US1836733A - Vibratory massage machine - Google Patents

Description

Dec. 15, 1931. I STOYE 1,836,733

VIBRATORY MAS SAGE MACHINE Filed Ma 23, 1928 ATTORNEY Patented Dec. 15, 1931 PATENT OFFICE KURT STOYE, OF NEW' YORK, N. Y.

VIBRATORY MASSAGE MACHINE,

Application filed May 23, 1928. Serial No. 278,937,.

to different portions of the human body, for

the purpose of massaging the same.

More particularly stated, my invention ref lates to a type of motor vibrator in which the motor or its equivalent causes a pair of arms to swing rapidly back and forth, these arms being connected with mechanical parts driven thereby and extending into engagement with some part of the human body to be massaged.

The purpose of my improvement is to siniplify the mechanical parts, .cheapen the cost of their manufacture, and bring them into form where they may be readily standardized and adapted for quantity production; and at the same time render the parts reliable and positive in action.

Reference is made to the accompanying drawings forming a part of this specification, and in which like reference characters indicate like parts throughout the several figures.

Figure 1 is a snbstantially horizontal section showing one form of my improved motor vibrator.

Figure 2 is a section on the line 22 of Figure 1, looking in the direction indicatedby the arrows.

Figure 3 is a section showing a different form of my invention, and is otherwise a section similar to Figure 2.

An electric motor 4, of the usual or any desired censtruction, is provided with bearings one of which is shown at 5, and supported in these bearings is the motor shaft 6.

Secured to the motor and enclosing a portion of the shaft 6 is a shell 7, made of suitable material, preferably sheet metal.

The shell 7 is provided with two depending portions 8, 8, so fashioned as to form a step, this step being provided with a slot 9 indicated more particularly in Figure 2.

Fitted upon the step is a guide plate 10 made of suitable material such as wood, fibre or metal, and provided with a guide slot 11, extending parallel with the shaft 6.

Fitted tightly upon the shaft 6 and revoluble therewith is a journal neck 12, provided with a cylindrical bore 13 extending entirely through it. However, the axis of the cylin drical bore does not coincide with the axis of the cylindrical neck, but is askew relatively thereto as may be understood from Fig ure 1.

The cylindrical neck 12 is provided at one of its ends with an annular flange 14.

Neatly but loosely encircling the journal neck 12 is a bearing 15, in the form of a ring. Integral with this hearing and extending; in opposite directions therefrom are a pair of arms 16, 17.

The journal neck 12 carries a flange ring 18, at the end thereof opposite the annular flange 14.

The journal neck 12 also carries a ball? bearing 19, interposed between the flange ring 18 and the adjacent portion of the ring 15.

Carried by the ring 15 and extending r-adially therefrom is a guide pin 20, shown more particularly in Figure 2. This guide pin extends through the guide slot'll, and also through the slot 9.

In order to prevent arms 17 from turning with the ournal neck 12 or being otherwise displaced, I extend the arms radially outa ward through the pair of slots 21, 22, with which I provide the shell 7. By virtue of these slots the arms 16, 17 are free to swing, within reasonable limits, in a plane which is normal to the axis of the shaft 6.

The arm 16 is provided with a number of holes 23, and the arm 17 is similarly provided with a number of holes 24. In this particularinstance there are seven holes 23 and seven holes 2%, but the number of these holes may be varied.

A strap 27, made preferably of canvas 01" the like and which may have a width of two, three or four inches, is provided at its ends with a pair of hooks 29, 30 or equivalent fastenings, whereby its ends are detachably The operation of the form of my device shown in Figures 1 and 2 ma be readily understood. from the foregoing escription.

The motor being in action, the shaft 16 rotates, and the journal neck 12 is turned. However, the journal neck being askew relatively to the motor shaft, the annular hearing 15 is subjected to a wabbling motion, the arms 16 and 17 being thus caused to swing back and forth in a fixed plane.

The straps 27 and 28 can be brought nearer to the motor shaft as occasion may require, by disengaging the hooks 29 and shifting them to different holes 23 and 24. In this way the degree of vibratory movement conferred upon the ends of the straps may be varied within reasonable limits.

While the motor is in action as just described, the guide pin 20 has a swinging movement parallel with the length of the slot 11. One advantage of this guide pin 20 is that it saves wear upon the arms 16 and 17, which are of more expensive construction than the guide pin 20; and when this pin is worn out, damaged or misshapen it can be replaced by a new guide pin. This is also true of the guide plate 10.

In some instances I discard the guide pin 20 and parts immediately associated therewith. For this purpose I may employ the construction illustrated in Figure 3.

The shell 31 is provided with a pair of slots 32, 33 disposed oppositely to each other, and is further provided with flanges 3a, 35, arranged in pairs asshown, these flanges serving as bearings, and as such receiving the wear due to movements of the arms 16, 17, which extend out through the slots 32 and 33.

Except as just stated, the structure and ac tion of the mechanism shown in Figure 2 is the same as that appearing in the other ligures.

It will be noted that the journal neck 12 may be made from an ordinary cyindrical journal neck, by simply providing it with a cylindrical bore 13, the direction of which is askew relatively to the axis of the journal neck. Such being the case, the journal neck 12 can be cheaply manufactured in large quantities, and is essentially a part having a relatively simple construction. The journal neck 12 may be readily made and sold as an article of manufacture.

While in this instance the source of power is an electric motor, I may use any other sort of motor suitable for the purpose.

I do not limit myself to the precise mechanism shown, as variations may be made therein without departing from my invention, the scope of which is commensurate with my claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is as follows:

1.. A vibratory massage machine, comprising a motor provided with a revoluble shaft,

a shell mounted upon said motor and partially enclosing said shaft, said shell being provided with slots, a journal neck carried by said revoluble shaft and disposed adjacent said shell, a bearing engaging said journal neck and disposed adjacent said shell, a pair of arms connected with said bearing and extending therefrom through said slots, and a pair of massage straps connected with said arms and actuated by movements thereof.

2. A vibratory massage machine, comprising a motor provided with a revoluble shaft, a journal neck having substantially the form of a cylinder and provided with a cylindrical bore disposed askew relatively to the axis of said journal neck, said revoluble shaft fitting into said bore of said journal neck in order to enable said journal neck to turn with said shaft, a bearing fitted upon said journal neck and loose relatively thereto in order to receive a wabbling movement as said ournal rotates with said shaft, means for preventing said bearing from turning with said shaft, a pair of arms carried by said bearing and extending therefrom in substantially opposite directions, anda pair of massage straps connected with said arms and extending therefrom in directions substantially lateral to the length thereof, in order to enable said straps to be pulled alternately in response to the wabbling movement of said bearing.

3. A Vibratory massage machine, comprising a motor provided with a revoluble shaft, a shell mounted rigidly upon said motor and partially enclosing said shaft, said shell be ing provided with slots, a journal neck carried by said shaft and located within said shell, a bearing engaging said journal neck and located within said shell, said bearing and said journal neck being of suitable form to enable the rotation of said shaft to cause a wabbling movement of said bearing, a pair of arms connected with said bearings and extending therefrom radially outward through said slot, and a pair of massage straps detachably connected with said arms and extending laterally therefrom.

Signed at New York, in the county of New York and State of New York, this 17th day of hIay, 1928.

KURT STOYE.

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