US1981556A - Collapsible winder shaft - Google Patents

Description

N 0 D T N A L v5 m R Y. B NM \Nv F. E. LANGDON Filed June 6, 1952 COLLAPSIBLE WINDER SHAFT Nov. 20, 1934.

3%1 5 7 F vw ATTORNEY Patented Nov. 20, 1934' 1,981,556"

UNITED STATES PATENT OFFICE COLLAPSIBLE WINDER SHAFT Frank E. Langdo'n, Vancouver, Wash. Application June 6, 1932, Serial No. 615,6 9 4 Claims. (01.- 242- 72) This invention relates'generally to the paper- In one end of the sleeveylo is inserted a..solid making industry,- and particularly to a collapsiextension .16 having its intermediatep'ortion 17' ble shaft on which paper is wound after being reduced in diameter, as shown. The extension manufactured, 16 has an enlarged bevelled flange 17a formed The main object of this invention is the prothereon which matches with a corresponding duction of an improved form of winding shaft of flange 18 on the sleeve 10, thereby forming a V the type disclosed in my former patents, Num groove for holding purposes, the welding metal bers 1,631,538 and 1,811,237. 19 being shown. I h

The second object is to so construct the col- I The member 16 has projecting therefrom a 19 lapsible portions of the shaft that they will be cylindrical portion 20 which is provided-with supported transversely across the width thereof three equi-distant grooves 21 which are in aligninstead of only along the center line, as was the ment with the slots 14. Through the portion 20 case in the patents above referred to. is formed a tapering recess 22. one side of which The third object is the construction of a shaft has a notch 23 formed therein for the reception 15 of the type referred to in which the problems of of the point 24 of an operating bar 25. The end manufacture and upkeep are reduced to a 26 is provided with an internal thread to receive inimum, the threaded portion 2719f a plug 28 provided The fourth object is the production of a colwith ahead 29 which may be flattened or prolapsible winder shaft capable of withstanding vided with holes 30 for a spanner wrench. From IO' severe abuse without being rendered inoperative. the head 29 projects a reduced shaft portion 31 These, and other objects, will become more apsimilar to a portion 32 which projects from the parent from the specification following as illuscylindrical portion 20. trated in the accompanying drawing, in which: The shaft portions 31 and 32 may journal in Fig. 1 is a longitudinal section taken through suitable bearingswhich form a part of the paper [6 the operating end of the shaft showing same in machine, or may constitute a means forlhandling 0 an expanded position, the view being taken along the shaft alone or with the paper wound thereon. the line 1-1 in Fig. 4. The plug 28 is held against rotation by means Fig. 2 is a longitudinal section similar to Fig. 1 of a pin 33 which itself is retained by means of a but showing the opposite end of the shaft also in tapering sleeve 34 whose square end 35 abuts 30' an expanded position. against the head 29.

Fig. 3 is a longitudinal section of the complete On the end 20 is slidably mounted a tube 36 shaft with the mid portion broken away and having an opening 37 formed in one side thereof t k n i a p n m l to h section hown through which the bar 25 may be inserted. The in Fi s- 1 a 2 Showing e jaw o the S aft tube 36 is provided with a reduced portion 38 5 in contracted position. which equals the outside diameter of the flange Fi 4 is a transverse Section ong the line 17a. The reduced portion 38 isalso provided with 4-4 in Fig. 1. holes 39 which are in alignment with the .three Fig. 5 is a transverse section along the line grooves 21 5-5 in Fig. 3. L Surrounding the sleeve" 10. are threearcuate 40 6 is an enlarged end elevation of 0119 of the jaws 40 which, when extended inthe form shown holdin riVetS- in Fig. 4, have their outer surfaces 41 lying within 7 is a Section Showing the holding rivet a complete circle constituting the interior of a in Sid elevation roll of paper 42. Each jaw 40"is providedwith a g- 3 is a Section taken thxjough the Cent/m1 plurality of transverse ribs 43 along the length 45 Portlon of one end of the devlce along the lme thereof. Eachrib 43 has one edge 44 bevelled to 10 8-8 in correspond with the side 13 of the groove 11-. similar numbers of reference refer to similar E i 43 is secured t th inner side ofits parts throughout the several views. jaw 41 by means of the rivets 45 and also by the Refe in detail to the drawing, there is reduced portion 46 of the rivet 4'7 whose cylin- 60 shown a central sleeve 10 made of heavy tubing drical head 48 is provided with a flattened pormaterial having turned in the surface thereof a tion 49 forming a T head whose under side 50 plurality of grooves 11 whose sides 12 are square is curled to correspond with the inner surface 51 and whose sides 13 are bevelled (as shown). of the sleeve 10.

Through the sleeve and intersecting each groove It can be seen that by flattening the sides 49 the 56 11 is a keyhole slot 14 having an enlarged end 15. wearing surfaces of the rivet 47 are greatly in- 11 creased and the tendency of the rivets to rotate is correspondingly decreased, in fact eliminated altogether.

The rivets 47 are secured in place on their respective jaws 40 and the heads 48 are permitted to pass through the enlarged ends of the keyhole slots 14 and. the entire jaw is then removed so as to bring the flattened surfaces 49 within the slot portions 14. Each jaw is then secured longitudinally to the tube 36 by means of its own pin 52 which is welded in place. Each pin 52 passes through its respective hole 39 into the groove 21. The purpose of the groove 21 is to hold the parts in proper alignment.

Within the sleeve 10 is placed a tension spring 53 one end of which is attached by an veyeboltv 54 to a washer 55 by means of a nut, 56. The washer 55 is limited in its rotation by means of a pin 57 for which the rivet heads 48 form stops. The opposite end of the spring 53 is connected by an eye bolt 58 to a washer- 59. A nut60 is placed on theend'of the bolt 58:0utside of the washer 59. The washer 59' engages the ends 61 0f the screws 62 which extend through thesides' of the sleeve 10 into the interior thereof The nut 60 may be prevented from rotating unless driven by an or-' dinary lock washer or by ins'erting'a pin 63 in the washer 59 and allowing its head to projectin the direction of the nut- 60, which nut is suitably recessed to receive the projecting pin end 63. This is a common expedient and of course will prevent the nut 60 from rotating, unless being turned with sufiicient force to lift the pin 63 out of the nut recess against the tension of the spring 53.

The operation of this form of the device is identical with those described in myformer patents and consists briefly of the following. When the shaft'is empty it is merelyplacedin position on the paper machine and the'paper started to wind thereon." It will be observed that the spring 53 has previously forced the jaws 40 in the direction of the sleeve 34, causing each jaw to move outwardly along its full length and to be supported transversely across its entire width. When the paper 42 is wound upon the roll to an extent at which it is desirable to remove same therefrom it is only necessary to insert the bar 25 and exert a pull which will move the tube 36 in the direction'of the shaft end 32, drawing all of the jaws 40 with it by reason of the pins 52 which attach the jaws tothe tube 36 permitting the jaws to contract, due to the fact that the ribs 43 are now in register with the grooves 11.

While I have illustrated and described my improved form of winding shaft as having a groove turned in the'arbor or sleeve 10, it is obvious that the same results may be obtained by utilizing a tubular sleeve whose outside diameter approximates'the present diameter at the bottom of the groove and adding thereto a hardened band whose outside diameter would approximate the present, outside tube diameter.

I claim:

1. A collapsible winder shaft having a central tubular sleeve containing aplurality of grooves formed around same along the length thereof, the correspondingedges of all of said grooves forming inclines with relation to the surface of the the cylindrical inner surface of each rib resting upon the cylindrical outer surface of the central sleevewhen the shaft is in the expanded position.

2. A'winder shaft as described in claim 1, together with a spring for urging said ribs out of said grooves into an expanded position, said shaft having an opening wherein may be inserted a lever opposed to said spring by means of which said ribs may be moved to and held in a contracted position within saidgrooves. a

I 3. A collapsible winder shaft comprising a central tubular sleeve having a series of encircling grooves formed around same along the length thereof; the corresponding edge of each groove sloping with relation to the axis of the ,sleeve, said sleeve having three longitudinally straightbut transversely arcuate jaws substantially encircling said sleeve, a plurality of arcuate ribs surrounding said sleeve, each rib being fastened to a jaw and occupying one of said grooves when the shaft is contracted, said sleeve having longitudinal keyhole slots formed therein, each jaw mem-' her having a T-head rivet projecting from its inner side through one of said keyhole slots, said rivet having the sides of its head flattened and slidably occupying the narrow portion of the key-v hole slot, a plug'threaded into one end 'of said sleeve having a shaft extension formed thereon, a'cylindrical member secured within the opposite end of said sleeve also having a shaft extension formed thereon, a tube slidably mounted on said cylindrical extension, said tube and cylindrical extension having registering openings formed therein, means for attaching each of said jaws to said tube in a manner to permit radial movement of said jaws, and spring means for urging all of said ribs in a direction which will cause said ribs to move out of said grooves onto the cylindrical outer surface of the sleeve.

4. A collapsible winder shaft having a tubular inner sleeve forming an arbor and characterized by having circumferential grooves formed along the length thereof, one corresponding edge of all of said grooves inclining with relation tothe axis of the sleeve, three separate transversely arcuate jaws enclosing said tube along its entire length, each of said jaws having inner ribs secured thereto each of which extends transversely of the jaw I and adapted to register with therespective sleeve 135 grooves for the purpose of permitting the attached jaw to move radially toward the axis of the sleeve, a spring for urging all of said jaws in a direction which will cause said ribs to ride up the inclined edges of the grooves onto the outer cylindrical circumference of the sleeve, for the purpose of locking the jaws in an expanded'position.

FRANK E. LANGDON.

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