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Патент USA US2405346

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Aug» 55946‘!
AQM. DRAKE
WORKHOLDER FOR GAUGE LAPPING MACHINES
Filed July 20, 1942
2,405,346 '
Patented Aug. 6, 1946
2,405,346
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"Alden M; Drake, West'Hartford5,'»Gonn., assignorto'
‘ Niles-Beinentil’ondiCompany, WestE Hartford,.
' ‘Conn, a corporation of’ New.- Jerseyv
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Annlication Julr 20. 1942... sensing. estate: '
4 Claims. (Cl; 51'—2'17)
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This invention relates. to; gauge. holders. and‘
particularly: to a holder for a, tapered. screw
threadgauge whilebeinglapped. .
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First; a body member-having- an arm preferably
formed integrally thereon, and extending »radi-,.
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ally therefrom‘; second, a rotatable, member hav
ingportions housed within} the body member. and
An objectof the. invention. is to provide a suit-.
able. holder for a gauge of the above referred to 5 adapted: to vbe angularly adjustable about the
type While being lapped‘jenabling the angular‘po
‘ central axis’ot the holder; third, gauge clamping
sition of the gauge relative, to the vbody portion
means provided on the rotatable member. en
of the holder to bereadily adjusted‘.
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ablingja’ gauge to be’ clamped thereto with its
More particularly the. holder. is. designed for
solid; screw, thread gauges haying internal tapered
threads, means being provided so that the rota:
tive. position. of the gauge within the holder may
be. vmarmall-y adjustable during the lapping opera
axis alihedf with the
of rotation of the rotat
able member; 'pfour'th; frictional retaining means
for the rotatable~~ member housed within the
body member; fifth; ‘a gear mounted on, and r0
tatabl‘e wtih the gauge'clamping member; and
sixth; a; pihien" supported Within the body
Another object of. the invention'is to. provide 15 member'and engagingithe gear so that the 'pin;
simplev manually operated means. for angularly
ion. merits-manually actuated to vary‘ the aneu
varying theposition of the, gauge within the hold‘
lar posit n. of‘: the rotatable member relative to 1
er,‘ and. to. provide frictional. means to retain the
the-legdy'meinber an iii? em.
ation.
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gauge. in: its. successive angularly adjusted posi
tions;
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R ferrihg more) in’ detail- to the ?gures of the
20 dra ‘ "g"; I provide a gauge holder generally sim
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With. the, above. and other objects in view the
invention ‘may. include the features of construc
tion
operation set forth in the following spec
ilar. in form to that‘ SIIQWIF in' my ratenftfor e“
i?cation and. illustrated. in- the accompanying
drawing-
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In . the: accompanying drawingfannexed hereto
pered screw thread gauges, which comprised a
and forming. a part, of. this. speci?cation, I. have
shown the inventionin a. holder fol.‘ @taper screw»
threadgauge of the solid ring type, butfit'w-illbe
Screw thread lapping machine No. ‘2,335,745;
granted’ November 30,191.13. {The present gauge
holder ‘is, sii'fnilar'to that vdisclosed ‘in my earlier
application designed. particularly for holding ta
body member l0 having an arm I |_ outstanding
therefrom by vmeans of which the‘ entire holder
could‘ be oscillated. . A ear-es W was clamped
understood‘: that the. invention can be otherwise 30 within. a portion ofthe holder, but no means were
embodied ‘and that the drawing is not to be. con
strued asde?ning. or limiting the scopaor the
invention, thev claims. appended; to this speci?ca
tion being relied upon for that purpose.
.Inthedrawing:
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Figure llis a irent elevation of: a. sausehelder
made in accordance with the present invention,
parts being brokenaway substantially on the line
provid'ed‘for conveniently advancing the gauge
along the. lap. during the lapping operation and
as the screw threads, increased in diameter. The
present form of holder provides. means for vary
35 ins thev angular position of the gauge. W during
the progress of the lapping operation relative to
the body member, I t o‘flth'e holder and-its radial
arm lil‘kb'yi means oflwhich the. gauge‘ maybe
l—l of Fig. 2 to more clearly show the interior
graduallyuadvanced along the threaded lap to
construction.
portions of increased diameter. _ As shown in the
Fig. 2 is a transverse central sectional view of
?gures of the drawing the body member H) may
the holder and gauge shown in Fig. 1, and
comprise two members maintained in spaced re
Fig. @3 is a fragmentary view of the frictional
lation to each other by suitable rivets 9.
retaining means employed in the gauge holder,
Housed within a cylindrical recess in the body
parts being broken away to more clearly show 45 member I0 is a rotatable member [2. This ro
their construction.
tatable member l2 has a portion l3 formed in
In the above-mentioned drawing there has been
tegrally therewith or welded thereto for receiv
ing and clamping the gauge being lapped. As
shown but one embodiment of the invention which
is now deemed preferable, but it is to be un
shown most clearly in Fig. 2, the gauge clamping
derstood that changes and modi?cations may be
portion of this rotatable member l2 comprises two
made within the scope of the appended claims
semi-circular portions M which may be drawn
without departing from the spirit of the inven
together by means of a suitable screw t5 to ?rm
ly engage the periphery of the gauge. The
tion.
Brie?y and in its preferred aspect the inven
clamping screw I5 is shown in Fig. 1, but has
tion may include the following principal parts‘:
55 been removed in the showing of Fig. 2.
When
2,405,346
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in clamped position the gauge W is retained in
whereby a work piece secured to said rotatable
the rotatable member l2 with the axis of its
screw threads alined with the axis of rotation
of the rotatable member.
member may be mounted for free adjustment on
said spindle and manually advanced therealong.
2. A holder for work pieces on the lapping spin
dle of a lapping machine comprising incombina
In order to adjust the angular or rotative po
sition of, the, gaugejfclamping “member 13 and
the gauge >W-retained therein relative to the body
tion, a body member, a‘member centrally mount
ed for rotation therein, clamping means on said
rotatable member for retaining an internally
member l0 during operation a gear I6 is formed '
on or riveted to the rotatable member I2 con- » ~
threaded work piece with its axis in alinement
centric to its axis of rotation. In the drawing
the gear 15 is separate from the member l2 and
is fastened thereto by rivets 23. Also friction-
- with the axis of rotation of said rotatable mem
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ally bearing against a portionofthis rotatable
member l2 are a plurality -' of ’ spring pressed
plungers l1 housed within recesses angularly dis
ber, an actuating arm extending from said body
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a member whereby .Nsaid holder and threaded work
piece may-be, oscillated during rotation of the
15 lapping,‘ spindle, means to rotatably adjust said
rotatable member relative to said body member,
and means to frictionally retain said rotatable
posed within the body member Hi.»I Theseplung
ers I1 and their springs [8 may be retained in
position by a ring 19 threaded on to the body'
member 10.
41.
rotatable member in successive‘ adjusted positions,
member in successive adjusted positions, whereby
a work piece secured to said rotatable member
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‘ In order to rotate the member 12 to which the 20 may be mounted for free adjustment on said spin
dle and manually advanced therealongr ,
gauge W being lapped is attached a pinion 20 is
3. A holder for work pieces on the lapping‘spin
dle of a lapping machine comprising invcombina
tion, ‘a body member, a member mounted for
rotation therein, said body member‘ and rotatable
member having a central opening extending
rotatably mounted within the body member l0
upon a short shaft 2| extending in a direction
parallel to the axis of rotation of the rotatable
member I2. This pinion carrying shaft 2| is
provided with a suitable handle 22 at its opposite
therethrough‘, work clamping means on said ro
end which may be actuated to manually rotate
the pinion 20 and thereby; angularly adjust the
gauge W relative to the vholder l0 and its arm I I.
tatable member, an actuating ‘arm extending from
, said body member whereby saidholder may be
clamping portion l3vof the rotatable member l2
oscillated ‘during rotation of the lapping spindle,
gear means to rotatably adjust said rotatable
and the gauge W is ?tted over a tapered screw
threaded lap as shown in the above referred to
housed within said body member and frictionally
, In operation a gauge W is clamped within the
application. ,While so. mounted in position the
holder, by means of its arm H, is oscillated
through any predetermined angle by suitable ac
tuating means such ‘as’ those described in the
above referred to application.‘
member relative to said body member; and means
, engaging said rotatable member to retain'said
rotatable member in successive adjusted positions,
whereby a work piece securedto said rotatable
member may be mounted for free adjustment on
said'spindle and manually advanced therealong.
th'e lapping
operation proceeds and the screw ‘threads within _- 1
4. A holder for work pieces on the lapping spin
the gaugeW being lapped. increase in diameter 40 dle of a lapping machine comprising in combina
tion, a'body member, a, member centrally mount
the pinion shaft 2| may be rotated slightly to an
ed for rotation therein, said body member and
gularly advance thegauge W upon‘the-lap to
rotatable member having a centralvopeningex
portions slightly increased in diameter ‘so that the
lapping can be continued progressively until the g tending thereth‘rough, clamping means onsaid
proper size of screw’threads' in the gauge is at 45 rotatable member .for retaining an internally‘
threaded work piece with its axis in alinement
tained.»
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What I claim is:
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with the axis of rotationof said rotatable mem
ber, an actuating arm extending fromsaid body
a
'1. A holder for work pieces on the lapping "spin
dle of a lapping machine comprising‘in combina- .,~ -
member whereby said holder and threaded work
tion, a body member, 'a member mounted for
rotation therein, work clamping means'on said
lappingspindla'means ‘to rotatably adjust said
as piece maybe oscillated during rotation; of the
rotatable member, an actuating farm extending
from said body member whereby said holder may
rotatable member relative to said body member,
member relative to said body member, and ‘means
housed within said body member and frictionally
engaging said rotatable member to retain said
may be mounted for freeadjustment of said spin
and means to frictionallyiretain said rotatable
be oscillated during rotation of the lapping spin- 7.. member in successive adjusted positions, whereby
a, work piece secured to said rotatable member
dle, gear means to rotatably adjust said rotatable ‘
dle and manually advanced therealong. ~ _-'
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ALDEN-M.‘
DRAKE.
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