Hygrometer

Claim 1

IN A HUMIDITY INDICATOR, A HYDROSCOPIC ELEMENT CONSISTING OF TWO THIN, RECTILINEAR STRIPS ONE OF WHICH IS A THIN FLAT STRIP OF MOISTURE ABSORBENT MATERIAL AND THE OTHER A THIN FLAT COEXTENSIVE STRIP OF METAL ADHESIVELY UNITED INTO AN INTEGRAL UNIT DISPOSED IN A STRAIGHT LINE POSITION WHEN THE HUMIDITY IS NORMAL, A SCALE FOR DESIGNATING THE HUMIDITY IN THE SURROUNDING, ATMOSPHERE OF A ROOM OR OTHER ENCLOSURE, AN INDICATING POINT ASSOCIATED WITH THE SCALE FOR VISUALLY INDICATING ON THE SCALE THE HUMIDITY PRESENT, A LEVER ARM EXTENDING LONGITUDINALLY OF SAID ELEMENT AND PIVOTALLY MOUNTED FOR HORIZONTAL MOVEMENT AND PROVIDED ADJACENT ONE END WITH AN ELONGATED SLOT, A ROTATABLY MOUNTED SLOTTED POST ATTACHED TO THE INDICATING POINTER, ONE END OF SAID ELEMENT BEING SECURED TO THE SLOTTED POST AND INDICATING POINTER AND THE OTHER END HAVING A PROJECTING PART FREELY SUPPORTED AND LONGITUDINALLY MOVABLE IN THE ELONGATED SLOT WHEREBY SAID ELEMENT IS FREE TO CURVE CONVEXLY OR CONCAVELY FROM ITS NORMAL STRAIGHT LINE POSITION UPON THE ABSORPTION OF A GREATER OR LESSER QUANTITY OF MOISTURE THAN NORMAL, WITH SUCH CURVATURE BEING TRANSMITTED TO THE POST AND BY IT TO THE INDICATING POINTER, SAID ARM BEING ADJUSTED TO SET SAID ELEMENT TO A DESIRED INITIAL POSITION.