US2104963A - Electric door chime - Google Patents

Description

Jan. 11, 1938. E. e. ANDERSON ELECTRIC DOCR CHIME Filed May 51, 1954 3rwentor t'DW/A/ G. A/vamso/v (Ittorneg 20 efficient in its action, and which will not readily extremi y om an pwa d extension -0! t e 50 Casing l, frame 2, cam shaft 3, cam members post ll supports a pair of upwardly extending 50 Patented Jan. 11, 2,104,963

UNITED STATES PATENT OFFICE 1:31am I Edwin G. Anderson, San Diego, Annotation May 11, loss. Serial No. teases 3 Claims. loi. 116-449) Myinventionrelatestoelectric door chime, and stitute theprincipal parts and portions of my the objects of my invention are: novel electric door chimes. First. to provide an electric door' chime in The casing l. comprises a baseplate la and a which each of a seriesof chime tubes is struclr suitable cover to fit thereover and define a sub- 8 in a predetermined sequentialorder upon pressstantially rectangular area to enclose the neces- I ing a push button; sary mechanism, said casing of course is orna- Becond, to provide an electric door chime mented if the door chime is positioned in view. which upon being set into operation continues The base plate la supports a frame '2 which exto the completion of its cycle even though the tends transversely: The frame 2 comprises a 10 circuit to the push button is broken; cross portion 2a having bracket portions 2b at 10 Third, to provide an electric door chime its extremites secured to the margins of the which the sequential arrangement of the tone base plate. Said frame journals between the obtained maybe varied; bracket port ions 2b a cam shaft 3 upon which Fourth, to provide an electric door, chime is mounted a. series of cam members 4 which 1| which incorporates a novel clapper means which will be described in more detailhereinafter. 15 is so arranged that each chime tube is struck At approximately. its central portion the cam only once when the clapper is released, and shaft 3 is provided with a'worm gear I which Fifth, to provide on the whole a novelly conis en ag by W rm T m unted on acounter structed electric door chime which is durable, shaft 6. Said counter shaft is supported by one deteriorate or get out of order. a frame 2. 'This extension also supports a suit- With these, and other oblects in view as will a pulley means 8 t dby a-moto 9- appear hereinafter, my invention consists of The cam shaft 3 also supports a switch cam l0 certain novel features of construction, combi-- which is in the form of a circular discwith 5 nation and arrangement of parts and portions a notch. Illa therein, as shown best in Fig. 4. 2

as will be hereinafter described in detail and The cam in operates a switch means ll. Said particularly set forth in the appended claims, switch means comprises asuitably insulated base reference being had tp the accompanying drawportion Ila from which extend a pair of leaf ing and to the characters of reference thereon springs llb. Said leaf springs are provided with which form a part of this application, in which: suitable contact elements llc which are nor- 30 Figure 1 is a front elevational view of the elecmally separated. One of the leaf springs is protrio door chime with the cover member shown vided with an insulated cam rider portion lid in section and the chime tubes shown fragmenwhich engages the cam ill in such a manner that tarily and other portions of the mechanism when the rider portionflts in the notch Ilia the broken away to facilitate the illustration; Fig. 2 contact elements llc are separated, but when 35 is an enlarged longitudinal sectional view therethe rider engages the normal periphery of the of through 2! of Fig; 1 with parts and porcam said contact elements are engaged. tions shown in elevation; Fig. 3 is a transverse The cam members 4 are arranged in equally sectional view thereof through 3-! of Fig. 1 spaced relation along the cam shaft 3 and oppo- 40 on the same scale therewith, and with parts and site the cam members the cross portion 2a of 40 portions shown in elevation, and Fig. 4 is an the frame is perforated to -receive supporting enlarged fragmentary sectional view through hooks l2. Each hook I! supports a chime tube 4-4 of Fig. 1 with parts and portions shown in l3. Each chime tube is provided with a metal elevation and illustrating particularly the switch plug lie in its upper end in'which is, secured a means for maintaining the operation of the door loop member lib which is adapted to be sus- 45 chimes. 4 i pended from the'corresponding hook l2.

Similar characters of reference refer to simi- Each chime tube is spaced forwardly of the lar parts and portions throughout the several base plate is and at the lower end of the base views of the drawing. a plate under each chime tube is a post It. Each 4, worm gear 5, counter shaft l, worm 1, pulley leaf springs l8 and l8 which are arranged in submeans 0, motor 8, switch cam ll, switch means stantially parallel relation with each other and II, supporting hooks II. chime tubes l3, posts are separated by spacers Il, one at the correll, leaf springs II and ll, spacers l1, cushion sponding post I4 and one at the extremitiesoft 65 ll, striker II, and adiustme'nt bracket II, conthe leaf springs. The leaf springs are also spaced apart intermediate their ends bya cushion it formed of rubber or the like. The leaf spring it which is adjacent the chime tube is. provided with a striker ll. Said striker is secured with the extended spacer I! to the two springs. Said striker comprises a relatively heavy base portion Illa in which is provideda socket adapted to receive a striker pad Nb formed of leather or, the like. The leaf spring II projects slightly beyond the leaf spring i8 and is provided with an extremity Ha which is turned in a direction away rrom the chime tube and is positioned so as to be engaged by the corresponding cam member l. Each cam member 4 is provided with one or more cam fingers 4a, as shown best in Fig. 2. Thecam members rotate in a direction to force the leaf springs away from the chime tubes and thereupon suddenly release the springs so that the striker IS-engag'es the chime tube. Each leaf spring tends to snub theaction of the other so that upon striking the chime tube the next reciprocation oi. the two springs is very much dampened and the magnitude of their movement is in'sufilcient to engage the chime tube again. In order to obtain the proper reciprocation or vibration ofthe springs, an adjustment bracket 20 is provided including a base portion Ila with an extended spring engaging end Ilb, which is of!- set relatively to the inner side of the base portion 20a, which bracket is supported from the extremityot each post it in such a manner that the offset end 20b bears against the leaf spring l6 and the tension of the end no against the spring is dependent upon the tightness oi the nut Ha on the post It. For instance, if the nut Ila is set tightly, the end "b .will cause great tension against the spring II. However, if this nut No is loosened slightly, it permits the member 2| to tilt slightly and reduces the tension on the spring. Thus it will be seen that by varying the pressure of the nut against the bracket II, the pressure of the bracket 20 at the end 2lb will be 'varied against the spring II and the proper adjustment obtained. Once said adjustment isobtained no further change in the ar-- rangement need be made as the adjustment is permanent. when a push button or other suitable switch is depressed momentarily, a circuit through the motor 8 is completed which causes the cam shaft 3 to turn closing the switch II. The switch H is of course arranged in parallel with the push button used to initiate the operation and consequently the circuit through the motor is maintained until the cam shaft has made one" complete revolution. To make this revolution the several cam members [release the corresponding strikers I! in the desired sequential order.

Though I have shown and described a particular construction, combination and arrangement of parts and portions. I 'do not wish to be limited to this particular construction, combination and arrangement, but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire. to secure by Letters Patent is:

1. In a door chime, a vertically disposed chime element, a clapper means forv said chime element including a dual leaf spring means arranged longitudinally with said chime element and having a fixed end opposite an intermediate portion of said chime element and a free end adjacent the extremity thereof, a rigid spacer between the free portion of the dual spring means, a yieldable spacer intermediate the ends of said dual spring means, a rigid spacer between the fixed end thereof, and a striker at the free end of the spring means engageable with the upper end of I the chime element.

2. In a door chime, a vertically disposed chime element, a clapper means for said chimev element including a dual leaf spring means arranged longitudinally with said chime element and having a fixed end opposite an intermediate portion of said chime element and a free end 'adiacent the extremity thereof, a rigid spacer between the free portion of the dual spring means, a yieldable spacer intermediate the ends of said dual spring means, a rigid spacer between the fixed end thereof, a' striker at the free end of the spring means engageable with the upper end of the chime element, and an adjustable retarding member engaging one of the spring means of said dual spring means a slight distance from its fixed end.

3. In a doorchime a vertically disposed chime element, a clapper means for said chime element including a dual leaf spring means arranged'longitudinally with said chime element and having a fixed end opposite an intermediate portion of said chime element anda free end adjacent the extremity thereof, a rigid spacer between the tree portion '0! the dual spring means, a yieldable spacer intermediate the ends of said dual spring means, a rigid spacer between the fixed end there'- of, a striker at the free end of the spring means engageable with the upper end of the chime element, one of said dual spring means being provided with an angular extended portion, and a cam engageable with said angular extended portion arranged to release said angular extended portion when said cam reaches the extremity of said angular extended portion. EDWIN G. ANDERSON. k

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