DE422443C - Device for moving the counter slide of calculating machines - Google Patents

Description

Device for moving the counter slide of calculating machines. The invention relates to a device for moving the counter slide of Calculating machines with one serving for both directions of movement in its longitudinal direction shift lever mounted on the counter slide.

According to the invention, there is only one for both directions of movement Shift lever provided around one of two pivot points depending on the shift direction is pivotable and the switching movements depending on the switching direction immediately transfers the carriage. By means of cams attached to the gear lever causes the counter slide to be unlocked and the switching movement to be limited. The new slide circuit has the advantage that all moving pawls are avoided because the cams are used to lock the slide and limit its movement are firmly attached to the shift lever.

Fig. I shows the main parts of the arrangement seen from above in the rest position.

Fig. Z is a section along I-I of Fig. I. With the base plate a Firmly connected to the calculating machine is a rail b, one edge c of which is wavy Teeth d is provided. The opposite edge has saw-shaped millings f, g, which are identical, but running in reverse and offset from one another from above and are incorporated into the rail b at the bottom. They don't reach the middle of the Rail thickness (Fig. 2).

On the lower plate h of the counter slide are two pins i, k which engage in two slots 1, m of the switching lever n, which are delimited in the shape of a circular arc on one flank. If necessary, the arrangement can also be reversed, so that then the pins, k sit on the lower side of the switch lever n, while the two circular arc-shaped slots 1, m are arranged in the plate h of the counter slide. Under a lateral pressure of the switching hand against the handle o of the switching lever n, the latter can rotate according to the length of these slots 1, m around one or the other pin i, k , depending on whether it is pressed from the right or from the left. The shift lever n carries a downwardly protruding pin p, which in the rest position is drawn into one of the wave-shaped recesses d of the base rail b by a spring q, one end of which is attached to the shift lever n and the other end to a fixed in the carriage frame Bolt that is attached to u. This keeps the slide in the rest position. When the switching lever n is pressed, for example to the right, it rotates around the pin k, with its pin p emerging from the wave-shaped recess dl. At the same time, the switching tooth r, which is also located on the lower surface of the switching lever n, is brought into a tooth gap in the upper saw-shaped toothing of the base rail b; The slide shift takes place in that the slide jumps as a result of the pressure exerted on the shift lever n until the shift tooth r, which has meanwhile entered its tooth gap deeper, finds a stop at the next tooth edge, whereby the slide is moved almost one point further to the right.

The travel of the movement by a full counter is given to the slide by the switching pin p, which is under the tension of the spring q and which enters the undulating recess d, which is adjacent to the recess d1.

When shifting to the left, the tooth s arrives in the same way for engaging a saw tooth g. The process is otherwise the same.

In order to enable a shift over several places, the two shift teeth r, s are in the rest position (Fig x) (can bring the switching pin p out of engagement without the switching prongs r, s collapsing. To enable this displacement, the outer edges of the slots 1 and nt are designed in a straight line which is mounted on bolt a on the carriage frame and is pressed down with its end v for the purpose of permanent displacement, whereby it moves the switching lever n in the chosen manner.

Claims (1)

PATENT LANGUAGE: i. Device for moving the counters of calculating machines with a cradle, which serves for both directions of movement and is mounted on the slide, characterized in that the crank is moved by one depending on the switching direction. can be pivoted from two pivot points (i, k) and, depending on the switching direction, transmits the switching movement directly to the slide, with cams (p, r, s) attached to the switching lever successively unlocking the counter slide and limiting the switching movement. z. Device according to claim i, characterized in that the switching lever: (n) can be pivoted about two bolts attached to the switching lever or to the counter slide, which in each case are concentric with the other bolt, according to the bolt arrangement in the switching lever (n) or in the plate (h ) of the counter slide arranged slots are guided, and a locking element (p) and one or two switching elements (r, s) are worked on the pivot lever, such that in the rest position the locking element (p) engages a toothing (d), the switching element or elements (r, s), however, are out of engagement with a toothing (f, g), while when the shift lever is pivoted, the locking element is disengaged and the switching element (r or s) comes into engagement with its toothing. 3. Apparatus according to claim i and characterized by a lever (v) pivoted in the slide in a vertical plane, the pivoting of which causes the shift lever (s) to be shifted perpendicularly to the Schüttenschaltrrichtung for the purpose of free-hand shifting of the metering slide by more than one digit . .1. Device according to Claims i to 3, characterized in that the lever (v) engages in a rear sight worked into the switch lever (n) in such a way that pivoting of the switch lever (n) is effectively avoided.