Screw-and-lever hoisting mechanism
A vertical screw hoist with a pivoted lever arm; adjacent text not transcribed
This leaf carries a mechanical study: a tall vertical screw or rod fitted with a pivot collar and a curved bracket that works a hinged lever over a base, forming a screw-driven hoisting or clamping device. Lines of mirror-script text accompany the drawing at the left but are not included in the transcription for this page.
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Vertical screw hoist with lever
A vertical threaded rod or screw carries a pivot collar midway and terminates over a horizontal base, where a curved bracket and a hinged lever transmit its motion. The arrangement reads as a screw-driven hoisting or clamping device. Further untranscribed writing is present beside the drawing.