Year: 1885

page_text: ages. When the desk is intended to be used in offices it. is provided with an
independant seat of peculiar construction.
:
DESCRIPTION OF THE DRAWING.
In the accompanying drawings figure 1 shows the adjustable desk with school
bench arranged as a drawing table. Figure 2 shows the arrangement of said desk
with horizontal table and seat turned back to work standing. Figure 3 shows the
arrangement of the back of the seat so as to permit of regulating the depth of the
seat according to the size of the scholar.
Figure 4 represents the screw-stool which replaces the movable seat when the
desk is intended for office use.
. Figures 5 and 6 shew two different arrangements of. the console which serves to
adjust the table at the desired inclination. In all the figures the same letters refer
to the same parts.
The posts A A of the desk are combined with an inclined plank B serving as a
foot bench and are so formed on their inside that the uprights C C may slide
therein such uprights supporting the box D of the desk.
The uprights CC are provided with a slit e through which passes a bolt & fixed
in the posts A with the help of those bolts by which the uprights C C may be fixed
at any desired height in the slide of A.
The box D is closed. on all sides excepting the front when the top
of the desk
is in a horizontal position but it is entirely closed when the top Y is fully inclined
(see figure 5).
The top Y of the desk which may be employed as a drawing board is.connected
to the box D by means of a console E and a bearing F of wood or metal.
The console E and the bearing F oscillate around the bolts e and f fixed in the
side of D.
•
The position of those bolts is such as to compel the top of the table to fall down
in the inclined position shown in figures 1, 5 and 6 after having been raised for the
purpose of taking something out of the box.

page_text: In order to fix the top of the desk either in the horizontal position represented
in figure 2 or in a position less inclined than that shewn by figure 1 the console E
is provided with a prolongation E¹ formed like steps (figure 5) which lean against
the pin a fixed in one of the holes provided for that purpose in the side of
desk D.
According to the position of the hole in which the said pin is fixed the top of
the desk will assume a more or less inclined position. It will always be possible
to raise it to the horizontal position to take something out of the box without
displacing the pin a.
The arrangement of the console E already described may at will be replaced by 1
that represented in figure 6.
The projection E¹ of the console E is provided with a concavity g resting against
a sliding bolt h fixed on the side of D. The same may be placed in different
positions by displacing its pin i in the notches with which it is provided.
To facilitate the raising and lowering of the desk the same is provided with a
screw H which supports the box D and provided with a female-screw I resting on
a hollow post J fixed upon the foot bench B.
In turning the female-screw I after having unscrewed the bolts d d the desk is
raised to the desired height where it may then be fastened by the said bolts d d.
The screw H with female screw I and hollow post J may be fixed to the desk
or movable. In the last case the same screw may be used for several desks.
All the parts of the described desk may be executed in wood or in metal and
formed may or less elegantly.
The screw H may also be replaced by two iron screws or by two racks fixed
on the bearings of the desk and acted upon by an axis bearing two wheels engaging
with the same.
The movable seat is composed of two bearings K connected together by a cross
bar N and by a board L in which are arranged two sets of holes in which are
engaged the bolts m of the seat M. The back O may be fixed at any height by the
screws o. which engage into the slits R of the bearings K.
The seat M is formed of two parts the one of which M¹ may be raised as shown
in figure 3 the latter shows that by a good choice of the angle x the depth of the
seat is always proportional to its height. When the seat and the back are both in
the highest position the depth of the seat is x and when the seat and back are both
fixed in the lowest position the deptli of the seat is only Y.
In cases in which the hereinafter described manner of fixing the feet of the seat
at a variable distance to those of the desk is found too expensive the angle Y₁ inay
be taken in such a manner as to cause the seat to approach to the desk when the
same is fixed lower as shown by dotted lines in figure 3.
.:
The supports of the seat are connected to those of the desk by means of the
slide Q. With the aid of the bolts q their respective position may be determined
at will.
LL
The screw seat represented in figure 4 and intended to replace the aforesaid
bench when the desk in intended to be employed in an office is arranged so as to
be raised or lowered by the help of a screw by without turning the seat itself.
The seat R (figure 4) is fixed upon a screw T traversing a female screw U
turning freely upon a platform V supported by the feet W. The female-screw U
is maintained upon the platform V by the aid of the clutches v.
The lower part of the screw T is square or hexagonal and traverses a second
platform X in which it slides up and down without turning. By turning th
female-screw U the seat is raised or lowered without turning.
5

page_text: An Improved Adjustable Desk and Seat Applicable for Schools,
Offices, and other Places.
I ARMAND MANCHAIN of Geneva Switzerland Manufacturer do hereby declare
my said invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
My adjustable desk is intended to be used in schools or in offices. When
intended to be used in schools it is provided with a seat suitable for children of all
ages. When the desk is intended to be used in offices it is provided with an
independent seat of peculiar construction.
And in order to explain this invention fully I will now describe the same with
reference to the accompanying drawing in which figure 1 shows the adjustable
desk and seat lifted so as to be used by an adult.. Figuro 2 shows the same desk
and seat lowered so as to be used by a child.
In both figures the same letters refer to the same parts.
The posts A A of the desk are united by a plank B serving as a foot bench these
parts are formed on their inside so that the pieces CC may slide therein and the
under part of desk D is fitted on the sliding pieces C C.
The supports Care provided with a vertical slot c, two screwpins d are fixed in
the posts A and take in the slot c.
The box of desk D) has a cover or flap Y. The box of desk D is closed entirely
when the flap Y is in its lowest position.
The desk top or flap Y which may be employed as a drawing board is connected
to the box D by two bracket pieces E and F oscillating on the pins e aud ƒ fixed
on the sides of the desk D.
The bracket pieces E and F are fixed to the flap Y so as to allow the latter to
fall down in an inclined position by its own weight. In order to fix the flap Y to
the desk either in the horizontal position represented in fig. 2 or in an inclined
position as shewn in fig. 1 the bracket E is provided with a eccentric prolongation E¹
having a concavity q resting against a sliding bolt h fixed on the side of D. Said
bolt may be placed in different positions by displacing its pin i in the notches with
which it is provided.
To facilitate the raising and lowering of the desk the same is provided with a
screw H carrying the desk D and provided with a female-screwed nut I resting on
a hollow post J connected to the footbench B.
By turning the nut I after having unscrewed the pins d d the desk may be
raised to the desired heighth in which it is then fastened by means of the said
screw pins d d.
The screw H with nut I and hollow post J may be.fixed to the desk or not. In
the latter case the same screw may be used for several desks.
The desk may be
provided or not with a bookstand P and an inkstand G. The different parts of the
improved desk may be executed in wood or metal and formed more or less elegantly.
The movable seat is composed of two standards K connected together by means of
a cross-bar N and by a board L in which are two sets of holes intended to receive
the bolts m¹ of the seat M.

page_text: The back O may be fixed at any desired height by means of hooks taking into
one or other of the openings % of the standard K.
The seat M is formed of two parts the one of which M¹ may be turned back
when it is desired to work standing.
The standards of the seat are connected to those of the desk by means of the
sliding pieces Q fixed to the first ones and sliding in the latter.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed I declare that what
I claim is
1st In combination with a tipping desk top Y, slotted standard C, standard A,
bolts and plank or rest B the screw H¹, nut I and post J beneath the desk for
raising or lowering the same and firmly, supporting such desk in addition to the
support from the standard substantially as set forth.
2nd The combination with the hinged seat M¹ the standard K and cross board L
having vertical rows of holes in the same and the attaching bolts m¹ for varying
the heighth of the seat substantially us set forth.