Improvements in Tables for Writing, School, and other Purposes.
Year: 1890

page_text: Date of Application, 13th Nov., 1890
Complete Specification Left, 30th July, 1891-Accented
1001
PROVISIONAL SPECIFICATION.
Improvements in Tables for Writing, School, and other Purposes.
Communicated from abroad by CARL SCHUSTER, Dorotheenstrasse No. 25,
Berlin.
I CHRISTEN REES BONNE of 41 Eastcheap E.C. in the County of London,
Patent Agent do hereby declare the nature of this invention to be as follows:-
The object of my invention is to provide a table which can easily be adjusted in
such a manner that it affords a convenient support for writing suitable to the height
of the person using it.
The table according to my invention consists of the usual frame on top of which
is placed a box shaped contrivance, two beams passing from back to front of same
and two similar beams from side to side.
To the former are fixed carriages for a shaft of two eccentrics which are connected
with the under side of the desk proper by means of elastic bands, such as steel,
leather or the like.
To the beams passing from side to side is attached two sliding metal bars, the
other ends of which are hinged to the desk.
When now the desk plate is pulled forward the straps attached to same, cause the
eccentries to turn thus lifting the plate from its horizontal to a slanting position, to
facilitate which action wedge shaped attachments are sometimes affixed to the desk
plate for the eccentrics to act against.
In order to fix the plate in any desired position when pulled forward, racks with
stopping levers are provided.
Dated this 13th day of November 1890.
C. R. BONNE & Co,
41, Eastcheap, London, E.C., Authorized Patent and Trade Mark Agents.
COMPLETE SPECIFICATION.
Improvements in Tables for Writing, School, and other Purposes.
Communicated from abroad by CARL SCHUSTER, of Dorotheenstrasse 25, Berlin,
in the German Empire, Manufacturer.
I CHRISTEN REES BONNE of 57 & 58 Chancery Lane (formerly of 41 East-
cheap) in the City of London Patent Agent, do hereby declare the nature of 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 :-
The object of my invention is to provide a table which can easily be adjusted in
such a manner that it affords a convenient support for writing suitable to the height
of the person using it.
The table according to my invention consists of the usual frame on top of which
is placed a box shaped contrivance, two beams passing from back to front of same
and two similar beans from side to side. To the former are fixed carriages for a
shaft of two eccentrics which are connected with the underside of the desk proper
by means of elastic bands such as steel leather or the like. To the beams passing
from side to side are attached two metal sliding bars, the other ends of which are
hinged to the desk.
When now the desk plate is pulled forward the straps attached to same cause the
eccentrics to turn thus lifting the plate from its horizontal to a slanting position to

page_text: facilitate which action wedge shaped attachments are sometimes affixed to the desk
plate for the eccentrics to act against.
In order to fix the plate in any desired position when pulled forward racks with
stopping levers are provided.
To make the details of my invention clearly understood will now proceed
to further describe the same by reference to the accompanying drawings, in
which
Fig. 1 is a vertical section (on line Fig. 2) and Fig. 2 a horizontal section.
Fig. 3 end sectional view. Figs. 4, 5, 6 and 7 represent various details on a larger
scale. Figs. 8 and 9 are sectional views of a modified form of my improved arrange-
inents. Fig. 10 is a detail view.
In these figures, a is the frame of the table on top of which the part is fixed.
e care cross pieces or beams extending from front to back of the frame a, above these
be ng the beams d d which pass lengthways of the table from side to side of the said
frame a.
The beams e carry upon their upper surfaces the bearings or supports ee
in which the shaft or spindle is mounted. To the beams d d are affixed guides y g
through which pass the sliding bars hinged at their front ends to the desk A.
Upon the shaft or spindle the eccentrics or cams k k are mounted the motion of
the said cams or eccentrics being effected by means of straps ss attached to same at
one end and fixed to the under side of the desk A at the other end. 1 (Fig. 3)
represents a triangular or wedgeshaped attachment upon the undersurface of the
desk A.
The piece or pieces e rest upon eccentrics kk when the desk is drawn forward
and raised into a sloping or inclined position as shown by the dotted lines in Fig. 3.
2 shows a small roller to facilitate the to and fro movement of the sliding bars hh.
To prevent the bars being withdrawn too far they may be provided with a groove
or recess into which catches the projecting part w (Figs. 6 and 7).
To enable the desk A to be fixed in any desired position when pulled forward the
rack (Figs. 4 and 5) is provided, into which takes the lever a actuated by spring p
attached to the recessed portion m of cross bar d.
22
In Figs. 8, 9 and 10 the eccentrics are dispensed with and in place thereof the
levers are provided. To secure the sliding bars h against backward movement
when drawn forward as in Fig. 9 the groover may be made on underside
thereof.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
-
(1) The adjustable table or desk shown by Figs. 1 to 7 of the accompanying
drawings comprising the framework ab with cross bars cd, sliding bars and
eccentrics kk for holding the desk A in any desired position as hereinbefore
described.
(2) The adjustable table or desk shown by Figs. 8, 9 and 10 of the accompanying
drawings in which the levers kk operated by the forward movement of sliding
bars support the desk A as hereinbefore described.
(3) In the adjustable table or desk shown by the accompanying drawings the
rack t, lever n and spring p for holding the desk in any desired position as shown in
Figs. 4 and 5 and hereinbefore described.
Dated 22nd Tuna 1801
BONNE & Co.,
Registered Patent Agents, 57 and 58, Chancery Lane, London.
Agents for the Applicant.