AU596256B2

AU596256B2 - Portable dispenser for rolls of film

Info

Publication number: AU596256B2
Application number: AU83031/87A
Authority: AU
Inventors: Harrison Huang
Original assignee: Glory Formosa Co Ltd
Current assignee: Glory Formosa Co Ltd
Priority date: 1988-01-15
Filing date: 1987-12-24
Publication date: 1990-04-26
Anticipated expiration: 2007-12-24
Also published as: BE1001343A3; AU8303187A

Description

f 5,96256 COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION

(ORIGINAL)

FOR OFFICE USE Class Application Number: Lodged: S Complete Specification-Lodged: Accepted: Published: Priority: Form Int. Class Related Art: This document contains the amendments made under Section 49 and is correct for printing.

TO BE COMPLETED GLORY FORMOSA CO., LTD.

BY APPLICANT Name of Applicant: Address of Applicant: Actual Inventor: Address for Service: No. 23, Lin Tsuo Road, Shenkang, Taichung Hsien, Taiwan, Republic of China HARRISON HUANG SANDERCOCK, SMITH BEADLE 207 Riversdale Road, Box 410) Hawthorn, Victoria, 3122 Complete Specification for the invention entitled: PORTABLE DISPENSER FOR ROLLS.OF FILM The following statement is a full description of this invention, including the best method of performing it known to me:- 1A- The present invention relates to hand-held dispensers and, particularly those suited for wrapping plastics material packaging-film under tension about an object of large volume.

Heretofore, it has been common practice to use stretchable plastics material film or stretch wrap to secure Ott* a plurality of containers on. a pallet. A\ well known film wrapping dispenser is shown in figure 1, and comprises a platform base 100, a handle 200 mounted on the base ano a **sliding pole 300. In using this kind of dispenser, as shown in Figure 2, a stretchable plastics material roll of film 400 is mounted on the sliding pole 300 and can be rotated.

By grasping the dispenser and moving the dispenser around 9 tc is the object, the film is thus wrapped around the object whilst also pulling away from the object, SO as to cover the object to protect it from moisture, etc.

In the above oescribed known film oispenser, the length of the sliding pole 300 is fixed, therefore, it Cris suitable only for one-size of film. Whilst some attempts have been made to improve hand-held dispensers, for example, in U.S. Patent No. 4102,513, such have not been entirely satisfactory from the standpoint of uniformity of wrap, tension adjustment, simplicity, durability, balance or ease of manipulation for various types of objects.

It is an object of this invention to provide a simple, durable ano easy to use oispensar for Stretchable filmt wrapping operations and the like.

According to the present invention there is provioeo a portable dispenser for rolls of film, particularly suited i 2 1 2 3 4 6 7 8 9 11 12 144 13 I C t 14 4 t t r 15 t t 1 C fC L 16 17 18 19 27 28 for use in wrapping plastics material packaging film under tension about an object of large volume, comprising: a rigid base piovided with an upwardly facing support surface for a roll of film; a handle located on the base; a first tube secured at said support surface; the upper end of the said first tube being inclined relative to its axis; a pressure member with an inclined surface at its lower end to match with the inclined face at the upper end of the first tube and having a recess in its upper surface and from which recess a passage extends; a tension rod which is threaded at its lower end and has a head engageable against rotation in the recess formed in the upper surface of the pressure member and which is locatable to extend through the passage and the first tube out of the bottom of the base; and an adjusting member normally screwed onto the lower end of the tension rod; a slidable second tube of a diameter to receive the first tube within its interior together with the pressure member, and having a nut or threaded collar at its upper end; a first threaded coupling member adapted to be screwed into the threaded collar or nut at the upper end of the second, slidable tube; a second, flanged coupling member engageable with said first threaded coupling member; and biassing means above the second coupling member; whereby upon rotation of the adjusting member beneath the base, the pressure member and the first tube may be loosened to permit the second tube to be slid freely along the first tube to permit adjustment of 900207,!psspe.014,glory.res, i -2a 1 the distance between the base and the f lange of the second 2 coupling member.

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9 0 02O7,!psspe .014 ,glory .res, The film dispenser according to preferred embodiments of the present invention is characterised by a gooo balance and permits the application of the film under substontially uniform tension across the full width of the film for a uniform wrap which also comprises another object of the invention.

Another object of the present invention is to 1 #9..provide a film dispenser in which the roll is readily *10 replaced.

is still a further object of the present invention 9 0.9,,to provide a film dispenser in which, the length of the dispenser can be easily adjusted, therefore, the tension on the film can be adjusted suitably for practical use.

A\ more complete understanding of these and othezr 1~ features and advantages of the present invention will become apparent from a careful consideration of the following detailed description of certain embodiments illustrated, by way of example, in the accompanying drawings, in which: 0, Fig. 1 is a perspective view illustrating a fully assembled, preferred example of a known dispenser; Fig. 2 is a perspective illustration of the filmn dispenser of Fig, 1 in use; Fig. 3 is a perspective view illustrating a fully assembled embodiment of a dispenser according to the invention.

Fig. 4 is a longitudinal cross-#sectional view of tbo dispenser of Fig. 3; and I-~.~;-rr~arrmmrwrrrr -4 Fig. 5 is an exploded perspective view showing the components of the film dispenser according to the invention.

Referring to Figs. 3, 4 and 5, there is shown a stretchfilm dispenser having a platform-shaped, rigid base 1 which, as shown, has one end portion wider than the other and becomes gradually smaller in width towaro the narrower end portion with the ends of the base 1 being rounoeo ano semi-circular in shape. The base 1 is formed by a top plate S* 10 15 and a bottom plate 16, wherein, .the outer edge of the bottom plate 16 is formeo as a mounting groove 160 and the *at* lower edge 150 of the surrounding surface of the top plate 15 then is bent over and upward thus enabling the top plate 15 and the bottom plate 16 to be firmly mounted together.

t On the top plate 15, at each of the ends there is a hole or opening 151, 152. A screw threaded seat 17, 18 is S, then located in each of the holes 151, 152 respectively.

The buttom plate 16, at its wider end is upwardly concaved at 161 and where there is provided an opening 162 oppositely 20 juxtaposed to the hole 151 on the top plate 15. A pipe- Sshaped or;tubular handle 11 is screwed into the screw seat S17 at the narrower end of the base 1. The bottom surface e of the handle 11 is threaded at 111 and on the handle 11, there is also an internally threaded nut 171 to hold the handle 11 secured on the base 1. The top plate 15 at the wider end of the base 1 is formed with an upiardly facing film support portion 12. On the film roll support portion 12 an adjusting apparatus is provided which incluoes a first, round pipe or tube 2 secured onto film roll support portion 12, the surface of the lower end of the first, round tube 2 is threaded to permit the tube 2 to be screwed, together with threaded seat 10 and secured by internally screw-threaded nut 181. The upper end of the tube 2 is formed as a slope or slant 21 to match with a pressure post or member 3 provided with a co-operating slope at

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I- I I I I .1_ its lower end. On the upper surface of the pressure (flembL'r 3, there is a non-round hollow or recess 31 which has a passage 30 extending from the base thereof. A pillar or rod 33 threaded on its lower surface and provided with a head of the same shape as the cross-section of the above-mentioned recess 31 then extends through the passage and the tube 2, and extends to concave or recess 161 formed on the bottom plate 16 of the base 1 and an adjustt ing bolt 34 is then screwed onto the lower end of the roo 33. Exteriorly of the tube 2 and the pressure member 31, a slidable pipe or tube 4 is provided having a a diarneV:er Ott* larger than that of the tube 2 and the pressure member 3.

Inside the upper end of the slidable tube 4 is a nut 41.

A threaded coupling member 5 with the threads on its reduced diameter lower end is screwed into the nut 41. At the lower end of the threaded member 5, a pin 51 is provioeo Cto extend therethrough. At the upper end of' the coupling member 5 is a pair of short cylindrical portions 52, 53, wherein, the upper cylindrical portion 53 is insertable t 20 into a support tube 54, the support tube 54 is then CCinserted into hano grip 50. Beneath the hano'grip is a pair of mounting casings or collars 61, 62 with their openings opposite and facing each other. The upper collar 631 is welded onto the support pipe 54. Between the bottoms of the mounting casings 61, 62 there is provioed a spring 6. On the short cylindrical portion 52 of the first coup~.ing member 5, there is a wheel or flanged second coupling member 8. The member 6 is generally flat with its centre portion being concaved downwardly for gripping or abutting the film roll when located over the tube 4 on* the base. At the centre of the coupling member 8 is a shaft hole 80 and between the shaft hole and the outer edge of the member 2, there is Llso a long opening or passage 61 having a width larger than the diameter of the first coupling member S.

-ii -6- I- 4 44 44 ftt 6 46 I o 4 fr 4e 4r 4 4: 4 Co4~ As shown in Fig. 3, in using the dispenser of the invention, the member B is moved downward and permitted to first separate from the member 5 by radial movement to permit portion of member 5 to pass through passage 81.

The adjusting bolt 34 on the bottom plate 16 of the base 1 is then rotated. The pressure member 3 may thus be loosened together with the first tubular member 2, thus enabling the slidable member 4 to be pulled by the user to the required length. At this time, the adjusting 10 bolt 34 is again rotated but to tighten this time. The rod 33 will pull the pressure member 3 to slightly oistort the tube 2, and the pressure member 3 will press against the inner wall of the slidable tube 4 to engage and secure said tube 4. Then, the hollow stretch-film roll can be located onto the dispenser. After the roll has been located on tube 4 and with one end engaging the base 1, the flanged coupling member B is then put onto the screw member 5 again. Because the collar 62 is pushed downward to the coupling member 3 by the spring 6, the flanged coupling member 8 then will press the upper eno of the roll 15. Upon rotatiop of the hand grip 50, the tension of the upper end of the stretch film wail by the bottom of the flanged coupling member 8 will be adjusted to the optimum condition. When the user grasps the handle 11 and the hand grip 50, and moves the dispenser around the object (for example, a plurality of containers on a pallet), (as ill.ustrated in Fig. the flangeo coupling member B will be rotated and the plastics stretch-film will be pulled off the oispenser for wrapping.

In the stretch-film dispense, mentioned above, because the slidable tube 4 is slidably adjustable into any position, the distance between the wheel B and the base 1 is adjustable to suit stretch films of different sizes.

After the plastics stretch-film roll is put onto the I: i 7 base of the dispenser, the tension force on the film roll will be adjustable by rotating the hand grip. The dispenser according to the invention is simple in structure, conveniently adjustable and suitable to many sizes of film.

Although the present invention has been described with a certain degree of particularity, it is understood that the present disclosure has been made by way of example and that changes in details of structure may be made without departing from the spirit thereof and as defineo in the subsequent claims.

The claims form part of the disclosure of this specification.

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Claims

1- 8 1 2 3 4 6 7 8 9 11 12 13 14 16 17 ti.. I 18 4 414 *b I 19 21 22 4 4 f 23 24 26 27 28 29 The claims defining the invention are as follows: i. A portable dispenser for rolls of film particularly suited for use in wrapping plastics material packaging film under tension about an object of large volume, comprising: a rigid base provided with an upwardly facing support surface for a roll of film; a handle located on the base; a first tube secured at said support surface; the upper end of the said first tube being inclined relative to its axis; a pressure member with an inclined surface at its lower end to match with the inclined face at the upper end of the first tube and having a recess in its upper surface and from which recess a passage extends; a tension rod which is threaded at its lower end and has a head engageable against rotation in the recess formed in the upper surface of the pressure member and which is locatable to extend through the passage and the first tube out of the bottom of the base; and an adjusting member normally screwed onto the lower end of the tension rod; a slidable second tube of a diameter to receive the first tube within its interior together with the pressure member, and having a nut or threaded collar at its upper end; a first threaded coupling member adapted to be screwed into the threaded collar or nut at the upper end of the second, slidable tube; a second, flanged coupling member engageable with said first threaded coupling member; and biassing means above the second coupling member; whereby upon rotation of the 90o20O;!psspe.014,glory.res, iL L -9- 1 adjusting member beneath the base, the pressure member and 2 the first tube may be loosened to permit the second tube to 3 be slid freely along the first tube to permit adjustment of 4 the distance between the base and the flange of the second coupling member. 6

2. A film dispenser as claimed in claim 1, in which 7 the recess formed in the upper surface of the pressure 8 member is not round. 9

3. A film dispenser as claimed in claim 1, in which the upper section of the first coupling member which screws 11 into the threaded collar at the upper end of the second tube 12 comprises upper and lower short cylindrical portions; S13 wherein the upper cylindrical portion is insertable into a 14 support pipe, the support pipe is then insertable into a hand grip and beneath the hand grip is a biassing means. 16

4. A film dispenser as claimed in claim 3, in which 17 biassing means having two mounting cases or collars with 18 their openings opposite and facing each other, and in which, S 19 the upper collar is welded onto the support pipe and between S 20 the bases of the mounting collars is a compression spring 21 providing said biassing means. 22

5. A film dispenser as claimed in claim 4, in which C Ce "i 1 23 the centre of the second coupling member is a shaft passage 24 and between the shaft passage and the outer edge of the flange of the coupling member there is provided a passage 26 having a width larger than the diameter of the lower 27 cylindrical portion of the first coupling member. 28

6. A film dispenser as clcimed in claim 1, in which S 029 0 the base comprises a top plate and a bottom plate, wherein .00207,!psspe.014,glory.res, ,r C 10 1 2 3 4 6 7 8 9 11 12 13 14 16 17 S 18 S 19 21 22 23 26 27 28 29 the outer edge of the bottom plate is faormed as a mounting groove, the lower edge of the surrounding surface of the top plate then is bent upwards to enable the top plate to mount firmly with the bottom plate, at each of the ends of the top plate a hole or opening is provided whilst the bottom plate, at a wider end, is concaved upwardly and whereat there is an opening opposite to the hole on the top plate.

7. A f ilm dispenser as claimed in claim 6, in which in each of the holes at the respective ends of the top plate there is a screw seat f or hol1ding the handlIe and the f irst tube respectively.

8. A film dispenser as claimed in claim 1, in which the surfaces of the lower end of the handle and of the first tube are threaded.

9. A film dispenser substantially as herein described with reference to Figs. 3 to 5 of the accompanying drawings.

10. A film dispenser particularly suited for wrapping plastic packing film under tension about an object of large volume comprising: a platform-shaped rigid base having a wider end portion that becomes gradually smaller in width towards a narrower end portion with the end thereof being rounded and semicircular in shape, the top surface at the wider end portion of the base being formed with an upward film support; a handle located onto the upper surface of the narrower end portion of the base; a round pipe fixed onto the film support, the upper end of the round pipe being formed with a slope; 00 O 2 O7,!psspe.014,glory.res, i bw 11 1 a pressing post with a slope at its lower end to match 2 with the slope on the upper end of the round pipe, said 3 pressing post having a recess in its upper surface and from 4 which recess a passage extends; a pillar which is threaded on its lower end and with a 6 head of the same shape as the hollow formed on the upper 7 surface of the pressing post, which is thrust thlough the 8 hole and the round pipe, finally extends out of the bottom 9 of the base and an adjusting bolt is then screwed onto the lower end of the pillar; 11 a sliding pipe envelops the round pipe and the pressing 12 post inside its upper end is a nut; rf, 13 a screw post screws into the nut at the upper end of tr .r 14 the sliding pipe; a wheel engageable with the screw post; and a set of 16 tension elements above the wheel; wherein by rotating the 17 adjusting bolt beneath the base, the pressing post and the 18 round pipe may be loosened to permit the sliding pipe be 19 slid freely along the round pipe to permit adjustment of c 't 20 between the base and the wheel. 21 S| 22 DATED THIS 7th February, 1990 23 SMITH SHELSTON BEADLE 24 Fellows Institute of Patent Attorneys of Australia. 26 Patent Attorneys for the Applicant 27 GLORY FORMOSA CO., LTD. 28 9 4 pO1 90 0 2 07,!psspe.014,glory.res, ^Lilf F ~-w