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Патент USA US2105702

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jam. 18, 1938.
2,105,702
H. J. ‘SCHOLTZE
FLEXIBLE SHAFT COUPLING
Filed lvAug . 6 , 1934
‘
,
INVENTOR.
HEKM?NJISC/I’OLTZE.
BY
' -
6é g
ATTbRNEY
Patented Jan. 18, 1938’ I
2,105,702 '
UNITED‘ STATES
PATENT osrics
2,105,702
7
FLEXIBLE snam' COUPLING
Herman J. Scholtze, Berkeley. Calif.
Application‘ August 6. 1934, Serial No. 738,594.
30laims. (01. 54-14)
The invention relates to a means of coupling
Arranged for positioning between the ?anges
together a pair of shafts so as to permit coopera
are a pair of like coupling members 8 and 8 here
shown in the form of rings or discs and designed
tion notwithstanding misalignment or variation
in positional relationship of the shafts.
An object of the invention is to provide a cou- _
pling means of the character described which is
effective not only for compensating for various
to be attached'to the ?anges 2 and 3 respectively
by means of screws H. The central opening I: 5
of the discs is preferably'of greater diameter
than the openings It of the ?anges so that should
of the shafts, but will ' the shaft ends extend beyond the inner faces of
effectively
withstand
axial
and
torsional
strains
10 in all directions.
the ?anges they will not interfere with the discs.
'
'
Means are provided on the adjacent faces of 10
Another object of the invention is to provide a
the
discs for e?’ecting with the assistance of a
coupling of the character described which is
effective for absorbing relatively'heavy strains as ‘ layer or lining of ?exible material interposed
an interlocking of the discs, both
aforesaid, yet at the same time will possess and therebetween,
as against axial and rotative displacement with
'~ types of misalignment
maintain over a long period of use a maximum
?exibility and cushioning "quality.
A further object of the invention is to provide a
coupling of the character described which is ex
tremely simple in construction, may be easily
.20 installed or disconnected, will afford u'se almost
inde?nitely without requiring a replacement of
parts, and insures an evendistribution over the
entire coupling of the various strains to which
the coupling may be subjected. >
-
The invention possesses other objects and fea
tures of advantage, some of which, with the fore
going, will be set forth in the following descrip
respect to one'another, yet affording against a 15
gradually increasing resilient resistance a cer
tain amount of said displacement, either axial,
rotative or both, as the nature of the operation
of the shafts necessitate. As here shown said
means comprises coacting male and female ele- 20
ments provided on saidlfaces and arranged to
engage one with the other, the male elements be
ing in the form of projections "5 while‘ the female
elements are in the form of recesses l1. Each
. disc has a plurality of the projections and re- 25
cesses, and moreover the projections and recesses
are designed to extend radially of the discs with
tion of the preferred form of the invention which _ the width of the elementsincreasing as the diam
is illustrated in the drawing accompanying and
forming part of the specification, It is to be eter of the discs grow larger. Preferably the ele- '
ments are so designed that adjacent projections 31)
understood, however, that variations in the show
the intervening recess thereby permitting .
ing made by the said drawing and description de?ne
the
inclusion
of a maximum number of elements
may be adopted within the scope of the vinven-_ of given size for
the discs.
,
tion as set forth in the claims.
As will be clear from Figure 3, each projection,
35
Referring to said drawing:
in respect to its area circumferentially of the disc, 35
Figure 1 is a longitudinal sectional view of the is formed of dove-tail shape, that is ‘of increasing
coupling.
v
width from the base to‘ the outer extremityy'and
Figure 2 is a transverse sectional view of the conversely each recess is formed of correspond
coupling taken on the line 2-2 of Figure 1.
ingly' decreasing width from ‘the closed to the
40
Figure 3 is a fragmentary sectional view of the open
side. Since the projections are in the pres- 4Q
coupling talsen on the curved line 3—3 of Fig
ent embodiment formed as fixed parts of the
discs, in order that the‘v projections of the one disc
In the embodiment of the invention‘ illustrated may enter the recesses of the other disc, the
in the drawing, the coupling is incorporated with widest portion of each projection is somewhat
ure 2.
’
.
=
I
-
a set of coupling ?anges 2 and 3 arranged to re
ceive and be secured to the ends of the shafts to
be coupled together. The mode of attachment oi
vless than the narrowest portion of the recess ar-_ 45
the coupling ?anges with the shafts will of course
vary in accordance with the function and mode
of operation of the shafts, but as here shown the
a liner or layer I 8 of a ?exible material preferably
of a nonmetallic ?brous nature. and as will be
most clear from Figures 2 and 3, the liner is of 50
ranged to be engaged thereby.
Arranged for positioning between the discs is
attachment is arranged to be effected through .7 the same length as the projections and dad.
means including bolts 4 and keyways 5 provided
on the ?anges and by which the latter may be
signed to extend completely around the coupling
members so as to form a continuous spacer be
?xed to the shafts against axial and rotative,» tween the adjacent surfaces of the projections
displacement.
and recesses while the projections and recesses l
.2
are operatively interengaged.
2,105,702
Preferably the
liner is of ‘such thickness that when the pro-‘
jectionsr and recesses are operatively engaged as
aforesaid, an even spacing will be provided be
tween the di?ferent adjacent surfaces.’ Insertion
of the liner into position between the discs, is
best e?ected after the discs have been brought to
gether with the projections inserted in the re
cesses, the liner being then slipped edgewise
'10 along the periphery of the discs into- the space
between the opposing surfaces of the projections
and recesses. If desired the layer It may be in
the form of a ?ller of rubber composition or the
like, placed into the space aforesaid and vul
15 canized therein.
It will now be clear that once the members have
been assembled with the liner contained between
the opposing surfaces of the projections and re?
1. A coupling of the character described com
prising a pair of annular members having on op
posed sides thereof dovetall extended and re
cessed portions nested within the other, and a
continuous liner of ?exible material interposed
betweenlsaid portions said dovetailed extended
portions and recessed portions having compara
tively ?at tops and bottoms respectively, the dis
tance across the tops of the dovetailed portions
.de?ning the maximum width 0 the dovetailed 10
portions and being substantially he same as the
distance between the tops of adjacent dovetailed
portions which comprises the minimum width 0
the dovetailed receptacles
- '
2. A coupling of the character described com 15
prising a pair of axially aligned members having \
on opposed adjacent sides thereof extended and
recessed portions, the extended portion having
cesses,. axial separation of the members will be sides inclined outwardly axially of the connected 20
20 resiliently resisted-as effectively as willv be the ' member and the recessed portion having sides
axial compression thereof. Likewise, the same inclined inwardly axially of the connected mem
ber and arranged for a dovetail connection with
resistance will be set up against rotative displace
ment of the one member relative to the other in said first sides, and a'continuous‘liner of ?exible‘
one direction as well as in the other, the resistance rnaterial interposed between said sides and look
was
being smooth and'even at all times, but increas ,ing the members against 'axial separation, the
ingly rigid‘ as the forces applied to the coupling maximum dimensions of width of said extended
become greater. It should also be noted that portions being substantially the same as the min
since the portions of the members coacting for imum dimension of width of the. recessed portions.
3. A coupling of the character-described com
assuming the stresses, are located completely
around the discs, a most e?ective distribution of prising a pair of annular axially aligned members
L the strains on the coupling will result.
' A further feature of importance of the inven
tion is the readiness with which the coupling may
beins'talled or taken down. Thus to apply the
5 same, it is merely necessary to insert the assem
bled discs with the liner, between the-flanges
and then by means of the screws l2 secure the
parts together. vIn this connection it may be
noted that ordinarily neither of the shafts will
40 protrude from the ?anges to thereby interfere
with the members. To remove the coupling mem
bers it is merely necessary to release the screws
having on adjacent sides thdreof alternate ex
tended and recessed portions, the extended por
tions of each member being inserted in but spaced
from the sides of the recessed portions . of the
other member, and a ?ller of ?exible material in
the space between the interengaged portions, said
extended portions being enlarged at points spaced
from their inner ends and saidrecess portions
being substantially correspondingly reduced at
points spaced from their inner ends the greatest 40
‘width-of each enlargement of each extended por- a“
tion being substantially the same as the smallest
width of said recessed portions, whereby the mem
l2 and slip the members ‘transversely from be
bers will be locked together againstseparation
tween the ?anges. Or, should it be merely de
'
when the filler is operatively disposed in the space
sirable
to
disconnect
the
coupling
without
re-I
45
moving same, it is only necessary to remove the
screws from but one of the members.
" I claim:
between the portions.
_
.
HERMAN J._ scHoL'rzn.
45, ..
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