USRE12805E - Ruhmkorff coil - Google Patents

Description

M12305. I RE'ISSUED JUNE 2,1908;

J.M0INTYRE.

RUHMKORFF COIL. APPLICATION mum r213. g1, 150a.

ATTORNEYS I INVENTOH IQ/Hz Mfrzifyrs I whm on rrnn s'rAtrns PATENT OFFICE.

JOHN llicINlYltE, 0F JERSEY (,lil', NEW JERSEY.

RUHMKORFF COIL.

I Specification of Reissued Letters Patent. Reissued June 2, 1908.

Original No. 796,851, dated August 8 1905, Serial No. 236,024. Application for reissue filed February 21, 1908.

Serial No. 417,208. r

To all whom it may concern:

Be it known that I, Jonn B'ICINTYRE, a citizen of the United States, and a resident of Jersey City, in the county of lludson and State of New Jersey, have invented a new and Improved Rulimkorl'l' Coil, of which the following is a full, clear, and exact description.

The invention relates to ltulnnko'rll' coils for use in electro-magnetic apparatus, such.

for instance as shown and described in the Letters Patent of the United States, No. 781,448, granted to me on January 31, 1905. The object of the invention is to. provide a new and improved R-uhmkorll' coil, arranged to allow continuous running of the apparatus without requiring re-truing of the contact platimnn-portions, and insuring a proper read ustment and contact between the said contact platinum-portions, without danger of uicklybiirning their registering faces.

heinvention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the'views.

Figure 1 is a plan. View of the improvement; Fig. 2 is a side elevation of the same; Fig. 3 is an enlarged cross section of the same, on the line 33 of Fig. 2 Fig. 4 is a perspective View of the improvement and Fig. 5 a perspective View of the non-rotatable, slidable bar carrying one of the contact-plates.-

On the baseA of the apparatus is mounted the usual coil-cylinder B carrying the primary and secondary wires and the central core C, 0 posite the outer end of which is arranged t e armature D on the free end of a spring armature-lever D, fixed at its other end in a suitable post E carried by ,tliebaise:

A. On the spring armature-lever D, between the armature D and the fixed end, is

held a contact platinum-portion I), as inditate, and fitted to slide in a correspgndingly' shaped bearing; held on a post Gj attached to ratus is in use;

ed on one end of a bar vidcd with the usual bindin the base A. A set-screw H, screwing in the post G against the bar serves to lock the alter in place after the desired adjustment is made. To bring the contact-platinum portion I? in proper relation to the armaturele'ver contact-platinuin portion LP, a spring I, secured at one end to the base A, presses with its free end against the knob F on the outer end ot the bar F, so that when the screw H is loosened the spring I causes the bar F to slide toward the armature-Lvenl),

to bring the contact portion F in proper relation to the contact-portion D By the arrangement described the bar l carrying the contact portions l is spring-pressed, to bring the contact portions l) and l into proper face contact with each other. When this has been done the bar i is fastened in place.

in order to hold the armature-leverD ternporarily in a fixed position while adjusting the bar F, a retaining device J is employed, such as an arm or bar, l'ul'crnmed on the face of the coil-cylinder B and adapted to be swung in position between the face of the cylinder B and the inner face of the armature-D of the armature-lever I), so as to prevent the said armature D from swinging toward the core taining device J back into a normal inactive position, as indicated ,in dotted lines in Fig. 3, that 13-, out of engagement with; the arma :tul'e D, to allow the armature-lever to vibrate in the usual manner when the appa- It is understood that the apparatus is pro- I posts and wireconnectmns common to Ru mkorfl' or other induction coils, and further description of the same is not deemed necessary;

proper relation to the Bythe arrangement described the faces of Patent the contact-portions D and F while the ap paratus is in use always contact in a strai htne direction to each other, that is, the ace of the contact-portion F interlocks with but a post, and hence the contact-portion was ro-' tated while moving toward and from the other contact-portion on the armaturc-lcver. During this rotation the minute projections on the faces'of the contact-portions F and I D, caused'by the spark of the revious oper:

ation of the ap aratus, ovcrrii c or rub each other and are roken off, and consequently the two faccs of the contact-portions are injured and no longer true, and cause a bad contact and excessively destructive sparking, thus requiring a frequent truing oi the contact-faces and re-adj ustinent of the screw to keep the ap aratus running for any length of time. .l/Vit the. arrangement described, the opposite faces of the contact-portions I)", F contact in a straight-line direction, interlock and are in minute register with each other and without danger of injuring the faces when making the re-adjustment, and as the operator might not possess the mechanical a ility to re-true the platinum faces, the benefit of the im roveinent may be more evident, and thus t 1e apparatus can run as long and as well as in the first operation. It is expressly understood that the projections on the faces of. thecontact-portions '1)", F do not rub against each other orare not ground off, and hence the danger of injury to the, faces of the contactportions D, Ftis eliminated: By the arrangement described, the usual compulsory rc-truing of the contacting,

' faces and consequent waste ofthese expensive latinum portions is entirelyqavoldcd and t e whole operation is simplified.- 5

It is understood that. in electro-niagnetic iapglalatus such as referred to, 'which ,a

u korfi coil is an important element, it is desirable to uninterruptedly have the'Ruhmkorfi coil in action with. the least necessity for re-adjustinent, so as to produce the best results on the object under treatment.

ifl Having thus described 'my invention, I

claim, as new and desire to secure by Letters 1 A Ruhnikorll coil provided with a spnng armaturw lever carrying a contact portwn abar arranged -at-an angle to the sand armature-lever and carrying a contact portion for engagement bythe said armatu're contact ortion, and a bearing-for the said bar to shdel'in and for holding-the bar aga nst turning, to maintain the faces'gof the .s'pid portions at all times in thesame ara 0- e; osition. 1 a ambit as provided was spring armature-lever carrying a, contact portion, a bar arranged at an angle to the said armature-lever and carrying a contact portion for engagement by the said armature contact portion, a bearing for the said bar to slide in and for holding the bar against turning to maintain the faces of the said contact ortions at all times in the same straightiinc registering'position, and a fastening device for securing the bar in place in the said bearing after the desired adjustment is made.

3. A Ruhmkorff coil provided with a spring armature lever carrying a contact portion, a bar carrying a contact portion for engagement by the said armature contact portion, a bearing for the said bar to slide in and for holding the bar against turning, and i a spring pressing against the bar at the end opposite the one carrying the contact-portion.

4. A- Ruhmkorfi coil comprising a coilcylinder carrying the primary andsecondary wires an the core, a spring ar1nature-=. lever fixed at one end and carrying'at its free end an armature located opposite the said' core, a contact ortion on the said armaturelever, intcrme iate the fixed end and the saidarmature, a bar slidable at an angle toward and from the said armature-lever and carrying a contact portion opposite the said armature lever contact portion, and means for the bar to slide in and to hold it against rotation, to maintain the faces of the said contact portions at'all times in the same straight-lineregistering position. 5; A Ruhmkorfi coil comprising a coilcylinder carrying theprimary and second- 1 ary wires and the core, a spring armatureleverfixed at one end and carrying at its free end an armature located opposite the said the said armature and armature-lever in p0- sition while ad'ustingthe said bar in the direction of its icngth.

6. A Ruhmkorfl' coil comprisin cylinder earr ing the primary and a coilsecondary vwires am the core, a spring armaturelever fixed at one end and carrying at its-free end an armature located opposite-the said core, a contact'portion on the said armaturelever, interme iate the fixed endand' the said armature, a slidable bar'carrying'a con; 125 tact portion opposite the said armature-f lever contact portion, means for the bar to slide in and to hold it against rotation, a. spring pressing-the said bar in the direction its length, and retaining means and armature-lever, for hold the said armature and armature-lever for holding the armaturedever in position while adjusting the bar.

- '7. A Ruhinkorlf coil comprising a coilcylinder carrying the primary and secondary, wires and the core, a spring armature-lever fixed-at one end and carrying at its free end an armature located opposite the said core, a

contact ortion on the said armatureflerer, intermediate the fixed end and the said armature, a slidable bar carrying a contact portion opposite the said armature-lever contact )ortion, means for the bar to slide in and to 10l(l it against rotation, a spring pressing the said bar in the direction of its length, and retaining means engaging the said armature the armang the bar, 2;: of a bar v'linder and on between ture-levcr in position while ad v the said retaining means cont fulcrumed on the end of the c: adapted to be swung into, pee;

the said cylinder and the inner face of the armature and armature-lever.

S. A liuhnlkorfl coil having an armaturelevcr contact portion and a contact portion opposite the said armaturcdever contact porlion, and non-rotatable, to maintain the faces.

of the said contact portions at all times in the same straight-line registering position, the said non-rotatable contact portion being adapted to be moved at a right angle toward and from thcsaid armature-lever contact portion.

9. An induction coil provided with aspring armature lever carrying a contact portion,

and. bar arranged at an angle to the said armature leverand earryi a contact portion'having an interlocking acecontaet and a non-turning and a non-rubbing contact with the said armature contact portion.

10. An induction coil provided with a spring armature lever carr ing a contact portion, and aspring-pressed ar arranged at an angle to the said armature lever and carrying a contact portion having an interlocking face contact, and a non turning and a non rubbing contact with the said armature contact portion.

11 An induction coilipro vided with a re the remand while adjusting the said adj ust' able contact.

In testimony whereof I have signed myname to this specification in the presence of two subscribing witnesses.

' JOHN 'MCINTYRE.

Witndsses:

Tnso. G. Hos'raa, JonnP. DAVIS.

operating

Images