US1117857A - Circuit-interrupter for therapeutical apparatus. - Google Patents

Description

F. M. & M. H. KIDDER.

CIRCUIT INTERRUPTER FOR THERAPEUTICAL APPARATUS.

APPLICATION FILED JAN. 7, 1914 1,1 17,857. Patented Nov. 17, 1914.

a mm D INVENTORJ WITNESSES HR Fra 1w n'swi'orb JiTJizdder ATTORNEYS ters for high frequency apparatus as used I IHY; ES PAT NT OFFICE.

rm mm; KIIDDER'AND MILTON KIJSIJER, on NEW YORK, N. Y.

omCUI'r IN'rERRUPTER FOR HER PE IC AL APPARATUS.

' To all whom it may concern:

Be it known that we, FRANCIS M. KIDDER and MILTON H. Kroner, citizens of theUnited s and State of and Improved Circuit-Interrupter for ThertOJ improve and simplify the COIlStIllCtlOD I and operation of apparatus of the character 'apeutical Apparatus, of which the following is a full, clear and exact description.

'Thisinventlon relates to circuit interrupfor therapeutical treatments, although the invention is not necessarilylimited to this use.

The invention has for its general objects referred to soa stonbe reliable and efiicient in use, comparatively inexpensive to menu factureandof such design as to be convenien'tly handled.

A morejspecific object of the invention is the provision of novel means for regulating the strength of the treating current by ad- ;jus'tin I s 'there eing used .in connection with th e sa d adjusting means a' device whereby it'is 1m- .the armature; of the interrupter,

possible to adjust the armature beyond its "vibratory limit, or too close to the pole of which willfappear as the description pro- Yceeds, the invention comprises various novel y features of construction andarrangement of up ended hereto.

theinterrupter. I

With these objects'in view, and others arts such as will be set forthwith particuarityin thefollowingdescription and claims 11 the accompanying drawing, which I illustrates one embodiment of the invention,

and wherein similar characters of reference indicate corresponding pa'rts in all the views,

, Figure 1 is a perspective view of the complete apparatus for generating ultra-violet rays Fig. ,2 is a detail view of parts of the vibrator]; Fig. 3 is a diagrammatic view of thecircuit connections; Fig. 1 is'a side view ofa modification showinga stop means for preventing the armature from being ad'- I justable too near to or against the core of .5

the vibratin "coiligFig. 5 isa perspective view 'of the racket for supportingthe said stop means; ,Fi 6 is a perspective v ew of the'pawloft e stop 'means; Fig. 7 1s a perspective view of, the armature adjusting screw and ratchet wheelwithwhich the pawl 'engag'es.

. Specification of Iietterslatent. Patented N v, 17 1914. Application filed January 7, 1914. Serial Ne. 810,812.

Referring to the drawing, A designates'an evacuated tube or electrode of any desired type which'produces ultra-violetrays, the same being removablyinserted in one end of the handle B, which has attached thereto a current supply cord G hi is provided 2:

with a plug for "connection witha suitable supply socket.

W1th1n the handle B are arranged electrlcal devices shown in the diagram, Fig.

3, which shows the leading in wires '19 and -connected respectivelywith the switch opposite terminal connected'by th i 23 1 with the contact *Itiof theiswitch. The secondary WlIldIIlg s has onefterminal connected -W1l3l'l the wire 23 while its opposite terminal is connected withthe split sleeve 1 or contact 4'that receives the electrode contact (not shown) on the electrode .A. Ar-

rangedinshunt relation to the parts 11 and 13 of the vibrator isthe condenser 7, one

terminal of'which is connected by the wire 24 with the Wire 21, and the other terminal is connected by a wire 25 with the wire 23. Coacting with the contacts 16, 16 is a movable contact 17 which is pivotally fastened to the slide 18, Fig. 1, so that, as the device is held in the hand, of the operator, it "is merely necessary to move the slide'18 back and'forth by the thumb to open or close the circuit. 2

In operatiorn'the' currentjwhen turned on traverses the magnet windings fiwhich ener gizethe magnet core 5 that causes the armature 12 to be attracted away from the con: tact 13, thereby breaking the rimary circuit and causingthe magnet to g just ment of'the, contact 13, and as a result there'is an intermittent charging and discharging'ofthe condenser, which is shunted on the interrupter contacts, so'that the high frequency osclllator currents, characteris- I tic of condenserdisc arges, are sent through I ecome deener- 'gized, whereby the circuit is again closed the primary 7), thereby inducing a high fre quency and high voltage alternating current in the secondary winding 3, whereby ultraviolet rays are caused to be generated in the electrode A in the well-known manner. The primary circuit is readily controlled by the manipulation of the switch on the handle, and by turning the knob 14 of the vibrator screw the intensity of the ultra-violet rays can be varied.

On the heads 1 and 2 of the handle are axially projecting spaced post-s 1, 2 which serve as convenient means whereby the cord C can be wound back and forth on the handle from one end to the other in loops forming a figure 8. The posts serve to retain the ends of the loops of the coils on the handle. By this means the whole apparatus takes up comparatively little space and can be conveniently carried in the pocket.

There is a liability, in adjusting the vibrator, of screwing the armature down into contact with the core of the vibrating coil, whereby the vibrating function is destroyed and a continuous current will flow through the coil with the possibility of the latter burning out. A safety device is therefore desirable to prevent this abnormal adjustment of the armature, and consequently means for limiting or stopping the effective adjustment of the armature toward the coil core is provided in the nature shown in Figs. 5 to 7 inclusive. Fastened to the core is a bracket 30 which has a pair of arms 31 and 32 for supporting a pivoted pawl 33, said pawl having a hub or base portion 34 provided with journals 35 and 36 which engage respectively in a bearing opening 37 in the lug 81 and in a bearing forming screw 38 in the lug 32. The upper end 39 of the pawl is adapted to engage with a ratchet wheel 40 fixed on the armature adjusting screw 14L. Projecting from the base portion of the pawl is a spring arm 41 which engages under the armature spring 11, so that when the armature is moved toward the core of the coil the pawl extremity 39 is thrown into engagement with the ratchet wheel 40, thereby preventing the screw 14 from being turned any further, and bringing the armature in contact with the coil core. To provide for the proper adjustment of the parts the bracket 30 has a slot 4:2 for receiving the screw 4E3 which fastens the bracket in place, and by reason of this slot the bracket can be raised or lowered, thereby bringing the spring arm 41 into proper relation with the armature. To keep the pawl normally away from the ratchet wheel 40. the bracket 30 has a spring 44 so arranged that its free end will engage the base of the pawl at the side of the pivotal axis thereof opposite from the extremity 30, and consequently such extremity 39 is held away from the ratchet wheel.

From the foregoing description taken in connection with the accompanying drawings, the advantages of the construction and method of operation willbe readily understood by those skilled in the art to which the invention appertains,and while we have described the principle of operation, together with the apparatus which we now consider to be the best embodiment thereof, we desire to have it understood that the apparatus shown is merely illustrative, and that such changes may be made when desired as are within the scope of the appended claims.

Having thus described our invention, we claim as new and desire to secure by Letters Patent:

1. The combination of an induction coil including a core, an armature movably mounted with respectto the core, a movably mounted member engaged with the armature and movable therewith, means for adjusting the position of the armature, and a stop device movable with the said means and arranged to be engaged by the said member, whereby the latter prevents the armature from being adjusted into contact with the core.

2. The combination of a vibrator coil, an armature for the coil, a spring tensioning the armature away from the coil, means adjustable for obtaining the initial position of the armature, and means for preventing the armature from being adjusted by the firstmentioned means to a point beyond the vibratory action of the said spring.

3. The combination of a vibrator coil, an armature therefor, means adjustable to vary the position of the armature, and means for limiting the adjustment of the armature toward the coil.

4. In an apparatus of the class described, the combination of a coil, an armature attracted thereby, a spring tensioning the armature away from the coil, means for ad justing the initial position of the armature,

and a stop device movable with the adjustment of the armature and operative :to prevent movement of the said adjusting means beyond a certain point.

the combination of a coil, an armature attracted thereby, a spring tensioning the armature away from the coil, a screw for adjusting the armature toward the coil, a

o. in an apparatus of the class described,

spring-pressed pawl mounted adjacent the arn'iature and having a yielding member operatively connecting the pawl and armature, and an element carried by the screw and with which the pawl engages to prevent further turning of the screw when the armature is at its minimum operative distance from the coil.

6. The combination of a vibrator coil including a core, a movable armature, a pivoted member engaging the armature to be moved thereby in one direction, a spring operating on the member to move it in the opposite direction, a screw'for adjustin% the 7 position of the armature, a; support xed with respect to the core and in which the screw is threaded, and a member carried by and movable with the screw and arranged to arrest the movement of the first-mentioned member before the armature is adjusted to nonvibratory positlon.

In testimony whereof we have signed our 10 namesto this specification in the presence of two subscribing witnesses.

FRANCIS M. Ki-DDER. MILTON H. KIDDER.

Witnesses: v

CHA'ITIN BRADWAY, A. W. HART.

06p! of patent my be obtained for five cents each, by addressing the communion: of Patent,

Washington, D. G.

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