US829381A - Electric bell. - Google Patents

Description

8. A. BEYLAND.

ELECTRIC BELL. APPLICATION rmm APR.22.1904.

PATENTED AUG. 28, 190.6.

UNITED STATES SIDNEYA. BEYLAND, OF ELYRIAQOHIO ASSIGNOR TO OF ELYRIA, OHIO, A CORPORATION OF OHIO.

TRIO OOMPAN Y,

PATENT OFFICE.

THE DEAN ELEC- ELECTRIC BELL.

Specification of Letters Patent.

fatented Aug. 28, 1906.

To all whom/it may concern:

Be it known that I, SIDNEY A. BEYLAND, a citizen of the United States, residing at Elyria, in the county of Lorain and State of bio, have invented certain new and useful Improvements in Electric Bells, of which the following is a specification, reference being had herein to the accompanying drawings.

My invention relates to bells, and particularly to those in which it is necessary to adjust the position of the gongs with relation to the clappers or other parts.

It is the object of my invention to rovide means for such adjustment which s all be simple, efficient, and eas to manipulate and which at the same time s iall permit of a considerable variation in the size or positionof the gongs.

I attain my object by mountin each upon a pivoted sup ort, preferab y attache to the frame of the ell, and making this su port irregular in shape, so that it Will aflor a certain playrin one direction .and when r versed will afford. the same amount of play in the other direction. A double amount of motion is thus secured without changin the parts and without sacrificing delicacy 0 adustment.

In all bells it is essential that a certain amount of ad'us'tment shall be provided for between the c apper or striker and that art of the gong u on which it impinges. hile I recognize t e fact that my invention is thus applicable to bells which are operatedb mechanical means as well as to those in whic the energ is ap lied electrically, I have designed it or the lhtter class in particular, and in the resent case I shall illustrate and describe it as embodied in a polarized electric bell of the type employed in telephone systems. Such a bell is usually mounted upon a subscribers telephone set, afl'ordin means of advertising a call for his station. oils of the same kind are also used for divers purposes in central stations-as, for instance, in connection with what are known as gongboards, whereon'bells of different tones replace the ordinary annunciator-drops. On such a board ongs of different sizes and tones are emplo e sometimes to the number of thirty or orty, includin those of such different types as sleigh-bails, cow-bells, domed gon bells, and flat gongs'. Since their diameters vary as widely as their types and tones, it follows that it has been diilicult or impossible to rovide a standard mounting to take all of them. Again, at subscribers" stations it is frequently necessary or desirable to var the tones of the gong; as in pnrty-line wor or in cases where there are several telephones in one place. In party-line work where selective signalin is practiced, employing currents of difIerent frequencir s,

' gongs of correspondingly different sizes and tones are often em loyed. A due re ard for economy forbids tl ie provision of a iflerent mounting for every gong, and yet it has bee 11 found impossible heretofore to standard mountingthat would ta 0 all the sizes interchangeably.

My present invention obviates all the difficulties stated, with many others, and renders it possible to employ one standard set of parts for the ringer, uniform in their assemling and uniform in size, even to the gongposts, gongs of widely-varying size and shape eing supported by these gongosts interchangeably, provided only that t e strikingoints are approximatel the same distance rom the bases. Even t 's is not necessary, however, if V clapper-rods of proper corresponding lengths are provided.

In describing my invention hereinafter I shall assume that plain gongs of standard type and of diameters from two to three inches each are to be employed. As this is a purely arbitrary course, imit myself thereby, although these are the dimensions most frequently met with in 1pIractice.

y invention is fully illustrated in the accompanying drawings, wherein F1 re 1 is a side view of a polarized electric ell embodying my invention, and Fi nx 2 is a top plan view thereof with gongs of different sizes indicated in dotted lines.

In the drawings, M indicates a pair of electromagnets mounted upon a yoke bar or base m, which carries also the permanent magnet M, by whose influence the cores and armature A are maintained polarized, so that the armature moves in response to alternating orl'uzelversed currents only. This armature 0 es a clapper-rod a and a clapper rovide a i assumption, I do not, of

transverse slot h for the accommodation of a limiting sct-screw h, which is also tapped into the yoke-bar m. The slot h is preferably curved, the center of curvature being in the axis of the screw it; but this is not essential, provided the width of the slot is made a little greater than the diameter of the shank of the screw it. In connection with this form of adjuster I have illustrated in the drawings a method of armature adjustment which I prefer to use. The armature is pivoted at a between upturned cars a on a yoke a. This yoke has its ends perforated, forming rings which encircle flanges secured to the u iper spool-heads F of the electromagnets It. The flanges f are screw-threaded, and suitable 'adjusting and locking nuts f f are fitted thereon, lying, res ectively, above and below the ends of the yo e a.

The method of assembling and adjusting the bell thus described will now be apparent. The electromagnets and the permanent magnet havin been mounted upon the base or yoke m, the armature is first adjusted by moving one end or the other of its yoke up and down until its opposite strokes are equal and of maximum strength. The nuts f and f 2 are then set up, so as to render this part of the adjustment permanent. Assuming then that two-inch gongs are to be used, as shown in full lines at G in the drawings, the curved plates or horns H are secured'to the yoke m, with their ends inclining inward from the pivots, as shown in Fig. Each plate-may now be moved upon its pivot-screw); until its gong bears exactly the proper relation to the clap )er (1. when the set-screws h are tightene to lock the plates against subsequent movement. To render the adjustment more secure, the pivot-screws it may likewise be set u tightly, a double binding effect u on the p ates being thus possible. If each s 0t 71 is of proper length to permit a motioi. )f onefourth inch from center to center of the extreme positions of the screw 71, therein, the gong-post and gong-centers will then have a play of one-half inch, with theplates ll in the positions shown in Fig. 2 -that is to say, any size gong from the two-inch shown in solid lines at G to the two-and-one-half-inch shown in dotted lines at G can be accommodated and can be adjusted with regard to theclapper. If it be desired to use a still larger gong, I reverse the 1plates I I. If the gong-posts G were detacha )ly secured. to the plates, this reversal could be attained by removing the posts and turning the plates. upside down. The gongquosts are usually riveted to the plates, hon ever, and the simplest way is to exchange the plates, that shown in full lines upon the right in Fig. 2 being applied as indicated in dotted lines at the left ol' the same figure, and vice versa. The innermost limit of movement of the gong-post center 72: is now in the line through the centers of the two screws h h, and the outermost limit is that shown in dotted lines. As this gives a play of one-half inch and as the innermost mit calls for a two-andonchalfinc,h gong, any gongs may now be used between the two-and-one-half inch size (indicated at G) and the three-inch, (indicated at G The adjustment with regard to the clapper a is the same in any case through the entire range of movement. .The armature adjus uient also remains the same throughout the entire range of adjustment of the gongs, and this adjustment is in every case rendered permanent by simply tightening up the screws h and h, as already stated.

It will be observed that in this bell the numberof parts is reduced to a minimum and the design is such that a very rigid frame is roduced, composed of the operative parts, al of which are adjustable and all of which are standard and interchangeable throughout. The only parts that need vary in size or style are the ongs themselves.

Having thus escribed my invention, what I claim, and'desire to secure by Letters Patcnt, is-

1. A ringer comprising a supportingframc, a gong-supportin member revers ably seoured thereon an normally adjustable in one direction but when reversed adapted having an eiual range of adjustmentin the opposite. irection which forms with the first movement a continuous path of adjustment from a given point? 2. In a ringer, the combination with, a support, of an arc-shaped member reversal) y pivoted to said support, a gong-post secured to said member, a gong thereon, and means intermediate the ivot and gong-post for adjusting said mem or when in either position from a given point so as to form a continuous are of adjustment.

3. A ringer comprising a gong, a clapper and its actuatin parts, a gong holder or support having a limited range of movement normally in one direction with respect to the clapper, together with interchan eable eonnectlons therefor whereby the irection of movement may be reversed and the range of adjustment continued in the opposite direction and thereby doubled.

4. An electric bell provided with a base or frame, a clapper, a pair ofadjustablc gong supports pivotally secured to the base on opposite sides of the clapper, and adjusting same median line in the opposite direction or means intern-e liate. the pivot and the gnngaway from the ole per. 1 posts, each of said supports having a limited In testimony w ereof I have affixedmy rangemf travel from a median line through signature in presence of two witnesses.

5 the plvot the adjusting means and the gong SIDNEY A. BEYLAND.

post, toward the 0121 per when in their ini- Witnesses: tial position, and W en reversed or inter- RAY H. MASIsON,

changed to have a range of travel from the WMLW. DEAN.

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