Year: 1896

page_text: Date of Application, 20th July, 1896-Accepted, 20th July, 1897.
The present Invention relates to various improvements in the method of transmitting
motion to the band of paper as well as in the gradient, speed, and time registering
mechanisins.
Our improvements are illustrated by way of example in the accompanying drawings
wherein Figure 1 is a plan view, Figure 2 an elevation, and Figures 3 and 4 opposite
end views of the apparatus. Figure 5 shews a development of the wheel work
represented in Figure 3. Figure 6 is an elevation and transverse section of the
improved arrangement of time-recording device. The same letters of reference
designate the same parts in all these figures.
In our previous application above referred to the apparatus is supposed to be placed
in front of the driver but it will be understood that it might be placed on his right or
left hand.
The apparatus is graduated for a wheel of given radius and for a wheel of any other
diameter it would be necessary to alter the dimensions of the parts transmitting
movement to the band of paper.
The band of paper is operated in the following manner :-Motion is imparted to
one of the cranks A on shaft B and is transmitted to the rollers C Ci by the
gearing D, D¹ D,D³ D', D' D°, D' D', D' D10, D11 D1º, these rollers carrying the paper

page_text: along between themselves and the roller E. The gearing is so proportioned as to give
the proper speed to the paper relatively to the radius of the locomotive wheel. The
paper wound for instance on roller F passes hetween the rollers Cand E, then between
the stretching roller G, and the presser H, round roller 1, then between the
stretching roller G, and the presser H, hetween rollers C and E, and is finally wound
on the roller Fi. The roller G and the presser H are removable to enable the paper
to be mounted in position and the roller E may be pushed back for the same purpose
(Figure 4). By means of this series of winding and stretching rollers a normal feed
of the paper is ensured.
When the direction of running is reversed, the roller F winds up the paper which
is unwound from roller F. These two rollers are geared together by a belt, as shewn
in Figure in dod-and-dash lines, the belt passing over a series of guide
rollers III so as to only be in contact with the paper on the rollers F F1, The
paper being carried along by the rollers CC which press against the roller E, the
motion communicated to the roller is transmitted to roller F and vice versa when
the direction of motion is reversed. The belt by bearing on the paper ensures that
such paper is wound up on one roller as it is unwound from the other. The spindles
of rollers are extended through the plates of the frame and provided with a
crank handle for winding up the paper the end of which is secured in a longitudinal
groove in the spool.
In this example the diagram is traced as before by three independent pencils the
first tracing the gradient, the second the speed, and the third the time.
The gradients are indicated by a plumb bob J, as described in our former
application before referred to, in Figure 2, which by a lever J imparts sliding motion
to the pencil carrier K in a direction parallel to the axis of roller G around which
the paper passes. When the vehicle is running on a level road the plumb bob
occupies its noriual position and the diagram traced by the pencil is a straight line.
When the gradient rises or falls the plumb bob assumes a certain angular position
moving the pencil to the right if the gradient is a descending one (the apparatus
being supposed to he mounted at the right hand side of the locomotive) and to the
left for a rising gradient and the distance of the line traced from the line traced in
the normal position indientes the amount of gradient.
The visual indication is given by an index K' (Figure 4) movable about a fixed
point K and actuated at its lower end by a pin and slot engagement with the plumb
hob. The upper end of the rod K¹ forms an index moving over a graduated scale X
upon which may be read off the direction and amount of the gradient (Figure 2).
Speed is indiented as described in our former application by a centrifugal indicator L
(Figure 2) actuated by the shaft I.' from the wheel of the vehicle through bevel
gear M M.
By the descent of the upper part of the indicator proportionally to the
speed, the lever N is caused to pull upon a chain passing over roller O on whose axis
is keyed the pulley O', whence leads a second chain to the barrel O', this chain being
also fixed to the pencil carrier P. When by the downward motion the roller O is
cansed to turn, it carries with it pulley which winds up the chain which carries
along the pencil carrier P and winds up spring barrel O. On the return motion the
spring of farrel draws back the pencil carrier P. The pencil carrier is provided
with an index which moves over a graduated scale Y, Figure 2.
The time is indicated visually by a clock dial and graphically (Figure 2) by a pencil
moving parallel to the axis of the cylinder and having a certain range of motion in a
given time. The pencil carrier Q (Figure 2) engages by a pin in a fork R receiving
fo and fro motion from a clockwork through the medium of a rectangular sliding
frame (Figure 6) having two opposing racks S S which gear alternately with the
semi-cylindrical pinion T fixed on one of the arbors of the clock movement.
Having now particularly described and ascertained the nature of the said.
Invention and in what manner the same is to be performed we declare that what we
claim is
1st. An indicator apparatus of the kind described wherein the paper is carried along

page_text: by two rollers receiving rotary motion through a train of gearing and unwinding from
one drum as fast as it is wound up on a second drum, the two drums being connected
by a belt which partly encircles the drums and passes over a series of rollers as
specified.
2nd. An indicator apparatus of the kind described wherein the gradients are
indicated by a plumb bob jointed to a lever which transmits motion to a sliding pencil
carrier and to an index as specified.
3rd. An indicator apparatus of the kind described wherein the speed is indicated by
a centrifugal velometer the upper part of which descends as the speed increases and
through the medium of a lever and a chain imparts sliding motion to a pencil carrier
and an index as specified.
4th. An indicator apparatus of the kind described wherein the time record is
obtained by means of a sliding frame which transinits to the pencil carrier through a
fork the to and fro motion which it receives from a semi-circular toothed wheel
gearing alternately with two racks on the opposing sides of the said frame the
semi-circular toothed wheel being keyed on one of the arbors of the clock, all
substantially as specified.
Dated this 18th day of July 1896.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.