GB2078633A

GB2078633A - Carriage for cleaning attributes

Info

Publication number: GB2078633A
Application number: GB8119219A
Authority: GB
Original assignee: BRABANTIA LEASING FACTORING
Current assignee: BRABANTIA LEASING FACTORING
Priority date: 1980-06-23
Filing date: 1981-06-22
Publication date: 1982-01-13
Also published as: GB2078633B; DE3124182A1; IT8167861A0; NL8101016A; FR2484944A1; CH650981A5; FR2484944B1; IT1145160B; DE3124182C2; DE8117968U1

Abstract

A carriage (1) for cleaning attributes comprises a mobile underframe (2), a carrier (3) for a roll (4) of web-like material, and an upper brace (5) connected to the underframe and having an end part (7) provided with a carrier (8) for suspending a refuse bag (9) with its upper side open; according to the invention clamping means (13) are provided for clampingly suspending the upper open side of the refuse bag. The underframe is foldable. Means may be provided for allowing the free unrolling of only a predetermined length of the web from the roll each time web-like material is taken from the roll. <IMAGE>

Description

SPECIFICATION Carriage for cleaning attributes This invention relates to a carriage for cleaning attributes, in particular of the type comprising a mobile underframe, a carrier for a roll of web-like material and an upper brace connected to the underframe and having an end part provided with a carrier for suspending a refuse bag with its upper side open.

Such a carriage, for example, is used in cleaning operations in buildings, wherein as needed a piece of web-like material is torn off from a roll, which piece can be used as a disposable cleaning-rag and can be disposed in the refuse bag after use. The known carriage of this type has the disadvantage that the upper side of the refuse bag is suspended loosely on the carrier so that the refuse bag may slide off from the carrier by gravity.

The invention aims to provide a carrier of the above-mentioned type, wherein this disadvantage is obviated in an effective but nevertheless simple manner.

According to the invention there is provided a carriage for cleaning attributes, comprising a mobile underframe, a carrier for a roll of web-like material, and an upper brace connected to the underframe and having an end part provided with a carrier for suspending a refuse bag with its upper side open, and clamping means for clampingly suspending the open upper side of the refuse bag.

Thus the carriage according to the invention has clamping means for clampingly suspending the open upper side of the refuse bag. In this manner the refuse bag can no longer unintendedly slide off the carrier.

Preferably, the refuse bag carrier comprises a substantially rectangular wire frame fixed in a substantially horizontal position at both sides to the end part of the upper brace, wherein the clamping means include two U-shaped clamping brackets, the legs of which at their ends are pivotally connected to the end part of the upper brace in such a manner that each of the U-shaped clamping brackets rests with its body on one of two opposite sides of the wire frame. By folding the upper side of the refuse bag around the clamping brackets and then by guiding of the upper side of the refuse bag through between the clamping brackets and the underlying sides of the wire frame, the refuse bag will automatically clamp itself between the clamping brackets and the underlying sides of the wire frame.

As with the known carriage, the underframe of the carriage according to the invention preferably comprises a first support having two legs, and second and third supports each including an acute angle with the respective legs of the first support, while at least the second and third supports each have a wheel at their lower ends; in the carriage according to the invention the underframe is preferably foldable from a working position to a rest position in which the legs of the first support and the second and third supports, respectively, extend substantially parallel, and is unfoldable to the working position.

In this manner the carriage occupies only little space in the dismounted and folded state, so that the carriage can be easily transported or can be put away in a cupboard.

According to a preferred embodiment of the invention means are provided for allowing the free unrolling of only a predetermined length of the web from the roll each time web-like material is taken from the roll. In this manner it is prevented that when material is taken from the roll, unnecessary long pieces are unrolled, so that the material consumption is somewhat reduced.

According to a simple embodiment such means comprise a rotatable mounted material roll, the web being led around part of the material roll in a slipfree manner, so that the material roll rotates when web-like material is taken off, wherein the metering roll has a blocking device for blocking the metering roll after each revolution.

The invention will be further described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of one embodiment of a carriage according to the invention, the refuse bag being schematically shown; Figure 2 is a detail of Figure 1 showing a connection block; Figure 3 is a perspectively shown detail of the end part of the upper brace of the carriage according to Figure 1; Figure 4 is a view according to line IV--IV in Figure 3 and showing schematically the applying of the refuse bag; Figure 5 is a view corresponding to Figure 4 wherein the refuse bag is shown schematically; Figure 6 is a longitudinal cross-section of a connection block of the carriage according to Figure 1; Figure 7 is a bottom view of the connection block of Figure 6;; Figure 8 is a perspective view of another embodiment of a carriage according to the invention; and Figure 9 is a detail of the carriage according to Figure 8 on a larger scale.

Figure 1 shows a carriage 1 for cleaning attributes comprising a mobile underframe 2, a carriage 3 and a roll 4 of web-like material and an upper brace 5 detachably connected to the underframe 2 and being made of metallic tubing for example. The upper brace 5 includes two legs 6 bent over an angle of about 450 at two places.

so that an end part 7 of the upper brace 5 extends substantially horizontally in the working position.

The end part 7 of the upper brace 5 is provided with a carriage 8 for suspending a refuse bag 9 with its upper side open, the refuse bag 9 being schematically shown in Figure 1.

The carriage 8 comprises a substantially rectangular wire frame 10 made of metal wire for example, which wire frame 10 is fixed in a substantially horizontal position at both sides to the end part of the upper brace 5 by means of mounting hooks 11. To this end, two bores 12 extending diametrically through the tube are provided in the end part 7, the mounting hooks 11 engaging in these bores 12. The end part 7 is further provided with clamping means 13 cooperating with the carrier 8 for clamping the open upper side of the refuse bag, thereby preventing the refuse bag 9 from sliding off from the carrier 8 by gravity.

As shown in Figures 3, 4 and 5, the clamping means 1 3 consist of two U-shaped clamping brackets 14, the legs 1 5 of which at their ends are pivotally connected to the end part 7 in such a manner that the U-shaped clamping brackets 14 rest with their body 16 on one of the two opposite sides 17 of the wire frame 10. The length of the body 16 of the clamping brackets 14 corresponds to the length of the underlying sides 17 of the wire frame 10. The pivot connection of the clamping brackets 14 with the end part 7 is obtained by boring holes 18 at both sides of the connections of the wire frame 10 with the end part 7, in which holes 1 8 the bent ends of the legs 1 5 of the clamping brackets 14 are inserted.

The refuse bag 9 is suspended by folding the upper side around the clamping brackets 14, as shown in Figure 4, whereafter the upper side of the refuse bag 9 is guided through between the clamping brackets 14 and the sides 1 7 of the wire frame so that the position of Figure 5 is obtained.

In this manner, the upper side of the refuse bag 9 is automatically clamped between the clamping brackets 14 and the wire frame 10.

As shown in Figure 1 , the underframe 2 comprises a U-shaped front support 19 with two legs 20, and two back supports 21 each provided with a wheel 22 at their lower ends, which wheels 22 may be made of synthetic material. In the described embodiment the front support 19 and the back supports 21 are made of metailic tubing.

The wheels 22 are rotatably mounted on a shaft 23 which also connects the back supports 21 with each other. The back supports 21 are further connected with each other by a transverse rod 24.

The underframe 2 is foldable from the working position shown in Figure 1, in which the legs 20 of the front support 1 9 include an acute angle with the respective back supports 21 to a rest position in which the legs 20 and the back supports 21 are substantially parallel, and is unfoldable from this rest position back to the working position again.

The rest position of the legs 20 and the back supports 21 is shown schematically in Figure 2 by dot-and-dash lines. In this manner, the carriage 1 occupies relatively little space in the dismounted and folded state so that the carriage can be easily put away in a cupboard or transported.

The respective upper end of the front support legs 20 and the upper ends of the back supports 21 are pivotally mounted in connection blocks 25.

The connection blocks 25, one of which is shown in cross-section in Figure 6, are each provided with arresting locating nests 26, 27 for a front support leg 20 and a back support 21, in which the leg 20 and the back support 21 are arrestable in the working and rest position, respectively. To this end, an elongate chamber 28 open at the bottom side is formed in each of the connection blocks 25 made of an elastic synthetic material, for example. The long side walls 29 of the chamber 28 are provided with inwardly projecting detents 30 (see Figure 7). These detents 30 determine the arresting locating nests 26, 27 together with the - outwardly sloping short side walls 31. For reinforcement the long side walls 29 of the chamber 28 are connected with each other at their mid-portion by a cross wall 32.

For detachably connecting the upper brace 5 to the underframe 2 an opening 34 corresponding to the legs 6 of the upper brace 5 is formed in the upper part 33 of each connection block 25, in which openings 34 the legs 6 can be fittingly received. Further, at least one recess 35 is formed in the upper part 33 of each connection block 25 for rotatably supporting the roll carrier 3.

According to the embodiment shown a recess 35 is formed at both sides of the opening 34, whereby both connection blocks 25 are similar and the upper brace 5 can be mounted in two positions on the underframe 2.

In the embodiment shown in Figure 1 the upper brace 5 carries a U-shaped tear off bracket 36, the legs 37 of which are pivotally connected to the upper brace 5 by inserting the bent ends of these legs 37 into holes which are formed in the upper brace 5. On the body 38 of the tear off bracket 36 is fixed a guiding bracket 39 defining an opening 40 with the body 38, through which opening 40 the web-like material of the roll 4 should be guided. During the use of the carriage 1 a piece of the web-like material of the roll 4 can be unrolled and torn off, which piece can be used as disposable cleaning-rag or the like and can be disposed in the refuse bag 9 after use.

Because the roll 4 can freely rotate, a piece of the web of any length can be unrolled each time web-like material is taken from the roll 4. Thereby, the material consumption can be unnecessarily high due to careless use. In Figure 8 a carriage is shown which is constructed in such a manner that, each time web-like material is taken from the roll 4, the free unrolling of only a predetermined length of the web 42 is allowed. The web 41 is shown by a broken line in Figure 9.

To this end, the carriage 41 has a metering roll 44 rotatably journalled in a support bracket 43, the web 42 being led around part of the metering roll 44. The surface 45 of the metering roll 44 has two rough portions 46 so that the web 42 cannot slip with respect to the metering roll 44.

Therefore, the metering roll 44 will rotate when web-like material is taken off, and the metering roll 44 is blocked by a blocking device 47 after each revolution. Thereby, only a length of the web 42 determined by the diameter of the metering roll 44 can be freely unrolled, each time web-like material is taken from the roll 4. After tearing off the unrolled piece of web-like material the blocking can be simply released, whereafter a new piece can be unrolled again. Of course, the blocking can also be released before the unrolled piece of material is torn off so that a longer piece of material can be taken off, if required.

The support bracket 43 is pivotally connected to the upper brace 5 with its legs 48 so that the metering roll 44 rests on the roll 4. The legs 48 of the support bracket 43 are bent upwardly at an acute angle at a distance from the connection point thereof to the upper brace 5. A return roll 50 for the web 42 is rotatably attached to the upwardly extending parts 49 of the legs 48 just above the metering roll 44, by which return roll 50 the web 42 is guided to a freely protruding tear off plate 51. The tear off plate 51 is fixed to the support bracket 43 at the height of the return roll 50 by means of two connection rods 52.

The connection rods 52 form part of a wire frame 53, a part 54 of which forms the shaft of the return roll 50. The part 55 opposite this part 54 lies below the tear off plate 51 and has a V-shape as shown schematically. The web 42 is supported by this part 55. Of course, the web 42 can be led over the tear off plate 51 so that the web 42 is supported by the tear off plate 51 itself.

Just above the fixing point of the connection rods 52 the legs 48 of the support bracket 43 are bent at such an angle that parts 57 joined to the body 56 of the support bracket 43 are obtained, which parts 57 are substantially parallel to the connection rods 52 and to the parts of the support bracket legs 48 connected to the upper brace 5.

The body 56 of the support bracket slightly protrudes with respect to the tear off plate 51, so that the user, by gripping the end of the tube 42, can easily lift the support bracket 43 for releasing the blocking of the metering roll 44.

As can be seen clearly in Figure 9, the blocking device 47 consists of cams 58 formed at the ends of the metering roll 44 and cooperating with the part 54 of the wire frame 53. On taking material from the roll 4, the cams 58 abut the part 54 acting as a stop after one revolution of the metering roll 44. As the web 44 cannot slip with respect to the metering roll 44 no material can be unrolled any more, unless the blocking is released.

For releasing this blocking the metering roll 44 is movable up and down with respect to the support bracket 43, because the metering roll 44 is slidable in a slot 60 with a shaft stub 59 on either side. By lifting the support bracket 43 the cams 58 can pass the part 54 so that the metering roll 44 can make a revolution again and a length of the web 42 determined by the diameter of the metering roll 44 can be torn off.

It is noted that the upper brace 5 of the carriages 1 and 41 shown in Figures 1 and 8, respectively, can be mounted in a position rotated over 1 boy with respect to the position of the upper brace 5 shown so that the refuse bag 9 will be above the front support 1 9 instead of above the wheels 22.

Further, it is noted that the web-like material of the roll 4 can for example be a cellulose paper or such a material suitable for cleaning purposes. If required, perforations can be made in the web 42 at distances corresponding to the circumference of the metering roll 44, whereby the tearing off is facilitated.

Claims

1. A carriage for cleaning attributes, comprising a mobile underframe, a carrier for a roll of web-like material, and an upper brace connected to the underframe and having an end part provided with a carrier for suspending a refuse bag with its upper side open, and clamping means for clampingly suspending the open upper side of the refuse bag.

2. A carriage as claimed in claim 1, wherein the clamping means cooperate with the refuse bag carrier.

3. A carriage as claimed in claim 2, wherein the refuse bag carrier comprises a substantially rectangular wire frame fixed in a substantially horizontal position at both sides to the end part of the upper brace, and wherein the clamping means include two U-shaped clamping brackets, the legs of which at their ends are pivotally connected to the end part of the upper brace in such a manner that each of the U-shaped clamping brackets rests with its body on one of two opposite sides of the wire frame.

4. A carriage as claimed in claim 3, wherein the U-shaped clamping brackets are pivotally connected to the end part of the upper brace adjacent the connections of the wire frame to the said end part.

5. A carriage as claimed in claim 3 or 4, wherein the length of the body of the U-shaped clamping brackets is substantially equal to the length of the underlying sides of the wire frame.

6. A carriage as claimed in any of claims 1 to 5, wherein the underframe comprises a first support having two legs, and second and third supports each including an acute angle with the respective legs of the first support, at least the second and third supports each having a wheel at their lower ends, and wherein the underframe is foldable from a working position to a rest position in which the legs of the first support and the second and third supports, respectively, extend substantially parallel, and is unfoldable to the working position.

7. A carriage as claimed in any of claims 1 to 6, wherein the upper brace is detachably connected to the underframe.

8. A carriage as claimed in claim 6, wherein the upper ends of the legs of the first support and the respective upper ends of the second and third supports are pivotally connected in connection blocks, and wherein each connection block has arresting locating nests for a leg of the first support and a second or third support, respectively, in which the leg and the second or third support can be arrested in the working position and in the rest position, respectively.

9. A carriage as claimed in claim 8, wherein an elongate chamber open at the lower side is formed in each of the two connection blocks, the long side walls of the said chamber having inwardly projecting detents which together with short, outwardly sloping, chamber side walls determine the arresting locating nests.

10. A carriage as claimed in claim 9, wherein the long chamber side walls at their mid-portions are connected with each other by a cross wall.

11. A carriage as claimed in any of claims 8 to 10, wherein both connection blocks are made from an elastic synthetic material.

12. A carriage as claimed in any of claims 8 to 11, wherein an opening corresponding to the legs of the upper brace is formed in the upper part of both connection blocks, in which openings the legs of the upper brace can be fittingly received.

13. A carriage as claimed in any of claims 8 to 12, wherein at least one recess for rotatably mounting to an end of the roll carrier is formed in the upper part of both connection blocks.

14. A carriage as claimed in any of claims 1 to 13, further comprising means for allowing the free unrolling of only a predetermined length of the web from the roll each time web-like material is taken from the roll.

1 5. A carriage as claimed in claim 14, wherein the said means comprise a rotatably mounted metering roll, the web being led around part of the metering roll in a slipfree manner, so that the metering roll rotates when web-like material is taken off, and wherein the metering roll has a blocking device for blocking the metering roll after each revolution.

1 6. A carriage as claimed in claim 15, wherein the metering roll is rotatably mounted in a support bracket, the legs of which are pivotally connected to the upper brace in such a manner that the metering roll rests on the roll of web-like material.

wherein the legs of the support bracket are bent upwardly at an acute angle at a distance from the connection to the upper brace, and a rotatable return roll for the web led around the metering roll is mounted on the upwardly extending part of the support bracket legs above the metering roll, and a tear off device for the web is fixed to the support bracket at the height of the return roll.

1 7. A carriage as claimed in claim 16, wherein the blocking device includes at least one cam formed at an end of the metering roll and cooperating with a stop formed on the support bracket, wherein the metering roll is movable up and down with respect to the support bracket a certain distance in such a manner that the blocking of the metering roll is released in the lower position of the metering roll.

1 8. A carriage as claimed in claim 17, wherein the tear off device is a tear off plate fixed to the support bracket by connection rods extending substantially parallel to the support bracket leg parts connected to the upper brace.

19. A carriage as claimed in claim 18, wherein the legs of the support bracket are bent at a small distance from the fixing point of the tear off device at such an angle that the leg parts joined to the body of the support bracket extend substantially parallel to the connection rods of the tear off device, and wherein the body of the support bracket protrudes with respect to the tear off plate.

20. A carriage as claimed in any of claims 1 5 to 19, wherein the surface of the metering roll is at least partially rough.

21. A carriage according to claim 1, substantially as herein described with reference to, and as shown in, Figures 1 to 7, or Figure 8 and 9 of the accompanying drawings.