close

Вход

Забыли?

вход по аккаунту

?

код для вставки
Oct. l, 1946. .
R. KURZWEIL
2,408,658
TURRET LATHE HEADSTOGK
Filed may 5, 1943
2 sheets-sheet- 1
Oct. 1511946.
R. KuRzwEn.
-
2,408,658
TURRET LATHE HEADsTocK
Filed May 5, 1943
2 sheets-sheet 2
/
_
_/
_
_
l/
\
V/
_
„?\_\w.m
/
Ñ
MV
f/_ _ _ _
m
M
,m
,„
\
l/
__
n„_A/// /f _Mw3.MgM..W
„_
/
.
wf”
\
_
„_
\
.MN
mm
_.__
__ _
œ
Rm
_ \/
J
_
_
Foefer '/raezmf/L
vAT TO RN EYS
.
2,408,658
Patented Oct. 1, 1946
" UNITED vSTAT Es. A*P'li'rlalw'r >oFFlcl;
¿l 2,408,658
, TURRET. LATHE HEADSTOCK
Robert Kurzweil, Kew Gardens, N. Y., assignor to
Morey Machinery Co., Inc., Astoria, Long Is
land, N. Y., a corporation of New York
`
Application May 5, 1943, serial No. 485,955
20 Claims. (Cl. 82-28)
Y vThis invention relates to headstocks and -is
particularly directed- to a headstock of a turret
lathe.
'
'
'
'
,
,
An' object of'this invention is to provide in a
headstock of the character described, improved
vide in a headstock of the character described, a
brakeA normally engaging the spindle when the
clutch is in neutral position, and means to simul
taneously connect the spindle to either the high
speed range drive or the low speed range drive
means to drive the spindle at a high speed range
through clutches, and simultaneously release the
and low speed range. The means for’driving _the
spindle at the high speed range comprises a'di
clutches and brake are controlled by one single
brake, the construction being such that the
lever. The improved brake actuating device
comprises a vcam which may be moved in either
on the work piece. The driving connection be ' ‘- direction to actuate the brake with a minimum
of effort.
tweenV the motor and the spindle is by means of
Yet a further object of this invention is to pro
rubber belts which provide a smooth drive due to
vide in a headstock of the character described, a
the elasticity of the belts.
'
rect drive _onthe spindle without the use of gears,
thereby eliminating any possible chatter marks
A further object of this inventionis to provide 15 hollow spindle mounted on two tapered roller
in a headstock of the character described, a l' bearings inthe headstock housing, said roller
bearings facing each other with the tapers of
spindle supported in the ’headstock casing on a
the rollers in opposite directions, adjustment of
pair 0f bearings, and highly improved means to
both bearings being eiïected by one nut on the
drive the spindle, including a sleeve telescoped
on the spindle and supported in a separate pair 20
Still another object of this invention is to pro
of bearings in the headstock casing, a clearance
being provided between the sleeve and the spin
vide in a headstock of the character described a
sleeve telescoped on the spindle and clutched to
dle, and a clutch comprising a part on thesleeve
the spindle,'with a clearance between the spindle
and a part on the spindle whereby when the
clutch is actuated the spindle is driven from the 25 and sleeve, said spindle being supported in the
housing likewise' by means of `a pair of roller
sleeve without imposing any bending moment on
bearings facing Yeach other with the tapers of the
the spindle.
`
spindle,
With such construction whenthe clutch is in D
neutral, the sleeve and spindle run perfectly con
centric without touchingea‘ch other;l By actuat
-
»
`
.
.
rollers infopposite directions, and adjustment for
both bearings being- by means of a single nut,
such bearings being furthermore Lspaced from
ing> the clutch, torque- is transmitted from the l ’ each other,À and said sleeve supporting a gear
sleeve to the spindle Without any bending moment
being imposed on the spindle as a result of the
drive'. Thus the loadcaused by beltltension is
mounted thereon> and between the bearings for
engagementwiththe back. gears likewise clutched
to the spindle, said sleeve, clutches and back gears
taken up through the sleeve in the housing or 35 being interposed between- the two roller bearings
headstock casing itself and does not affect the
spindle; and this advantage is due to the fact
that the sleeve is separately supported in the
headstock and does not rest' upon the spindle.
Still another object of this invention is to pro
vide in a headstock of the character described a
spindle> supported on vspaced bearings` in the
- which support the spindle, thereby providing a
well balanced construction. '
-
~
Yet a further object of this invention is to pro
vide a compact, rugged and durable headstock of
40 the character described, which shall be relatively
inexpensive to manufacture, easy to assemble,
which ‘shall -be smooth and positive in operation,
and yet practical and eiiicient to a high degree.
headstock, a sleeve telescopéd on the spindle and
` Other vobjects of this invention will in part be
.likewise s'upported'on separate bearings in the
headstock, a clutch directly connecting the sleeve 45 obvious and in part hereinafter pointed out.
The invention accordingly consistsïin the'fea
with the spindle to 'provide ahigh speed range
drive for the spindle, there further being pro
tures- of construction, combinations of elements,
and arrangement of parts which will be exempli
vided a low range speed drive, the same compris
iied in the construction hereinafter described,
ing a gear mounted by means of a bearing on the
and of which the scope of application will be in
spindle and clutched to the spindle, and connect
ed to a gear on the sleevethrough back gears.
The back gear drive consists of four gears, _pro
dicated in the following claims.
,-
'
In the accompanying drawings in which is
viding aY means of reducing the spindle 'speed in
shown one of .the various possible illustrative em
one step byva given ratio.
bodiments of this invention,
'
'
,
.y
"
Yet a further object of this invention is to pro
. f
,
n
Fig. l_ is a` horizontal, cross-,sectional view lof, a
2,408,658
3
Fig. 2 is a cross-sectional view taken on line
2_2 of Fig. 1; and
Fig. 3 is a cross-sectional view taken on line
3_3 of Fig. 1.
Referring now in detail to the drawings, there
is disclosed'> .therein a headstock embodying the
invention. The same comprises a headstock cas
4
|93 and the inner rim 9d of the opening in the
extension.
Removal of the pulley belt is thus conveniently
accomplished merely by removing the cover 9e
and slipping the belt over the annular structure
i113.
In the spindle is a double ball bearing 66 and
headstock embodying the invention taken through
the axis of the spindle;
.journalled on said ball bearing is a- gear 62 pro
vided with a clutch spider 64. J ournalled with
ing or housing 9 in which there is mounted a pair. 10 in a pair of horizontal, space-d, ball bearings in the
headstock housing is a back shaft 59. Keyed to
of spaced roller bearings 1 facing each other
“one” end of the shaft 59 is a gear 51 meshing with
with the tapers of the rollers in opp‘osit'e direc
the gear 43,v and 4carried on said back shaft is also
tions. J ournalled within the roller bearings 1 isa gear 6U meshing with the gear 62.
a hollow spindle 5 the front en'd of which' is en'
Mounted' on the spindle 5 and keyed .thereto
larged as at Il. There is attached to said front 15
Y and disposed between the clutch spiders 39 and
end by means of screws 2l, a retainer i3 for a
64, is a clutch sleeve 21 ñxed to :the spindle by
spring collet I5. A driving button' l1 on the head
means* of screws 68. On the sleeve 21 is a ring
Il of the spindle registers in blind hole 1'9 of the
10 provided with an annular external groove 12.
retainer I3. The spindle may be furthermore pro
Said clutch is provided with a pair of spaced
vided with screw threaded apertures 23 for at
screw threaded annular members 35 and 31 to
tachment of a chuck thereto, in the manner well
which are screwed collars 33. Members 35 and
known in the art.
4
'
_
31 have oppositely tapered inclined surfaces 19.
Highly improved >means is provided for driv
Pivoted to the sleeve 21 are vlevers or dogs 14 car
ing the spindle. To this end a portion 4‘9 of cas
ing or housing 9 supports a pair _of spaced roller
bearings 4I facing each other likewise with the
tapers of said roller bearings in opposite direc
rying" rolls 16 adapted to selectively press against
v the inclined surfaces 19.
Interposed between one collar 33 and clutch
spiderf39 are members 29 supporting notched
tions. It will be noted that .the roller bearings
discs 3l receiving said spider 39 Within said
4I are disposed between the roller bearings 1.
Telescoped on the spindle 5 is a sleeve`41 jour 30 notches. Engaged/by the other'v collar 33 are
members 29 adapted to press' against notched
nalled within the roller bearings 4| and thus be
discs 3l likewise having notches receiving the
spider 64 therein.
ing supported directly by the headstock housing
through the roller bearings. A clearance is pro
vided between the sleeve 41 and the spindle where
by said sleeve and spindle are »concentric or co
axial.
a
The clutch is- of well known construction and
35 when the ringV 10 is moved to the. left the spindle
will be' clutched to the sleeve to transmit the
drive from the' pulley 53 directly to the spindle
while the back gears idle. Upon movement of
the ring 18 to the right, the spindle is clutched
shown) or any other suitable motive power. On 40 to gear 62 whereby ,the drive for the spindle is
through the back gears.
the sleeve 41 and between the roller bearings 4I
One end of driving sleeve 41 is threaded, and
is, a pinion or gear 43 keyed to the sleeve ¿as at
receives a nut |92` which presses the pulley
45. ' At one end of the sleeve 41 is a clutch spider
aga-inst one roller bearing and pulls up on sleeve
39.
~
d1 so that the clutch spider portion 39 thereof
In order to remove a belt 55 for replacement it
presses against the other roller bearing. The
is contemplated that portions of the housing may
cones of the ~roller bearings are adapted to press
be removable to provide Vaccessto the »belt pulley
inwardlyl against parts49a, 49h' of the headstock
53 and removal of the belt 55atheref’rom. The
housing.` With such> construction _the adjust
headstock housing is formed with parallel walls 9a
Keyed to one end portion 5l of sleeve 41Y is a
pulley 53 engaged by rubber orielastic V belts 55
connected to a motor in the vase of the lathe (not
and 9b provided with .through openings 9j re
ceiving the bearings 59a and an` extension 9c out
wardly ofA the parallel wall 9a is formed with an
opening 9d.> The housing is further formed with
a bracket like part HB3 located therein and spaced
so
ment of `the roller bearings 4i ’ is taken upv by
the single nut |072.
The roller bearingsV 1a on the extreme left
end of the spindle as viewed may' likewise- be
adjusted by means of a nut |05 on a threaded
from the inner rim of the opening 9d as well 'as 55 portion'> of the spindle. By adjusting the nut £05
the cone of roller bearing `1ct on the left endvof
from the parallel wall 9a. A cover 9e is provided
the spindle 5, as viewed is pressed against a
for the opening in the extension 9c. The other
bearing cover' i031) iixed to‘ a portion |03 of the
parallel wall 9b and the part |93 are formed with
headstock housing.
aligned bearings 1, 1a respectively, in which the
Means is provided to selectively actuate the
60
spindle 5 is journalled.
clutches. To this end there is journalled on op
The parallel wall 9a is formed with a through
opening 9j through which the spindle 5 passes and
is supported by the bearing means 4l, Vthere be
posite walls of the housing a ,vertical shaft'84
supporting a. lever fork 82. OnV the lower bifur
cated arms of the forkv are shoes 80 engaging in
ing a sleeve 41 surrounding the spindle which is 65 the groove 12 of, said ring 10. Fixed to the upper
end of shaft 84 is a lever handle 85 to a‘ctuate
journalled in the bearing means 4IIt will be noted that the sleeve 41 projects be
lUpon swinging lever 85, fork B2 will swing to
yond the ñrst parallel wall 9a and into the ex
shift ring, 1U, to the right or left, depending upon
tension 9C of the housing and that the pulley 53
is fixed to that portion of the sleeve which so 70 the direction of movement of the lever, to selec
thelclutches._
.
l
,
.
tively actuate .the high and lowI ranged speed
projects. Thus the pulley is located between part
|03 of the headstock housing and the parallel
Means is provided to brake the spindle when
wall 9a and because of .this disposition of parts
.the endless belt, when taken'oiï- the pulley may , the clutch is in neutral, and release the brake
be received through the space between the part 75 when 'either of the clutches are actuated. To
clutches.
_.
.
2,108,658
.
l6
this end theupper'end of-jtheforkzlever 82fis
'spectively with thef gear ori-said bearing and the
bifurcated as at'86 supporting a transverseV pivot
pin 81.r Pivoted to said pinv81 is'a horizontal
rod 90, formed` with a groove providing a pair of
gear' on" said sleeve,- and" means y to clutch: the gear
` 'ònïA said bearing, to said spindle, said‘sleeve; clutch
mea'nsïand- bearing on the spindle being located
between themfirst namedpai‘r of bearings'.v ‘~
»2. ïIn a headstockfía housing, a spindle jour.
nalled thereon, a sleeve telesooped on saidspindle
opposite frusto-oonical Acamrneizlv surfacesv 93, 94.
Said rod kpasses through openings in a slotted
block 9| iixed to the.` housing.
Y
f
‘ Keyed to the spindle is a brake drum 98 formed
with an external annular groove 99. >Surround
and -„iournalled on said housing, a gear onA said
IUI, engaged within said groove 99. 7
spindle,f>meansl to simultaneously releaselthe
spindle, back gears.i connecting said sleeve and
ing the brake drum area, pair of yokes 96, 91 l0 gear, a pair >of clutch means to selectively clutch
having substantially semiannular portions |00,
the spindletò=fthesleeve or gear, a brake onsaid
.
.
Said yokes 96, 91 are pivoted together at one
brake and actuate one ‘ofsaid clutchfmeans, ak
end îasat 104. .The yoke'98 isvformedvwith a
'pulley yon 'said "sleeve, vand aïbelt drive?. for, said
through opening; `and screwed to the other yoke 15
>pulley.VA
3. In ' aA headstock,
î
if» .i a Ahousing,=a
v
11`
spindle-jour.
<:s
S1 isla pin I08~passing through said opening and
nalledîthereon,” a sleeve telescoped on 4saidfspindle
andßj'ournalled on said housing, a gear on‘said
.Interposed between said nut and the >yoke 96
is- -a-fcoilcompression >spring |06.> At thejouter
>spindle,-jba'cl'z.gears’connecting said sleeve land
ends of yokes 196, 91v are4 opposite substantially 20 gear, arpair‘of clutch' meansto selectively clutch
'semi-,annular 'ridges H0 engaging the frusto
the spindle to the sleeve or gear, a _brake on said
conical portions 93, 94 of rod90. When the rod
spindlegandfmeans to simultaneously ,release the
90 lis'in a position shown in Fig. 1 of the draw
brake and a‘ctuatefone of :said clutch means, said
clutch actuating and brake releasing means in
ings, the brake >`is in actuating position and the'
clutch is neutral. '
25 Vcludin‘gia«single'lever'and means to connectzsaid
carrying` a nutA onv its outer end.
f
"
»
' Upon moving the lever handle '85 in one direc-y
' tion, rod 99 is shifted axially to the right, look
levertY tos'aidl` clutch means >and brake. f i'
ing ata-Fig., l, torelease the brake andY clutch
the spindle to lthe sleeve.49. Upon moving >the
n’alled thereon', avsleeveA .on the spindle', a gear f
on said-ïspindle‘spaced from the sleeve, .a pair of
‘clutch’means' to vselectively clutch, the spindle >to
said-sleeve or gear, a'ringïonrsaid'spindle adapted
lever handle 85 in an opposite direction, rod 90'
shifts to the left to >release the brake and con
nect the other side of the clutch to the gear 62
for drivingthefspindle through the back gear-_
to `‘aotuate’said clutch'vmeans, a fork pivoted to
said housingVone'arm'of the fork havingmeans
tofeng'age said ring,.-a rodpivoted> to another, arm
of the’forlga brake on the s'pindlaand‘means
It will now be, understood that for theA high
speed rangeno gearsare used for driving the
spindle thus eliminating any possible chatter
marks on the work piece.
oni the 'rod to operate said brake.
‘ _of lelastic belts providing a smooth drive.
nalled thereon, a sleeve on Ythe spindle, aL gear on
kItrwill be furthermore noted ,that= the sleeve
41 being journalled directly in thehousing does
Vnot transmit bending moment tothe spindle.
Any load caused by Athe belt tension is taken up
40
by the housing itself ~ and has no effect on the
ofthe fork', abrake on thespindle, meanson the
-
The clutch and brake are operatedby a single
rodv to operate said brake, and a lever-iixed to
lever and the brake is automatically released
With engagement of the clutch either to the high
or low speed side; and converselygthe .clutch is
released as soon as the brake
said fork for oscillating' Vthe same.
The conical surfaces in the brake rod 90 acts
-olevicein which the several objectsof this in
tog'rneet the conditions 'of practical use; ~
Y _As ïvarious possible» embodiments might .be `
having ridges engaged in said >groove,f_,saidv rod
beingV> adapted to open up said yokes when said
lset forth,‘it yis to be understood that all-Ymatte'r
herein set `forth or shown in the vaccompanying
rod is shifted axially in either direction.
spaced bearings in the housing, a >hollow spindle
` y
journalled withinl said- bearings, asleeve tele
y Having l'thus described my invention,- I -claim
scoped on said~` spindle,.` bearings Ain said housing
to support said sleeve, means to clutch, said sleeve
to said-spindle, a bearing on said spindle, agear
'as ‘new and desireto js‘ecurexbyk Letters Patent: f, .
`1. In a headstock, ahous'ing, a pair of spaced
bearings in the housing,"ìa ,spindle- journalled
within said bearings, a sleeve telescoped on said '
spindle and journalled within saidhou'singfagear
1;; v
y "7. ' A h'eadstock comprising a housing, a pair of
»drawingsis to »be interpreted as illustrative and
'
rod toreleaseisaid brake, andaflever fixed to said
Vforkfor oscillating the-same, said Vrod having a
‘ groove and said brake comprising a pairof yokes
»made ,of the _above invention, andûas various
changes might be made in the embodiment above
spindle, bearings in said housing to support said
sleeve, means to clutch sa'id'rsleeve to said spindle,
aj bearing' onsaid spin'dlefëa4 gear On said last
lnamedl bearing,- 'a' back' shaft'~ parallel to the
_
to engage said ring, a rod pivoted to another arm
ofthe fork, a brake onthe-spindle, means _on the
fvention are achieved andgwhich is well adapted
_ ,
. Y
. said sleeve or gea-r, a ring on said spindle adapted
to actuate said :clutch means, a Afork pivoted to '
saidY housing, one arm‘of the fork vhaving means v
K , ,_
. _Itwill thusV be seen that` there is kprovided ra
~
-
nalled thereon, a sleeve on the spindle, a'gear on
said spindle yspaced from the sleevefapair of
clutch means to selectively clutch the spindle to
as a cam in either direction whereby the release
__of the brake may be easily affected, ,_ ~
n
6. vIn a headstock, ay housing, a spindleijour.
applied. ~
not in; aflimiting sense.
saidspindle spaced from the sleeve, av pair; of
clutch lmeans to »selectively clutch .the-'spindle .-to
said sleeve or gear, a ring on saidspindleìadapt’ed
» to actuate said clutch means, a fork> pivoted to
said housing, >one arm of the fork having means
to engage said=ring, a rod‘pivoted to another arm
spindle. >The sleeve transmits only torque to the
l
,
`5'. In ‘a headstock,.a housing, a spindle .jour
The drive is by means
spindle throughrthe clutch.
~
4;~In~afheadstock, a hous1ng,»a spindlef‘jour.
'70
on said ‘last bearing, a back shaftparallel to' the '
spindle and‘journalledwithin said housing, a gear
onv said sleeve, lgears on .said .shaft-meshingre
'spectivelywith the gear on said'bearing and the
gearon said1-s'leeve,¿and.- means to-clutchîthe gear
on'saidbearing to said spindle. ,
Yonv ‘said’ sleeve, »gears on 'rsaid A"sh'a'fiïineslfiing re 75 v'8.' A ïh'eadstö‘okf comprising a ïhousingf a'hollow
2,408,658
8
7
spindle journalled thereon, a sleeve telescODed
for rotation, a backshaft parallel vto the spindle,
on said spindle and journalled on said housing,
a gear on said spindle, back gears connecting
a gear fixed to said sleeve for rotation therewith,
a gear _on the back shaft meshing with the gear
on the sleeve, a second gear on said back shaft,
a gear meshing with the second gear on the back
shaft, means to selectively clutch the spindle to
the sleeve or to the gear meshing with the second
gear on the back shaft, a pulley on the sleeve, and
said sleeve and gear, a pair of clutch means to
selectively clutch the spindle to the sleeve or
gear, a brake on said spindle, and means to si
multaneously release the brake and actuate one
of said clutch means.
~
an endless belt to drive ther pulley, the bearing
9. In a headstock, in combination, a spindle, a
clutch sleeve fixed thereto, a pair of friction
clutch means carried in spaced relation on the
means on the housing for supporting the sleeve
being disposed between the pulley and one of the
clutch sleeve including cam means, one 0f said
spindle bearings.
v
clutchmeans including a sleeve, a pulley carried
15. In a headstoch‘a housing,.a pair of spaced
by the sleeve, means to drive the pulley, a gear
carried by the sleeve, e, back shaft, a gear carried
by the back shaftin mesh with the last named
gear, the other of saidjclutch means including a
gear, a pinion coacting with the last mentioned
gear carried by thebackshaft, brake means en
bearings on the housing, a hollow spindle jour
nalled in said bearings, a sleeve surrounding
gagingthe spindle and manually actuatable shift
said spindle and disposed between said bearings,
bearing means on thehousing to support said
sleeve for rotation, a back shaft parallel to the
spindle, a gear ñXed to said sleeve for rotation
20 therewith, a gear on the back shaft meshing with
the gear on the sleeve, a second gear on said
able means formed »with opposed cam surfaces
back shaft, a gear meshing with the second gear
on the back shaft, means to selectively clutch the
actuate the clutch means and release the brake
spindle to the sleeve or to the gear meshing with
means.
»_
.
10. >In a headstock, in combination, a spindle, a 25 the second gear on the back shaft,ïa pulley on the
sleeve, and an endless belt to drive the pulley,
clutch sleeve fixed thereto, a’pair of clutch means
the bearing means on the housing for lsupporting
carried in spaced relation'on the clutch sleeve,
the sleeve being disposed between the pulley and
onev o_f said clutch means comprising a sleeve,
one of the spindle bearings, said clutch means
means to drive the sleve, a gear carried by the
sleeve, a back shaft, a gear carried by the back 30 being located between the sleeve bearing means
and said one of said spindle bearings.
~
shaft in meshwith the last named gear, the other
i6. In a headstock, a housing, a pair of spaced
of said clutch means comprising a gear, a pinion
coacting with saidV clutchmeans to selectively
coacting with the last mentioned gear carried
by the back shaft, brake means engaging the
bearings on the housing, a hollow spindle jour
nalledin said bearings, a sleeve surrounding said
spindle; and shi‘ftable means to selectively actuate
the clutch meansand release the brake means.
l1. In a headstock,.in combination, a spindle,
a clutch sleevev ñxed thereto, a pair of clutch
means carried in spaced relation on the clutch
spindle and disposed between said bearings, bear
ing means'on the housing to support said sleeve
for rotation, a back shaft parallel to the spindle,
sleeve, aback shaft, driving connections between
the sleever and the back shaft, vdriving connec
shaft, means to selectively clutch the spindle
to the sleeve or to the gear meshing with the
a gear ñxed to said sleeve for rotation therewith,
a gear on the back shaft meshing with the gear
sleeve comprising cam means, one of said clutch 40 on the sleeve, a second gear on said back shaft,
means comprising a sleeve, means to drive the
a gear meshing with the second gear on the back
tions between the other of said clutch means and
second gear on the back shaft, a pulley on the
the back shaft, brake means engaging the spindle, 45 sleeve, and an endless belt to drive the pulley,
the bearing means on the housing for supporting
andshiftable means formed with opposed cam
the sleeve being disposed between the pulley and
surfaces coacting with the clutch cam means to
selectively actuate the clutch means and release
one of the spindle bearings, said clutch means
being located between the sleeve bearing means
12. In a headstock, in combination, a spindle, 5.0 and said one of said spindle bearings, said clutch
being located between the two gears on the back
a clutch sleeve fixed thereto, a pair of clutch
thebrake means.
,
Y
s
means carried in spaced relation on the clutch
sleeve, a pulley. carried by one of said `clutch
means, `means to drive the pulley, a back shaft,
shaft.
17. A headstock comprising a housing, said
housing having parallel walls, and an extension
driving connections between the pulley andthe .55 beyond> one of said parallel walls formed with
an opening, said housing being further formed
back shaft, driving connections between the other
of said clutch means and the back shaft, brake
means engaging the spindle, and means to Yselec
-tively actuate the clutch lmeans and release the
brake means.
'
l
<
13. Ina headstock, in combination, a spindle,
with a party located inl said extension and spaced
from the inner rim of said opening, and from
said one of. said parallel walls,` a cover for the
60 opening in said extension, the other of said paral
a clutch sleeve ñxed thereto, a pair >of clutch
means carried in spaced relation on the clutch
sleeve including cam means, one of said clutch
means comprising a sleeve, means to drive the 65
sleeve, aback shaft, driving connectionsbetween
the back shaft and the sleeve, driving connec-'v
tions between the other of said clutch means
and the back shaft, brake means controlling the
spindle, and means to release thexbrake.
»14. In a headstock,.a housing, a pair of spaced
bearings `on the housing, a hollow spindle jour
nalled‘in said bearings, a sleeve surroundingsaid
spindle and disposed between said bearings, bear
ing means `on the housing@ «supportsaid sleeve
lel‘walls _and said part being formed with aligned
bearings, a spindle journalled in said bearings,
the first of said parallel walls being formed with
a through opening through which said spindle
passes, bearing means within said through open
ing, Yaî sleeve surrounding said spindle and jour
`nailed insaid last-mentioned bearing means, a
baci; shaft within said housing, bearing means
, in'said parallel walls to support said back shaft,
a gear fixed to said sleeve, >a gear on the back
shaftmeshing with the gear on the sleeve, a sec
ond gear on the back shaft- spaced from the ñrst
gear on said back shaft, a gear meshing with the
' second gear on-the back shaft, means to selec
tively, Clutch said »spindle »i0 Said sleeve' v01' to
2,408,658
10
spindle to said sleeve or back shaft, said sleeve
having a portion projecting into said extension,
the back shaft, said sleeve projecting beyond said
a pulley ñxed to the extending portion of said
second parallel wall and into said extension of
sleeve, said pulley .being located between said
said housing, a pulley fixed to the portion of the
sleeve which projects into said extension of the 5 part and said first parallel wall, an endless belt
on said pulley, said -belt being movable between
housing, said pulley being located between said
the space between said part and the inner rim
part of'said housing and said first parallel wall,
of said extension upon removing said cover.
and an endless belt on said pulley adapted to
19. In a headstock, a housing, a spindle jour
be removed from the housing by removing said
cover to permit the belt to be moved through the 10 nalled thereon, a sleeve telescoped on said spindle
and journalled on said housing, a gear on said
space between said part and the inner rim of the
spindle, back gears connecting said sleeve vand
opening in said extension.
Y
gear, a pair of clutch means to selectively clutch
18. In a, headstock, a housing having parallel
' the spindle to the sleeve orrgear, a brake on said
walls, and a wall ’interconnecting the parallel
walls, said housing being formed with an exten 15 spindle, means to simultaneously release the
sion extending from one of said parallel walls,
brake and actuate one of said clutch means, and
said extension being formed with an opening,
means to rotate said sleeve.
said housing being formed with an integral part
20. In a headstock, a housing, a pair of spaced
bearings in> the housing, a> spindle journalled
located within said opening in said extension, a
cover for the opening in said extension, the other 20 within said bearings', a sleeve telescoped on said
of said parallel walls and said part being pro- ' spindle, bearings in said housing to support said
vided with bearings, a spindle journalled within
sleeve, means to clutch said sleeve to said spin,-v
said bearings, and extending through said hous
dle, a bearing on said spindle, a gear on said last
bearing, a back shaft parallel to the spindle and
ing and extension, the ñrst of said parallel walls
being formed with a through opening, bearing 25 journalled within said housing, a gear on said
sleeve, gears on said shaft meshing respectively
means within said through opening, a sleeve sup
ported by said bearing means and surrounding
with the gear on said bearing and the gear on
said spindle, a back shaft between said parallel
said sleeve, and means to clutch the gear on said
bearing, to said spindle.
walls, a driving connection between said back
ROBERT KURZWEIL.
shaft and sleeve, means to selectively clutch said -30
the gear which meshes with the second gear on
Документ
Категория
Без категории
Просмотров
0
Размер файла
985 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа