US1969055A - Relay - Google Patents

Description

J. E. WILLING v Aug. 7, 1934.

RELAY.

Filed Sept. 30 1951 2 Sheets-Sheet J. E. VVILLJPQCS Aug. 7, 1934.

RELAY 2 Sheets-Sheet Filed Sep. 30, 1931 Fla. 3.

CLX

f/ATTORNEY Patented Aug. 7, 1934 UNITED STATES amr Joseph E. Willing, Rochester, N. Y., assigner to General Railway Signal Company, Rochester,

Application September 30, 1931, 'Serial No. 565,939 17 Claims. (Cl. 175-335) 'Ihis invention relates in general to relays, and has more particular reference to a relay for railway use having special pick-up and drop-away characteristics.

In many cases it is desirable to have a polar neutral relay having a neutral armature either slow to release, or slow to pick up, or both, and with this idea in mind, it is proposed, in accordance with this invention, to produce a relay having these characteristics.

More specically, it is proposed to have an inductively energized retaining winding which operates to retain a neutral armature in picked up position, when it is already picked up, and to retain it in released position, when it is allready released.

Further objects, purposes and characteristic features of the present invention will appear -as the .description progresses, reference being made to the accompanying drawings, showing, in a wholly diagrammatic manner, andA in no manner in a limiting sense, one form which the invention can assume. In the drawings:-

Fig. 1 is a side elevational view, with parts shown in section, of a relay in accordance with this invention.

Fig. 2 is a plan View of the relay.

Fig. 3 is a fragmentary and elevational View, with parts shown in section.

Fig. 4 is a fragmentary plan View of the neutrai armature arrangement.

Referring now to the drawings, a relay embodying the present invention can include a casing having sides 1, preferably of transparent material, with a base 2 and a top plate 3, al1.con nected together by screws or the like 4.

Carried by the top plate 3 are two cores 5 and 6, with each core carrying an upper winding 7 and a lower winding 8. The windings 7 and 8 are electrically insulated from each other, but are inductively associated, and instead of being one above the other, may be wound one on top of the other, if desired.

Also carried by the top plate 3, are two cores .9'and 10, carrying windings 11, which are connected in series with each other and with the two lower windings 8, whereby any current induced in the windings 8 flows through the windings 11.

Within the casing 1 is a polar armature 12, pivoted at 13, and operable to actuate an arm and contacts 14, all substantially as shown more in detail in the patent to O. S. Field, 1,749,331 granted March 4, 1930. Y

-Pivoted at 28, is a neutral armature 15, to which is connected an articulated contact finger 16, having a front contact 17 and a back contact 18 for respectively cooperating with iixed front and back contacts 19 and 20, all substanovtially as in the Field patent, above referred to.

As shown most clearly in Fig. 4, the neutral armature 15, has connected to it twoforwardly extending arms 21, of angular form in cross section, and preferably made of aluminum or other lightweight and non-magnetic material. To the free ends of the arms 21 is connected a retaining neutral armature 22, which cooperates with poleshoes 23 of the cores 9 and 10.

Positioned against the pole shoes 23 so as to bein good magnetic connection therewith,are magnetic bridge members 24 which are of a general U-shape in section, and which are held against turning on the pole pieces, by an elon- 4gated channel member 24l and within the loop of which the armature 22 operates.

The two windings 7 are connected in series to an external energizing circuit, as by wires 25 and 26, while the two lower windings 8 are connected in series with each other and with the retaining windings 11, as by means of wires 26 and 27.

From the above it follows that upon change of any ux conditions in the windings '7, a Voltage is induced in the windings 8, to thereby cause current to flow through the windings 8 and the retaining windings 11, to magnetize cores 9 and 10. If the retaining armature 22 be picked up at the time current ows in the windings 11, these windings tend to retain the armature in pick-up position. armature 22 be in released position, at the time current iiows in the windings 11, then, due to the bridge members 24, there is a tendency to retain the armature 22 in released position.

Thus, on energizing the windings 7, the retaining windings 11 make the neutral armature 15 and its connected armature 22 slow to pick up. Conversely, on de-energization of the windings 7, the retaining windings 11 cause the armature 15 and connected armature `22 to be slow to release.

The bridge members 24, formed otmagnetic material, in eiect carry the pole shoes 23 to a position below the retaining armature 22, whereby the single windings 11 are effective to produce pole shoes both above and below the armature 22, whereby to -produce a tendency to retain the armature 22 in whatever position itmay be at the time current changes take place in the energizing windings 7 ofthe relay. i

It is clear that the various parts can be varied in position, size and material to obtain various timings and delay effects without departing from the lspirit of this invention.

Furthermore, the above rather specific description of one form of device embodying the present invention, has been given solely by way of illustration, and is not intended, in any manner whatsoever, in a limiting sense. Obviously, this invention can assume many different physical On the other hand, if the forms, and is susceptible of numerous modifications, and all such forms and modifications, are intended to be included by this invention, as come within the scopelof the appended claims.

Having describgd my invention, I now claim:-

1. In a relay, n armature, an operating winding for the armature, a retaining winding energized from the operating winding when energized, and means whereby the retaining winding always opposes the action of the operating winding on the armature.

2. In a relay, an armature, an operating winding for the armature, a retaining winding energized from the operating winding, and means whereby the retaining winding retards the pickup, and also the drop-away, of the armature.

3. In a relay, an armature, an operating winding for the armature, a retaining winding energized from the operating winding, and means whereby the retaining winding when energized produces magnetic poles both above and below the armature to thereby tend to retain the armature in its then position.

4 In-a relay, in combination with an armature and an operating winding for picking up and releasing the armature, a retaining winding connected to be energized upon current changes in the operating'winding, and pole pieces energized by the retaining winding and positioned to hinder pick-up and release of the armature.

5. In a relay, a pivoted armature, an operating Winding for the armature, a retaining winding spaced from the operating winding and arranged to be energized during ilux changes in the operating winding, pole pieces positioned above the armature and energized by the retaining winding, and pole pieces below the armature and magnetically connected to the rst pole pieces.

6. In a relay, a pivoted armature, an operating winding for the armature, a retaining winding spaced from the operating winding and arranged to be energized during iiuxchanges in the operating winding, pole pieces positioned above the armature and energized by the retaining winding, and magnetic bridge members magnetically connected to the pole pieces and extending below the armature.

'7. In a relay, a pivoted armature, an operating winding for the armature, a retaining winding spaced from the operating winding and arranged to be energized during flux changes in the operating winding, pole pieces positioned above the armature and energized by the retaining winding, and U-shaped bridge members of magnetic material extending from the pole pieces to a position below the-armature.

8. In a relay, a main armature, a retaining armature, elongated spaced rigid angle" members 'of light weight non-magnetic material connecting the two armatures in spaced relationship, an operating winding for the main armature and a retaining winding having its energization dependent upon the operating winding and positioned to operate on the retaining armature.

9. In a relay, a main armature, a retaining armature, elongated spaced rigid angle members of light weight non-magnetic material connecting the two armatures in spaced relationship, an operating winding for the main armature, a r`etaining winding having its energization dependent upon the operating winding and positioned to operate on the retaining armature, and pole pieces both above and below the retaining armature and energized by the retaining winding.

10. In a direct current relay, in combination, an armature, an operating winding for the armature energizable with direct current, a retaining winding energized from the operating winding, and means whereby the retaining winding retards the pick-up, and also the release, of said armature.

11. In a direct current relay, an armature, an operating winding for the armature, a retaining winding energized from the operating winding, andmeans whereby the retaining winding retards the pick-up, and also the drop-away, of the armature.

12. In a direct current relay, an armature, an operating winding for the armature, a retaining winding energized from the operating winding, and means whereby the retaining winding when energized produces magnetic poles both above and below the armature to thereby tend to retain the armature in its then position.

13. In a direct current relay, in combination with an armature and an operating winding for picking up and releasing the armature, a retainingl windingy connected to be energized/upon current changes in the operating winding, and pole pieces energized by the retaining winding and positioned to hinder pick-up and release of the armature.

14. In a direct current relay, a pivoted armature, an operating winding for the armature, a retaining winding spaced from the operating winding and arranged to be energized during iiux changes yin the operating winding, pole-pieces positioned above the armature and energized by the retaining winding, and pole piecesbelow the armature and magnetically connected to the rst pole pieces.

15. In a direct current relay, a pivoted armature, an operating winding for the armature, a retaining winding spaced from the operating winding and arranged to be energized during ilux changes in the operating winding, pole pieces positioned above the armature andenergized by the retaining winding', and magnetic bridge-members magnetically connected to the pole pieces and extending below the armature.

16. In a direct current relay, a pivoted armature, an operating winding f or the armature, a retaining winding spaced from the operating winding andA arranged to be energized during flux changes in the operating winding, pole pieces positioned above the armature and energized by the retaining winding, and U-shaped bridge members of magnetic.material extending from the pole pieces to a position below the armature.

1'7. In a direct current relay, a main armature, a retaining armature,4 elongated spaced rigid angle members of lightweight non-magnetic-material connecting Athe two armatures in spaced relationship, an operating winding for the main armature, a retaining winding having its-ener gization dependent upon the operating winding and positioned to operate on the retaining armature, and pole pieces both above' and below the retaining armature and energized by the retaining winding.

JOSEPH E. WILLING.

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