US1037988A - Core-chuck. - Google Patents

Description

E. RJRIGH'ARDS.

GORE CHUCK.

APPLICATION FILED SEPT. 26, 1910.

v 1,()37,988 Patented Sept. 10, 1912.

ATTOR N BY FIG. I.

I I W k i h 6 WITNESSES IN VENTOR [27252 E.Kz'c/2ard& M

ERNST B. RIGHARDS, OF

CHICAGO, ILLINOIS, ASSIGNOR TO SEARS, ROEBUC AND ('10.,

OF CHICAGO, ILLINOIS, A CORPORATION OF NEW YORK.

CORE-CHUCK.

Specification of Letters Patent.

Patented Sept. 10, 1912.

, i Application filed September 26, 1910. Serial No. 583,848.

To all whom it may concern Be it known that 1., Elmer R. RICHARDS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Im rovements in Core Chucks, of which the following is a specification.

' This invention relatejsto a chuck adapted to 100k a body to be rotated to a rotary shaft or spindle.

Ihe invention is especially adapted for looking a core upon which a roll of paper is wound to a suitable shaft or spindle so that the paper wound on the core may be unwound, or for the purpose of winding paper upon the core by rotation of said shaft.

One of the objects of this invention is to produce a chuck which may be roughly adjusted with relation to the object to-be rotated, and which will automatically tighten against said object upon rotation of one of said parts.

- Another object of the invention is to produce' a chuck of the character described which is simple, strong, cheaply manufactured and very durable.

Other objects and advantages will become apparent as the invention is better under- "stood from the following detailed description.

In the accompanying drawings, Figures 1 and 2 are, respectively, end and side elevations of one member of a chuck embodying the features of my invention. Figs. 3 and a are, respectively, side and end elevations of another member of the chuck. Fig. 5 is an elevation, partly in section, showing one .manner of using my invent-ion.

I have herein shown the invention as used for locking a hollow core A to a rotary shaft B for the purpose of permitting a roll of paper C upon the core A to be unwound, or for the purpose of winding pa'per upon said core by rotation of the shaft B. It will be understood that, in either case, a suitable support, having bearings for the shaft B will be provided, and if a roll of paper is to be unwound, suitable tension means may be connected with the shaft so that the paper will be unwound under the desired tension. I have deemed it unnecessary to illustrate the elements last mentioned, inasmuch asthey are well known and may be of any desired or preferred construction.

A chuck embodying my invention is partion depending upon ticularly well adapted, on account of its strength and durability, for use in conne tion with the large and heavy rolls of paper used by printing establishments.

Referring to Fig. 5, the chucks at opposite ends of the figure are identical in construction, with the exception that in one the spiral faces, to be later described, are righthand, while in the other they are left-hand. In the form herein shown by way of example, the chuck comprises a member 1 rotatably mounted upon, and slidable longitudinally of the shaft B, said member having a conical or tapered end 2 which is adapted toenter one end of the core A. A suitable lug orkey 3 upon the conical end 2 of the member is arranged to enter a notch a in the core A. so that said core and member will rotate together. A member 4 fitting upon the shaft B has one or more screwthreaded openings 5 therein, in which openings are threaded set screws 6 adapted to engage the shaft B for the purpose-of positively locking the member 4 against movement with relation to said shaft. The adjacent faces of the members 1 and 4c are spiral, said faces in the present instance representing one complete convolution of the spiral. It will be seen that when the core A is rotated in one direction to unwind the paper therefrom, the members 1 owing to the engagement of the key 3 in the notch 11' will rotate with the core. Assuming that the shaft B is under some tension as above explained, the section l of the chuck will not rotate. As the section 1 rotates, thcncam action of the contacting spiral faces on the sections will cause the section 1 to slide inwardly along the shaft B into engagement with the end of the core A. When the force pressing the sections 1 inwardly equals the tension. force holding the shaft B, the core A, the chucks and the shaft B will rotate as a unit. The spiral faces of the chuck sections are perpendicular to the axis of the shaft B at all points, so that all force transmitted to the members 1 will be directly along the axis of said shaft. In a similar way rotation of the shaft B in the proper direction to wind up paper on the core will cause the spiral facero n the member 4 to move the member 1 longitudinally of the shaft B, and into gripping engagement with the core A, the strength of the gripping acthe amount of resi butit is obvious that one of these chucks.

member for securing the first mentioned member against rotation on the shaft, the adjacent faces of said members being of spiral formation; and clamping means on 30 said shaft opposite the sliding member.

2. The combination of an'otary shaft, a hollow core surrounding the shaft, and a chuck carried by said shaftat each end of t e; core, each of said chucks comprising a 35 sec ion fixed to the shaft and a section r0- tattably and slid'ably mounted on the shaft, the latterfsectiom being cone shaped at one a'nce to rotation offered by the roll of paper In the present instance I have snown two of the chucks, one at each end of the core;

may be displaced by a chuck of solid construction, the result being merelythe dif; ference in the amount of automatic adjust ment which it will be possible to-"obtain It may also be seen that the core A may be of solid construction, the members 1 of the chucks being engaged with the core in any suitable Way. In, the case just mentioned, the shaft B would be displaced .by spindles upon the ends of which the chucks would be I mounted; saidsections and being of cam formation, Whe'jreby relative rotation of said sections :will-fo'rce the second mentioned section into ICOIG.

In testimony whereof I aflix my signature m pnesence of two witnesses.

vention. I therefore do not limit myself to the details herein shown and described.

claim as my invention:

1, The combination of a rotary shaft; a ERNST RJRICHARDS. member m unted-on said shaft; a member- \Vitnesses: slidably and rot-atably mounted upon said E. LENNOX, shaft; means independent of the slidable WM. 'PETTIGREW.

I Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

core, the adjacent facesof said sections ex- 40' ,engagementwith thee-adjacent end of said 45

Images