US3113743A - Removable core tip - Google Patents

Description

Dec. 10, 1963 A. L. HAY 3,113,743

REMOVABLE com: TIP

Filed March 10, 1959 ALEXAN DER L- HAY By W a A TTDRNM United States Patent ()fllice 3,113,743 Patented Dec. 10, 1963 3,113,743 REMDVABLE CORE Til Alexander L. Hay, Powell River, British Columbia, Canada, assignor to Mach Kilian liloedel and Powell River Limited, a corporation of British Columbia, Canada Filed Mar. ltl, 1959, Ser. No. 793,545 8 Claims. (Cl. 24268.6)

This invention relates to a removable tip for cylindrical cores, such as cores of the type used in newsprint rolls.

Newsprint is wound in large rolls on cylindrical cores ready for use on newspaper presses. These cores are formed of paper or cardboard tightly wound into cylindrical shape. There are cores that are discarded after use, and Others that are provided with permanently-mounted metal tips, the latter cores with their tips being returned after use to the newsprint producer. The tipped cores are preferred, and are in general use today. Tips of the type in use prior to this invention are permanently mounted on the cores so that the cores and tips have to be stored by the newspaper people, and then shipped back to the newsprint producers. This necessitates considerable storage space, plus the cost of returning the cores. Additional expense is incurred since the cores have to be reconditioned for use. Furthermore, such tipped cores can be re-used only a few times before they are unfit for further use.

An object of the present invention is the provision of a core tip that may be quickly and easily applied to the cores and removed therefrom so that only the tips are returned to the newsprint producers.

Another object is the provision of a removable tip equal in performance on newspaper presses to the type of tips which are permanently mounted on cores.

Another object is the provision of a removable core tip having one or more keyways therein so shaped to fit chuck keys of standard design.

Another object is the provision of a core tip of simple and comparatively inexpensive construction, but which is so designed to resist any crushing action to which the core on which it is mounted is subjected.

Another object is the provision of a removable core tip having one or more keyways therein, so shaped to fit chuck keys of standard design and to reduce the tendency of slippage of the keyways in one or more slots in the core ends regardless of methods used to drive, tension or brake newsprint rolls of newspaper presses.

Ano her object is the provision of a removable core tip having in the end wall two slots so located to permit easy wire strap baling of quarter and half size rolls according to standard procedures.

Another object is the provision of a removable core tip consisting of a single tubular sleeve which is reinforced at the ends thereof in a simple and efiicient manner.

Another object is the provision of a removable core tip of die pressed construction thereby reducing production costs substantially below the production costs of the type of tips which are permanently mounted on returnable cores.

A core tip according to the present invention consists of a single tubular sleeve having an end wall across and connected to the inner end thereof which braces the sleeve against any radial crushing action to which it may be subjected. This end wall is formed with an elongated slot therein through which a T-shaped key may extend. The key is formed with a long narrow head which fits through this slot, and when the key is turned, this head is moved across the slot so that it engages the end wall. The tip may now be quickly and easily removed from the core on which it is mounted. Another feature is that the sleeve is formed with an outwardly-extending flange on its outer end which preferably is radially curved in cross section. This forms a stiff brace at the outer end of the sleeve, and it engages the end of the core to limit the movement of the sleeve thereinto. One or more keyways is or are pressed outwardly of the sleeve and extend longitudinally thereof. Each keyway opens out from the outer end of the sleeve, and it bulges outwardly from the outer surface of the sleeve to fit into a slot in the core in which the sleeve is fitted.

An example of this invention is illustrated in the accompanying drawings, in which,

FIGURE 1 is an elevation of the outer end of a re movable core tip,

FIGURE 2 is a cross section taken on the line 2-2 of FIGURE 1, showing the tip inserted in a core,

FIGURE 3 is a section taken on the line 33 of FI URE 1, also showing the tip inserted in a core, and

FIGURE 4 is a perspective view of a key designed to be used with this core tip.

Referring to the drawings, iii is a removable core tip comprising a single tubular sleeve 12 of a size to fit snugly into the end 13 of a cylindrical core 14 such as is used in newsprint rolls. With the cores in common use, it is necessary to ream out the end thereof, as indicated at 15, to accommodate the sleeve 12 in order that the tip will fit standard chucks. However, the core may be made with a bore large enough to receive the tip. Sleeve 12 has an inner end 17, and an outer end 18. An end wall 22 extends across and is connected to the inner end 17 of the sleeve. Although the end wall may be made separately from the sleeve and connected thereto in any convenient manner, it is preferable to form the sleeve and wall from a single piece of suitable material by a pressing operation. End wall 22 is formed with an elongated slot 24 therein, and it is preferable to provide a re inforcing flange 25 at and surrounding the slot, said flange being integrally connected to the end wall. In addition to this, slots 26 and 27 may be provided in Wall 22 for the reception of baling wires when the tips are grouped for storage and shipment alone.

A flange 29 is formed on and extends outwardly in a substantially radial direction from the outer end 18 of sleeve 12. This flange reinforces and braces the outer sleeve end, and it is preferable radially to curve the flange in cross section, as clearly indicated at 33 in FIG URE 2. The outer edge 31 of the flange extends substantially in the direction of sleeve inner end 17.

At least one keyway 35 is pressed outwardly of sleeve 12 and extends longitudinally thereof, opening out from the sleeve outer end at 36. There are preferably two opposed keyways, as shown in the drawings. Each keyway opens longitudinally into the sleeve as at 38, and bulges outwardly from the outer sleeve surface, as shown at 39 in FIGURE 3. lange 29 is cut away at 41 over the outer end of each keyway 35.

Each keyway 35 is formed with opposed side walls 44 and 45 projecting substantially straight out from sleeve 12, and with a back wall 46 joining said side walls and extending inwardly to form an inclined inner end wall 47 for the keyway, said end wall being integrally connected to the sleeve.

Tips 10 are applied to the ends of core 14 after the newsprint is wound thereon. Prior to this each end of the core is reamed out at 15 to the depth of the tip in order to receive the latter. At the same time, each end of the core is formed with slots 52 of such size and depth as to receive keyways 35. The sleeve and its keyways fit snugly into the core end, and usually have to be tapped into place until flange 29 bears against the outer surface of core end 13. The flange limits the inward movement of the sleeve, and it protects the outer surface of the core end. As this flange is curved radially in cross section, it forms a strong brace for the outer end 18 of the sleeve.

3 At the same'time, end wall 22 braces the inner end 17 of the sleeve against radial crushing action so that core 14 is also braced internally by this wall.

When the newsprint roll including core 14 with tips is installed in a newspaper press, a key fits into one of the keyways 35. As walls 44 and 45 of these keyways project substantially straight out from the outer surface of sleeve 12, there is no possibility of the keys jumping out of the keyways during operation of the press. As flange 29 is cut away at 41 over each keyway, the latter may be made as deep as required.

When the core with its tips is taken off the press, the tips may be removed and the core discarded. This is accomplished by means of a key 55, see FIGURE 4, having an elongated head 56 on one end, and a handle 57 on the opposite end thereof. Head 56 is made as large as possible, but is shaped to pass through slot 24 in end Wall 22. Handle 57 extends substantially parallel with the key head so that when the handle is turned to extend across the slot, the head also extends across said slot, at which time said head bears against the edge of flange 25, and the key may be drawn outwardly relative to core 14 to remove tip 1%. Flange reinforces the end wall so that it will stand up to the force necessary to extract the tip.

This removable core tip eliminates the necessity of storing cores, shipping them back to the newspaper producers, and the necessity of repairing and otherwise maintaining the cores. The special bracing of both ends of the tip sleeve makes it possible to use a thinner metal than would otherwise be required. The tips themselves are continuously returned to the newsprint producer for re-use.

\Vhat I claim as my invention is:

1. A removable tip for cylindrical cores such as used in newsprint rolls, comprising a single unbroken diametrically rigid tubular sleeve of a size to fit snugly into the end of a core and having inner and outer ends, an end wall completely across and connected to the inner end of the sleeve to brace the latter against any radial crushing action to which the sleeve may be subjected, means connected to the outer end of the sleeve to engage the adjacent end of a core to limit the movement of the sleeve thereinto, and at least one keyway pressed outwardly of the sleeve extending longitudinally thereof and opening out from the sleeve outer end, said keyway longitudinally opening into the sleeve and bulging outwardly from the outer surface thereof to fit into a slot in the core end in which the sleeve is fitted.

2. A removable core tip as claimed in claim 1 in which the limiting means connected to the outer end of the sleeve comprises a substantially unbroken flange on said end and extending outwardly therefrom in substantially a radial direction, said flange being cut away over the outer end of each keyway formed in the sleeve, and said flange bracing the sleeve outer end.

3. A removable core tip as claimed in claim 2 in which the flange is radially curved in cross section with the outer edge of the flange extending substantially in the direction of the sleeve inner end.

4. A removable core tip as claimed in claim 1 in which the end wall is formed with an elongated slot therein through which a T-shaped key may extend to remove the tip from a core.

5. A removable tip for cylindrical cores such as used in newsprint rolls, comprising a single unbroken diametrically rigid tubular sleeve of a size to fit snugly into the end of a core and having inner and outer ends, an end Wall completely across and connected to the inner end of the sleeve to brace the latter against any radial crushing action to which the sleeve may be subjected, a substantially unbroken flange connected to the outer end of the sleeve and extending outwardly therefrom in substantially a radial direction, said flange bracing the sleeve and engaging the end of a core to limit the movement of the sleeve thereinto, and a pair of keyways pressed outwardly of the sleeve extending longitudinally thereof and opening out from the sleeve outer end through the flange, said keyways longitudinally opening into the sleeve and bulging outwardly from the outer surface thereof to fit into a slot in the core end in which the sleeve is fitted.

6. A removable core tip as claimed in claim 5 in which each keyway is formed with opposed side walls projecting substantially straight out from the sleeve, and with a back wall joining said side walls and extending inwardly at an end remote from the sleeve outer end to said sleeve to which it is integrally connected.

7. A removable core tip as claimed in claim 5 in which the end wall is formed with an elongated slot therein through which a T-shaped key may extend to remove the tip from a roll, and said wall being formed with a reinforcing flange at and surrounding said slot.-

8. A removable tip for cylindrical cores such as used in newsprint rolls, comprising a single unbroken diametrically rigid tubular sleeve of a size to fit snugly into the end of a core and having inner and outer ends, an end wall completely across and connected to the inner end of the sleeve to brace the latter against any radial crushing action to which the sleeve may be subjected, a flange formed on the outer end of the sleeve to engage the adjacent end of a core to limit movement of the sleeve thereinto, said flange being curved in cross section with the outer edge of the flange extending in the direction of the sleeve inner end, at least one keyway pressed outwardly of the sleeve extending longitudinally thereof and opening out from the sleeve outer end and through the flange, said keyway longitudinally opening into the sleeve and bulging outwardly from the outer surface thereof to fit into a slot in the core end in which the sleeve is fitted, and an elongated slot formed in the end wall centrally thereof through which a T-shaped key may extend to remove the tip from a r011, said end wall being formed with a reinforcing flange at and surrounding said slot.

References Cited in the file of this patent UNITED STATES PATENTS 1,241,193 Carlino et al Sept. 25, 1917 1,919,769 Brown et al July 25, 1933 2,045,035 La Rock June 23, 1936 2,049,334 Sobota July 28, 1936 2,269,939 Janisch Jan. 13, 1942 2,364,953 Daley Dec. 12, 1944 2,605,980 Atwood et al Aug. 5, 1952 2,760,732 Bebie Aug. 28, 1956

Claims (1)

1. A REMOVABLE TIP FOR CYLINDRICAL CORES SUCH AS USED IN NEWSPRINT ROLLS, COMPRISING A SINGLE UNBROKEN DIAMETRICALLY RIGID TUBULAR SLEEVE OF A SIZE TO FIT SNUGLY INTO THE END OF A CORE AND HAVING INNER AND OUTER ENDS, AN END WALL COMPLETELY ACROSS AND CONNECTED TO THE INNER END OF THE SLEEVE TO BRACE THE LATTER AGAINST ANY RADIAL CRUSHING ACTION TO WHICH THE SLEEVE MAY BE SUBJECTED, MEANS CONNECTED TO THE OUTER END OF THE SLEEVE TO ENGAGE THE ADJACENT END OF A CORE TO LIMIT THE MOVEMENT OF THE SLEEVE THEREINTO, AND AT LEAST ONE KEYWAY PRESSED OUTWARDLY OF THE SLEEVE EXTENDING LONGITUDINALLY THEREOF AND OPENING OUT FROM THE SLEEVE OUTER END, SAID KEYWAY LONGITUDINALLY OPENING INTO THE SLEEVE AND BULGING OUTWARDLY FROM THE OUTER SURFACE THEREOF TO FIT INTO A SLOT IN THE CORE END IN WHICH THE SLEEVE IS FITTED.

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