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Патент USA US2093066

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Sept. 14, 1937.
2,093,066
W. AMES
GAUGE
Filed NOV. 22, 1933
79
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£22296,
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2,093,066U
Patented Sept. 14, 1937
UNITED STATES ¿PATE-NT OFFICE `
2,993,066>~
_
GAUGE
'
_
Warren Ames, Newton„Maìss.
1 ,
Application November _22, 19saseria1Nq. 699,148V '
19 Claims.
an interior annular groove 2| adapted to receive
the end portions of a plurality of retaining mem
etei` gauges.
bers 23 carried by the front plate. As shown,
the inner face of the’fro'ntfplate isformed withY
radially extending grooves 25 Vin which the retain
ing members 23 slidably lit.l Eachv retaining
`
`
5 ¿ provision of a gauge which will stand rough
usage, will be best understood from the followingr
description when read in the light of the accom
panying drawing, while the scope of the inven
tionwill be more particularly pointed out in the
radially extending slot 29l in the front plateV and.A
having its head 3i] at the inner side of the latter.'
Figure 1 isa rear elevation of a gauge, con
When the retaining 'rnen'lbe'rs> are clamped'in their>
’
structed according to the invention, with the
back plate removed;
i
Y'
'
with parts shown in elevation and with the back
plate in position;
`
Fig. 3 is a plan of the rear side of the front
plate with part of the mechanism carried by said
20 plate removed;
’
Fig. 4 is a section on the line 4_4 of Fig. 1
with parts omitted, the section line 4_4 also ap
pearing on Figs. 3 and 8 for convenience in coor
dinating the showing of these ñgures; _
_
Figs. 5 and 6 are sections on the lines 5_5 and
G_B'of Fig. l;
"
Fig. '7 is a perspective View of the contact‘feeler
actuated member;
"
`
. Fig. 8 is a bottom view of the‘rack supporting
or frame member carried by thefront plate,V a
top view or plan of which member is shown'byFig. l; and
`
4
I
l Fig. 9 is a plan of the leaf spring acting upon
the dial plate.
'
Referring to the drawing, the present embodi
ment of the invention includes a casing or sup
port having a ring-shaped casing member |, and
a back plate 3 removably secured to the casing
member | by a plurality of screws 5, the screw
40 nimes for which latter are indicated at 1 in Fig. 1.
At the front side ofA the casing is a front'plate-
il removably secured to the casing member I vby a
plurality of screws || which, as is apparent from
the drawing, are readily accessible'when the back
plate is removed.
Herein the gauge is provided with a bezel »ringï
I3 which carries the crystal |5. As shown, the
bezel ring is formed interiorly with a reduced
diameter portion I'l which ñts overthe casing
50 member |, the shoulder I9 `on the bezel ring,l
formed as a result of this reduced diameter por
tion, resting on the outer surface of the front
plate S.
f
_
'
,
positions'shown by Figs. 1’and5'of the draw
ing,`- the bezel will be rotatably securedV to the
Y
Fig. 2 is a section on the line 2_2 of Fig. 1
`
member is adapted to be clamped to the front'
plate by a set screw 2l tapped into the retain-ing member, .the set screw extending through a
_
10l appended claims.
In the drawingz-
4
-
My invention relates to gauges, and particu
larly but not exclusively to so-called d_ial microm
The invention, which has among its objects the
5
(Cl. 33_172)
"
` For rotatably and removably securing the bezel
‘i5 ring tothe front plate, the former is formed with
front plate. ' By loosening the' screws 21 the re-V 5
taining members may be slid `radially toward the
center of the front plate into their positions
shown by Fig. 3, so as to withdraw the retaining
members from the annular groove 2|, which will
permit the bezel ringto be removed from the
front plate.
j
`
`
'
` As shown„the- dial plate 3| of theV gauge is re
ceived in the reduced diameter portion 33 of the ;
bezel, ring with its edges abutting against the `
shoulder 35. The triangular shaped leaf spring 25
3l, inserted between the vdial plate and the front
plate, holdsthe dial plate frictionally in engage
ment'with the shoulder 35, so that when the bezel
ring is rotated relative to the front plate and cas
ing member | the dial plate will rotate with it. In 30
this way the >indicator hand or member39 may beV
adjusted relative to lthe'dial plate for initially
setting the indicator hand on the vzero mark of the
dial, as will be understood by those skilled in the
art.A
`
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’
.
,.
’
In the present form of gauge, the indicator'
hand 39 is mounted on a rotatable post 4| (Figs. 2
and 4) to which is ñxed acenter pinion >43 mesh
ing with a gear 45 ñxed to a spindle 41.Y The
spindle 4l at opposite ends is rotatably'supported
in bearings‘49 and 5| formed in the front plate 9
and in _a frame member 53 respectively. AsY
shown,> this Íramemember is carried by the front
plate,- and is secured thereto by screws 55.
The _frame member _53, as shown. is formed on 45
its upper side with a rectangular slot 5l in which
is reciprocally mounted a rack bar 59 having rack
teeth _El. vAs shown, the rack is retained in the
slotby a plate 63 having a pair of laterally pro
jecting portions 65 which rest against the `upper
side of the rack and hold it within the slot.~ yAs
illustrated, the plate 63 _issecuredfto' the frame
member 53 by >screws’liil,` and is formed at one end f
with a` projecting portion B'l'jto 'which' is. secured
one endV of a spring '65,-` the otherv end of» which 55
2
2,093,066
latter is attached at 1I to the rack so as to urge
the rack downwardly with the gauge in the posi
tion shown by Fig. 1.
Meshing with the teeth 6I of the rack is a rack
pinion 13 ñxedly secured to an internal sleeve 15
rotatably mounted on the spindle 41. Fixedly
secured to the lower end of the sleeve 15 is a radi
ally projecting arm 11 which cooperates with a
vertically extending pin 19 carried by the gear 45.
In the present embodiment of the invention the
front plate has rotatably mounted thereon a gear
BI which meshes with the center pinion 43, the
gear being urged to rotate by a hair spring 83 rin>
such direction as will rotate the gear 45, through
the center pinion 43, to cause the arm 11 nor
mally to Contact with the pin 19 carried .by the
gear 45. As shown, the hair spring is attached at
its inner end (Fig. 3) to the hub 84 of the gear 8|,
and at its outer end (Fig. 8) to the frarnemember
20 53 at 85.
As shown, the casing member I is provided with
a lateral screw threaded perforation 85, into
which is removably screw threaded an elongated
guide member 81. Reciprocally mounted in the
25 perforation of the guide member is a contact
feeler rod 89, which latter at its lower end carries
a member 9I, the lower end surface of which
contacts the work, thisk member having the shank
93 removably screw threaded'into the end of the
- . rod.
At its inner end, the rod 89 is shown as
formed with a head 95 provided with an extending
portion 91. As clearly illustrated in Fig. 2, the
outer end of the head 95, in the assembled gauge,
abuts with the end of the rack 59, with the flat
tened face 99 of the projecting portion 91 of the
head resting against that side of the rack which is
adjacent the back plate. This construction pre
vents rotation of the rod 89 in the bearing sleeve
81.
'
It will be observed the hereinbefore described
construction provides that the entire internal
gauge mechanism, and the dial and bezel, are
mounted solelyon the front plate >9, and that,
after the front plate with these parts assembled
» thereon is V_secured tothe casing„member I, the
bearing sleeve 81, carrying the rod 89 and’ asso
ciated'contact feeler 9|, may be screwed into the
perforation 86 to place the rod into operativerela
tion with the rack. This construction provides
against strains on the rod 89 beingcommunicated
to the rack, andeliminates the defects of gauges
as heretofore constructed in which the rod and
rack are made as an integral part mounted'for
reciprocation in the casing member I, with the
55 rack pinion mounted for rotation on the front
plate.
‘
Further, it has been found that dust and dirt,
which collect on the rod 89 when the gauge is in
use, have a tendency to Work into and cause wear
60 of the bearing in which it is reciprocally mounted,
resulting in a minute lateral loose play of the rod,
inwardly by the contact feeler rod 89. In other
words, when the contact feeler rod is pushed in~
wardly, the arm 11 tends to move away from the
pin 19, and the spring 83 tends to cause the pin to
follow the arm. This construction provides, that
if the gauge is dropped or clumsily or otherwise
handled, to cause the contact feeler rod 89 to be
violently driven inwardly, the blow imparted to
the rack will not be imparted to the train of 10
gearing beyond the rack pinion. It will be under
stood that the gauge herein illustrated is com
monly made much smaller than shown in the
drawing, with the result that the gear teeth are
very delicate, yet the train of gearing and parts 15
operated thereby have considerable inertia. With
gauges as heretofore constructed this violent in
ward movement of the contact feeler rod when
subjected to blows commonly strips or otherwise
damages the gears. This defect of gauges as 20
heretofore constructed is eliminated by the pres
ent invention.
It will be understood that wide deviations may
be made from the embodiment of the invention
herein illustrated without departing from the 25
spirit of the invention.
I claim:
,
1. A dial micrometer gauge having, in combina
tion, a casing having an opening and a removable
member closing said opening, a movable indicator 30
member and motion transmitting means for
moving it operatively carried solely by said re
movable member, said motion transmitting means
being wholly within said casing and being of such
dimensions relative to the dimensions of said 35
opening that when said member of said casing is
removed said means is removable through said
opening while attached to said member, and a
contact feeler actuated part cooperating with said
motion transmitting means forroperating it, said 40
part `being carried by said casing independently of
said removable member and being operatively
separable from said motion transmitting means.
2. A dial micrometer gauge having, in combi
nation, a casing having an opening and a remov
able member closing said opening, a movable
indicator member and motion transmitting
means for moving it operatively carried solely by
said removable member, said motion transmitting
means being wholly within said casing and being '
of vsuch dimensions relative to the dimensions of
said opening that when said member of said
casing is removed said means is removable
through said opening while attached to said
member, laicontact feeler actuated part opera
tively contacting with said rnotion transmitting
means for operating it, and spring means for
urging said part and means into contact, said part
being carried by said casing independently of
said removable member and being operatively '
separable from said motion transmitting means.
which causes a canting of the same when the
' 3.>> A dial micrometer gauge having, in combi
memb-er 9I carried thereby is pressed against the
nation, aY casing having an opening and a remov
work. With gauges as heretofore constructed, in
65 which the rod 89 has been made integral with the
rack, this canting causes improper meshing of the
rack with the rack. pinion, resultingin binding
and wear of the gear teeth, and inaccurate meas
,
by the rack pinion when the rack 59 is pushed
This defect isentirely elirnìnated by
the presentinvention.
urements.
able front` plate closing said opening, a movable
indicator member operatively carried by said '
front plate, multiplying motion transmitting
means comprising a reciprocatory member, which
means including said. reciprocatory member
thereof is wholly within said casing and is mount
ed solelyy on said front plate, said means being of "
It will also be observed that the hair spring 83
such dimensions relative to said opening that
so urges the gear 45 which carries the stop mem
ber formed by the pin 19 as to move said pin inv
when said front plate is removed said means is
removablethrough said opening while attached
_ the same direction as that in which the cooper
to'said front plate, and a contact feeler actuated
75 ating stop member formed by the arm 11 is moved
part movably'mounted on said casing independ
3
ently of said front plate for actuating said recip
rocatory member.
-
1
4. A dial micrometer gauge having, in combi
nation, a casing having an opening and a remov
able front plate closing said opening, a movable
indicator member operatively carried by said
front plate, multiplying motion transmitting
means comprising a reciprocatory member, which
means
including
said
reciprocatory - member
10 thereof is wholly Within said casing and is mount
ed solely on said front plate, said means being of
such dimensions relative to said `opening that
when said front plate is removed said means is
removable through said opening while attached
15 to said front plate, a contact feeler actuated part
movably mounted on said casing independently
of said front plate for actuating said reciprocatory
member, and spring means operatively'carried by
said front plate for urging said reciprocatory
ciprocally mounted upon said guide member for
moving said rack, said contact feeler actuated
part being removable with said guide member
While said rack is in said casing, and means oper
ative to prevent rotation of sai-d contact feeler
actuated part relative to said rack in the assem
bled gauge.
9. A dial micrometer gauge having, in combi
nation, a casing, a movable indicator operatively
carried by said casing, a reciprocatory member in
said casing for operating said indicator, said cas
ing havingfan opening, a contact feeler actuated
part extending through said opening into said
casing operatively into abutting relation with
said reciprocatory member, a-supporting mem
ber for said contact feeler actuated part remova
bly attached to said casing whereby said con
tact feeler actuated part may be removed while
said reciprocatory part is in'said casing, vsaid
contact feeler actuated part and one of said mem
20 member into contact with said contact feeler ac
tuated part.
-Y
5. A dial micrometer gauge having, in combi
bers operatively having cooperating means for
preventing rotation of said contact feeler actu.
nation, a casing having an opening and a remov
able front plate closing said opening, a movable
ated part.
'
,.
10. A dial micrometer gauge having, in combi
25 indicator member operatively carried by said
nation, a casing including a removable front plate,
front plate, multiplying motion transmitting
Van indicator member and a» motion transmitting
means comprising a reciprocatory member, which
means including said reciprocatory member
thereof is wholly within said casing and is mount
30 ed solely on said front plate, said means being of
such dimensions relative to said opening that
when said front plate is removed said means is
removable through said opening while attached> to
said front plate, a bezel rotatably mounted on said
35 'front plate and removable therewith, and means
readily accessible from the side of said casing opi
train for actuating the latter carried solely by
and removable with said front plate, said train
being positioned interiorly of said casing and in
cluding a reciprocatory member, said casing hav
tact feeler actuated part reciprocally mounted in
the perforation of said `guide member and being
posite said front plate for 'removably securing the
removable with the latter and operatively con
latter to said casing.
tacting with said reciprocatory member of said
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Y
6. A dial micrometer gauge having, in com
40 bination, a, supporting memb-er formed to provide
a casing, a removable front plate for the latter,
an indicator member and a train of gearing for
actuating the same carried by and removable with
said front plate, said train being positioned Within
45 said casing and including a reciprocatory rack,
said supporting member being also formed to pro
vide a removable guide member having a perfo
ration opening into the interior of `said casing, a
contact feeler actuated part reciprocally `mount
50 ed in said perforation in abutting laterally dis
placeable relation with said rack,` and spring
means for urging said rack into abutting contact
with said contact feeler actuated part. Y
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7. A dial micrometer gauge having, in combi
55 nation, a casing having a perforated wall, an in
dicator member operatively carried by said casing,
a motion transmitting train including a recipro
catory member in said casing operatively carried
thereby, a guide> member removably carried by
60 said casing co-aXially with the perforation there
of, and a contact feeler actuated part separate
from said*- reciprocatory member recîprocally
mounted upon said guide member for moving said
reciprocatory member, said contact feeler actu
G ated part being removable with said guide mem
ber While said reciprocatory member is in said cas
train.
'
ll. A dial micrometer gauge having, in com 40
bination, a casing including a removable front
plate, an indicator member and a motion trans
mitting train for actuating the latter carrie-d sole
ly by and removable with said front plate, said
train’being positioned interiorly of said casing, ‘
and including a reciprocatory member, said 'cas
ing having a member other than saidfront plate
formed with a perforation, a' perforated 'guide
member removably carried by said member of
said casing coaXially with the perforation thereof, : ,50
a contact feeler actuated part reciprocally mount
ed in the perforation'of said guide member and
being removable with the latter and operatively
contacting with said reciprocatory member, vand
means for preventing rotation of said contact :1 5,5
feeler actuated part relative to said guide member.
12. A dial micrometer gauge having, in com
bination, a casing, a movable indicator member
'operatively carried by said casing, means within
said casing presenting a pair of movable cooper- „1 co
ating stops, contact feeler actuated means for po
sitioning one of said stops in accordance- with the
positionY of said contact feeler actuated means
relative to said casing operative to move said stop
in a direction which is away from the other stop 65
upon decrease in the distance between said cas
ing.
ing and the work surface with which the contact
8. A dial micrometer gauge having, in combi
nation, a casing having a perforated wall, an in
feeler contacts, motion transmitting means con
dicator member operatively carried by said cas
ing, a train of gearing including a reciprocatory
rack in said casing operatively carried thereby, a
necting said other stop to said indicator member,
and spring means for yieldingly urging said other
guide member removably carried by said casing
stop toward theñrst mentioned stop.
'
13. A dial micrometer gauge having, in combi
nation, a casing, a movable indicator member op
coaxially with the perforation thereof, a contact
eratively carried by said casing, means Within said
75 ieeler actuated part separate from said rack re
30
ing a member other than said frontplate formed
with a perforation, a perforated guide member
removably carried by said member of said casing
coaXially With the perforation thereof, and a con
casing presenting a pair of movable cooperating 75
4
2,093,066
stops, contact ieeler actuated means for posi
tioning one of said stops in accordance with the
position of said Contact feeler actuated means rel
ative to said casing operative to move said stop
in a direction which is away from the other stop
upon decrease in the distance between said casing
and the work surface with which the contact
feeler contacts, motion transmitting means con
necting said other stop to said indicator member,
10 spring means for yieldingly urging said other stop
toward the iirst mentioned stop, and spring means
acting yieldingly to urge the ñrst mentioned stop
toward the other stop under a greater force than
that exerted by the ñrst mentioned spring means
on sai-d other stop.
.
14. A dial micrometer gauge having, in com
bination, a casing, a reciprocatory contact feeler
actuated part projecting from said casing, a mov
able indicator member operatively carried by
said casing, means within said casing comprising
a pair of cooperating stop members, means for
positioning one of said stop members in accord
ance with the position of said contact feeler ac
moved by said contact feeler means the stop
movable with said rack pinion tends to move away
from the other stop.
17. A dial micrometer gauge having, in com
bination, a casing member, a removablevfront
plate for said casing member, a bezel and dial
plate operatively rotatably mounted upon and
removable with said front plate, an indicator
hand cooperating with said dial plate also op
eratively mounted upon and removable with said
front plate, a contact feeler actuated part oper- '
atively mounted solely upon said casing member,
a reciprocatory rack member and a train of gear
ing operatively mounted solely upon and remov
able with said front plate for transmitting mo
tion of said contact feeler actuated part to said
indicator hand, and an operative connection be
tween said rack member and said contact feeler
.15
actuated part permitting lateral displacement
of one relative to the other, whereby said front
plate and the enumerated mechanism mounted ‘
thereon may be assembled as a unit independently
of said casing member.
tuated part relative to said casing operative to
18. A dial micrometer gauge having, in com
move said stop member in a direction which is
away from the other stop member upon inward
bination, a casing member, a removable front ,_
movement of said part relative to said casing,
a train of gearing connecting said other stop
member to said indicator member, and spring
means operating on said gearing for yieldingly
urging the last mentioned stop member toward
the ñrst mentioned stop member.
15. A dial micrometer gauge having, in combi
nation, a rack, a pinion meshing with said rack,
an indicator member, gearing connecte-d to said
member for moving it, cooperating stop members
associated with and moved by said pinion and
gearing respectively, a contact .feeler for moving
said rack in one direction and spring means for
40 moving it in the opposite direction, said stop
members being so arranged that when said rack
is moved by said contact feeler it tends to move
the stop associated with said pinion away from
the other st-o-p, and spring means associated with
45 said gearing for causing said gearing to urge its
associated stop into contact with the stop asso
ciated with said pinion.
16. A dial micrometer gauge having, in combi
nation, a support; a reciprocatory rack, contact
50 feeler means for moving said rack in one direc
tion, an indicator member, and gearing connect
ing said rack and indicator member, all carried
by said support; said gearing comprising a rack
pinion meshing with said rack and a gear coax
ial with said pinion but mounted for rotation in
dependently thereof, which gear is operatively
connected to said indicator member for moving
it; spring means acting on said gearing operative
-to cause said gear to rotate in the same direction
60 as said rack pinion when said `rack is moved by
said contact feeler means, and means forming a
pair of cooperating stops one movable with said
rack pinion and the other with said gear, said
stops being so arranged that when said rack is
plate for said casing member, a bezel and dial
plate operatively rotatably mounted upon and re
movable with said front plate, an indicator hand
cooperating with said dial plate also operatively
mounted upon and removable with said front 1
plate, a contact feeler actuated part, a removable
bearing sleeve mounted solely upon said casing
member, a contact feeler actuated part carried
by and removable with said sleeve, a reciproca
tory rack member and a train of gearing opera- „
tively mounted solely upon and removable with
said front plate for transmitting motion of said
contact feeler actuated part to said indicator
hand, and an operative connection between said
rack member and sai-d contact feeler actuated part
permitting lateral displacement of> one relative to
the other, whereby said front plate and the
enumerated mechanism mounted thereon may be
assembled as a unit independently of said casing
member.
19. A dial micrometer gauge having, in com
bination, a casing having a removable front plate,
a bezel and a dial plate and cooperating indica
tor hand operatively mounted upon and remov
able with said front plate, a contact feeler ac-,UI
tuated part mounted solely upon a member of
said casing other than said front plate, a recipro
catory member and cooperating motion transmit
ting means operatively mounted upon and remov
able with said front plate for transmitting motion 55
of said contact feeler actuated part to said in
dicator hand, said reciprocatory member and con
tact feeler actuated part being so constructed as
to abut with each other in the assembled device
vto permit removal of said front plate with the 60
enumerated parts mounted thereon, and spring
means for urging said reciprocatory member into
contact with said contact feeler actuated part.
WARREN AMES.
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