IMPROVEMENTS IN CASES OR BOXES TO BE MADE OF METAL, WOOD, OR ANY SUITABLE PLASTIC MATERIAL, TO SERVE THE PURPOSE OF A COVERING FOR HAND SEWING MACHINE AND OTHER SMALL OBJECTS LIABLE TO BE INJURED BY EXPOSURE TO DUST
Year: 1876

page_text: PROVISIONAL SPECIFICATION left by Philip Syng Justice at the Office of
the Commissioners of Patents on the 11th March 1876.
PHILIP SYNG JUSTICE, of 27, Southampton Buildings, Chancery Lane, in the
County of Middlesex. "IMPROVEMENTS IN CASES OR BOXES TO BE MADE OF METAL,
WOOD, OR ANY SUITABLE PLASTIC MATERIAL, TO SERVE THE PURPOSE OF A
COVERING FOR HAND SEWING MACHINE AND OTHER SMALL OBJECTS LIABLE TO BE
INJURED BY EXPOSURE TO DUST."
This Invention consists in forming a sphero-cylindrical case or box either of wood
or metal or other substances from two half sections, or a little more than two half
sections of hollow cylinders taken in the line of their axis and of similar form, one
being slightly smaller than the other so as snugly to sheath inside of the larger one.
These portions of cylinders may be of any required diameter and length. The
upper end of cach is capped by a flat or a spherical plate of the same diameter and
section as the semi-cylinder itself. The larger one is secured in an upright position
at its lower edge to a circular base plate on which it stands. Rotating in the centre
of its cap is a short spindle secured to a knob on its upper end. To the lower end
of this spindle the smaller semi-cylinder is firmly attached and suspended, so that
when the knob is rotated in one direction the small semi-cylinder is snugly sheathed
within the larger, and when the motion is reversed the smaller semi-cylinder is
projected outwards and forms in combination with the larger one a compact case
resembling a short cylinder capped with a flat or dome shaped covering, according
to its construction. Small stops or ledges on the inside of the case and near the
wall of the larger cylinder secures the uniform motion of the smaller or rotating
section. By increasing the length of the cylindrical portion of this case any
required height may be obtained without necessarily increasing its diameter.
Another plan for constructing my sphero-cylindrical cases is to form two portions
of hollow cylinders with both ends closed, either by flat or spherically shaped caps
each portion being a half or somewhat over a half of a cylinder, and one being
somewhat smaller in all its dimensions than the other. These being pivoted at their
true centres by a short loose axle or rivet, the lesser cylinder will snugly sheath
itself inside the greater one when partially rotated. The larger cylinder has its lower
edge secured to a base plate on the line of but considerably below its axis, and as
the caps or end plates of this portion have an area of considerably over a half of

page_text: a circle of the diameter of the cylinder itself, a much greater height for the case can
be thus obtained without increasing the diameter of the cylinder than by any other
means, and the base of the case can thus be kept within a very narrow limit when
required. When the smaller half of the cylinder is pulled down on the base plate
the case presents the appearance of truncated column resting horizontally on a base
plate.
Either of the above designs may be made partly in moulds of any suitablo plastic
material as well as in wood or metals.