US1271514A - Sounder. - Google Patents

Description

T. J. MURPHY.

SOUNDER.

APPLICATION FILED ocr. 2. Ism,A

Patented J uly 2, 1918 INV me Nonms Pzrsns cul. mmm-uma.. wnnmcmn, n. c

.AES PN FF.

THOMAS J. MURPHY, OF ROCHESTER, NEW YORK, ASSIGNOR OF ONE-HALF TO JAMES P. B. DUFFY, OF ROCHESTER, NEW YORK.

SOUNDER.

To all whom t may concern.'

Be it known that I, THOMAS J. MURPHY, a subject of the King of Great Britain, and a resident of Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Sounder; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and tothe characters of reference marked thereon, which form a part of this specification.

My invention relates to telegraph sounders and it particularly has for its object to produce a sounding means which may be telegraphically operated by an alternating current. 1t particularly has for its object to provide a sounding means which will produce a clear and distinct sound and will `not chatter, due to the rebound of the soundino element.

r(ilonstructions containing the invention vmay partake of different forms. I have shown in the drawing a construction containing theinvention', it being understood that elements of the construction may be substituted by equivalent members, and yet such altered constructions will contain the invention.

The construction selected for purposes of illustration is shown in the drawings, where- 1n- Figure 1 illustrates a sectional view of the sounder. Fig.'2 illustrates an end view and Fig. 3 illustrates a top view of the sounder, and also, diagrammatically, a system with which the sounder may be connected.

1, Fig. l, is a base for supporting the sounder, having binding posts 2, 3 and 4 for connecting the sounder with an external circuit. A container or housing 5 may be located on the base 1 which will operate as a sounding box or element and which may also contain the alternatingcurrent electromagnets 6 having laminated cores 7.

On the top of the housing or container 5 is located a sounding element or lever 8 formed of non-magnetic material and preferably of aluminum. The sounding element or lever Specification of Letters Patent.

Application fled October 2, 1916.,

Patented July 2, 1918.

Serial No. 123,420.

is supported centrally between two adjustable bearing screws 9 located in the yoke 10 10 and the top of the movable sounding element or lever 8 is located the spring 26 whichr operates to hold the sounding element against the points of the screws 9 to prevent any loose play that might exist by reason of wear or inaccurate adjustment of the screws.

A U-member or bracket 11 is located over one end of the sounding element or lever 8 which is secured to the top of the container 5. The yoke 10 is provided with a pair of upwardly extending arms 27. Brackets 14 and a permanent magnet are secured to the arms 27 by means of the screws 28. One of the brackets 14 extends over the U-meinber 11. Steel adjusting screws 12 are threaded into steel brackets 14. One screw 12 extends through the top of the U-member 11.

`formed of steel or magnetic material, they (,-perateto extend the field of the magnet 15 so that the steel screws 12 are permanently magnetized by the permanent magnet 15. The bar 18 being formed of a magnetic material and extending from beneath one screw 12 to the other screw 12, the permeability of the field of the permanent magnet 15 is increased thereby.

The ends of the lever or sounding member 8 and the magnetic strip18 are provided with steel screws 16 having flattened heads 17 which strike against the steel screws 12 when the lever or soun ding member 8 is tilted one way or the other. The lever or sounding member 8 thus completes the magnetic Circuit of the permanent magnet 15, except for a short distance, at one or the other of, the steel pins 12, when one or the other of the electromagnets 6 have separated one of the ends ofthe sounding member-8 fromfthe stoel pin located in proximity thereto. Vhen one of the magnets G separates the sounding member 8 from one ot' the steel pins 12 it` overcomes the stickingl effect caused by the attraction between the steel pins 1'2 and 16. The opposite end of the sounding member 8 will be raised and the steel pins' 12 and 16 of that end of the sounding member will come in contact with each other and the sounding member will be held against any rebound or chattering that might otle'ilA wise be proc'lfucec'l,l and the souii'd prodrr'c'ed will be a clear, definite stroke, notwithstand ing the fact that the sounding member 8 may bebalancled centrally to permit equal action when either of its ends are drawn down by one or the other of the magnets'. 1

The lJ-memberY 11 being` located over but one end of the sounding element or lever 8, a different tone isproduced when the lever strikes the 'other screw 12, which clearly indicates to the operator the beginning and the completion of the elemental vpart o1 the Morse signal which is transmitted over the line.

The sounder may be used in connection with one of a number of systems. I'have shownn the drawing merely a conventional arrangement for the ,operation of the. sounder. In Fig. 3 of the drawings,20 is' a lsource of alternating current, which is connected to the magnets 6 by means of the wire 21,. The return isthrough either one of the branches 22 which 'are also connecteda of the electromagnets, a permanent magnet supported above the sounding member, the poles of the magnets and the ends of the sounding member having abutting steel screws, a member connected to one of the steel screws for producing a sound diii'erent from thatl w-hei'rthe other' of thelsteelsorews is struck bythe sounding member.

2. In a telegraph sounder the combination o1 a movable sound producing member, elec- "omagnets operating on the ends ofthe sound producing member, a source of alternating current -connected to the electromagnet for operating the sounding member, a magnetic means for holding the sondmg member to prevent 'chattering at the end of each movement of the soundermember.

In a sounder the combination oifa-pair4 of eleotromagnets, a pivotallfy supported sounding member operated by the electromagnets, a sou-ree of alternating current "connected to the electromagnets for moving" the sounding member, a permanent magnet, vthe poles of the permanent magnet terminating near the ends ofthe sounding member to magnetically yieldingl-y retain the sounding membera'gainst movementproduced by the electromagnets.

4. In a sounder the combination of a pair ot electromag-nets,l a balanced sounding member pivotally supported above the poiles ot the electromagnets, a source of alternating current connected to the electromagnets for moving' thel ksounding member, a .permato the magnets 6. A relay or key, directlylggl'nent magnet, the vpoles of theV permanent sounder. Y I have shown in the drawing a`- key having a laterally. operated-lever 23 which is connected to the source of current' 20 and which may connect the source 20 through either of the branches 22 Yby shifting either -to the right or to the left, in which case one or the other of the magnets 6 would be operated, which will pull down one or the other sides or arms of the sound'- ing member 8 to cause the opposite member to riseand strike against the steel pin 12, which will hold the balanced sounding memberS to prevent any' recoil or rebound.` Suitable ,induotance may be inserted in the line 21 if desired.` An adjustable induction coil 24 shown in the system.

The current ows from the source of current 2O to, the key 23, thence to 'one or the otherV ot the contacts of the key, one or the other of the lines 22 and onev or the other of the ele'ctromagnets 7. The current flows from one or the other of the magnets 7 according ,to which way the lever' ot the key is placed through the line 21 the adjustable induction coil 24 to the lsource 20.

I claim:

1. I-na sounder, the combination of a pair of efle'ctromagnets, a balanced sounding member .pivotally Supporteclabovethe poles connected, ymay be used for operating the' lfmagnet and ends oi the sounding member having abutting steel screws for yieldingly holding the sounding member:

1 5. In a sounder the combination of a pivotally supported sounding member, electromagnets for "operating on theY sounding member, a permanent `magnet having abutting members for limitingthe ,inovementof the sounding member for yieldingly holding the sounding member, a resonant .body conneoted ,tonne of the abutting 'members' for producing a sound different from that when the otherabutting member is YStruck bythe Sounding mem-ber.A

6. In a sounder the combina-tion of elec tromagnets, a pivotally supported sounding member formed of diam agnetic material and having armatures operated upon by the electromagnets, a permanent magnet, the sounding vmember having a strip of magnetic material located below the poles of the permanentmember for increasing the'magnetizing eilect'of the permanent magnet.

7*. In a Vsounder the combination o'f electromagnets, a pivotally sup-ported Sounding member formed of aluminum and having armatures operated upon by the electromagnets, a permanent magnet, the sounding member having a strip extending across the poiles of the permanent magnet for increasl .energizing the eleetromagnets, and means for yieldingly holding the pivoted member against Athe attraction of the alternately enle ergized magnets.

In testimony whereof, I have hereunto signed my name to this speeieation.

THOMAS J. MURPHY.

ing the magnetizing effect of the permanent magnet.

8. In an alternating current telegraph sounder, a pivoted sounding member, electromagnets having laminated cores operating on eaeh end of the Sounding member, a source of alterna-cmg current for alternately be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C.

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