Патент USA US2411917код для вставки
Dec.3, 1946. ' _ ‘ ., P. A. WOOSTER I 2,411,917 DISPENSING DEVICE Filed March 28, 1941 INVENTOR PM»; ,4. Woes/‘er ' ATTORNEY: 2.411.917 ' I Patented Dec. 3, 1946 UNETED' STATE s ‘IN-PATENT orrlea 2,411,917 msrnnsmo DEVICE Philip A. Wooster, San Rafael, Calif. ' Application March 28, 1941‘, Serial No. 385,659 13 @laims. ' (Cl. 271--2.3) ' \ . This invention'relates toldispenslng devices, and particularly ‘to operating mechanism for ' devices for dispensing sheets of material from a continuous web, as for example, paper towels iromaroll of toweling. ' ' ' - In issuing towels to patrons in a public or semi-' public lavatory, the problem of waste has become it to the gear ratio employed, must be rotated a plurality of times to effect dispensing of a length of toweling suitable for the‘usual requirement of drying the hands. Reverse operation of the crank is prevented by a simple spring clutch which‘ disengages the handle from the worm_ gear upon reverserrotation of the handle, acting together with a reverse pawl locking the worm _~ an important one, and attempts have been made , gear wheel against reverse rotation; and the to prevent wasteful use of toweling, by including worm and gear drive is also eifective to prevent in the dispensing mechanism a time delay device 10 withdrawalv of toweling by pulling on vthe end of one sort or another for the purpose of im of the towel which projects from the cabinet. posing a delay after the dispensing of each-towel - One form of the invention is more speci?cally to discourage the, use of several towels by one shown in the accompanying drawing, and de patron where one towel will su?lce adequately ‘ scribed in detail in the following specification,‘ wherein further objects and'advantages of the‘ to perform its intended‘ service. Such delay mechanisms have the disadvantage of often de laying the prompt delivery of towels to successive ' ' invention are made apparent. In the drawing. ' users of the device, and are therefore a source Fig. l is a front elevation of a cabinet for of annoyance to‘ patrons who may attempt to ‘dispensing paper,towels embodying the present dispense a towel after the preceding patron has. invention in the operating mechanism, the cab left the dispenser but before the-required time inet being broken away in parts to disclose the period has elapsed. Such timing mechanisms ' are also undesirable because they are necessarily interior mechanism; complicated ‘in construction, costly to manu facture, noisy, and dimcult to keep accurately of Fig. 1;' of the operating mechanism taken along line _ 4-1 of Fig. 3. The dispensing cabinet shown in the drawing comprises a case to be secured against a wall in a convenient position, and a cover member arranged to conceal the contents of the case. The case, as illustrated in Figs. 1 and 2, com 0 prises a back member ill, a bottom member H, and a pair'of side walls shown at 12. The top and the front of 1 the case are left open to facili tate the insertion of a roll of paper, and the side walls I! are provided with outwardly extending , ?anges l3, which serve to lend rigidity to the structure and also serve to provide a space at It is also an object of the invention to provide " v . These and other objects are accomplished c Fig. 4 is an enlarged detail view of a portion Another object of this invention is to provide a mechanism that is easily and readily operable, which can dispense paper only by rotation of the operating‘ member. and which is automatically locked against dispensing of towelingby a direct .pull thereon. apredetermined length. ' of Fig. 1; and It is the object of the present invention to provide a dispenslng‘vdevice with operating mech a dispensing device with operating mechanism which willv make possible the dispensing of any desired length of ‘toweling, as contrasted to the usual mechanism which dispenses only towels of . Fig. 3 is a sectional view taken on line 3-3 , timed to apre-determined interval. anism which is simple in ‘construction and in expensive to manufacture, and ‘which is quiet and positive in its operation, as well as durable and designed to effect suf?cient delay in the dispens ing of toweling to discourage wasteful use but which will in no way interpose any delay between successive operations of the device. ‘1 Fig. 2 is a sectional view taken on line 2-2 both ends of the case for the reception of oper ating mechanism. The‘ cover member, hinged as at H to a member I5 which extends across the top of the case, comprises atop l6 which ' curves to join a front wall l1, and has a pair -'of.side walls 18 which, with the top and front I through the provision of a simple worm and gear drivelfor a. dispensing. roller which advances the 60 towel from a continuous roll of toweling‘ con talned within the dispensing case or cabinet.‘ The drive wormand gearv are operated by a small hand crank which projects from the cabinet at a convenient and practical angle and which, due Yet 40 portion, ‘serve to conceal the entire case and operating mechanism, with the exception‘ of the bottom wall thereof. I - Within the case a pair of inclined‘ shelves or ledges I9 secured one to eachvof the side walls I! support a roll 20 of paper toweling by its edges in a manner to permit toweling to I 9,411,917 will be su?lciently rapid to prevent annoyance to withdrawn from the roll. Journalled in and ex tending between the side walls |2 are a dis pensing roller 2| and a pressure roller 22, The free end of the toweling is led from the roll 20 the patrons using the device. \ It is essential, however, to provide a worm and worm gear of such driving ratio and design that it is impossible to drive the worm by its gear and thus prevent a patron from grasping the exposed end of over the top of the roller 2| between the rollers 2| and 22 and to a point where it may project as indicated by the arrow 23 from an opening in the bottom of the case. Consequently, rota tion of the roller 2| will effect withdrawal of the toweling and pulling it out by hand. With the worm gear thus properly designed there is in e?‘ect a friction locklwhich prevents withdrawal toweling from the roll 28 and will eject it 10 of the toweling by a direct pull. Were it possible through the opening in the bottom of the case to operate the dispensing mechanism in a reverse in the conventional manner so that it may be torn free from the continuous length to be used direction, the toweling could be fed backwardly to a point where its leading end was released from between the. dispensing roller 2| and pressure In order that the toweling ma; be dispensed 16 roller 22, and consequently subsequent operation of the crank in its proper direction would fail to ' easily and positively, and without waste thereof, dispense toweling, the present invention provides the mechanism il To prevent this ‘a pawl 34 is arranged to engage lustrated best in Figs. 3 and 4 for e?ecting rota with the teeth of the worm gear 32 to prevent tion of the dispensing roller 2|. The principal parts of the rolleroperating mechanism are en 20 reverse rotation thereof and to insure that the crank will be freed by the clutch spring 3| in the closed within a small case 25, preferably secured event of attempted rotation in the wrong direc by a ?anged edge 26 to the side wall-l2 by means tion. This pawl 34 is preferably formed of a single .of bolts shown at 2'!’ or any suitable fastening plate shaped, as best illustrated in Fig. 4, with two means. This case 25 rotatably supports a crank 28 which extends out through the bottom of the 25 ends which project through bearings 35 which are formed by perforating and pressing outwardly‘ 7 main case of the dispenser and projects slightly _ the side wall I2 of the main case and inwardly forward of the front wall thereof to occupy a posi the side wall of the small case 25. This forms an tion easily-accessible to a usenwho will rotate the inexpensive structure and mounting for the pawl crank in order to dispense the length of toweling. The angle of disposition ‘of the crank, the main 30 34 which engages the teeth of the gear by gravity, axis for which is inclined forwardly and down- ‘ and ,is limited in its upward swinging movement as a towel. ' by a stop 38 in the form of a small angular mem wardly, is desirable because it enables the crank ber secured to the wall |2 (see-Fig. 3). The pawl to project below the lower edge of the front por is also fastened, as shown in Fig. 4, to clear a‘ tion ll of the cover member and slotting or perfo rating of the cover member is therefore unneces 35 spring 31 which serves to ‘retain the pressure roller 22 against the dispensing roller v2|. The spring . sary, with the result that the cover is both strong 31 is one of a pair mounted one at each end of the er and less expensive to manufacture. This angle main case and extends between a ?xed eye 33 also insures against moisture entering the case, and a'bearing 39 which embraces a journal 49 wherevit may serve to rust orotherwise deteriorate. the operating mechanism, it being‘ understood 40 projecting from the end of the pressure roller 22, that the crank is almost invariably operated by wet hands, and in most dispensers employing an ' which journal is guided between ?anges 4| bent outwardly at the edges of the slot in the side wall ' l2. This provides a pair of ?oating bearings for the pressure roller 22 which are resiliently urged ‘result in considerable damage over a period of 45 toward the dispensing roller 2| to facilitate re moval of the roller 22 for replacement or repairs time. ' to any of its associated parts. On the crank 28 within the ‘case 25 is rotatably The slots in which its journals are guided are supported a worm 29. Pinned to the crank against continued, as best illustrated in Fig. l, in the ' rotation is a shouldered collar 30.' The abutting ends of the collar 30 and worm 29 are of the 60 ?ange | 3 as shown at 42. Upon removal of’ the springs 31 which urge the pressure roller toward same diameter and coiled about them is a spring operating crank the moisture which enters the dispenser along the crank handle is suf?cient to 3| which serves as a uni-directional or one-way the dispensing roller, it may therefore be easily clutch, as rotation of the crank and bushing 30 in one directionltends to tighten‘ the coils of the spring 3| which grips the shank of the worm 29 and shank of the bushing 30. On the other hand, rotation of the crank in the opposite direction tends to loosen or enlarge the coils of the spring 3|, which permits it'to slip over ‘the shank of the worm 29 and/or the shank of the bushing 30. 60 posite side to prevent unauthorized tampering with the exposed mechanism. removed from its position within the case. The small case 25 must of course be ?rst removed, and there is preferably an identical case for the op The toweling. after passing between the rollers, is carried toward the opening in the bottom of the case by a curved wall 43 which more or less The worm meshes with a ‘worm gear v32 which is follows the contour of the roller 2| and the lower ?xed to the trunnion 33 which isthe journal for one end of the dispensing roller 2|. Consequently, edge of which serves as a tearing edge against which the dispensed portion of the toweling may be torn away. This wall 43 extends between the rotation of the crank rotates the dispensing roller 2| at a greatly reduced rate of speed, the driving 65 side plates of the main case and at its upper edge is provided with ?ngers 44 which project into ratio preferably being such that a plurality of grooves 45 in the pressure roller 22 t6 prevent turns of thecrank will be necessary to dispense a any‘possibility of the toweling passing upwardly length of toweling suitable for ordinary uses. into the case rather than down through the dis While this gear ratio may be greatly varied, de pending upon the speed of operation desired, it 70 charge chute formed by the wall 43. The bottom has been found that a ratio'whlch will effect dis pensing ten or twelve inches of toweling upon some ?fteen or twenty turns of the crank will e?ect an operation sufficiently slow to discourage wasteful use of the toweling. and at the same time 76 ll of the case is also bent upwardly under the dispensing roller 2| and is provided at its edge with ?ngers 46 extending into grooves "in the’ dispensing roller. , \ . A latch'to retain the cover in its closed pool . 2,41 1,917 > . ‘ . 5 - tion is provided by a spring ll secured to the . connecting the crank to the roller and arranged exterior oi’ the wall ‘I and having a lower end which engages a lip on the forward bottom edge of the cover. This latch may be disengaged by a key or any suitable instrument inserted through an opening provided in the cover for that pur pose. When the cover is in its closed position to'require a plurality of turns of the crank to each revolution of the roller, means for preventing re verse rotation of the roller. and a one-way clutch interposed‘ in the drive means to disconnect the crank from the roller upon reverse turning of the crank. . - 8. Operating mechanism for a towel dispenser comprising a dispensing roller, a crank, a worm and gear drive connecting said crank and roller, the case and proiectingupwardly therefrom, and 10 a one-way clutch interposed between the crank the cover may be retained in its open'position v and the roller to free the crank on reverse tum by having its side walls pressed toward each other ingthereor, and means for preventing reverse slightly so that they'will engage ‘within and be rotation of the roller. . . supported by clips 50 which extend upwardly 9. Operating mechanism for a towel dispenser from the outer edges of the ?anges l3. Due to 15 comprising a dispensing roller, a crank rotatable the clips 49 and '50 which serve to support and. through at least one revolution in either direc protect the cover. it may be made of considerably tion, drive means connecting the crank and dis . its lower rear comers are engaged behind and a protected by clips ‘9 secured to the bottom of lighter material than is ordinarily ' considered necessary for such a purpose, with very much less , pensing roller to rotate the roller once upon a of turns of the crank, and a one-way danger of its becoming bent or otherwise dam 20 plurality clutch interposed in the drive means to free the aged. crank from the roller upon reverse turning of Having thus described my invention, what I the crank. _ claim and desire to secure by Letters Patent is: 10. Operating mechanism for a towel dispenser 1. Operating mechanism for a towel dispenser comprising a dispensing roller, a crank, a worm 25 comprising a dispensing roller, a crank rotatable and gear driveconnecting said crank and roller, - through at least one revolution in either direc tion, drive means connecting the crank and dis _ and a uni-directional friction clutch between pensing roller to rotate the roller once upon a said crank and worm to prevent reverse rotation plurality of turns of the crank, a one-way clutch of the worm. v 2. Operating mechanism for a towel dispenser 30 interposed in the drive means to free the crank from the roller upon reverse turning of the crank, comprising a dispensing roller, a crank, a worm and means for preventing reverse rotation of the _ and gear drive connecting said crank and roller, a uni-directional friction clutch between said 11. ‘Operating mechanism for a towel dispenser “crank and worm to prevent reverse rotation of comprising a dispensing roller, a crank, and drive 35 the worm, and a pawl engaging the gear teeth means connecting the crank and dispensing roller to prevent reverse rotation of the gear. to rotate the roller forwardly continuously to‘dis ; 3. Operating mechanism for a towel dispenser pense a continuous length of towel upon contin comprising a dispensing rollena crank rotatable uous turning of the crank, each rotation of the through at least one revolution in both directions, ‘.9, worm and gear drive connecting said crank 40 roller requiring a plurality of turns of the crank, and roller, and means to prevent retraction of ' ' said drive means providing a lock for preventing dispensing rotation of the roller except by turn the toweling by operation of the crank in a re ing the crank. ‘ verse direction. ' ~ ' , 12. Operating mechanism tor a towel dispenser 4. In combination with a towel dispensing cab comprising a dispensing roller, a crank, drive ~ inet, means for dispensing toweling from a supply , means connecting the crank and dispensing roller contained therein comprising a rotatable operat and adapted to rotate the roller forwardly through ing crank mounted for rotation on an, axis that ' a plurality of revolutions continuously to dispense extends downwardly and away from‘ the cabinet. a continuous length or towel upon continuous 5. Operating mechanism for a towel dispenser turning of the crank, each rotation of the roller roller. comprising a dispensing roller, a crank, a worm and gear driveconnecting said crank andsroller, ' means to permit reverse operation or the crank, , and means to prevent retraction of the towehng by operation or the crank in a reverse direction. 6. Operating mechanism for a towel dispenser comprising a dispensing roller, a crankrotatable‘ - ' requiring aplurality oi turns'of the crank, said drive means preventing dispensing rotation of the ‘ roller except by turning the crank, and means for preventing .reverse rotation of the roller. 13. Operating mechanism for a towel dispenser comprising a dispensing roller, a crank, a worm and gear drive connecting the crank and dis pensing roller to rotate the roller forwardly con tinuously to dispense a continuous length of towel the crank to the roller, and a one-way clutch crank. each rota interposed in the drive means to disconnect the 80 upon continuous turning oi‘ theplurality of turns tion .0! the roller requiring a crank from the roller upon- reverse turning of the of the crank, and means for preventing reverse rotation of the roller. 7. Operating mechanism for a towel dispenser PHILIP A. woosrnn. comprising a roller, a crank turnable in either direction, a worm and gear drive means 65 through at least one revolution in either direc tion, a worm and gear drive means connecting crank. ’ '