A NEW OR IMPROVED WINDING APPARATUS FOR RAISING AND LOWERING CANVAS ON EASELS
Year: 1862

page_text: LETTERS PATENT to Charles Joseph Keene, of 10, Shrewsbury Villás,
Bayswater, in the County of Middlesex, for the Invention of "A NEW
OR IMPROVED WINDING APPARATUS FOR RAISING AND LOWERING CANVAS ON
EASELS,"
Sealed the 11th November 1862, and dated the 23rd July 1862.
PROVISIONAL SPECIFICATION left by the said Charles Joseph Keene
at the Office of the Commissioners of Patents, with his Petition, on the.
23rd July 1862.
J, CHARLES JOSEPH KEENE, of 10, Shrewsbury Villas, Bayswater, in the-
County of Middlesex, do hereby declare the nature of the said Invention-for-
"A NEW OR IMPROVED WINDING APPARATUS FOR RAISING AND LOWERING CANVAS:
ON EASELS," to be as follows:-
My improved winding apparatus for raising and lowering canvas has for its-
object the adjusting, with greater facility than has hitherto been done, the:
postion of the frame or rest-board of easels on which the canvas is placed, and'
is constructed in the following manner :-To the back of the moveable frame
is attached the working apparatus, consisting of a crown wheel, through the
centre of which a key or handle is attached, and to which is geared a small
toothed wheel attached to a worm or screw which lies within the circumference
of the crown wheel, which screw or worm works on a rack screwed to a fixed

page_text: part of the frame, and extends the whole length of the easel. The turning of
the key or handle causes the crown wheel, by means of the small toothed wheel,
to work the worm or screw up and down the rack, and carries with it the
frame upon which the canvas is placed. These wheels may be partly cased,
leaving only the worm or screw exposed, to allow its working up and down
the rack. My Invention being the raising and lowering of the frame or rest-
boards of easels by means of a worm or screw working up and down a rack,
and worked by one, two, or more wheels, which may be either pinion, bevel,
mitre, crown, or cog wheels, and put in motion by means of a key or handle.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Joseph Keene in the Great Seal Patent Office on the
12th December 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
JOSEPH KEENE, of 10, Shrewsbury Villas, Bayswater, in the County of Mid-
dlesex, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of July, in the year of our Lord
Ono thousand eight hundred and sixty-two, in the twenty-fifth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Charles Joseph Keene, Her special licence, that I, the said Charles
Joseph Keene, my executors, administrators, and assigns, or such others
as I, the said Charles Joseph Keene, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time, and at
all times thereafter, during the term therein expressed, should and awfully
might make, usc, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "A NEW OR IMPROVED WINDING APPARATUS FOR RAISING AND LOWERING
CANVAS ON EASELS," upon the condition (amongst others) that I, the said
Charles Joseph Keene, my executors or administrators, by an instrument. in
writing under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that I, the said Charles Joseph Keene, do hereby
declare the nature of my said Invention, and in what manner the same.

page_text: is to be performed, to be particularly described and ascertained in and by'
the following statement thereof, reference being had to the Drawing hereunto
annexed, and to the letters and figures marked thereon, that is to say :-
My improved winding apparatus for raising and lowering canvas has for its
object the adjusting with greater facility than has hitherto been done the
position of the frame or rest-board of easels on which the canvas is placed,
and is constructed in the following manner-To the back of the moveable
frame is attached the working apparatus, consisting of a crown wheel, through
the centre of which a spindle is attached, worked by a key or handle, and to
which is geared a small toothed wheel attached to a worm or screw which lies
within the circumference of the crown wheel, which worm or screw works in a
rack screwed on the front of the central vertical piece. The turning of the
key or handle causes the crown wheel, by means of the small toothed wheel, to
work the worm or screw up and down the rack, and carries with it the frame'
or rest-board upon which the canvas is placed.
In place of the crown wheel and pinion above described, I use two bevil
wheels, as shewn in Figs. 4 and 5, and herein-after more fully described.
These wheels may be partly cased, leaving only the worm or screw exposed,
to allow its working up and down the rack.
Fig. 1 of the accompanying Drawings represent an easel constructed
according to my Invention, the outer framework "A" is composed of two
uprights, having transverse bars "a," "a," for keeping the uprights at a certain
distance apart. The uprights have pieces "b," b," fitted to their lower
ends, to which castors are secured to admit of the apparatus being moved from
place to place. In the centre of the apparatus a vertical bar is attached,
having a rack "c" fitted thereto, into which rack a worm wheel, hereafter
described, is caused to work. The inside of each upright is grooved to admit
of a slide "B" furnished with a tongue working therein. This slide "B"
carries the rest-board "C," on which the picture or other design is placed.
To the back of the rest-board "C" the raising apparatus is fitted, this is con-
posed of a crown wheel "D," shewn at Figures 2 and 3, being actuated by a
key or handle in the front of the rest-board by means of a spindle "d" passing
through the same. The crown wheel "D" is geared by a pinion "e" on a
worm "f" the teeth of which take into the rack "c" on the front of the
central vertical piece. By turning the key or handle one way or the other the
rest-board can be raised or lowered to suit the requirement of the artist. On
the rest-board a flap or frame "h" is hinged, against which the picture or
other design is held by means of a spring "i" fitted to a piece of metal "J,"
which is free to slide within a narrow frauie "k," which also slides up and
:

page_text: down in the hinged framo "h." By the use of the above-mentioned slides
"J" and "" and spring "i" I am enabled to accommodate pictures of any
size. The hinged frame "h" is furnished at top with one or more compass
joints or quadrants "," to enable the picture to be placed at any angle to suit
the taste of the artist.
Figs. 4 and 5 shew views of another means of raising and lowering the
rest-board of easels. In place of the crown wheel and pinion before described;
I make uso of two bevil wheels, one of which is secured to the worm, as
represented in the Drawing, the worm in this case being of larger dimensions
than the one shewn at Figs. 2 and 3.
Although I bave described and shewn two methods by which the rest-board
of easels can be raised and lowered, I do not confine myself thereto, as other
arrangements of apparatus may be employed without departing from the nature
of my Invention.
And having now described the nature of my said Invention, and the manner
in which the same may be performed, I declare that I claim the improved
means of raising and lowering the rest-board of easels on which the canvas is
placed, by, the means and in the manner described and illustrated in the
Drawings hereunto annexed.
In witness whereof, I, the said Charles Joseph Keene, have hereunto
set my hand and seal, this Eighth day of December, in the year of.
our Lord One thousand eight hundred and sixty-two.
Witness,
JOHN JOS. KEENE,
10, Shrewsbury Villas,
CHARLES JOSEPH KEENE. (L.S.)
Westbourne Park, W.