US3277596A - Mechanical page-turner - Google Patents

Description

MECHANICAL PAGE-TURNER Filed April 20, 1964 I n A. .11.: A

H a INVENTOR 27 Shqchor FIG-.3. BY 7 ATTORNEY United States Patent Ofl ice 3,277,595 Patented Oct. 11, 1966 3,277,596 MECHANICAL PAGE-TURNER Avi Shachar, Doar Na Merom Hagalil, Kibbutz Sasa, Israel Filed Apr. 20, 1964, Ser. No. 360,933 6 Claims. (Cl. 40104) The present invention concerns leaf turners for books, bound music and the like.

It is the object of the present invention to provide a leaf turner for books, bound music and the like which is adapted to be operated by simple mechanical means.

The invention is illustrated, by way of example only, in the accompanying drawings, in which:

FIG. 1 is a side elevation of a music stand equipped with the leaf turner according to the invention;

FIG. 2 is a partial elevational view thereof in the direction of the arrow of FIG. 1;

FIG. 3 is a section of the leaf turning mechanism according to the invention on an enlarged scale.

FIG. 4 is a view similar to that of FIG. 1, with a motor substituted for the actuation shown in FIG. 1.

The leaf turning mechanism according to the invention, generally indicated by 1, is supported on an arm 2 extending from a conventional music stand 3, which has collapsible legs 4 as known per se. To the top of stand 3, a book rest 5, which is made of two parts, collapsible onto each other, is attached. A cutout 5 is provided in the rest 5, through which cutout a spiral 6 projects, the outer end of the spiral being bent outward and merging into a loop 7. The inner end of spiral 6 is fixed to a sleeve 8 which is mounted by means of a setscrew 9 to a pawl supporting member 10 loosely turnable on a shaft 11, the outer end of which is threaded and extends through arm 2, being fixed thereto by means of a nut 12, 12' on either side of arm 2. A springy pawl 13 is fixed to and extends from the forward end of member 10 and is adapted to engage in a ramp depression 14 disposed in a disk 15 provided within sleeve 8 immovably fixed on the front end of shaft 11 by means of nut 16 with the interposition of a washer 17. A pawl 18 is fixed to the rear end of member 10 and is adapted to engage a ratchet tooth 19 provided in the actuating member 20 turnable on shaft 11. This member has an external circumferential groove 21 in which a cable 22, one end of which is fixed to said member 20, is adapted to be wound. The other end of said cable extends downwards through a tensioning device 23 to the free end of a foot pedal 24 articulated at 25 to a leg 4 of stand 3. Member 20 is provided with a depression 26 in its outer end in which a spiral spring 27, loosely wound around shaft 11, is housed. One end of spring 27 is fixed to said shaft and the other to said member 20. The end of member 20 is covered by a plate 28 through which shaft 11 loosely extends.

The leaf turner works as follows: the pages P of a note book, for example, to be turned one after the other, are inserted between the turns of spiral 6 in such a manner that the loop 7 is placed behind the first page to be turned. When now, in the position of rest of the mechanism, i.e. when a number of turns of cable 22 are wound around member 20, the foot pedal 24 is depressed, a rotation of member 20 results. This causes the engagement of tooth 19 with pawl 18 whereby spiral 6 is turned. Loop 7 making a sweeping motion pushes top page P slowly to the left (as seen in FIG. 1), and continues making a full turn so that now, since all the pages have been advanced by the spiral 6 for one turn, said loop comes to lie behind the page now uppermost.

When the cable is pulled and the member 20 is turned, spring 27 is automatically tensioned. The length of cable 22 pulled by the foot pedal 24 is such that member 20 makes one full turn. To this end the upwards and downwands movement of the foot pedal 24 is controlled by means of an adjustable stop 29 abutting the floor when the pedal is depressed and a stop 30 projecting sidewardly from the foot pedal and abutting against the bottom end of foot 4 when the foot pedal is released. When the foot pedal is released, spring 27 turns member 20 in the opposite sense of rotation, whereby tooth 19 is disengaged from pawl 18 and the cable is again wound in groove 21. The member 10 is prevented from turning in this same direction by the fact that pawl 13 engages in depression 14. It can thus be seen that while member 20 changes its direction of rotation during the pulling and release of cable 22, member 10 always turns in the same direction, i.e. it turns during the pulling of the cable and stands still during its release.

The spiral 6 may be of any suitable material, spring wires, plastic, sheet metal or the like. Instead of being mounted near the bottom of the support 5, the turning mechanism may be mounted near its top, a suitable cutout being provided therein.

Instead of the ratchet tooth and pawl mechanism described, any other suitable clutch mechanism can be used, which, when actuated, assures one full turn only of the spiral and prevents its turning in the opposite direction. Operation by a motor, which upon actuation, by a pedal and switch 34, makes one full turn each time, is shown in FIG. 4.

While the invention has been described in connection with and mounted on a music stand for turning music, it is, of course, applicable for turning the pages of any other kind of book and may be mounted on a book stand to be fixed near a sickbed or the like. The music stand may, furthermore, be mounted on or be incorporated with a piano.

I claim:

1. A page turner for books and music notes mounted on a stand which consists essentially of a support for a book or bound music, characterized by a closely wound spiral extending perpendicularly forward from the support, the front end of the spiral merging into an outwardly extending arm, the spiral being adapted to hold between each turn a page of the book or music in such a manner that the arm lies behind the first page to be turned, the arm being of a length to extend at least past the centerline of the book or music when the spiral is rotated, the rear end of the spiral being fixed to means which eifect said rotation in one direction only and in intermittent steps of one complete revolution.

2. A page turner for books and music notes mounted on a stand which consists essentially of a support for a book or bound music, characterized by a closely wound spiral extending perpendicularly forward from the support, the front end of the spiral merging into an outwardly extending arm, the spiral being adapted to hold between each turn a page of the book or music in such a manner that the arm lies behind the first page to be turned, the arm being of a length to extend at least past the centerline of the book or music when the spiral is rotated, the rear end of the spiral being fixed to a sleeve attached to a pawl-carrying member turnable on a shaft when being engaged by the tooth of an actuating member turnable on the shaft by the pull of a cable one end of which is attached to and wound on said actuating member, a spiral spring being provided within said actuating member to return it to its starting position after the pull of the cable has been released.

3. A page turner for books and music notes mounted on a stand which consists essentially of a support for a book or bound music, characterized by a closely wound spiral extending perpendicularly forward from the support, the front end of the spiral merging into an outwardly extending arm, the spiral being adapted to hold between each turn a page of the book or music in such a manner that the arm lies behind the first page to be turned, the arm being of a length to extend at least past the centerline of the book or music when the spiral is rotated, the rear end of the spiral being fixed to a sleeve attached to a pawl-carrying member turnable on a shaft when being engaged by the tooth of an actuating member turnable on the shaft by the pull of a cable one end of whi-ch'is attached to and wound on said actuating member, a pawl being provided on the pawl-carrying member to engage a ramp depression on a plate fixed to the shaft in such a manner that said pawl-carrying member and thus said spiral is prevented from making more than one full turn when said cable is pulled.

4. A page turner for books and music notes mounted on a stand which consists essentially of a support for a book or bound music, characterized by a closely wound spiral extending perpendicularly forward from the support, the front end of the spiral merging into an outwardly extending arm, the spiral being adapted to hold between each turn a page of the book or music in such a manner that the arm lies behind the first page to be turned, the aim being of a length to extend at least past the centerline of the book or music when the spiral is rotated, the rear end of the spiral being fixed to a sleeve attached to a pawl-carrying member turnable on a shaft when being engaged by the tooth of an actuating member turnable on the shaft by the pull of a cable one end of which is attached to and wound on said actuating member, a spiral spring being provided within said actuating member to return it to its starting position after the pull of the cable has been released, the other end of said cable being attached to a foot pedal which when depressed exerts a pull on the actuating member.

5. A page turner for books and music notes mounted on a. stand which consists essentially of a support for a book or bound music, characterized by a closely wound spiral extending perpendicularly forward from the support, the front end of the spiral merging into an outwardly extending arm, the spiral being adapted to hold between each turn a page of the book or music in such a manner that the arm lies behind the first page to be turned, the arm being of a length to extend at least past the centerline of the book or music when the spiral is rotated, the rear end of the spiral being fixed to a motor which effects one complete turn upon each actuation.

6. A music stand provided with a page turner comprising a closely wound spiral extending perpendicularly forward from the support of the book or bound music notes to be turned near the bottom of said support, the front end of the spiral merging into an outwardly extending arm, the spiral being adapted to hold between each turn a page of the book or music in such a manner that the arm lies behind the first page to be turned, the arm being of a length to extend at least past the centerline of the book or music when the spiral is rotated, the rear end of the spiral being fixed to means which effect said rotation in one direction only and in intermittent steps of one complete revolution.

References Cited by the Examiner UNITED STATES PATENTS 938,085 10/ 1909 Stragiotti et al. 84-486 2,885,806 5/1959 Storm et al -104 2,897,618 8/1959 Russell 40104 3,053,000 9/1962 Schmitt 40-104 EUGENE R. CAPOZIO, Primary Examiner.

' W. J. CONTRERAS, ASSiXfanI Examiner.

Claims (1)

1. A PAGE TURNER FOR BOOKS AND MUSIC NOTES MOUNTED ON A STAND WHICH CONSISTS ESSENTIALLY OF A SUPPORT FOR A BOOK OR BOUND MUSIC, CHARACTERIZED BY A CLOSELY WOUND SPIRAL EXTENDING PERPENDICULARLY FORWARD THE SUPPORT, THE FRONT END OF THE SPIRAL MERGING INTO AN OUTWARDLY EXTENDING ARM, THE SPIRAL BEING ADAPTED TO HOLD BETWEEN EACH TURN A PAGE OF THE BOOK OR MUSIC IN SUCH A MANNER THAT THE ARM LIES BEHIND THE FIRST PAGE TO BE TURNED, THE ARM BEING OF A LENGTH TO EXTEND AT LEAST PAST THE CENTERLINE OF THE BOOK OR MUSIC WHEN THE SPIRAL IS ROATED, THE REAR

Images