US1571435A - Automatic telephone ringer - Google Patents

Description

Feb. 2 1926,

E.. T. RICHEY AUTOMATIC TELEPHONE RINGER .F iled May 27. 1924 Patented Feb. 2, 1926.

UNITED STATES ELDRED THURS'ION RICHEY, 01? LE BLANC, LOUISIANA.

AUTOMATIC TELEPHONE RINGER.

Application fi1ed May 27, 1924.

To all whom it may concern.

Be it known that I, ELDRED THURSTON Brown, a citizen of the United States, residing at Le Blane, in the parish of Allen and State of Louisiana, have invented certain new and useful Improvements in an Automatic Telephone Ringer, of which the following is a specification.

This invention relates to automatic telephone ringers especially adapted to be used in conjunction with telephone switch boards and it consists in novel features hereinafter described and claimed.

An object of the invention is to provide an instrument or apparatus in which a circuit may be closed and a switch may be positioned whereby a desired number of rings may be sounded in the call station elim1nating the necessity of turning a crank a certain definite number of times-in order to produce the ring call.

In the accompanying drawing:

Figure 1 is a diagrammatic view of the automatic telephone ringer.

Figure 2 is a transverse sectional vlew thereof out on the line 22 of Figure 1..

Figure 3 is a side elevation of a disk used in the apparatus.

Figure 4 is an edge elevation of the disk.

Figure 5 is a side elevation of another disk used in the apparatus.

The automatic telephone ringer comprises a base 1 having a series of electromagnets 2 mounted thereon. Spring contacts 3 are mounted upon the base 1 opposite the cores of the magnets 2. A contact member 4 s mounted upon the base 1. A motor 5 s mounted upon the base 1 and a disk 6 1S mounted upon the shaft of the motor 5. A contact 7 is mounted upon the base 1 and bears against the disk 6. A binding post 8 is mounted upon the contact '7. A set screw 10 is carried by an extension 9 of the base and bears upon the shaft of the motor 5 and serves to regulate the rate of speed at which the said shaft may rotate. A series of metal terminals 11 is mounted upon the magnets 2. A crank 12 is provided upon the shaft of the motor 5. A rod 13 is connected with the crank 12 and carries a metal strip 14 which is mounted in guides 15. The guides 15 are mounted upon a magnet 16 which in turn is mounted upon the base 1 and the plate 14 is normally held spaced from the core of the magnet 16. The shaft of the motor 5 is indicated at 17. A .Sfilifis of disks 18 is the ends of the plate 32 (see "wire 35 connects the push button 25 with Serial No. 716,133.

mounted upon the shaft 17. The disks 18 are insulated from each other as at 19. Binding screws 20 are mounted upon the base 1 opposite the disks 18. Each disk 18 is provided upon its periphery with a strip 21 of insulating material. Contacts 22 are connected with the binding post 20 hereinbefore mentioned. The numbers shown at 23 indicate the number of call rings which are to be produced at the telephone, for instance the number two and one-half signifies that the call rings are to be two long rings and one short ring. Contact points 24 are located adjacent the numbers 23. A push button 25 is mounted adjacent the row of contact points 24. A switch lever and knob 26 is mounted opposite the push button 25, in which the switch lever may be set on any desired contact ing the knob. Wires 27 (see Figure 3) are carried by each disk 18 connected to a copper lined groove provided upon the disk. The groove is indicated at 28. Brass plates 29 are mounted upon the disk 18 and con nccted with the wires 27. The said plates 29 are also adapted to have contact with the flexible contact members 3 as the disks 18 rotate. The relatively long plates upon the disks 18 produce a long call ring and a short plate produces a short call ring. The spaces 30 between the ends of the adjacent plates 29 upon the disks 18, produce the interruption in the ring which is produced at the telephone. The disk 6 carries a wire 31 which contacts with a relatively long plate 32 mounted upon the periphery of the said disk. The contact 4 engages the plate 32. The contact 7 engages in a copper lined groove 33 provided in the disk 6. The wire 31 carried by the disk 6 makes a connectionv with both the plate 32 and the copper lined groove 33. At 34 a gap is shown between Figure 5). A

the magnet 16. The wire 36 connects the push button 25 with a battery 37 and with a telephone instrument 38. Wiring 39 connects-the magnet 16 with the battery 37, with the motor 5 and with theswitoh lever 26. Wiring 40 connects the contact point 24 with the magnet 2.

lVhen the push button 25 is closed, a circuit is completed from the battery 37 to the magnet 16 whereby the bar 14 is attracted and the rod 13 is moved thus giving the crank 12 and the shaft 17 a slight turn,

point 24 by turnwhich is enough to turn'the'disk 6 so that the plate 32 is brought in contact with the contact member 4. Thus the gap 34 is moved from under the-contact 4 and an electric circuit'is completed to the motor 5 from the battery 37 whichturns the shaft- 17 at a slow rate of speed. At the time that the push button is closed the switch lever magnets 2. The magnet switchis thus en ergizedand' attracts the flexible contact 3 and draws the same into engagementwith the adjacent terminal 11 which completes a circuit'to the telephone instrument 38. The disk 6 furnishes the current for the motor with the plate 32 contacting with the contact member 4 and the contact 7. The

magnet 16turns the disk 'until the plate on it comes in contact with the member l. The contact member 7 is at all times in engagement with the disk'6p \Vhen the motor starts the disk 18 which is opposite' theen- 29 come in contactwith the contact members 3, thus completing the (ill'Ctllttl'llOtlgll the terminalll and terminal 22 and thusthe rings are sounded at thetelephone. After the first plate upon the disk has passed, the

gap -30 comes opposite the magnetand the circuitis broken, thus the ring atthe telephone is interrupted. lVhen the disk 6 completes a rotation,the-contact member 4 seats in the gap 34 and thus the supply of current from the battery to the motor is interrupted and the motor comes to a state of rest.

Having: thus described the invention, what I claim is An automatic-telephone ringer comprising a motor, adisk mounted upon the shaft of the motor, a plate *mounted upon the periphery ofthe disk,-contactmembers engaging. said plate, a battery connected with the contact members and: the motor, a telephone connected with the battery, a selective switch device connected" withthe battery, disksmounted upon the shaft of the motor and havingspaced plates, contacts adapted to engage the lastmentioned disks, a, magnet for moving one ofthelast mentioned contacts and electrically connected with the vpoint switch mechanism, a terminal located in the path of movement of said contact and electrically connected with the telephone in ergized magnet, it revolves and the plates nected withjthe shaft of theinotor and elecstrument, and a magnetoperativelycontrically connected with apush button and the battery.

In testimony whereof I affix my signature.

E. THURSTON' RICHEY.

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