US349579A - John geaey - Google Patents

Description

(No Model.;

J. GEARY.

ELECTRIC ANNUNGIATOR.

No. 349,579. Patented Sept'. 21, 1886.

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' UNTTE STATES JOHN GEARY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO J. ELLIOTT SHAV, OF SAME PLACE. A

ELECTRIC ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 349,579, dated September 21, 1886.

Application filed November 25, 1885. Serial No. 153,932. (No model.)

.To all whom, it may concern.-

Be it known that I, JOHN GEARY, a citizen of the United States, residing at Philadelphia, in the county of` Philadelphia and State of Pennsylvania, have invented certain new and useful Improvementsin Electric Annunciators; and I do hereby declare the following to be a full, clear, and exact description cf theinvention, reference being had to the accompanying drawings, which form part of this specification, in which- Fignre l is a front elevation, and Fig. 2 a side or end elevation, partly in section, of an annunciator embodying my improvements. Fig. 3 isaplan of the same, and Fig. 4 a detail elevation of a modication.

My invention has for its object to simplify the construction of electric 'annunciators and similar electric devices, so as to reduce the expense and diminish the area orspace occupied by the same.

A further object of my invention is to improve the efficiency of the class of devices to which my invention relates, so as to render them more certain in operation and lnore durable than heretofore.

My improvements consist in the peculiar construction and combination of parts hereinafter fully described, having reference principally to the following: First,to providing the magnet-core with a pin or projection of diamagnetic material which forms a guide and support for an armature, second, to the combination, with a magnet-core having a diamagnetic pin, of an armature fitted thereon in such manner that it will slide on said pin when the magnet is energized and deenergized, third, to the combination, with amagnet-core, of a diamagnetic pin tted therein at an oblique angle with reference to the axis of the core and an armature arranged to slide onvsaid pin, as hereinafter setforth, fourth, to the combination of a magnet having a projectingcore, a diamagnetic pin fastened in said core atan angle to the axis of the latter, a sliding armature on said pin, and a drop or plate adapted to slide on a guide, and to be supported in an elevated position by the armature, as hereinafter set forth; fifth, to the combination, with the magnets of an annunciator or equivalent electric indicating device, of bracket-supports therefor constructed so as to be fittedto arod, and having arms to which the magnets are fitted; sixth,

to the combination,in an annunciator or equivalent electric indicating device, of posts upon which are mounted brackets that form supports for magnets, and guide-rods upon which drops or plates are fitted and slide 5 seventh,

to certain details of construction hereinafter fully described.

Referring to the accompanying drawings,

A represents a vertical post or iron rod,which isdesigned and adapted to be fastened at its ends in the top and bottom, respectively, of the case or frame of an annunciator or equivalent electric indicating device or appliance.

B and B are brackets fastened to the post A by set-screws b b, which will permit their adjustment at any altitude. These brackets have central hubs,b b,and arms b2 b2, in which are secured the ends of rods C C, which form guides for drops or plates c c.

On the brackets BB are sustained magnets D D, which are preferably arranged with their cores vertical. On the postA are other brack- 7 5 ets similar to the top and bottom brackets, B B', but withouttheprojecting arms b2 b2, which receive the guide-rods, and these brackets also support other magnets D.

The cores E of the magnets project or eX- 83 tend beyond the headsf of the surrounding helices or spools F, andtheir ends are beveled, as shown. In these beveled ends are fixed pins g, of brass or other diamagnetic material, which pins have heads g at their lower ex- 85 tremities. Brass screws with smooth shanks from the heads g to the ends of the magnetcores in which they are inserted may be used for pins, which will permit or provide for adjustmentof thearmatures. On these pins are 90 armatures H PI. These armatures are iron blocks of any suitable shape having central openings by means' of whichthey are fitted on the pins g, said armatures being of` such length and their openings of such diameter 95,'` that they will freely slide on said pins or may be readily moved to and from the magnetcores.

I prefer to make the armatures cylindrical or circular, with rims 7L, beveled on their inner roo sides at h', so as to form better bearings for the lower edges of the drops c c, which rest thereon. Normally the armatures are down on their pins and as far from the ends of the cores as the heads g will allow, and the drops are elevated, with their lower edges resting on the beveled rims of the armatures.

Then amagnet is energized, its armature is magnets may be fitted Very closely together, 1

and the annunciator will not occupy as much lateral space or depth as heretofore required. The case or frame of the annuneiator may consist merely of the top, bottom, sides, and front, and the horizontal Wooden bars heretofore employed as supports for the magnets may be dispensed with. Such wooden bars are liable to warp, expand, and bend, owing to climatic o r atmospheric influences, and the substitution of iron rods obviates this defect. rlhe magnets may be very readily adj usted on the iron rods, and as the guide-rods for the drops are fitted in the topand bottom brackets and the latter are secured to the posts itfollows that if there should be any lateral deflection or displacement of a post the parallelism of the magnets and drops or the distance between the latter and the armatures will not be altered, or, in other words, a lateral movement of the post will move the guide-rods, drops, magnets, and armatures correspondingly.

Retaining the general construction already described, and only slightly modifying the indicator, an index or rotating finger or needle may be substituted for the sliding` drops or plates previously mentioned. Fig. 4illustrates this modification, in which K is a finger, pivoted at k on a rod, It, so as to rotate or swing in a vertical plane. One end, L2, of this finger is weighted and normally rests, when the magnet is inert, on the armature. Vhen the magnet becomes active, the armature is attracted away from the weighted end of the finger, and the latter swings into a vertical position.

Vhat I claim as my invention isl. The combination, with an electro-magnet having a pin of diamagnetic material projecting from its core, of an armature fitted on said pin and adapted to slide thereon, substantially as shown and described.

2. The combination, with an electro-magnet having a pin of diamagnetic material attached to its core and projecting therefrom at an acute angle to the aXis of said core, of an armature fitted on and constructed and adapt-v ed to slide upon said pin, substantially as shown and described.

3. The combination, with an electro-magnet having a projecting core with beveled end and a pin of diamagnetic material fastened in such end, of a sliding armature on said pin and a drop or slide for which said armature forms a support, substantially as shown and described.

4. In an electric annunciator, the combination of an electro-magnet, a sliding armature fitted on a pin projecting from the core of said magnet, and a drop, plate, or indicator supported or held in position by said armature when the magnet is deenergized, substan tially as shown and described.

, 5. In an electric annunciator, the combination of a vertical post and magnet-supporting brackets mounted thereon, said brackets having central hubs through which the post passes, and arms to which the magnets are affixed, substantially as shown and described.

6. The combination, in an electric annunciator, of a post and brackets secured to said post, said brackets having arms on which magnets are sustained,with guide-rods secured to said brackets, substantially as described and shown.

7. In an electric annunciator, the combination, with a vertical post, of a magnet-supporting bracket secured to and adj ustablc on said post, substantially asl shown and described.

8. In an electric annunciator, the combina` tion of vertical posts, brackets mounted on said posts, magnets fastened to said brackets having their cores vertical, pins projecting obliquely from the cores of said magnets, slidi'ng armatures supported on said pins, guiderods fastened in said brackets, and drops or indicators on said guide-rods and upheld by said armatures when their magnets are de'- cnergized, said parts being constructed and combined for operation substantially as shown and described.

9. The combination, with a magnet having a pin, g, projecting obliquely from its core, and drop or indicator c, of sliding armature II, having beveled rim on which said drop or indicator rests when thc magnet is deener gized or inert, substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 18th day of November, 1885.

JOHN GEARY.

Vitnesses:

WILL H. POWELL, R. DALE SPARHAWK.

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