DE1379C - Addir machine - Google Patents

Description

Patent claims: The construction of the machine in general, in detail:

1. the lever mechanism,

2. the slide with

a) Slopes, by virtue of which it is unequal in size when the key is pressed with the same depth Makes movements,

b) with fixed locks that allow a further movement than the intended movement Prevent safety.

Freedom of choice is reserved in the application of the measurements and the material.

For this purpose I sheet drawings.

Claims (1)

1877. Class 42. OTTO PÜTTER and BENNO SCHMITZ in SOLINGEN. Addir machine. Patented in the German Empire on December 1st, 1877. The exterior of the Addir machine is a sheet steel box of 167 mm length, 55 mm wide and 26 mm high. On their front side, the 17 mm long heads of nine lever buttons, each 18 mm from the center to middle, forward. To use the machine, these keys are provided with numbers from 1 to 9 from left to right depressed and is to prevent the machine from tipping over, the floor panel made wider by the length of the key tops. In the cover plate are in a line and at the same distance from each other three peepholes, below which the result of the addition appears. The machine enables numbers of the same order to be added according to the usual method, up to a result of 999. The internal arrangement is as follows:
The axis α lies horizontally along the rear wall. This is where the keys have their pivot point and are pressed firmly against the cover plate by the springs b riveted to the floor. The buttons on the axis are separated by means of attached sleeves. They are guided on the axis from these and in front in matching slots in the longitudinal wall. With its flat side leaning against the inner side of this longitudinal wall, there is the slide c, which is guided above and below. A spring d tries to always press it against the left head wall of the box. The keys slide, when they are pressed down, over the same high, inclined surfaces of this slide, the bevels of which under the respectively. Keys are in the same proportion as the number of keys to each other, so that the slide experiences a movement to the right in the same proportion (according to the drawing from ½ mm or up to [9 times 1%] 13 ¹ ^ mm.) -angebrachte slide rack conveys the rotation of the fixed standing on the vertical axis e toothed wheel. Also at the top of this axis, the arm / with a spring engages in a number ring, which rests loosely on the axis with the number disc connected to it. The rotation of the lower wheel thus produces an equally large movement of the unit number disc. The part circular periphery of this fixed on Ax e wheel is (20 x 1 '/ ₂ mm) 30 mm and below the indicator foramen moving speed circle of the one disc has twenty divisions in which 2 times the number of ο - are 9, so that every time a key is pressed, as many divisions pass the peephole as the relevant key indicates. When the depressed key, released, jumps up again, the slide and thus the axis C with its wheel returns to its original position, but the return of the number disc is prevented by a locking spring g. The transfer to the tens and from this to the hundreds disk happens after every half revolution of the first respectively. of the second disc with the aid of two riveted secondary teeth in the manner of ordinary counters. The reset to ο takes place at the hubs of the number discs protruding above the cover plate. As a special advantage of the construction we assert that the quality of the slide when the keys are fully depressed enables the intended Rotation of the number disc must take place with absolute certainty, unhindered greater or lesser force with which the pressure is exerted on the keys, there hold the slide in the deflection on both sides.