Improved Combined Bookcase and Desk.
Year: 1892

page_text: Date of Application, 10th Mar., 1892-Accepted, 16th Apr., 1892
COMPLETE SPECIFICATION.
Improved Combined Bookcase and Desk.
1, PAUL CHRISTIAN WILHELM GANZLIN of Schwerin in the Grand Duchy
of Mecklenburg in the German Empire, Turner, do hereby declare the nature of
my invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This present invention relates to an improved combined bookcase and desk
whereby the latter can be used in sitting or standing posture the front plate lid
door or cover to the bookcase or other similar article of furniture being capable of
such adjustment that the said plate can be used as a desk in its highest position for
persons who write in standing and in its lowest position for those who write in
sitting posture.
Fig. 1 of the accompanying drawing is a perspective view of the bookcase when
closed.
Fig. 2 is a corresponding view with the plate or lid raised to the position for use.
when writing in a standing posture, and
Fig. 3 a like view with the plate or lid lowered for use when writing in a sitting
posture.
Fig. 4 is a detail view of a part of one of the side walls of the case and
Fig. 5 a detail of the guide for the plate or lid partly in elevation and partly in
section.
The bookcase or other receptacle a is closed by means of a plate or lid instead
of one or more doors as heretofore. Said front plate or lid is held in closed
position by the pins or pegs (Fig. 5) which run in grooves formed in or
between the guide rails c and in this position lie in the curved upper part d' of the
said groove.
The rails are let into or countersunk into the inner surface of the
side walls a' a² of the bookcase.
The lower free end of the plate b, which may be provided with a suitable lock,
is connected by means of the pivots to two lever arms d, d the opposite ends
of which are provided with two pivots e el which gear into inclined slots and
are retained in the same by means of suitable knobs or heads e' to the aforenamed
pivots. The slots are at their lower ends i directed downwards in an almost
vertical direction. When the plate or lid is closed the pivots eel of the levers d'
lie in the upper end of the guide slots as is evident from Fig. 1.
If it is
desired to place the plate or lid & into a position for writing in a standing posture as
shown in Fig. 2 it is only necessary to raise the lower end of the same until the
pivots e el of the levers d d' (which must follow the movement of the plate or lid)
reach the downwardly inclined part of the groovers. The plate or lid is
prevented from falling down by the pivots falling into the curved parts c¹ of
the rails c on the one part whilst the levers d d connected to the other end of
the plate or lid rest, by means of their pivots e e, in the vertical part of the
slots f
In order to bring the plate or lid & into the position for writing in sitting posture
as represented by Fig. 3 the same is raised a trifle and then drawn forwards so that
the pivots are freed from the curved parts and brought into the main
grooves c.
If the lower edge of the plate is raised a trifle, the pivots at the upper edge
can be moved down the grooves c until they reach the lower end of the same and
the plate given the position represented in Figure 3. The levers d d'or their
pivots e el follow the above described movement until they reach the part i of
the lat

page_text: .
In this manner the plate will by means of its pivots 626 and eel and the
levers be securely held in position.
In order to return the plate or lid to the position shown in Fig. 1 it is only
necessary to raise the upper end of the same until the pivots enter the parts c¹
of the grooves c.
Having now particularly described and ascertained the nature of my said
invention and the manner in which the same is to be performed I declare that what
I claim is :
1. My improved combined bookcase and desk substantially as and for the purpose
set forth.
2. A. bookcase, the door or lid of which can be arranged to form a desk for
writing in sitting or standing posture said door or lid being connected to the side walls
of the case by means of the levers d d', pivotally attached to the lid b, the
pivots e e¹ of the said levers being guided in the slots of the sides of the case
whilst the pivots of the plate & take into the lateral guide grooves c, the door
or lid being securely held in position by the pivots e e¹, 1, 2 taking into the parts i
or e', or i and c¹ of the grooves c and slots ff' of the case substantially as and for
the purpose specified, and as illustrated by the accompanying drawings.
Dated this 10th day of March 1892.
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C.,
Agents for the Applicant.