US1244551A - Automatic stop mechanism for phonograph-machines. - Google Patents

Description

M. B. SELTER.

AUTOMATIC STOP MECHANISM FOR PHONOGRAPH MACHINES.

P l ED OCT. 9.1916.

1,2%4,551 Patented Oct. 30, 1917.

2 SHEETS-SHEET l.

H //1 n: 56 i' 1 M. B. SELTER.

AUTOMATIC STOP MECHANISM FOR PHONOGRAPH MACHINES.

APPLICATION FILED OCT- 9. 1916.

' Patented Oct. 30,1917.

2 SHEETS-SHEET 2.'

UNITED STATES PATENT OFFICE.

MILO B. SELTEB, OF COLOMA, MICHIGAN, ASSIGNOR TO PLAYEBPHONE' TALKING MACHINE COMPANY, A CORPORATION OF ILLINOIS.

AUTOMATIC STOP MECHANISM FOR PHONOGRAPH-MACHINES.

Specification of Letters Iatent.

Patented Oct. 30, 1917.

To all whom it may concern:

Be it known that I, MILO B. SELTER, a citizen of the United States, and a resident of the city of Coloma, in the county of Berrien and State of Michigan, have in vented certain new and useful Improvements in Automatic Stop Mechanism for.

Phonograph-Machines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings,

and to the numerals of reference markedthereon, which form a part of this specification.

This invention relates to an improved form of automatic stop mechanisms for association with a phonograph or talking machine whereon disk records are played, said mechanisms adapted to operate at the com-,

the disk record to be played so that at the completion of the playing of the record, the

carrying or driving means for the record is immediately brought to rest.

It is also an object of this invention to construct an automatically operating mechanism for phonograph or talking machines adapted when the recorder arm is swung to playing position to set the driving means of the machine in operation and acting automatically when the recorder arm is swung to its opposite extreme of movement at the completion of playing of the record, to bring said driving mechanism to rest.

It is also an important object of this invention to construct an automatic stop mechanism or talking machines operated by movement of the recorder arm of the machine, movement thereof to initial playing position serving to release the driving mechanisms and close the electric circuit thereto and movement of said arm toward the other extreme osition after travel across the record serving to release a brake mechanism and further cutting off the electric circuit to the driving means so that the record played is brought immediately to rest after completion of playing thereof.

It is furthermore an important object of this invention to construct an automatically operating stop mechanism for talking ma chines comprising means actuatable by movement of the recorder arm. to initial playing position to release the driving means and close the electric circuit thereto to set said driving means in operation and operating by movement across the record into an opposite extreme position determined by an adjusting device set according to the size of the record to be played to release the brake means and also releasing the switch mechanism from movement into open position so that the record is brought to rest at the completion of the playing thereof.

It is finally an object of this invention to construct a simple type of automatic stop mechanism for talking machines operating to set the driving means of the machine in operation when the recorder arm is moved toward initial playing position, and to disconnect the drive of the machine after the completion of the playing of the record thereon.

The invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a top plan view of a talking machine equipped with mechanisms embodying the principles of my invention.

Fig. 2 is a fragmentary side view of the lower end of the recorder arm, showing a part of the mechanisms of the device.

Fig. 3 is a fragmentary front face view of the lowerend of the recorder arm, showing a part of the mechanisms of the device.

Fig. t is a fragmentary bottom plan view of the stop lever and its pivotal contact arm.

Fig. 5 is an edge view of the manually actuatable lever of the contact arm shown in Fig. 4.

Fig. 6 is a fragmentary top plan view of a portion of the release mechanism with parts omitted.

Fig. 7 is a detail top plan view with parts in section and parts omitted of the mechanisms embodying the principles of my invention, and illustrating the operation in dotted lines.

Fig. 8 is a central vertical section with parts omitted and parts in elevation, taken through the mechanism shown in Fig. 7

Fig. 9 is a detail section taken on line 99 of Fig. 7.

Fig. 10 is a detail view at one end of the lever shown in Fig. i.

Fig. 11 is an edge view of the switch contact arm and brake thereon.

Fig. 12 is a detail section taken on line 12-42 of Fig. 4.

Fig. 13 is a sectional detail illustrating the switch mechanism of the device.

As shown on the drawings:

The reference numeral 1, indicates the casing of a talking machine which is provided with a horizontal top plate or partition 2, above which is shown a horizontally rotatable record carrying disk 3, upon which a record 4, to be played, is placed. Secured over an aperture in the top plate 2, is an annular member or ring 5, which is spherically concave on its interior afi ording a socket for the ball end 6, of the record arm Z, thus permitting universal movement thereof within certain limits. Mounted beneath the record carrying table or disk 3, as shown in Fig. 7, is a stationary base plate 8, and secured through the forward end thereof is a pintle 9, on which the circular portion 10, of a brake and switch lever 11, is pivoted, with a tail extension 12, of said lever extending outwardly on one side of the stationary plate 8.

Pivoted upon a stud 13, mounted in the 1 rear end of the base plate 8, is a forwardly extending lock lever 14, provided with a tooth 15, at the forward end thereof adapted to engage in a recess 16, provided in the rounded portion 10, of said brake and switch lever, and connected upon said lock lever 14, is a tension spring 17, which is also connected to the tail lever extension 12, of the brake arm. A lug 18, is struck upwardly fromthe base plate 8, and serves to limit the outward movement of the lock lever 14.

The outer end of said brake arm or lever 11, is curved and bent upwardly as denoted by the reference numeral 19, and so disposed as to be readily contacted by a vertically depending pin 20, secured adjustably in a bracket extension 21, mounted on the front rounded portion of the recorder arm 7. A portion of said brake arm or lever 11, near the middle thereof, is struck upwardly and secured thereto is a friction brake insert 22, of any suitable material, disposed to contact against the inner surface of the depending flange portion of the disk carrying table 3, as shown in Fig. 7. Also secured to the middle portion of the brake arm or lever 11, on the under surface thereof, is a resilient switch closure element 23, shown in detail in Fig. 13, adapted in one position of said brake arm to establish a closed circuit through terminal contact members 24 and 25, respectively, secured in the top plate 2, of the machine casing. Journaled upon the stud 9, above a collar or flange 26, formed thereon, is a lever 27, having an elongated hub extension 28, which extends upwardly around the pintle 9, as clearly shown in Fig. 8. Mounted above the lever 27 upon the hub 28, thereof, is a washer 29, and engaged over the hub 28, and above said washer, is alever30, provided with a slot 31, which is engaged by a pin 32, formed on an extension 33, of the lever 14. Also mounted upon the hub 28, is a spring element at, afiording a plurality of resilient fingers bearing upon said lever 30, and secured upon the upper threaded end of the hub 28, are two lock nuts 35 and 36, respectively, which are tightened down upon said resilient member and thus hold the lever 30, the washer 29, and the lever 27 in frictional relation with one another.

Pivoted beneath the outer end of the lever 27, is a long curved handle or lever 37, shown in Fig. 7, having a short arm extension 38, integral therewith, shown in detail in Figs. at and 12, on an extension of which is adjustably mounted and movable against friction, an eccentric stop 39, to limit movement of the arm 38, in one direction and a down-turned lug 10, is provided on the extreme end of the lever 27, to l1m1t the movement of said arm in an opposite direction.

The operation is as follows: Arter a record has been placed upon a machine, the recorder arm 7 is placed into the position shown in Fig. 1, that is, the position which the arm will assume at the completion of the playing of the record.

,Then the lever 37, is swung toward the pin 20, on the recorder arm until the short pivoted arm 38, of said lever 37, strikes against the pin 20, and this position of the lever 27, which has rotated about its pivot 9, with movement of the lever 37, is the stop position for the record to be played.

The recorder arm is then swung counterclockwise into initial playing position, the pin 20. thereby striking the curved contact lever 1119, and swinging'the same about the pivot 9, in a clockwise direction against the stress. of the tension spring 17, sutficiently such that the recess 16, in said lever, shown in Fig. 6, rotates to a position to be engaged by the tooth 15, of the lock lever 14, which thus operates to hold said lever 1119, in the dotted line position shown in Fig. 2. Movement of the lever 1119, into this position, serves to close the circuit between the switch contact terminals 24 and 25, by means of the switch element 23, so that the electric drive for the carrying'disk 3, is set into operation. As the recorder arm travels across the record 4, during playing thereof, the pin extension 20, on said recorder arm approaches the lever 27, finally striking the same, whereby said lever is retated and due to frictional engagement with the lever 30, rotates said lever 30, which in turn, acts, due to the pin and slot engagement with the lever 14, to shift said lock lever 14, outwardly thereby releasing the tooth 15, from engagement with the recess. This allows the lever 11, to be retracted by its spring 17, thereby breaking the electric circuit and applying the small friction brake shoe 22, against the inner periphery of the depending flange of the carrying table 3.

It is to be noted that in adjusting the stop lever 27, into position by movement of the long curved handle 37, contact with the depending pin 20, of the recorder arm, is had b means of the small short arm extension 88, of the lever 37, which is limited in its pivotal movement on said lever 27, by the eccentric stop 39, but upon return movement of the pin 20, with the recorder arm during the playing of the record, said pin 20, strikes against the edge of the lever 27, and not against the short arm 38. It is evidenttherefore that a further travel of the recorder arm and its pin 20, is necessary at the completion of the playing of the record to strike the arm 27, to release the stop mechanism, than that required to obtain the position in which the recorder arm was placed when the lever 27, was moved by the lever 37 into stop position for that particular record.

This additional amount of movement or overtravel of the recorder arm 'hich is required at the completion of the playing of the record insures a complete movement thereof over the record so that the stop mechanism will not accidentally be released prior to a complete playing ofthe record. The relative movement between the short arm 32, and the lever 27, which provides for this overplay is'determined by the adjustment of the friction eccentric stop 39, which contacts with the rear edge of lever, 27, in the pivotal movement of the arm 37.

I am aware that various details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

1. A stop mechanism for talking machines comprising a stationary plate, a lever pivo'ted thereon having a recess formed therein, a latch lever, a tooth thereon adapted for engagement with said recess, a spring connected both to said first mentioned lever and to said latch lever operating to move said latch lever with the tooth thereon into engagement with said recess, a trip lever adapted for contact by the recorder arm of the talking machine, a slotted lever held in frica spring connected between said latch lever,

and brake arm to hold the same in looking engagement, a stop lever adapted forcontact by the recorder arm of the talking machine, means operated thereby to actuate said latch lever into release position to release said brake arm and permit movement thereof to apply a brake upon the talking machine under the stress of the spring connected thereto, and a mechanism pivoted to said means to permit a slight overtravel of the recorder arm before actuating the latch lever.

3. In a device of the class described, a brake arm, a latch lever adapted for engagement therewith, a spring connected to said latch lever and to said brake arm, a stop lever, a lever pivoted to the stop lever adapted to permit a slight overtravel of the recorder arm in one direction, a lever frictionally connected thereto and connected to said latch lever to release the same whereby said brake arm is released from movement by the stress of its spring and a friction brake means mounted in said brake arm.

4. A stop'mechanism for talking machines utilizing the movement of the recorder thereof, comprising a brake arm adapted to be shifted into release position by movement of the recorder arm to initial playing position, a latch lever to hold said brake arm in released position, a stop lever adapted for movement by said recorder arm upon its movement into position at the completion of the playing of the record, means 0perated by said stop lever to release said latch lever to release said brake arm and permit application thereof to the driving means of the machine to bring the same to rest, a lever pivoted on the latch lever, and means thereon adapted to permit a slight additional movement of the stop lever before releasing the latch lever.

5. A stop mechanism for phonographs comprising a brake lever, a latch lever, a stop lever, a spring connecting the latch and brake levers, a lever pivoted to the stop lever, an eccentric secured thereto, and co-acting stops secured to the stop lever and lever pivoted thereon.

6. A stop mechanism for electrically driven talking machines comprising a stationary plate, a lever pivoted thereon hav; ing a recess formed therein, a switch element in said lever, a latch lever, a tooth thereon adapted for engagement with said recess, a spring connected both to said first mentioned lever and to said latch lever operating to move said latch lever with the tooth thereon into engagement withi said recess, means adapted for contact by the recorder arm of the talking machine to release said latch lever, and permit movement of said first mentioned lever under the stress of said spring out of engagement with said latch lever, and switch terminals normally closed by said switch element adapted to be opened by movement of said switch element with said first mentioned lever.

7. A stop mechanism for electrically driven talking machines comprising a stationary plate, a brake arm pivoted thereon having a recess therein, a switch closure on said arm, a latch lever pivoted on said stationary plate, a tooth formed thereon for engagement with said recess to hold said brake arm retracted, a spring connected between said latch lever and brake arm to hold the same in locking engagement, a stop lever adapted for contact by the recorder arm of the talking machine, means operated thereby to actuate said latch lever into release position to release said brake arm to apply a brake upon a talking machine and break the electric circuit to the machine.

8. The combination with an electrically naaaeai driven phonograph machine, a brake arm, a latch lever adapted for engagement therewith, a spring connected to said latch lever and to said brake arm, a stop lever, a lever frictionally connected thereto and connected .to said latch lever to release the same whereby said brake arm is released from movement by the stress of its spring, a friction brake means mounted in said brake arm, and an electric switch connected on said arm and operated to open circuit position as the arm is released.

9. A stop mechanism for electrically driven talking machines utilizing the move ment of the recorder thereof, comprising a unitary brake and switch arm adapted to be shifted into release position by movement of the recorder arm to initial playing position, a latch lever to hold said brake arm in released position, a stop lever adapted for movement by said recorder arm upon its movement into position at the completion of the playing of the record, and means operated by said stop lever to release said latch lever to release said brake arm to break the electric circuit and brake the driving means of the machine to bring the same to rest.

in testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

MILO B. SELTER. Witnesses:

CHARLES W. HILLS, Jr, EARL M. HARDINE.

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