US823086A - Alternating-current-translating device. - Google Patents

Description

PATENTED JUNE 12, 1906.

L. H. THULLBN. ALTERNATING CURRENT TRANSLATING DEVICE.

APPLICATION FILED OOT.13.1903.

3 SHEETS-SHEET 14 .OKW

10% ZiWZm PATENTED JUNE 12, 1906.

v L..H. THULLBN.

, ALTBRNATING CURRENT TRANSLATING DEVICE.

APPLICATION FILED 0GT13. 1903.

3 SHEETS-SHEET 2.

{ 0 9 a M m a 0M Mu 3 mm 52/ I 1b f w; e B

PATENTED JUNE 12 L. H. THULLEN. ALTERNATING OURR VICE.

BNT TRANSLATING DE APPLICATION FILED 0011s, 1903.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

LOUIS II. THULLEN, OF EDGEWOOI), PENNSYLVANIA, ASSlGNOlt TO THE UNION SWl'lOll AND SIGNAL COMPANY, OF SWlSSVALE, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

Specification of Letters Patent.

ratenteo. June 12. 1906.

Application filed October 13. 1903. Serial No. 176,836.

To all whom it may concern.-

Be it known that I, LoUIs H. THULLEN, a citizen of the United States, and a resident of Edgewood, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Alternating- Current-Translatin Devices, of which the following is a specii ication.

My invention relates to alternating-currenttranslating devices.

In the drawings I have illustrated my invention in the form of a relay, but it will be understood that it may be applied to any device which is designed to translate alternating-current energy into some other form of energyfor example, mechanical motion.

I will describe an alternating-current-translating device in the form of a relay embodying my invention and then point out the novel features thereof in claims.

In the accompanying drawings, Figure 1 is a side elevation of an alternating-current relay embodying my invention. F1g. 2 is a horizontal sectional view of the relay shown in Fig. 1, the section being taken on the line 2 2 and looking in the direction of the arrow. Fig. 3 is'a view partly in elevation and partly invertical section, the section being taken on the line 3 3 of Fig. 2. Fig. 4 is a similar view taken on the line 4 4 of Fig. 2. Fig. 5 is a detail sectional view. Figs. 6, 7, and 8 are each detail views of parts'comprised in the relay of Figs. 1 to 5.

Similar letters of reference designate corresponding parts in all of the figures.

The mechanism or parts comprised in the relay are inclosed in a suitable casing consisting of a top plate a, a bottom plate a, and a wall a. The wallet is preferably of some transparent materi alfor example, glass. The several parts of the caslng are secured together by means of bolts 0 The relay comprises a core, an energlzlng coil or coils, and a movable part, in effect an armature, which moves in one direction in response to the effects of an alternating current in the coil or coils and moves in a reversedirection in response to gravity or mechanical means when no alternating current is passlng through the coil or coils. The reverse movements of the movable members are utilized to make and break contacts included in elec tric circuits and by such make and breaks to open and close'theoircuits of said contacts.

the two coils are preferably in series. The

ends of the core are rovided with lateral extensions b (See igs. 6 and 8.) The purose of these extensionsb b is to provide a arge area at the poles of the core and reduce the reluctance produced b the air-gap between the ends of the core to the magnetic circuit of the core.

C designates the movable member or armature of the relay, which is made from some non-magnetic materialsuch, for example, as aluminium. It is shown as being segmental in shape and as being carried by arms 0, radiating from a shaft 0. It extends between the ends of the core B, and it is moved, and with it the shaft 0, in one direction by the efiects of an alternating current flowing through the coils B B rents flowing through the coils B B generate lines of force in the core B, which cutting the metal bands I) set up in each of the bands an induced current,'which induced currents, however, are of a different phase -or are out of step with the current flowing through the coils B B The induced currents in the bands 1), generate lines of force in those (parts .ofthe core which they embrace, an these lines of force. generate edd y a bracket or brackets- Alternating curcurrents 'on the movable member 0. T e

lines of force generated in the core B by the coils B B which are displaced with reference to the lines of force generated by the induced currents in the band, also generate eddy-currents on the movable member C. These eddy-currents will be of such polarity and direction relative to the currents in the core B as to cause the member 0 to rotate with its shaft. The principle involved herein is substantially the same as the rinciple involved in most alternating singI e-phase motors and in some alternating-currentmeasuring instruments. In order that the maximum effect of the eddy-currents on the movable member be obtained, slots 0 are provided in the movable member in order that the path of the eddy-currents be lengthened in parallel paths on the member C rather than in circular paths, which would be the case Without the slots. By having these eddy-currents paralleled on the member C they will cut the lines of force produced in the core B b the coils B B and bands I) at such ang e as to produce the maximum tor ue on the member C. The shaft 0 is pre erably a crank-shaft and is journaled at its, end on pointed screws 0 c, which are adjustable in hangers c 0, depending from the top (1 As shown, it is provided w th :two crank portions 0 a, the purpose of whlch s to allow the points of contact of the circuit or circuits which the relay is to control to be located close to the center of rotation of the shaft 0'. The purpose of having the points of contact close to the center of rotation of the shaft 0 is that more pressure is obtained in making the contact than'would be obtained were the cont-acts farther away from the center, for the relative distance between the'contacts and the center of rotation and.

the member C and the center of rotation is about the maximum.

The contact-points controlled by the rotation of the member C each comprises a carbon or other point 0", which is carried by a binding-post c and a suitable spring contact-plate c, which plate is suitably fixed on acrank c or c of the shaft. Each contactspring is electrically connected to one end of a coiled spring 0. coiled spring is electrically connected witha binding-post c. The spring contact-plate c is suitably held between insulating-rings c, and the coiled spring 0 is carried by a ring or collar of insulation 0". c designates binding-posts for the terminals of the coils So long as alternating current flows through the coils B B the contacts made by the pairs of carbon-points and spring contactplates will be closed, as the member (I will be held elevated (see Fig. 5) by the effect of the alternating current in the manner hereinbefore set forth. When current is cut off from. the coils, the member 0 Wlll rotate down- Ward against a stop 0", and thus break the contacts.

11 designates an adjustable counterweight,

The other end of the which is provided on the shaft 0, the purpose 'of which is to counterbalance principally the movable member C. By adjusting the counterbalance the relay may be made more or less sensitive of electrical energy traversing the coils.

My invention is applicable in all or a part translating devices, especiall where a part is rotated or partially rotated by reason of a shifting magnetic field produced by alternating currents of different phases.

What I. claim as my invention is 1. In a translating device, the combination of electromagnetic means, a movable member provided with radial slots for lengthproduce on said movab emember by the elecand broken by the movement of said movable member.

2. In an alternating-current relay, the combination of a movable member operated in one direction by electromagnetic means when affected by an alternating current, and contacts made and broken by the movement coiled springs. I

3. In an alternating-current relay, the

ated in one direction by electromagnetic means when affected by an alternating cur rent, a crank-shaft upon which said'member is supported, and contact-pointslocated near the center of rotation or said shaft.

4. In an alternating-current relay, the combination with a movable member operated in one direction by eletromagnetic means when affected by an alternatingcurrent, a crank-shaft upon which said member is mounted, contact-points located near the carried by said shaft.

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

1 LOUIS ll. TllULLEN W'itnesses:

SADE BERARD,

GEO. E. Cause of its features to other alternating-current-' ening or aralleling the ath of eddycurrents tromagnetic means, and contact-points made.

of said member, said contacts comprising center of rotation of said shaft-and spring-' plates comprised 1n sald contact-points and combination with a movable member oper-

Images