US3613478A - Apparatus for temporarily locking a spindle,particularly in a hand towel dispenser - Google Patents

Apparatus for temporarily locking a spindle,particularly in a hand towel dispenser Download PDF

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Publication number
US3613478A
US3613478A US45021A US3613478DA US3613478A US 3613478 A US3613478 A US 3613478A US 45021 A US45021 A US 45021A US 3613478D A US3613478D A US 3613478DA US 3613478 A US3613478 A US 3613478A
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US
United States
Prior art keywords
spindle
pawl
cam piece
abutment
suction cup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US45021A
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English (en)
Inventor
Holger O Rasmussen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CWS APPARATE AG
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CWS APPARATE AG
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Filing date
Publication date
Application filed by CWS APPARATE AG filed Critical CWS APPARATE AG
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Publication of US3613478A publication Critical patent/US3613478A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers; Toilet paper dispensers
    • A47K10/28—Towel dispensers; Toilet paper dispensers dispensing a clean part and taking-up a soiled part, e.g. using rolls; with dispensers for soap or other detergents; with disinfecting or heating devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20924—Controller checks

Definitions

  • said cam piece engages at least one further abutment on said member for moving it into further intermediate positions and finally into its end position.
  • Limiting means may be provided for selectively preventing complete restoration of said member to its starting position so that the spindle is then locked after fewer than a maximum number of replutions.
  • a suction cup carried by a member which is movable by a cam piece connected to the roller or its spindle into an end position to press the suction cup against a counter element, the member holding the spindle when in its end position. After a predetermined lapse of time the suction cup detaches from the counter element and the movable member returns to a bottom position under the action of weight and/ or springs, in which the roller is released again.
  • the aforesaid cam piece can be arranged directly on the spindle of the roller; the roller will then be temporarily stopped after each single rotation thereof.
  • the cam piece may be arranged on a special spindle which is connected to the roller through appropriate gearing. This however involves a complication of the apparatus.
  • the object of this invention is to obtain a simple inexpensive arrangement by means of which a spindle can be temporarily locked after every two or more complete rotations.
  • the invention provides an arrangement for the temporary locking of a spindle, particularly in a hand towel dispenser, after two or more complete rotations for a period of time determined by a suction cup held by suction against a counter element, the suction cup being carried by a member which is movable into an end position against spring and/or gravity action by a cam piece Patented Oct. 19, 1971 connected to the spindle, to urge the suction cup against the counter element, the member located in the end position holding the spindle.
  • this arrangement is characterised by the fact that the movable member has at least two abutments which are arranged one behind another with respect to the direction of movement of the member in such a way that, starting from a bottom position of the member, the said cam piece engages a first one of the said abutments during a first rotation of the spindle to bring the member into an intermediate position, and during a succeeding rotation of the spindle engages a last one of the said abutments to bring the member into the end position and thus to press to suction cup against the counter element; and that a pawl cooperating with a stop means is provided for retaining the member in the intermediate position, this pawl moving into the effective range of said stop means concomitantly with the movement of the member into its intermediate position and being moved out of this effective range when the member is moved into its end position.
  • the aforesaid pawl may be pivotally mounted on the adjustable member and cooperate with a fixed stop.
  • the pawl may be disposed in the path of travel of a part, connected to the spindle, which turns the pawl into the effective range of the fixed stop during the first rotation of the spindle.
  • the pawl may simultaneously form the aforesaid first abutment on the adjustable member, and the cam piece can at the same time constitute the aforesaid part which turns with the spindle to operate the pawl.
  • FIG. 1 is a diagrammatic elevational view of the first embodiment
  • FIG. 2 is a section on the line II-II of FIG. 1,
  • FIGS. 3 and 4 are views similar to that of FIG. 1 but with the parts in changed positions
  • FIG. 5 is a diagrammatic elevation of a second embodiment of the invention.
  • FIG. 6 is another view of the second embodiment, taken from the righthand side of FIG. 5, and
  • FIGS. 7 and 8 are views similar to that of FIG. 5 but showing the parts in different positions.
  • FIGS. 1 to 4 can be used for the temporary locking of a spindle 1 after each two rotations. It comprises a guide plate .2' and a suction cup 3 which are stationary in relation to the axis of the spindle.
  • This spindle 1 may for example be the shaft of the roller in a hand towel dispenser over which the drawn off towel runs. In this event the spindle would be rotatably mounted in a side plate of the hand towel dispenser and the guide plate and the relatively-fixed suction cup 3 would be secured to this side plate.
  • Guide plate 2 has two pins 4 projecting into a slot in a member 5 which is thus guided for vertical movement on the guide plate 2.
  • Member 5 is biassed downwards by gravity and/ or spring means (not shown) into its starting or bottom position illustrated in FIG. 1, in which the upper pin 4 bears against the upper end of the slot in the member 5.
  • Member 5 carries a pawl 7 which is pivotable on a pin 6.
  • the lower edge of pawl 7 constitutes a first abutment for a cam piece 8 secured to spindle 1.
  • a second abutment 9 for cam piece 8 is provided on member 5 below pawl 7, that is to say behind the pawl in relation to the direction of movement of this member.
  • cam piece 8 contacts the second abutment 9 on member 5 and lifts the latter into the end position thereof depicted in FIG. 4.
  • a suction cup 12 secured to member :5 is pressed against the fixed complementary suction cup 3.
  • the pawl 7 is turned back by the inclined guide surface 10 into its vertical position (assuming that gravity is not sufficient to bring about this return pivoting movement).
  • cam piece 8 contacts an abutment surface 13 on member 5, lying in the path of the cam piece when member 5 has assumed its end position. This surface 13 prohibits further rotation of the spindle 1.
  • the predetermined lapse of time for which the suction cups 3 and 12 remain pressed together, and spindle 1 remains locked can, if required, be set by an adjustable air-inlet valve (not shown) in a manner which per se is known.
  • the spindle 1 is temporarily locked after each two complete rotations.
  • a releasable or adjustable limiting element can be provided which, in its efi ective position,
  • an arrangement can also be set up which will enable the spindle to be temporarily locked after three or more complete rotations.
  • three or more abutments for cam piece 8 would be arranged in succession on the adjustable member 5 and means provided for retaining this member in its various intermediate positions.
  • These latter means could moreover be such that the upper abutments are in the form of pawls, similar to pawl 7, which cooperate with the fixed guide plate abutment 11.
  • Also in a modification of this character limiting elements could, if desired, be provided to allow for the spindle to be temporarily locked optionally after a few or after a maximum number of rotations.
  • FIGS. 5 to 8 The embodiment of the arrangement according to the invention illustrated in .FIGS. 5 to 8 is in principle similar as regards construction and operation to the arrangement illustrated in FIGS. 1 to 4, with the exception that a pivotable member 25 is used instead of the verticallydisplaceable member 5.
  • the arrangement shown in FIGS. 5 to 8 is used for the temporary locking of a spindle 21 after each two rotations.
  • the spindle 21 may for example be that of a roller in a paper hand towel dispenser and be rotatably mounted in a side plate 22 (FIG. 6) of such a dispenser.
  • a suction cup 23 Secured to this plate 22, that is to say fixed in relation to the axis of spindle 21, are a suction cup 23, a pivot pin 24 and a stop pin 31 (FIGS. 5, 7, 8).
  • a member 25 Pivotally disposed on pin 24 is a member 25. This member is biassed to turn, by the action of a spring (not shown) applied against a projection 25a of member 25 to pull it downwards, to its starting or bottom position which is shown in FIG. 5 and in which an abutment part 29 thereof is applied against spindle 21.
  • a pawl 27 Pivoted on a pin 26 on member 25 is a pawl 27 in the form of a two-armed lever.
  • the righthand arm of the pawl lever 27 is substantially heavier than the lefthand arm so that the pawl is gravity-biassed in the clockwise direction until its right arm is applied against the abutment part 29 of member 25 (FIGS. 5 and 8).
  • the righthand arm of pawl 27 constitutes a first abutment for a cam piece 28 mounted on spindle 21, and the abutment part 29 on member 25 constitutes a second abutment for this cam piece 28, the second abutment 29 being arranged after the first abutment 27, as regarded in the direction of travel of member 25 (in the counterclockwise direction from the starting position shown in FIG. 5).
  • FIGS. 5 to 8 operate as follows: With all parts in the starting position shown in FIG. 5, spindle 21 is turned in the clockwise direction. Cam piece 28 strikes the righthand arm of pawl lever 27 in the course of the first rotation of spindle 21. As a result the pawl lever is first turned to a small amount in the counterclockwise direction until its lefthand arm bears against stop pin 31. The pawl lever 27 will then be lifted along with member 25, that is to say this latter will be pivoted around pivot pin 24 in the counterclockwise direction against its spring bias. Eventually the fixed stop pin 31 will be accommodated in a recess 27a in the end of the lefthand arm of pawl lever 27. This will prevent the pawl lever 27 and the member 25 dropping back when cam piece 28 has left the righthand end of the pawl lever; thus member 25 will be held in the intermediate position illustrated in FIG. 7 after one complete rotation of spindle 21.
  • cam piece 28 contacts the second abutment 29 on member 25 and raises the latter further until it reaches its end position illustrated in FIG. 8. This causes a suction cut 32, secured to member 25, to be pressed against the fixed suction cup 23. At the same time pawl 27 will rock back into its starting position under the action of gravity as soon as the lefthand arm thereof has left stop pin 31. Then, also in the course of the second rotation, cam piece 28 contacts an abutment part 33 on member 25 as shown in FIG. 8. As can there be seen, the abutment part 33 lies in the path of travel of cam piece 28, when the member 25 is in its end position. Thus abutment part 33 prohibits further rotation of spindle 21.
  • FIGS. to 8 can also be so set, if desired, that the spindle 21 will be held after each single rotation, instead of each two.
  • the member 25 can be retained in its intermediate position shown in FIG. 7 by means of an adjustable lever element in the form of a pivotal pawl member 2411 (which has been omitted in FIG. 6 so as not to confuse the drawing), whereby member 25 is prevented from returning into its bottom position shown in FIG. 5 and can only move from the intermediate position into the end position and back.
  • the pawl member 24a does not affect the remaining parts of the arrangement. If, however, this pawl member 24a is turned into the position thereof which has been indicated in dotted lines in FIG. 7, it then holds up member 25, as it falls back', in the intermediate position illustrated.
  • the spindle 21 can be locked selectively after each rotation or after each two rotations.
  • a cam piece connected to said spindle for moving said member from a starting position into an end position against the action of a biassing force, said member being adapted in said end position to stop said spindle;
  • a counter element cooperating with said suction cup in the end position of said member for holding the suction cup and member by suction during said predetermined period of time;
  • At least two abutments mounted on said member one behind another with respect to the direction of movement of the member, a first one of said abutments being arranged to engage said cam piece during a first revolution of said spindle, when said member is in said starting position, for moving the member into an intermediate position, and a last one of said abutments being arranged to engage said cam piece during a succeeding revolution of said spindle for moving the member into said end position to press said suction cup against said counter element;
  • a pawl cooperating with a stop means for retaining said member in said intermediate position, said pawl being movable into the effective range of said stop means concomitantly with the movement of said member into its intermediate position, and being movable out of this effective range concomitantly with the movement of the member into its end position.
  • Apparatus as claimed in claim 1 further comprising a limiting means which is movable from an ineffective position into an effective position for preventing restoration of said member from said intermediate position to said starting postion.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Supports Or Holders For Household Use (AREA)
US45021A 1969-06-24 1970-06-10 Apparatus for temporarily locking a spindle,particularly in a hand towel dispenser Expired - Lifetime US3613478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH963269A CH493247A (de) 1969-06-24 1969-06-24 Einrichtung zum vorübergehenden Blockieren einer Welle, insbesondere in einem Handtuchbahnausgeber

Publications (1)

Publication Number Publication Date
US3613478A true US3613478A (en) 1971-10-19

Family

ID=4354020

Family Applications (1)

Application Number Title Priority Date Filing Date
US45021A Expired - Lifetime US3613478A (en) 1969-06-24 1970-06-10 Apparatus for temporarily locking a spindle,particularly in a hand towel dispenser

Country Status (6)

Country Link
US (1) US3613478A (de)
CH (1) CH493247A (de)
DE (2) DE7021732U (de)
ES (1) ES381050A1 (de)
FR (1) FR2051231A5 (de)
GB (1) GB1307410A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3416718A1 (de) * 1983-06-24 1985-01-03 CWS AG, Baar Verfahren und vorrichtung zum einziehen von handtuchschlaufen und handtuchenden an einem stoffhandtuchspender

Also Published As

Publication number Publication date
CH493247A (de) 1970-07-15
FR2051231A5 (de) 1971-04-02
DE2028505A1 (de) 1971-01-14
DE7021732U (de) 1972-08-17
GB1307410A (en) 1973-02-21
ES381050A1 (es) 1972-11-01

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