An Improved Ruler.
Year: 1888

page_text: Date of Application, 6th Dec., 1888
Complete Specification Left, 6th Sept., 1889-Accepted, 12th Oct., 1889
PROVISIONAL SPECIFICATION.
[Communicated from abroad by NICOLAI VERMELVREN, of 17, Tordenskjoldsgave,
Copenhagen, Denmark, Merchant.]
An Improved Ruler.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention to be as follows:-
This invention relates to rulers, by which a horizontal plate is provided on each
side of the same with another horizontal but thinner plate in the middle, whereby
the said middle plate, which is the ruler proper, projects about an inch from
the other plates, thus forming an edge, along which the pen, pencil or the like is
drawn.
The improved ruler consists of a thin right-angled piece of metal plate porcelain,
glass or other material provided with rounded corners.
This plate which forms the ruler proper has on both sides flat pieces of wood
which are fastened thereto by screws or in any other suitable manner. The wood
coverings serve the purpose of keeping the ruler proper at such a distance from
the material on which the lines are being drawn that it cannot be brought in contact
with the fluid from a pen or the like which may adhere to the said ruler.
In order to effect this the said ruler proper projects a suitable distance, say
an inch beyond the wooden covering and is perfectly horizontal to both sides so
that it prevents the ink or other fluid which might adhere to the ruler from running
onto the paper and spoiling the same. The improved ruler will thus prevent any
blurring of the lines on the paper.
Dated this 6th day of December 1888.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Ruler.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent Agents,
Southampton Buildings 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 :-
This invention relates to rulers which are provided on each side with a horizontal
plate. The ruler proper which consists of a thin middle plate, projects about inch
from the other plates, thus forming an edge, along which the pen pencil or the
like is drawn.

page_text: contact with the fluid from a pen or the like which may adhere to the said
ruler M.
In order to effect this the said ruler M projects a suitable distance, say inch
beyond the wooden covering and is perfectly horizontal to both sides, so that it
prevents the ink or other fluid, which might adhere to the ruler from running on
to the paper and spoiling tho same. The improved ruler will thus prevent any
blurring or blotting of the lines on the paper.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed as communicated to me by
my foreign correspondent I declare that what I claim is :-
A ruler consisting of a right-angled plate M provided on both sides with narrower
plates H and H' secured to the said ruler.
Dated this 6th day of September 1889
HASELTINE, LAKE & Co..
45, Southampton Buildings, London, Agents for the Applicant.
HASELTINE, LAKE & Co..
45, Southampton Buildings, London, Agents for the Applicant.