Instructions for the government of the Artist in the Clock for the University of Virginia.
The bell is to weigh 400.℔, which it is supposed will ensure it’s being heard 1½ mile under any circumstance
The distance of the hollow cylinder in which the weights are to descend, and it’s oblique direction from the dial plate has rendered necessary an outline of the ground plate and elevation of the parts. of the building where it will be placed; this is drawn on paper, in which every line counts a foot, and every 10th line is more strongly drawn to facilitate counting the measures, scale & compass.
The cylindrical space in which the weights descend is of 5. feet diam. and 48.f. depth, that is to say from the level of the dial plate to the ground.
The tympanum of the Pediment, in the center of which the dialplate is to be placed, is 42. feet in the span, and 9 f–4 I in it’s perpendicular , that is to say the naked of the tympanum within it’s cornice. such a triangle admits a circle of 52.I. radius to be inscribed within it. so that describing in it’s center the dial plate of 30.I. radius, & around that the architrave 10.I. wide there will a clear space between cornice of the pediment of 12I. in the but the dial plate must be as much wider than the 5.f. which it shews as to fill a rabbet of ½I. at least in the face of the architrave in which it may be firmly imbedded.
The face of the tympanum will be exactly over the line ab. and c. isthe center of the cylinder of discent for the weights. the direction of the cord it is supposed may be from d. to e. where an aperture in the wall may pass it on to the pully or point of suspension. thus requiring but a single change of direction. this however is for the consideration of the artist.
The bell is to be suspended on an iron gallows, sufficiently strong, mount’d on the ridge pole of the pediment, perpendicularly over the clock works,
|[GRAPHIC IN MANUSCRIPT]||it must be free to be rung independently of the clock.|
the weights of the striking as well as the going parts descend in the same linder, but the ringing rope go down the opposite cylinder at f. which is occupied by winding stairs. the winding up must be on the back side of the works within the hollow of the roof.
and there also means must be furnished of setting the hands.
|Monto June 4. 26|