An Improved Instrument for Ruling Parallel Lines and for Dividing Purposes.
Year: 1891

page_text: Date of Application, 29th Aug., 1891
Compléte Specification Left, 29th May, 1892-Accepted, 2nd July, 1892?
PROVISIONAL SPECIFICATION.-
An Improved Instrument for Ruling Parallel Lines and for
Dividing Purposes.
I, ION ION PARASCHIVESCU of Rue Berzei No. 102 Bucharest in the Kingdom
of Roumania, Mechanician, do hereby declare the nature of this invention to be as
follows:-
.
My invention relates to an improved instrument or apparatus for the use of
draughtsmen in ruling parallel lines and for dividing spaces up for ruling parallel
lines or for other purposes.
The instrument is somewhat similar to a tee square, the ruling arm portion
being connected to the head. by a socket joint which enables. it to be readily
removed. Through this joint it is connected' to a rod carried in an open casing
on the head. Said rod is operated by a lever connected thereto by a sliding.
clip working in a cut-away portion of the casing, the lever being attached to a
rod or block sliding in a short piece of casing in which is a screw and a spring.
The end of the lever is operated on by a trigger,
The sorew before referred to has its end face or head divided into a suitable
number of parts, and close to said head is placed a divided scale. By turning the
head the screw can be advanced or retracted a regulated distance. from the rod or
block before referred to. By pressing upon the trigger the lever, the rod or block
and the sliding clip are operated and caused to draw the rod and its connected
arm down a distance which is regulated by the distance of the screw from the rod
or block. The trigger is then released; the arm is left in position for the required
line to be drawn, and the clip, rod or block, lever, and trigger may be returned
to their original position by means of the spring in-the short piece of casing.
By adjusting the screw the distance the ruling arm is to move is regulated; while
to divide a space into a given number of parts for ruling or for other purposes the
vernier scale is made use of.
Dated the 20th dor of Avent 1801
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Applicant's Agent.
COMPLETE SPECIFICATION.
An Improved Instrument for Ruling Parallel Lines and for
Dividing Purposes.
I, IóN IóN PARASCHIVESCU, of Rue Berzei No. 102 Bucharest in the Kingdom
of Roumania Meclinnician 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:-
My invention relates to an improved instrument or apparatus for the use of
draughtsmen in ruling parallel lines and for dividing spaces up for ruling parallel
lines or for other purposes,
To clearly explain my invention I will describe it with reference to the accom-
panying drawing in which
Figure is a plan view partly in section of the instrument, showing a few parallel
lines ruled by same.
Figure 2 is a section of the ruling arm portion of same on the line a--a Figure 1.
Figure 3 is a rear view of the instrument partly in section.
Figure 4 is a section taken on the lines bc Figure 1, ad
Figure 5 is an end view of the regulating screw.

page_text: The instrument as shown is somewhat similar to a tee square, the ruling arm
portion being connected to the head 2 by means of a socket 3 of bent metal
formed as shown in Figures 1 and 2 into which slips a tapered piece 4 said piece 4
being secured to the underside of a rod 5 as shewn in Figure 4 said rod sliding in
an open casing 6. This casing is formed of bent metal and has a flange portion 6ª
by which it is secured to the head 2.
The rod is adapted to slide up and down in the casing 6 and to effect this the
casing is cut away in the centre so as to expose the rod with which engages at this
point a sliding frictional clip 7 the clip having a lever 8 attached to it or forming
part thereof.
The portion of the casing which is cut away to expose the rod
is turned up as shown so as to form a short length of open casing 9 in which
slides a block 10. This block 10 is connected to the lever 8 by means of a
bent arm 11 affixed to the block at one end while the other end passes into a
hole in the lever 8 as shewn in Figure 4 said hole being slightly elongated or slotted
Bo as to allow the arm a certain amount of play. The lever 8 passes through a
slot in the flange of the casing as shewn in Figures 3 and 4 and its end passes
into a slot in a metal piece la to which is pivoted a trigger 16 one end of
which is adapted to be operated by the thumb while the other end engages with
the lever 8. This trigger piece may however be dispensed with and the instrument
operated by directly moving the lever 8 with the fingers, though the arrangement
is not so convenient. In the casing 9 is also a screw 12 (the head 13 of which
may carry any suitable number of divisions) and a spring 14 said spring pressing
the block 10 up to the end of the casing it being limited by its attached lever 8
which bears against the end of the slot in the casing flange. By turning the head
the screw can be advanced or retracted a regulated distance from the rod or
block 10 which distance will represent the space between the parallel lines which
are to be drawn as the block 10 will only be able to slide for that distance in the
casing 9.
A flat spring 17 also slotted to allow the lever 8 to pass through is placed to
bear up against the casing 9, its free ends pressing upon the rod 5 as shewn in
Figure 1 the object of this spring being to offer a frictional resistance to the retreat
of the rod after it has been moved by the clip. Beueath the head of the screw 13
is situated a short.scale 18 which may be used together with or apart from the
scale on the head of the screw for determining the distance that the screw is to be
withdrawn where lines a specified distance apart are to be drawn or where a space
is to be divided into a given number of parts.
The operation of the instrument is as follows:-By pressing on the thumb piece
of the trigger, the lever 8 is acted upon, thus through the arm 11 which connects
it to the block 10 causing the latter to more down against the pressure of the
spring 14 until it comes in contact with the end of the screw 12, the clip 7 on the
lever 8 having at the same time (by the torsional strain exerted on the lever 8)
gripped the rod and drawn same together with its attached arm 4 and ruler í
down the same distance. Upon releasing the trigger the spring 14 forces the
block 10 and connected parts back to their original places, the clip 7 simply
sliding back along the rod which is held in place, by the spring 17 while the
ruler arm of course remains in the position in which it has been last put.
When the rod has been worked down till its upper end has nearly reached the
cut away part of the casing it may be pushed back by hand, the clip offering but
little resistance to this.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
.
1 An improved instrument for ruling parallel lines and for dividing purposes
having a ruling arm attached to a sliding rod operated by a frictional clip the
amount of travel of which is limited by a screw or other stop device substantially
ad-scribed.

page_text: 2. An improved instrument for ruling parallel lines and for dividing purposes
having a detachable ruling arm connected to a sliding rod suitably held and
operated by a frictional clip connected to a sliding block which is moved against
the pressure of a spring to bring it into contact with an adjustable stop and a
scale by means of which such stop can be set so that the distance the ruling or
dividing arm is to move can be accurately determined substantially as described.
3. The combination with the instrument described, of a trigger for moving the
operating arm substantially as described.
4. The improved instrument for ruling parallel lines and for dividing purposes
substantially as described and illustrated.
Dated the 98th der of Nov 1802
PHILIP M. JUSTICE, Fel. Chart. Inst. P.A.,
55 & 56, Chancery Lane, London, Agent for the Applicant.