Improvements in Elevators, Raised Stands, and the like.
Year: 1894

page_text: Date of Application, 30th Mar., 1894-Accepted, 2nd June, 1894
COMPLETE SPECIFICATION.
Improvements in Elevators, Raised Stands, and the like.
A communication to me from CURT BENTZIN, of Goerlitz, in the Empire of
Germany, Joiner.
I, EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 65, and 66, Chancery Lane, in the County of Middlesex, 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 and accompanying drawing, that is to say :-
This invention relates to a new or improved elevator, which may be used for
different purposes.
In the accompanying drawing which is in illustration of the invention :
Figure is an elevation shewing the lower position of the parts,
Figure 3 is a similar view in a higher position of the parts and
Figure 2 is a plan thereof.
Similar letters of reference indicate similar parts throughout the drawings.
The elevator consists of a support a upon which a screw spindle b is fixed.
Upon this spindle b moves a nut or threaded plate f which in the present case is
shewn triangular.
At the lower non-threaded part of the
plate e having the same form as the plate
by a collar h.
spindle 6 is capable of being turned a
and secured against vertical movement
To the said plate e I fix the lower link levers c by means of screws d'. The
levers e which are arranged above the lower levers, and connected to the latter by
means of screws or bolts d, are fixed to the threaded plate ƒ by means of screws fl
whilst the upper outer link levers c are fixed to the platform g by means of
screws g. Upon the platform g may be provided a balustrade i.
The elevator may be operated by the rod k connected to the lower plate e
either by manual or by animal force, but it may also be actuated by means of
steam, electricity or the like.
In rotating the plate e in the one direction the threaded plate fis moved upwards
on the spindle b. Thus the link levers c are extended whereby the platform g is
raised.
In rotating the plate e in the other direction the threaded plate f is moved
downwards, whereby the link-levers c are contracted and the platform is lowered.
It is obvious that the velocity with which the raising and lowering is effected,
depends upon the pitch of the screw spindle b.
If it is required, a brake device may be arranged for preventing an accidental
downward movement of the threaded plate in raised position. Though in the
example shewn but three sets of link levers are provided for, more than three may
be used if required.
A
It is obvious that the improved elevator may be used for different purposes.
For instance it would be very convenient for the purpose of observation in the case
of war, since it occupies little space by reason of its simple construction.
further advantage consists in the fact that it may be raised and lowered very
quickly.
The apparatus could for instance also be employed as an office stool. In this
case the balustrade is dispensed with and the apparatus is surrounded with a
suitable casing.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
An elevator, consisting of a screw spindle b, fixed upon a support a and provided
with a threaded plate fa lower plate e capable of being turned round the screw-
spindle b and secured against vertical movement, link levers c connected with
each other and with the plates, and a platform g, connected to the upper end of
the link-levers c, all arranged and operating substantially as and for the purpose
set forth and illustrated.
Dated this 29th day of March 1894.
EDWARDS & Co.,
65 & 66, Chancery Lane, London, Agents for the Applicant.