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Патент USA US2128646

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Aug. 30, 1938.
Filed April 1, 1937
Charles Huenllch
ai, 1
Patented Aug. 30, 1938
vCharles Huenlich, Bloomfield, N. J., assignor'to
Thomas A. Edison, Incorporated, West Orange,
N. J., a corporation of New Jersey
ApplicationApril 1, 1937, Serial No. 134,292
(Cl- 82-1.1)
This invention relates to machines for shaving ing drawing forming part of the specification and
in Which
sound records, and more particularly to the stop
8 Claims.
ping and ejecting of the record after the com
pletion of the shaving operation.
Sound record cylinders are made of Wax-like
material having a surface upon which a sound
track has been orv may be recorded. When such
records are used in connection with business
phonographs, it is customary to resurface the
10 outer portion bearing the sound track. Such a
cylinder is commonly referred to as a “used” rec
ord, but it is also the practice to provide a new
cylinder with a smooth surface to be recorded
upon. Therefore, the term “record” as used
15 herein contemplates a wax or other tablet hav
ing a surface` either adapted to receive and bear
or already bearing a sound track.
The resurfacing operation requires a shavingl
knife mounted on a carriage and adapted to
20 traverse a rotatably mounted record cylinder and
to be held in operative relation with respect
thereto. The cylinder is supported on a vcylin
drical rotatable mandrel, usually motor driven,
and the shaving knife is set-to take a cut of d-e
sired depth as the cylinder is rotated. To ex
2 Ol pedite the shaving operation the cylinder is ro
tated at relatively high speed, i. e., approximately
1700 revolutions per minute and rotating at that
speed develops a substantial momentum. When
the shaving knife has traversed the record and
the motor is shut off this momentum keeps the
cylinder rotating for an appreciable time. It is,
of course, not approved practice to effect the
ejection of the record while rotating so that it
therefore becomes necessary for the person per
forming the shaving' operation to waituntil the
record has come to substantially a state of rest
with consequent loss of time.
It is an object of the vpresent invention to
provide an improved construction for braking a
record support and for detaching a record there
Another object is to provide a simplified brak
ing means for expeditiously overcoming the mo
mentum of the cylinder at the completion of the
45 shaving operation and in advance of its ejection.
Another object of the invention is the provision
o-f ejecting means which is associated with the
braking means in such timedv relation with re
spect to the braking action that the ejection
of the cylinder is initiated yimmediately upon the
>stopping of the rotation thereof.
Another object is providing a construction
which performs the braking and ejecting op-era
55 tions by the single manipulation of a suitable
member co-ntrolling these operations.
Other objects and features of the invention
will more fully appear from the following de
scription and append-ed claims.
The invention is illustrated in the accompany
Figure l is a fragmentary plan view of 'a con
ventional form of a record shaving machine, to
which my invention has been applied;
Figure la is a diagrammatical view of the elec
tric drive 'motor` and the controlling 'circuit
Figure 2 is a cross `sectional view taken sub
stantially along the line 2-2 of Figure 1; and-
Figure 3 is a fragmentary elevational view
taken along the line 3-3 of Figure 1.
Referring to Figure l of the accompanying
drawing, a well known form of shaving machine
is conventionally illustrated, the same comprising
a base’plate l supported by the top portion of
a cabinet C which is partly shown in Figures 1
and 2. Projecting upwardly from plate I vare left
and right-hand end standards 2 and 3, respec
tively; also left-hand standard 4 which serves as 20
a bearing for the shaft 5 of the mandrel 6. The
standard 4 is provided with an oversized hole 4’
to accommodate the shaft 5, and to prevent dis
placement of said shaft when the gate 9 (later
described) is opened, a collar l2 is secured to said 25
shaft at a point adjacent to the left side of said
The shaft 5 is supported at its left-hand end
by a conically pointed stud 1 adapted to register
with a recess 5’ of the shaft 5, thus providing a 30
thrust bearing for said shaft end. The right
hand end of the shaft 5 is similarly journalled by
means of a conical stud 8 engaging with recess
5" in said shaft. However, the conical stud 8 is
not secured in a stationary standard but is 35
mounted in a swinging end-gate 9 pivoted at I8
to a boss 3’ provided on the standard 3. The gate
9 is closed, as illustrated in Figure l, by a clock
wise rotation about its pivot until its forward
extremity impinges against the right-hand ex 40
tremity of a guide-rail 21. To retain the gate 9 in
closed position there is provided a latch member
9' which is pivotally secured by means of its
shank to a vertical post on plate l and is adapted
to swivel in front of the guide rail 21. As this
arrangement is well known in the art, as for eX
ample, being fully disclosed in Patent No. 465,972,
granted December 29, 1891, on an application of
Thomas A. Edison, it is only conventionally illus
trated herein.
Suffice it to say that when the
gate 9 is moved to.closed position, the mandrel
6 is wholly supported by the studs 1 and 8, the
latter providing axial alignmentk and also pre
venting appreciable end play of the shaft 5. In
this position the mandrel 6 is in'true parallel re 55
lation with the guide-rail 21 and thus the record e
may be rotated for resurfacing.
'I'he rotation of the shaft 5 is accomplished by
means of a motor M, diagrammatically shown in
Figure la, having a belt I9 passing over a pulley
26 on said shaft. For controlling the motor cir
cuit I5 there is provided a switch I6, the switch
ing elements of which are controlled by push but
tons I'I-and I8 to open and'close the circuit I5,
thus stopping and starting the motor, respective
ally mounted upon the stud 3'! and adapted to be
rocked clockwise with the movement of the oper
ating arm 35. The brake> member 45 is adjacent to
the standard 4, and its upper extremity is curved
to form a right angle portion 4D’ having a recess
w in the end thereof adapted to receive a friction
member or brake-shoe 46. The brake-shoe 46 is
adjustably mounted in a projection- 22 »formed
arranged in longitudinal alignment with the end
A knife bar 25 carries a knife 26, said bar being
upon an arm 2l of a tool carriage 2D.
This car
riage is slidably and rotatably mounted on a car
riage rod 23 disposed behind and in parallel rela
tion with the mandrel 6, said rod being terminal
ly secured to the standards 2 and 3. The arm 2|
of the carriage 20 is semi-circular in side eleva
15 tion and is provided with a weight or hand piece
24. formed integrally therewith. The under sur
face of said hand piece 24 is smooth and normally
is in contact with the top surface of the guide
rail 121.
During the shavingoperationthe carriage arm
2| is moved longitudinally of the record A from
right to left by means of a feed screw not shown
but well understood in the art. A pulley 3|, se
cured to the shaft 5 by means of avbelt 30, ro
25 tates _the feed screw, which when so rotated, may
be engaged by a feed nut 32 carried by an exten
sion 33 of the carriage 20. It will be understood
that the feed nut is arranged to engage the feed
screw only when the arm 2I occupies its normal
30 resting Nposition onthe guide-rail 21 and to dis
engage the same when said arm is tilted upward
The knife bar 25 may be of any approved type
and when the arm 2l is resting upon the guide
3.5 rail 2l, the knife will engage the surface of the
record A to the desired depth. As the knife'bar
mounting is well understood in the art and forms
no part of the present invention it is unnecessary
to describe the same in detail.
The apparatus thus far described is wholly con
ventional and forms a typical construction to
which the present invention maybe applied. As
previously stated, my invention contemplates a
combined braking and` ejecting mechanism for
ñrst overcoming the angular momentum of and
stopping the mandrel and, as incidental thereto,
ejecting the record therefrom, the same being ac
complished by the manipulation of a single mem
Located at the left hand side ofthe base plate
i is a combined braking. and ejecting arm 35
having a hub >36 secured-by a set screw 36’ to a
stud pin 31 supported at one yend by the rail. 27
and at the other end in a'bearing formed in the
55 standard-4. An extension arm 38, formed inte
grally with the hub 36, is provided Vat its upper
extremity with a pivoted ejecting member 39, nor
mally spaced a short distance from the left end
of the record A but longitudinally `aligned there
60 with .so as to impinge thereagainst when moved
rightwardly to eject the record. To hold the
ejecting member 39 in its normal position the
arm 35 and thus arm 38 is biased by Vmeans of
a torsion spring 4I coiled about Vthehub 36 and
65 terminally secured to the arm 35 and to the base
plate I. By‘this'arrangement the spring 4I -nor
mally retains theV arm 35 resting against the base
plate I _' (see Figure .3). A lug 42 projecting from
the hub 36, when brought intocontact with the
adjacent `edgeof said base plate, limits the for
ward movement >of said `arm when moved by the
operator in a clockwise direction.
For overcoming the angular momentum of the
mandrel 6 previous to ejecting the record, I pro
75, vide a yielding brake member 45, which is pivot
6’ of the mandrel 6, and is adapted to be moved
into engagement therewith when the brake mem
ber Y45 is moved in a clockwise direction.
yieldingly mount the brake member 45, there is
provided upon said member a laterally extending
pin 47 adapted to coact with a similarly projecting
pin 48 extending from the side of the arm 38 of 15
the >hub member 36. These pins are substantially
the same radial distance from the stud pin 31 and
are adapted to be held normally in contact with
each other by means of a torsion 'spring 49 wound
about lthe hub 36 and having its ends oppositely 20
resting against said pins, as clearly seen in Figures
2 and 3. In this manner the brake member 45 is
resiliently connected to the arm 35, and thus
movement of said arm will impart a similar move
ment to the brake member 45. However, it will be 25
understood that during the movement of the arm
35thebrake member 45 will, by virtue of its brake
shoe 46, contact with the end 6’ of the mandrel 6
prior to the member 39'contacting the adjacent
endof the record A, but continued forward move 30
ment of arm 38 and member 39 is permitted by the
resilient connection between arm 35 and member
45. Upon such occurrence, the end of the tor
sional spring 49 abutting against the pin 48 of the
arm 38 will be carried forward by said pin, and as 35
a result greater torsional strain will be imparted
to the member 45 to thereby cause the brake-shoe
46 to apply greater friction upon the end 6’ of the
mandrel 6.
l `
The function of the mechanism just described
has been previously explained; however, since the
utility of said mechanism is subject to a sequence
of operations to accomplish the main purpose of
the machine, a review of certain functions and
operations will now be in order.
Assuming a record A, on the mandrel 6, has
just been shaved and that said mandrel is still
being rotated by the motor M but that it is now
desired to remove said record from the machine.
The first step in such operation will be to cause a
stoppage of the mandrel driving means by press
ing the button I 'I of the switch I 6 to thereby open
the circuit I5 which operates the motor M._ How
ever, because of the high velocity to which the r0
tary parts, including the record A, have been sub
jected, it will be understood that normally rota
tion thereof will continue for an appreciable time
after stopping the motor and that this would ordi
narily delay the subsequent ejecting of the record.
However, with my present invention, the operator 60
may immediately after the manipulation of switch `
I6, and while the record is still rotating at high
speed-proceed with the operation required to ef
fect ejection-thereof by moving the arm 35 clock
wise about its pivot stud 3'I. The initial move
ment of the arm 35 will cause the arm 38 to carry
the ejecting member 39 toward the end of the
record A, but before said member 39 contacts
therewith,` the shoe 46 of the brake member 45,
which is normally closer tothe end 6’ of the man
drel 6, will have'come into frictional engagement
with said mandrel end. Upon further movement
of the arm 35 increased friction will be applied
upon the end of the mandrel due to the torsional
effect of the spring-49, which _is now being con 75
strained by the pin 48 as arm 38 is moved for
wardly by the arm 35. At this stage in the move
ment of the arm 35, the ejecting member 39 con
tacts the record, but incidentally the frictional
contact of the brake-shoe ¿l5 upon the end of the
mandrel will have become sufficiently 'great to
overcome its momentum and stop the same, and
thus further movement of said arm 35 will cause
said ejecting member 39 to force the record out
10 wardly Without damage thereto.
The lug ft2 limits the forward stroke of the
ejecting member 39, .and said record when ejected
will assume a position wherein its right-hand end
will rest adjacent the end-gate Sl, as shown by the
combination with a record support and means
for rotating the same, o-f a brake member, an
ejector member, a mounting for cooperatively
positioning said members with respect to said
support and a record carried thereby, means for
applying said brake member to said support, and
means for engaging said ejector member with
the end of the record, said means functioning in.
cidentally and in the sequence of the braking
action preceding the ejecting action, whereby the 10
rotation of said record is substantially stopped
before the ejection thereof.
4. In. a machine for shaving sound records, the
combination with a record support and means for
rotating the same, of a brake member, an ejector 15
dash and dot line in Figure l. To protect said
end of the record from damage by too forcefuly member, a mounting for cooperatively position
ejection against the end-gate 9, there is provided ing said members with respect to said support
and a record carried thereby, said mounting com
a yielding spring member 50. This member is se
cured to and centrally of the gate 9 by means of prising an actuating lever positively connected
to said ejector member and yieldingly connected 20
20 the screws 5I and extends downwardly as shown
in dash. and dot lines in Figure 2. Ordinarily, the to said brake member, means for normally hold
ejecting stroke of the member 35 is such as to ing said members in an, inoperative position, and
move the end of the record in close proximity to means for moving said members into operative
the spring member 5U but if the record has been position, said braking member being ñrst brought
intof engagement and yieldingly held in contact 25
25 ejected forcefully, it will be yieldingly arrested by
said member 50 without ill effects.
It is always preferable to eject a reco-rd before
the end-gate -il is opened; however, as in the
present invention, by applying a strong braking
30 action prior to the ejection action, no serious
harm is done to the record if the end-gate should
be opened immediately following the manipula
tion of the switch I6. Upon the release of the
arm 35 by the operator the spring 4i returns
35 the same to normal position and thus: restores
the associated parts co-ntrolled by said arm to
inoperative position.
While the form of mechanism herein disclosed
is admirably adapted to fulfill the` objects of the
40 invention, I do not wish tov confine myself to
the same, `since the invention maybe embodied
in various forms within the scope of they appended
' claims.
What is claimed is:
1. In a machine for shaving sound records,
the combination with a record support and means
for rotating the same, of a brake member, an
ejector member, a mounting for cooperatively
positioning said members with respect to said
support and a record carried thereby, an actuat
ing lever for said members, and means for apply
ing said brake member toI said support and said
ejector member to the end of the record, said
operations being incidental to the actuation of
55 said lever and in the sequence of the braking
action preceding the ejecting action, whereby
the rotation of said record is substantially stopped
before the ejection thereof.
2. In a machine for shaving sound records, the
60 combination with a record support and means for
rotating the same, of a brake member including
a shoe, an ejector member including a pivoted
element, an actuating lever for said members,
resilient means for connecting said members, and
65 means for applying said brake shoe to said sup
port and said ejector element to the end of the
record, said operations being incidental and ac
complished by a. single manipulatio-nî of said
lever, the braking action being in advance of
the ejecting action but in closely timed sequence,
70 whereby the rotation of the record is stopped
before the ejection thereof.
3. In a machine for shaving sound records, the
with said support during the advancement of
said ejector member into Contact with said record,
the braking power thus applied being sufficient to
insure the substantial stoppage o-f the: rotation
of the record before the ejection thereof.
5. In a machine for shaving sound records,
the combination of a record support, a motor for
rotating said support, meansfor controlling said
motor, and a braking'and ejecting mechanism
comprising a brake member, an ejector member, 35
resilient means` connecting said members, an ac
tuating lever, positive means' connecting said
lever with said ejector member, a mounting for
cooperatively positioning said members with re
spect to said support and a record carried there 40
by, and means for normally holding said mem
bers in inoperative position, said actuating lever,
when operated upon the stoppage o-f said motor,
effecting the application of a braking action to
said support and record ejection.
6. In a machine. having a rotatable support
for cylindrical records, means for rotating said
support, ejecting means operable to` impart to a
record when the same is operatively positioned
on the support, movement longitudinally of the 50
support thereby to free the record from opera
tive engagement with the support, and meansI
actuated by said ejecting means for stopping the
rotation of said support.
7. In a machine having a rotatable support 55
for cylindrical records, means for rotating said
support, ejecting means operable to impart to a
record when operatively positioned on the sup
port, movement longitudinally of theI support
thereby to free the record from operative en 60
gagement with the support, and a braking de
vice effective to stop the rotation of said sup
port upon the actuation of said ejecting means.
8. In a machine having a rotatable support
for cylindrical records, means; for- rotating said 65
support, vejecting means operable to impart to
a record when operatively positioned on said
support, movement longitudinally of the support>
thereby to free the record from the support, and'
means for stopping the rotation of said support,
said ejecting means and stopping means being
interdependent in operation.
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