US2790096A

US2790096A - Electro-magnetic vibrator motors

Info

Publication number: US2790096A
Application number: US535843A
Authority: US
Inventors: Abrahamson Edmund
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-09-22
Filing date: 1955-09-22
Publication date: 1957-04-23
Anticipated expiration: 1974-04-23

Description

April 23, 1957' E. ABRAHAMSON ELECTRO-MAGNEZTIC VIBRATOR MOTORS Filed Sept. 22, 1955 *1 INVENTOR r 5=.-b EDMUND ABRAHAMSO'N i %'9 BY M AGENT United States Patent ELECTRO-MAGNETIC VIBRATOR MOTORS Edmund Abrahamson, Baldwin, N. Y.

Application September 22, 1955, Serial No. 535,843

9 Claims. (Cl. 31020) This invention relates to electro-magnetic motors of the type in which a flexible or spring armature supporting a plate is electromagnetically vibrated to impart vibrating movements to said plate which are converted into rotating movements of a platform resting on this plate.

An important object of the present invention is to provide a plurality of these plates and associated platforms with a single electro-magnetic vibrating motor of the type mentioned.

Another important object of the invention is to provide a plurality of these plates and associated platforms concentrically on one armature of a single electro-magnetic motor of the above type.

A further object of the invention is to provide these plates and platforms in such a manner that each of the platforms rotates at a speed which is different from that of the others.

A still further object of the present invention is to provide these plates and platforms in such a manner that the latter rotate in different directions.

Other important objects and advantageous features of this invention will be apparent from the following detailed description and drawing appended thereto, wherein merely for purposes of disclosure herein, a non-limitative embodiment of this invention is set forth.

In the drawings,

Fig. 1 is a perspective view of a toy or display apparatus driven by a motor according to this invention;

Fig. 2 shows a longitudinal section through the motor in Fig. 1;

Fig. 3 represents a cross section through the motor in Fig. 2 taken along the lines 33 and looking in the direction of the arrows.

Referring in detail to Fig. 1 of the drawing, the driving motor itself is not visible in this illustration, because it is completely encased in a cylindrical box or jacket 10. The top of the device in Fig. 1 is a round platform 11 extending over the cylindrical jacket 10, said platform 11 being adapted to be rotated, for example, in the direction of arrow 12 by a driving motor inside the jacket 10. Any kind of small articles to be displayed can be attached to the plat-form 11. In Fig. 1, four small toy sail boats 13 are cemented on the platform 11 and are arranged close to the periphery thereof at equal distances from one another. A smaller round platform 14 rotating in a direction opposite to that of the larger platform 11, for example, in the direction of arrow 15, is concentrically arranged with respect to said larger platform 11. Any suitable article to be displayed can be placed on the small platform 14, for example, a can 16 to contain or simulate to contain the article to be advertised in a store window. Thus, in the embodiment shown in Fig. 1 the toy sail boats 13 appear to move in opposite direction of the rotation of the can 16.

As Figs. 2 and 3 show, a vibrating motor 17 is mounted on a flat bottom 18 of the cylindrical casing 10, said bottom being firmly secured to the latter, for example, by welding or soldering its outer flange or rim 19 to the ice lower part of the cylindrical casing 10. The vibrating motor 17 comprises an electromagnet having an iron core 20 on which an energizing coil 21 is wound. The iron core 20 and the energizing coil 21 are mounted on the bottom 18 by means of an angularly bent bracket iron 22 which is secured to the iron core 20. ing angle of the iron bracket is such that the axis of the electromagnet core 20 is inclined with respect to the surface of the bottom 18. The electric conductors supplying current to the energizing coil 21 are denoted by 42. An armature iron frame member 23 in the shape of a parallelogram with two slanting smaller parallel side strips 24, 25 and two parallel

horizontal strips

26, 27 is mounted on the bottom 18, i. e. the lower 27 of the horizontal strips together with the bracket 22 is secured to the bottom 18 by means of a single bolt 28 attached to the bottom 18 and a nut 29 threaded on this bolt 28. The frame 23 is somewhat resilient due to its shape, structure and mounting i. c. it can be slightly deformed when vibrated under the action of the electrom'agnet. One of the inclined side strips of the frame 23, i. e. side strip 25, is arranged opposite the free end or pole shoe of the iron core 20 of the electromagnet in such a manner that a small gap remains between the end of the iron core 20 and the side strip 25. The side strips 24, 25 are slanting at such angle that the axis of the electromagnet core 20 is about perpendicular to the plane of the side strips 24 and 25 as shown in Fig. 2.

A round plate 3 having a central lug or boss 31 ex tending from the center of the bottom surface of the plate 30 is mounted on the upper horizontal strip 26 by means of a bolt 32 secured to this strip 26, for example, by soldering, welding or brazing and extending upwardly therethrough. This bolt 32 is passed through a central opening in the round plate 36 and in its boss or lug 31 and the bottom of the latter is in seating engagement with the strip 26. An annular portion of the upper surface of the plate 30 is covered with a layer 33 of a pile fabric, such as velvet or mohair, the pile of which is inclined in a given direction. This fabric may be cemented on the plate 30. The center of the plate 30 is left free from the fabric. A fiat bottom member 34 of the platform 11 secured thereto and having 21 depending peripheral flange 35 is resting on the pile fabric 33 of the platform 30.

When the coil 21 of the electromagnet of the motor 17 is energized by a pulsating current, such as an alternating current, the side strip 25 will be intermittently attracted by the iron core 20, whereby the armature frame member 23 of which the strip 25 is a part will vibrate in accordance with the frequency of this pulsating or alternating current. The member 34 with the platform 11 and the toy sail boats 13 mounted thereon will now rotate at a relative low velocity in the direction of the inclined hairs of the pile fabric 33, because the individual hairs of the pile fabric 33 impart propelling impulses to the member 34 engaged thereby as a result of the vibrations transmitted to the plate 30 and this pile fabric 33. In other words, the vibrations produced by the motor 17 are converted into rotational forces acting on the plaftorm 11 by the coaction between the pile fabric 33 and the contacted lower surface of the member 34.

The platform 11 and its bottom member 34 are provided with relatively large central openings at 36 vertically perforating these two parts. A round plate 37 smaller than the plate 30 and having also a lug or boss 38 extending from the center of the bottom surface of the plate 37 is mounted on top of the plate 30, i. e. the lug or boss 38 is threaded as a nut on the upper end of the bolt 32 extending through the plate 30 in which it is threaded and through the opening 36. One or more washers 39, 39' of the required thickness for properly spacing the plate 37 above the platform 11 may be inserted The bend-.

between the lower end of the lug or boss 38 and the upper surface of the plate 30. The lug or boss 38 extends partially in the opening at 36 without engaging the wall of this opening. The plate 37 is covered by a layer 40 of pile fabric, such as velvet or mohair, cemented thereon. The hairs of this pile fabric are directed in opopsite direction as those of the pile ifabric33 on plate 30. The small platform 14 supporting the can 16 is resting on the pile fabric 40 of the plate 37. This small platform 14 having a peripheral depending flange 41 may be firmly secured to or joined with the bot-tom of the ran i When the coil 21 of the vibrating motor 17 is energized, in addition to the platform 11, the smaller platform 14 will rotate, whereby the direction of the rotation of the latter takes place in opposite direction to that of the platform 14. If the heirs of the pile fabric ill are inclined in the same direction as those of the pile fabric 33, the rotating direction of the platform 14 will be reversed. Thus, it is possible to obtain a rotation of the smaller platform 14 either in the same or in opposite direction of that of the larger platform 11.

The new motor can be constructed that the rotating speeds of the two revolving platforms are either the same or different from one another. The relative speeds of the platforms 11 and 14 depend upon the frequencies of vibration of their supporting and propelling fabric-covered plates 30 and 37, the weight of the rotating members and the diameters of the platforms. A platform having a smaller diameter rotates faster than a platform with a large diameter. By suitably dimensioning or designing the elements or parts of the new motor, the speeds of the platforms can be varied or adjusted within certain limits. The frequency of vibration of the vibrating motor 17 and thereby its propelling speed can be varied or controlled by changing the Width of the gap between the poles of the electromagnet and/or by decreasing or increasing the voltage fed to its energizing coil 21.

It will be evident to those skilled in the arts that other structural arrangements and combinations thereof can be employed or devised to embody the invention disclosed herein, and that it is intended that the present invention include all such, without limitation to the specific forms thereof herein set forth.

I claim:

.1. In a vibrator motor, a relatively stationary base, an electromagnetic vibrator on said base having an armature means and adjacent thereto an electro-magnet means adapted to be energized by an electric pulsating current to vibrate said armature means, a plurality of substantially horizontal plates concentrically arranged with respect to one another and connected to said armature means to be vibrated thereby, pile fabric layers on each of said plates, 'a platform adapted to support articles resting on each of said pile fabric layers to be rotated thereby under the action of the vibrations transmitted to said layers, said vibrations being converted into rotating movements of said platforms.

2. In a vibrator motor according to claim 1, wherein the piles of said fabric layers on said different plates are inclined in different directions.

in a vibrator motor according to claim 1, wherein the piles of said fabric layers on said different plates are inclined in the same direction.

4. In a vibrator motor according to claim 1, wherein said armature means comprises a flexible frame having the shape of a parallelogram formed by two substantially horizontal strips and two slanting side strips between said horizontal strips, one of said side strips being opposite said electro-rnagnet means, the upper of said substantially horizontal strips supporting said plates, the lower of said horizontal strips being attached to said base.

5. In a vibrator motor according to claim 1, wherein one of said plates is directly mounted on said armature means and at least one of the other of said plates is secured to said first plate.

6. In a vibrator motor according to claim 1, wherein said plates are round disks, wherein one of said plates is directly mounted on said armature means, and wherein said platforms are also round disks.

7. In a vibrator motor according to claim 1, wherein said plates and said platforms are disposed at different levels, respectively.

8. In a vibrator motor according to claim 7, wherein at least one of said platforms has a central opening, and wherein at least one of said plates ha a central lug at its bottom extending into said central opening to engage said plate underneath thereof on which it is mounted.

9. In a vibrator motor according to claim 8, wherein a single bolt is mounted on said armature means, said bolt projecting substantially vertically, said plates being secured to said bolt.

References Cited in the file of this patent UNITED STATES PATENTS 1,617,126 Kurten Feb. 8, 1927 1,836,748 Carley Dec. 15, 1931 FOREIGN PATENTS 801,116 Germany Dec. 21, 1950