US1689106A

US1689106A - Leaf turner

Info

Publication number: US1689106A
Application number: US233934A
Authority: US
Inventors: Boyd Louis
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-11-17
Filing date: 1927-11-17
Publication date: 1928-10-23
Anticipated expiration: 1945-10-23

Description

Oct. 23, 1928. 1,689,}06

L. BOYD LEAF" TURNER Filed Nov. 17, 1927 2 Sheets-Sheet 1 Oct. 23, 1928. 1,689,106

' L. BOYD LEAF TURNER l Filed Nov. 1'), 19274 z sheets-sheet 2 www.

Patented ct. 23, 1928.

' Louis BOYD, or ooNNELLsvILLE, PENNSYLVANIA.

LEAF TURNER.

u Applicationled November 17, 1927. Serial No. 233,934.

The device forming the'subject matter of this application is a leaf turner of that general sort shown in my priorPatent No. 1,630,290,1issued May 31, 1927. The device includes a means V,whereby the. leaves of a book may be turned over, Ato display wall paper or anything else, the construct-ion being such that the book is restored to its original Y pendent position, after allof the leaves have been turned over, one at a time.

The present `invention aims, especially, to provide novel means for moving the Abook into the path of amechanism which holds the leaves, one at a time, within the range of a leaf turner. Another object of the invention is to provide novel means whereby after the last leaf has been turned, the'binding of the book may be invertedl or turned about an axis, thereby. to lrestore the book to its original pendent position. Y

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.y f

With the above and .other objects in view which will appearas the ceeds, the invention resides in the combina- 4 .tion and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the yinvention herein disclosed may be made within the scopefof what is claimed, without departing from the spirit of the invention.

In the drawings Figure 1 shows in side elevation, a device constructed in accordance with the invention; c Figure 2 is a front elevation of thestructure shown-in Figure 1;

Figure 3 is a bottom plan of the base;

Figure l is a view vsimilar to Figure 1 but A showing the partsasthey will appear when C the leaf turner cooperates Vwith the reverser to move the book forwardly so that the leaves respond readily to the suction mechanism;

Figure 5 isasectional elevationv showing the parts as they will appear when the reverser -and the leaf turner arein ,cooperating rela- `tion to rotate the binding of the book with ,50 -respectto a horizontal axis and to restore the 'description prodrive,

book to its original pendent position ;V

Figure 6 is a detail showing one of the sprocket chains;

Figure 7 is a detail showing one of the othv er sprocket chains;

Figure 8 is a sectional view illustrating the brake mechanism and portions of the reversing means;

Figure 9 isa view showing the partsv as they will appear whilst the binding of the book is being reversed to restore the book to its original pendent position delineated in Figure 1. f

'in carrying out the invent-ion there is provided a frame 1 including a base 2 and parallel vertical standards mounted on the base 2. The base 2 maybe'sustained by a foldable prop 5. vThe standards 43 have off-set p -upper ends 4 connected by a cross rod 6. Idle sprocket wheels 7 are journaled on the cross rod 6.

A shaft 8 is mounted to turn in the standards 3 and is located .near to the lower ends of the standards. There are sprocket wheels 9 on the shaft 8. A sprocket chain 10 is engaged with the sprocket Wheels 7-9 The numeral 11 marks a leaf turner, in the form of af rod, on which, if desired, rollers 114: may be journaled, therollers being adapted to lift the friction when the turner 11V cooperates with the leaves of a book as herein- 30 after described. By means of nuts` 12, one ,y end of the leaf turner 11 is held in a socket 111 on one of the chains 10. v The opposite end of the leaf turner 11 is engaged in a Ushaped bracket 15 on the other of the sprocket chains 85 10. Owing to the fact that the leaf turner or rod 11 is supported, merely, in the bracket 15, instead of being fastened securely in the bracket, the rod orturner 11 is driven by the J chain 10, the Lrod or carrier being merely supported in the bracket 15. The object of this one-chain drive is to keep the carrier rod level at all times. If there were a two-chain the carrier rod at times might. notbe level. The one-chain drive, prevents the chains 1() from being so yoked together by the carrier rod 411 that .the sprocket chains will jump off the sprocket wheelsi'? and 9.

There isa sprocket wheel 16 on` the end of the shaft 8the sprocket wheel v16 cooperat- 100 ing with a sprocket chain 17 engaged witlra sprocket wheel 18 on a` shaft 19 journaled in a bearing 20 on the base 2, the inner end of the sha-ft 19 carrying a sprocket wheel 2l cooperating with a sprocket chain 22 that is engaged with the sprocket wheel 23 on the shaft 24 of a motor 25 of any desired sort,

lpreferably an electric motor. The shaft 24 is Vturning movement by a brake mechanism which will now be described. One end of the tubular shaft 29 engages a fixed abutment 30 on the rod 6, an adjusting collar 31 being threaded `at 32l on the opposite ond of the shaft 29. The collar 31 engages oneend of a compression spring disposed about the rod 6, the opposite end of the spring en- Iragingv an abutment 34 on'the rod 6. It will be obvious that the pressure exerted by the spring 33- may be changed by shifting the collar 31 lengthwise of the shaft 29. The object in exerting a variable braking pressure on theshaft 29 is to adapt the device for use in connection with books of different weights, an observation which will be understood more readily after the operation of the device has been gone into..

Book holders 35, in the form of clamps, are

fsecured to the tubular shaft 29 and include screws 36 adapted to bind upon the butt ends of the leaves of a book 37. The clamps lor book holdersv35 have laterally extended, outwardly projecting arms 38. The device includes a reverser 39 Vwhich is U-shaped in elevation, as shown in Figure 2. The side Y portions of the reverser 39 are mounted as shown at 40 on the cross rod 6, so that the reverser :can swing on the cross rod. The

upper ends of the side portions of the rerVerser 39 form fingers 41 cooperating with the `arms38 on the book holders 35 in a way which will be described hereinafter. The side portions of the reverser 39 are curved as at 42 to form cam members.

VSo far as the drive is concerned, it will be understood that the motor 25 operates the shaft 24, the shaft driving the suction device 26, and the member 26 creating a suction on the conduit 27 The shaft 24 of the motor 25 rotates the sprocket wheel 23, and the chain 22, together with the sprocket wheel 21, rotates the shaft 19; and from the shaft Y19, .motion is transmitted to the shaft 8 by means of the sprocket wheel 18, the sprocket chain 17, andthe sprocket wheel 16. The sprocket wheels 9 on lthe shaft 8 actuate the sprocket lchains 10, and the chains 1() carry the leaf turner 1l in an orbit about the book 37.

`,ends of the leaves,

When the leaf turner 11 moves downwardly behind the standards 3, as shown in Figure 4 of the drawings, the leaf turner cooperates with the cam portions 42 of the reverser 39. This causes the reverser to swing to the right in Figure 4, andthe book 37 is carried to the right, so that the foremost leaf of the book is brought into theV field of suction at the mouth 28'0f the conduit 27. As soon as the leaf turner v11 rides off the cam at 42, the reverser 39 and all of the book 37 excepting the rst leaf, swings down and back into the position shown in Figurel l, the first leaf being held against the mouth 28 of the conduit 27, by suction. When the leaf turner 11 moves upwardly at the front of the stands ards 3, the leaf turner engages the leaf that is held by suction against the mouth k28 of the conduit 27, and turns that leaf over. One leaf after another, thus, is turned over,.as shown at 43 in Figure 9 to form a pendent portion. The lower end of the reverser 39 tends to swing forwardly, but the reverser 39 remains in the position of Figure 1, as

long as there isa single :leaf left, againstr over and back by the action of the turner 11,-

then the reverser'39 swings by gravity into the position of Figure 5, the lower end of the reverser then being in the path of the leaf turner 11, as the leaf turner moves upwardly. The leaf turner 11 now engages the lower end of the reverser, and swings'the reverser upwardly, backwardly and downwardly around an axis represented by the rod 6. When the reverser swings as aforesaid, the lingers 41 at the upper end of the reverser' cooperates with the arms 38 of the book clamps, and the book clamps (35) along with the butt ends of the leaves of the bookv 37, are swung around the cross rod 6 lfrom the position shown in Figure 9 to the position shown in Figure 1, whereupon the cycle is repeated.

What is claimed is 1. In a device of the class described, a frame, a book holder having an arm, a book including leaves, the butt ends of the leaves being held by the book holder, mechanism for mount-ing the book holder on the frame for rotation about an axis, a leaf turner, means `for mounting the leaf turner for'movement in an orbit about the book, means for moving the free ends of the leaves, one at a time, into the path of the turner, whereby the turner will turn the leaves backwardly and downwardly with respect to said axis, and a reverser mounted to swing on the frame and resting against the last leaf of the book, the turner engaging the reverser to carry the book toward the means for moving the free the reverser swinging into the path of the turner after the last leaf has illu been turned, whereby theturner will operate l l the reverser and cause the reverser to engage the arm, thereby to swing the holder and the butt ends of the leaves around said axis and to restore the book to its original position.

2. A device of the class described, con- 5 structed as set forth in claim l, and further characterized by the fact that said mechanism includes a tubular shaft carrying the holder and journaled on the frame, and means for applying an adjusted braking `pressure to the shaft thereby to limit its rotation and i0 i" to adapt the devicefor use in connection with books of diiferent Weights.

y Louis BOYD.