US1363807A

US1363807A - Electrical body-contact device

Info

Publication number: US1363807A
Application number: US377237A
Authority: US
Inventors: James W Murphy
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-04-28
Filing date: 1920-04-28
Publication date: 1920-12-28
Anticipated expiration: 1937-12-28

Description

1. w. MURPHY. ELECTRICAL BODY CONTACT DEVICE.

APPLICATION FILED APR.` 28, |920.

Patented DeQzs, 1920.

Fg. l

, 6b@ WM JAMES. W.V MURPHY, OF CHICAGO, ILLINOIS.

ELECTRICAL BODY-CONTACT DEVICE.

Specification of Letters Patent.

Patented Dec. 28, 1920.

Application mea April 2s, 1020. serial No. 377,237. n

To all whom t 'may @0f/wem.'

Be it known that I, JAMES W. MURPHY, a citizen of the United States, residing at Chicago, in the county-of Cook and State of Illinois, have invented certain new and useful Improvements in Electrical Body- Contact Devices, of which the following is a specification.

This invention relates to an electromedical device, and has forits object the providing of a compact instrument comprising two electrodes, so arranged lthat the patient himself can apply the device with one hand and have the other free to regulate the flow of electric current, for instance, or to apply a massaging action to the part of the body being treated with the electrical application.

further object is to provide an instrument of such simple construction that it can be readily assembled or disassembled for inspection or repair.

Further objects will appear from the following speciiication, taken in connection with the accompanying drawings, in which- Figure 1 shows a longitudinal section of the device with the parts in assembled relation, and with the source of electric energy shown conventionally;

Fig. 2 shows an elevation of the porcelain core' 3 shows an elevation of the supporting sleeve; and

Fig. 4 is an elevation of the clamping nut.

Like numerals refer to like members throughout the drawings, in which- 5 is an outer electrode, the body of which is of suitable metal, shown as of substantially hemispherical shape and terminating at its lower end in a threaded cylindrical collar 6, which threadedly receives an inner sleeve S.

The sleeve 8 is carried by a cylindrical shell 9, and engages the threaded portion 6 of the outer electrode. The sleeve is bent or turned over aninwardly projecting flange 9a of the base member 9, which is composed of hard rubber, or other suitable insulating material. (See Fig. 1). The member 9 is further provided with an outwardly extending flange 9b, having its outer edge serrated or knurled for convenience Ain assembling.l

linner diameter of the base collar 9a.

The core member 13, shown for example in Fig. 2, is constructed of porcelain, or the like, and to it is attached at its lower end the threaded sleeve 14, which has an upwardly extending collar 14a, of reduced diameter, engaging the core 13. The diameter of the threaded sleeve 14 is less than the EX- tending upwardly from the collar 14a is the binding post 16, which is attached to an indentation of the collar by small rivets, solder, or other means. A screw 17 extends through the binding post 16. r1`he porcelain core 13 has a recess 18 therein to accommodate the binding post 16 and screw 17,

.whereby said terminal and screw cannot interfere with the assembling of the member. On the opposite side of the core 13 is a longitudinal hole 19, of sufficient diameter to receive an ordinary electric wire 35, the end of which engages the screw 21, which is received by the screw-threaded hole 22, preferably located in the center of the core. The screw 21 also holds the inner electrode 23 in its position concentrically within the outer electrode, said inner electrode being formed of any suitable metal, such as brass or Zinc, and having a frusto-conical wall 241, and a circular disk 25 soldered or otherwise suitably secured thereon, said disk having a hole 26 in the center thereof, through which a small screw-driver may be inserted to turn the screw 21 into the threaded recess 22 of the core 13. A small washer 27 is placed on' the inner side of the flattenedV vertex of the cone, for the purpose of adding strength to the device. The upper surface of the inner electrode, formed by the disk 25, lies in the same plane as the upper peripheral extremity of the outer electrode, which is preferably beaded to form two annular rolls 27a. In operation a wet chamois skin 28, or other suitable material, may be stretched across the extremities of the electrodes, to prevent burning the patients body, and the same is held thereon by a split ring 29, which seats within th channel between the rolls.

In assembling the various parts of this invention into operative relation, the member 7 is screwed up'into the threaded portion of the outer electrode, as shown in Fig. 1. The core member 13 is then dropped within the threaded portion of the two asy l sembled members, in which position the ledge 12 of the member 7 will engage the shoulder 141 of the member 13. To firmly hold the said members in this position, I provide a nut 31 (see Fig. 4), which is com posed, preferably, of hard rubber, and has a longitudinal opening 32 through the center thereof, of a diameter suliicient to accommodate the two usual electric wires 35, and outside shell portion 33, adapted to abut against the lower surface of the member 9 (see Fig. 1) and the centrally located screw-threaded portion 34, which is adapted to be received within the female threads 14 of the core member. It will thus be seen that the core member 13 will berigidly held in position within the inner shell member 7. Suitable wires from a source of supply of electric energy enter through the hole 32 of the member 31, one of the wires thenV going through the hole 19 of the core member, where it makes suitable connections with the inner electrode by means of the screw 21, around which the end of the wire is wrapped, the screw forcing the extremity of the electrode down into contact with the wire, which rests upon a small copper washer 21a housed within the top of the core member.

The other wire enters the cavity 18 and connects with the terminal 16 by means of the screw 17, between the head of which and the said terminal the wire is securely held. Current flows from the terminal 16 to the band 14a, then to the inner shell member 7, through the connection made between the ledge 12 of said member with the shoulder 14. of the core member, and from said inner shell to said outer electrode. 'The electric current for the operation of the device may be obtained from ordinary dry batteries in conjunction with an induction coil, or from an ordinary lighting circuit in conjunction with a transformer.

In the use of this device the current is turned on and the instrument applied to that part of the body desired to be treated. The current will liow from one electrode through the skin to the other electrode, thus giving a local electrical treatment to that part of the body upon which the instrument is applied, which distinguishes this compact instrument from those commonly in use. i

Although I have shown and described a particular embodiment of my invention, it will be understood that it may be constructed in various forms without departing from the scope of the appended claims.

I claim 1. In a device of the class described, an outer electrode, an inner electrode, said electrodes having their outer extremities in the same plane, a chamois adapted to be stretched across the outer extremities ot' said electrodes, means for securing said chamois in said position, and means for connecting each of said electrodes to a source of electric energy.

2. In a device of the class described, an outer electrode, an insulating core member carried by said outer electrode, an inner electrode mounted concentrically within said outer electrode upon said insulating core, said electrodes having their upper eX- tremities in the same plane, means for connecting eachofsaid electrodes to a source of Velectric energy, a chamois skin adapted to be stretched across the upper surfaces of said electrodes, and means for holding said chamois skinl in position thereacross.

3. In a device ofthe class described, an outer electrode, an insulating core member carried by said outer electrode, an inner electrode concentrically mounted within said outer electrode upon said insulating core member, a supporting member threadedly engaging said outer electrode to support said core member, means for securely holding said core member in positionon said supporting member, and means for electrically connecting each of said electrodes to a source of supply of electric energy.

4. An outer electric ring, an inner electrode, a core of insulating material, said electrode being carried thereby, wires each having its terminal in electrical communication with one of said electrodes and means to convey current through 4said wires.

5. An inner electrode, an outer electrode, a core of insulating material, said electrodes being carried thereby, a sleeve surrounding said core, said outer electrode bei ing engaged by said sleeve, and means to convey current to each of said electrodes.

6. An inner electrode, an outer electrode, a core of insulating material, said electrodes being carried thereby, a sleeve surrounding said core, said outer electrode being engaged by said sleeve, means to convey current to each of said electrodes, and means to secure said members in assembled position.

7. An inner electrode, an outer electrode, a core of insulating material, said electrodes being carried thereby, a sleeve surrounding said core, said outer electrode being engaged by said sleeve, means to convey current to each of said electrodes, and means to secure said members in assembled position, said last named means comprising a threaded nut.

8. An inner electrode, an outer electrode, a core of insulating material, said electrodes being carried thereby, a sleeve surrounding said core, said outer electrode being engaged by said sleeve, means to convey current to each of said electrodes, means to secure said members in assembled position, said lastnamed means comprising a threaded nut, and a threaded sleeve carried by said core.

9. In a device of the class described, an

outer electrode rig, an inner electrode, a across said electrode, and means to secure chamois stretched or otherwise extending said chamois to said ring, said means comacross said electrode, and means to secure prising a clamping member operable to 10 said chamois to said ring. clamp said chamois to said electrode ring.

l0. In a device of the class described, an In testimony whereof, I have subscribed outer electrode ring, an inner electrode, t my name. cha-mois stretched or otherwise extending JAMES WV. MURPHY.