An Improved Parallel Ruler.
Year: 1890

page_text: Date of Application, 27th Sept., 1890
Complete Specification Left, 25th Apr., 1891-Accepted, 30th May, 1891
PROVISIONAL SPECIFICATION.
An Improved Parallel Ruler.
I, THOMAS HENRY HINTON of 47 Clissold Road Stoke Newington London N.
Haberdasher do hereby declare the nature of this invention to be as follows:-
-
The object of my invention is to construct a ruler, for use where any number of
parallel lines are required, and for general purposes where an ordinary ruler can
be used.
With this object I manufacture a straight hollow case of metal, wood, or other
material, of any length and width required, curved on the upper surface, and open
under. The two ends of this case are closed by a plate of metal, or other material,
of the size and shape required. In the interior of this case, one or more, but
preferably two, rollers the whole length of the case, are pivotted to the end plates,
by means of screws, pins, or other convenient method. These rollers may be made
of any suitable material either hollow or solid, and should preferably be covered
with india rubber, or some other non-slipping, or elastic substance. The rollers,
where more than one is used, may be any distance apart.
By the use of my invention, any number of parallel lines can be ruled with
great facility, the rubber or other covering on the rollers being elastic prevents
the ruler from slipping while in use.
The rollers by projecting slightly below the lower edge of the case or ruler
proper, prevents any smearing or damaging of the paper, or other substance from
surplus ink. If preferred, I may add one or more ridges in the manufacture of
the outer case which by contact with the shoulder of the pen when in use, reduce
the contingency of soiling the surface of either the roller or the paper.
Dated this 27th day of September 1890.
GRAHAM & GRAHAM,
Agents for Applicant.
COMPLETE SPECIFICATION.
An Improved Parallel Ruler.
I, THOMAS HENRY HINTON, of 47 Clissold Road Stoke Newington London
Haberdasher, 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 my invention, is to construct a ruler that shall be specially applic-
able as a parallel ruler, for use where a number of lines are required to be drawn,
and also for all general purposes, where an ordinary ruler could be used. For this
purpose I manufacture a straight hollow case of any suitable material, but preferably
of metal, and of any required length and width. The upper surface of this case
is formed preferably with a double curve, but it may be made in other forms,
according to fancy, the under part of the case is left open. The two ends are
closed by a plate of any suitable material, but preferably metal, of the required
size and shape. In the interior of this case, one or more, but preferably two
rollers, the whole length of the case, are pivotted to the end plates by screws,
pivots or other convenient method or means. These rollers may be of any suitable
material either hollow or solid, and should be covered with india rubber or other
non-slipping or elastic substance, unless constructed of material that will present
a non slipping surface, Where two or more rollers are used, they may be placed
ΓΥ

page_text: any distance apart and they are pivotted in the case in such a manner that they
project below the open case so that it can be rolled over any flat surface without
any portion touching the same, the rollers alone being in direct contact with the
paper or other surface to be ruled. On any part of the case if necessary, one or
more ridges may be added in the course. of manufacture, such ridge or ridges
preventing the shoulder of the pen from coming in contact, with the case itself,
thus preventing the contingency of the surface of either the ruler or the paper
being soiled by the ink from the
pen.
For the better illustration of this my invention I have hereunto annexed a
sheet of drawings, in which, Fig. 1. represents an elevation, Fig. 2. a plan of the
under surface, Fig. 3 an end elevation and Fig. 4. a cross section of my ruler
in all of which the same reference letters refer to corresponding parts
namely, A, A, A, the outer case forming the ruling surface, B, B, end
plates C, C, the rollers pivotted to the end plates B. B. by the pins or
pivots D, D, D, D. The ridge formed on the case for the purpose above specified
is shown at E. F. F. (Fig. 4.) shows the flexible covering of the rollers C, C.
By the use of this my invention, parallel lines can be ruled with great facility, as
the rubber or flexible covering of the rollers, effectually prevents the ruler from
slipping while in use, and the projecting rollers prevent any part of the case or
ruling surface from touching the paper or other substance being ruled, and thereby
smearing or otherwise damaging it.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The construction and use of parallel rulers, as herein set forth, described and
illustrated.
Dated this 25th day of April 1891
GRAHAM & GRAHAM,
Agents for Applicant.