IMPROVEMENT ON DRAWING BOARDS
Year: 1885

page_text: I, FREDERICK WEBER of N° 1125 Chestnut Street of the City of Philadelphia,
State of Pennsylvania, United States of North America do hereby declare the
nature of my invention for. AN IMPROVEMENT ON DRAWING BOARDS to be as
follows, see Drawings attached :—
Figure 1 represents. a face view of a drawing-board embodying my invention.
Figure 2 represents a rear view thereof. Figures 3 and 4 represent a section of a
portion thereof enlarged, in line x x, Fig. 1, the side or top bar of the board being
shown open in Figure 4.
Similar letters of reference indicate corresponding parts in the several figures.
My invention consists of a Drawing Board having bars hinged to the sides
thereof, the contiguous faces of the board and bars being provided with means for
tightening and firmly holding the paper on the board.
It further consists of the construction of the hinges which connect the side bars
with the board, whereby, should the board contract or shrink, the butts of the
hinges are permitted to move, thus preventing warping of the adjacent parts or
loosening of the hinges.
Referring to the drawings, A represents a drawing board, formed of suitable wood
and having on the back the battens or braces B, for strengthening purposes, which,
however, form no part of the present invention.
C. C. C. C. represent bars, which are hinged to the sides of the board A, and
adapted to move rearward thereof, it being noticed, that the bars of opposite sides
are of equal lengths, so that the bars shown on the right and left sides, may turn
backward or rearward between those of the top and bottom; but the arrangement
may be reversed-that is to say, the top and bottom bars may be made shorter and
the right and left side bars longer, so that the former may turn or fold backward
within the latter. In the side edges of the board are grooves D, and on the inner
edges of the bars are tongues E, which are so located, that when the bars are closed
they enter said grooves, said tongues and grooves being V-shaped or pointed, for
purposes to be hereinafter explained. To the back of the board are privoted the
fastening buttons or fingers F, for holding the bars C immovable.
When it is required to fit the drawing-paper or other material to the board, the
buttons are turned so as to release the bars C, and the latter are then turned

page_text: back. The paper is then placed on the board and its ends or sides bent over the
edges of the board, thus covering the grooves D. The bars are now restored to
their normal position, whereby the tongues E bear against the portion of the paper
over the grooves and press the same into said grooves, thus gradually and casily
drawing up the paper and causing it to be stretched taut and uniform on the board,
it being noticed that the V-shape of tongues and grooves causes the paper to be
tightened by a wedging action without liability to be cut or torn by the tongues.
The bars are firmly retained in their closed positions by the buttons F, and thus
the security of the paper on the board is assured. When the paper is to be
removed, the buttons are properly turned and the bars are then swung rearward,
thus relieving the paper of the holding action of the bars and permitting the entire
withdrawal of the same from the board. It is evident, that the tongues E may be
formed on the sides of the board and the grooves D in the bars without affecting
the nature of the case. The hinges G, which connect the top and bottom bars with
the board, have the knuckles of the butts a, which are screwed to the board, cut
away, as at b, so that spaces exist between said knuckles and the knuckles of the
other butts, a¹, which latter are screwed to said top and bottom bars.
Referring to Fig. 2, it will be seen, that, should the board shrink, the butts a are
drawn by the wood laterally toward the centre of the board, this being permitted
by the spaces b, and thus the hinges do not resist the shrinking of the board, so
that warping of the latter, especially at their edges and tearing out of the screws
of the hinges are prevented. The tongues and grooves E D may be rounded or
right angular, instead of the pointed form shown, and the tongues may be made of
strips inserted in the board or bars, or be integral with the board or bars, in either
case acting as stiffeners, which increase the strength of the board or bars. An
artist's frame may be employed in lieu of the board A for stretching and holding
canvas, a picture, &c, the frame having bars hinged thereto, and the bars and frame
being tongued and grooved, the operation being similar to that when the board A
is employed.
Having thus described my invention, what I claim as new, and desire to secure
by Letters Patent is―
1. A drawing-board having bars hinged to the sides thereof, so as to fold to the
rearward, and of such length that when raised they form a continuation of each
other and coincide with the several sides of the board, substantially as and for the
purpose set forth.
2. A drawing-board having bars hinged to the sides and forming an extension
thereof, the contiguous parts of the board and bars having tongues and grooves,
whereby, when the paper is fitted to the board, the portion of the same over the
sides thereof is forced by the tongues into the grooves, and the paper is thereby
stretched, substantially as and for the purpose set forth.
3. A drawing-board having bars connected with the sides thereof by means of
hinges, the butts whereof having their knuckles cut away, as stated, so as to
permit the board to shrink without being resisted by the hinges, substantially as
set forth.
4. The board A, having grooves D and privoted buttons F, in combination with
side bars, G, connected to said board by hinges and forming an extension thereof,
the said hinges having the knuckles of one of the butts cut away, substantially as
and for the purpose set forth.

page_text: improvощених 11 Drawing Doarus.
"
I FREDERICK WEBER of N° 1,125 Chestnut Street in the city of Philadelphia
State of Pennsylvania, United States, of North America, do hereby declare the
nature of my said invention for "IMPROVEMENTS IN DRAWING BOARDS and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
My invention consists of a drawing board having bars binged to the sides
thereof, the contiguous laces of the board and bars being provided with means for
tightening and firmly holding the paper on the board.
It further consists of the construction of the hinges, which connect the side bars
with the board, whereby should the board contract or shrink, the butts of the
hinges are permitted to move, thus preventing warping of the adjacent parts or
loosening of the hinges.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing in which figure 1 represents a
face view of a drawing board embodying my invention,--figure 2 represents a rear
view thereof; figures 3 and 4 represent a section of a portion thereof enlarged in
line x, x, figure 1, the side or top bar of the board being shown open in figure 4.
Similar letters of reference indicate corresponding parts in the several figures.
A represents a drawing board formed of suitable wood and having on the back
the battens or braces B for strengthening purposes which however form no part of
the present invention.
C, C, C, C, represent bars, which are hinged to the sides of the board A and
adapted to move rearward thereof, it being noticed, that the bars of opposite sides
are of equal lengths, so that the bars shown on. the right and left sides may turn
backward or rearward between those of the top and bottom, but the arrangement
may be reversed, that is to say, the top and bottom bars may be made shorter and
the right and left side bars longer, so that the former may turn or fold backward
within the latter..
In the side edges of the board are grooves D and on the inner edges of the bars
are tongues E, which are so located, that when the bars are closed they enter said
grooves; said tongues and grooves being V-shaped or pointed for purposes to be
hereinafter explained.
To the back of the board are pivotted the fastening buttons or fingers F for
holding the bars C immovable.
When it is required to fit the drawing paper or other material to the board, the
buttons F are turned so as to release the bars C and the latter are then turned
back. The paper is then placed on the board and its ends or sides bent over the
edges of the board, thus covering the grooves D. The bars are now restored to
their normal position whereby the tongues E bear against the portion of the paper
over the grooves and press the same into the said grooves, thus gradually and
easily drawing up the paper and causing it to be stretched taut and uniform on the
board it being noticed that the V-shape of the tongues and grooves causes the
paper to be tightened by a wedging action without liability to be cut or torn by
the tongues.

page_text: The bars are firmly retained in their closed positions by the buttons F and thus
the security of the paper on the board is assured.
When the paper is to be removed the buttons are properly turned and the bars
are then swung rearward, thus relieving the paper of the holding action of the
bars and permitting the entire withdrawal of the same from the board.
It is evident that the tongues E may be formed on the sides of the board and
the grooves D in the bars without affecting the nature of the case.
The hinges G which connect the top and bottom bars with the board have the
knuckles of the butts a which are screwed to the board, cut away as at b, so that
spaces exist between said knuckles and the knuckles of the other butts a¹ which
latter are screwed to the said top and bottom bars.
Referring to figure 2, it will be seen that should the board shrink the butts a,
are drawn by the wood laterally towards the centre of the board this being
permitted by the spaces b, and thus the hinges do not resist the shrinking of the
board, so that warping of the latter especially at their edges and tearing out of the
screws of the hinges are prevented.
The tongues and grooves E, D may be rounded or right angular instead of the
pointed form shewn and the tongues may be made of strips inserted in the board
or bars or be integral with the board in either case acting as stiffeners which
increase the strength of the board or bars.
An Artist's frame may be employed in lieu of the board A for stretching and
holding canvas a picture & the frame having bars hinged thereto and the bars and
frame being tongued and grooved the operation being similar to that when the
board A is employed..
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A drawing board having bars hinged to the sides thereof so as to fold to the
rearward and of such length that when raised they form a continuation of each
other and coincide with the several sides of the board substantially as and for the
purpose set forth.
2. A drawing board having bars hinged to the sides and forming an extension
thereof, the contiguous parts of the board and bars having tongues and grooves
whereby when the paper is fitted to the board, the portion of the same over the
sides thereof is forced by the tongues into the grooves and the paper is thereby
stretched substantially as described.
3. A drawing board having bars connected with the sides thereof by means of
hinges the butts thereof having their knuckles cut away as stated so as to permit
the board .to shrink without being resisted by the hinges substantially as set
forth.
°
4. The board A having grooves D and pivotted buttons F in combination with
side bars G connected to the said board by hinges and forming an extension thereof
the said hinges having the knuckles of one of the butts cut away substantially as
and for the purpose set forth.