Feb. 28, 1928.
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`c. A. HIRTH
`SHAFT COUPLING
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`' 1,660,792 ’
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`Filed Sept. 27. 1926
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`SONY Exhibit 1024
`SONY Exhibit 1024
`SONY v. FUJI
`SONY v. FUJI
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`Feb. 28, 1928.
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`1,660,792
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`A. HIRT
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`Patented Feb. 28, 1928.
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`" marries gems Mme? series.
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`CARL ALBERT HIRTH, 0F NONNENHORiv—on—THE—B'onnnsnng, GERMANY.
`, SHAFT COUPLING.
`Application filed septeinber 27, 1926, Serial No.i138,052, and in Germany December 23, 1924.,
`
`My invent-ion relates to shaft couplings,
`more especially of the kind comprising sym-
`metrical serrations with teeth the faces of
`which are inclined to theaXis of the shafts
`and the crest and root lines of which are
`arranged radially t0 the axis Of the shafts:
`It is an object of my invention to provrde
`I a coupling of the kind described devoid of
`allintermediate parts, the ends of the shafts,
`'10
`engaging directly so that they are coupled
`more accurately and with higher efiicrency.
`In the drawings aflixed to this spe01fica-
`tion and forming part thereof severalcou- .
`,plings embodying my invention are illus-
`trated diagrammatically by way of example.
`In the drawings
`Figs. 1, 2, 3,‘and 5 are partly sectional
`elevations illustrating shafts of equal diam-‘
`eter, coupled together, While
`.
`Fig. 4 is a similar view showing coupled
`, shafts of different diameters.
`,
`Figure 6
`is
`a partial.
`sectional view
`through theshaft coupling showmg a slight
`.modification in the coupling means.
`In all figures, c and Z) are the shafts and
`c are the serrations.
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`'2, 3, and 5,
`Referring first to Figs. 1,
`identical serrations ‘c are machined or other-
`wise made in the ends of the shafts to be
`coupled. The faces of each tooth converge
`toward the axis of the shaft and the crests
`and the roots of the serrations are arranged-
`on conical faces which intersect in the axis
`of the shafts. With good workmanship the
`contact of such a coupling is excellent and
`at the same time the shafts are centered due
`to the wedge-like shape of the teeth.
`Except in the modification illustrated in ,
`Fig. 4 the ends of the shafts are. provided
`with split rings (Z inserted in grooves near
`the ends of the shaft.
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`In the modification illustrated in Fig. 1,
`flanges e are” placed over the rings and axial
`thrust is exerted on these flanges by screws
`f. Any number of such screws may be. pro-.
`vid-ed.
`,
`-
`Screws require a comparatively large d1-
`. ameter of the flanges, and in order totover— ,
`come this drawback, the screws can be re-
`placed by a threaded sleeve 9 as shown in
`Fig. 2 which. engages opposite threadsuat
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`25
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`03 3:!
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`the inner ends of two rings e’, 62 which ‘
`are placed over the rings d.
`A similar construction is shownin Fig.
`6 but here only-one ring d’ is provided in‘
`a groove of the shaft 2), the other ring being
`replaced by a threaded ring 63 engaging a
`groove in the shaft (2 on which ring 63 ,is-
`secured a sleeve 6* which engages behind the >
`ringd'. This construction dispenses with a
`separate sleeve 9 and with the necessity of
`prov1d1ng opposite threads on the sleeves
`e’ andez,‘ as in Fig. 2.
`A form in whichopposite threads are, also '
`65;
`eliminated is shown: in Fig. 3.‘ It substan4
`tially resembles-the fOrin shown in Fig.,,‘6
`but the inner sleeve 65, instead of being in- .
`serted in a grooveof the shaft a, engages?
`a. split ring d inserted in a. grooVe at the
`7O
`end of the shaft a. The corresponding
`sleeve 6“. resembles the ‘sleeve'e4 in Fig. ‘6;
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`Fig. 5 illustrates a coupling’in which the
`shaft 6 has a. smaller diameter than the
`Shaft a. The serrations a are constructed as
`above described and flanges" e7 and 63, are
`placed over the Split rings d in both shafts '
`and are connected with any desired number
`'of screws as described with reference to Fig.
`1. Obviously constructions. as described
`with reference to the other figures may, also .
`be provided.
`"
`'
`I wish it'vto be understood thatI do not ,
`desire tobe limited to the exact details of '
`constrnction‘ shown and described for
`ob"—
`vious modifications will occur to a persOn
`skilled in the art.
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`_
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`' I, claim 2——
`1. A shaft coupling’comprisinga pair of '
`shaft sections having central recesses in their,
`meeting ends and prov1ded at their peri‘ph-’_ 90
`eral portions with annular series of teeth eX-H -
`tending endwise from the shaft sections for
`interfitting engagement. when the shaft sec—
`tions. are brought together, said teeth cen-
`structed with their inner faces converging
`and the. roots and crests of the teeth pro-
`viding elements of cones whose v-ertices lie
`in a common point onthe axis of each/shaft .
`section.
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`2. A shaft, coupling comprising a pairdf
`shaft sections of like construction adapted to
`abut, at their ends, each shaft section having
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`1,660,792
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`a central opening in its end and an annular
`series of teethabout' the opening and ex—
`tending lengthwise of the. shaft section, the
`teeth having converging faces and, having
`- 5 their roots and crests comprisino elements,
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`» of cones Whose vertices lie on'tlbie axis of
`the shaft section, and means for adju’stably
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`drawing said shaft sections together in end-
`wise engagement with the teeth in intel‘fit—
`ting relation for taking up wear on the cone
`portions of the teeth and automatically cen-
`tering the shaft sections.
`'
`In testimony whereof}. affix my signature.
`‘CARL ALBERT HIRTH.
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`10"
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