the pinions which they carry, respectively. The relative amount of ,e earingdown between the typewriter carriage and the plate 26 will vary with the maximum of travel of the typewriter carriage.

In order to enable the key-levers 16 to clear the cross-levers 29, the key-levers to the left of the one marked 1, in Fig. 3, are provided with successively larger inverted Us 52 which clear the cross-levers 29 lying beneath the depressed key-lever. In order to give the arresting arms 28 the correct throw, the key-levers are guided in a comb 53, which has a solid bar 54 across its bottom against, which the key-levers 16 strike when fully depressed. Since the key- 35 levers 16 are different distances from the rod 30 on which the cross-levers 29 are mounted, the proper throw of the arresting arms 28 is obtained by offsetting the pivots (largely diagrammatically) shown in *1g.

In order to steady the arresting arms 28, when they arrest the typewriter carriage, they lie substantially flat against the face 55 of the bracket on which they are journaled and behind a face plate 56 screwed to the vertical face of the bracket and having an L-extension 57 extending across and screwed to the upper face of said bracket.

The pins 25, which are adapted to arrest the typewriter carriage at successive letterspaces, are set slightly off the same radial line, as pointed out above, and the successive pins are numbered as illustrated in part on Fig. 2 with the number of the letter-space at which they are intended to arrest the carrange. The pins 25 are herein shown as provided with returning springs 58 to enable them to be easily withdrawn from effective position. To retain them in effective position and to steady their outer ends, the outer ends are reduced, as shown at 59, and pass through a face plate 60. They may engage said face plate with sufficient frictioh to hold them set. The enlarged bodies 61 of the pins 25 slide in bores 62 in the plate 26, and shoulders 63 prevent them from being withdrawn from the plate 26 by the springs 58. The carriage is provided with a scale 64, and the pins 25 are numbered in conformity with this scale.

Variations may be resorted to Within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a traveling carriage, a revolving disk, and gearing for causing the disk to always revolve with the traveling carriage,

Y of stops settable on said disk in concentric circles, an escapement normally holding said carriage, an arresting arm for each circle of stops, and key-operated means for making any arresting arm effective to arrest the carriage by any set stop in the circle with which it cooperates.

2. In a typewriting machine, the combination with a traveling carriage, a revolving disk, and gearing for causing the disk to always revolve with the traveling carriage, of stops settable on said disk arranged in concentric circles at letter-space intervals, a separate arm for each circle of stops for arresting the disk, a key for each arm adapted to be depressed to move its arm to effective position, said arms being at one side of the machine, and cross-levers connecting said keys to said arms.

3. In a typewriting machine, the combination with a traveling carriage, a revolving disk, and gearing for causing the disk to always revolve with the traveling carriage, of stops settable on said disk arranged in concentric circles at letter-space intervals, an array of arresting arms standing adjacent said disk normally out of range of the set stops, pivots on which said arms are mounted, guides for said arms, there being one arm for each circle of stops, keys for operating said arms, links pivoted to said arms, and cross-levers extending across the machine and connecting said keys to said links.

4. In a typewriting machine, the combination with a traveling carriage, and a rack at the rear of the carriage, of a rotatable disk at the front of the machine, gearing between said rack and said disk so that the disk always rotates with the traveling carriage, stops adapted to be set on said disk at letter-space intervals in concentric circles, an arresting arm for each circle normally out of the path of any set stop, and key-operated means for shifting any arm into the path of a set stop in the circle on which it is adapted to be effective.

5. In a typewriting machine, the combina tion with a traveling carriage and a rack at the rear of the carriage, of a rotatable disk at the front of the machine, gearing between said rack and said disk so that the disk always rotates with the travelin carriage, stops adapted to be set on said disk at letter-space intervals in concentric circlcs, and means whereby the carriage may be arrested by a stop set in any circle independently of any stop set in any other circle.

6. In a typewriting machine, the combination with a traveling carriage, of a disk rotating with said carriage, stops carried in openings on said disk and normally in ineffective position, said openings being in concentric circles, a keyboard, tabulating keys adjacent said keyboard, and connections whereby said keys may be selectively effective on said circles of stops to arrest the carriage.

7. In a typewriting machine, the combination with a traveling carriage, of a disk rotatin with said carriage, a keyboard, tabulatmg keys adjacent said keyboard, connections whereby said keys may be effective on said disk to arrest the carriage, said disk set at one side of the machine, arresting arms selectively operated by said keys for arresting said disk, and cross-levers for operating said arresting arms.

8. In a typewriting machine, the combina tion with a traveling carriage, a revolving disk and gearing for causing the disk to always revolve with the traveling carriage, of stops in concentric rows on said disk and normally in ineffective position but selectively settablc to effective position, a keyboard for said typewriter, key-operated arresting devices selectively cooperating with said rows of stops, and keys for said keyoperated arresting devices at said keyboard.

9. In a typewriting machine, the combination with a traveling carriage, a revolving disk and gearing for causing the disk to always revolve with the traveling carriage, of stops settable on said disk, an array of arresting devices adapted to selectively cooperate with said stops, keys for operating said arresting devices, a lever for each of said keys, and a cross-lever for each key lever extending to the side of the machine to operate its selecting device, said keylevers comprising U-shaped sections to clear the cross-leversof the other key-levers.

10. In a typewriting machine, the combination with a traveling carriage, a revolving disk and gearing for causing the disk to always revolve with the traveling carriage, of stops settable on said disk in concentric circles, arresting devices normally clear of the path of any set stop, a bracket on which said arresting devices are pivoted to enable them to be swung into the path of any set stop, and a wall on said bracket adapted to support the arresting devices when in effective position against the impact of the stop.

11. In a typewriting machine having a space-scale, a column-selector, said selector being located on the front frame of said machine, means whereby the column-selector may be set, said means including a dial or plate having stops occupying openings arranged in concentric rows, means for shiftllfig the stops in the openings to and from e ective position, and figures on the stops conforming to the space-scale of said machine.

12. In a typewriting machine, a columnselector, said selector being located on the front frame of said machine, and means whereby the column-selector may be set, said means including a dial or plate having stops and figures thereon conforming to the figures on the space-scale of said machine, said stops being mounted on said dial or plate in circular form, each circle embracing an equal number of stops, a carriage for said typewriter for selecting the columns, gearing between said carriage and said plate including a rack on the carriage, a shaft for the plate, and pinions constantly in mesh to cause the shaft to turn with the traveling of the rack.

13. In a typewriting machine, a columnselector, said selector embracing a rotary dial, said dial having mounted thereon, in a series of concentric circles, stops or pins which may he set for any previously determined carriage stop or position, a fixed plate alined parallel to the rotary dial, said fixed plate having mounted thereon levers, keyhars for controlling said levers, CI'OSS-lGVGIS for connecting said key-bars to said levers, links between said levers and said crosslevers, and bent portions in said key-bars to clear any interfering cross-levers.

WILLIAM L. WHITE.

Witnesses AGNES TILLER FLORENCE M. known.

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