An Improved Arm-support for the Use of Bookkeepers.
Year: 1895

page_text: Date of Application, 31st Oct., 1895-Accepted, 7th Dec., 1895
COMPLETE SPECIFICATION.
An Improved Arm-support for the Use of Bookkeepers.
I ERNST KLEIN of Minden in the Empire of Germany, Manufacturer do
hereby declare the nature of this 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 this invention is a support, which may be arranged in relation to
a book, more especially a large book, such as a ledger in which writing is to be
done, so that it may form a continuation of the surface of the book, on which the
arm may be rested, when making entries on the lower lines of the pages or folios of
such book.
Heretofore in such arm-supports small boards are employed, which can be brought
into various positions in relation to each-other; but the inconvenience has been
found, that these supports are too complicated in the adjustment of the separate
boards and in their use, in consequence of screws, toothed segments and similar
adjustments being employed, for which reason also the supports are not strong
enough, occupy time in putting up or folding up and have protruding parts which
are apt to catch in a coat-sleeve etc.
These inconveniences are removed by the present invention. The improved
arm-support is composed of three boards a., b., c., connected with each-other hinge
fashion at or near their ends. In the boards a. and b. slots d are made and in these
recesses the supporting leaves f., capable of being turned round the axes e. are
housed. These supporting leaves are not quite of the breadth of the boards and
find reception, when the apparatus is put together, in the recesses g. of the boards,
so that they do not protrude and admit of the arm-supports being folded up flat
(Fig. 5). In the faces of the boards b. and c., opposite to the supports f., recesses h.
in the form of a series of teeth are provided, into which the supports can engage,
according to the position, that is required. In the highest position of the arm-
support (Fig. 1) the supports f. find abutment against the edges of the slots d. in
the boards and from this position, as Figs. 3 and 4 for instance show, different
positions corresponding to the size of the book with inclination to the right and
left, can easily be produced.
The regulation of either support f. can easily be done with one finger, ou raising
somewhat the respective board above it and another advantage is found in the fact
that each support f. is regulated for itself alone, so the required position of the
upper board can be easily obtained.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
An arm-support, composed of three boards, which are connected hinge fashion,
the upper board c. being held in the position required by means of supporting
leaves f., arranged to turn on or in the lower boards a. and b. respectively, adapted,
when the apparatus is closed, to be in recesses in the boards and be regulated
independently of each other.
Dated this 31st day of October 1895.
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.