US1285140A - Phonograph-stop. - Google Patents

Description

0. H. HANSEN.

PHONOGRAPH STOP.

APPLICATION FILED JUNE l2- [9i].

Patented Nov. 19, 1918.

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'OSWALD H. HANSEN, 0F PORT WASHINGTON, WISCONSIN, ASSIGNOR TO UNITED i PHONOGRAPHS CORPORATION, OF SHEBOYG-AN, 'WISCONSIN.

PHONOGRAPH-STOP.

To all whom it may concern:

Be it known that OSWALD H. Hansen, a citizen of the United States, residing at Port Washington, in the county of Ozaukee and State of Wisconsin, has invented a certain new and useful Improvement in Phonograph-Stops, of, which the following is a specification.

This invention relates to improvements in the construction of controlling devices for sound reproducing machines, and has particular relation to improvements in automatic stops for phonographs.

An object of. the invention is to provide an automatic phonograph stopping device which is simple in construction and efiicient in operation. Another object is to provide a stopping mechanism which is readily manipulable and which will operate to automatically stop the machine at a predetermined time. Still another object is to provide an automatic stop which may be readily I manufactured and which will cooperate with any of the standard sound reproducing machines. A further object is to provide a phonograph stopping device or brake which may be released at but one place in order to start the machine, but which maybe set at several places in order to stop the machine. Another object is to provide a tone arm actuated automatic stop mechanism in which suspension of elements constituting part of the mechanism, from the tone arm, is avoided.

A clear conception of an embodiment of the invention may be had by referring to the drawing accompanying and forming a part of this specification, in which like reference characters designate the same parts in the several views,

Figure l is a top view of a sound reproducing machine and an automatic stop, showing the brake set.

Fig. 2 is a top view of a sound reproducing machine and an automatic stop, showing the brake released.

Fig. 3 is a transverse fragmentary vertical section through a phonograph cover, and stop supporting bracket, showing details of construction of several elements of the stop mechanism, the section being taken along the line III"III of Fig. 1.

The sound reproducingmachine or phothe trip andindicator arms 19,15.

Specification of L tter t t- Patented 12017.19, 1918.

. Application filedJ'une 12, 1911". Serial No. 174,184. p I

nograph to which the automatic stopping device is herein disclosed as applied comprises, a cover 10, a circular hor zontal rec- 0rd support 11 rotatable about a central ver-.

tical spindle 12 and having a peripheral cylindrical downwardly depending rim 28, a

spring or electric motor of usual construction (not shown) located below thecover 10 0rd support 11 about a vertical axis located at the rear of the machine adjacent the:

and adapted to rotate the support 11, a tone arm 18 swingable to and fro above the T80.

periphery of the support 11, and a repro ducer 29 having a needle coiiperable with the the record support 11.

The automatic stopping mechanism coniprises a bracket 13, a brake 16, a latch 22,

an operating lever 14, a trip arm 19, and anv indicator arm 15. These elements are preferably formed of sheet metal with the use The brake 16 is pivotally mounted upon the bracket 13 adjacent the tone arm axis, and has a pliable shoe 32 which is engageable with the interior of the'rim 28 of the sup-. port 11, as shown in Fig. 1. A helical ten* sion spring 17 connecting the brake 16 and bracket 13, normally urges the brake shoe 32 toward the rim 28. The brake 16 is provided with an elongated opening having a latch moving surface 24, at one portion thereof, and having an abutment 26 at another portion thereof. An upwardly extending projection .27 forms a second abutment on the brake 16. Y

sp ral thread of a disk record 20 placed upon The latch 22 is mounted to swing upon the bracket 13 about a pivot 23 which adjustably frictionally clamps the latch against The upwardly extending projection 25 of the latch 22 projects through the opening in the brake 16 and is adapted to successively engage the brake surface 2e and ment 26,

The operating element or lever 14 has a central pivot 30 upon the bracket 13, and

the abuthas a readily accessible manipulating handle 35 located adjacent the periphery of the record support 11 at the front ofthe machine. The rear end of the lever 14: projects over the brake 16, and is movable into engagement with the latch projection 25 and with the brake projection 27.

The trip. arm 19 is mounted to swinguponthe braclretl, abput the pivot which of a; suitable handle 31. V The frictional engagement between the arms 15, 19 and the latch 22, produced by the pivot 23, allows adjustment of the arm 15 relatively to the plate 21; without necessarily displacing, the latch 22.

inv operating the device, ltis at first desirable toascertain just when the tone arm 18 should engage the trip arm 19, in order to automatically stop the machine when the record 20 has been completely reproduced. This may be accomplished by placing. a record 20 upon the record support 11 and. locating the reproducer needle at or near the endof the record thread. As practically all standard records haveseveral revolutions at the tliread end, entirely free from sound re producing undulations, it is not necessary to stop the machine at the exact moment the end of the thread is reached by the needle. Thetrip arm 19 may then be brought into engagement with the tone arm 18 as indicated in Fig. 1, by manipulating the indicator 211111.15, the frictional connection between the latch 2:2 and the arms 15, 19 permitting relative movement of these elements. The record 20. may then be marked on its faceor otherwise, with a number corresponding to the number on the graduated plate 21, with which the pointer registered when the trip arm shoe just engaged the stone arm 18.

the rim .28. As the brake 16 swings in an anti-clockwise direction, the relative movement of the brake 16 and latch causes the projection 25 of the latch to advance along the brake opening and to eventually strike the surface 24:. The inclination ofthis surthe beginning of the record thread, and this v thread being a spiral in, form automatically causes the tone arm 18 and rcproducer 29. to,

more in a clockwise direction about the tone arm axis, as the record QO. rotates. When the reproducer needle approaches the end of the record thread, the tonearm 18 engages the shoe of the trip arm 19 and gradually moves the triparm 19, indicator arm 15 and latch 22, about the pivot 23 in an ant-i clockwise direction. This motion of thelatch gradually slides the latch projection 25 along the brake abutment 26, returning the indicator arm 15 toward its initial position. is the arm 15 assumes its initial position the latch projection 25 is pushedoff of the abutment 26, and-the spring l'ii'becomes effective to quickly move the'brake 16 in a clockwise directionand to bring the brake shoe 32 into engagement with the rim 28. therebv stopping the machine. I

When it is desired to manipulate the brake manually and without utilizing the automatic stop, the brake 16 should. first. be set after which the trip and indicating arms 1%), 15sho-uld be swung in an anti-clockwise direction to such an extent that the tone arm 1 18 will not engage the projection 33 of the trip arm 19.

The brake 16 may then be manually released by swinging the operating lever 14: in a clockwise direction. After release, the brake 16 may be set manually by swinging the operating lever let in ah anti-clockwise direction until the rear end of the lever engages the projection 25 of the latch 22 and pushes this projection oil of the abutment 26, whereupon the spring 17' willimmediately become eli'ective tomove the brake shoe 32 into engagement withthe rim 28. i

The brake 16 may also be set by manually swinging the indicator arm 15 in an anticlockwise direction about its pivot 23,.this movement of the arm 15 simultaneouslv swinging the latch 22 in an anti-clockwise direction and causing the latch projection 25 to slide along and off of the brake abut-- ment 26. It will. thus be noted that while the brake 16 may be releasedto start themachine, only by operating. the lever. 14:, the

-brake may beset/to stop the machine at arm pivot, the radial distance between the trip arm shoe and the pivot 23, and the length of the latch 22, may be reduced to a minimum. With this construction, due to the relatively short radii, the projection 25 will be moved a sufiicient distance to produce disengagement between the latch projection 25 and the brake abutment 26, upon very slight angular displacement of the trip arm 19, thus producing a quick acting sensitive automatic stop. The location of the manually manipulable end of the operating lever 14: at the front of the machine,provides for easy manual actuation of the mechanism.

The various elements of the stopping mechanism may be readily manufactured from sheet metal with the use of dies at a very low cost. As none of the elements of the stopping mechanism require attachment to any of the phonograph parts other than the cover 10, the mechanism may be readily applied to any of the standard disk types of sound reproducing machines. All of the essential elements of the stopping mechanism being mounted upon the bracket 13,

makes it possible to exploit the device in assembled condition ready for attachment to the phonograph.

It should be understood that it is not desired to be limited to the exact details of construction herein shown and described, for various modifications within the scope of the appended claims may occur to persons skilled in the art.

It is claimed and desired to secure by Letters Patent:

1. In combination, a movable element, a brake for said element, means for setting said brake, latch means for holding said brake in release position, means movable in one direction to release said latch means to permit operation of said setting means and movable in the reverse direction to eifect release of said brake, a trip arm for releasing said latch means, and an indicator arm for releasing said latch means.

2. In combination, a rotary element, a brake for said element, means for setting said brake, a latch for holding said brake in release position, manually operable means movable in one direction to release said latch to permit operation of said setting means and movable in the reverse direction to move said brake to release position, a trip arm for releasing said latch, and anindicator aimv for releasing said latch.

3. In combination, a rotary element, a

brake forsaid element, a spring for setting said-brake,a latch for'holding said brake in releaseposition, an operating lever movable in one direction to release said latch to permit operation of said springand movable in the reverse direction to move said brake to release position, a trip arm for releasing said latch, and an indicator arm for releasing said In combination, a brake having a plurality of abutments, a latch having a projection engageable with one of said abut-r ments to hold said brake in released position, said brake having a surface formed to engage and move said latch projection into said engaging position upon movement of said brake, to released position and an operating lever engageable with another of said brake abutments to move said brake and said latch into said engaging position, said lever also being engageable with said latch projection to disengage said latch from said brake abutment.

5. In' combination, a brake having a plurality of abutments, a latch having a projection engageable with one of said abutments to hold said brake in released position, said brake having a surface formed to engage and move said latch projection into said engaging position upon movement of said brake to released position, an operating lever engageable with another of said brake abutments to move said brake and said latch into said engaging position, said lever also being engageable with said latch projection to disengage said latch from said brake abutment, and means for automaticall disen gaging said latch from said brake abutment at a predetermined time.

6. In combination, a rotary element, a brake for said element, a latch for holding said brake in released position, a manually operable lever cooperable directly with said brake to release the same and alternately cooperable with said latch to permit setting of said brake, a trip arm automatically cooperable with said latch to permit setting of said brake, and an indicator arm cooperable with said latch to permit setting of said brake.

7 In combination, a brake, a latch engageable with said brake to hold the same in released position, means for automatically placing said latch into brake engaging position upon release of said brake, a manually operable lever engageable with said brake to move the same into released position and engageable with said latch to disengage said latch from said brake, and other means for automatically disengaging said latch from said brake at a predetermined time.

8. In combination, a brakehaving a plurality of abutments, a latch engageable with one of said abutments to hold said brake in released position, means for placing said leased posit-ion andengagea ble with said:

for automatically disengaging said. latch from: saidffirst mentioned brake abutment at a pltedetermined time;

In iestimony whereaf, the signature of" the im'en'bov is afiixed: hereto.

OSWALD H. HAN-SEN,

latch: into said abutment engaging.- positien upon release of saidvbrakma manually: 0pemble lever engageable with anothen 015 said. brake abufinen'ts to anuvasaidbmke interelaichto disengage said latch from saidufirst mentloned brake abutment, and other means Copies of this mm may be obtained for five mam ea fii, addressing the Gummisaiemr oi" Eatems,

Washingtom 11*, 3G.

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