US 3408125 A
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Description (OCR text may contain errors)
Oct. 29, 1968 RASMUSSEN 3,408,125
PAPER DISPENSER Filed Oct. 10, 1966 6 Sheets-Sheet l INVENTOR HOLGER RASMUSSEN ATTORNEYS Oct. 29, 1968 H. RASMUSSEN 3,408,125
PAPER DISPENSER Filed Oct. 10, 1966 6 Sheets-Sheet 2 w I m All 6 g a S Q Q L!- INVENTOR HOLGER RASMUSSEN BY M Get. 29, 1968 H. RASMUSSEN PAPER DI SPENSER 6 SheetsSheet 5 Filed Oct. 10, 1966 INVENTOR HOLGER RASMUSSEN BY 7 MM Oct. 29, 1968 H. RASMUSSEN PAPER DISPENSER 6 Sheets-Sheet 4 Filed Oct. 10, 1966 I NVENTOR HOLGER RASMUSSEN BY M PAPER DI SPENSER 6 Sheets-Sheet 5 Filed Oct. 10. 1966 INVENTOR HOLGER RASMUSSEN Oct. 29, 1968 H. RASMUSSEN PAPER DI SPENSER 6 Sheets-Sheet 6 Filed Oct. 10, 1966 INVENTOR HOLGER RASMUSSEN United States Patent 3,408,125 PAPER DISPENSER Holger Rasmussen, Lausanne, Switzerland, assignor to Steiner Company Lausanne S.A., Lausanne, Switzerland, a corporation of Switzerland Filed Oct. 10, 1966, Ser. No. 585,416 Claims. (Cl. 312-39) ABSTRACT OF THE DISCLOSURE There is disclosed a paper towel dispenser of the character wherein the user grips and pulls an exposed leading end of the paper to extract paper from the dispenser, a stop mechanism automatically stopping outward movement of the paper after a predetermined length thereof has been withdrawn, timing mechanism actuated by the stop mechanism positively to prevent dispensing of the paper for a predetermined time interval, an internal feed mechanism for advancing the paper at the end of the predetermined time interval so as to project the leading end of the paper out of the dispenser, and a manually operable mechanism for dispensing paper from the dispenser if there is no free end extending outwardly therefrom.
The present invention relates to paper towel dispensers and, more particularly, to improvements in paper towel dispensers of the kind wherein the paper is dispensed from a roll thereof contained within the cabinet of the dispenser.
The dispenser of the present invention is characterized by the fact that the user of the dispenser, in its normal operation, grips and pulls on an exposed leading end of the paper in order to extract paper toweling from the cabinet. When a predetermined length of toweling has been withdrawn from the cabinet, a stop mechanism automatically stops the outward movement of the toweling and simultaneously initiates the functioning of a timing mechanism. Normally, the user of the dispenser tears off the withdrawn length of toweling at this time and dries his hands. Subsequently, the timing mechanism times out, releasing the stop mechanism, whereupon an internal feed mechanism advances the paper so as to project from the cabinet the leading end of the paper web, this leading end thereby being made available to be gripped by the next user preparatory to withdrawal of a further length of toweling.
One of the principal objects of the present invention is to provide a paper dispenser of the above-described kind having a highly-improved stop mechanism embodied therein, said stop mechanism being inexpensive to construct but being extremely durable and reliable in use.
Still another object of the present invention is to provide in said dispenser an improved feed mechanism for feeding out a short length of the toweling after the timing out of the timing mechanism.
Yet another object of the invention is to provide in the dispenser improved means for insuring that the paper is securely held in engagement with certain measuring rolls.
Another object of the invention is to provide in a towel dispensing cabinet of the character described, improved means for manually advancing the measuring rolls, and thus manually advancing the paper, to bring to an exposed position the leading end of the paper.
These and other objects of the present invention, together with its numerous advantages, will be apparent from the following description of a preferred embodiment thereof, taken with the accompanying drawings, wherein:
FIGURE 1 is a side elevational view of a paper dispenser embodying the invention, the dispenser being shown mounted on a vertical wall;
Patented Oct. 29, 1968 ice FIG. 2 is a front elevational view of the dispenser taken substantially along the line 2-2 in FIG. 1, showing the front cover of the dispenser removed and certain other parts cut away;
FIG. 2a is a detailed view taken substantially along the line 2a2a in FIG. 2;
FIG. 3 is an end elevational view of the dispenser taken substantially along the line 3-3 in FIG. 2;
FIG. 3a is a fragmentary elevational view of the stop mechanism embodied in the cabinet and illustrated in the lower portion of FIG. 3, the apparatus being illustrated in FIG. 3a in the position it occupies after the dispensing of paper has been initiated and the stop action of the stop mechanism is about to take place;
FIG. 4 is a fragmentary plan view of the stop mechanism of FIG. 3a, FIG. 4 being taken substantially along the line 44 in FIG. 3;
FIG. 5 is a fragmentary sectional view taken substantially along the line 55 in FIG. 2;
FIG. 6 is a cross-sectional elevational view of the dispenser taken substantially along the line 66 in FIG. 2, the end of the dispenser illustrated in FIG. 6 being opposite the end shown in FIG. 3;
FIG. 6a is a diagrammatic illustration of the position of the crank forming a part of the mechanism automatically to dispense paper after the stop mechanism has timed out; and
FIG. 7 is a view like FIG. 6, but showing the feedafter-timing mechanism in a different position than that shown in FIG. 6.
Referring initially to FIGS. 1, 2, and 3, it will be observed that the present dispenser is comprised of a cover 1 suitably carried upon an L-shaped base plate 2, the lat ter of which may be secured to a vertical wall. The upstanding base plate 2 has fixed thereon aforwardly and downwardly curved metal sheet 3 upon which rests a roll of paper toweling 4, the roll 4 being rotatably mounted at its opposite ends on pins 5a and 6a respectively formed on discs 5 and 6, said discs being carried on a U-shaped support 7 pivotally secured to the upstanding base plate 2 by means of brackets 7a and 7b.
The forwardly and downwardly curved metal plate 3 partially supports the roll 4 of paper toweling and also serves as a brake therefor, thereby to prevent any uncontrolled unrolling or withdrawal of paper from the roll. Below the roll 4 there is a pair of spaced-apart upstand- 1ng supports 8a and 8b (FIG. 2) mounted upon the horizontal portion of the base plate 2, these supports 8a and 8b rotatably having mounted therein a horizontal shaft 8. The shaft 8, in turn, has fixed thereto a pair of rela tively-large rollers 9a and 9b having their respective surfaces knurled or the like. The rollers 9a and 9b may be formed of hard rubber, or plastic or the like. Each of the rollers 9a and 9b is provided with a co-operating smaller pressure roller, the two pressure rollers being designated in the drawings as 10a and 10b. The pressure rollers are mounted on a common shaft 10 which rides in upstanding finger-like brackets formed on the front side of a metal apron 11. The metal apron 11 has a pair of openings 11a formed therein through which the rollers 10a and 10b extend rearwardly and into contact, respectively, with the large rollers 9a and 9b when no paper toweling is disposed therebetween. The apron 11 has a pair of rearwardly-extending ears formed on its opposite ends which are pivotally mounted upon a pair of rivets 12 (FIG. 3) which are provided in upstanding flanges formed upon the opposite ends of the horizontal portion of the base plate 2, these rivets 12 serving not only for the mounting of the apron 11, but also serving pivotally to secure the cover 1 upon the base plate 2.
The side walls of the cover 1, at the opposite ends of the dispenser, are provided with inwardly-directed ears 1a which, when the cover 1 is closed, engage and press rearwardly on the upper-end portions of the apron 11, there by tending to move the apron 11 rearwardly about the rivets 12 firmly to press the pressure rollers a and 10b against the larger rollers 9a and 9b or against the paper toweling disposed therebetween, as the case may be. It will thus correspondingly be seen that, when the cover 1 is opened, the apron 11 may be pivoted forwardly to separate the pressure rollers 10a and 10b from the larger rollers 9a and 91;, thereby to permit easy feeding of the leading end of a fresh paper roll 4 between the pressure rollers 10a and 10b and the rollers 9a and 9b when a new roll of paper is being installed in the cabinet.
The paper toweling, as will be seen in the drawings, is fed downwardly between the rollers 9a and 9b and the pressure rollers 10a and 10b and thence downwardly and outwardly through a slot which is provided between the lowermost end of the apron 11 and the upturned forward edge 2a of the base plate 2 (see FIG. 6). The paper fed through the slot may be separated from the roll by tearing the same across the horizontal lower edge 110 of the apron 11, which edge may be toothed or serrated.
In order to avoid excessive consumption of paper toweling, the dispenser is provided with a stop which 0perates during each dispensing operation to stop the feed out of paper when a predetermined length of paper has been dispensed. Following a-predetermined time interval thereafter, a feed-after-timing mechanism automatically advances the paper a short distance so as to project from the slot adjacent the lower end 110 of the apron 11 the leading end of the paper toweling which may be gripped by the user preparatory to the making of another dispensing operation.
With respect to the stop mechanism, the right end of the shaft 8, as viewed in FIG. 2, has fixed thereon an arm 16 having formed at its outer end a flat transverse stop surface 16a. When the leading end 4a of the paper towel (see FIG. 3) is gripped by the user and pulled downwardly, the rollers 9a and 9b and the shaft 8, as well as the stop arm 16, are rotated in the direction of the arrow Fl (FIG. 3). This rotation of the stop arm 16 brings the stop member 16a into camming contact with a diagonal flange 17a formed on the back side of an arm 17, the latter of which is pivotally mounted at 18. The engagement of the stop member 16a with the flange 17a pivots the arm 17 in a counterclockwise direction. as viewed in FIG. 3, thereby to raise the right-hand portion of the arm 17 against the force of a retaining spring 19 which tends constantly to urge the lever 17 in a clockwise direction. The raising of the right-hand end of the arm 17 causes a suction cup 20 mounted thereon to be raised into pressed engagement with another suction cup 21 which is mounted by a suitable bracket 22 upon the base plate of the dispenser. The upper suction cup 21 is provided with a valve 23 having an adjustable core 24 which may be controlled by the turning of an adjustment screw 25, so as to control the rate at which air would be admitted into the interior of the two suction cups through the valve 23. Once the lower cup has been engaged to press upwardly against the upward suction cup, the two suction cups will adhere to each other, and thus keep the arm 17 in its rotated position, until sufficient air is bled into the space between the cups, thereby to permit the cups to separate and to permit the arm 17 to be restored to its initial position shown in FIG. 3. This action of the suction cups serves to provide a predetermined time interval. As the rotation of the arm 16 and the stop member 16 produce engagement with the flange 17a of the lever 17, and thus cause pivotation of the arm 17 and the engagement between the suction cups, the lowering of the left or forward end of the arm 17 brings into blocking position an inwardly-directed stop member 17b formed on the back side of the lever 17. Thus, immediately after the stop surface 16a cams downwardly the left end of the lever 17, the stop member 16a engages the stop member 17b, thereby to halt the dispensing of the paper towel. When this stop condition has been reached, the predetermined time interval will have been simultaneously initiated as described above. During the time interval and after the stop condition has been reached, the user normally will tear off the extracted toweling along the lower edge of the apron 11.
The left end of the shaft 8, as viewed in FIG. 2, has fixed thereon a lever 13 having on its outer end a roller 13a or the like which co-operates with a leaf 14a of a spring 14. The spring 14 is disposed about a fixed support 15, with the other end 14b of the spring abutting the base plate 2. In the position I of the lever 13 illustrated in FIG. 6 and shown in solid lines in FIG. 6a, the spring leaf 14a is released. It will be tensioned or compressed, however, by rotary movement of the rollers 9a in the direction Fl through an angle W (FIG. 6a) as paper is withdrawn from the dispenser in the manner described above. When the lever 13 reaches the position II illustrated in FIG. 6a, the spring compression reaches its maximum value. Slightly further rotation of the lever 13 brings the lever to the position designated III in FIG. 6a, wherein the roller or nose of the lever 13 arrives in the base of the dog leg or bent portion of the spring, as shown in FIG. 7. This latter position of the lever 13 corresponds to the stop position wherein the previously-mentioned stop member 16a comes into contact with the stop member 17b.
When the previously-described suction cups 20 and 21 time out and separate, the spring 19 immediately pivots the lever 17 in a clockwise direction, lowering the right end of the lever 17 (as viewed in FIG. 3) and raising the left end thereof. The raising of the left end of the lever 17 raises the stop member 17b out of the path of the stop member 16a, whereupon the stored energy in the spring 1411 substantially instaneously advances the lever 13 from the position thereof shown in FIG. 7 to the position thereof illustrated in FIG. 6. This advancing action rotates the shaft 8 and the rollers 9a and 9b through the angle 1 shown in FIG. 6a, thereby advancing the paper toweling and causing the forwardmost end thereof to project downwardly from the bottom of the dispenser. The exposed forward end of the toweling may thus be again gripped by a user preparatory to another dispensing operation.
The time interval between the stopping of the dispensing of the paper toweling and the subsequent separation of the vacuum cups 20 and 21 may be selectively varied by the adjustment of the screw 25. The screw 25, as shown, may be threaded in the upper flange of its mounting bracket 22, so that turning of the screw 25 will raise or lower the needle valve 24, thereby to vary the rate at which air will be bled into the space between the suction cups.
It will be appreciated from the foregoing that paper dispensers for dispensing various lengths of paper toweling may be produced in accordance with the present invention with only minor change in parts. For example, merely by selecting guide rollers 9a and 9b of various diameters and by changing the position of the ears 1a, any selected length of paper toweling, within reasonable limits, may be dispensed.
In order to manually advance the paper to an exposed position when the cabinet is first filled or when, for one reason or another, the leading end of the paper has been torn off or is otherwise not available for withdrawal of the paper toweling, the present dispenser is provided with a latchwork which allows a manual operation of the rollers 9a and 9b. This latchwork is comprised of a pivotal yoke 26 on a transverse member 27 (see FIG. 2), with the free end of the yoke bent into a pawl 26a and arranged to mesh with the knurled surface of the roller 91). The forward side of the yoke 26 is provided with a push button 28 which may be pressed in the direction designated by the arrow 0 in FIG. 3a. The pressing of the finger button 28 tilts the yoke 26 from the solid-line position thereof seen in FIG. 3a to the broken-line position wherein the inner end 26a contacts the surface of the roller 9!). The transverse member 27 upon which the yoke 26 is pivotally mounted is supported between two parallel L-shaped levers 29a and 2917 which are disposed on opposite sides of the roller 9b. Each of the levers 29a and 29b is provided with a recess 29c (FIG. 5) the diameter of which corresponds approximately to that of the shaft 8 and the circumference of which is approximately three-quarters of the circumference of the shaft. The levers 29a and 29b ride freely on the shaft 8 on the inner surfaces of the recesses 29c, and one of the levers 29a or 29b is provided with a return spring 30. As shown in FIG. 5, the return spring 30 is attached at one of its ends to lever 29b, and its other end is suitably attached to the housing of the cabinet or to any suitable part of the base plate 2. The return spring 30 tends to pivot the levers 29a and 29b in the clockwise direction (as viewed in FIG. 5), thereby to tend always to return the yoke 26 to its nonworking position.
The operation of the latchwork described above is best illustrated in FIGS. 3, 3a and 5 of the drawings wherein it will be seen that if a user pushes inwardly upon the finger button 28, the yoke 26 pivots from the solid line position in FIG. 3a to the dashed line position illustrated therein, thus moving the pawl 26a into engagement with the roller 9b. Continued or additional rotary motion of the parts in the direction of the arrow 0 in FIG. 311 under the urging of the users finger will cause the roller 9b to be rotated in a counterclockwise direction, i.e., in the direction of the arrow Fl in FIGS. 3 and 3a so as to feed the paper toweling 4 in the usual dispensing direction. After the latchwork including the yoke 26 and the levers 29a-29b has been pivoted in the direction of the arrow 0 as far as they can be moved against the action of the spring 30, the user releases his finger from the pushbutton 28 thus permitting the spring 30 to return the parts to the position illustrated by solid lines in FIG. 3a. The manual dispensing operation can then be repeated, and in fact may be repeated as many times as required to provide a satisfactory length of paper toweling 4 extending through the dispensing slot.
The dispenser as described above is comprised of a combination of easily-produced parts, and its assembly and use require substantially no highly-trained personnel. The dispenser may be mass produced, without special costs, and the production thereof is accordingly profitable. Because of the simplicity of the design of the dispenser, very little maintenance is required, and such maintenance as may be necessary may be supplied by relativelyuntrained personnel.
1. A dispenser for dispensing paper from a roll thereof, comprising: a cabinet having a cover hingedly mounted thereon; a guide roller mounted in said cabinet and contacted by the paper and rotated thereby as the paper is withdrawn from the dispenser; an arm mounted on said roller and having a first stop surface thereon; a movable lever pivotally mounted on said cabinet and having a second stop surface thereon, said lever having a displaced position wherein said second stop surface is in the path of said first stop surface and a normal position wherein said second stop surface is out of the path of said first stop surface; a cam surface on said lever engaged by said arm during the rotation thereof for moving said lever from its normal position to its displaced position after which said first stop surface engages said second stop surface thereby to halt rotation of said guide roller and the withdrawal of paper from said dispenser;
means for maintaining said lever in the displaced position thereof for a predetermined time interval; a mounting member hingedly mounted upon said cabinet and being disposed adjacent to said guide roller; a pressure roller mounted on said mounting member adjacent to said guide roller for pressing paper therebetween; and a bearing member mounted upon said cover and movable into engagement with said mounting member when said cover is closed, thereby forcefully to press said pressure roller toward said guide roller and to pinch the paper therebetween.
2. The dispenser set forth in claim 1, wherein said mounting member is an apron having a lower edge defining in part a paper discharge opening from said cabinet, said lower edge being serrated to permit the paper to be torn thereacross.
3. A dispenser for dispensing paper from a roll thereof, comprising: a cabinet; a guide roller mounted in said cabinet and contacted by the paper and rotated thereby as the paper is withdrawn from the dispenser; an arm rotated by the rotation of said roller, said arm having a first stop surface thereon; a movable lever pivotally mounted on said cabinet and having a second stop surface thereon, said lever having a displaced position wherein said second stop surface is in the path of said first stop surface and a normal position wherein said second stop surface is out of the path of said first stop surface; means on said lever engaged by said arm during the rotation thereof for moving said lever from its normal position to its displaced position, whereby said first stop surface engages said second stop surface and thereby halts rotation of said guide roller and the withdrawal of paper from the dispenser; means for maintaining said lever in the displaced position thereof for a predetermined time interval; a finger operated pawl disposed outside of said cabinet and in a position adapted to engage the peripheral surface of said guide roller; and means mounting said pawl for movement about the axis of said roller, engagement of said pawl by the finger of a user serving first to' move said pawl into engagement with the surface of said guide roller and further movement of said finger operated pawl serving to pivot it about the axis of said guide roller to cause said pawl to advance said guide roller and the paper to cause dispensing of the paper from the dispenser.
4. The dispenser set forth in claim 3, wherein said means mounting said pawl is a lever journalled on the same axis as said guide roller, said pawl being pivotally mounted on said levers and pivotal from a normal position wherein said pawl is spaced from the surface of said guide roller to a position wherein said pawl engages said guide roller.
5. The dispenser set forth in claim 3, and further comprising resilient means interconnecting said cabinet and said pawl to return said pawl to its normal position out of engagement with said guide roller upon release thereof by the user.
References Cited UNITED STATES PATENTS 2,243,686 5/1941 Steiner et al 31239 XR 2,273,384 2/ 1942 Steiner et al 3l239 XR 2,320,453 6/1943 Birr 31238 2,369,851 2/1945 Price et al. 3l239 XR 2,601,956 7/1952 Birr 242-55.53 2,849,269 8/1958 ZizZi 31239 BOBBY R. GAY, Primary Examiner.
J. L. KOHNEN, Assistant Examiner.