US975090A - Electrical coupling and switch. - Google Patents

Description

R. H. WAPPLER.

ELECTRICAL COUPLING AND SWITCH.

,APPLICATION FILED MAY 25, 1910.

975,090. Patented Noms, 1910.

- non-conducting contacts pecially for UNITED STATESl PATENT OFFICE.

REINHOLD E. WAPPIJER, OIF-NEW YORK, N. Y., ASSIGNOR T0 AMERICAN CYSTOSCOPE MAKERS, INC., OF NEW YORK,

N. Y., A CORPORATION OF NEW YORK.

ELECTRICAL COUILING AND SWITCH.

Specification of Letters Patent.

Patented Nov. s, 1910.

Application mea May 25,1910. serial No. 563,281.

To all whom 'Zt may concern:

Be it known that I, REINHOLD H. WAP- PLER, a citizenof the United States, residing in the borough of Manhattan, in the city, county, and State of New York, have invented an Improved Electrical Coupling and Switch, of which the following is a specification. t

My invention relates to a device comprising in one structure an electric coupling and switch adapted for general use, but particularly adapted for use with electro-medical and electro-surgical appliances, with the object of providing an insulating holder and an on ando switch with rubbing contacts and which switch can only be readily disconnected in one position of the parts.

In carrying out my invention, I provide two series of parts which are adapted to be brought together in axial alinernent and engagement; the one series of parts is adapted fer rotation with reference to' the other series.

The wires of an electric cable are adapted to be connectedto one series and the other series are arranged lf ory contact with other devices to form a coupling and switch; the other devices usually being electro-medical and electro-surgical appliances of'one form or another.

In connection with this structured pro` vide a spring nger extending out from one series of parts and adapted to contact electrically with the other series of-parts, land the part contacted with by this finger is provided with oppositely'disposed non-electric contacts and with other oppositely disposed conducting contacts circularly arranged so that there is a sliding contact with rotation of the parts between said contacts and the end of the said spring finger; one of said being prepared esthe axial engagement of the parts, all of which is hereinafter more particularly described.

In the drawing, Figure 1 is a plan of the device of my improvement and of about full size. Fig. 2 in enlarged size shows the same parts inA a position at 'right angles to the arrangement in Fig. 1; the handle being broken off. Fig. 3 is a longitudinal section on the same scale of the parts shown in Fig.

2, and at right angles to the position Fig. 2.

Fig. 4 is a cross section at' the dotted line l the dotted line y, y, of Fig. 3. Fig. 6 is a plan on the scale of Fig. l showing the connected relation of the parts of Fig. l with an implement engaged thereby, and Fig. 7 illustrates by a plan another application of the devices of my invention.

Similar letters or numerals of reference indicate the same parts.

The handle a is tubular, of insulating material such as hard rubber and is interiorly threaded at one end. A metal sleeve b has a threaded portion to screw into the end of the handle as shown in Fig. 3, and this sleeve is off-setl both internally and externally; the portion exposed to view being larger the threaded end received in the handle and the internal diameter smaller still. This sleeve is longitudinally slit to'produce the spring inger'b1, the free end of which on the under side is made rounded or with a rounded projection.l

than

c represents an insulating sleeve, or inv other words, a sleeve of insulating material parallel sided within and off-set exteriorly and this fits snugly into and at one end extends beyond the end of the sleeveb, that is, the end that comes within the handle, while at the other end may or may not be Hush with the end of the sleeve b.

Within the sleeve c isa tubular conductor d entirely surrounded by the sleeve c and the end of this conductor which comes Within the handle a is brought together or collapsed from opposite sides as shown in Fig. 3, where the contact surfaces may preferably be solderedtogether.

e represents one end of an electric cable with two wires; one of the wires 2 being soldered to the closed end d1 of the tubular conductor d, while the other wire 3 is prolonged beyond the end of the wire 2 and is the metal sleeve b,

soldered to the reduced end of the metal Asnugly or forcefully thatl they do not require anyconnecting pins which might interfere with the functions of the parts.

Surrounding the metal sleeve b there is a splitspring ring f performing a function hereinafter described. f

The description so the two series of the connected parts.

far comprises one of The other series of parts comprise the olf-set stem lz, with its U-shaped contact h1 formed of metal.

A portion of this stem as shown 1n the drawing, is surrounded by an oE-setsleeve lc of insulating material and this in turnisv surrounded by an off-set metal sleeve i; the arts i and lc. being of the same length. vhe reduced portion of the metal sleeve z' is circumferentially grooved and passing through/the same is a plug Z of bone or similar non-conducting material, and when A'as ' shaped contact h1. centers of theplug Z and end i I provide' 'reduced end i is flattened by these arts are constructed I prefer to lacev the -p ug Z across the reduced end o the sleeve i and then bore through the plug a hole of suficient sizeto receive the reduced end'of the o-set sleeve c ofinsulating ma,- terial, as it is essential that any conductivlty of the sleeve z' should bekept away from the conductivity of the olf-set stem hand its U- In the groove 4 at the conical recesses '10. This off-set stem k is assed .centrally through the off-set sleeve E of insulating material.

, The groove 4 which extendsaround the .reducedI portion ofthe sleeve z is 'also formed Qn the surfaces ofthe plug Z and one face of thev plug Z and a portion of the producing a surface Z1 atthe left hand si e of Fi 4, at which part the groove`4 is substantia ly cut away. I further provide -a'contact sprin l (see particularly Figs; 1, 2 and 6) hel tb the surface df the sleeve z', that is, the partV of greatestg diameter, by a screw,

- Thesev latter bart :form the second o the series of engaging parts. A

Figs. 1, 2 and -'showthe series of parts 'in their connected relation .in which lthe right hand end of the stem h has been passed into the open outer end ofthe tubular conductord, at once establishing an electr1c clrcuit from any part engaged b` the U-contact 11.1 lthrough the stein la., tu ular conductor d, closed end dl--and the wire 2` of the cable e. This connection also brings f so -the spring finger b1 intothe groove 4 in the surface of the reduced portion of the sleeve 2". -The parts are to be brought together by an axially sliding contact which brings the free end of the finger b1 against the Surface AV quarter revolutionA of either one of these parts with reference to the other, 4 the rounded end of the linger b1 into u'arter rotation brings initial .position of emplacement againstthe fiat end of the plug Z and in which position an axial movement will separate the series of the vtwo parts.

,In Fig. 6 I have shown a tubular body m with a ange l5 and two insulating -iianges 6 7. These parts are illustrative of the -relation of the device of my improvement for electrical contact with another member because the part Z1. as a U oryoke-member passes between the ilanges 6 7 in contact with the rounded surface of the body between said contacts, while the free end of the contact Spring 1 comes againstthe outer surface of the metal ange 5, in which case the circuit from the other wire 3` of the cable is through the metalsleeve b and its spring finger b1, the metal sleeved and itsA contact spring'z'JL to the lange of the body.

The -function performed by the split spring ring f is a support to the spring nger 'b1 causing the same to keep its position and maintain itsspring function-to a more certain extent than would be possible in the absence of the split spring ring f; also to prevent mis lacement and a possible bending back of the spring nger when the parts are disconnected; furthermore to 'insure the closest stationary and rubbing contacts betvreen the spring finger b1 and the groove 4 ofthe sleeve z', not only to insure the make and break of ,the circuit 0f my improved on andotf switch but serve to keep the contacts clean and bright l.and fully eliicient.

In Fig. 7 I have shown a part i2 as a head I prolonged'from the olf-set metal sleeve z whichis also made 'as Ihereinbefore described with reference to thev plug, Z- and groove 4 foi' the'spring linger b1. In this figure I have shown a slender tubular member 8 with an electric light 9 on the extremity thereof to be made incandescent in the electromedical operation-of the device.

.While I have shown and described the structure and application of the contact i springz'1 the same-is not an essential ele` ment of my invention and may not be employed;v in some applications of the generic structure of my invention.

' I clalm'as my invention: v

1. In an electric coupling and switch, two

`series of axiallyengaging parts capable of rotation of one series with reference to the [othdr serles, and means extending from one engagement and for rotation of oneseries with reference to the other series, and means extending from one series and connecting with a member of the other series, oppositely disposed 'non-conducting contacts and other "series and connecting with the other series oppositely disposed conducting contacts cirring cularly arranged and in theI rotary movement` making and breaking the circuit thereof with a rubbing contact.

3. In an electric coupling and switch and in combination, a handle of insulating material, a metal sleeve vadapted to be connected therewith, a springI finger formed Vfrom and as a prolongation of said sleeve, an insulating llning to said sleeve and a tubular conductor' lining to the insulating sleeve, a cable passing intof said handle, the one of its wires connected electrically and mechanically with .the tubular conductor and the otherd connected electrically and mechanically with the metal sleeve, and a part' including a stem adapted for axial mechanical and electrical contact with the`aforesaid parts and for rotation in connection therewith, in Which the free end of the spring finger is adapted in the rotary movement of said part for making and breaking the circuit withy a sliding or rubbing contact.

4. VIn an electric coupling and switch and in combination, a handle'of insulating material, a vmetal sleeve adapted to be connected therewith, a spring finger formed fromv and as a prolongation of said sleeve, an insulating lining to said sleeve anda tubular conductor lining to the insulating sleeve, a cab/le passing into said handle, the one of its wires connected electrically and mechanically With the tubular conductor and the other connected electrically and mechanically with the metal sleeve, a split spring surrounding said metal sleeve and its spring linger and a part including a stem axial mechanical and electrical contact with the aforesaid parts rotation in connection therewith, in which the free endof the spring finger is adapted in the rotary movement of said part for y of insulating material parts and tting through said parts and continued beyondl the same at'either end andv making Vand breaking the circuit with a sliding or rubbing contact.

5. In an electric coupling and switch and 1 n V combination, an off-set sleeve provided Vwith a circumferential groove, a plug-pass ing diametrically across through saidsleeve and the sleeve 1 and plug made tubular, an oH-set sleevev of insulating material passing through said the same snugly, a stem of metal passing contact, a tubular and for ,and move through the same one of said ends provided with a U-shaped conductor adapted to receive said metal stem at its end opposite to the'end having the U-shaped contact, a metal sleeve and spring finger adapted at the freeend thereof for a rubbing contact inthe 'l groove of theaforesaid olf-set metal sleeve,

an lnsulation between the tubular conductor' and the metal sleeve and the Wires of a cable secured mechanically and'electrically to the said tubular conductor and metal sleeve.

6. In anelectric coupling and switch and in combination, an off-set sleeve provided with a circumferential groove, a plug passing diametrically across through said sleeve of insulating material and the sleeve and plug made tubular, an off-set sleeve of insulating material passing through said parts and fitting the same snugly, a stem of metal passing through said parts and continued beyond the same, a tubular conductor adapted to receive said met-al stem at its end, a metal sleeve and spring inger adapted at the free end thereof for a rubbin contact in the groove of the aforesaid o -set metal sleeve, an insulation between the tubular conductor and the metal sleeve and the Wires of a cable secured mechanically and electrically to the said tubular conductor and metal sleeve. l

7. In a coupling and switch for electromedical and electro-surgical appliances, two series of engaging parts adapted for axial engagement and for rotation of one series with reference to the other series, a circular member associated with one of said series, an insulating plug passing diametrlcally across through the circular member and said parts provided with a circularly arranged circumferential groove and oppositely disposed central recesses in'line wlth said groove, and a springI finger associated with the other series of parts and having a free end adapted to engage said groove witha rubbing contact and to stop in and engage the said recesses in making and breaking the circuit. Signed by me this 17th day of May '1910.

REINHOLD H. WAPPLER.

Witnesses G Eo. T. PINCKNEY, E. JZACHARIASEN.

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