DE127278C

DE127278C -

Info

Publication number: DE127278C
Application number: DENDAT127278D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die in dem Patent 125881 beschriebenen Federwerke können dadurch vereinfacht werden, dafs man als Mittelstellung des belasteten Hebels eine solche wählt, in welcher der eine Hebelarm senkrecht zu der Richtung steht, in welcher die constante Kraft wirkt.Those described in patent 125881 Spring mechanisms can be simplified by using the middle position of the loaded Lever selects one in which the one lever arm is perpendicular to the direction in which the constant force acts.

Wählt man nach Fig. 1 der beiliegenden Zeichnung als Mittelstellung des Hebels ACBD diejenige Stellung A D₀, in welcher der Arm A D senkrecht zu A O steht und demgemäfs der Arm A C in die Richtung von A O fällt, und macht man AC = AO, so sind bei kleinen Ausschlägen aus dieser Mittelstellung heraus die Spannungen der in C angreifenden Feder annähernd proportional den Bogenstrecken O C, und die Wirkung einer O mit C verbindenden Feder kann ersetzt werden durch eine im Drehzapfen bei A angebrachte gerade Drehfeder, welche durch die Drehung des Hebels ACBD gespannt wird, jedoch im spannungslosen Zustand sich befindet, wenn der Hebelarm A C in die Richtung O A fällt. Es kann dann der Hebelarm A C in Wegfall kommen, so dafs das Federwerk besteht:If, according to Fig. 1 of the accompanying drawing, the middle position of the lever ACBD is selected to be the position AD ₀ in which the arm AD is perpendicular to AO and accordingly the arm AC falls in the direction of AO , and if AC = AO, then at small deflections from this central position, the tensions of the spring acting in C are approximately proportional to the arc lengths OC, and the effect of a spring connecting O with C can be replaced by a straight torsion spring attached to the pivot at A , which is tensioned by turning the lever ACBD , but is in the de-energized state when the lever arm AC falls in the direction OA. The lever arm AC can then be omitted, so that the spring mechanism exists:

1) aus dem zweiarmigen rechtwinkligen Hebel ABD, bei welchem die Verlängerung von BD durch O hindurchgeht, wenn AD in seiner Mittellage, d. h. senkrecht zu A O steht, und bei welchem der Endpunkt D belastet ist durch eine um O drehbare Feder, deren Spännungen proportional O D sind.1) from the two-armed right-angled lever ABD, in which the extension of BD passes through O when AD is in its central position, i.e. perpendicular to AO , and in which the end point D is loaded by a spring rotatable about O , the tension of which is proportional to OD are.

2) aus der in der Richtung der Drehachse A angebrachten geraden Drehfeder, welche in den spannungslosen Zustand kommt, wenn A D senkrecht zu A O steht, und deren Drehmoment gleich Κ· Ο C-AC ist, wenn die Spannung der in D angreifenden Feder gleich kS.OD ist.2) from the straight torsion spring attached in the direction of the axis of rotation A , which is de-energized when AD is perpendicular to AO , and whose torque is equal to Κ · Ο C-AC when the tension of the spring acting in D is equal to kS .OD is.

Fig. 2 und 3 stellen die constructive Ausführung des Federwerkes dar. g ist das die Punkte A und O tragende Gestell, h der zweiarmige Hebel. An der Achse in A ist mit einem Ende eine stabförmige Feder f befestigt (Fig. 3), deren anderes Ende in einer Büchse b festgelagert ist, so dafs diese Feder gespannt wird, wenn die Achse in A durch den Ausschlag des Hebels ABD aus der Mittellage nach der einen oder anderen Richtung gedreht wird.2 and 3 show the constructive design of the spring mechanism. G is the frame supporting points A and O , h is the two-armed lever. A rod-shaped spring f is attached at one end to the axis in A (Fig. 3), the other end of which is fixed in a bushing b , so that this spring is tensioned when the axis in A is moved out of the position by the deflection of the lever ABD Center position is rotated in one direction or the other.

Wählt man als Mittelstellung des mit parallelen Federn belasteten Hebels ACBD (Fig. 4) eine solche, dafs AD senkrecht zur Federrichtung steht, so steht A C parallel zu dieser Richtung, und wählt man die Senkrechte auf A O, in welcher die Endpunkte der ungespannten Federn liegen, in O so, dafs sie durch den Endpunkt C₀ des in der Mittellage A₀B₀C₀ D₀ stehenden Hebels ACBD hindurchgeht, so sind die in C angreifenden Federspannungen S₁ bei kleinen Ausschlagen des Hebels ACBD aus der Mittellage her-If the middle position of the lever ACBD loaded with parallel springs (Fig. 4) is chosen such that AD is perpendicular to the direction of the spring, AC is parallel to this direction, and the perpendicular to AO is chosen, in which the end points of the unstressed springs lie , in O in such a way that it passes through the end point C ₀ of the lever ACBD in the middle position A ₀ B ₀ C ₀ D ₀ , then the spring tensions S ₁ acting in C are due to small deflections of the lever ACBD from the middle position.

Claims

so small that they can be neglected.

Both the spring in C and the lever arm AC can then be omitted without a remarkable change occurring in the constant force in B , so that the spring mechanism according to FIG. 5 consists of a two-armed right-angled lever ABD , the end point D of which is A spring is loaded, the stresses of which are proportional to the distances of the lever end point D from the line at the intersection point O of the parallels to the spring direction going through A with the extended line connecting points B ₀ and D ₀ of the lever ABD in its central position perpendicular to the spring direction is erected.

Godfather τ-An Proverbs:

i. Another embodiment of the spring mechanism protected by patent 125881, characterized by a two-armed lever ABD rotatable about a fixed point A , at one end point D of which a spring rotates about a fixed point O engages, which is installed so that its tensions are straight Are in relation to the distance OD , and to whose axis going through A a rod-shaped torsion spring is connected, which is fixedly mounted outside the lever ABD , the tensions of the two springs being chosen so that in every position of the deflecting lever the state of equilibrium is achieved by a The force acting parallel to the direction AO and acting on the end points of the second lever arm B is brought about, which changes its magnitude only insignificantly when the lever arm AD moves out of the position perpendicular to AO.
Embodiment of the spring mechanism according to claim i, characterized in that a parallel shifting spring engages at one end point D , the stresses of which act like the distances of point D from a line perpendicular to the spring direction, so that the equilibrium state in every position of the deflecting lever is brought about by a force acting on the other end point B and parallel to the spring direction, which changes its magnitude only insignificantly when the lever arm AD moves out of the position perpendicular to the spring direction.

1 sheet of drawings.