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Патент USA US2121614

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June 21, 1938.
Filed Feb. 4, 1936
i Patented June v21, 1938
John son-k, Chester, rs, magnol- to Sun on
Company, Philadelphia, Pa_., a corporation of
New Jersey
Application Fehmry d, i936, Serial No. 82,256
3 Chums. (Cl. 33-1'73)
This invention relates to a recording gauge for ‘
A recording arm holder in the form of a collar
i2 is welded to tube i between the collars do and
gauging end recordingv the maximum and mini
till, end recording arms it are fastened to radially
mum internal diameters-of cylinders or tubes;
extending lugs 03 on collar it by pins it. There
The gauge embodied in this inyention is espe
5 ciclly s'dspted for gauging the maximum end are preferably three recording srms it spaced 5
minimum internal diameters of the tubes and‘ eeuidistantly around tube 6. A wheel or sliding
pipes used in and around tubular oil stills end ' shoe it is isstened to each recording arm it by
the like. Alter the coke has been cleaned from pin ii’. A spring it, fastened to tube 5 or collar
such stills, it is important that the tubes in the i3, presses each recording arm it‘, outwardly with
its tell its. normally resting against tube i. A 10
in still and the trsnsier pipes be gauged for merri
mum and minimum internal diameters.
tofore the gauges used for such gauging have
generally been equipped with long handles by
means of which the gauge could he pushed or
.lt pulled through the tube being gauged. ‘With such
pencil lead or other suitable stylus iii is held in
the outer end of an arm 2'? pivoted at ii to each
recording arm it and may be adjusted radially
by means of. set screw it.
A collar 26 is slidabiy mounted on tube i be- 15
tween the outer end of recording arm it and col
lar 8b. Collar 21 is fixedly fastened to wire loop
operated by rods or other connections from the 22 which ‘passes through guide holes in collars 8c
gauge. With the long tubes now used in such and 8b and recording arm holder it. A disk 23
29 stills the handle of the gauge must necessarily be is rotatably'mounted on collar 2!, being held 20
thereon by a split ring 24. A series of equally
very long, thus not only making the gauge un
wieldy, but also seriously impairing its accuracy. , spaced ratchet teeth M are machined on the
It is therefore an object of this invention to collar 2|. Ratchet pawl 25 on disk 23, pressed by
provide an internal cylinder or tube gauge which spring 26, engages ratchet teeth ti on collar 2i
25 may be wholly inserted in the cylinder or tube'to and prevents rotation of disk 23. A disk of paper 25
be gauged and with which a- continuous record 28 maybeinsertedinaninsetindisktlandbe
irom end to end of the tube of maximum and held in place by said split ring.
‘The disk 28 is pushed back until it is not in
minimum internal diameters may be made, di=~ ‘
rectly on the gauge without the necessity of long contact with pencil point is. Ratchet pawl 25
30 connections from the gauge to the ‘end of the is then pulled back and the disk 23 is rotated 30
tube, except for a cord used to draw the gauge until unmarked portions of paper 21 are opposite
the recording arms it, ratchet pawl 25 is then
through the tube.
Referring now to the drawing which forms it released locking disk to in place. A wire or
other means for pulling the gauge through the .
part of this speci?cation, and in which like num
tube is then passed through the tube A and 35
' 35 hers refer to like parts throughout:
Fig. lie s. iongitudinal'section of the preferred fastened to the wire loop 22. The entire gauge
is then inserted in the tube A, cure being taken
form of this invention,
Fig. 2 is e section taken on the line 2-2 of Fig. not to pull the wire loop 22 and thus pull dish 2%
against the pencil point it. ‘When the gauge has
1, end
40 his. 3 is c. section taken on the line t-3 of been inserted in the tube is, the centralizing arms 40
gauges the reading or record was’ taken from
some device at the end of the handle which was
Fig. 1.
being pushed outwardly by spring 3, "will center
in the drawing, the body of the gauge consists the gauze or tube i in tube A, the wheels @ on
of s tube 8, within which two sleeves lid and lb centrslimng srms iii bearing against the wells of
ere siidobly mounted. These sleeves to and it the tube A. The recording- erms it are pressed
4 ere pressed outwardly, by s spring 23, against the outwardly by springs it and wheels it on srms e5
centrulimng erms d which extend through open ' it bear against the wells of tube A. _ The gauge
ings in the tube 6. These centre-lining arm are in is then pulled through the tube being gauged by
the form of is hell crank, end are fastened by pins the wire attached to wire loop 32. Pulling wire
t to redisiiy extending lugs i on'collsrs to end loop 22 draws the collar 25 along the tube i until
disk 23 is in cbntsct with pencil points it. its so
5n so welded to ‘time i. Preferably thee such cen
trelising arms 5, spaced equidistsntly about tube the gauge is‘ drawn through the tube A, the
i ere stteched to eeeh of the callers its and. so. wheels it on recording srms it follow the con
The outer ere: of each of the centralizing srms tour of the wells of the tube, so that may veri
t is i'orhed suds wheel or sliding shoe t is ice-a stions in the internal diameter of the tube is
- recorded ,on the vpeper
it by the pencil s5
55 tened thereto by Pin .5@.7
longitudinally through the cylinder whereby, dur
points l9. Before the gauge is withdrawn from
the tube, the wire loop 22 should be pushed back,
thus moving disk 23 away from pencil point IS.
ing said movement of the gauge, said recording
surface records radial movements of said record
The gauge is then withdrawn from the tube A
and the maximum and minimum internal diam
Ratchet pawl 25 may then be drawn
back and the disk 28 rotated one notch, thus
bringing a clean part of paper disk 28 opposite
the pencil point IS. The gauge may then be
of wheels movable longitudinally along the inner
wall of the cylinder ‘being gauged, a recording 10
used ‘to gauge another tube in the manner de
scribed above.
minimum internal diameters of cylinders, which,
comprises a gauge body, gauge-centering means
‘ carried by the gauge body comprising two series
eter of the tube A may then be read on paper
disk 28.
2. A gauge for measuring the maximum and
While I have herein shown and described a
preferred embodiment of my invention, it is ap
15 parent that. various changes and modi?cations
may be made therein without departing from the
spirit of my invention or the scope of the ap-
device, positioned between said centering means,
which is movable longitudinally with the gauge
body and which comprises cooperating devices
one of which is adapted in such longitudinal
movement to follow the contour of the cylinder
wall and the other of which has a limited lon
gitudinal movement relative to the gauge body to
pended claims.
enable it to be brought into operating relation
Having now described my invention, what I‘ with the ?rst named device.
20 claim and desire to protect by Letters Patent is:
3. A gauge for measuring the maximum and 20
1. A gauge for measuring the maximum and
minimum internal diameters'of cylinders which
comprises an elongated gauge body adapted to be
wholly inserted within the cylinder to be gauged
25 and movable longitudinally therein, centering
arms pivoted on said gauge body near each end
thereof, and having their outer ends free to move
in a radial direction therefrom, means for apply-
lng uniform outward pressure to said centering
30 arms, recording arms pivoted on said gauge body
and having their outer ends free to move in a radi
a1 direction therefrom, means for applying out
ward pressure to said recording arms, a recording‘
surface carried by said gauge body and movable
35 longitudinally therealong, means for drawing
said gauge body through the cylinder to be
gauged, said last named means being operable
to ?rst move said recording surface longitudi
nally along said gauge body into contact with
40 said recording arms and then to move the gauge
minimum internal diameters of cylinders which
comprises a gauge body, centering means carried
thereby and adapted to engage the internal wall
of thescylinder and to be rolled‘ longitudinally
therealong, a recording device, carried by the 25
‘gauge body, comprising cooperating devices, mov
able longitudinally with the gauge body, one of
which comprises a radially movable element
adapted in its longitudinal movement to follow
the contour of the cylinder wall and a marker 30
movable radially with said element and the
other of which is an annular disc having a re
cording surface and being longitudinally mov
able relative to the gauge body into operative re
lation with the marker, and manually operative 35
means which is operable to ?rst impart to said
disc the relative longitudinal movement speci?ed
and to then longitudinally move the gauge and
both of said cooperating devices in unison.
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