US1284957A - Signal-bell. - Google Patents

Description

4a. w. ADAMS." swarm BELL.

APPLICATION FILED OCT. 20.19I6.

1,284,95' I Patented N0v.19,1918.

,7 Fg 5 .7gv Y y 14.11.4131 v y .1 l A INVENTOR WITNESSES ATTORNEY BERYL W. ADAMS, 0F TROY, MONTANA.

SIGNAL-BELL.

Application filed October 20, 1916.

To all whom t may concern:

Be it known that I, BERYL W. ADAMS, a

citizen of the United States, residing at` Troy, in the county of Lincoln and State of ontana, have invented certain new and useful Improvements in Signal-Bells, of which the following is a specification.

This invention relates to an improvement in signal bells and more particularly to bells such as are adaptable for use in conjunction with mine hoists and the like to give signals to the hoist engineer, and inother similar connections, the purpose being to provide a bell by which single stroke signals may be given in clear plain tones and at high speed without confusion.

An object of my invention is to Iprovide a bell together with actuating structure therefor which is to be connected in on an alternating current circuit and is so arranged that single stroke signals will be sounded irrespective of whether the energizing connection of the circuit is made of short or long duration, and to so construct the parts that even when the circuit is` connected in for ,some time no damage will result.

A further object lies in providing means in connection with the bell clapper by which the clapper will be given a sharp stroke and will then be returned to a position out of contact with the bell for successive alarm or signal strokes without depending upon electromagnetic or other electrical means for the return.

With the above and other object-s in view,

' my invention consists in certain novel features of construction and combinations of parts which will be hereinafter set forth in connection with the drawings and then more particularly pointed out in the claims.

In the drawings: Figure 1 is a view in front elevation of the device of my invention.

Fig. 2 is a view in side elevation. Fig. 3 is a sectional View taken on the line 3 3 of Fig. 1.

` Fig. 4 is a fragmentary sectional view to illustrate portions of the detail construction. Fig. 5 is a vertical sectional view through the electrically operated bell vstriking means. Fig. 6 is a detail sectional View to better show the arrangement of the clapper actuatv ing means.

The supporting base structure 1 may be Specification of Letters Patent.

Serial No. 126,772.

constructed of wood, slate, or any other suitable material, and the gong 2 of the bell is mounted at the lower end thereof. A clapper mounting bracket 3 is secured on the base 1 above the gong 2, and the clapper 4 is mounted on this bracket 3 by means of the stem 5. The stem 5 of the clapper is connected with the bracket 3 to be capable of swinging movement so that the clapper 4 may be brought into and out of striking engagement with the gong 2, and a coil spring 6 is connected between an arm 7 on the stem 5 and an arm 8 formed in conjunction with the bracket 3, this coil .spring acting to normally hold the stem 5 swung upwardly so that the clapper 4: is out of contact with the gong 2.

A bracket is mounted on the base 1, above the clapper stem 5, and as shown this bracket comprises the base 9 continued in an arm which at the head thereof has an opening 10. At a point below the opening 10, the stem 5 has a. striking or anvil block 11 secured to be brought against the bracket 12 in the upward swinging movement of the stem, the parts being so arranged that as a blow is struck, against the block 11,

the spring 6 will be flexed sufficiently that Patented Nov. 19, 1918..

the stem 5 will swing sharply down and in consequence the, clapper 4c will be brought with a sharp stroke against the gong 2, the spring 6 acting to immediately return the clapper from the striking position and to catch the same upon the rebound and holdit.

Electrically actuated means is employed to strike the driving blow against the block 11, and this means constitutes a sleeve 13 which has the coil windings 14 thereon. Suitable connections are made from the terminal wires of the coil 14 to the circuit wires 15 and 16, which may be connected to a plug socket which in turn is connected with the main line circuit wires 17 by the insertion of the plug 18 into the socket. A core 19, which is constructed as better shown in Fig. 5 is arranged within the sleeve 13 to be capable of limited endwise movement, a bearing ring 20 being connected with the lower end of the sleeve 13 to hold the core 19 in its proper path of movement and a ring 21 being mounted on the upper end of the sleeve 13 for the same purpose. The core 19, which is of wood or other suitable material, at its upper end is preferably made hollow and has the short wire members bunched as at 22 to form a laminated core structure which will be more readily affected by current passing through the wire of the coil 14. The core 19 is reduced and made of less diameter than the interior bore of the sleeve 13, at its lower end, and a coil spring 23 is mounted between the shoulder 24 of the core and bearing ring 20 so that the core 19 will be normally lifted by this spring 23.

A supporting bracket str ucture 25 is mounted above the sleeve 13l and in line therewith, and a ball or block 26 of a cushion material is held in conjunction with this bracket by a clamping member 27 so that as the core 19 is forced upwardly through the action of the spring 23, the upward movement thereof will be stopped by contact with the cushionv member 26. It is essential that the winding of the coils 14 be such that the attractive force will vbe exerted to force the core 19downwardly, and thus when a switch, button, or other circuit connection in the main circuit 17 is thrown in to connect the circuit wires, the coil 14 will be energized and in consequencel the core 19 will be drawn sharply downwardly against the tension of the spring 23 and will strike a driving blow against the striking block 11 to impart movement to the stem 5 and will consequently bring the clapper 4 against the gong, striking aclear and plain tone. As the circuit connecting means is released, the coil 14 will be denergized and in` consequence the core 19 will be again raised through .the action ofv the spring 23 and will be brought up against the cushion member 26, or if the circuit connection is not broken, then the coil 14 will remain in an energized condition and the lower end of the core 19 will be retained against the block 11, however, further striking blows of the .clapper 4 will not occur as a sharp blow against the anvil block is required to cause contact of j the clapper with the gong. Under some circumstances it may be fou-nd desirable to introduce some means of opening the circuit when it is left closed through inadverteiice or through any other cause, and to accomplish this purpose a hot wire circuit opening means may be introduced in the wire 16 or in the wire 15, such a means being shown connected at 28 in the circuit 4wire 16 from the plug socket to one of the terminals of the winding of the coils 14. This automatically operating circuit braking means may be of any standard form and construction, and for this reason the details thereof are not herein shown and described. To permit removal of the parts of the electrically actuating means, itis desirable that the clamp member 27 be made removable so that the cushion member 26 can be displaced, and the coi-e 19 can thuS be drawn vertically the upper side of theV upwardly from its mounting within the sleeve 13, and I therefore vprovide the clamp bolts 29 to retain this clamp member 27 in the position of securing the block or cushion member 26. It is of course understood that the core 19 is reduced at its lower end to be received through the opening 10 of the bracket, and the bracket is placed at a height that a driving blow of the core is necessary to bring the clapper against the bell, the bracket acting to hold the core against excessive downward movement.

While I have herein shown and described only one specific form of the device, it will be understood that changes and modifications might be resorted to in the form and' arrangement of the parts as well as in the circuit connections thereto without departing from the spirit and scope of my inveiition, and hencel do not wish to be limited to the exact disclosure but only to such points as may be set forth in the claims.

I claim:

1. A signal bell comprising a base structure, a gong mounted on the lower end of said base structure, a clapper having a stem pivotally mounted on the base structure, a spring to normally hold said vstem raised to resilicntly retain the clapper out of contact with the gong, a bracket having an opening therein mounted on the base, a striking block carried by the clapper stem to come against the bracket to stop raising movement thereof, an electroemagnetic coil arranged. above the striking block, a core mounted within the coil to be capable of movement, a spring acting to normally raise said core within the coil,v a cushion member mountedon the base structure to hold the core against excessive upward movement, and circuit connectionsarranged through the coil bywhich the same maybe energized to cause downward travel of the core to strike through the opening in the bracket against the striking block and to impart a driving blow through the clapperstem to the cla-pper to cause the same to be moved against the tension of the retaining spring and to contact with the gong.

.2. A signal bell of theV class described comprising a base, a gong carried thereby, a clapper member supported upon said base,

a s rin lenOaOin said cla er member for g zu zg normally holding the saine in an inoperative position, means for drawing said clapper Y member downwardly vinto operative engage-` in a proper position for engaging said clap` per as said clapper returns to its normal position.

3. A signal bell of the class described engagement with said gong, the bracket cari ried above said plunger, a spherical cushion member supported upon said bracket, a retaining plate, said spherical member extending through said retaining plate, and adjustable screws carried by said bracket and engaging said retaining plate for yieldably .lsgupporting said cushion member upon said ase.

4. A signal bell of the class described comprising a base, a vertically movable plunger carried by'said base, electro-magnetic means adapted to be energized for forcing said plunger downwardly, a gong engaging means actuated by said plunger, a bracket supported above said plunger on said base, said bracket provided with an aperture formed therein, a spherical cushion member seated partly within said aperture, a retaining plate provided with an aperture adapted to permit said spherical member to extend partly therethrough, and adjustable retaining screws carried by said bracket and engaging said retaining plate for yieldably supporting said cushion member upon said bracket. J

5. A signal bell of the class described comprising a base, a gong carried thereby, a gong engaging stem supported upon said base, an anvil block carried by said stem, a guiding bracket for limiting the upward swinging movement of said stem, a plunger adapted to extend through said guiding bracket and engage said anvil block for forcing said stem into contact with said gong, a spring supporting arm carried by said base adjacent said stem, said stem provided with an upwardly extending linger, a spring engaging said finger and also engaging said arm for normally holding said stem in an inoperative position, and means for actuating said plunger.

In testimony whereof I affix my signature in presence of two witnesses.

CLIFFORD H. CLAY, EARL BANENT.

Copies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, D. 9.

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