Improvements in Graphic Registering Apparatus.
Year: 1895

page_text: Date of Application, 17th May, 1895-Accepted, 14th Sept., 1895
Improvements in Graphic Registering Apparatus.
I, ELIS GUSTAF ADOLF SCHENSON, of Arbrå, in the Kingdom of Sweden,
Engineer, 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 the present apparatus is to indicate in a graphic manner upon a
travelling strip of paper a motion, for instance the motion of a vessel, in which
case it is connected with the revolving log.
My said invention is also adapted to indicate the length of wood passing through
a planing machine or a saw, in a given time, in which event it is connected with
some revolving part driven by the wood, preferably a roller or measuring wheel
resting against the said wood, or for similar measurements.
The apparatus consists of a style or the like moved to and fro upon a paper strip
driven by a clock-work or other motive power device. The said style is moved by
two screws revolving in different directions and adapted to drive the style
alternately. The screws are driven by the log, the roller, or in general by some
revolving part kept in a rotatory or oscillating movement by the motion of the
part it is desired to indicate.
The revolving part can be connected with the screws in different ways. For
instance this may be effected in a simple manner electrically by causing the screw
to be acted upon by the armature of an electromagnet, in the circuit of which,
united with an electric battery, the closing and the interrupting of the contact is
effected once during every revolution of the revolving log or the shaft of the
measuring wheel.
In the accompanying drawing
Figure 1 is a side elevation of the apparatus.
Figure 2 is a transverse section of the same.
Figure 3 is a plan and
Figure 4 is a modification hereinafter referred to.
Figure 5 is a detail of the guiding strip drawn to an enlarged scale and
Figure 6 is an underside view of Figure 5.
The style or the like a is secured in the cross-piece or carrier b, which may be
displaced along the two parallel screws c c. The screws are provided with toothed
wheels dd gearing one with the other and one of the screws is provided with a
ratchet wheel d' into which the pawl e engages, which pawl constitutes a lever and
forms the armature of the electro-magnet f, the said lever being provided with a
spring 9 which tends to pull it from the electro-magnet. If the circuit be 'closed
at every revolution or after a certain number of revolutions of the log, for instance
by providing the same with a projection actuating a contact button, the wheel is
turned one tooth at every revolution, the screws rotating in opposite directions.
The carrier b contains a slide or rack having a wormed part between the two
screws, which part, owing to the displacement of the slide, can be caused to engage
into one or the other screw. Parallel with the screws cc¹ there is a guide strip/i
and to the slide are fixed an upper pin k, which slides along the side of the said
strip, and a lower pink. The guide strip is provided with openings or apertures
at l'and at land with springs m and m² Figure 5 situated close to the apertures
and bent outwards at the inwardly directed ends, Figure 6, these springs being
arranged one at either end of the strip. The pin & being at the side of the strip
Price R71

page_text: which is directed towards the screws cc the slide engages in the screw c, the carrier
moving towards the spring m. Finally the pin k¹ passes under the spring and the
pink through the aperture at 1. Owing to the displacement of the slide caused
thereby, the latter disengages the screw and engages the screw c', and in this way
the carrier will be caused to move towards the other end of the guiding strip with
the pink outside the same, until the slide is re-adjusted by the pin k¹ passing
under the spring m', and so on. The style will in this way be caused to move to and
fro along the roller n running beneath its point, over which roller the paper strip n¹
moves. On this paper strip, which by means of a clock work is slowly advanced
from the roller n² and wound upon another roller, there will thus be traced a line,
which, when the log does not revolve passes along the strip but not obliquely over
As the graduated strip advances with a constant speed, it may be easily
ascertained when and how long the vessel has been in motion. The strip is guided
by the rollers o, n and p, of which the two latter are pressed against the former
owing to their being journalled in the arms p³ pivotted at p¹ and actuated by a
spring p².
the same.
The slide h, Figure 2 which owing to its alternate engagement with the screws c
and c¹ causes the style to move to and fro, can be arranged in different ways. Thus
it may for instance consist of a pivotted piece, like that represented in Figure 4.
In this case the piece can be turned on the pivot h¹ so as to engage at the top
with either screw. Its lower end, under which the guide strip is situated, moves on
either side of the said strip, and at the ends of the latter is actuated by the
springs m and m', which are arranged in front of the apertures 1, the piece being
in this way caused to engage with one or the other screw.
The above mentioned apertures in the guide strip are moreover not essential as
the pin of the piece h can be arranged to pass around the ends of the said strip,
being actuated by the springs mm' attached to the said ends.
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
1. A registering apparatus for graphically registering motion, for instance the
motion of a vessel, with the aid of a revolving or oscillating part depending upon
the said motion, consisting of a style or the like moving to and fro across a
travelling paper strip and operated by a slide, displaced alternately in the one or
the other direction by two screws driven by the revolving part and rotating in
opposite directions, with the object of tracing on the said paper strip a line
corresponding to the motion to be measured and running in zig-zag direction or
obliquely across the strip, or, when the motion has ceased, a line running along the
strip.
2. A. registering apparatus for registering the motion of a vessel, or motion of
wood through a planing machine or the like, consisting of a style or the like,
moving to and fro across a travelling paper strip, two parallel screws (cc) driven
by the revolving log or by a measuring wheel or the like pressing against the wood
and caused to rotate in different directions by suitable gear, and of a cross piece
movable along the screws and alternately driven by the one or the other screw
thus conducting the style or the like attached to it to and fro across the strip, with
the object of tracing a line on the strip corresponding to the motion to be measured
and extending across the strip, or, when the motion has ceased, a line running along
the strip.
3. The mechanism indicated in Claim 1 for operating the style or the like, viz. the
two screws and the slide operating the style and driven alternately by the said
screws.
4. In the apparatus designated in Claim 1, an arrangement for causing the cross-
piece or carrier to return when the latter has reached the edge of the strip,
consisting of a piece or slide (h) attached to the cross piece and movable in a
direction towards the screws, this piece (1) being provided with screw threads or

page_text: edges for engaging in one or the other of the said screws, a guiding strip arranged
parallel with the screws and operating the piece (h) and at the ends provided with
apertures (11), this guiding strip having near one aperture a spring (m) under
which the pin K' can pass, in order to be pushed through the aperture, and a
similar spring at the other aperture, in order that the piece (h) may be re-adjusted
for engaging with the other screw by being conducted through the aperture (1) at
the one or the other end of the ruler.
5. The modification of the arrangement indicated in Claim 4 in which the
guiding strip has the springs (mm) placed at the ends and adjusted for passing
the piece (h) around the same in lieu of causing them to pass through particular
apertures.
Dated this 17th day of May 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.