close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2268808

код для вставки
Jan. s, -1942.
J. o. DAVIS ,
REooRDINe'DEvIcE
Filed Deo. 6, 1939
2,268,808
2,268,808
Patented Jan. 6, i942
PA
ST
oFFic
2,268,808
RECORDING DEVICE
Jack Ostins Davis, Portland,'England, assigner to
Henry Hughes & Son, Limited, London, Eng
land, a corporation of Great Britain
Application December 6, 1939, Serial No. 307,898
8 claims. (C1. 177-386)
I This invention relatesto recording apparatus
"and particularly to recorders used as part of
apparatus for depth measurement by the echo
reception method in which `the interval between
the transmission of a- signal and the reception
of its echo is used to give a measure of the depth
from which the echo is received. The present
invention is particularly concerned with re
corders having a marking stylus which is made
to travel round continuously in a circular path,
a part of which crosses a record strip on which
the stylus is caused to mark the instant of re
ception of the echo so that the distance of the
mark from the zero point of a scale associated
with the record strip is a measure of the re
it is usually convenient for the zero correction
_ to be incorporated with the phasing adjustments
and, accordingly, a further object of the inven
tion is to provide means whereby any required
zero correction is applied to aflocating pawl used
to determine the settings of the phasing control.
Further objects and constructional details of
an embodiment of the `invention will be apparent -
from the accompanying drawing which illus
trates one construction lof zero correcting ar
rangement and a rotary stylus type of recorder
with which the linvention is incorporated.
In the drawing:
'
Fig. 1 is a diagrammatic perspective view of af
construction of recorder incorporating th-e zero
correcting device;
_
corded depth. The mechanism for rotating the
Fig. 2 is a front velevation to a larger scale
stylus also provides for the actuation of contacts
of the zero correcting device;`
I
to control the transmission of the signal at the
Fig. 3 is a side View of the parts shown in
appropriate instant and provision is also made
2; and
for driving the stylus round at dilîerent pre 20 Fig.
Fig. 4 is an end View partly in section and
determined constant speeds'to correspond with
partly broken away of the switches and the
different scales of depth measurement.
switch-actuating cams.
Allowance may have to be made, when setting
The invention will be described in connection
up the apparatus, for suitable corrections 'to be
with a rotary stylus type of recorder having pro
25
appliedl when changes in the stylus speed are
visiorrfor changing the stylus speed to corre
made to ensure that the zero point of the scale
spond with different depth scales uand with
of depth measurements is kept the same despite ‘ phasing means as above described. `
such speed changes, since any time lag in the
Referring ñrst to Fig. l.this shows diagram
apparatus _and any allowance for the draft of 30 matically the parts of the recorder construction
a vessel into which the apparatus may be fitted
essential to an understanding of the invention
is represented by a different fraction of the total
and the recorder illustrated 'includes a driving
scale for the different scales used.
~
motor I governed to „run at constant speed and
One object of the present invention is to pro
vide means whereby any necessary zero correc
driving through worm gearing 2, a shaft 3 hav
tion can be applied automatically when the speed
of the stylus -is changed- and a further object
_is to provide means whereby the extent of the
correction can be set precisely to any predeter
from the shaft 3 by means of an arm 6 secured
mined amountfor each ofthe ,different stylus
speeds.
‘
,
It is usually convenient, in the case of echo
ing thereon a‘pair of slidable gears li, 5, driven
thereon and provided with a pin 'i projecting
through the gear t. The gears d, 5 are movable ,
along the shaft 3 by means of an arm B which
can be swung by turning movement of an oper
ating knob 9. The gears 4 and 5 are fixed to a
sleeve Il which slides on the shaft 3._ The sleeve
sounding apparatus, to provide a phasing ar
has a disk IIa on its end which defines, with
rangement, that is to say, provision for actu
the face of the gear 5, algroove for receiving the
ation of the contacts controlling the transmis
- roller I0 o_n the end of thefarm 8. Rocking move
sion of the sound signal, and the consequent
ment of the arm 8 moves these gears so that the
transmission of the signal, in 'advance of the
drive from shaft 3 is either through gear 4 and
instant at which the stylus coincides with thev ' a smaller gear I2 or through gear 5 and a larger
zero point of the depth measurement scale. The I
gear I3. The gears I2, ‘I3 are secured on shaft
transmission of the'signal is advanced in steps 50 I4 and form with gears 4, 5 a change speed gear
corresponding with convenient known distances
ing as.is well known. Theyd'rive transmitted
and the resulting effect is to enable the same
through the change speed gearing rotates the
scale of depth to be used for different ranges
shaft I4 which carries on its forward end adisc`
of depth measurements by allowing for the ex
with a projecting stylus I5 which thus movestent by which the signal transmission is ad
round in a circular path and crosses a recording
van‘ced. When such phasing means are provided 55
2
~ 2,268,808
strip i3 during part of »its travel. The» record
,stripr IE5 isunwound from-a roll (not shown)
i
f and ' is moved ¿downwards 'over' the; ¿supporting
surface il. The change speed gearing> enables
, the stylus yspeed to be changed from one constant f
' speed tor another constant' rspeed 'in accordance
with different scales ofi measurement.V »
The transmission of asignal, `when' the re
corder is usedasp'arït of echo sounding apparatus f
1
controlled by the adjustment ofy the up'1:>er'scï:rewedy ¿ '
f . stop 33 and the position in which the associated
f pin 32 is secured in the- holes in thecarrier arm.
When ar change in stylus rspeed'is made byr
turning the knob 9 the pinï43 moves across the
, openingAZ in the carrier 4U which is swung about
its pivot 4| tor move the; spring fstrip¿33 yfromy
contact with the upper pin 32 into engagement
with the lower pin 32- and the carrier arm 26 is
ï yis controlled by contacts I8 engaged by cams I8 10 thereby moved runtil the 'lower' pin '3,2' engages
on the tubular shaft I4 which carries the stylus.
the lower kscrewed stop 33. The arm 26 carries
yThe ¿contacts iß'are'mounted iny a yframe Isay
the
pawl y26 Awith it in its movement yand the pawl
which is fixed to a spindle 20> and can be moved ' therefore rotatesy ther ïphasing disc' r22 rslightly f
' round relatively-to the stylus shaft I4 to adjust
through a predetermined angle »to compensate
the making; and breaking; of they contacts rela 16 automatically for 'any change in the zero posi
tive to the position of thestylus I5. The spindle
tion resulting from a change ¿inthe speed ofthe
23 projects through the tubular shaft I4 and
carries the contacts yI8¿ atitsr rear end. The
The new- position of the pawl 24 can be con»
stylus.
"
~
^
spindle. 29 is rotatable by an external knob 2|.y Y f trolled' precisely b'y'adju'strnent 'of the lower
The rotation of the knob 2i thus enables phasing
yadjustmerrts to'be made. that is to say the trans
mission of a signal before. ther stylus starts to
screwed stop 33 `and the positionk of the lowery pin
32 in/ the holes 3| in the head of rthe carrier arm
cross the record stripsor as rto allow forvthe re
the diiferent angular positions of the phasing dial
cording f ofv greaterv depths than ycould ordinarily '
be recorded during they time whilst the stylus is
-
-
ymoving across the
f ; The spindley has
indicating plate or
' 23m its periphery
and the pawlcontinues rtoact asa locaterr for f
22 so that each phasing adjustment has a zero
correction automaticallyy applied toit. f
The phasing dial 22 is provided with suitable
record strip I3.
Secured on ,itsy front end an
> indications as at -45 yto showy the particular range
dial 22> provided with notches v '
' o! 'depth measurement in ¿use at any time.r The
which are engaged by a pawl
appropriate indication 45 is» visible through a
f ¿24 rto rlocate the spindle 20’andcontacts I8 inthe 80 iwindowjor opening in they casing of the appa
proper angular positions 'to provide suitable phas-i '
'
ing adjustments.
s
f
The dial and pawl andritsfassociated mecha- »
ratus (not shown) 'and' ythe indications conse
quently change as the dial 22e is stepped round.
What I' claim as my invention rand desire yto
nism are shown to a larger scale in Figs. Zand 3 ~
'secure by Letters Patent is:
and it will .be seen that the paw1`24 is pivoted by> r85
1; In an» echo-sounding i recorder, ar stylus,
a screw 25 to an elongatedy carrier plate 26 which
means- providingy a recordingzsurface. a drive
is freely pivoted co-axially with ther dial r22 and ` operable
to etl’ectrelativer vcyclic movement be
the spindle 20 and shaft I4. The pawl is pressed
tween said' stylus >and said surface, signalling
towards the: peripheryfofy the dial- 22 by a' suit
able spring 21 fixed stone 'end by a screw 28 ¿in ’ rvmeans including an actuatable element, yactuat
ying meansr operated by said drive io actuate said
ythe plate26 and anchored at its other end ina
element in timed relation with respect to a pre
rnotch' 2S at the back of the pawl.' The ifree'end »
determined'point iny said cyclic movement, means
of the carrier plate 26 is formed with an arcuate
operable to rchange said drive from one constant
head 30 provided with a plurality of sockets V3|
speed
to another constant speed, and means oper
located on a circular arc' struck from the pivotal 45
atively associated with said last named means to
axis of the plate 23 and these sockets 3| are
effect a time correction relative to said predeter
adapted to receive a pair of pins 32 which limit
mined point in the operating relation between
the swinging movement of the carrier plate by
said element and said actuating means when a
strikingragainst adjustable stopslconsisting of
change is made in the constant rate of speed of
screws 33 screwing through sockets 34 at the 50 said
drive.
ends of a ilxed block 35 secured to some ilxed part
2. In an echo-sounding recorder, a stylus,
of the recorder as-shown in Fig. l. 'I'he screws 33
means providing a recording surface, a drive op
are provided with lock nuts 36. -.The pins 32
erable to effect relative cyclic movement be
‘are provided lwith enlarged heads 31 which en
gage the screwed stops 33 and the pins have 55 tweenv said stylus and said surface, signalling
means including an actuatable element, actu
screwY threads 33 (Fig. 3), beneath their heads by
ating
means operat
bysaid drive to actuate
which they are screwed into the socket holes 3|.
said element in tim' d relation with respect to a
The reduced portions of the pins 32 are long
predetermined point in?said cyclic movement.
enough to extend through the head 30 of the
means operable to change said drive from one
carrier arm and project at the back thereof as
constant speed to another constant speed. means
shown in Fig. 3.- The rearwardly projecting por- .
including a depth rangev indicator manually mov
tions of the pins 32 can be engaged by a spring
strip 39 mounted at one end in a carrier 40 cap
able of swinging movement about a fixed pivot
4|. The carrier has a. hole 42 therethrough
Vshaped-as shown and into which projects a pin
43 on a disc/44 integral with the knob 9 for
operating the change speed `gear. In the posi
able to determine the timed relation between the
actuation of said element and said predeter
mined point, and means operatively associated
with said operable means to move said manually
movable means to make a. time correction in the
actuation oi' said element relative to said pre
determined point when a change isfmade in the
tion shown the spring strip 33 bears at its free
speed of said drive.
end against the upper-most pin 32 and holds the 70
3..In an vecho-sounding recorder. a stylus,
latter against the _upper screwed stop 33 so that i
the phasing- adjustments are made by step by
step movement of the dial 22 to bring the succes
means providing a recording surface, ‘a drive op
erable to effect relative cyclic movement between
sive notches 23 into engagement with the locating
' sa'id stylus and said surface, signalling means
pawl 24. The position of the pawl 24 is of course
means operated by said drive to actuate said
including an actuatable element, actuating
2,268,808
element in timed relation Witl’rrespect-to a pre- .
determined point in said cyclic movement, means
operable to change said drive from one constant
speed to another constant speed, means manual
3
predetermined cycle, an actuatable element,
means to manually adjust said element circum
ferentially about said drive shaft, means carried
by said drive shaft to actuate said element,
ly movable to advance or retard relative t0 said Cn means operable to change the movement of said
drive shaft fromone constant speed to another
predetermined point the operating relation be
constant speed, and means operatively associat
tween said element and said actuating means,
ing said operable means with said manually ad
means to `releasably hold said manually movable
justable means to effect adjustment of said ele
means in a'selected position, and means opera
tively associating said operable means with said lO ment circumferentially of said drive shaft when
a change is made in the constant speed of said
releasable holding means to effect a time correc
drive shaft.
'
tion relative to said predetermined point in the
operating relation between said element and said
»
actuating means when a change is made in the
constant rate of speed of said drive.
4. In an echo-sounding recorder, a stylus op
erable for movement through a predetermined
cycle, a drive for the stylus, signalling means in
cluding an actuatable element, actuating means
drive shaft operable to move the stylus through
operated by said drive to actuate said element at
a predetermined point in the cyclic movement of
said stylus, means operable to change the drive
to said stylus from one constant speed to an
other constant speed, and means operatively as
sociated with said operable means to eiîect a
time correction relative to said predetermined
point in the operating relation between said ele
ment and said actuating means when a change
is made in the constant rate of speed of -"said
drive.
`
7. In an echo-sounding recorder, a stylus, a
a predetermined cycle, an actuatable element, a
dial having means to indicate the depth range
for which the recorder is‘operating, a second
shaft to support said element and said dial,
means carried by said drive shaft to`actuate said
element, means operable to change the move
ment of said drive shaft from one constant speed
to `another constant speed, and means operatively
associating said operable means with said second
shaft to eilîect an angular adjustment of said
element about said drive shaft and a correspond
ing movement of said dial when a change is
made in the constant speed of said drive shaft. ‘
8. In an echo-sounding recorder, a stylus, a
Vdrive shaft operable to move the stylus through“
30 a predetermined cycle, an actuatable element, a
dial having means to indicate the depth range
for which the recorder is operating, a second
shaft to support said element and said dial,
means carried by said drive shaft to actuate said
element, means operable to change the move~
ment of said drive shaft from one constant speed
to another constant speed, said dial having a
series of notches, means pivoted for movement
about the axis of said second shaft, a paivl ad
constant speed to another constant speed, and
means operatively associated with said operable 40 justably supported on said pivoted means adapt-Y
ed to engage said notches, and said pivoted
means to move said element relative to said shaft
means being operatively associated with said op
to make a time correction with respect to said
erable means to effect an angular adjustment of
A predetermined point in the actuation of said‘ele-`
, said element about said drive shaft and a corre
ment when a change is made in the constant rate
of speed of said shaft.
tu al sponding movement of said dial when a change is
made in the constant speed of said drive shaft.
6. ln an echo-sounding recorder, a stylus, a
JACK @Sms DAMS.
drive shaft operable to move the stylus through a
5. ln an echo-soundingbrecorder, a stylus, a
drive shaft operable to move the stylus through
a predetermined cycle, signalling means includ
ing an actuatable element disposed adjacent said
shaft, means carried by said shaft to actuate said
element at a predetermined point in the cyclic
movement of said stylus, means operable to
-change the movement of said shaft from one
Документ
Категория
Без категории
Просмотров
0
Размер файла
564 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа