US1694649A - Applicator-securing means - Google Patents

Description

Dec. 11, 1928. 1,694,649

E. R. GOLDFIELD ET AL APPLICATOR SECURING MEANS Filed Feb. 14, 1927 ll, i928.

EEATES 1,694,649 harem OFFICE.

EDWIN It. GOLDFIELD.ANLD CAPEBTON HORSLEY, OF CLEVELAND, OHEO, ASSIGNORS 'TQ THE ENG'ELII ELECTRIC COMPANY, 01F

OHIO.

CLEVELAND, OHIO, A COEPORATIGN 0F APPLICATOR-SECURING MEANS.

Application-filedFebruary 1a, 1927. Serial No. 168,050 1 An applicator of the type to which this in vention is especially adapted comprises an. electrode plate presenting a contact surface of conformation to fit that portion of the body which is to be treated, and carrying on its back surface means for connecting the;

electrode in the treating circuit. Ordinarily to prevent burning it is necessary that good contact with the body he maintained preferably throughout the surface of the plate; to allow for circulation, however, the plate must be yieldably secured in] position.

According to our invention we secure the plate with a member of readily flexible elastic webbing by novel means which allow engage mont between the plate and webbing in any desirable relation or adjustment, and without mutilating the webbing; or when a more permanent engagement is desired, by perforation of the webbing, provide a positive interlock therewith.

The exact nature of the invention will be apparent from the following description taken in connection with the accompanying drawings in which Fig. l is a back view of an electrode chosen an example in which our securing means are incorporated and showing a piece of webbing secured wit-h the electrode thereby; Fig. 2 is a side view of the same partly in section to show details of the means by which the webbing is secured; and Fig. 3 is a detail sectional view showing an alternate and more permanent manner of securing the webbing by our securing means.

Referring now to the drawings, 1 is the electrode proper comprising a plate of genorally arcua'te conformation on the back of which is an integral lug 2 carrying terminals by which the electrode may be connected in the treating circuit. The electrode is shaped to fit the portion of the human body for which it was designed, the particular electrode illus trated for example would fit around a limb such as the leg at its calf.

In employing the electrode, as stated above a. firm contact with the body must be established throughout its inner surface and the electrode must be insulated from other ohjects than are in the circuit. Moreover,

many electrical treatment require some con- I siderable duration of the application. For

all these reasons provision must be made for securing the electrode in operative position, firmly, yet in a manner so asnot to impede the blood circulation of the patient.

The conditions recited dictate the employ ment for the purpose,of a band of readily flexible textile material, preferably of an elas-j tic nature, such as the welllrnown elastic rwebbing in which parallel threads of rubber are interwoven in such manner that the weba longitudmaldirection.

bing is extensible in A band of such material forms an ideal medium for securing such an applicator.

According to our invention we provide on the body portion of the electrode, as one'adjacent each end thereof, an upstanding projection 3 ofthe peculiar form illustrated havmg an undercut base portion and preferably terminating in a bluntly pointed nib portion, the two described portions forming between them an overhanging shoulder or blunt edge. The projection is preferably of circular section, so that the shoulder is circular and the nib portion coniform.

We have found that with such a projection it is possible to secure a webbing such as described, the shoulder of the projection engaging the threads of the webbing to hold the same under tension, but without perforating it. This engagement is easily accomplished by pressing the webbing, as by the thumb, around and particularly back of and against the projection, as tension is applied, and in the nature of frictional engagement.

hen a more permanent engagement is desired, as for example at one end of the webbing, to form a secured end, the proj ection may be punched through the webbing, the point of the nib portion being sufiiciently sharp to pierce the webbing when pressed directly against it, this arrangement being shown in Fig. 3. When thus secured upon the projection, the webbing is secured from unintentional removal therefrom by the overhanging circular edge thereof already described.

lVhen properly applied the webbing free end assumes a position as indicated in Figs. 1 and 2, in actual use the opposite or secured end having been secured in the same manner or as indicated in Fig. 3 on the oppositeprojection. Where the electrode is of larger area, obviously, a number of projections may be employed in connection with a Wider securing belt if necessary.

In employing the arrangement described the position of the projections in the Webbing will he rarely, if ever, duplicated, but since the Webbing is not injured in anyway by the projection employed as indicated in Figs. 1

and 2, in any event the Webbing will last up to the life of the elastic members. It will be noted that the points of the projections are so small and blunt-as to be incapable oieffecting any accidental bodily injury, or injury to the Webbing, although ca iiable of gPQIiEO- rating the Webbing if desired.

It will be evident also, that the invention is equally applicable for similar employment in connection with applicators other than the electrode chosen for illustration.

'VVhat We claim is:

1. In an applicator having a body portion, a projection upstanding therefrom and having an undercut base portion and a nib portion, the projection portions forming therebetween-an edge overhanging the base portion and adapted for engagement with a securing band oi elastic ebbing applied flatwise to saidbody portion. 7

2. In an applicator having a body portion, a projection upstanding-therefiom and having an under cut base portion and a coniform nib portion, the projection portions forming therebetween a circular blunt edge overhanging the base portion and adapted for frictional engagement With a securing band of elastic Webbing applied fiatwise to said body portion, said nib portion being adapted to pierce said band and said edge being adapted to retain-the same when pierced, as an optiona1 manor of securing the band.

3. In an applicator having a body portion, a PELlI Gif projections upstanding therefrom and each having an undercut :base portion and a ni'lb portion, said portions of each projection forming th-erebetween an overhanging edge whereby one end oft-a securingband of elastic Webbing may be pierced by the nib portion .osf either of said projectiennand be retaineduo-n said projection by the overhanging edge thereof, and the other end of said band may be applied fiatW-ise to'sa-id :applicator body portion and frictionally engaged with said edge thereof ,to 'yieldab'ly secure the applicator upon a limb.

In testimony whereof we hereby afiix our signatures.

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