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Патент USA US2403405

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July 2, 1946.v
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F, slRoLA
2,4Q3A95 "
'TURRET- HEAD FOR LATHES
Filed July 26, 1945
2 Sheets-Sheet l
_
lNVENTOR
?
FRANK 'SIROLA
July 2, '1946.
F. SIROLA
2,403,405
TURRET HEAD FOR LATHESv
' Filed July 26,- 1945 ,
2O.H
L
Emm
2 Sheets-Sheet 2
mm.?
7
INVENTOR
w
' 'ATTORNIEY
2,403,405
Patented July 2, 1946
UNITED STATES PATENT OFFICE
2,403,405
TURRET HEAD FOR LATHES
Frank Sirola, New York, N. Y.
Application July 26, 1945, Serial No. 607,236
6 Claims. ?
(01. ?29-48)
2
1
this invention includes a body or carrier I 0, adapt
This invention relates to new and useful im
ed to be mounted upon a lathe A (Fig. 1), and
provements in a turret head for lathes.
having a plurality of vertical dove-tail tongues
More speci?cally, the invention proposes the
I I, one of each of the four sides of the carrier.
construction of an improved turret head which
At the center of each of the tongues, the car
is characterized by tool holders in which the tools 5
rier has a bore provided with several diameters.
may be horizontally adjusted, and in which the
That is, at the bottom of the carrier is a short
tool holders themselves are vertically adjustable
bore l2, thereabove a larger bore 13 opening at
for vertical adjustment of the tools.
one side through the side of the tongue and there
Still further, it is proposed to provide a turret
head, as aforesaid, including a four-sided body, 10 above a still larger bore [4 also opening at one
side through the side of the tongue. The bores
each of sides being provided with a vertical dove
are aligned and in each set of aligned bores is
tail tongue, tool holders vertically slidable on the
an eccentric pin I5 having a journal I6 in bore
tongues and each having an upstanding screw
12, a cam I?! in bore l3, and a journal H3 in a
on which a nut is threaded, the nuts having
?anges bearing against the top face of the body 15 disc 19 in bore 14. Above the journal I8 the pin
has a groove 20 and thereabove, forming the top
and being adapted to coact with slotted eccentrics
wall of the groove, an integral disc 2| having a
which hold the nuts against vertical movement,
?at side 22. Above disc 2| the pin has a head
thereby inducing vertical movement of the tool
23 for a wrench. There are four pins.
holders upon rotation of the nuts.
A ?ller piece 24 rests on top of the carrier and
Another object is to provide a tool holder for
has a ?ange overlapping each of the discs 19,
the aforesaid turret head especially adapted to
holding them in place on the carrier. Filler piece
hold a boring tool.
24 has a centra1 bore in line with a central bore
Another object is to provide a tool holder for
26 in the carrier. The carrier further has two
the aforesaid turret head especially adapted to
25 diametrically opposed bores 21 forming recesses
hold a cutting or parting tool.
For further comprehension of the invention,
and of the objects and advantages thereof, ref
erence will be had to the following description
and accompanying drawings, and to the appended
claims in which the various novel features of the ?
invention are more particularly set forth.
In the accompanying drawings forming a ma
terial part of this disclosure:
Fig. 1 is a perspective view of a turret head
constructed in accordance with this invention, a
lathe being indicated fragmentally in dot-dash
lines.
Fig. 2 is a plan view of the head of Fig. 1.
Fig. 3 is a side View of the head of Fig. 1.
Fig. 4 is a section on the line 4?4 of Fig, 2, 40
parts being shown in full.
Fig. 5 is a section on the line 5?5 of Fig. 4.
Fig. 6 is a section on the line 6-6 of Fig. 4.
Fig. 7 is a perspective view of a boring tool hold
er adapted to be used in place of the tool holder
of the head shown in Fig. 1.
for coil springs 28, the bores 27 opening through
the bottom of the carrier. A disc 29 is disposed
below the carrier, and this disc has a circular
row of sockets 39 adapted to align with the bores
21. A ball 3| is retained in each bore 21 and the
aligned socket 3i] and is spring pressed toward
the socket 351 by the spring 28. A sleeve 32, in
tegr-al with the disc 29, extends upwardly through
the bores 25 and 25 and above the ?ller piece
where it is threaded.
A hub 33 is threaded on the
threaded end of the sleeve and tightened su?i
ciently to prevent the balls 3| from falling out
between the bottom of the carrier and the disc
29. A handle 34 is integral with the hub for op
erating same.
Hub 33 acts as a nut, bolting
down the ?ller piece.
A stem 35 is disposed in the hollow interior
of the. sleeve and extends through and below the
disc 29. The upper end of the stem is threaded
and a nut 36 is screwed thereon. The lower end
lies below the disc 29 and is integral with a slide
block 31 adapted to be employed for securing
Fig. 8 is a perspective View of a cutting or part
the turret head with a lathe 33 in the usual ?
ing tool holder adapted to be used in place of the
manner. The slide block can be quickly secured
tool holder of the head shown in Fig. 1, a parting
tool being shown assembled with the tool holder. 50 in or removed from the lathe merely by turning
the handle 34 to loosen the hub 33. After the
Fig. 9 is a fragmentary top plan view showing a
turret is connected to the lathe, the turret may
modi?ed form of the invention.
be turned to different positions, the balls riding
Fig. 10 is a vertical sectional View taken on line
from one pair of opposed sockets 30 to another.
Ill-10 of Fig. 9.
A tool holder 39 is vertically slidably mounted
The turret head for lathes, in accordance with
2,403,405
3
4
on each of the tongues, the holders 39 each hav
ing a dove tail groove for this purpose. The
is reserved to all changes and modi?cations com
ing within the scope of the invention as de?ned
holders 39 engage each other at their ends along
mitered edges 13!], as is clearly shown in Fig. 5,
this construction insuring strong backing for the
tool holder being used.
Each tool holder has a horizontal groove 4| for
receiving a tool (not shown). That is, each tool
in the appended claims.
d5 extending into the adjacent groove 23.
The operation of the turret head is as follows:
between said journals adapted to engage the
inner face of the adjacent holder ior locking said
holder'whensaid' pin is rotated; a hearing disc
oneach pin top' journ'a?l'?ttingin a recess insaid
carrier top wall; a nut"threaded?on-each of said
studs, each or?: said nuts ?having a? flangeaoutting'
the top, or" the; adjacent ?hearing disc and adapted,
when said cam portion does? not lock?the holder,
to move the holder vertically'depend'ent upon the
direction of rotation of" said nut; each of? said
eccentric pins having a groove in which? the ad
Having thus described my invention, what I
claim as new and desire to secure by United
States Letters Patent is:
1. A turret head for a lathe comprising a car
rier having four sides, each provided with a dove
holder is channel shaped in vertical cross sec
tail.tongue, a vertical bore adjacent each side
tion. Set screws1l52 ?are provided inzthe top Wall 10 and opening through the. side. of the adjacent
of the groove {01' use in securing the tool in place.
tongue, and a central bore, slide block means in
Each tool holder has four set screws, as is clearly.
said central bore for connecting said head to said
shown in Fig. 2. Each tool holder also has ex-'
lathe, a tool holder slidably mounted on each of
tending upwardly from its center, a threaded?
said tongues, each of said holders having a verti
stud 43 flat along two opposite sides. A nut lid
? cally, upstanding threaded stud, an eccentric pin
is threaded on each stud 53, each nut havingia
in each of said vertical bores, having journals at
roughed part for use in tightening it manually
' its ends, the bottom journals fitting in hearings
or with a wrench. Each nut 44 also has a flange
in. saidicarrier, each pin having a cam portion
First. the tools :are - secured; in. the.? tool holders
by? merely. placing them in: the; grooves; in: the
tool?hoiders and? then securing theinthereinthy
meansof the
screwslii?i Theturretihead is
then? assemble: vwitlrthe latheby means; of the
slide block 32, the handle
being. turned-?rst.
tczlc-osenthe sleeve so that'the slide block can.
be slid into the lathe, and then to? tighten it.
to loci: the-slide blockin place'..
Next; the tool holder being?usedirnust bead;v
justed vertically.
jacent nut ?ange fits, the top wall'oi'said?groove
Todo this, the eccentric. pin?
having one ?at sid'e adapted; whenturned'toward
saidadjacent nut, to leave the flange of the nut
is turned by means of. a wrench:appliedto-the
?tting. or. head.
so that the flat' side 22/ is.
uncovered. whereby when said? eccentric pin is
toward. the ?ange 115:. They nutiliflis then turned.
As the nut mlirests on top ?ofit-hedisc 59s the tool
rotated to lock said ?holder by. its said cam portion
'said top wall'. oi?. saidj groove overlies said nut
' holder either? raises? or lowers depending upon.
flange, and meansoverlying the. inner edges of?
said bearing discs, holding them against saidicar
the direction of rotation of the nut? 65; When
the proper vertical position hasibeen reached,.
the wrench isturned; turning the eccentric pin
rier.
so that the top wall or ?ange 2| overliesthe .
?ange
?at side ZZZIt-hen being rotated away.
from the ?ange � Thus the ?ange lt'z'iwis lockedv
in the grooverand the?tool holder? cannot move
vertically, At the-same time that'the flat side
22$ isrotaiedawavirornithe ?ange � the cam
25' is rotated, jamming against the inner face
oi the tool holder and wedging the dove~tail>
and opening through the side of the adjacent
tongue, and a central bore, slide; block?. means
in said central bore for connecting saidhead to
said lathe, a tool holder slidably mounted on
each-of said-tongueseach of said holders having,
a vertically upstanding threaded stud, an eccen
tongue in tlie?dove-tail groove,,furt-her securing
the tool holder rigidlytoithe carrier;
The tool holder 354 maybe- used with the turret
head in place of thetool holder 39 ii?desired. and?
tric pin in each? of said vertical bores having
journals at its ends, the bottom journals ?tting
in bearings in said carrier; eachpin having. a cam
the same true oi? the tool holder 3&3" oi'Fig. 8;
The tool holder 39-? distinguishes-i?ronrtlie tool?
holder 33 in that the grooved? has a? V-shaped
channel 5,5 in its bottom-wall adapting it; to hold 55
a boring tool. The tool-holder 39?" distingui' Pies?
from tlie?tool'holder 39 in that it hasra-s?riallowr
groove-M" for holding aipartingitool d?i'land cam
disc'?ii are employed for holding tlietool instead
of the set screws.
1
2. A?turret head for a lathe. comprising a car
? rier having four sides, each provided?with a dove
tail tongue, a vertical bore adjacent each side
portion between said journals, vadaptedto engage
the inner face of the adjacent holder for locking
said holder when said-pinisrotated, a bearing
disc on each pin- top journal ?tting in a recess
in'saide'carrier� top Wall, a nut threaded on each
of said studs, each of said nuts having a flange
abutting the-top of the. adjacent bearing disc and
adapted, when said-cam portion doesnot-lockthe
60 holdengto move the' holder vertically� dependent
Other parts of the tool holders-.ofIFigs. 'l and
8 corresponding to similar parts of the tool-holder
of Fig. 1 are indicatediby like references-with one?
or two accents added'respcctively.
In Figs. Sand 10 alvertical?sliding-wedgel5? is"
shown to be operable by aholtl' LLU", against thev
inciined surface llia- of the carrier. Ill-'4.
In other respects? this form of the invention is?.
similar to the previous form; and? similar.? parts
may be recognized by. the� same? numeralslwith 70
upon the direction of rotationiof said nut,-_each.
of saideccentric pins having, a groove in which
the adjacentinut flange ?ts,,the topwallfof said
groove havingjone ?at side adapted, when?iturned
towardtsaid adjacent nut,l_to' leave� the flange vof
the nut uncovered whereby'when saicheccentricv
pin? is. rotated .toplock said' holder- by its: said .cam
portion said:top wall of saidrgroove overlies-said
nutzflange, and means?. overlying the inneredges.
of saidzbearing, discs, holding; them against: said
an accent added.
carrier; said holders each-including;a horizontal
While I have illustratedland described?ithe pree
ferred embodiments of my invention,_ it-is =to~be
ing saiditool in said slot: .
understood that I.do-not-limitvmyself to theipree'
cise- constructions herein disclosed and?ltherright
slot for receiving a toolgand- four studs:for=lock1
.
3. A turret head for a lathe comprisinglacare
rierthaving'zfouitsides, eachiprovidedwithtaidove
2,403,405
5
6
tail tongue, a vertical bore adjacent each side
and opening through the side of the adjacent
tongue, and a central bore, slide block means in
said central bore for connecting said head to said
lathe, a tool holder slidably mounted on each of
said tongues, each of said holders having a ver
opening through the side of the adjacent tongue,
tically upstanding threaded stud, an eccentric pin
in each of said vertical bores having journals at
and a central bore, slide block means in said cen
tral bore for connecting said head to said lathe,
a tool holder slidably mounted on each of said
tongues, each of said holders having a vertically
upstanding threaded stud, an eccentric pin in each
of said vertical bores having journals at its ends,
the bottom journals ?tting in bearings in said
carrier, each pin having a cam portion between
its ends, the bottom journals ?tting in bearings
in said carrier, each pin having a cam portion 10 said journals adapted to engage the inner face
of the adjacent holder for locking said holder
between said journals, adapted to engage the
when said pin is rotated, a bearing disc on each
inner face of the adjacent holder for locking said
pin top journal ?tting in a recess in said carrier
holder when said pin is rotated, a bearing disc on
each pin top journal ?tting in a recess in said
top wall, a nut threaded on each of said studs,
carrier top wall, a nut threaded on each of said 15 each of said nuts having a ?ange abutting the
top of the adjacent bearing disc and adapted,
studs, each of said nuts having a ?ange abutting
the top of the adjacent bearing disc and adapted,
when said cam portion does not lock the holder,
to move the holder vertically dependent upon the
when said cam portion does not lock the holder,
direction of rotation of said nut, each of said
to move the holder vertically dependent upon the
direction of rotation of said nut, each of said 20 eccentric pins having a groove in which the adja
cent nut ?ange ?ts, the top wall of said groove
eccentric pins having a groove in which the adja
having one ?at side adapted, when turned toward
cent nut ?ange ?ts, the top wall of said groove
said adjacent nut, to leave the ?ange of the nut
having one ?at side adapted, when turned to
uncovered whereby when said eccentric pin is
ward said adjacent nut, to leave the ?ange of
rotated to lock said holder by its said cam por
the nut uncovered whereby when said eccentric
tion said top wall of said groove overlies said nut
pin is rotated to lock said holder by its said cam
?ange, and means overlying the inner edges of
portion said top wall of said groove overlies said
said bearing discs, holding them against said
nut ?ange, and means overlying the inner edges
of said bearing discs, holding them against said
carrier, said slide block means including a disc
carrier, said holders each including a horizontal 30 beneath said carrier having a row of recesses,
two balls in diametrally opposite recesses, springs
slot for receiving a tool, and four studs for look
in bores in said carrier pressing down on
ing said tool in said slot, each of said holders
the top of said balls, a hollow sleeve integral with
having a channel in the bottom wall of its slot.
and extending upwardly from said. disc, a handle
4. A turret head for a lathe comprising a car
rier having four sides, each provided with a dove (R Li secured to the top of said sleeve, a slide block
disposed beneath said disc and having a stem
tail tongue, a vertical bore adjacent each side
extending upwardly through said sleeve, and a
and opening through the side of the adjacent
nut on the top of said stem preventing disassem
tongue, and a central bore, slide block means in
blage of said stem from said sleeve.
said central bore for connecting said head to said
6. A turret head for a lathe comprising a car
lathe, a tool holder slidably mounted on each of,�
rier having four sides, each provided with a dove
said tongues, each of said holders having a ver
tail tongue, a vertical bore adjacent each side
tically upstanding threaded stud, an eccentric
pin in each of said vertical bores having journals
at its ends, the bottom journals ?tting in bear
and opening through the side of the adjacent
tongue, and a centralbore, slide block means in
ings in said carrier, each pin having a cam por 45 said central bore for connecting said head to said
lathe, a tool holder slidably mounted on each of
tion between said journals adapted to engage the
said tongues, each of said holders having a ver
inner face of the adjacent holder for locking said
tically upstanding threaded stud, an inclined sur
holder when said pin is rotated, a bearing disc on
face at the bottom of said carrier, a vertically
each pin top journal ?tting in a recess in said
carrier top wall, a nut threaded on each of said 50 slidable wedge adapted to be engaged against the
said inclined surface of the carrier and a bolt
studs, each of said nuts having a ?ange abutting
rotatably engaged in the said wedge for locking
the top of the adjacent bearing disc and adapted,
said holder in position, a nut threaded on each
when said cam portion does not lock the holder,
of said studs, each of said nuts having a ?ange
to move the holder vertically dependent upon the
direction of rotation of said nut, each of said ecn 55 abutting the top of the adjacent bearing disc
and adapted, when said cam portion does not
- centric pins having a groove in which the adja
lock the holder, to move the holder vertically de
cent nut ?ange ?ts, the top wall of said groove
pendent upon the direction of rotation of said
having one ?at side adapted, when turned toward
nut, each of said eccentric pins having a groove
said adjacent nut, to leave the ?ange of the nut
in which the adjacent nut ?ange ?ts, the top wall
uncovered whereby when said eccentric pin is ro
of said groove having one ?at side adapted, when
tated to lock said holder by its said cam portion
turned toward said adjacent nut, to leave the
said top wall ?of said groove overlies said nut
?ange of the nut uncovered whereby when said
?ange, and means overlying the inner edges of
eccentric pin is rotated to lock said holder by its
said bearing discs, holding them against said car
rier, each of said holders having a horizontal slot 65 said cam portion said top wall of?said groove
overlies said nut ?ange, and means overlying the
for receiving a parting tool and two cam washers
inner edges of said bearing discs, holding them
for securing said tool in said slot.
against said carrier.
5. A turret head for a lathe comprising a ?car
FRANK SIROLA.
rier having four sides, each provided with a dove
tail tongue, a vertical bore adjacent each side and 70
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