USRE12828E - Reissued july - Google Patents

Description

, proved ringer.

Like, o which the following better advantage 1n Fig 5.)

UNITED sTATEs vPATENT OFFICE.

'ELEERT RADOLPH EoRBs, or LAMAR', COLORADO, AssIeNo-R, BY MEsNE'AssIGNMENTs, To

THE DEAN ELECTRIC COMPANY, A CORPORATION OFAOHIO. l

RINGraIi4 FOR TELEPHJONES ANn j Specification of Reissued Letters Patent.r Reissued July 7, 1908. Original No. 809,060,` dated January 2, 1906, Serial No. 232,117.

serial No. 343,368.

Application'for reissue filed December 17', 1906.

,ATO all inkom itl may concern?A Be it known that l, ELBERT RADOLPH HOBBS, a citizen of the United States, and a resident of Lamar, in the county of Prowers and State of Colorado, have invented a new and lm roved Ringer for Telephones and the 1s' a full, clear, and exact description.

My invention relates to electric ringers, and admits of general use, but is of peculiar value on telephone lines.

The purpose of my improvement is to produce a more efficient type of ringer provided with various adjustments and admit-ting of a .number of distinct uses.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a front elevation of my im- Fig. 2 is a side elevation of the same viewed as from the left of Fig. l'. Fig. .3 is a horizontal section upon the line 3 3 of Fig. 1 looking in the direction of the arrow and showing certain arts in plan. Fig. 4 is a perspective view ci) the armature and a part of the means for suspending the same, and Fig. 5 is a perspective view of the L-shaped plate upon which certain adjusting mechanisms are mounted.

The electromagnet lis shown at 6, the

ermanent or polarizing magnet at 7, the bell stems at 8, and the twin bells at 9. The clapperis shown at 10 and the armature of the magnet at 11. vided with trunnions 12 integral therewith and with brackets 13, o positely mounted upon the trunnions. T ese brackets are engaged by pendent leaf-springs 14, secured to the brackets 13 by means of screws l5. head 17 and with brackets 13 19, which engage-the upper ends ofthe springs 14 and are secured to these springs by means of screws 20 21. Two flat members 22 23 are integrally connected togetherV and constitute an L-shaped supporting platef. (Shown to The holes 24 in the member 23 are threaded, and fitted into them are the magnetic cores 25. A vertical slot 26 and two arcuate slots 27. 28 are provided in the member 22. A screw 29,

This armature is pro-v A yoke 16 is integrallyprovided with a.

` passingthrough the slot 27 and a slot 30 in the head 17 and provided Awitha nut 31, is used for adjusting the head 17 relatively to the sup orting late. Another screw 32 passes tiiroughtiie slot 28 and is mounted upon a radially movable arm 33, which, by means of a pivotI 34, `is mounted upon the L- shaped supporting-plate. This arm 33 vis n provided with a slot 35, extending in the general direction of the arm, and passing through this slot and through` the slot 26 is a` pivot 36. An'ear 37 is integralli mounted upon the portion 22 of the sai( L-shaped p at'e and 1s engaged by an adjusting screw 38, which lodges'against a boss 39.,`integral with the head 17. The member 23 of the sup Orting-plate is cut away at 40, as shown in igs. Sand 5. g

The action of my device is as follows: The tension of the springs 14 tends 4to hold the armature 11 in such position that its ends will be equidistant from the magnetic cores 25.` `Any sticking of the armature relatively tothe magnetic cores is thus prevented, and any residual' magnetism which may influence either magnetic core is thus revented from holding the clapper 1 0. in suc osition as to stick to either of the twin ells. It Will be understood, ol course, that in most'ordinary ringers the clapper is liable to stick, so

uthat sometimes an impulse fails to causev the bell to work.f By my arrangement the claper is always held in neutral position and is ree to move in either'direction, according to 'the polarity of the magnet. lf now it-be desired. to move the armature linearer to the magnetic core, the screws 29 and 32 are loosened, the arm 33 is slightl raised, and the screws are tightened. .his angular movement ofthe arm 33 raises the pivoty 36 and causesthe head 17, carryingl with it the yoke 16, to be raisedslightly, so that the armature is nowa little nearerfthe magnetic cores. In doing this neither pole of the armature is drawn nearer to .its appropriate core than is thecase with the opposite pole. If, however, it .be desired` to operate the device as a biasedA ringer, this is accomplished the rpivot-pin-36, lwhichis the center -of the circle of which thearcuate bslot may be considered asa part'. The movement-of the` screw relatively to the slot 27 isftherefore such that within reasonable limits thehead 17 may be swung upon the pivot-pin 36 as a center, and as the voke 16 is integral with the head'17 the brackets 18 19 must necessarily turn to the' same angle. The result is that the free end of the armature 11 is brought into close proximity with the neighboringv magnetic core 25, so that the armature l1 vcan be givena slight inclination in either direction. Thisadjustment, `as Will be observed, is independent of the vertical adjustment of the armature.

By various combinations of the two ad justinen .s above described the armature 11 vnan be made to assume an indeiinite variety ot positions relative' to the magnet and therefore serves to greatly incre, the utility of theV ringer when employed' `in vari-h ous kinds of telephony and for purposes independent thereof.

It will ybe noted that in adjusting the armature relativelyT to the electromagnetic cores 25 it is 'also necessarily adjusted relatively to the perniaiiei'it or polarizing magnet 7.

While I shovv a pair of twin bells actuated by a clapper, l do not limit myself to this `particular acoustic mechanism, for obviously the rocking of the armature may be made to sound an alarm in many other Ways.V Having thus described my invention, l claim as new and desire to secure by Letters Patent 1'. The'couibination of a magnet, a supporting plate, mechanism connected with said supporting-plate and adjustable relatively thereto, said mechanism being provided with. brackets, springs connectedy with said brackets and depending therefrom, an armature mounted upon said springs and free to rock by the resilience thereof, and means for adjusting the position of -said brackets relatively to said supporting-plate.

2. The combination of a magnet, `a supporting-plate disposed adjacent thereto and provided with a slot, a yoke provided with a portion disposed adjacent to said supportingplate andv provided with a fastening member extending through said slot for the pur )ose of enabling said portion to be adjuster: to different angles relatively to said supportingpla-tes, springs connected with said yoke and depending therefrom, an armaturev mounted upon said s rings and free to vibrate by the resilience t iereof, a clapper mounted u'pon said armature and adapted to be actuated Y thereby, and a bell to be struck by said armature. j I The combi-nation of 4a magnet, a supporting-platedisposed adjacent thereto', a

`-yoke provided with a head disposed adjacent v"to said su i iortine- )late means for ad ustine l D 7 C said head relatively to said supporting-platc,

"brackets mounted -upon said read and upon E'said yoke respectively, springs adjustably mounted Within said brackets and depending therefrom, an armature mounted upon said springs,l a clapper supported by said anims ture, and bells to be struck by said clapper,

4. The. Acombination of a magnet, a sup porting-plate disposed adjacent thereto, an arm niou nted uponsaid supporting-plate and provided with a' slot, a yoke supported by said supporting-plate and provided with a head, a member mounted uponsaid head and projecting through said slot in said arm` means for moving said arm into different radial positions for the purpose of adjusting said head relatively to said supporting-plate.

springs connected with said head and with said yoke, an armature mounted upon said springs, a clapper connected with said ernia ture and actuated by movements thereof` and bells ,to bestruck by said clapper.

5. The combination of a bracket provided with a slot and with a boss, an adjusting plate provided witlia slot ncirclingsaid boss,l and with a. slot lcrossing said slot iiifsaid bracket, a bolt 'passing through thetwo l slots thus crossed., means for clamping said bolt relatively to said bracket and` said adjusting plate so as to hold-the latter vin pref determined Afixed positions, a. rocking arma-- ture supported by said adjusting plate, and

magnetic mechanism for actuating` said armature.

46. In a telephonej ringer, the combination of a pair of electroni-aguets, voke of niagnetic materia-l connecting ad`acent ends of the elec-tromagnets, a pair 'oliA gongs i'igidlv supported from such yoke, a plate supported such resilient supporting means relatively to such plate tovary the magnetic eti ort exerted upon-the armature by a given cnergizin current in the elec-tromagnets.

7. ln a telephone ringer, the combination of a pair of electromagnets, ayoke of inagnetic material connecting adjacent ends of `the. electromagnets", a. airof gongs rigidly supported from such yo (e, a plate supported .from the effective ends of such electromagncts, an armature supported in operative relation to the effective poles by resilient means carried by .such plate, a clapper carried by the armature and adapted to strike the 'gongs, such resilient means adapted to maintain the chipper between and out of Contact with the gongs when the electroinag nets are not energized, and means for ad- .justin g such resilient supporting means angularly relative to such plate to equalize the v'from the effective ends of such electromagl magnetic efforts exerted by the two effective of a pair of e ectromagnets, a yoke of magi netic materialA connecting ad'acent ends of' the electromagnets, a air o gongs rigidly supported from rsuch yoii from the effective ends of such 'electromagn'ets, an armature supported in 0 erative relation to the effective poles by resi ient means carried by sucli plate, akclapper carried by the armature and adapted to strike the gongs, such resilient means adapted to maintain the clapper between and out of contact with the gongs when tlie electromagnets are netz-energized, and means for adjusting suoli resilient supporting means angularly relative to such plate to render unequal the ma netic efforts exerted by the two effective po es upon the armature by a given energizing current in the electromagnets.

9. In a telephone ringer, tlie combination of a pair of electromagnets, a 'yoke of mag` netic material connecting adjacent ends of tlie electromagnets, a pair of gon s rigidly supported from such yoke, a pfate supported from the effective ends of such electromagnet, an armature supported in operative relation to the effective poles by resilient means carried by such plateJ a permanent magnet for olarizing tlie armature, a clap er carried byt ie armature and adapted to strike the gongs, sucli resilient means adapted to move the armature to its intermediate or norma] position after each current impulse when the electromagnets are energized by means of alternatingr currents, and means f or adjusting such resilient supporting means relatively' to sucli plate to vary the magnetic effort eX- erted upon the armature by a given energizing current in the electromagnets.

10. In a telephone ringer, the combination of a pair of electromagnets, a yoke of magnetic material connecting adjacent ends of the electromagnets, a pair of gongs rigidly supported from such yoke, a plate supported from tlie effective ends of such electromagnet, an ,armature supported in operative relation to the effective' polesby resilient means carried by sucli plate, a permanent magnet for polarizing the armature,

a clapper carriedby tlie armature and adapted to strike the gongs, sucli resilient means ada )ted to move the armature to its intermediate or normal position after. eacli current impulse when the electromagnets are energized by means of alternating currents,

and means for adjusting sucli resilient sup-V porting means @angular y relative to such plate to equalize the magnetic efforts exerted )y tlie two effective poles upon the armature by a given energizing current in the electromagnets.

11. In a telephone ringer, the combinae, a plate supported tion of a pair of electromagnets, a yoke of magnetic material connecting adjacent ends` of the electromagnets, a. 'pair' of gongs rigidly sup orted from suchl yoke, a plate supported rom the effective'ends ofsuch electromagnet, 'an armature supported 1n operative relation to the effective poles by resilient means carried by such'pla'te, a permanent magnet for olarizing the armature,

av clapper carried yvtlie armature and 75 adapted to strike the gongs, such resilientl means adapted to move the armature to its intermediate or normal position after each current impulse whenv the electromagnets are energized by means of alternating currents, and means for adjustin such resilient supporting means angularIy relative to such plate to render unequal the ma netic ,efforts exerted by the two effective po es upon the armature by a given energizing current in the electroma nets.

12. In a te ephone ringer, the combination of a'pair ofelectromagnets, a yoke of ma iietic material connecting adjacent ends oft e electromagnets, a pair ofgongs rigidly supported from such yoke, a platesupported from the effective ends of such electromagr nets, an armature supported in o' erativ-e relation to the effective poles by resilient means carried by sucli plate, a clapper carried by the armature and adapted t0 strike the gongs, suoli resilent means adapted to maintain the clapper between and out of contact` with the gongs when the electromagnets are not energized, means for adjusting sucli resilient supporting means relativey to such plate to vary the magnetic effort exerted upon the armature by a given energizing current in the electromagnets, and clamping means for holding such resilient supporting' 105 means in any desired adjustment.

13. In a telephone ringer, the combination of a pair of electromagnets, a yoke of ma netic material connecting adjacent ends of t e electromagnets, a pair of gongs rigidly i supported from sucli yoke, a plate supported, from the effective ends of sucli electromagnets, an armature supported in operative re- -lation to tlie effective poles b f resilient means carriedby such plate, a cjapper carried by thearmature and adapted to strike the gongs, vsuoli resilient means adapted to maintain the/"clapper between and out .of contact with the gongs when tlie electromagnets are not'energized, means for adjust- 120 ing such resilient supporting means angularly relative to sucli plate to equalize tlie magnetic efforts exerted by the two effective poles upon the armature by a given energizing current'in the electromagnets, and clamp- 125 ing means for holding such resilient supporting means in any desired adjustment.

14. In a telephone `ringer, tlie combination of a pair of electromagnets,'a yoke of magnetic material connecting adjacent ends 13o vofY the eleetreniagnets, a pair of gongs rigidly .supp'orted from such yoke, a plate supported the magnetic efforts exerted by the two el'eetive poles upon the armature by a given energizing current 1n the eleetroinagnets,

and clamping means for holding such resilient supporting means in any desired adjustine-nt.

In witness whereof I have hereunto set my hand in the presence of two subscribing 'Witnesses this 19th dav ol November 1906. f

vELBERT HADOLPH HOBBSf Witnesses:

A. M. ODoNNELL, W. E. FEE.

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