. Scientific American Volume 91 Number 16 (October 1904). ADJUSTABLE CAN-OPENEE. the center to serve as a pivot or fulcrum on which toturn the can-opener. The cutter comprises a carrieralso formed of heavy wire and a projecting prongwith sharpened edge and point which constitutes thecutter proper. The carrier is mounted on the handlein such manner that it may be moved to any desiredposition thereon. The can-opener is thus made ad-justable to any size of can. The method of using thedevice is clearly shown in the illustration. Wrench.—The wrench shown herewith is adapted tobe instantly adjusted
. Scientific American Volume 91 Number 16 (October 1904). ADJUSTABLE CAN-OPENEE. the center to serve as a pivot or fulcrum on which toturn the can-opener. The cutter comprises a carrieralso formed of heavy wire and a projecting prongwith sharpened edge and point which constitutes thecutter proper. The carrier is mounted on the handlein such manner that it may be moved to any desiredposition thereon. The can-opener is thus made ad-justable to any size of can. The method of using thedevice is clearly shown in the illustration. Wrench.—The wrench shown herewith is adapted tobe instantly adjusted to tit any nut merely by thepressure of the hand, in which adjustment it automat-ically becomes rigidly locked when pressure is appliedbetween the jaws. Instead of the usual rack and wormfeed for the movable jaw, the latter is moved by handto the desired position, and is there held by a steelball which is carried in a suitable hottsing in the mov-able jaw. This ball is pressed by a coil spring between. WEENCH. the shank of the wrench and the inclined wall of thehousing. It will be evident, if pressure be applied tomove the jaws apart, the movement will tend .to movethe ball into the narrower end of the housing, andfirmly wedge it between the inclined wall and theshank of the wrench. Thus the greater the pressure be-tween the jaws, the more securely will the movablejaw be locked. When it is desired to move the jawsapart, this can readily be done hy seizing the ball be-tween the fingers and drawing it had;, when the mov-able jaw will be unlocked, and can be moved to anydesired position. F ikk-Escmm:.—The fire-escape shown in the accom-panying illustration, is made up of a series of inter-meshing links, which are individually hooked intoeyes set into the side of the building. The advantageof this construction lies in its cheapness and simplic-ity, and the readiness with which the links may be ap-plied or removed. The links are formed of metal rodsbent to a U-shape, or similar
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectdevice, bookyear1904
