CA1304734C - Rack for storing and dispensing rolled floor covering - Google Patents
Rack for storing and dispensing rolled floor coveringInfo
- Publication number
- CA1304734C CA1304734C CA000553574A CA553574A CA1304734C CA 1304734 C CA1304734 C CA 1304734C CA 000553574 A CA000553574 A CA 000553574A CA 553574 A CA553574 A CA 553574A CA 1304734 C CA1304734 C CA 1304734C
- Authority
- CA
- Canada
- Prior art keywords
- peripheral surface
- roll
- station
- chains
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F7/00—Show stands, hangers, or shelves, adapted for particular articles or materials
- A47F7/16—Show stands, hangers, or shelves, adapted for particular articles or materials for carpets; for wallpaper; for textile materials
- A47F7/17—Show stands, hangers, or shelves, adapted for particular articles or materials for carpets; for wallpaper; for textile materials in rolls or rolled tapes
- A47F7/175—Show stands, hangers, or shelves, adapted for particular articles or materials for carpets; for wallpaper; for textile materials in rolls or rolled tapes of carpets, wallpapers or fabrics
Abstract
RACK FOR STORING AND DISPENSING ROLLED FLOOR COVERING
ABSTRACT OF THE DISCLOSURE
A rack for supporting a plurality of rolls of sheet material particularly floor covering is defined by a frame structure carrying two chains one at each end with the chains arranged to rotate around upper and lower chain wheels. The chains rotate in synchronism with support hooks carried on the chains and aligned trans-versely of the chains. A wind up mechanism is attached to the frame at a forward station and comprises a pair of stub rollers one of which is rotated by a hand crank and expandable thereby to engage a tube and wind up material withdrawn from one of the rolls. A measuring device and transversely moveable knife blade are attached at the wind up station. A cylindrical core is provided with a pivotal edge clamp for the material to be wound. When latched in the clamping position a support wire holds the inside turn away from the core surface. When the clamp is released, the support wire folds down to reduce the diameter of the core and allow it to be pulled from inside the formed roll.
ABSTRACT OF THE DISCLOSURE
A rack for supporting a plurality of rolls of sheet material particularly floor covering is defined by a frame structure carrying two chains one at each end with the chains arranged to rotate around upper and lower chain wheels. The chains rotate in synchronism with support hooks carried on the chains and aligned trans-versely of the chains. A wind up mechanism is attached to the frame at a forward station and comprises a pair of stub rollers one of which is rotated by a hand crank and expandable thereby to engage a tube and wind up material withdrawn from one of the rolls. A measuring device and transversely moveable knife blade are attached at the wind up station. A cylindrical core is provided with a pivotal edge clamp for the material to be wound. When latched in the clamping position a support wire holds the inside turn away from the core surface. When the clamp is released, the support wire folds down to reduce the diameter of the core and allow it to be pulled from inside the formed roll.
Description
RACK FOR STORING AND DISPENSING ROLLED FLOOR COVERING
BACKGROUND OF THE INVENTION
This invention relates to a rack device for storing and dispensing rolled sheet material which is particularly but not exclusively used for floor covering either as carpet or vinyl flooring.
Stores selling such floor coverings must in many cases carry large quantities of the floor coverings and be in a position both to display the floor covering to a prospective purchaser and to dispense a measured length of the floor covering so that the purchaser can carry away his chosen purchase. In many cases this dis-play and dispensing is carried out in a very haphazard manner with the rolls being mounted merely upon an elon-gate pin or rod and the floor covering pulled out over an expanse of the floor and then cut to a measured length.
This is generally unsatisfactory in that it requires much labour and floor space in rolling and unrolling the material and in addition the floor covering material can become soiled.
Proposals have therefore been made to provide a rack device which comprises a pair of chains each of which rotates around upper and lower chain wheels with ~L
;~3~
the upper chain wheels being arranged to be coaxial and the lower chain and the lower chain wheels to be arranged coaxial. The chains support aligned support hooks for grasping and carrying the elongate pins or bars on which a roll is mounted. Thus a plurality of rolls can be mounted upon the chains and carried around so that a desired one of the rolls is presented forwardly to a position at which it can be inspected and the material withdrawn.
However these devices have generally not been satisfactory and have not included any arrangements for handling the floor covering so that it is handled in the normal way of pulling out a length onto an adjacent floor space and then rewinding the material into a roll or package for transportation by the purchaser. In addition the lifting of the heavy rolls onto the frame or rack has been carried out either manually with much difficulty or by fork-lift truck or by other labour intensive and com-plex techniques.
SUMMARY
It is one object of the present invention, therefore, to provide a rack of this general type which is improved so that it can, according to one aspect, cause the material to he properly rolled at a display ~3~4 ~
station forwardly of the rack to avoid the material hav-ing to be pulled from the roll over an adjacent floor space.
According to the invention there is provided a rack device for storing and dispensing rolled sheet material comprising a frame structure having ground engaging means such that the frame structure can stand on the ground defining an upper portion and a lower portion, two elongate flexible members each arranged adjacent a respective end of the frame structure, a first and second pair of wheels each pair arranged to engage and support a respective one of said flexible members such that it forms an endless loop with the pairs defining two upper wheels rotatable about a common upper axis and two lower wheels rotatable about a common lower axis, means for driving said flexible members such that they rotate synchronously about said upper and lower axes, each of said members carrying a plurality of support means there-on for rotation therewith, with the support means of one aligned with the support means of the other, said aligned support means being arranged to releasibly support an elongate member extending thereacross for receiving thereon a roll of said sheet material such that the rolls can be supported on the members in parallel spaced rela-~3~
tion for rotation therewith and presentation of each in turn at a station forwardly of the frame structure, means mounted at said station for winding up a length of said sheet material drawn from that roll presented at that time at said station, and a cylindrical body for receiv-ing said length of said material to be wound thereon, said cylindrical body having on an outer-peripheral surface thereof an elongate latch member mounted for pivotal movement about an axis longitudinal of the peri-pheral surface, said latch members having a latch portion extending outwardly to one side of said axis and movable between a grasping position in which it engages and grasps an edge of said material lying against said peri-pheral surface and a release position in which the latch portion is spaced from the peripheral surface to release the edge of the material, and a lift portion extending outwardly from said axis to a side opposed to said latch portion and arranged such that when said latch portion is in said grasping position said lift portion is raised relative to said peripheral surface and arranged so as to support the length of material away from the peripheral surface as it is rolled, and when said latch portion is in said raised position said lift portion lies flat against the peripheral surface so that the length of ~4~73~
material is no longer supported away from the peripheral surface and the cylindrical body can be pulled longitud-inally out of the rolled material, and means for locking said latch portion in said grasping position.
This enables the material to be readily wound onto a roll or core which is then removed for re-use while the material remains wound into the roll.
With the foregoing in view, and other advan-tages as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a front elevational view of a rack according to the invention with the rolls of floor cover-ing removed for convenience of illustration.
Figure 2 is an end elevational view of the rack of Figure 1.
Figure 3 is a front elevational view similar to Figure 1 on an enlarged scale of a portion only of the rack.
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Figure 4 is an enlarged view partly in cross section of the knife mechanism and metering roll of the rack of Figures 1 and 2.
Figure 5 is a front elevational view of a por-tion of one of the chains of the rack of Figure 1.
Figure 6 is a side elevational view of the portion of Figure 5.
Figure 7 is an enlarged view of one end roller of the wind up mechanism of the rack of Figure 3.
Figure 8 is an end elevational view of the roller of Figure 7.
Figure 9 is a side elevational view of one part of a support tube for rolling up the withdrawn material.
Figure 10 is a cross-sectional view along the lines 10 - 10 of Figure 9 showing the latching device for the material edge in release condition.
Figure 11 is a view similar to that of Figure 10 showing the latching device in grasping condition.
In the drawings like characters of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
The rack shown generally in Figures 1 and 2 comprises a pair of end plate members 10 and 11 which are formed of suitable frame members and covering end plates 13(~4'''~
to provide rigidity to the structure, as will be within the skill of a competent engineer. The end plate members 10 and 11 are interconnected by transverse beams 12 and 13 which again are constructed to provide stiffness against twisting both about vertical and horizontal axes of the frame structure. The transverse beams 12 and 13 are interconnected by stiffening struts 14 to form a complete rigid framework.
A lower end of the end plates 10 and 11 carries ground engaging legs 15 so that the frame structure can rest upon the ground and can extend therefrom upwardly to define a lower end 16 and an upper end 17 the latter of which may be at a height of the order of 8 to 12 feet depending upon the available ceiling height and other criteria of an engineering nature.
Each end plate member 10 and 11 encloses a flexible chain loop 18 and 19 shown only schematically in Figures 1 and 2 and carried by chain wheels 20, 21 and 22, 23. The chains thus wrap around the chain wheels to define a closed loop which has a forward run 191 and a rearward run 192 as shown in Figure 2.
The upper chain wheels 20 and 22 are mounted upon stub shafts 201, 221 for rotation about an upper horizontal axis which is common to the chain wheels and 1~04~
extends across the upper portion of the frame structure.
The lower chain wheels 21 and 23 are mounted upon a com-mon shaft 24 which extends across the lower portion of the frame structure. The chain wheel 22 is driven by a motor 25 via a gear box 26 and chains 27 and 28 so that the chains 18 and 19 rotate in synchronism around the axes defined by the upper and lower chain wheels.
Each chain carries a plurality of support members which are aligned transversely between the chains for carrying rolls of the floor covering material. In Figure 2 the support members are shown only schematically and indicated generally at 29.
In Figures 5 and 6 one of the support members is shown in more detail. Specifically one link of the chain 19 is indicated at 191 and comprises a pair of pivot pins 192 and 193 on which the next links pivot in conventional manner. The next links are for convenience of illustration not shown but it will be appreciated that the chain 19 is of a conventional nature.
The pivot pin 192 is an extended pivot pin so as to define an outwardly extending portion 194 which projects to the inwardly facing side of the chain 19.
Upon the portion 194 is mounted a pivot coupling 195 in the form of a bearing 196 with downwardly depending 1~4'73~
plates 197 and 198 to which is welded as indicated at 202 a hook member 200. The plates 197 and 198 are cranked outwardly at 201 so as to space the hook member inwardly from the remainder of the links of the chain. It will be appreciated that the pivot coupling 195 is free to pivot about the extension portion 194 so that gravity will tend to pull the hook downwardly so as to lie beneath the extension portion 194 regardless of the orientation of the associated link 191 which will of course vary as the chain extends around the chain wheels and passes along the forward and rearward runs.
The hook 200 includes a cup portion 203 and an upwardly projecting finger 204 which can receive and cradle an end 206 of an elongate rod 205. The head or end 206 acts to locate the rod so that it is prevented from sliding axially and dropping off the hook. The rod extends along the full length of the frame structure and carries a similar head at the opposed end for cooperation with a similar hook on the chain 18.
Reverting now to Figure 2, a first one of the rods is indicated attached to the chain 19 at 205A. The attachment linkage is shown only schematically for con-venience of illustration but it will be appreciated that it takes the form of the hook arrangement 200 of Figures 5 and 6. A second such bar 205B is positioned at the next ad~acent point on the chain 19 and sufficiently spaced from the first so that a roll can be carried at each point without the outside dimensions of the rolls of material interfering when carried by the chain. A third position is indicated at 205C and is at this stage free from the intended roll of the material. The intended roll is indicated generally at 30 and is positioned on a floor or support level indicated at 31. The roll of the material includes a tubular core 32 through which passes the bar 205D which is of the same construction as the bar 205 illustrated in Figure 5.
A lifting device in the form of an elongate bar for attaching the roll 30 to its intended location 205C
is shown generally at 33. The device comprises a first lever portion 331 and a second lever portion 332 each of which is pivotally coupled to a central manually actuable lever 333. The lsver 333 includes a crank portion 334 and a manually graspable handle 335. The pivotal connec-tion between the lever portions 331 and 332 and the cen-tral crank 334 are spaced so that the orientation of the central crank 334 determines the spacing between the outer ends of the lever portions 331 and 332.
The outer end of each of the lever portions 331 and 332 carries a loop 336 and 337 for engaging over the bars 205A and 205D respectively.
In use of the lifting device 33, the rotation of the chains 18 and 19 is halted with the bar 205A at the required position so that the upper loop 337 can just extend over that bar while the lower loop engages over the bar 205D. With the handle 335 released, the lever portions 331 and 332 and the central crank 334 take up a straight line with a maximum distance between the loops 336 and 337. The chains 18 and 19 are then moved so that the forward run moves upwardly by actuation of the motor 25. This draws the roll 30 inwardly and upwardly so that it lies along side the station 205C to which it is to be attached. At that point the handle 335 is pulled down-wardly so as to reduce the spacing between the loops 336 and 337 thus lifting the bar 205D over the front finger 204 of the respective hook 200. The handle 335 is then released lowering the bar 205D into the cup 203. The length of the lift mechanism 33 is arranged relative to the spacing between the positions 205A and 205C so that the lift mechanism can be removed when the bar 205D is supported in its respective hooks. It will of course be appreciated that two such lifting mechanisms 33 are provided one for each end of the bars 205 and for the ~3Q4~34 respective chains 18 and 19.
With the rolls of material thus loaded onto the chains 18 and 19, the rolls can be rotated by actuation of the motor 25 so that each in turn is presented for-wardly at an inspection and unwind station generally indicated at 34. A potential customer can then inspect each of the rolls in turn or may choose one of the rolls on the rack for particular inspection by rotating all of the rolls past the inspection station until the required roll reaches the station.
The inspection and unwind station 34 comprises a transverse beam 341 which extends along the full length of the frame and is coupled to each of the end plate members 10 and 11. The beam 341 is formed by two chan-nels 342 and 343 which are welded together inwardly facing at a weld line 345 thus leaving a slot 346 in an upper face thereof. Within each end of the beam 341 is mounted a chain wheel 347, 348 the latter of which is attached to a hand crank 349 which can be rotated manual-ly to rotate the chain wheel 348. The chain wheels carry a chain 350 which extends along the full length of the beam 341 with an upper and a lower run. The upper run carries a knife 35A which projects upwardly through the slot 346 and also carries a guard 351 which is mounted at ~3(~4'7~3~
a slightly forwardly inclined angle and acts to pr~vent engagement of the knife with ob;ects such as fingers which cannot slide beneath the guard. It will be aPpre-ciated therefore that manual operation of the hand crank 349 will cause the blade or knife mechanism 351 to run along the length of the beam 341 to cause slitting of floor covering material dra~ forwardly from the roll over the beam 341. It will also be noted in this regard that the beam 341 is supported forwardly of the forward face of the end plate member 11 by brackets 352.
A metering roll 36 is mounted at the end adja-cent the hand crank 349 so that it can be dropped into engagement with the floor covering material as it is drawn from the roll. Thus the metering roll 36 is mount-ed upon a bracket 361 carried on a strap 362 which is cantilevered outwardly to one side of a support mechanism 363. The support mechanism is best shown in Figure 4 and comprises a pair of upright brackets 364 and a transverse rod 365 supported on the upright bracket 364. The rod 365 is attached to a bistable spring mechanism 366 which includes a central spring 367 and a pair of end engaging members 368, 369 so that the spring tends to be bistable so that it can flip the roller 36 upwardly from contact with the material through a central position shown in 13~4'7~4 Figure 4 to a lower position in which the roller is pressed into contact with the material. The roller includes a counter 370 on which the length of material withdrawn from the roller is displayed so that the proper length as ordered can be measured.
A length of the material is drawn from the roll on the chains is withdrawn and wound up simultaneously by a wind up mechanism. The wind up mechanism is defined by a pair of stub rollers 370 and 371 each of which is mounted at a respective end of the frame. The stub rol-ler 370 simply comprises a short length of roller mounted upon bearings Garried on a shaft 371 attached by a bracket 372 to the end plate member 10. The diameter of the rollers is such that it is a loose fit inside a sup-port tube for the material. Thus the stub roller is presented on the shaft 371 for rotation about a horizon-tal axis common to the axis of the stub roller 371. The stub roller 371 is shown in more detail in Figures 7 and 8. That roller is mounted upon a shaft 374 carried in bearings 375 on the end plate member 11. The shaft 374 also carries a hand crank 376 by which the shaft can be rotated by manual actuation of the hand crank.
The roller body 373 is formed in three separate portions as shown in Figure 8 which can be expanded 13(~4~
radially by a ramp 377 actuated by a plate 378 which includes an internal screw thread for cooperation with a screw thread 379 on the shaft 374. Thus rotation of the hand crank initially acts to move the plate 378 axially along the roller body so as to expand the roller body into contact with a tube positioned thereon. The tube is not shown in Figure 1 but it will be appreciated that the tube can be moved into position initially by sliding the tube from a position adjacent the stub rollers onto one of the stub rollers until it can be aligned with the axis of the stub rollers following which it can be moved axially in the opposed direction to engage onto the other of the stub rollers. The expansion of the stub roller 373 to engage the inner surface of the tube thus acts to hold the tube in position to prevent its axial movement whlle further rotation of the hand crank 376 causes rota-tion of the tube to wind up the sheet material fed there-to.
In operation, therefore, the chosen sheet material is withdrawn manually to a position engaging the tube on the stub rollers and is attached thereto by for example adhesive tape. The measuring roller is then dropped into engagement with the material and the hand crank 376 actuated to roll the material onto the tube 1304~34 until the counter 370 has reached the required length of material measured. The knife 351 is then actuated by rotation of the hand crank 349 which is conveniently located adjacent the hand crank 376 to move the blade from one end of the frame to the other to sever the mate-rial. The wound material and supporting tube can then be removed from the stub-rollers for sale or delivery.
In an alternative arrangement (not shown) for use with carpet rolls, the simple elongate rod or pin which can support the interior of a roll of vinyl floor covering is replace by a cradle which supports the exter-ior of the heavier carpet. The cradle includes a frame having two pins at opposed ends for engaging the links as previously described. The cradle includes for example three sets of rollers at spaced positions therealong.
Each set has two upper rollers at the front and rear of the cradle and two lower guide rollers so that a belt can pass over the rollers in a loop defining an inner run supporting an exterior of the carpet roll.
Turning now to Figures 9, 10 and 11, a roll-up core is shown which can be mounted upon the stub rollers of the wind-up station as a removable and re-usable core which will generally be used in place of the availablP
card board cores when the length of material taken is 4-~3~
insufficient to warrant the use of a card board core.
The roll-up core comprises a tubular sleeve 40 defining a cylindrical body having a peripheral surface upon which the flooring material is to be rolled. The sleeve has open ends so it can be slipped onto the stub shafts as previously described.
On the outer face of the sleeve is mounted a pivot shaft 41 carried in suitable bushings 42 for pivotal movement about an axis longitudinal of the sleeve and at the peripheral surface of the sleeve. On one side of the pivot shaft is mounted a plate 44 which is arranged for grasping an edge 45 of the sheet material at the winding station. The plate 44 extends along the sleeve and is of narrow width merely sufficient to grasp the edge 45 and hold it in position as the sleeve commences in rotation so as to pull the material onto the roll in a winding action.
On an opposed side of the shaft 41 relative to the plate 44 is provided a support wire 46 which extends outwardly from the shaft and then along the shaft at a spacing from the shaft greater than the width of the plate 44.
The angle and positioning of the support wire and the clamping plate are shown in Figures 10 and 11 and it will be noted that they are movable about the pivot shaft 41 into two different positions as shown in Figures 10 and 11 respectively. Specifically in Figure 10 the wire 46 lies flat against the peripheral surface of the sleeve and the plate 44 is thus raised away from the peripheral surface into a release position. In Figure 11 the wire 46 is raised by a manual grasping of the wire to lift it away from the peripheral surface which acts to pivot the plate 44 into a clamping position to grasp the end 45 of the material. In Figure 11, the sleeve 40 has been rotated through one revolution to wind up one turn of the material onto the sleeve. It will be noted thus that the material is obliged to pass over the support wire 46 so as to increase the diameter of the material wrapped around the roll.
The latching mechanism provided by the support wire and the plate 44 are freely pivotable on the shaft 41 but can be locked into the position shown in Figure 11 that is the grasping position by the cooperation of a slide member 47 and a leg 48 depending downwardly from the wire 46. In the position shown in Figure 10, the leg 48 projects into an opening 49 in the surface of the sleeve. In the position shown in Figure 11, the leg is prevented from entering the opening 49 by the slide ~(3 4~Y34 member 47 which can be moved longitudinally of the sleeve by a manually graspable handle 50 so as to move it from a latching position to a release position.
In operation of the device, the sleeve as shown in Figure 11 is rotated until the measured length of the material is wrapped in spiral turns on the sleeve 40.
The handle 50 is then actuated to release the latching member from its position shown in Figure 11 so that it can collapse into the position shown in Figure 10 which is as will be apparent of reduced diameter relative to the inside turn of the material wrapped on the sleeve.
The sleeve and latching mechanism are therefore free to be pulled from the interior of the formed roll. In practice, before the sleeve is removed from the roll, the sleeve and the roll are dropped from the stub rollers onto a cradle 51 formed by a pair of brackets extending outwardly from the front of the frame at a position beneath the winding station. The roll is thus supported upon the brackets 51 and the sleeve can be pulled manual-ly from the end of the roll by grasping a loop type handle 52 arranged on one end of the sleeve. In Figure 9 is shown only one-half of the wind-up core and the second latching member can be provided on the core in the other half operable from the opposed end of the core.
~3U~34 In an alternative arrangement of the drive mechanism shown ln Figure 1, the drive to the main drive wheels 20 and 22 is provided by a shaft extending along the full length of the frame with the shaft carrying at each end a length of chain welded around the shaft so as to cooperate with the sprocket teeth of the main drive wheel 20 and 22 respectively. The shaft is then driven directly by a motor.
Since various modifications can be made in my invention as hereinabove described, and many apparently widely different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, it is intended that all matter contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
BACKGROUND OF THE INVENTION
This invention relates to a rack device for storing and dispensing rolled sheet material which is particularly but not exclusively used for floor covering either as carpet or vinyl flooring.
Stores selling such floor coverings must in many cases carry large quantities of the floor coverings and be in a position both to display the floor covering to a prospective purchaser and to dispense a measured length of the floor covering so that the purchaser can carry away his chosen purchase. In many cases this dis-play and dispensing is carried out in a very haphazard manner with the rolls being mounted merely upon an elon-gate pin or rod and the floor covering pulled out over an expanse of the floor and then cut to a measured length.
This is generally unsatisfactory in that it requires much labour and floor space in rolling and unrolling the material and in addition the floor covering material can become soiled.
Proposals have therefore been made to provide a rack device which comprises a pair of chains each of which rotates around upper and lower chain wheels with ~L
;~3~
the upper chain wheels being arranged to be coaxial and the lower chain and the lower chain wheels to be arranged coaxial. The chains support aligned support hooks for grasping and carrying the elongate pins or bars on which a roll is mounted. Thus a plurality of rolls can be mounted upon the chains and carried around so that a desired one of the rolls is presented forwardly to a position at which it can be inspected and the material withdrawn.
However these devices have generally not been satisfactory and have not included any arrangements for handling the floor covering so that it is handled in the normal way of pulling out a length onto an adjacent floor space and then rewinding the material into a roll or package for transportation by the purchaser. In addition the lifting of the heavy rolls onto the frame or rack has been carried out either manually with much difficulty or by fork-lift truck or by other labour intensive and com-plex techniques.
SUMMARY
It is one object of the present invention, therefore, to provide a rack of this general type which is improved so that it can, according to one aspect, cause the material to he properly rolled at a display ~3~4 ~
station forwardly of the rack to avoid the material hav-ing to be pulled from the roll over an adjacent floor space.
According to the invention there is provided a rack device for storing and dispensing rolled sheet material comprising a frame structure having ground engaging means such that the frame structure can stand on the ground defining an upper portion and a lower portion, two elongate flexible members each arranged adjacent a respective end of the frame structure, a first and second pair of wheels each pair arranged to engage and support a respective one of said flexible members such that it forms an endless loop with the pairs defining two upper wheels rotatable about a common upper axis and two lower wheels rotatable about a common lower axis, means for driving said flexible members such that they rotate synchronously about said upper and lower axes, each of said members carrying a plurality of support means there-on for rotation therewith, with the support means of one aligned with the support means of the other, said aligned support means being arranged to releasibly support an elongate member extending thereacross for receiving thereon a roll of said sheet material such that the rolls can be supported on the members in parallel spaced rela-~3~
tion for rotation therewith and presentation of each in turn at a station forwardly of the frame structure, means mounted at said station for winding up a length of said sheet material drawn from that roll presented at that time at said station, and a cylindrical body for receiv-ing said length of said material to be wound thereon, said cylindrical body having on an outer-peripheral surface thereof an elongate latch member mounted for pivotal movement about an axis longitudinal of the peri-pheral surface, said latch members having a latch portion extending outwardly to one side of said axis and movable between a grasping position in which it engages and grasps an edge of said material lying against said peri-pheral surface and a release position in which the latch portion is spaced from the peripheral surface to release the edge of the material, and a lift portion extending outwardly from said axis to a side opposed to said latch portion and arranged such that when said latch portion is in said grasping position said lift portion is raised relative to said peripheral surface and arranged so as to support the length of material away from the peripheral surface as it is rolled, and when said latch portion is in said raised position said lift portion lies flat against the peripheral surface so that the length of ~4~73~
material is no longer supported away from the peripheral surface and the cylindrical body can be pulled longitud-inally out of the rolled material, and means for locking said latch portion in said grasping position.
This enables the material to be readily wound onto a roll or core which is then removed for re-use while the material remains wound into the roll.
With the foregoing in view, and other advan-tages as will become apparent to those skilled in the art to which this invention relates as this specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a front elevational view of a rack according to the invention with the rolls of floor cover-ing removed for convenience of illustration.
Figure 2 is an end elevational view of the rack of Figure 1.
Figure 3 is a front elevational view similar to Figure 1 on an enlarged scale of a portion only of the rack.
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Figure 4 is an enlarged view partly in cross section of the knife mechanism and metering roll of the rack of Figures 1 and 2.
Figure 5 is a front elevational view of a por-tion of one of the chains of the rack of Figure 1.
Figure 6 is a side elevational view of the portion of Figure 5.
Figure 7 is an enlarged view of one end roller of the wind up mechanism of the rack of Figure 3.
Figure 8 is an end elevational view of the roller of Figure 7.
Figure 9 is a side elevational view of one part of a support tube for rolling up the withdrawn material.
Figure 10 is a cross-sectional view along the lines 10 - 10 of Figure 9 showing the latching device for the material edge in release condition.
Figure 11 is a view similar to that of Figure 10 showing the latching device in grasping condition.
In the drawings like characters of reference indicate corresponding parts in the different figures.
DETAILED DESCRIPTION
The rack shown generally in Figures 1 and 2 comprises a pair of end plate members 10 and 11 which are formed of suitable frame members and covering end plates 13(~4'''~
to provide rigidity to the structure, as will be within the skill of a competent engineer. The end plate members 10 and 11 are interconnected by transverse beams 12 and 13 which again are constructed to provide stiffness against twisting both about vertical and horizontal axes of the frame structure. The transverse beams 12 and 13 are interconnected by stiffening struts 14 to form a complete rigid framework.
A lower end of the end plates 10 and 11 carries ground engaging legs 15 so that the frame structure can rest upon the ground and can extend therefrom upwardly to define a lower end 16 and an upper end 17 the latter of which may be at a height of the order of 8 to 12 feet depending upon the available ceiling height and other criteria of an engineering nature.
Each end plate member 10 and 11 encloses a flexible chain loop 18 and 19 shown only schematically in Figures 1 and 2 and carried by chain wheels 20, 21 and 22, 23. The chains thus wrap around the chain wheels to define a closed loop which has a forward run 191 and a rearward run 192 as shown in Figure 2.
The upper chain wheels 20 and 22 are mounted upon stub shafts 201, 221 for rotation about an upper horizontal axis which is common to the chain wheels and 1~04~
extends across the upper portion of the frame structure.
The lower chain wheels 21 and 23 are mounted upon a com-mon shaft 24 which extends across the lower portion of the frame structure. The chain wheel 22 is driven by a motor 25 via a gear box 26 and chains 27 and 28 so that the chains 18 and 19 rotate in synchronism around the axes defined by the upper and lower chain wheels.
Each chain carries a plurality of support members which are aligned transversely between the chains for carrying rolls of the floor covering material. In Figure 2 the support members are shown only schematically and indicated generally at 29.
In Figures 5 and 6 one of the support members is shown in more detail. Specifically one link of the chain 19 is indicated at 191 and comprises a pair of pivot pins 192 and 193 on which the next links pivot in conventional manner. The next links are for convenience of illustration not shown but it will be appreciated that the chain 19 is of a conventional nature.
The pivot pin 192 is an extended pivot pin so as to define an outwardly extending portion 194 which projects to the inwardly facing side of the chain 19.
Upon the portion 194 is mounted a pivot coupling 195 in the form of a bearing 196 with downwardly depending 1~4'73~
plates 197 and 198 to which is welded as indicated at 202 a hook member 200. The plates 197 and 198 are cranked outwardly at 201 so as to space the hook member inwardly from the remainder of the links of the chain. It will be appreciated that the pivot coupling 195 is free to pivot about the extension portion 194 so that gravity will tend to pull the hook downwardly so as to lie beneath the extension portion 194 regardless of the orientation of the associated link 191 which will of course vary as the chain extends around the chain wheels and passes along the forward and rearward runs.
The hook 200 includes a cup portion 203 and an upwardly projecting finger 204 which can receive and cradle an end 206 of an elongate rod 205. The head or end 206 acts to locate the rod so that it is prevented from sliding axially and dropping off the hook. The rod extends along the full length of the frame structure and carries a similar head at the opposed end for cooperation with a similar hook on the chain 18.
Reverting now to Figure 2, a first one of the rods is indicated attached to the chain 19 at 205A. The attachment linkage is shown only schematically for con-venience of illustration but it will be appreciated that it takes the form of the hook arrangement 200 of Figures 5 and 6. A second such bar 205B is positioned at the next ad~acent point on the chain 19 and sufficiently spaced from the first so that a roll can be carried at each point without the outside dimensions of the rolls of material interfering when carried by the chain. A third position is indicated at 205C and is at this stage free from the intended roll of the material. The intended roll is indicated generally at 30 and is positioned on a floor or support level indicated at 31. The roll of the material includes a tubular core 32 through which passes the bar 205D which is of the same construction as the bar 205 illustrated in Figure 5.
A lifting device in the form of an elongate bar for attaching the roll 30 to its intended location 205C
is shown generally at 33. The device comprises a first lever portion 331 and a second lever portion 332 each of which is pivotally coupled to a central manually actuable lever 333. The lsver 333 includes a crank portion 334 and a manually graspable handle 335. The pivotal connec-tion between the lever portions 331 and 332 and the cen-tral crank 334 are spaced so that the orientation of the central crank 334 determines the spacing between the outer ends of the lever portions 331 and 332.
The outer end of each of the lever portions 331 and 332 carries a loop 336 and 337 for engaging over the bars 205A and 205D respectively.
In use of the lifting device 33, the rotation of the chains 18 and 19 is halted with the bar 205A at the required position so that the upper loop 337 can just extend over that bar while the lower loop engages over the bar 205D. With the handle 335 released, the lever portions 331 and 332 and the central crank 334 take up a straight line with a maximum distance between the loops 336 and 337. The chains 18 and 19 are then moved so that the forward run moves upwardly by actuation of the motor 25. This draws the roll 30 inwardly and upwardly so that it lies along side the station 205C to which it is to be attached. At that point the handle 335 is pulled down-wardly so as to reduce the spacing between the loops 336 and 337 thus lifting the bar 205D over the front finger 204 of the respective hook 200. The handle 335 is then released lowering the bar 205D into the cup 203. The length of the lift mechanism 33 is arranged relative to the spacing between the positions 205A and 205C so that the lift mechanism can be removed when the bar 205D is supported in its respective hooks. It will of course be appreciated that two such lifting mechanisms 33 are provided one for each end of the bars 205 and for the ~3Q4~34 respective chains 18 and 19.
With the rolls of material thus loaded onto the chains 18 and 19, the rolls can be rotated by actuation of the motor 25 so that each in turn is presented for-wardly at an inspection and unwind station generally indicated at 34. A potential customer can then inspect each of the rolls in turn or may choose one of the rolls on the rack for particular inspection by rotating all of the rolls past the inspection station until the required roll reaches the station.
The inspection and unwind station 34 comprises a transverse beam 341 which extends along the full length of the frame and is coupled to each of the end plate members 10 and 11. The beam 341 is formed by two chan-nels 342 and 343 which are welded together inwardly facing at a weld line 345 thus leaving a slot 346 in an upper face thereof. Within each end of the beam 341 is mounted a chain wheel 347, 348 the latter of which is attached to a hand crank 349 which can be rotated manual-ly to rotate the chain wheel 348. The chain wheels carry a chain 350 which extends along the full length of the beam 341 with an upper and a lower run. The upper run carries a knife 35A which projects upwardly through the slot 346 and also carries a guard 351 which is mounted at ~3(~4'7~3~
a slightly forwardly inclined angle and acts to pr~vent engagement of the knife with ob;ects such as fingers which cannot slide beneath the guard. It will be aPpre-ciated therefore that manual operation of the hand crank 349 will cause the blade or knife mechanism 351 to run along the length of the beam 341 to cause slitting of floor covering material dra~ forwardly from the roll over the beam 341. It will also be noted in this regard that the beam 341 is supported forwardly of the forward face of the end plate member 11 by brackets 352.
A metering roll 36 is mounted at the end adja-cent the hand crank 349 so that it can be dropped into engagement with the floor covering material as it is drawn from the roll. Thus the metering roll 36 is mount-ed upon a bracket 361 carried on a strap 362 which is cantilevered outwardly to one side of a support mechanism 363. The support mechanism is best shown in Figure 4 and comprises a pair of upright brackets 364 and a transverse rod 365 supported on the upright bracket 364. The rod 365 is attached to a bistable spring mechanism 366 which includes a central spring 367 and a pair of end engaging members 368, 369 so that the spring tends to be bistable so that it can flip the roller 36 upwardly from contact with the material through a central position shown in 13~4'7~4 Figure 4 to a lower position in which the roller is pressed into contact with the material. The roller includes a counter 370 on which the length of material withdrawn from the roller is displayed so that the proper length as ordered can be measured.
A length of the material is drawn from the roll on the chains is withdrawn and wound up simultaneously by a wind up mechanism. The wind up mechanism is defined by a pair of stub rollers 370 and 371 each of which is mounted at a respective end of the frame. The stub rol-ler 370 simply comprises a short length of roller mounted upon bearings Garried on a shaft 371 attached by a bracket 372 to the end plate member 10. The diameter of the rollers is such that it is a loose fit inside a sup-port tube for the material. Thus the stub roller is presented on the shaft 371 for rotation about a horizon-tal axis common to the axis of the stub roller 371. The stub roller 371 is shown in more detail in Figures 7 and 8. That roller is mounted upon a shaft 374 carried in bearings 375 on the end plate member 11. The shaft 374 also carries a hand crank 376 by which the shaft can be rotated by manual actuation of the hand crank.
The roller body 373 is formed in three separate portions as shown in Figure 8 which can be expanded 13(~4~
radially by a ramp 377 actuated by a plate 378 which includes an internal screw thread for cooperation with a screw thread 379 on the shaft 374. Thus rotation of the hand crank initially acts to move the plate 378 axially along the roller body so as to expand the roller body into contact with a tube positioned thereon. The tube is not shown in Figure 1 but it will be appreciated that the tube can be moved into position initially by sliding the tube from a position adjacent the stub rollers onto one of the stub rollers until it can be aligned with the axis of the stub rollers following which it can be moved axially in the opposed direction to engage onto the other of the stub rollers. The expansion of the stub roller 373 to engage the inner surface of the tube thus acts to hold the tube in position to prevent its axial movement whlle further rotation of the hand crank 376 causes rota-tion of the tube to wind up the sheet material fed there-to.
In operation, therefore, the chosen sheet material is withdrawn manually to a position engaging the tube on the stub rollers and is attached thereto by for example adhesive tape. The measuring roller is then dropped into engagement with the material and the hand crank 376 actuated to roll the material onto the tube 1304~34 until the counter 370 has reached the required length of material measured. The knife 351 is then actuated by rotation of the hand crank 349 which is conveniently located adjacent the hand crank 376 to move the blade from one end of the frame to the other to sever the mate-rial. The wound material and supporting tube can then be removed from the stub-rollers for sale or delivery.
In an alternative arrangement (not shown) for use with carpet rolls, the simple elongate rod or pin which can support the interior of a roll of vinyl floor covering is replace by a cradle which supports the exter-ior of the heavier carpet. The cradle includes a frame having two pins at opposed ends for engaging the links as previously described. The cradle includes for example three sets of rollers at spaced positions therealong.
Each set has two upper rollers at the front and rear of the cradle and two lower guide rollers so that a belt can pass over the rollers in a loop defining an inner run supporting an exterior of the carpet roll.
Turning now to Figures 9, 10 and 11, a roll-up core is shown which can be mounted upon the stub rollers of the wind-up station as a removable and re-usable core which will generally be used in place of the availablP
card board cores when the length of material taken is 4-~3~
insufficient to warrant the use of a card board core.
The roll-up core comprises a tubular sleeve 40 defining a cylindrical body having a peripheral surface upon which the flooring material is to be rolled. The sleeve has open ends so it can be slipped onto the stub shafts as previously described.
On the outer face of the sleeve is mounted a pivot shaft 41 carried in suitable bushings 42 for pivotal movement about an axis longitudinal of the sleeve and at the peripheral surface of the sleeve. On one side of the pivot shaft is mounted a plate 44 which is arranged for grasping an edge 45 of the sheet material at the winding station. The plate 44 extends along the sleeve and is of narrow width merely sufficient to grasp the edge 45 and hold it in position as the sleeve commences in rotation so as to pull the material onto the roll in a winding action.
On an opposed side of the shaft 41 relative to the plate 44 is provided a support wire 46 which extends outwardly from the shaft and then along the shaft at a spacing from the shaft greater than the width of the plate 44.
The angle and positioning of the support wire and the clamping plate are shown in Figures 10 and 11 and it will be noted that they are movable about the pivot shaft 41 into two different positions as shown in Figures 10 and 11 respectively. Specifically in Figure 10 the wire 46 lies flat against the peripheral surface of the sleeve and the plate 44 is thus raised away from the peripheral surface into a release position. In Figure 11 the wire 46 is raised by a manual grasping of the wire to lift it away from the peripheral surface which acts to pivot the plate 44 into a clamping position to grasp the end 45 of the material. In Figure 11, the sleeve 40 has been rotated through one revolution to wind up one turn of the material onto the sleeve. It will be noted thus that the material is obliged to pass over the support wire 46 so as to increase the diameter of the material wrapped around the roll.
The latching mechanism provided by the support wire and the plate 44 are freely pivotable on the shaft 41 but can be locked into the position shown in Figure 11 that is the grasping position by the cooperation of a slide member 47 and a leg 48 depending downwardly from the wire 46. In the position shown in Figure 10, the leg 48 projects into an opening 49 in the surface of the sleeve. In the position shown in Figure 11, the leg is prevented from entering the opening 49 by the slide ~(3 4~Y34 member 47 which can be moved longitudinally of the sleeve by a manually graspable handle 50 so as to move it from a latching position to a release position.
In operation of the device, the sleeve as shown in Figure 11 is rotated until the measured length of the material is wrapped in spiral turns on the sleeve 40.
The handle 50 is then actuated to release the latching member from its position shown in Figure 11 so that it can collapse into the position shown in Figure 10 which is as will be apparent of reduced diameter relative to the inside turn of the material wrapped on the sleeve.
The sleeve and latching mechanism are therefore free to be pulled from the interior of the formed roll. In practice, before the sleeve is removed from the roll, the sleeve and the roll are dropped from the stub rollers onto a cradle 51 formed by a pair of brackets extending outwardly from the front of the frame at a position beneath the winding station. The roll is thus supported upon the brackets 51 and the sleeve can be pulled manual-ly from the end of the roll by grasping a loop type handle 52 arranged on one end of the sleeve. In Figure 9 is shown only one-half of the wind-up core and the second latching member can be provided on the core in the other half operable from the opposed end of the core.
~3U~34 In an alternative arrangement of the drive mechanism shown ln Figure 1, the drive to the main drive wheels 20 and 22 is provided by a shaft extending along the full length of the frame with the shaft carrying at each end a length of chain welded around the shaft so as to cooperate with the sprocket teeth of the main drive wheel 20 and 22 respectively. The shaft is then driven directly by a motor.
Since various modifications can be made in my invention as hereinabove described, and many apparently widely different embodiments of same made within the spirit and scope of the claims without departing from such spirit and scope, it is intended that all matter contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
Claims
CLAIMS:
(1) A rack device for storing and dispensing rolled sheet material comprising a frame structure having ground engaging means such that the frame structure can stand on the ground defining an upper portion and a lower portion, two elongate flexible members each arranged adjacent a respective end of the frame structure, a first and second pair of wheels each pair arranged to engage and support a respective one of said flexible members such that it forms an endless loop with the pairs defin-ing two upper wheels rotatable about a common upper axis and two lower wheels rotatable about a common lower axis, means for driving said flexible members such that they rotate synchronously about said upper and lower axes, each of said members carrying a plurality of support means thereon for rotation therewith, with the support means of one aligned with the support means of the other, said aligned support means being arranged to releasibly support an elongate member extending thereacross for receiving thereon a roll of said sheet material such that the rolls can be supported on the members in parallel spaced relation for rotation therewith and presentation of each in turn at a station forwardly of the frame structure, means mounted at said station for winding up a length of said sheet material drawn from that roll pre-sented at that time at said station, and a cylindrical body for receiving said length of said material to be wound thereon, said cylindrical body having on an outer-peripheral surface thereof an elongate latch member mounted for pivotal movement about an axis longitudinal of the peripheral surface, said latch member having a latch portion extending outwardly to one side of said axis and movable between a grasping position in which it engages and grasps an edge of said material lying against said peripheral surface and a release position in which the latch portion is spaced from the peripheral surface to release the edge of the material, and a lift portion extending outwardly from said axis to a side opposed to said latch portion and arranged such that when said latch portion is in said grasping position said lift portion is raised relative to said peripheral surface and arranged so as to support the length of material away from the peripheral surface as it is rolled, and when said latch portion is in said raised position said lift portion lies flat against the peripheral surface so that the length of material is no longer supported away from the peripheral surface and the cylindrical body can be pulled longitud-inally out of the rolled material, and means for locking said latch portion in said grasping position.
(2) The invention according to Claim 1 where-in said latch portion comprises an elongate plate member arranged to pinch said edge between the plate member and said peripheral surface, wherein said lift portion com-prises an elongate wire extending longitudinally of the peripheral surface and connected to said plate member at positions spaced along the length of the wire.
(3) The invention according to Claim 2 where-in said frame includes a cradle arranged beneath said station for receiving said roll of material and said cylindrical body when released from the station such that the cylindrical body can be pulled longitudinally from the roll while the roll is supported in the cradle.
(1) A rack device for storing and dispensing rolled sheet material comprising a frame structure having ground engaging means such that the frame structure can stand on the ground defining an upper portion and a lower portion, two elongate flexible members each arranged adjacent a respective end of the frame structure, a first and second pair of wheels each pair arranged to engage and support a respective one of said flexible members such that it forms an endless loop with the pairs defin-ing two upper wheels rotatable about a common upper axis and two lower wheels rotatable about a common lower axis, means for driving said flexible members such that they rotate synchronously about said upper and lower axes, each of said members carrying a plurality of support means thereon for rotation therewith, with the support means of one aligned with the support means of the other, said aligned support means being arranged to releasibly support an elongate member extending thereacross for receiving thereon a roll of said sheet material such that the rolls can be supported on the members in parallel spaced relation for rotation therewith and presentation of each in turn at a station forwardly of the frame structure, means mounted at said station for winding up a length of said sheet material drawn from that roll pre-sented at that time at said station, and a cylindrical body for receiving said length of said material to be wound thereon, said cylindrical body having on an outer-peripheral surface thereof an elongate latch member mounted for pivotal movement about an axis longitudinal of the peripheral surface, said latch member having a latch portion extending outwardly to one side of said axis and movable between a grasping position in which it engages and grasps an edge of said material lying against said peripheral surface and a release position in which the latch portion is spaced from the peripheral surface to release the edge of the material, and a lift portion extending outwardly from said axis to a side opposed to said latch portion and arranged such that when said latch portion is in said grasping position said lift portion is raised relative to said peripheral surface and arranged so as to support the length of material away from the peripheral surface as it is rolled, and when said latch portion is in said raised position said lift portion lies flat against the peripheral surface so that the length of material is no longer supported away from the peripheral surface and the cylindrical body can be pulled longitud-inally out of the rolled material, and means for locking said latch portion in said grasping position.
(2) The invention according to Claim 1 where-in said latch portion comprises an elongate plate member arranged to pinch said edge between the plate member and said peripheral surface, wherein said lift portion com-prises an elongate wire extending longitudinally of the peripheral surface and connected to said plate member at positions spaced along the length of the wire.
(3) The invention according to Claim 2 where-in said frame includes a cradle arranged beneath said station for receiving said roll of material and said cylindrical body when released from the station such that the cylindrical body can be pulled longitudinally from the roll while the roll is supported in the cradle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000553574A CA1304734C (en) | 1987-12-04 | 1987-12-04 | Rack for storing and dispensing rolled floor covering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000553574A CA1304734C (en) | 1987-12-04 | 1987-12-04 | Rack for storing and dispensing rolled floor covering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1304734C true CA1304734C (en) | 1992-07-07 |
Family
ID=4137004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000553574A Expired - Lifetime CA1304734C (en) | 1987-12-04 | 1987-12-04 | Rack for storing and dispensing rolled floor covering |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1304734C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7496983B2 (en) | 2004-11-08 | 2009-03-03 | Kostigian John V | Gymnasium floor covering storage and cleaning roller |
| US8099815B2 (en) | 2004-12-14 | 2012-01-24 | Galt Display Rack Co Ltd | Gymnasium floor covering storage and cleaning rack |
-
1987
- 1987-12-04 CA CA000553574A patent/CA1304734C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7496983B2 (en) | 2004-11-08 | 2009-03-03 | Kostigian John V | Gymnasium floor covering storage and cleaning roller |
| US8099815B2 (en) | 2004-12-14 | 2012-01-24 | Galt Display Rack Co Ltd | Gymnasium floor covering storage and cleaning rack |
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| Date | Code | Title | Description |
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| MKEX | Expiry |