US1327621A - Leaf-turner - Google Patents

Description

'K'. 0, w. LINDQUIST.

LEAF TURNER.

APPLICATIQN FILED JAN. 19, 1917.

1,327,621.l Patented Jn.13,1920.

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KNU'T OLOF WILLIAM LINDQUIST, OF CHICAGO, ILLINOIS.

LEAF-TURNER.

Application filed January 19, 1917.

To all whom it may concern Be it known that I, KNUT OLoF TWILLIAM LINDQUIST, a subject of the King of Sweden, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements inn Leaf- Turners, of which the following is a specification.

This invention relates to `improvements in leaf turners and more particularly to a device for turning the leaves of sheet or book music. A further object is to provide a leaf turner that when once placed in engagement with the leaves to be turned will operate to turn them in one direction and, if desired, to return them to original position so that a performer may play musical passages printed on both sides of a sheet and then repeat the passages. With the foregoing and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described, pointed out in the appended claims and illustrated in the accompanying drawing which forms a part of this specification and in which- Figure 1 is a front elevation of the device with the operating rack and actuating lever removed.

Fig. 2 is a top plan'view of the device, partly in section, the operating rack and actuating lever being shown in operative connection with the device.

Fig. 3 is a fragmentary plan view.

Fig. 4 is a plan view of the working face of the operating rack.

Like reference characters denote corresponding parts throughout the several views.

The reference numeral 1 denotes the frame or stand of the turner and the same is provided with upper and lower alined bearings 2, 8 for the stationary shaft 4 provided with the head 5. Loose upon saidshaft` 11 is the disk 6 formed about a portion of its periphery with teeth 7 adjacent which its periphery is flattened as at 8 and said disk is formed with the integral stem 8a which extends through the center and stem 9 of another disk lO and said stem 8a terminates in an integral arm 11 which is terminally bent at l2 and ends in the heel 13. The said disk 10 is formed with peripheral teeth 14 and adjacent the same it is peripherally Hattened as at l5 and its stem 9 carries the integral arm 16 which is bent at a point 17 and terminates in a heel 18 similar to the said Specicaton of Letters Patent.

Patented Jan. 13,1920.

Serial No. 143,315.

heel13. The disk 6 is provided uponV its upper face with a lug 19 and the disk'10 upon its relatively lower face with avlug 20. An operating rack bar 21 of oblong shape is provided upon diametrically opposite corners of one of its flat faces with teeth 22, 23, the teeth 22 being adapted for engagement with the teeth 7 of disk 6 and the teeth 23 being adapted for engagement with the teeth 14 of disk l0. The said bar 21 carries upperandlower wire guard bars 2i, 25 adapted for engagement respectively` with the lugs 19, 2O and said bar itself is retained in operative position by the frame-fingers 26 `of said frame 1 and by the said guard bars 24, 25. The said bar 21 is'engaged `di rectly by the pitman 27 which is reciprocated by a hand lever 50.

To the shaft i the fingers 28 are pivotally connected and said fingers are adapted to lie fiat against each other and they are formed with relatively staggered or stepped shoulders 29 and 30, the shoulders 29 being adapted for engagement with the heels 18 of arms 16- and the shoulders 30 for vengagement with the heels 30 of the arms 11. The several fingers 28 extendradially from the shaft and are each engaged by expansion springs 81 which are connected, also, to the frame 1. Each finger 28 carries a spacer 32 for engagement with a sheet of music to be turned.

In operation the spacers 32 of the lingers 28 are placed between the sheets of music t0 be turned; the frame 1 being so positioned with relation to the music stand that the fingers 28 swing directly above the music sheet or book. The first sheet of music to be played is exposed to the view of the musician and between the first and second sheets ofmusic the spacer 82 of the first finger 28 is disposed, the Spacer 32 of the second finger 28beingdisposed between the second and third sheets ofmusic. As the device is operated by means of the hand or foot lever 50 the first finger 28 and spacer 32 to move will turn the first sheetof music over and expose the second sheetof music; the second finger 28 and Spacer 32 to move will turn the second sheet ofmusic yover and expose the third sheet of music and so on. Since thefirst finger 28 to be actuated is placed between the first and second 'sheets of music this finger 28 can, in its return movement, return the second sheet of music to original position but the first sheet of music must be manually returned by the musician or operator.

When the pitman 27 is moved in one direction by lever 50 the teeth 23 of bar 21 Will engage With the teeth 14 of the disk 10 and rotate that disk With its arm 16 Which arm having its heel 18 in engagement with the shoulder 29 of one of the fingers 28 will rotate that finger and turn a sheet of music1 the music being engaged by the spacer 32. It may be presumed that the operation just described is the one that has moved the finger 28 from the left to its position at the right in iFig. 1 as illustrated. During the movement just described it Will be noted the guard 24 has been in sliding engagement With the lug 19 of disk 6 so that accidental rotation of that disk has been avoided. A further movement of the pitman 27 in the same directionA will disengage the teeth 23 of bar 21 from the teeth 111- of disk 10 and so that disk together with its arm will cease movement. Just at this time the guard 24 passes out of vengagement with the lug 19 of the disk 6, the guard bar 25 slidably engages the lug 20 of disk 10 to prevent accidental movement of that disk and the teeth 22 of the bar 21 engage With the teeth Z of the disk 6 and rotate that disk together With its arm 11 and heel 13 Which is in engagement with the next linger 28 thus causing rotation of this finger and through the medium of spacer' 32 turning the next or second sheet of music and exposing to vieW the third sheet of music.

Should it be desired to turn back the second sheet of music so that a portion of it may be played over, or for other purpose, the pitman 27 is moved in a direction the reverse of its initial movement. This Will cause the teeth. 22 of bar 21 to rotate the disk 6 again and the teeth 23 to rotate the disk 10` again which latter movement will return the second sheet to original position. The springs 31 yieldinglyretain their respective fingers 28 in any adjusted position at either side of a line drawn to connect the point of contact of spring 31 With the frame 1 and the shaft 4L. As shown in Fig. 3 the spring 31 tends yieldingly, in either full line or dotted position, to retain the finger 28 under tension and to force it toward the stand 1 at one or the other side of the shaft 4. The heel 13 of arm 11 is permanently in engagement with the shoulder 30 of a finger 28 and the heel 18 of arm 16 is permanently in engagement With the shoulder 29 of another finger 28, this assures a movement to the right or left by any nger to correspond to such movement of thel heel to Which it is secured.

What is claimed is l. In a leaf turner, a frame, spaced frameiingers carried by said frame, a stationary7 shaft carried by said frame, superimposed rotary toothed disks loose upon said shaft, arms carried by said disks and arranged to swing one above the other with said disks, heels for said arms, a reciprocating rack bar r-flidable against said frame-fingers for alternate actuating engagement with said disks, guard bars carried by said rack bar for engagement with said disks when said disks are not operatively engaged by said rack bar, fingers pivotally connected to the afore said shaft and radiating therefrom, stepped shoulders formed upon said fingers and engaging the aforesaid heels, and spacers carried by said fingers.

2. in a leaf turner, a frame, spaced framefingers carried by said frame, a stationary shaft carried by said frame, superimposed rotary toothed disks loose upon said shaft, lugs arranged upon the relatively remote faces of said disks, arms carried by said disks and arranged to swing one above the other with said disks, heels carried by said arms, a reciprocating rack bar slidable against said frame-fingers for alternate actuating engagement With the toothed portions of said disks, guard bars carried by said rack for alternate engagement with the lugs of` said disks to retain them temporarily against rotation, one guard bar being' in engagement with one of said disk-lugs While that disk is out of operative engagement With the said rack bar, fingers pivotally connected to the aforesaid shaft and radiating therefrom, stepped shoulders formed upon said fingers and engaging the aforesaid heels, and spacers carried by said fingers.

In testimony that I claim the foregoing as my own 1 have hereto affixed my signature in the presence of tivo subscribing Witnesses.

KNUT OLOF WILLIAM LINDQUIST. [L Witnesses:

F. A.. SWANsoN, [Ls] O. L. BROLINE. [1.. s]

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