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Nov. 12, 194.6.
A. D. LANDEIRS ETAL
2,411,135
LATHE FOR TURNING LASTS OR THE LIKE
FiledJuly 27, 1944
2 Sheets-Sheet l
1.
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Nov. 12, 1946.
A. D. LANDERS EI'AL
LATHE FOR TURNING LASTS OR THE LIKE
’
Filed Jul-y‘27r, 1944
2 Sheets-Sheet 2
9
48
2,411,135
Patented Nov. 12, 1946
2,411,135
UNITED STATES PATENT OFFICE
2,411,135
LATHE FOR TURNING LASTS ‘OR THE LIKE
Alton D. Landers and Fred H. Lindsay, Brockton,
Mass., assignors to Woodard & Wright Last (30.,
East Bridgewater, Mass., a corporation of Mas
sachusctts
‘ Application July 27, 1944, Serial No. 546,777
‘
1
4 Claims.
(Cl. 142—15)
2
r
.
Our present invention relates to improvements
The lathe bed 5 has parallel ways Ill to slidably
in last turning or like lathes and particularly to
support the carriage H for the model wheel I2
the drive for the swing frame and the controls
and the carriage l3 in which is journalled the
therefor. This application is a continuation-in
shaft M for the cutter head IS. The carriage
part of our co-pending application, Serial No. 5 I3 also supports the motor l6 connected to the
424,742, ?led December 29, 1941, which has now
shaft 14 by belting H to drive the cutter head.
matured into Letters Patent No. 2,354,689, dated
The lathe is conventional in that the carriages
August 1, 1944.
"I I and 13 are interconnected by adjustable link
‘ In such lathes, the swing frame rotatably sup
age so that equal, greater, or lesser movement of
ports the model and the block to be‘turned and 10 the carriage ll results on movement of the car
the drive for the model and block includes shafts
riage I3. As the‘ linkage by which such "grad
and belting from the source of power common
ing” is accomplished is conventional, we have
to other lathe drives. Disadvantages of such a
shown only‘the lever 18 fulcrumed as at [9 as
drive relate both to economy in operation and
indicative of such mechanism.
ef?ciency in use.
15
The carriages II and‘ I3 are driven by a motor
In accordance with our invention, we provide
20 having a belted connection 2| with a worm
the swing‘frame with a drive consisting of an
22 journalled in the frame 5. The worm .22
electric motor mounted on the swing frame driv
meshes with a gear 23 on a shaft 24 journalled
ing the rotatable supports for the model and the
in the frame 5 and which has a, gear 25 meshing
work to be turned through any suitable gear re 20 with a rack 26 carried by the carriage l3 (see
duction unit. We provide control means to close
Fig. 2).
‘
'
l
the circuit to the motor when the swing frame
The swing frame 8 has conventional rotatable
is swung between predetermined inoperative po
model supports 21 and 28 and similar rotatable
sitions close to or remote from the axis of the
supports 2'9 and 30 to support the work to be
model wheel.
turned. The supports 21 and 29 include gears
This control includes a brake operable when
3| and 32 meshing with gears 33 and 34 on the
ever the swing frame is in its outward inopera
drive shaft 35 journalled in the swing frame 8.
tive position to stop the rotation of the motor
In accordance with our present invention, we
and the rotatable supports for the model and
mount an electric motor 36 on the swing frame
the work to be turned when the power source 30 8, the circuit 31 to which includes a switch 38
is disconnected therefrom.
mounted on the overhead support ‘I. The drive
Our invention makes possible a simple and com
for the shaft 35 may conveniently consist of a
pact swing frame drive ensuring accuracy of work,
worm 39, the pulley 40 of which is connected to
economy in operation and contributes both to
the motor‘ pulley 4| by a belt 42. The worm 39
simplicity and economy in the construction and 35 meshes with a gear 43 fast on the drive shaft 35.
operation of lathes in accordance with our in
When the lathe is in use, the rotating model
vention.
supported in the swing frame 8 engages with the
In the accompanying drawings, we have illus
advancing model wheel l2 thereby causing the
trated our invention as embodied in a last turn
work to be turned to be spaced correspondingly
ing lathe. While the details of construction of 40 with respect to the advancing cutter head l5 so
the lathe itself is unimportant to the present in
that the work will be shaped similarly to the
vention, su?icient detail has been shown to per
model. It has been the practice to provide a
mit the novel features and advantages of our in
weight to control the swinging of the swing frame
vention to be readily understood.
to ensure the constant contact of the model with
45 the model wheel.
In the drawings:
Fig. 1 is a fragmentary front view of alast
In accordance with our invention, we control
turning lathe in accordance with our invention.
the swinging of the frame 8 by connecting the
Fig. 2 shows the lathe of Fig. 1 in end view,
bottom of the frame 8 to a crank 44 journalled in
and
the lathe frame by a link 45. The crank shaft
Fig. 3 is a fragmentary top plan view of the 50 46 has a pair of collars 41 to which the vweight
lathe.
4B is eccentrically pivoted so that its in?uence on
The lathe shown in the drawings consists of a
the swing frame is constant as the swing frame
bed 5 supported in a frame establishing lugs 6
8 swings towards or away from the vertical.
and an overhead support ‘I to which the swing
On the overhead support ‘I, we mount a guide
65 49 to slidably receive one end of the control mem
frame 8 is pivotally connected as at 9.
2,411,135
3
4
her 50, the other end of which is pivotally con
nected as at 5| to the swing frame 8 above the
motor 36. The member 50 controls the switch
38. As here shown, the switch 38 has a control
arm 52 disposed to be actuated by either of the
frame and slidably supported by said ?rst frame,
cam surfaces 53 with which the control member
50 is formed. Preferably, the cam surfaces 53‘
are spaced'to actuate the switch 38 to open the
circuit to the motor 36 when the swing frame is
said switch control arm having portions engage
able with said switch arm to open said switch
when said second frame is swung outwardly into
a predetermined inoperative position'and to close
said switch when swung inwardly into a prede
terminejd operative position, and abrake shoe
supported by said switchlcontrol arm to engage
with said driving means when said second frame
in predetermined inoperative position closely ad‘-' 10 isin said inoperative position.
jacent or remote from the model wheel 12 and
the cutter head l5.
2. In a lathe for turning lasts or the like from
blocks to correspond to a. model, a ?rst frame, a
second frame pivotally connected to said ?rst
frame to swing outwardly and inwardly in de
disposed ?ange 56. We attach a brake element 15 sired relation thereto, rotatable model and block
supporting means carried by said second frame,
51 to the flange 56 by bo1ts‘58 with the brake
driving means to rotate said supporting means
element 5'! being resiliently backed by springs
carried by said second frame, an electric motor
59. The brake element is disposed to engage
supported on said second frame, a belted con
with the motor pulley 4 I :when the swing frame 8
is swung into its outward inoperative position to 20 nection between said »motor and said driving
means, a circuit to said motor including a switch
brake the drive for the model and the work‘when
mounted on said ?rst frame including an arm, a,
the circuit 31 to the motor 36 is opened.
switch control arm ,pivotally connected to said
By this construction, we provide for increased
second frame and slidably supported by said
efficiency and economy in the operation of lathes.
This is due to the use of a separate motor mount 25 ?rst frame, said control arm having spaced por
tions engageable with said switch arm to open
ed on the swing frame, the controls therefor, and
and close said switch when said second arm is
the mounting of the weight to control thevswing'
Adjustably, clamped as at '54 ,'to the control
member 50 is a bracket 55 having an outwardly
frame so that its effect is always constant.
What we therefore claim and desire to secure
by Letters Patent is:
_
,
,
‘1. In a lathe for turning lasts, or the like from
blocks to correspond to a model, a first‘ frame,
swung into an outward inoperative position or an
inward operative position, and a brake shoe,
so means carried by said control arm to support
said brake shoe in a position to engage with said
connection when said second frame is in its in
a second frame pivotally connected to said ?rst
operative position.
frame to swing outwardly and inwardly in de
3. The lathe of claim 2 in which the brake
shoe supporting means comprises a support slid
sired relation thereto, rotatable model and block
supporting means carried by said second'frame,
'
'
ably anchored to the control arm to permit the
relation of‘ the brake shoe to the connection to
driving means to rotate said supporting means
be adjusted.
'
' .
carried by said second frame, an electric motor
supported on said second frame operatively con
4-. The lathe of claim 2 in which the brake shoe
nected to said second frame, a circuit to said 40 is resiliently connected to the brake shoe sup
porting means.
‘
‘
motor including a switch mounted on said ?rst
ALTON D. LANDERS.‘
frame, said switch including an arm, a switch
control arm pivotally connected to said second
FRED H. LINDSAY. '
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