IMPROVE- MENTS IN THE CONSTRUCTION OF FRAMES FOR UMBRELLAS, PARASOLS, AND SUNSHADES
Year: 1873

page_text: LETTERS PATENT to Charles Harrison and William Pearson, both of
Old Change, in the City of London, for the Invention of "IMPROVE-
MENTS IN THE CONSTRUCTION OF FRAMES FOR UMBRELLAS, PARASOLS, AND
SUNSHADES."
:
Sealed the 2nd May 1873, and dated the 11th January 1873.
William Pearson at the Office of the Commissioners of Patents,
with their Petition and Declaration, on the 11th January 1873,
pursuant to the 9th Section of the Patent Law Amendment
Act, 1852.
✓
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, CHARLES
HARRISON and WILLIAM PEARSON, both of Old Change, in the City of
London, send greeting.

page_text: have petitioned Her Majesty to grant unto us, our executors, ad-
ministrators, and assigns, Her Royal Letters Patent for the same, and
have made solemn Declaration that we are the true and first Inventors
thereof.
NOW KNOW YE, that we, the said Charles Harrison and William
Pearson, do hereby declare that the following Complete Specification,
under our hands and seals, fully describes and ascertains the nature of
the said Invention and in what manner the same is to be performed, in
and by the following statement, reference being had to the Drawings
hereunto annexed, and to the figures and letters marked thereon, that is
to say :-
Our said Invention consists in the construction of a compound collar,
and in the attachment of the same to the cylindrical tube, technically
known as the "runner," and forming that part of the frame of an
umbrella, parasol, or sunshade to which the "stretchers." are attached
and which by the agency of springs (as ordinarily constructed) retains
the article in an open or closed state.
By the use of the before mentioned compound collar the necessity for
the use of springs is altogether avoided, whilst the ribs and stretchers of
the article can be firmly retained in any desired position.
The compound collar is formed of brass or other suitable metal, and
consists of two parts each of which has an aperture bored or formed
therein, such apertures being circular but placed eccentrically with
reference to the peripheries of the respective parts; one part of the
collar is fixed to the end of the runner opposite to that at which the
stretchers are attached, the external edge or periphery thereof being
furnished with a screw thread. The other part of the collar is in the
form of a cap, in the interior of which is a screw thread capable of
gearing into that formed on the exterior of the fixed portion of the
collar; by actuating the cap by means of the screw threads the circular
aperture therein can be brought to coincide with that in the fixed
portion of the collar attached to the runner, when the latter will be free
to move up or down the stick of the umbrella, parasol, or sunshade to
which it is applied, or the said aperture may be brought into an
eccentric position with regard to that in the fixed portion of the collar,
over a part of which the edge of the aperture in the cap will pass and

page_text: press against the stick of the article, thus holding the frame firmly in
position until released by turning the cap in the opposite direction.
The stick may have grooves formed or recessed therein for the
reception of the edge of the cap, or grooved or recessed metallic or other
plates may be inserted in the stick at any desired parts for that
purpose.
In order to prevent the cap from being rotated too far or accidentally
detached, a groove is formed in the face or in the periphery of the fixed
portion of the collar in which works a pin or set screw passed through
the cap, thus operating as a stop, or the same result may be attained
by any of the well known contrivances adapted for the purpose.
Although we prefer the compound collar to be constructed with screw
threads thereon, as herein-before described, such screw threads may be
dispensed with, and the several parts of the collar formed with smooth
surfaces provided with slots and stops, as will be well understood, the
principle and mode of action remaining substantially the same.
We will now proceed to refer to the annexed Drawings from which
the nature of our said Invention will be more clearly understood.
Figure 1 represents a portion of the stick of an umbrella, and shews
the runner at the bottom groove as when the umbrella is closed;
Figure 2 is a section through the line A, B, in Figure 1; in these
Figures the same letters indicate similar parts.
a is the stick; a¹ the upper plate thereon with a groove for the
reception of the edge of the moveable portion of the collar; 6 is the
fixed portion of the compound collar, and c the moveable portion or cap
thereof. Figure 3 is an end view of the fixed portion of the collar, and
Figure 4 is a view of the compound collar shewing the eccentric
movement before referred to. In these Figures the screw arrangement
herein-before described is shewn as being used, but the modifications
above referred to will be clearly understood by persons conversant with
mechanism and mechanical contrivances.
Having thus declared and ascertained the nature of our said Invention
and in what manner the same is to be performed, we would observe in
conclusion that what we consider novel and original, and therefore claim
as constituting our said Invention is, the construction and arrange-

page_text: ment of the said compound collar to be used in connection with the
frames of umbrellas, parasols, and sunshades, substantially as and for
the purposes herein-before described and set forth, or any mere
modifications thereof.
In witness whereof, we, the said Charles Harrison and William 5
Pearson, have hereunto set our hands and seals, this Eleventh
day of January, in the year of our Lord One thousand eight.
hundred and seventy-three.
Witness,
R. S. MORDAUNT VAUGHAN,
54, Chancery Lane.
CHARLES HARRISON. (L.S.)
Wч. PEARSON.
(L.S.)