US1818720A - Web roll loading mechanism for printing presses - Google Patents

Description

Patented Au 11, 1931 UNITED s rATss PATENT orrlcr.

' Lennon, orem'rwoon. .nn'w Jnnsnir, nssrenon To B. nor: a co,

-- me. or m YORK, n. Y., A conrom 'rron or new You WEB ROLL LOADING MECHANISM FOR PRINTING DRESSES Application fled June 28,

The present invention relates to means for supporting web rolls used in connection with rotary printing presses which print one web of aper. I fihen the webis being fed to the press,

the web rolls are held so they may berptated to unwind them, and they are'som'etimes mounted on a shaft or spindle which passes throu h the core of the roll and extends beyon both ends. In these cases the spindle is usually centralized and secured to t e roll by tapered bushings whichengage the ends of the roll core, and the projecting ends of the spindle rest 1n suitable bearings so the roll may be rotated. a v

The use of spindles is objectionable'on account of their weight, for they cannot be conveniently'handled otherwise than manually, and a further objection is that when usin them,fl-c'onsiderable working space beyon the end of the roll is required in which to align. the spindle with the roll before it can be inserted;

Supports that directly engage the roll core 25 and do not sree uire the use of spindles'are sometimes u and a support of this type 1s shown herein. One objection to this type of support as heretofore used, is the difficulty that is experienced in loading the rolls into the support, which necessitates having the support arranged so that it can be lowered to bring it into alignment with the core of the roll. This is necessary in order that the cones which form the pivots for rotating the roll can be inserted and the support then raised, allowingthe roll to turn for unwindmg.

An object of the invention herein disclosed is to provide a convenient member for the lifting them to the position where they can be engaged by supports on which they may Still another objectof the invention is to provide a device for use with web roll supports that is of generally improved construction, simple, durable, inexpensive in conattachment of hoisting gear to web rolls for 1928. Serial No. 288,389.

" in the scope of which isclaimed, without departing from the spirit of the invention.

The invention has been illustrated in its preferred form in the accompanying drawin s, wherein;

igure 1 is a side view partly broken away and partly in section, of a web roll supported for unwinding, showing the hoisting gear at tached. 2

Figure 2 is a fragmentary' view partly in section showing the unwinding support disengaged 'from the roll; and

Figure 3 is a fragmentary view partly in section showing a modified form of the invention.

Referring to the drawings, 11 indicates a web roll having a tubular core '12. Arms 13 and 14 extend from a structure not shown which may be the frame of the press or they may be arms of a multi-armed rack adapted to hold aplurality of web rolls. The arms 13, 14 are provided with cylindrical bores 15 in each of which a support 16 is fitted to slide freely. The support 16 has a rack 17 out in its side which meshes with the pinion 18 se cured to the shaft 19. The lever 20 has a hub 21 that is'also secured to the shaft 19; It will thus be understood that the lever 20 pro vides a convenient means for rotating the shaft 19 and thus causing the sliding support 16,.to move to the right or left as desired.

One end of the support 16 is made with a reduced diameter 22 and forms a seat for the roller bearing #23 on which the sleeve 24 turns. A thrust washer 25 is set in a recess 95 in the support, 16 and provides an abutment for the ball thrust bearing 26 which bears againstthe flange 27 onthe sleeve 24 A thimble 28 is fitted over the sleeve 24: and rotates with it, being held in position by the washer 29 which is in turn held by the screw 40, threaded into the reduced portion 22 of the support, this assemblage forming a bearing on which the web roll may be rotated.

A lifting member 31 is made with a cylindrical portion 32 that fitswithin the core 12 and a head portion extending beyond the core and having an opening 33 shaped to fit the thimble 28 of the sup ort. In the preferred construction, it also as a groove 34 which forms a seat between the flanges 35 and 36 and serves to position the enga ing member or hook 37 of a hoisting gear w en it is brought into engagement with. the liftin member.

Referring to Figure 3 which s ows a modified form of the invention, the plug 38 is made with a recess 39 into which the race 40 of a ball bearing is fitted. The cone 41 of the bearing can revolve on the balls 42 but is held in place by the collar 43 which is secured to the plug by screws 44.

The head portion of the lifting member in this form is made solid and has a boss on its outer end and concentric therewith, arranged to engage the cone 41. It will be understood that with the parts in the position shown in Figure 3, the roll may be rotated on its axis for unwinding and that engagement with and disengagement from the support may be conveniently accomplished.

In practice, with the web roll resting on the floor, or it may be on a truck on which it is brought to the press, the lifting members 31 are inserted in the ends of the roll and the hooks 35' of a hoisting gear placed in the grooves 34 of the lifting members. The roll is then lifted to align its axis with the thimbles 28. of the support bearings which are then moved into the openings 33 of the hoisting sleeve. The hoisting hooks are then disconnected leaving the roll free to turn or unwinding.

While a groove has been selected as the preferred means of holding the hoisting connections in position it will e understood that various modifications of this arrangement maybe made within the scope of the claims.

.What I claim is:

1. Ina web supply mechanism for a printing press, a web roll having a tubular core,

separate lifting members fitting within each end of the core, a hoisting mechanism, and

supports having bearings adapted to engage the liftin members whereby the roll may be rotated a out its axis; said lifting members each "having a head portion formed to enlindrical portion and portion and fitted to a bearing on which the lifting member may be rotated; said head portion bein formed with a seat for an engaging member of a hoisting gear. 7

3.- In a lifting member for a web roll having a tubular core, a substantially cylindrical portion adapted to fit in the core, a head portion of larger diameter adapted to engage the end of the core, and a recess in the head portion concentric with the axis of the cyfitted to a bearing on which the lifting member may be rotated; said head portion having a circumferential groove forming a seat for a hoisting hook.

In testimony whereof, I aflix my signature.

FREDERICK LAMATSCH.

gage the end of the core and a circumfe'ren- I tial groove to engage with 'a hook of a hoisting gear.

2. In a lifting member for a web roll hav; ing a tubular core, a substantially c lindrical portion adapted to fit in the core, a sad portion of larger diameter adapted to enga e the end of the core, and a recess in the hea port1on concentric with the axis of the cylindrical

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