US2201937A - Chuck - Google Patents

Description

May 21, 1940.

H. A. w. wooD ET AL CHUCK 2 Sheets-Shet 2 Original Filed Dec. 7. 1936 ATTORNEY Patented May 21, 1940 UNITED STATES V-PATENT OFFICE 2,201,937 CHUCK Henry A. Wise Wood,

New York, N. Y., and

Original application December 7, 1936, Serial No. 114,546. Divided and this application June 26, 1937, Serial No. 150,650

3 Claims.

This invention relates to retractable chucks and has for an object to provide a device of this character which may be collapsed to a very small axial dimension.

The present application is a division of our copending application Serial No. 114,546, filed December 7, 1936. v

Our improved chuck is particularly adapted for use on paper roll stands or reels employed to support web rolls for newspaper'presses. Such reels usually consist of a pair of opposed spiders between which the Web rolls are supported. The spiders are mounted on a shaft by which they may be rotated to bring a fresh roll into operative position. The spiders are usually provided with several arms so as to support a number of rolls. Each arm of one spider is provided with a chuck having limited axial adjustment, while the arms of the opposite spider are provided with latching chucks capable of wide adjustment to permit of withdrawing them completely from the roll, so as to replace an expired rollwith a fresh roll.

An object of the present invention is to provide a latching chuck which although capable of Wide adjustment, is, at the same time, collapsible to a very small axial dimension.

The modern trend in mounting reels is to support them in brackets carried on the superstructure of the press. This imposes limits on the axial dimensions of the reel which make it necessary to employ a very compact latching mechanism. To this end our invention provides a latching chuck comprising a set of telescoping members adapted to be extended or retracted so as to engage or disengage the core of the web roll.

Other objects and advantages of our invention will appear in the following description of a preferred embodiment and thereafter the novelty and scope of our invention will be set forth in the claims.

In the accompanying drawings:

Figure 1 is a side elevation showing the opposite ends of a reel with the intermediate portion thereof broken away and illustrating particularly our improved collapsible chucks mounted on one of the spiders of the reel;

Fig. 2 is a fragmental view in vertical section showing the interior details of our improved latching clutch; and

Fig. 3 is a face view of the chuck shown in Fig. 2.

The reel shown in Figure 1 comprises a pair of pedestals l and II which provide bearings for a reel shaft 12 on which a pair of spiders l3 and I4 are mounted. The spiders while compelled to rotate with the shaft are adjustable axially there: on either in unison or relatively to each other in order to mount either fractional web rolls or full width web rolls. Such adjustment of the spiders, however, is not a part of the present invention which is concerned more particularly with the means for mounting the rolls in the spiders.

The reel spiders l3 and M are each formed with three arms so as to mount three paper rolls l8 simultaneously. Each roll is supported between a pair of chucks. The chucks 20 car-- ried by the arms 2| of the spider it have limited axial adjustment under control of a hand wheel 22. These chucks may be of the construction disclosed in copending application Serial Number 737,201, filed July 27, 1934, now patent -No. 2,095,019 of October 5, 1937. The latching chucks 24 carried by the arms 25 of the spider M are capable of considerable axial adjustment to permit of engaging or disengaging a roll 18 without shifting the spider M with respect to the spider IS.

The latching clutch, as shown particularly in Fig. 2, comprises an outer sleeve 26 which is fixed in the arm 25. This sleeve is formed internally with a right-hand thread, which thread extends to an extension of the stationary outer sleeve 25 and to an extension 26l on the other end and other side of the sleeve 26. A cover plate 21 is fixed to and closes the outer end of the sleeve 26. Guide pins 28 are carried by the plate 21 and project within the sleeve 26. These pins enter holes 29 formed in an inner sleeve 30, thereby preventing the latter from rotating, but permitting axial adjustment thereof. The sleeve 30 is formed with an external left-hand thread.

Between the sleeves 26 and 30 there is an intermediate sleeve 3! which is internally threaded to engage the left-hand threads of sleeve 30 and which is also formed externally with a short thread 32 adapted to engage the right-hand thread of the outer sleeve 26. It will be evident that if the intermediate sleeve is turned clockwise, as viewed in Fig. 3, it will be retracted or fed to the right, as viewed in Fig. 2, and at the same time the inner sleeve 30 will also be retracted, but to a greater extent. On the other hand, rotation of the intermediate sleeve in counter-clockwise direction will cause the inner sleeve to be advanced or fed toward the left, as viewed in Fig. 2.

A hand wheel 34 is provided to rotate the intermediate sleeve. This hand wheel is mounted to turn on a projecting end of the sleeve 26 and is held against axial displacement by a retaining ring 35. An outer ring 36 is secured byscrews 3'! to the exposed face of the hand wheel 34 and has projections 38 which cooperate with key- Ways formed in the exterior surface of the intermediate sleeve 3! (as shown in Fig. 3). The inner sleeve 30 carries a short chuck shaft or spindle 40 mounted in ball bearings 4| and 42 secured in position by a spacer l3 and a washer 44. The chuck shaft 45! is formed with a nose 45 adapted to enter the usual socket provided in the core of the paper roll.

In operation, when a roll I8 is to be mounted in the spiders the latching chuck is retracted by turning the wheel 34 clockwise, as viewed in Fig. 3. One end of the roll is mounted on the nose 23 of chuck 2G and then the nose 45 of the other chuck is projected into engagement with the opposite end of the core of the hole by turning the hand wheel counterclockwise, as viewed in Fig. 3. It will be observed that the chuck nose 45 may be very quickly retracted and projected because of the multiplying movement provided by the inter-threaded sleeves and that such adjustment is obtained with mechanism that is very compact and collapsible to a very small longitudinal dimension.

A slight adjustment of the roll with respect to the spiders may be effected by operating both hand wheels 22 and 34' to adjust the chucks 20 and 2 in the same direction. It will be understood, of course, that our chuck is equally applicable to a fixed paper roll stand.

While we have described a preferred embodiment of our invention will be understood that this is illustrative and not limitative and that we reserve the right to make various changes in form, construction, and arrangement of parts without departing from the spirit and scope of the invention as pointed out in the following claims.

We claim:

1. A device of the character described, comprising a relatively fixed bearing having an axial bore, a member axially movable within said bore, means for preventing rotation of said axially movable member, a rotatable tube fitted between said bearing and said member and having differential threaded engagement therewith whereby upon rotation of said tube said member will be fed axially but to a greater extend than said tube, an operating hand wheel for rotating the tube, said hand wheel being freely rotatable, means for preventing longitudinal motion of the hand wheel, and a chuck spindle carried by said axially movable member and mounted to rotate with respect to the same.

2. A device of the character described, comprising a relatively fixed sleeve, an axially movable sleeve, means for preventing rotation of the latter sleeve, one of the sleeves being disposed within the other, a rotatable tubular member fitted between said sleeves and having differential threaded engagement therewith whereby upon rotation of said member said movable sleeve will be fed axially but to a greater extent than said member, freely rotatable means for rotating said member, means carried on the tubular member or preventing longitudinal motion of the rotatable means, a chuck spindle carried directly by said axially movable sleeve, and horizontal guide pins in fixed position, the axially movable sleeve having perforations fitting said pins to provide a positive guide.

3. A device of the character described, comprising a relatively fixed bearing member having an axial bore, an inner member axially movable within said bore, means for preventing rotation of said inner member, a rotary tube fitted between said members and having right-hand threaded engagement with one of the members and left-hand threaded engagement with the other of the members, a freely rotatable hand wheel surrounding the tube for rotating it, means for holding the wheel against longitudinal motion, and a chuck spindle carried by the axially movable member and mounted to rotate with respect to the same.

HENRY A. WISE WOOD. PAUL L. TOLLISON. CHARLES L. RICARDS.

CERTIFI CA'IE- OF CORRECTION. Patent .No. 2,201,957. May 21, 191m.

HENRY A. WISE WOOD, ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, sec- 0nd column, line .5, claim 1, for the word "extend" read eXtent-" line 6, same claim, after "wheel" insert mounted on the tube; line 21, claim 2, for "means" read hand wheel means mounted on said tubular member-; line 25, same claim, for "or" before "preventing" read --for--; and that the said Letters Patent should be readwith this correction therein that the same may conform to the record of the case in the Patent Office. Signed and sealed this 2nd day of Jul A. D. 191m.

7 Henry Van Arsdale, (Seal) Acting Commissioner of Patents.

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