JPS6133573B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dispensing device for dispensing a web of paper towels from a supply roll, and more particularly to a cutting device for cutting the dispensed portion of the web from the supply roll at the end of a dispensing operation.

A representative prior art paper towel dispenser is described in U.S. Pat. No. 3,408,125. With this dispenser, the user grasps the protruding edge of the towel web and manually pulls it to unwind the length of the towel from the supply roll. After a predetermined length of web has been dispensed, the user cuts the dispensed web from the supply roll by pulling the web upwardly toward the serrated cutting edge. After cutting, a time stop device activates the internal feeder to advance the web briefly out of the dispenser for grasping by the user for the next dispensing operation.

Manual tear-type cutting often results in the dispensed web being cut to irregular or partial lengths, and the user often attempts to cut the web prematurely before dispensing the predetermined length. , which is inappropriate because it does not activate the internal supply device. Therefore, there is no protruding tip for the next user to grasp.

Dispensers of the type described in U.S. Pat. Nos. 3,739,965 and 1,449,062 alleviate this difficulty somewhat. In both of these devices, the web is dispensed between two rollers, one of which carries a radially extending knife and the other provided with a radial groove for receiving the knife, so that the web is dispensed between two rollers each rotation of the roller. The web is cut. However, with this cutting device, the knife tends to wedge into the groove rather than cutting cleanly through the paper web, thereby securing the device.

Other gravity- or spring-actuated cutting devices are disclosed in U.S. Pat.
Described in No. 345052. However, in each of these three cutting devices, the movable cutting blade must be oriented upwards, ie, the blade is moving during the dispensing operation. In particular, one side of the blade is in an upward position from the starting position,
It must then move in two directions, from the starting position to the cutting position in the opposite direction. The distance the blade has to move and the space required to accommodate the blade movement are therefore unnecessarily large.

The aim of the invention is to obtain a unique cutting device for a paper towel dispenser that is economical in construction and eliminates the disadvantages of the prior art.

Therefore, the present invention provides a cutting device for use in a dispenser for dispensing a web of paper towels from a supply roll, the cutting device having a feed roller that can rotate during web dispensing, the cutting device a cutting member mountable on the dispenser for movement between a normal rest position and a cutting position for cutting between the dispensing portion and the supply roll; and a cutting member for movement between the rest position and the cutting position. a drive device adapted to be coupled to the roller and the cutting member, and a latch device mountable on the dispenser for typically cooperating with the drive device to hold the cutting member in its rest position; the latch device and the drive device cooperate to provide a predetermined angle during web dispensing for actuating the drive device to move the cutting member between a rest position and a cutting position. It is characterized by a reaction that causes the roller to rotate.

According to the invention, the cutting member is kept stationary during web dispensing and is driven to cut the web only after the web has stopped moving. The drive device includes an energy storage device that stores and stores energy during web dispensing operations and releases this energy to drive the cutting member after web motion has ceased. According to the present invention,
The cutting member is separate from the feed roller and automatically cuts the dispensed web without any additional force exerted by the user. In a preferred embodiment, a cam and latching system is provided to control the retraction and retraction of the coil spring that drives the cuttable member.

The invention, together with its structure, method of operation, and further features and advantages thereof, will be understood from the following description with reference to the accompanying drawings.

Referring to FIGS. 1-3, a paper towel dispenser 20 is illustrated having a housing having a main frame 21 preferably formed of sheet metal. The frame 21 has a vertical square rear wall 22 which has short side flanges 23, 2 extending forwardly along its side edges.
4 and is integral with a generally square bottom wall 25 extending forwardly along its bottom edge. bottom wall 25
has a vertical short side flange 2 along its side edge.
It is one with 6 and 27. Cut from the rear wall 22 near its upper end and extending forwardly are a plurality of mounting tabs 28 (only one shown), the purpose of which will be described in more detail below.

A cover 30 is hinged to the frame 21 and has a generally square front plate 31 which is integral with generally triangular side plates 32 and 33 along its side edges. A bottom flange 34 is attached to the front plate 31 so as to extend rearward along the bottom edge thereof. A large square opening 35 is formed in the front plate 31 and is surrounded by an upper flange 36 extending rearwardly along its upper edge and a lower flange 37 extending rearwardly along its lower edge. Short pivot pins 38 extend laterally inwardly from the side plates 32, 33 near their lower front ends, respectively, to rotate the cover 30 onto the frame 21 between open and closed positions as shown in FIGS. 1-3. For mobile mounting, the cover 30 is adapted to be received within mating openings in the side flanges 26, 27 of the frame 21 such that the cover 30 extends rearwardly from the front edge of the bottom wall 25 to the upper edge of the rear wall 22. lean to,
It rests against appropriate stops 39 on the side flanges 23, 24 of the frame.

The generally semi-cylindrical pane 40 is integral with generally semi-circular side walls 47 at its ends, all sized to be inserted into the opening 35 to close the opening. In particular, the window pane 40 is provided with radially outwardly extending flanges 41 and 42 at its periphery, which are provided with grooves for receiving and passing through the upper and lower flanges 36 and 37, respectively, of the front panel 31, and which extend the window pane 40. Hold it in place. It will then be seen that the cover 30, in its closed position, cooperates with the frame 21 and forms a closed housing. If necessary,
A lock 43 is mounted on the upper end of the front plate 31, and the rear wall 22
The cover 30 can be locked in the closed position in conjunction with a latch flange 44 extending forwardly from the cover. A suitable opening (not shown) is preferably provided in the rear wall 22 to securely receive a cooperating fastener therethrough for mounting the dispenser 20 on a wall or other supporting surface. It is noted that when cover 30 is in its closed position, the leading edge of frame bottom wall 25 is spaced a predetermined distance from the trailing edge of cover bottom flange 34 to define dispensing opening 48.

Mounted within the dispenser 20 is a mounting bracket 50, preferably formed of an elongated metal rod, the bracket being supported on the tab 28 of the rear wall 22.
It has a rear bar portion 51 connected at both ends to a coiled corner portion 52 having forward and downwardly extending mounting arms 53 each having a hook portion 54 at its distal end. The hook portions 54 are rigidly attached to hubs 55 which in turn are received within the ends of respective elongated cylindrical roll spools 56 on which a web 58 of paper towels is wound to form a supply roll 57 and a roll 58 of paper towels. The tip or outer end is indicated at 59. The supply roll 57 is placed under the window plate 40 of the closed cover 30, so that the roll 57 is moved downward by gravity to the rear wall 22.
It is dimensioned to be adapted to press against a downwardly forwardly extending arcuate guide flange 46 which is cut out from the bottom.

Two vertical side plates 60, 61 are placed substantially parallel to each other slightly inwardly of the side flanges 26, 27, each side plate having a laterally outwardly secured attachment to the bottom wall 25 of the frame 21 by suitable means. A bottom flange 62 is provided that extends to. Short mounting tabs 64 extend laterally outward from the front edges of the side plates 60, 61, respectively. The side plates 60, 61 are provided with a coaxial line opening therethrough, and this opening is fitted with a bushing 66.
Inside the bush, both ends of an elongated main shaft 65 are rotatably mounted, and the shaft has a torsion spring 67 wound around one end and fixed to the side plate 60, as shown in FIGS. ing. Attached to the main shaft 65 for rotation therewith are two spaced apart, generally cylindrical feed rollers 70, each having a ribbed outer surface 71 formed of rubber or the like.

Between the side plates 60 and 61, near their front ends, the main shaft 65
Parallel to each other is a pivot shaft 77 on which is pivotably mounted a pair of pivot arms 76 of a generally partially cylindrical metal apron 75, with the apron extending upwardly from the pivot arms 76. It is provided with an outwardly curved lip or flange 74 at its upper end. A pair of mounting brackets 78 are integrated with the apron 75 and extend forward and outward from the apron 75, and are laterally spaced apart from each other, and both ends of a tightening roller shaft 81 are rotatably mounted on the mounting brackets 78.
A pair of clamping rollers 80 are mounted for rotation therewith, each roller fitting within a complementary opening in the apron 75. The clamping rollers 80 were each placed in alignment with the feed roller 70, and the apron 75 was rotated clockwise forward about the axis of the pivot shaft 77 from the position of FIG. 2 to the use position shown in FIG. It is configured to rotate between a threading position (not shown) and a threading position (not shown). Thus, when the apron 75 is in the use position shown in FIG. 2, the clamping roller 80 is positioned to cooperate with the supply roller 70 to clamp the towel web 58 therebetween as will be explained in more detail below.

A lever arm 8 is attached to one end of the main shaft 65 and to the outside of the side plate 60.
5 is firmly attached with screws 84 or the like, and the lever is provided with a roller 86 at its end. The roller 86 is placed in engagement with a spring plate 87 of a leaf spring 88 , the spring being attached to a support member 89 on the side plate 60 , and the other end of the leaf spring 88 being attached to the bottom wall 25 of the frame 21 .
Loading toward.

An elongated, generally rectangular fixed knife blade 90 is spanned between the lower front portions of the side plates 60, 61, and both ends thereof are respectively attached to the mounting tabs 64 with suitable fasteners 91.
The lower edge of knife blade 90 defines a beveled cutting edge 92 .

In use, a new supply roll 57 of paper towels is loaded into the dispenser 20 by opening the cover 30 and rotating the apron 75 forward into position. The leading edge 59 of the towel web 58 is then fed between the feed roller 70 and the clamping roller 80 and thus out through the forward dispensing opening 48 of the stationary knife blade 90. Apron 75 is rotated back to the position of use shown in FIG. 2, where clamping rollers 80 each cooperate with feed rollers 70 to clamp towel web 58 therebetween. When the cover 30 is reclosed, the end of the lower flange 37 firmly engages the flange 74 of the apron 75, forcing the clamping roller 80 towards the supply roller 70, ensuring clamping of the towel web 58 therebetween; To prevent the towel web 58 from slipping.

The user grasps the tip 59 of the towel web 58 protruding from the dispensing opening 48 and pulls it with his/her hand.
A predetermined length of towel web 58 is dispensed, and this dispensing movement is performed by the supply roller 70 and the main shaft 6.
5, which in turn turns the lever arm 85 in the clockwise direction as shown in FIG. 2, thereby pushing down the leaf 87 of the leaf spring 88.

Referring to FIGS. 4-11, cutting apparatus 100 is shown. The cutting device 100 has an elongated movable cutting blade 101 having raised mounting lugs 102 at both ends thereof and an inclined rearwardly extending cutting edge 103. Both ends of the elongated pivot shaft 104 are respectively journaled in mounting lugs 102 . The end of the shaft 104 near the side plate 60 extends beyond the cooperating mounting lug 102 and connects the mounting arm 10.
5 near one end thereof, and the other end is connected to a rotation shaft 77 for supporting one end of the movable cutting blade 101.
is pivotally coupled to the near end of the Movable cutting blade 101
At the other end is a guide bracket 106 (Figs. 4 and 5).
(see FIG. 11) is firmly attached and the bracket has a laterally outwardly extending guide flange 107.
is provided, and its lower side is a bottom wall 25 of the frame 21.
An elastic guide finger 10 that is firmly attached to the
8 and is thereby pressed upwardly.

The end of the pivot shaft 104 near the guide bracket 106 is connected to the short arm 111 of the bell crank lever 110.
The lever is pivotally coupled to the proximal end of the pivot shaft 77, and the lever is pivotally coupled to the proximal end of the bell crank lever 11.
0 has an elongated rearwardly extending arm 112 provided with an elongated groove or opening 113. Therefore, the movable cutting blade 101 is rotatably supported by the mounting arm 105,
It can be seen that the bellcrank lever arm 111 with the rear end of the movable cutting blade 101 is placed directly below the stationary knife blade 90 and is urged into engagement therewith by the resilient guide fingers 108. Therefore, when the pivot shaft 77 is turned counterclockwise as shown in FIGS.
in cooperation with the cutting edges 92 of the to shear the towel web 58 extending therebetween.

A cam lug 115 is received within the groove 113 of the bell crank lever arm 112 and the lug is secured to a suitable fastener 11.
6 and is attached to the drive wheel 120. Drive wheel 1
20 has a generally cylindrical inner hub 121 (see FIGS. 3 and 7) having one end integral with a radially outwardly extending annular wall 122;
This wall, in turn, is integral with a cylindrical outer flange portion 123 along its outer edge that is substantially coaxial with the hub 121. Cam lug 115 is securely attached to annular wall 122 near its outer edge. Integral to and radially outward from the cylindrical outer flange 123 extends over a predetermined arc around its periphery a stop flange 124 which has a radially extending stop surface 125 and a circumferentially extending guide surface 1 .
It has 26. Also integral with the cylindrical flange 123 is a stop flange 124 extending radially outwardly.
Substantially diametrically opposite thereto is a cam flange 127 having an outer cam surface 128. A stop flange 129 integral with the cylindrical flange 123 and extending rearwardly from the stop face 125 in substantially the axial direction thereof from the stop face 125 to near the end of the cam flange 127.
is extended (see Figure 10).

The cutting device 100 includes a generally cup-shaped hub member 13.
0, the member has a circular end wall 131 with a circular opening 1 extending through its center.
32 and is integral with a cylindrical flange 133 extending axially along its outer edge. Two diametrically opposed grooves 134 are formed in flange 133 and end wall 131 .

The main shaft 65 is provided on its right side as viewed in FIG.
The cam member is generally circular and is provided with cam fingers 141 extending radially outwardly from a portion of its periphery. The cam finger 141 has a radially extending front stop surface 142.
and a radially extending rear stop surface 143. Cam member 140 also has groove 13 in hub member 130.
A pair of generally axially extending lugs (not shown) are provided, each adapted to be received within 4.

In particular, when assembling the cutting device 100, the cam member 1
40 are mounted on a square projection 148 for rotation together and are attached to the end wall 131 of the hub member 130.
are placed back to back parallel to the outer surface of cam member 140 and with their lugs each received within groove 134 so that main shaft 65, cam member 140, and hub member 130 rotate together as a unit.
The short shaft 145 is connected to the cylindrical hub portion 1 of the drive wheel 120.
21 and a short shaft 145 is received within the central opening 132 of the hub member 130 and has a reduced diameter in contact with the end of the square projection 148 of the main shaft 65 and is suitably coupled thereto with a suitable device. Part 146
has. The drive wheel 120 is mounted so that it can rotate independently of the main shaft.

The portion includes the cylindrical flange 13 of the hub member 130.
3 is assembled so that the flange 133 extends outwardly so as to cooperate with an inwardly extending cylindrical flange 123 of the drive wheel 120 to define an annular chamber therebetween for receiving a coiled spring 135, the spring being assembled at its inner end 136.
is fixed to one of the grooves 134 of the hub member 130,
Its outer end 137 is an opening 138 in the cylindrical outer flange 123 of the drive wheel 120 (see FIG. 10).
It can be seen that it is fixed inside.

The latch dog 150 is pivotally mounted on the side plate 61 via a pivot pin 151, and the latch dog 150 has a short arm 152 coupled to one end of a coiled spring 153, the other end of the spring being fixed to the side plate 61. , rotate the latch dog 150 in the counterclockwise direction when looking at the latch dog 150 in FIG.
51 to rotate around it.
The latch dog 150 is also provided with an elongated arm 154 extending generally parallel to the side plate 61 and provided with a cam surface 155 along the bottom, the cam surface 155 mating with a stop surface 157 on the lower latch finger 156. There is. The latch dog 150 is also provided with an upper latch finger 158 that extends outwardly above the lower latch finger 156 and generally perpendicular to the plane of the side plate 61 and is provided with a stop surface 159.

7-9, the lower latch finger 156 is rotatably movable in and out of the rotational path between the cam finger 141 of the cam member 140 and the cam flange 127 of the drive wheel 120; It can be seen that the upper latch finger 158 is rotatably movable in and out of the rotational path of the stop flange 124.

In operation, the cutting device 100 is placed in the starting condition shown in FIGS. 4 and 7 at the beginning of a dispensing operation.
The towel web 58 extends in front of the stationary knife blade 90, after the sloped cutting edge 103 of the movable cutting blade 101, and thus extends outwardly past the dispensing opening 48;
Moreover, its tip 59 protrudes enough to be grasped by the user. The user pulls the tip 59 of the towel web 58, which causes the supply roller 70 and the main shaft 65 to turn counterclockwise as seen in FIG. 4, causing the cam member 140 and the hub member 130 to rotate together with the main shaft 65. . The drive wheel 120 has an upper latch finger 158.
The counterclockwise rotation is restrained due to the engagement between the stop surface 159 of the drive wheel 120 and the stop surface 125 of the stop flange 124 on the drive wheel 120, so it does not rotate. Hub member 130 then rotates relative to drive wheel 120;
This causes the coiled spring 135 to wind up or tighten.

As the user continues to pull the towel web 58 from the dispenser 20, the cam member 140 moves as shown in FIGS.
Continue rotating toward the position shown in the diagram. Once this position is reached, cam finger 141 cams into engagement with cam surface 155 of latch dog 150, thereby causing it to rotate clockwise against the pressure of tension spring 153 as shown in FIG. , raising upper latch finger 158 out of engagement with stop surface 125 of stop flange 124 . The increase in the premium dog 150 is
continuing until the front stop surface 142 of the cam finger 141 engages the stop surface 157 of the lower latch finger 156;
This prevents the cam member 140 and the main shaft 65 from rotating any further.

The dispensing of the web 58 is then stopped, but the drive wheel 120 is released by the raising of the latch dog 150 and by the unwinding action of the coiled coil spring 135 is rotated counterclockwise as seen in FIG. direction to the position shown in FIGS. 6 and 9. When spring 135 is unwound, cam finger 141
tends to retract slightly along the cam surface 155, lowering the latch dog 150 somewhat while the upper latch finger 158 rides along the guide surface 126 of the stop flange 124. When the drive wheel 120 rotates, the cam lug 115 moves to the bell crank lever 110.
is rotated counterclockwise as shown in FIG. 5, thereby moving the movable cutting blade 101 in the direction of the arrow in FIG.
08, the moving and inclined cutting edge 1
03 and the cutting edge 92 of the fixed knife blade 90 to cut the dispensed portion of the towel web 58. As the cam lug 115 passes the top of its circular path, it slides along the groove 113 toward the end of rotation of the arm 112, so that as the lug 115 continues to rotate downward, the lug looks as shown in FIG. Rotate the bell crank lever 110 clockwise to return the movable cutting blade 101 to its rest position as shown in FIG.

When the movable cutting blade 101 is thus retracted into its rest position, the cam surface 1 of the cam flange 127
28 cams into engagement with the lower latch finger 156, and the finger rides along the cam surface 128, thereby raising it to the released position of FIG. Disengages surface 142, thereby allowing continued rotation of main shaft 65. At this point, drive wheel 120 and cam member 140 are oriented in substantially the same relationship to each other as they were in the starting condition shown in FIG. , and there is still enough length to move them both back about 90 degrees to their starting position. Since both the drive wheel 120 and the cam member 140 are rotated by approximately the same angle, the coil spring 1
35 should be substantially unwound while the drive wheel 120 is rotating. However, to ensure that the drive wheel 120 does not turn past the position shown in FIG. 6 at approximately the same time that the latch dog 150 is raised to its highest position by the cam flange 127, the stop flange 129 141 to prevent further counterclockwise rotation of the drive wheel 120 with respect to the cam member 140.

Referring to the second episode, the main shaft 65 was rotated approximately 270 degrees during the dispensing operation, while the lever arm 85 was thereby rotated clockwise as seen in FIG. The spring plate 87 of 88 is pushed downward. When the cutting device 100 is placed in the position shown in FIG.
7 to a position just past the position perpendicular to the longitudinal axis. Therefore, the cam member 140 and the main shaft 65
When the lever arm 85 is loosened by the action of the cam flange 127, the depressed spring plate 87 drives the lever arm 85 upwardly in a clockwise direction to the starting position shown in FIGS. 14
0 and the drive wheel 120 at the same time from the position shown in FIG. 6 to the starting position shown in FIG.
5 slides along the groove 113 toward the end of the lever arm 112 without moving the movable cutting blade 101. When the main shaft 65 is so rotated back to the starting position under the pressure of the spring plate 87, another short length of the towel web 58 passes through the dispensing opening 48 to the feed roller 7.
Dispensed by 0, making it easy to obtain for the next user of the dispensing amount. If the towel web 58 is loosened by the user before the main shaft 65 is turned to the stop position shown in FIG. It is noteworthy that

Although the parts of cutting device 100 may be formed of any material suitable to accomplish the intended function, drive wheel 120 and latch dog 150 are preferably formed of a synthetic organic resin sold under the trade name "Delrin". is preferred, while the bell crank lever 110, movable cutting blade 101, and fixed knife blade 90 are formed of a suitable metal. The cabinet or housing of the dispenser 20 is formed of sheet metal except for the window pane 40, which is formed from a transparent or translucent plastic material so that the amount of paper towel left on the supply roll 70 is visible to the user. preferable.

From the foregoing, there is now an improved paper towel dispenser and cutting device therefor which automatically cuts the dispensed portion of the towel web from the supply roll at the end of the dispensing operation. It has been obtained.

In particular, an improved cutting device is provided which is characterized in that it has a movable cutting blade that remains substantially stationary during dispensing of the towel web.

Moreover, it can be said that the energy driving the movable cutting blade is stored during the dispensing operation and released to cut the dispensed towel web when a predetermined length of towel web has been dispensed. A cutting device has been obtained.

Although what is presently considered to be a preferred embodiment of the invention has been described, it is to be understood that various modifications may be made thereto.

[Brief explanation of the drawing]

FIG. 1 is a front view of a paper towel dispenser constructed according to the present invention and realizing its features, and FIG.
An enlarged cross-sectional view taken along line 2--2 in the figure shows a portion of the cutting device of the present invention, and FIG. 3 is a cutaway front view of the paper towel dispenser shown in FIG. 4 is a cutaway view of the lower part of the dispensing amount shown in FIG. 3 seen from the right side, the side cover of the dispensing device is torn off, and the cutting device is placed in the starting state, and FIG. FIG. 4 is similar to FIG. 4, but the cutting device is placed in an intermediate position at the beginning of the movement of the movable cutting member, and FIG. 6 is similar to FIG. 4, but
The cutting device is shown in the position immediately after cutting the dispensing web; FIG. 7 is an enlarged cross-sectional view taken along line 7--7 of FIG. 4; FIG. 8 is similar to FIG. 9 is similar to FIG. 8, but the cutting device is in the position of FIG. 6, and FIG. 10 is similar to FIGS. FIG. 11 is an enlarged cutaway perspective view of the portion of the cutting device shown, and FIG. 11 shows the movable cutting member in a cutaway horizontal cross-sectional view taken along line 11--11 of FIG. 20...Dispenser, 21...Frame, 22...
... Rear wall, 23, 24 ... Flange, 25 ... Bottom wall, 26, 27 ... Flange, 28 ... Tab, 3
0... Cover, 31... Front plate, 32, 33... Side plate, 34... Flange, 35... Opening, 36, 3
7... Flange, 38... Pin, 39... Stopping member, 40... Window plate, 41, 42... Flange, 4
3... Lock, 44... Flange, 46... Flange, 47... Side wall, 48... Opening, 50... Bracket, 51, 52... Part, 53... Arm, 5
4... part, 55... hub, 56... spool,
57... Roll, 58... Web, 59... Tip, 60, 61... Side plate, 62... Flange, 6
4...Tab, 65...Axis, 66...Button, 6
7... Spring, 70... Roller, 71... Outer surface,
74...Flange, 75...Apron, 76...
Arm, 77...axis, 78...bracket, 80...
Roller, 81...shaft, 84...screw, 85...
Arm, 86...Roller, 87...Spring plate, 88...
...Spring, 89...Support member, 90...Blade, 91...
... Fastener, 92 ... Edge, 100 ... Cutting device, 10
1...Blade, 102...Lug, 103...Edge, 10
4... shaft, 105... arm, 106... bracket, 107... flange, 108... finger, 11
0...Lever, 111, 112...Arm, 113...
...opening, 115...lug, 116...fastener, 12
0...Ring, 121...Hub, 122...Wall, 12
3...Flange part, 124...Flange, 12
5,126... face, 127... flange, 128
...Face, 129...Flange, 130...Hub,
131... Wall, 132... Opening, 133... Flange, 134... Groove, 135... Spring, 136...
...Inner end, 137...Outer end, 138...Opening, 14
0...Cam, 141...Finger section, 142, 143...
... Surface, 145 ... Axis, 146 ... Part, 148 ...
...Protrusion, 150...Dog, 151...Pin, 1
52...Arm, 153...Spring, 154...Arm, 1
55...plane, 156...finger part, 157...plane, 1
58...finger part, 159...plane.

Claims (1)

[Scope of Claims] 1. A cutting device for use as a dispenser for dispensing a web of paper towels from a supply roll and having a supply roller that is rotatable during dispensing of said web, with the difference between a normal rest position and a cutting position. a cutting member attachable to the dispenser for movement between the dispensing position and the supply roll to cut the corresponding web between the dispensing position and the supply roll; and a cutting member coupled to the supply roller and the cutting member between the rest position and the cutting position. a drive device adapted to move the feed rollers, the cutting member, and a dispensing device which, in cooperation with this drive, is normally adapted to hold said cutting member in its rest position during the dispensing of the corresponding web. a mountable latching device, wherein the latching device and the drive device move the cutting member from a rest position to a cutting position in response to rotation of the feed roller through a predetermined angle during dispensing of a corresponding web; , and then moved again into a rest position. 2. Cutting device according to claim 1, characterized in that the movement of the cutting member from the rest position to the cutting position substantially cuts the corresponding dispensed portion of the web from the feed roller. 3. In the cutting device according to claim 1 or 2, the drive device moves the cutting member from the rest position to the cutting position when the drive device is activated.
The cutting device is characterized in that the cutting device is moved so as to return to the rest position. 4. A cutting device according to any one of claims 1 to 3, characterized in that the predetermined angle is approximately 270 degrees. 5 A cutting device for use in a dispensing machine which dispenses a web of paper towels from a supply roll and has a supply roller which rotates during dispensing of the web and which moves between a normal rest position and a cutting position to cut the corresponding web. a cutting member attachable to the dispensing device so as to be able to cut the web between the dispensing portion and the supply roll; and a cutting member coupled to the supply roller and storing energy in response to rotation of the supply roller during dispensing of the corresponding web. an energy storage device adapted to do so; and a drive device having a drive mechanism coupled to the energy storage device and the cutting member and adapted to move the cutting member between a rest position and a cutting position. , a latching device mountable to the dispensing device so as to normally cooperate with the drive to hold the cutting member in its rest position during dispensing of a corresponding web, the latching device and the drive mechanism actuates the energy storage device and the drive mechanism in response to rotation of the feed roller through a predetermined angle during dispensing of the corresponding web, and releases stored energy to the drive mechanism to cut the cutting member from the rest position. A cutting device characterized in that it can be moved into position and back into a rest position. 6. The cutting device of claim 5, wherein the drive mechanism is coupled to the energy storage device and configured to rotate independently of the feed roller upon release of the energy stored within the energy storage device. and a rotating member mounted on the dispenser and coupled to the rotating member and the cutting member, the rotating member driving the cutting member in response to rotation of the rotating member. A cutting device featuring: 7 A cutting device for use in a dispensing machine which dispenses a web of paper towels from a supply roll and has a supply roller which rotates during dispensing of the web and which moves between a normal rest position and a cutting position to cut the corresponding web. a cutting member attachable to the dispensing device so as to be able to cut the web between the dispensing portion and the supply roll; and a cutting member coupled to the supply roller and storing energy in response to rotation of the supply roller during dispensing of the corresponding web. an energy storage device adapted to do so; and a drive device having a drive mechanism coupled to the energy storage device and the cutting member and adapted to move the cutting member between a rest position and a cutting position. a drive member, the drive mechanism being coupled to the energy storage device and adapted to rotate independently of the supply roller in response to release of energy stored within the energy storage device; a rotating member mounted on the dispenser and coupled to the drive member and the cutting member to drive the cutting member in response to rotation of the drive member; and a pivot member fixed on the feed roller. a cam member rotatable with the supply roller from a starting position; a stop surface provided on the drive member; and a cam member coupled between the supply roller and the drive member and responsive to rotation of the supply roller relative to the drive member. a helical coil spring wound around the dispensing device, and a latch member mounted on the dispenser, a latch position in which the latch member engages the stop surface to prevent rotation of the drive member; movable between a release position in which the drive member is allowed to rotate out of the path of a stop surface, the pivot member interconnecting the drive member and the cutting member; a linkage mechanism that cooperates with the drive member to maintain the cutting member in a rest position when a stop surface and the latch member are engaged, the cam member being angled from a starting position during web dispensing; The linkage mechanism is adapted to engage the latch member and move it to a released position after rotating across and rotate the drive member by the unwinding action of the coiled coil spring; A cutting device characterized in that the cutting member is caused to pause and move between cutting positions in response to rotation of a drive member. 8. A cutting device according to claim 7, characterized in that the drive member has a generally cylindrical portion which cooperates with the feed roller and the cam member to form an enclosure for the coil spring. Cutting device. 9. The cutting device according to claim 7 or 8, wherein the latch member is pivotally mounted on the dispenser and has a dog having a latch finger and a cam surface, the latch finger being the cam member is engageable with the stop surface in the latching position of the latching member and is located out of the path of the stop surface in the released position of the latching member, and the cam member is disposed between the latching member and the latching position. A cutting device characterized in that it is rotatable so as to cam engage with the cam surface for rotation to the release position. 10. A cutting device according to any one of claims 7 to 9, wherein the linkage comprises a pin carried near the periphery of the drive member and extending substantially parallel to its axis of rotation; a bell crank lever pivotally mounted to the dispenser, coupled at one end to the cutting member and provided with an elongated groove at the other end, the elongated groove rotating the lever in response to rotation of the drive member; A cutting device having a movably received said pin therein. 11. A cutting device according to any one of claims 7 to 10, comprising: a fixed blade mounted on the dispenser; and a cutting member carried by the dispenser; a guide device adapted to engage with the cutting member to guide the movement of the cutting member between a rest position and a cutting position and to cooperate with the fixed blade to effect a corresponding cut of the web. Characteristic cutting device. 12. The cutting device according to any one of claims 7 to 11, characterized in that the cam member and the drive member are installed coaxially with the supply roller. Cutting device. 13. A cutting device for use in a dispensing machine that dispenses a web of paper towels from a supply roll and has a supply roller that rotates during dispensing of the web,
a cutting member mountable on the dispenser for movement between a normal rest position and a cutting position to cut the corresponding web between the dispenser and the supply roll; an energy storage device adapted to store energy in response to rotation of the feed roller during web dispensing; and an energy storage device coupled to the cutting member to move the cutting member into a rest position and a cutting position. a drive mechanism having a drive mechanism adapted to move between the energy storage device and the energy storage device, the drive mechanism being coupled to the energy storage device and responsive to release of energy stored within the energy storage device. a drive member adapted to rotate separately from the feed roller; a drive member mounted on the dispenser and coupled to the drive member and the cutting member to rotate the cutter in response to rotation of the drive member; a rotating member for driving the member; a cam member fixed on the supply roller and rotatable together with the supply roller from a starting position; a stop surface provided on the drive member; a supply roller and the drive member; a helical coil spring coupled therebetween and wound in response to rotation of the feed roller relative to the drive member, and a latch member mounted on the dispenser, the latch member being a first; A second latching position is movable between a released position and a first latching position in which the latching member engages the stop surface in the starting condition to prevent rotation of the drive member; In the latched position, the latch member engages the cam member to prevent rotation thereof and is out of the path of the stop surface to permit rotation of the drive member; and in the released position, the latch member a second cam member being carried by the drive member, a member being disengaged from the path of both the stop surface and the cam member to permit rotation of both the drive member and the cam member; , the second cam member engages the latch member after movement of the cutting member to the cutting position and moves it to the release position, the return of the first cam member to the starting position and the drive member and the latch the pivoting member includes a ring mechanism interconnecting the drive member and the cutting member, the linkage being adapted to allow the member to return to its starting condition;
The cam member cooperates with the drive member to hold the cutting member in a rest position upon engagement of the stop surface and the latching member in the latching position, and after rotation through a predetermined angle from the starting position during web dispensing. is adapted to engage the latch member to move it to a released position and permit rotation of the drive member by the unwinding action of the wound coil spring, and the linkage mechanism A cutting device characterized in that the cutting member is paused and moved between cutting positions in response to the above. 14. The cutting device according to claim 13, wherein the second cam member is integral with the drive member. 15. The cutting device according to claim 13 or 14, wherein the drive member, the latch member, and the second cam member are all made of synthetic organic resin. 16. The cutting device according to any one of claims 13 to 15,
the drive member having a stop flange disposed in the path of the first cam member such that the stop flange engages the first cam member upon movement of the latch member to a released position; a cutting device adapted to rotate with the first cam member to limit rotation of the drive member with respect to the first cam member. 17. A cutting device according to any one of claims 13 to 15, comprising a housing adapted for a roll of paper towels and having a dispensing opening; a dispensing device having the feed roller rotatably mounted within the housing for dispensing the paper towel web out of the housing via a dispensing device, the cutting device being disposed within the housing. Cutting device combined with mounted dispenser. 18 A cutting device for use in a dispenser for dispensing a web of paper towels from a supply roll and having a supply roller that rotates during dispensing of the web and that moves between a normal rest position and a cutting position to cut the corresponding web. a cutting member attachable to the dispensing device so as to be able to cut the web between the dispensing portion and the supply roll; and a cutting member coupled to the supply roller and storing energy in response to rotation of the supply roller during dispensing of the corresponding web. an energy storage device adapted to do so; and a drive device having a drive mechanism coupled to the energy storage device and the cutting member and adapted to move the cutting member between a rest position and a cutting position. a drive member, the drive mechanism being coupled to the energy storage device and adapted to rotate separately from the feed roller in response to release of energy stored within the energy storage device; a rotating member mounted on the dispenser and coupled to the drive member and the cutting member to drive the cutting member in response to rotation of the drive member; and a pivot member fixed on the feed roller. a first cam member which is rotatable together with the feed roller from a starting position; a stop surface provided on the drive member; and a first cam member coupled between the feed roller and the drive member and configured to rotate the feed roller relative to the drive member. a helical coil spring that is wound in response to the dispensing process, and a latch member is mounted on the dispenser and is movable between first and second latch positions and a released position. and in a first latching position, the latching member engages the stop surface in the starting condition to prevent rotation of the drive member;
In a second latching position, the latching member is adapted to engage and prevent rotation of the first cam member and is out of the path of the stop surface to permit rotation of the drive member; in a position in which the latch member is out of the path of both the stop surface and the first cam member to permit rotation of both the drive member and the first cam member; carried by the drive member, the second first cam member engaging the latch member to move it to the release position after movement of the cutting member to the cutting position; said latch member being pivotally mounted on the dispenser to permit return of the member to the starting position and return of said drive member and said latch member to the starting condition, said latch member being pivotally mounted on the dispenser and having a latch finger and a cam surface. the latching finger engages the stop surface in the latched position of the latching member and is located out of the path of the stop surface in the released position of the latching member, and the latching finger engages the stop surface in the latched position of the latching member; a latching finger, the cam surface extending from the second latching finger, and the first cam member engaging the cam surface when the latching member is in its first latching position. the second latching position when the latching member is in the second latching position; a linkage mechanism in which a cam member rotates into camming engagement with the second latch finger to move the latch member to its released position, and the pivot member interconnects the drive member and the cutting member; the linkage cooperates with the drive member to maintain the cutting member in a rest position upon engagement of the stop surface and the latch member in the first latch position and to maintain the cutting member in the rest position from the starting position during web dispensing. After rotation through a predetermined angle, said second cam member engages said latch member to move it to a released position and permit rotation of said drive member by the unwinding action of said wound coil spring. A cutting device characterized in that the link mechanism causes the cutting member to rest and move between cutting positions in response to rotation of the drive member.