US1814606A - Vibratory machine - Google Patents

Description

JulyflI l, I931. v R. 1-. NEWTON 0 VIBRATORY MACHINE Filed Nov. 22, 1929 ZSheets-Sheet l INVENTOR. flaky/'0 [MM/f0 ATTORNE July 14, 1931. R. T. NEWTON 1,814,606

VIBRATORY MACHINE Filed Nov. 22, 1929 2 Sheets-Sheet 2 INVENTOR. BY ffic'fiar fMgw/m @1470 &

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Patented July 14, 1931 j 1,s14,60e

PATENT oFmcE.

RICHARD T. NEWTON, OF NEW Y QRK, N, Y..

VIBRATORY MACHINE Application filed; November 22; 1929. serial No. 408,999.

This invention relates, generally, to vi-.

bratory machines; and the invention has reference, more particularly, to machines for performing vibratory. body massage for remedial or hygienic purposes.

Vibratory machines as heretofore generally' constructed have been somewhat unsatisfactory in use for the reason that whenever it is-desired to vary the length of stroke or the amplitude of vibration of such a machine during a treatment it is necessary to stop the machine before the ustment can be made, resulting in inconvenience to the user and the prolonging of the period necessary for treatment. Also, such machines commonly in use are rather complicated in structure and aretherefore usually expensive;

The principal object of: the present invention is-to-provide a novel: vibratory machine 5 which is adapted to have its amplitude of vibratiomreadily and easily variedwhile the machine is-running, therange oi. such varia tion extending from zero to any value desired upto the maximum-for which the particular machine'is designed.

The invention has for another object to provide a. Vibratory machine of the above character which is of simple andcheap-conlstruction as well as reliable in operationl.

Other objects of this invention, notat-t'his time more particularly enumerated, will? be clearly understood from the followingde taileddescription of the same.

The invention is clearly illustrated in the accompanying drawings, in which Fig. 1 is a plan view of the novel vi bratory machine ofthis invention; Y

Fig. 2' is a view in side elevation looking at the left side of the structure shown in Fig. 1' with parts of the supporting pedestal broken away; I

Fig. 3 is a sectional View taken along line 3 3of 1 with parts omitted-yand Fig. 4 is a part sectional" view taken along line 4.-l of Fig. 1.

Similar characters of reference are employed' in all of the hereinabove described views to indicate corresponding parts.

Referring now to the said drawings, the novel vibratory machine of this invention bracket 7 against'the bushingo and this buslring against the upper surface ofibase 2', thereby rigidly holding these members together in fiked relative positions.

A swivel motor base 8 is-positioned on top. of base 2 and has a\ vertical aper tuned hearing portion 10 which is swivelly'mounted' on the bushing 6. Motor base 8' is formed with a forwardly projecting tapered: portion. 11. terminating in a handle-12*which extends beyond the forward marginal; edge of base 2. This forward marginal edge of base 2 iscurved along a circular are having thelength ofaquadrant'of a'circle andthe vertical axis of stud 5' as a center and is provided with a. plurality of vertically extending serrations 13. j A catch 14 is pivotally'mounted'fon: a pin 15 carried'at the undersideof handle 12iand" has'a tongue 16' adapted to engage any one of the serrations 13. A compression spring 17. ispositioned between the underside of handle -12 and catch 14 andpresses this catch so that its tongue is urged intoia serration13, thereby locking handlea12 'andmotor base. 8 against relative turning movementabout' bushing 6 and with respect to base 2.

The rear portion of motorbase 8 istransversely enlarged toreceive andsupport an electric motor 18 which is secured tobase 8 as by screws 19. The armature shaft 21 o'fmotor. 18extendsin the direction of. the handle. 12 and the forward end portion of this shaft has the hub of crank 22 secured thereto as by set screws 23. The hub of crankv 22 is provided with an annular groove or recess 24 into which projects the forked upper end of a thrust plate 25. The lower end portion of thrust plate 25 is secured asbyscrews 26 to the hearing portion 10= of the motor base. Thrust plate absorbs the end thrust of armature shaft 21 and prevents end play of this shaft.

The crank pin 27 is formed eccentrically on crank 22 and projects through a central bearing aperture provided in a yoke 28 constituting an element of a universal joint or coupling. A screw 32 is threaded into the end of crank pin 27 and retains a washer against one side of yoke 28 thereby retaining this yoke upon the crank pin. The transverse oppositely extending trunnions formed on yoke 28 have hearings in a frame 30 which in turn is provided with vertical oppositely extending trunnions having hearings in the enlarged forked inner end of a connecting rod 31. The central vertical axis of the trunnions of frame 30 is substantially aligned at all times with the axis of stud 5 so that the swivel motor base 8 and motor 18 may be freely turned about the bushing 6 by means of handle 12, which turning movement merely causes the trunnions of frame 30 to turn withintheir bearings in the connecting rod 31 without appreciably moving the connecting rod. Inasmuch as the curved forward marginal edge of the base 2 has the length of a quadrant of a circle, the handle 12 may beturned through an angle of 90. or from itsposition illustrated in Fig. 1, wherein the connecting rod 31 is at right angles to crank 22 and shaft 21, to a position wherein this connecting rod is aligned with the crank 22.

The connecting rod 31 is illustrated as formed in halves which are secured together by screws 33. The outer end of connecting rod 31 is also forked and is pivotally connected to the trunnions of a vertical yoke 34 of a second universal joint. Yoke 34': is provided with a transverse bearing aperture through which a joint pin 35 extends. Joint pin 35 has its ends fixed in recesses provided in a transverse rocker arm 36. The universal joint comprising yoke 3 1 and pin 35 universally connects the outer end of .1 the connecting rod 31 to the rocker arm 36. This rocker arm 36 is formed midway of its length with a depending portion 37 having a central vertical bearing aperture extending therethrough. Depending portion 37 rests upon the bracket 7 and is rotatably mounted on a bolt 38 which extends through the aperture in this portion and is threaded through an aperture in bracket 7. Yokes 39 are attached to the ends of the roc er arm 36 31 at right angles to the crank 22 as illustrated in Fig. 1, the plane of motion of a point on crank pin 27 coincides with the longitudinal axis of the connecting rod, thereby causing the connecting rod to impart a maximum oscillatory or vibratory movement to the rocker arm, whereas when the connecting rod is aligned with the axis of crank 22 and the motor shaft, the plane of motion of a point on crank pin 27 will be at right angles to the longitudinal axis of the connecting rod, resulting in a mere oscillatory movement of the inner end of the connecting rod without moving the rocker arm. At any point intermediate these two extreme positions, the crank 22 will impart vibratory motion to the rocker arm of an amplitude depending upon the angle which the connecting rod makes with the crank axis. As this angle is reduced from 90 the amplitude of vibration of the rocker arm decreases proportionally.

This method of varying the amplitude of vibration of the rocker arm renders it a simple matter to change from one amplitude to another at any time whether the motor 18 is running or idle. It is merely necessary to grasp handle 12 and upon pressing upwardly on catch 14, thereby releasing tongue 16 from a serration 13, the handle together with motor 18 may .be moved to obtain any amplitude of vibration desired. This is highly desirable for it is important to vary the massage action from time to time during a treatment. Catch 14: retains thehandle 12 in any position in which it is set.

The thrust plate 25 absorbs the end thrust of shaft 21 and causes all of the motion of this shaft to be properly imparted to the connecting rod 31 as desired. Owing to the positioning of coupling 28-30 above the stud 5, the motor 18 and its base 8 may be readily turned about this stud without appreciable friction, the trunnions of member 30 merely turning in the forked inner end of connecting rod 31. i

It will be noted that the novel vibratory machine of this invention is of extremely simple and strong construction. It is apparent that the principles of this invention may be employed in other uses in addition to the one referred to in this specification.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What is claimed is 1. A vibratory machine of the character described comprising, a stationary base, a motor having a base turnably mounted on said stationary base, said motor having a rotatable motor shaft, a rocker arm pivotally mounted on said stationary base, and means connecting said rocker arm to said motor shaft and acting to translate the rotary movement of said motor shaft to a vibratory movement of said rocker arm, said connecting means being so constructed and arranged as to cause the amplitude of vibration of said rocker arm to vary as said motor base is turned on said stationary base.

2. A vibratory machine of the character described comprising, a stationary base, a swivel motor base pivotally mounted on said stationary base, a motor carried by said motor base, said motor having a rotatable shaft, a rocker arm pivotally mounted on said stationary base, and means connecting said rocker arm to said motor shaft and acting to translate the rotary motion of said motor shaft to a vibratory motion of said rocker arm, said connecting means being so constructed and arranged that when said motor base is turned through an angle about its pivoted connection with said stationary base, the amplitude of vibration of said rocker arm is varied proportionally to the magnitude of said angle.

3. A vibratory machine of the character described comprising, a stationary base, a motor having a base pivotally mounted on said stationary base, said motor having a rotatable motor shaft, a crank secured to said motor shaft, a rocker arm pivotally mounted on said stationary base, a connecting rod having its inner end universally connected to said crank and its outer end universally connected to said rocker arm for translating the rotary motion of said crank to a vibratory motion of said rocker arm, said motor base being turnable about its pivotal connection with said stationary base during the operation of said motor to elfect variation in the amplitude of vibration of said rocker arm;

4. A vibratory machine for body massage comprising, a stationary base, a motor having a base pivotally mounted on said stationary base, a handle formed on said motor base for turning said motor about its pivotal connection with said stationary base, means for retaining' said handle in any desired position, said motor having an armature driven motor shaft, a crank secured to said shaft, a rocker arm pivotally mounted on said stationary base, a connecting rod having its inner end universally connected to said crank and its outer end universally connected to said rocker arm for translating the rotary motion of said crank to a vibratory motion of said rocker arm, and a belt attached to the ends of said rocker arm for effecting body massage,the amplitude of vibration of said rocker arm being varied at will while said motor is running from a maximum when said handle is at one extreme position to zero when said r handle is at its other extreme position.

5; A vibratory machine for body massage comprising, a stationary base, a supporting stud extending upwardly from said base, a motor having a base pivotally mounted on said stud, a handle formed on said motor base for turning said motor about said stud, means for retaining said handle in any desired position, said motor having an armature driven motor shaft, a crank secured to said shaft, a rocker arm pivotally mounted on said stationary base, a connecting rod having its inner end universally connected to said crank and its outer enduniversally connected to said rocker arm for translating the rotary motion of said crank to a vibratory motion of said rocker arm, the universal connection at the inner end of said connecting rod being positioned over said supporting stud, and a belt attached to the ends of said rocker arm for effecting body massage, the amplitude of vibration of said rocker arm being varied at will while said motor is running from a maximum when said handle is at one extreme position to zero when said handle is at its other extreme position. i r

In testimony, that I claim the invention set forth above I have hereunto set my hand this20th day of November, 1929.

RICHARD T. NEWTON.

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