US919578A - Relay. - Google Patents

Description

G. H. HILL.

RELAY. APPLICATION FILED SEPT. 28, 1908.

Patented Apr. 27, 1909;

INVENTUR H. HILL.

WiTNEfiEEEL' BEDRGE UNEE, srrrrns sconce n. BILL, or soil earner enrich.

ENEOTADY, NEW YORK, ASSIGNOH 'lO GENERAL IlLEC'lRlO M- PANY, A CORPORATION OF NEW YORK.

so. creme.

Specification of L etters Patent. Patented April 27, 1909.

Application filed September 28, 1903. Serial No. 4155,1423.

T 0 all whom it may concern:

Be it known l, GEORGE H. HILL, a

citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful improvements in Relays, of which the following is a specification.

My invention relates to relays for use in connection with railway signal systems and its object is to guard against a false indication caused by a relay being tipped over.

Relays for railway signal work are ordi- 'narily so arranged that the armature is 3 armature may be left in the position tore but arrange moved to one position by the magnet coils when energized and to another position'by gravity when the magnet coils are decncrgized. Gravity is ellective to move the armature away from the magnet coils only as long as the rclay stands in an upright position. Cases have occurred where a relay has been tipped over either by wanton mischief or by an accident, such, instance, as by heavy snow being forced against the relay box by a snow plow. In such a case the to which it is moved by the magnets, even thongh the magnets deenergized, and a false clear signal may result.

My invention consists in providing means normally inoperative for moving the aroma ture, ii the relay is tipped over, to the position to which it is normally moved by gravity, More specifically stated, I provide a weight supported out of engagement with the armad to be moved into engagement with the armature if the relay is tipped over.

My invention will best be understood by reference to the accompanying drawings, in which Figure 1 shows a side elevation, partly in cross-section, of a relay arranged in accord ance with my invention; Fig. 2 shows a plan view of the same with the magnet-coils and the upper part of the casing removed, and Fig. 3 shows a modification of the structure. In the drawings, A represents the magnet coils, and B the armature, which is pivoted 'to the pole pieces of the magnet coils. The armature carries the contacts C, which are connected through the flexible leads 0 to suitable binding posts, and which, when the magnet coils are energized to attract the armature, are rnoved into engagement with the l i l or, stationary contacts D. When the magnet 1 coils are deenergized the armature and contacts are returned by gravity to the position shown. The relay, armature and contacts are inclosed as usual'in a suitable casing.

lt \vill'be seen that ii the relay were tipped over onto its side the weight of the armature and contacts would no longer be effective to move the armature away from the magnet coils. To prevent a false clear indication. which might otherwise arise from this cause, I provide a weight E, which, in Figs. 1 and 2, is shown freely casing.

F is a strap secured to them-mature B and extending over, but out of engagement with, the weight if the relay should be tipped over, the weight E Wouldswing on its support so as to engage the strap and force the armature and contacts into the position to which they are normally moved by gravity.

in Fig. 3 the weight E, insteadof being suspended from the top of the casing, is supported from the bottom of the casin in a cup G, adapted to allow the weight toro ll against the strap it if the relay is tipped over.

I do not desire to limit myself to the particular construction and arrangement of parts shown, but aim in the appended claims to cover all modifications which scope of my invention.

EVhat I claim as new and desire to secure by Letters Patent of the United States, is,-

1. In combination with a relay comprising magnet coils, armature, and contacts, a device normally inoperative but ada ted to engageand move said armature if t e relay is tipped over. I

2. In combination with a relay comprising magnet coils, an armature arranged to be moved to one position by said coils when onergized and to another position by gravity when said coils are deenergized, and contacts actuated by said armature, means for moving said armature, if the relay is tipped over, to the position to which it is normally moved by gravity.

3. lnlcombination with a relay comprising magnet coils, armature, and contacts, a weight supported out of engagement with said-armature but movable into engagement therewith if the relay is tipped over.

a. In combination with a relay comprising magnet coils, an armature arranged to be moved to one position by said coils when energized and to another position by gravity are within the v when said coils are denergized, and contacts In Witness whereof, I have hereunto set actuatlcPby said armature, a weigilt supmy hand this 26th day of September, 1908.

orte out of en a ement Wit sai armaq T gure but movable ini engagement therewith I f E HLJL if the relay is tipped over and adapted to move said armature to the position to which is normally moved by gravity.

Witnesses:

BENJAMIN B. HULL, MARGARET ,E. WOQLLEY.

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