Improvements in Pressure Recorders.
Year: 1894

page_text: Date of Application, 2nd June, 1894
Complete Specification Left, 27th Feb., 1.95-4ccepted, 4th May, 1895
Improvements in Pressure Recorders.
I JAMES NAYLOR, Junior, of 782 Parker Street, Roxbury, Massachusetts,
United States of America. Mechanical Engineer, do hereby declare the nature of
this invention to be as follows:
My improvements relate to a recording apparatus combined with an ordinary
chronometer or clock and a pressure gauge.
The object of this invention is to obtain an accurate, legible and continuous
transfer upon a paper blank of the time as shown by the clock simultaneously with
the pressure as indicated by the gauge.
According to one method of carrying out my invention I provide a continuous
paper blank upon which are printed the divisions of time and of pressure having
on its margins regular perforations therethrough in a straight longitudinal line.
The time divisions are printed transversely along the blank heavy transverse
lines showing the hour divisions and an arrow being placed at every sixth division
to indicate a quarter of the day. Near to the arrow points are the letters M, N,
a.m. and p.m. which signify respectively midnight, noon, 6 a.m. and 6 p.m.
Quarter hours are shown by lighter transverse lines and the lightest transverse
lines indicate intervals of five minutes.
These divisions are preferably printed upon a continuous roll, and they may he
printed in any desired lengths.
The pressure divisions are shown by longitudinal dotted lines, each division
These
representing for example, a difference of pressure of five pounds.
graduations begin at one side of the blank and extend to the other side thereof,
figures being printed if desired to shew the number of pounds pressure to the
square inch and corresponding with the dial figures of the pressure gauge.
At the right hand margin are printed in numerals the year, the months, and days
of the months.
The printing and arrangement of these lines and letterings may be altered to
suit special requirements.
The perforations through margin of the paper are for the engagement of a
toothed feed roll, thereby making the paper blank the mechanical equivalent of a
rack. The paper blank is supported at a proper elevation on a suitable table
secured to a base plate.
+
I provide a pressure gauge having a stem extending through the back of its
case. Secured to this stem is a spur gear which engages with a rack, said rack
being supported and held laterally by suitable rolls and in place by projections
secured to the chronometer and gauge cases and extending over the rack bar, so as
to prevent its falling out.
Upon the rack is provided a holder for the pen, pencil or other marking point.
This holder may be secured to the rack in any simple way, but I prefer to have it
freely jointed in a vertical plane. I secure collars close against the hub of the
holder through which the rack passes and prevents lateral motion of said hub on
the rack, the holder with the marking point however being able to be raised from
the paper blank and replaced at will.
The chronometer or clock by any devised means, communicates motion to the
feed roll which is mounted on a suitable shaft. Said feed roll is provided with
teeth which engage in the perforations of the paper blank and move the same
forward at the correct rate in accordance with the time divisions.
The circun:ference of the feed roll is preferably equal to the length of an hour

page_text: division of the blank, the number of teeth of the feed roll being equal to the
number of perforations of the blank corresponding to an hour division.
The feed roll is integral with its shaft which extends into the chronometer case,
and then through said case to the outside terminating in a knob by means of which
said shaft can be turned when desired. The said shaft has three journal bearings
and receives its motion from the time movement through a suitable friction driving
device which may consist, for example, of a mitre gear driven by the clock move-
ment, which gear drives another mitre gear which is mounted loosely upon the feed
roll shaft between two collars and an intervening spring.
The bearing of the feed roll shaft is in the end of a thumb lever by which said
shaft is held at right angles-with-the blank. Said thumb lever is fulcrumed upon
a screw which is screwed tight into the table, and by pressure upon the thumb piece
of the lever the feed roll is raised. There is a depression in the table so that the
teeth of the feed roll may reach below the surface of same.
The feed roll shaft being of small diameter it springs sufficiently to allow the
engagement or disengagement of the teeth of the feed roll into or out of the
perforations in the blank by pressure upon the outer end of the thumb lever.
I provide drop hangers secured to the underside of the base for supporting the
continuous paper blank said drop hangers having set screws to carry a roller from
which the blank is unwound. Other simple means may be employed.
The operation is as follows:-
The gauge shows by its pointer and dial what the pressure is. The first spur
gear on the stem of the gauge moves with the pointer of the dial, and by means of
the rack and holder moves the marking point or pencil transversely on the paper
blank.
Meanwhile the clock movement is driving the feed roll shaft through or by
means of the friction device, and motion is given the feed roll, which moves the
paper blank forward under the marking pencil and thus a line is marked thereon
recording the pressure as shown by the gauge. Supposing the time to be noon,
December 25th, 1892, the paper blank is punched near one of the arrow points
on the right hand margin through the letter N signifying noon, through the day
numeral 25 signifying the day of the month, and through the month numeral 12
signifying the twelfth month.
The heavy line at the punched arrow point being noon, the paper blank is fed
along by turning the knob at the end of its shaft until said heavy line is directly
under the marking pencil.
The operation is thereafter automatic. The time as shown by the clock dial, is
indicated on the paper blank, and may be read by the time lines thereon, and the
pressure as seen by the gauge is marked continuously on the blank, and may be
also read by the pressure lines.
The recorded blank may be re-wound into a roll or cut off at pleasure in any
length without interfering with its operation.
The record may be preserved for inspection, reference and proof which in many
cases may become valuable.
Instead of the several pressure lines as shown on the paper blank, a normal line
may be drawn by an auxiliary marker; in which event only the time lines would be
printed on the paper blank.
The pencil or marking point bears on the paper blank by the gravity of the
pencil and holder, and an adjustable weight is secured thereto for the purpose of
adapting the pressure of the marker so as to make a legible line and yet not bear
hard enough to create undue friction.
The weight is made adjustable on the pencil holder by a set screw or other
device.
Dad:
1004
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: Improvements in
1, JAMES NAYLOR, Junior, of 782 Parker Street, Roxbury, Massachusetts,
United States of America, Mechanical 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 :-
This invention relates to a recording apparatus combined with an ordinary
chronometer or clock and a pressure gauge.
The object of the said invention is to obtain an accurate, legible and continuous
transfer upon a paper blank of the time shown by the clock and of the pressure
simultaneously indicated by the gauge.
In the drawings,
Figure 1 is a front elevation of a combined gauge, clock and pressure recorder
constructed according to my invention;
Figure 2 is a plan of the same;
Figure 3 shows a detail, hereinafter described.
Figure 4 is a plan of a portion of a chart or record;
Figure 5 is a rear elevation of the apparatus shewn in Figure 1, the chart being
removed;
Figure 6 a longitudinal section of the friction driving device, and
Figure 7 an enlarged transverse section through the table, the paper blank and
the toothed feed roll.
A is a base or frame upon which the several parts are secured. B is a continuous
paper blank upon which are printed the divisions of time and of pressure.
B', B' are perforations in a straight line along the margin of the blank.
The time divisions are printed transversely along the blank as follows: The
distance from a to a¹ represents six hours or one quarter of the day, and is
indicated by the printed arrow points on the right hand margin. Near to the
arrow points are the letters M, N, a.m. and p.m. which signify respectively
midnight, noon, 6 a.m. and 6 p.m. The distance from a to a² represents one hour.
The hour divisions are shown by the heaviest transverse lines. The distance from
a to a³ indicates fifteen minutes. These divisions are shown by lighter transverse
lines. a to a' indicates five minutes. The five-minute-lines are as light as it is
practicable to make them.
The divisions are ruled or printed upon a continuous roll of any desired length..
The pressure divisions are shown by the longitudinal dotted lines, each division
representing in the present case, a difference of pressure of ten pounds. They
begin at the left and extend to the right as shown by the figures 10, 30, 50 and
60 on, signifying pounds pressure to the square inch and corresponding with the
dial figures of the pressure gauge.
At the right hand margin are printed in numerals the year, the months, and days
of the months.
The printing and arrangement of these lines and letterings may be altered to
Euit special requirements.
The perforations B₁ through the paper are for the engagement of a toothed feed
roll, thereby making the paper blank the mechanical equivalent of a rack as shewn
in Figure 7.
C is the table or support for the paper blank. The said table is
held at proper elevation by the supports c c.
D is a pressure gauge. The stem or spindle d that carries the index finger
projects through the back of the case, and has secured thereon the spur wheel E²
that engages with the rack E. This rack is supported and held laterally by the
rollers and is prevented by the projections ƒ ƒ from becoming displaced.

page_text: The said projections are secured to the chronometer and gauge cases and extend
over the rack bar.
Upon the rack is provided a holder G for the pen, pencil or other marking
point g.
This holder may be secured to the rack in any simple way, but I prefer to
have it freely jointed in a vertical plane as shown in Figures 1, 2 and 3. g g are
collars set close against the hub of the holder to prevent lateral motion of the said
hub on the rack, the holder with the marking point however being free to turn on
the rack bar to allow of its being removed from the blank and replaced thereon
at will.
H is the chronometer or clock from which by any suitable means, motion is
communicated to the feed roll I which is mounted on the shaft J. The said feed
roll is provided with_teeth_i, Figure 7, which engage in the perforations of the
paper blank aud move the blank forward at the correct rate in accordance with the
time divisions. The circumference of the feed roll I is equal to the hour divisions
of the blank, the number of teeth of the feed roll being equal to the number of
perforations of the blank corresponding to an hour division.
In the construction shown, the feed roll is integral with the shaft J which
extends into the chronometer case, and through it to the knob J. The shaft J has
three journal bearings jjj and receives its motion from the clock movement
through a friction driving device L as follows:-The mitre gear is driven by the
clock movement as seen in Figure 2 and drives the mitre gear which is mounted
loosely upon the shaft J between the collars j³ j and intervening spring j³, the
whole constituting the friction driving device.
The bearing of the shaft J is in the end of a thumb lever M by which said
shaft is held at right angles to the edge of the blank. The said lever M is
fulcrumed upon the screw m which is screwed tight into the table C. On pressing
upon the thumb piece of the lever M the feed roll is raised from the blank, the
shaft J being sufficiently flexible to allow it to spring and thereby disengage the
teeth of the feed roll from the perforations in the blank. There is a depression
in the table as seen in Figure 7 so that the teeth of the feed roll may reach
below the surface of table. For supporting the continuous paper blank I provide
means shown in Figures 1 and 5, consisting of drop hangers P, P secured to
the underside of the base A and provided with set screws to carry a roller Pl
from which the blank is unwound. Other simple means may be employed for this
purpose.
The operation of the aforesaid device is as follows:-The spur gear E2 turns
with the index finger or pointer of the gauge, and by means of the rack and
holder moves the marking point or pencil 9 transversely over the paper blank in
accordance with the variations of pressure.
Meanwhile the clock movement drives the shaft J through or by means of the
friction device above described and motion is thereby given to the feed roll I,
which moves the paper blank forward under the marking pencil 9 and thus a line
is marked thereon which records the pressure shown by the gauge at every moment
of the day. Supposing the time to be noon, December 25th, 1892, the paper blank
is punched near one of the arrow points on the right hand margin through the letter N
signifying noon, through the day numeral 25 signifying the day of the month, and
through the month numeral 12 signifying the twelfth month.
The heavy line at the punched arrow point being noon, the paper blank is fed
along by the knob. J until said heavy line is directly under the marking pencil.
The operation is thereafter automatic. The time as shown by the clock dial is
indicated on the paper blank, and may be read by the time lines thereon, and the
pressure as seen by the gauge is marked continuously on the blank, and may be
also read by the pressure lines.
The recorded blank may be re-wound into a roll or cut off at pleasure in any
suitable length without interfering with its operation.
The record may be preserved for inspection, reference and proof and may in
many cases become valuable.

page_text: Instead of the several pressure lines as shown on the paper blank, a normal line
may be drawn by an auxiliary marker G¹ shown in Figure 4 by the dotted lines;
in this event only the time lines need be printed on the paper blank.
The pencil or marking point bears on the paper blank by the weight of the.
pencil and holder, and the adjustable weight N¹ secured thereto (see Figure 3)
which is for the purpose of adapting the pressure of the marker so as to make a
legible line and yet not bear hard enough to create undue friction. The weight N¹
is adjustably secured on the pencil holder by the set screw O.
Having now particularly described and ascertained the nature of the said inven-
tion 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 :-
1. The combination with a chronometer of a perforated blank, and mechanism
driven by the said chronometer and engaging with the perforations of the said
blank to move it forward over a stationary surface, substantially as shown and
described.
2. The combination with a gauge and chronometer having exposed dials of a
continuous paper blank provided with perforations in a straight line, a stationary
table, driving mechanism between the chronometer and blank to move the latter in
a straight line, and connecting mechanism between the gauge and a pencil to move
the latter transversely over the blank substantially as, and for the purpose,
specified.
3. The combination of a pressure gauge having a spur gear E² secured to the
pointer stem d, an engaging and supported rack bar, a pencil and holder adjustably
secured to the said rack bar, the supported and perforated blank, a chronometer,
and driving mechanism from said chronometer to directly engage said blauk,
substantially as shown and described.
4. the combination, with a supported rack bar operatively connected to a gauge
and a gravity controlled marking pencil and holder secured to the said bar; of
a stationary support to sustain the said pencil and holder, as herein set forth.
5. The combination, with a stationary support, of a pencil and holder mounted
upon a rack bar and held from lateral movement upon said bar, but possessing
freedom to move in other directions, a gauge, and mechanism connecting the rack
bar to the gauge, as herein set forth.
6. In a recording apparatus, the combination, with a chronometer, a friction
driving mechanism, shaft J and the toothed feed roll, of the stationary table
having its upper surface extending in a plane in advance, and in rear, of the
said toothed feed roll, and the perforated paper blank, as herein set forth.
7. In a recording apparatus, the combination of the stationary support C having
a level upper surface, a perforated blank supported thereby, the marking pencil
and toothed feed roll located directly over the said level surface of the support C, and
operative mechanism to connect said pencil to a gauge and said roll to a chronometer,
substantially as shown and described.
8. The combination of the stationary table C having a depression therein for
the teeth of the roll, the perforated blank and the supported and driven toothed
feed roll, as and for the purpose specified.
9. The combination of the table C having a depression under the teeth of the
roll, the lever M pivoted to the said table, the feed roll and the flexible shaft .J
acting as a spring to bring the teeth of the roll into re-engagement with the blank
after said roll has been raised by the lever M, substantially as and for the purpose
specified.
10. The combination of the gravity-acting pencil and holder, adjustable weight N,
supported and operated rack bar F, collars g', g', and stationary table C located
directly under the said pencil as herein set forth.
11. The blank having time divisions marked by transverse lines, and a
perforation opposite to or in line with each time division, as and for the purpose
specified.

page_text: 12. A pressure recorder in which a continuous paper blank is driven from a
chronometer having an exposed dial, by means of a cog wheel or its equivalent
which engages in perforations in the paper blank, said recorder having also a
pressure gauge with an exposed dial and mechanism controlled by the gauge to
move a pencil or other device for marking the pressures on the moving blank,
substantially as described.
13. The improved pressure recorder constructed and operating substantially as
described with reference to the accompanying drawings.
Dated this 22nd day of February 1895.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.