DE23046C - Innovations in the double angle lever scale protected by patent no. 8551 - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 42: Instruments.

Patented in the German Empire on May 23, 1882.

The scales described below are guided straight in six points and work with variable, direct weight loading. The innovations are mainly in this, that can even occur no differences in the weight loaded in only one shell, and further, that inaccuracies as they exist in the now usual spring balances) are not so easily possible. Finally is effected by the variable, direct weight load. that with the use of a double pointer one can use a larger division of the scale, which in particular greatly facilitates the reading off of slight differences in weight.

Such a balance is shown in the accompanying drawing. .

Fig. Ι shows a side view,

FIG. 2 shows the longitudinal section according to AB of FIG. 3,

3 is a top view with the cover removed,

Fig. 4 is a cross section according to C-D of

Figures 5, 6 and 7 are details of the variable direct weight.

In the box A "made of metal, the two axes of rotation bb ^{1 are} mounted in pans α α with center points or knife edges.

Each of these axes bb ¹ carries two angle levers ccc ¹ c ^l , which are attached to it.

The angle levers cc, as well as c'c ^x , ^{contain pans ddddd l} i / ¹ d ^x d ¹ at the end of each leg , in which there are also axes mm ^x (between the angle levers cc) and »z ² m ³ (between the angle levers <r ' c ^l ) turn loosely on knife edges or punch points, Fig. 2, 3 and 4.

The axes m ot ² are loosely encompassed by the forked crossbar η , and the latter serves to carry the shell B, while the axes Ot ¹ Ot ³ arranged at the bottom between the angle levers ccc ^l c ^x absorb the direct load.

A plate ο is namely mounted so that it can move easily on the axes m ^x m ^{3 mentioned} , Fig. 2, and at the same time forms the counterweight for light loading of the shell B.

For the determination of the weight of larger loads, a peculiarly constructed weight D, FIGS. 2 to 7, is arranged, which can be brought into connection with or removed from the mechanism of the balance by simply turning a small shaft p.

A handle or swivel q, which sits on the outside of the wall of the box A, is used to rotate the shaft p , FIGS. 3, 5 and 6; Furthermore, a wide hook r is attached to this shaft p , which hooks into a corresponding hook s of the weight D , so that it rises or falls when the shaft / is rotated.

In the lowest position of the weight D , the same rests freely on the plate 0 and is held against displacement by a pin t which engages in a matching recess in the plate ο , Fig. 2 and 5. If the shaft p is now rotated, grip the hooks r and ί into each other and the weight D reaches the position shown in Fig. 2 and 5, it rests only on the broad hook r and is not connected to any part of the weighing

mechanism in contact. So that the weight D described is secured against unintentional fluctuations in its highest position, a nose u is attached to the wall of the box A , which catches in a section of the weight, FIG. 5.

The transfer of the deflection of the angle levers ccc ¹ c ¹ to the pointer, which indicates the weights in kilograms and their subdivisions, takes place as follows:

On the short pointer shaft w sits the peculiar double pointer χ and a small drive or gear wheel y, in which a toothed rack ζ engages, which is rotatably attached to one angle lever c at a ¹ and the other end floats freely so that the same by its own Weight with the drive y remains in engagement.

When the angle lever c (i.e. the whole weighing mechanism) swings, this toothed rack ζ rotates the double pointer x in the manner described, which indicates the weight of the load on bowl B in kilograms on a disc with two partial circles.

When the weight D is in its highest position, i.e. is in no way connected with the mechanism of the balance, only the weight of the plate o acts, and the subdivisions of up to 1 kg can x ¹ of the pointer χ , whereby the division of the scale becomes sufficiently wide to be able to read off small differences in weight with certainty. If, on the other hand, the weight D is lowered and rests completely freely on the plate 0 , the leg x ² , Fig. I, moves into the zero position, because the distance between the tips of the pointer is proportional to the weight difference between the weight D and the plate 0 , and the leg λ: ^{2 of} the pointer χ shows on a second scale the weights from 1 to 20 kg along with their respectively. Subdivisions at a full turn.

To regulate the pointer χ to the zero position, the adjusting screw E, which is attached to the side of the box A , Fig. 1 to 3, is used, by means of which you can vary the horizontal position of the box.

So that the shell B does not fall down when the load is placed on one side, the shell support J, Fig. 1 and 2, consists of an upright pin attached to the forked crosspiece η , on which a number of curved, flat arms are located, which the Embrace the shell and prevent it from tipping.

The closure lid F of the box A has. in the middle an elongated opening, through which the vertical pin of the pan support J protrudes, and is provided with attachments or handles P, Figs. 1 and 2, so that the whole balance can be easily transported. To mark which of the two legs of the double pointer χ shows the weights in question, the pointer legs and scales that belong together can be colored as desired.

Finally, it is noted once more that the axes of rotation of the weighing mechanism described above are used can also be stored on knife edges instead of in center points.

Claims (3)

Patent-to sayings: 1. The use of a special weight D, which by means of a mechanism can be brought into connection with the levers of the balance or removed therefrom, and with the aid of a forked double pointer x, depending on the position of the free weight D, the relevant weights, e.g. B. up to 1 kg on the full circumference of the disc and also weights over 1 kg on a second scale, also at; can read the entire circumference of the disc. 2. The construction of the forked pointer * · whose legs x ¹ and x ^{2 are} so far apart that one of them always automatically positions itself on the zero point of its associated scale, with or without the use of the free and independent of the Lever mechanism of the scales arranged weight D is manipulated. 3. The device for lifting and lowering a free and independent weight D , which is illustrated by the drawing and description and is independent of the balance mechanism. For this purpose 2 sheets of drawings.