IMPROVEMENTS IN UMBRELLAS, PARASOLS AND SUNSHADES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Frederik Wolff at the Office of the
Commissioners of Patents on the 25th April 1882. A communication by
August Malmros of Helsingborg Sweden
FREDERIK WOLFF of the International Patent Office, Copenhagen Denmark
Patent Agent. “IMPROVEMENTS IN UMBRELLAS, PARASOLS AND SUNSHADES"
▲ communication by August Malmros of Helsingborg Sweden
These improved umbrella frames distinguish themselves by allowing of an
additional folding up of the umbrella, when it is not used or is shut up, as compared
with the present umbrellas so that the umbrella can be made to take up only half
as much room as bitherto. For this purpose the umbrella stick is made in several
pieces which can easily be separated and folded up again, or it may be provided
with telescopic parts whereby it can be shortened or lengthened according to
circumstances. The ribs upon which the covering is sewn are further made to
fold or "break off," so that one half of this cover part can be folded over the other
half when shut up.
Of the two parts of the rib the first named is jointed at one end in the usual
manner to the "notch" or notched ring which is fixed on the umbrella stick, while
the other part forms the opposite or tip end of the rib. The two parts are jointed
together by the hinge, the stretcher is jointed to the rib and holds it out from the
umbrella-stick, when the umbrella is opened. One end of the stretcher is as usual
fastened to the runner, which slides up and down the umbrella-stick. The other
end of the stretcher is fastened to a sliding sleeve which fits on the upper end of
the rib and slides up and down it. The sleeve is pushed in over the end of a
thinner rod projecting from the lower end of the rib, so that it grips tight on the
upper end of the rib and further holds the former as an extension of the latter.
When the umbrella is opened, the tension in the cover endeavours to press the
sleeve further along the rib and thereby cause it to grip yet tighter on it. As the
stretcher in opening the umbrella turns a little over the perpendicular on the rib.
When one wishes to fold the outside together, after the umbrella is shut up, the
leeve is pushed away from the end of the thin rod by means of the before
mentioned runners to which the stretchers are fastened till they strike against the
ooks which are formed at the ends of the metal wires which are jointed to the
nds of the rods and which have the place in the usual hollow on the inside of the

page_text: "
Paragon" ribs. Thereupon the lower or tip ends of the ribs are turned over and
with them the accompanying piece of covering, and down over the upper ends of
the ribs and the piece of cover belonging to them. The runner with the stretchers
is now drawn down until the sleeves have come to the place where the two parts
of the ribs are jointed.together and are from there pushed up towards the ring to
which the ribs are joined, after which the umbrella-stick can be folded up or
pushed together like a telescope. It follows that the "notch " must be so much
larger than the runner, that the latter as well as the stretchers can find room
between the upper end of the ribs. Vice versa, when the umbrella is to be opened,
the umbrella-stick is first stretched out or straightened, the runner slided down on
it to about the normal place for the umbrella when shut up but not folded together;
it is then pushed yet a little upwards until the sleeves have come against the hooks
on the ribs and in working against these have turned down the lower end of the
ribs in the prolongation of the upper ends of ribs. Lastly the runner is pulled
so far down that the sleeves grip fast to the end of the rods, after which the
umbrella can be opened just like an ordinary one.
It is to be remarked that this construction can be applied also in the same
manner to parasols and sunshades.