US1508160A - Tabulator for typewriters - Google Patents

Description

Se t, 9, 1924.

r 1,508,160 T. E. BUSCHMANN 'mauLA'roR FOR TYPEWRI'IERS Filed March 23. 1921 s Shah-Shut 1 IIZJJQZMOL Sept. 9 1924. 1,508,160

T. .E. BUSCHMANN TABULATOR FOR TYPEWRITERS Filed March 23 1921 3 Shuts-Shut 2 Sept. 9, 1924. 1,508,160

T. E. BUSCHMANN TABQLATOR FOR TYPEWRITERS Filed March 23 192) 3 Shank-Shoot 5 mun IHIIH IILZJQZZZZJOJQ.

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Talented Sept. 9, 1924.

UNHTE STATES arass s Ar mn'nonon EUGEN BUSGHMANN, or onnirnrrz-iterrnn, GERMANY, ASSIGNOR To WANDERER-WERKE VORM. wmxnnorna a aanmoxn nxrrnnonsnrnsonarr,

OF SCHONAU, CI-IEIVINITZ, GERMANY.

TABULATOR- FOR TYPEWRITERS.

Application filed March 23, 1921. SerialNo. 4'54,947.- I

(GRANTED UNDER. THE PROVISIONS-0F THE ACT OFMARGH 3, 1921,41 STAT. L, 1313.) l

T 0 all whom it may concern:

Be it known that I, Trrnonon EUGEN Boson- .MANN, a citizen of the Realm of Germany, and residing at'Haydnstrasse 9, Chemnitz- Kappel, Germany, have invented certain new and useful Improvements in Tabulators for Typewriters (for which Ilhave filed application in Germany July 15, 1915, Patent No. 291,446, dated Apr. 19, 1916), of which the following is a specification.

This invention consists in an improvement on the tabulating device for which a patent was applied for on March 23rd, 1921, Serial No. 454,946.

A constructural form of the improved tabulating device is illustrated by way of example in the accompanying drawings in which Figure 1 is a side elevation showing the denominational selecting mechanism and the section selecting mechanism in the inoperative position.

Figure 2 is a side elevation showing the denominational selecting mechanism and the section selecting mechanism in their de pressed positions.

Figure 3 is a plan of the section selecting mechanism.

The reference numerals for indicating the parts shown in the accompanying drawings, are the same as those employed to indicate the corresponding parts of the apparatus specified in my aforesaid earlier application.

The platen 2 is carried by the so-called paper carriage 3 which runs by means of wheels on the rail 4 that is fixed to the typewriter frame 1.

The denominational key levers 6 mounted on the axle 9 are provided withlever arms that extend rearwardly and terminate .in a bend 6. This bend serves first iforactuating the universal bar for releasing the feed mechanism, and second as a limiting stop for the lever arms 12 which are likewise mounted on the axle 9, and are connected by a spring 13 to the denominational key levers 6 Pins 14 provided-on the ends of the lever arms 12 engage in slots in the denominational stops .15 which are slidably guided in a casing '16. This casing is adapted to rock in the usual manner around the axle 17, and "is guided at the top by :a

plate which is not shown as it is a subsidiary feature. The rocking. motion of the casing 16 serves to allow the denominational stops 15 to co-operate with-various rows of column stops. The rocking mechanism is omitted in the drawings because the ;apparatus is intended to be used also in. cases where there is only one tabulator bar, and

consequently the denominational stop casing is fixed to the machine frame.

The denominational stops 15 are raised bythe denominational key levers 6*, spring 18 lever 12 and pin 14, so that they come Within range of the column stops or sliders 19 which can be inserted in slots 20 as required for the of the form. I On depressing a denominational key, the paper carriage is disconnected in the usual manner from the feed mechanism. The throwing out of gear of thefeed mechanism purpose of writing columns is efiected by the rod 60 which is jointed-'- by means of a pin 59 to a bar 57 fulcrumed at 56. The universal bar 58 extends over all the denominational keylevers 6 which are provided with the band 6 at the point of engagement. Springs 18 attached to the denominational stops 15, as also springs '10 mounted on the denominational key levers 6 .whichzare suspended from a hooked bar tional key must be struck each time until the desired column is reached.

According to my priorapplication'above referred to, the entire-travel oftheicarria-ge is subdivided into a number of-travel columns. A selecting apparatus determines the column which is to be traversed freely before the denominational stops can come into operation. A bar 21corresponding to V the column stop bars 20 serves to receive the sliders for the selection ofxtjhe travelncolumns, and in contradistinction to the arrangement shown in the specification of my earlier application above referred to, is situated in direct vicinity of the paper carriage. In the movements of the paper carriage, the sliders 22 carry along with them the teeth 23 of the selecting wheel 23. The

selecting wheel 23 is fixed on an axle 29 which is mounted in a bracket 1 on a part of the machine frame. On the aXle 29 there is situated a disc 25 with indentations (Figure 3) corresponding in number to the number of the teeth of the selecting wheel. A roller 26 (Figures 1 and 2) mounted on a lever assures the proper position of the selecting wheel 23. This mechanism is not shown more fully for the reason that it is known. The selecting wheel 23 rotates the toothed wheel 30 which is fixed on the axle 29 and which actuates the rack 31 that is formed with a step in the same manner as the one shown in the specification of my earlier application.

For selecting the column selecting keys are provided which are preferably arranged under the denominational keys, but might just as well be arranged laterally or at any other suitable location. The rear ends 7 of the column selecting key levers are connected by means of pins 52 to vertical rods 35. The vertical rods 35 are formed at their upper part with a step 35 and at the top with riveted guide pieces or bearing blocks 36 that serve for the mounting of locking bolts 37 formed with pointed ends. The blocks 36 are situated directly side by side; they therefore support one another and they are guided in common in a fork 38. On the axle 39 moiuited in the machine frame, there are provided bell crank levers 40 which bear with their lower horizontal arms upon the pins 15 provided on the denominational stops 15. Also a universal bar 41 is mounted rotatably on the axle 39 by means of two lever arms. Further, on the same axle there is provided a locking frame 42 that is pulled by a spring 43 against the stop 44.

The operation of the apparatus is as follows On depressing a column selecting key the rod 35 is raised, and the pointed end of the respective bolt 37 is thereby raised between the rack 31 and the universal bar 41 (Fig-- ure 2). The bridge bar 41 is forced by the bolt 37 to the left away from the rack 31 so as to bear against the upright arms of the bell crank levers 40 and cause the lower horizontal arms of the said levers to press downwardly upon the pins 15*, thereby preventmg any upward movement of the denominational stops 15. When the rod 35 is raised the step 35 comes into latching engagement with the locking frame 42 and the rod 35 is thereby prevented from returning to its lower posltion when the pressure on the column selecting key is removed. If a denominational key be now depressed, the respective denominational stop 15 cannot be raised so as to come within the range of the column stops or sliders 19, because its pin 15 is held down by the horizontal arm of the bell crank lever 40 which in turn is locked by the universal bar 41 and the bolt 37 This position is shown in Fig. 2. The spring 13 however, allows the denominational key to be depressed, the spring being tensioned because the lever 12 is unable to follow the movement of the denominational. key lever 6 Depression of the denominational key causes the bend 6 of the denominational key lever 6 to raise the universal bar 58 and release the paper carriage. As soon as the paper carriage has been released, the sliders 22 rotate the selecting wheel 23 thereby sliding the rack 31, each slider 22 in turn moving the rack 31 through a distance equal to the width of one of the blocks 36 which are riveted to the rods 35 and carry the locking bolts 37. When the step 31 of the rack 31 comes opposite to the raised looking bolt 37 it allows the locking bolt to move to the right. The spring 13 being in tension, it tends to rock the lever 12 in a clock wise direction about the pivot 9 so that when the locking bolt 37 is free to move to the right the denominational stop 15 will be raised and, through the intermediary of the pin 15 and bell crank lever 40, will move the universal bar 41 to the right. As will be seen from Figs. 1 and 2, only a very limited movement of the rod 35 about its pivot 52 will cause the step 35 to become disengaged from the frame 42. As soon as the step 35 moves out of engagement with the frame 42 the locking bolt 37 drops whereby the universal bar 41 will move back to the position shown in Fig. 1 and release the bell crank levers 40 so that the denominational stops 15 can now come within the range of the column stops 19. The denominational stop which has come into operative position will then arrest the next following column stop and consequently the paper carriage.

In the hereinbefore described arrange ment only such columns can be kept free which must still be traversed, because the selecting key operates only when the step of the rack has not yet been reached.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a typewriting machine, a carriage, denominational selecting mechanism including denominational stops, controlling means for preventing the denominational stops from coming into action whilst the carriage moves through a predetermined distance including members for latching the denomnational stops, column selecting means for setting the controlling means including a plurality of column selecting keys, a plurality of locking bolts actuable by the column selecting keys and operatively coacting with the latching members for holding the denominational stops against movement, re-.

siliently controlled means for automatically latching the said bolts upon the raising of one of the bolts, and means actuable byt-he carriage for effecting the release of the locking bolts and thereby the denominational stops at the moment When the carriage has reached the end of the said distance substantially as and for the purposes set forth.

2. In a typewriting machine, a carriage, denominational selecting mechanism including denominational stops, denominational keys for actuating said sto s, controlling means for preventing the enominational stops from coming into action Whilst the carriage moves through a predetermined distance including a pivotally mounted unistops against movement, retaining means ineluding a resiliently controlled and pivotally mounted latching frame for automati cally latching. the bolts upon the raising of one of the bolts and means for releasing the denominational stopsat the moment When the carriage has reached the end of the said distance comprising a stepped rack, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification. I THEODOR EUGEN BUSCHMANN.

Witnesses:

OSCAR KoLMANN, GE RG GABLER.

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