Patent Publication Number: US-11395567-B2

Title: Automatic drop-down dispenser

Description:
CROSS REFERENCE 
     This application claims the priority benefit of U.S. Provisional Patent Application No. 62/825,641, filed Mar. 28, 2019, the entirety of which is incorporated by reference herein. 
    
    
     BACKGROUND 
     Field 
     This disclosure generally relates to an apparatus for dispensing consumable material, such as paper tissue from tissue rolls. 
     Description of Certain Related Art 
     Tissue dispensers provide a convenient storage system for rolls of consumable material. The rolls of consumable material can be referred to as “tissue rolls,” for example, rolls of fibrous paper products or tissue paper (e.g., bathroom tissue, paper towels, or other). Tissue dispensers are generally designed to hold one or multiple rolls of tissue paper and to provide a dispensing mechanism. The dispensing mechanism generally allows a user to retrieve a length of the roll. As one length of tissue paper is retrieved from the dispensing mechanism, an additional length becomes available for retrieval from the roll. This process slowly unrolls the length of the roll of tissue paper. 
     SUMMARY OF CERTAIN FEATURES 
     In some instances where a tissue dispenser holds multiple tissue rolls, for example, in a vertical configuration, it is often difficult for a user to access rolls above the bottommost roll even after the bottommost roll is exhausted. In some cases, when such bottommost roll is exhausted, a user must reach into an interior of the tissue dispenser to access additional rolls and/or must make manual adjustments to the tissue dispenser (or structure inside the tissue dispenser holding the rolls) in order to allow for access. Such techniques can not only be difficult, but can also present health concerns where users are required to touch the tissue rolls or structure holding the tissue rolls inside the interior of the dispenser. It would be beneficial to have a tissue dispenser that automatically provides access to an additional roll after a first roll is exhausted beyond a certain limit, without requiring additional action by a user. In addition to providing access to the additional roll, it would also be beneficial for the tissue dispenser to continue providing access to the first roll even after such roll is exhausted beyond a limit. 
     At least some of the aforementioned issues, or other issues, are overcome by various implementations of the solutions described herein. For example, one aspect of some implementations of a tissue dispenser described herein includes structural components that interact to automatically provide accessibility to a new tissue roll when a first tissue roll is exhausted or is near exhaustion. For example, in some implementations, when a first tissue roll is exhausted beyond a certain threshold (e.g., a diameter of the roll falls below a threshold), a new tissue roll held within the dispenser is automatically moved closer to an opening of the dispenser to provide accessibility to a user. As discussed herein, the tissue dispenser can include a mandrel for holding one or more tissue rolls (for example, vertically) and a sensor and/or controller (e.g., a lever). The sensor can be configured to detect whether a condition is satisfied, such as whether an outside diameter of a first tissue roll being detected to be below a threshold diameter. In some implementations, the controller can be configured to inhibit or prevent the mandrel from moving (e.g., closer to the opening of the dispenser) until the condition is satisfied, such as an outside diameter of a first tissue roll being at or below a threshold. 
     The preceding summary is meant to be a high-level summary of certain features within the scope of this disclosure. The summary, the following detailed description, and the associated drawings do not limit or define the scope of protection. The scope of protection is defined by the claims. No feature is critical or indispensable. 
     An apparatus for dispensing consumable material can comprise: a housing comprising a cabinet an interior, and an opening; a first support frame positioned within the interior of the housing and mounted to the cabinet; a second support frame positioned within the interior of the housing and mounted to the cabinet, the second support frame being spaced apart from the first support frame; and a mandrel positioned between the first support frame and the second support frame, the mandrel being movable between an upper position and a lower position relative to the first support frame and the second support frame. In some embodiments, the mandrel is configured to hold an upper roll of consumable material and a lower roll of consumable material, wherein when the mandrel is in the upper position the lower roll is accessible to a user via the opening of the housing, and when the mandrel is in the lower position the upper and lower rolls are accessible to the user via the opening. In some embodiments, the apparatus further comprises a lever operatively connected to the first support frame and moveable between a first position and a second position. In some embodiments, the lever is configured such that: when the lever is in the first position, a portion of the lever presents a physical interference that inhibits the mandrel from moving from the upper position to the lower position; and when the lever is moved to the second position, the physical interference is removed, thereby allowing the mandrel to move from the upper position to the lower position. 
     In some embodiments, the lever comprises a first arm and a second arm, and wherein, when the lever is in the first position, the first arm contacts the lower roll and the second arm presents the physical interference that inhibits the mandrel from moving from the upper position to the lower position. In some embodiments, when a diameter of the lower roll is greater than or equal to a threshold, the lower roll presents a physical obstacle to the first arm of the lever and prevents the lever from moving from the first position to the second position; and when the diameter falls below the threshold, the physical obstacle is removed, thereby allowing the lever to move from the first position to the second position. In some embodiments, the first arm of the lever is closer to the second support frame when the lever is in the second position than when the lever is in the first position. 
     In some embodiments, the mandrel comprises a first stem movably mounted to the first support frame, a second stem movably mounted to the second support frame, and a cross-member connected to and positioned between the first and second stems, and wherein the mandrel is configured to hold the upper and lower rolls between the first and second stems. In some embodiments, the first stem comprises a first flange, and wherein, when the lever is in the first position, the second arm of the lever contacts the first flange of the first stem. In some embodiments, the first support frame comprises a first channel extending along at least a portion of a first height of the first support frame; the second support frame comprises a second channel extending along at least a portion of a second height of the second support frame; the first stem is movably mounted within the first channel of the first support frame; and the second stem is movably mounted within the second channel of the second support frame. In some embodiments, the first stem comprises a first guide configured to fit within the first channel of the first support frame and the second stem comprises a second guide configured to fit within the second channel of the second support frame, and wherein the first and second guides are configured to allow the first and second stems to move within the first and second channels. In some embodiments, the first stem further comprises a first stub configured to secure to a first portion of the lower tissue roll and the second stem further comprises a second stub configured to secure to a second portion of the lower tissue roll, and wherein the first guide and the first stub extend from the first stem in opposite directions, and wherein the second guide and the second stub extend from the second stem in opposite directions. 
     In some embodiments, the lever is pivotably connected to the first support frame. In some embodiments, the lever is biased toward the second position. In some embodiments, the lever is connected to the first support frame via a pin and a torsional spring coupled to the pin, the torsional spring configured to bias the lever toward the second position. In some embodiments, the apparatus further comprises a cover that is movably mounted to the cabinet. 
     An apparatus for dispensing consumable material can comprise: a housing comprising a cabinet, an interior, and an opening; a first support frame positioned within the interior of the housing and mounted to the cabinet; a second support frame positioned within the interior of the housing and mounted to the cabinet, the second support frame being spaced apart from the first support frame; and a mandrel movably mounted to the first and second support frames and configured to hold an upper roll of consumable material and a lower roll of consumable material. In some embodiments, the mandrel is movable between an upper position and a lower position, and wherein, when the mandrel is in the upper position, only the lower roll is accessible to a user via the opening of the housing, and wherein, when the mandrel is in the lower position, the upper and lower rolls are accessible to the user via the opening of the housing. 
     In some embodiments, the apparatus further comprises a lever operatively connected to the first support frame and moveable between a first position and a second position, the lever configured such that: when the lever is in the first position, a portion of the lever presents a physical interference that inhibits the mandrel from moving from the upper position to the lower position; and when the lever is moved to the second position, the physical interference is removed, thereby allowing the mandrel to move from the upper position to the lower position. In some embodiments, the lever comprises a first arm and a second arm, and wherein, when the lever is in the first position, the first arm contacts the lower roll and the second arm presents the physical interference that inhibits the mandrel from moving from the upper position to the lower position. 
     In some embodiments, the mandrel comprises a first stem movably mounted to the first support frame, a second stem movably mounted to the second support frame, and a cross-member connected to and positioned between the first and second stems, and wherein the mandrel is configured to hold the upper and lower rolls between the first and second stems. In some embodiments, the first stem comprises a first flange, and wherein, when the lever is in the first position, the second arm of the lever contacts the first flange of the first stem. In some embodiments, the first support frame comprises a first channel extending along at least a portion of a first height of the first support frame, the second support frame comprises a second channel extending along at least a portion of a second height of the second support frame, the first stem is movably mounted within the first channel of the first support frame, and the second stem is movably mounted within the second channel of the second support frame. In some embodiments, the first stem comprises a first pair of guides and the second stem comprises a second pair of guides, and wherein the first pair of guides are configured to move within the first channel of the first support frame and the second pair of guides are configured to move within the second channel of the second support frame. In some embodiments, the apparatus further comprises a lever assembly comprising a controller arm and a sensor arm, the controller arm configured to disengage from the mandrel in response to the sensor arm detecting that an outside diameter of the lower roll is less than a threshold value, thereby allowing the mandrel to automatically drop from the upper position to the lower position. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Certain features of this disclosure are described below with reference to the drawings. The illustrated embodiments are intended to illustrate, but not to limit the embodiments. Various features of the different disclosed embodiments can be combined to form further embodiments, which are part of this disclosure. 
         FIGS. 1A-1C  illustrate various perspective views of a tissue dispenser. 
         FIG. 2A  illustrates a perspective view of the tissue dispenser where a cover of the tissue dispenser is open. 
         FIG. 2B  illustrates a perspective view of the cover of the tissue dispenser. 
         FIGS. 3A-3B  illustrate perspective views of the tissue dispenser with the cover removed. 
         FIGS. 4A-4B  illustrate perspective views of a portion of a cabinet of the tissue dispenser. 
         FIGS. 5A-5B  illustrate perspective views of the tissue dispenser with the cover and cabinet removed. 
         FIGS. 6A-6B  illustrate perspective views of a portion of the tissue dispenser in accordance with aspects of this disclosure. 
         FIGS. 7A-7B  illustrate perspective views of the support frames of the tissue dispenser. 
         FIGS. 8A-8B  illustrate views of a mandrel of the tissue dispenser. 
         FIGS. 8C-8E  illustrate enlarged views of portions of the mandrel of  FIGS. 8A-8B . 
         FIGS. 9A-9B  illustrate various perspective views of a lever and a lever assembly of the tissue dispenser. 
         FIG. 9C  illustrates an exploded perspective view of the lever assembly of  FIGS. 9A-9B . 
         FIG. 9D  illustrates a top view of the lever assembly of  FIGS. 9A-9B . 
         FIG. 10A  illustrates an enlarged view of a portion of one of the support frames shown in  FIG. 7A . 
         FIG. 10B  illustrates an additional perspective view of the portion of the support frame shown in  FIG. 10A . 
         FIG. 11A  illustrates an enlarged view of a portion of one of the support frames and lever assembly illustrated in  FIG. 6A . 
         FIG. 11B  illustrates an additional perspective view of the portion of the support frame and lever assembly shown in  FIG. 11A . 
         FIGS. 12A-12C  illustrate front views of a portion of the tissue dispenser and further illustrate the mandrel and lever moving between two positions in accordance with the aspects of this disclosure. 
         FIG. 13A  illustrates an enlarged view of a portion of the tissue dispenser shown in  FIG. 6B . 
         FIG. 13B  illustrates a top view of a portion of the tissue dispenser shown in  FIG. 12A . 
         FIGS. 14A-15B  illustrate views of a portion of the tissue dispenser in accordance with aspects of this disclosure. 
     
    
    
     DETAILED DESCRIPTION OF CERTAIN EMBODIMENTS 
     Various features and advantages of the disclosed technology will become more fully apparent from the following description of the several specific embodiments illustrated in the figures. These embodiments are intended to illustrate the principles of this disclosure. However, this disclosure should not be limited to only the illustrated embodiments. The features of the illustrated embodiments can be modified, combined, removed, and/or substituted as will be apparent to those of ordinary skill in the art upon consideration of the principles disclosed herein. 
     Overview 
       FIGS. 1A-1C  illustrate various perspective views of a dispenser  10 .  FIGS. 1A and 1C  illustrate front perspective views of the dispenser  10 , while  FIG. 1B  illustrates a back perspective view of the dispenser  10 . As discussed herein, the dispenser  10  can allow for dispensing of a roll of consumable material (also called a “tissue roll”), such as paper towels, toilet tissue, facial tissue, cleaning wipes, etc. In some variants, the dispenser  10  provides access to consumable material that is wound on a core and positioned within an interior of the dispenser  10 . The dispenser  10  can be a toilet paper dispenser, paper towel dispenser, facial tissue dispenser, wipes dispenser, or other type of dispenser capable of dispensing and/or providing access to consumable material. 
     As shown, the dispenser  10  can include a support portion, such as a cabinet  20 . An opening  12  can be bounded by or part of the cabinet  20 . As shown, one or more rolls of consumable material, such as tissue rolls  14 , can be held within an interior of the dispenser  10 , as described further below. 
     The dispenser can include a cover  30  that is connected with the cabinet  20 . With reference to  FIGS. 2A-2B and 1C , the dispenser  10  can include a latch  15  that allows the cover  30  to removably secure to the cabinet  20 . For example, the cover  30  can include a latching portion  38  ( FIG. 2B ) that can connect to the latch  15 . Further, with reference to  FIGS. 1C and 2A , the cover  30  can include one or more openings  33  sized to receive portions of a key  8  that can interact with the latch  15  and/or latching portion  38  to disengage the cover  30  from the cabinet  20 . With reference to  FIGS. 4A-4B , in some embodiments, the latch  15  is removably connected to a portion of the cabinet  20 , for example, to a latch housing  25  of the cabinet  20 . As shown in  FIG. 1B , the cabinet  20  can include one or more openings  23   a ,  23   b ,  23   c  configured to facilitate mounting of the dispenser  10  to a wall. For example, the one or more openings  23   a ,  23   b ,  23   c  can be sized and/or shaped to receive fasteners in order to assist in mounting the dispenser  10  to a wall. 
     In some embodiments, the cover  30  is movably connected to the cabinet  20 . For example, with reference to  FIGS. 2A-2B , the cover  30  can be rotatably coupled to the cabinet  20  such that, when the latching portion  38  is disengaged from the latch  15  of the cabinet  20 , the cover  30  can rotate with respect to the cabinet  20 . Such configuration can allow the cover  30  to be rotatably opened to allow access into the interior of the dispenser  10 . Such access can allow a user to insert one or more tissue rolls into the dispenser  10 , for example, via insertion of a mandrel  400  holding one or more tissue rolls into channels  210 ,  310  as discussed further below. As shown in  FIG. 2B , the cover can include a top portion  32 , which can include the latching portion  38 , a front (or back) wall  39 , and sidewalls  34   a ,  34   b . In some embodiments, the cover  30  can include a coupling portion  36  extending from and/or connected to a portion (e.g., a bottom) of the wall  39 . The coupling portion  36  can include one or more openings, such as two openings  37  ( FIG. 2B ) configured to receive protrusions on the cabinet  20  or another portion of the dispenser  10 . For example, with reference to  FIGS. 2B, 3A-3B, and 5A-5B , the openings  37  of the coupling portion  36  can receive protrusions  26   a ,  26   b  on support frames  100 ,  300  which also extend through openings in the cabinet  20 . Such configuration can allow the cover  30  to rotate while connected to the cabinet  20  between an open position (e.g.,  FIG. 2A ) and a closed position (e.g.,  FIGS. 1A-1C ). In some embodiments, the openings  37  are circular apertures and the protrusions  26   a ,  26   b  have a circular cross-section. 
       FIGS. 3A-3B  show views of the dispenser  10  with the cover  30  removed so as to better illustrate the interior of the dispenser  10 .  FIGS. 4A-4B  illustrate perspective views of the cabinet  20  with a portion thereof removed to better show features on a back surface  22  of the cabinet  20 . As discussed elsewhere herein, the dispenser  10  can include one or more support frames that connect to the cabinet  20  and/or the cover  30  and that act to support one or more tissue rolls and/or structure holding the one or more tissue rolls within the interior of the dispenser  10 . For example, as discussed in more detail below, the dispenser  10  can include one or more support frames  100 ,  200 , and/or  300  as shown in at least  FIGS. 3A-3B and 5A-5B . The support frames  100 ,  200 ,  300  can connect (for example, removably secure) to the cabinet  20 . With reference to  FIGS. 4A-4B , the cabinet  20  can include one or more flanges  26  extending outward from a surface  22  of the cabinet  20 . As shown, the flanges  26  can extend outward with respect to the surface  22  and extend in an additional direction (for example, “upward”). As also shown, the flanges  26  can define a space (or “open cavity”) sized to receive portions of the support frames  100 ,  200 ,  300  to enable securement of the same. For example, as shown in at least  FIGS. 5A-5B , the support frames  100 ,  200 ,  300  can include flanges  111 ,  211 ,  311 ,  113 ,  213 ,  313  that can secure within the open cavities defined by the flanges  26  in the cabinet  20 . In some variants, the cabinet  20  can include one or more pairs of protrusions  27  extending from the surface  22  of the cabinet  20  that form slots that are sized to receive one or portions of the support frames  100 ,  200 ,  300  to help secure the support frames  100 ,  200 ,  300  to the cabinet  20 . For example, with reference to at least  FIGS. 3A-3B and 5A-6B , the support frames  100 ,  200 ,  300  can include flanges  113 ,  213 ,  313 ,  115 ,  215 ,  315  that can secure within the slots defined by the protrusions  27 . Accordingly, the interaction of the flanges  26  and protrusions  27  of the cabinet  20  and the flanges  111 ,  211 ,  311 ,  113 ,  213 ,  313 ,  115 ,  215 ,  315  of the support frames  100 ,  200 ,  300  can allow the support frames  100 ,  200 ,  300  to secure to the cabinet  20 . Such securement can prevent horizontal and/or vertical movement of the support frames  100 ,  200 ,  300  relative to the cabinet  20  in some embodiments. 
     Support Frames 
       FIGS. 5A-5B  show the dispenser  10  with the cabinet  20  and cover  30  removed to better illustrate the support frames  100 ,  200 ,  300  and other aspects of the tissue dispenser  10 . As shown, the dispenser  10  can include the support frames  100 ,  200 ,  300 , mandrels  400 , and levers  502 . As discussed in more detail below, the mandrels  400  can hold one or more rolls of consumable material (such as tissue rolls  14 ) and can be movably secured to the support frames  100 ,  200 ,  300 . As also discussed in more detail below, the levers  502  can be movably secured to the support frames  100 ,  300  and can interact with the mandrels  400  to at least partially inhibit (e.g., prevent) movement of the mandrels  400 , for example, from an upper position to a lower position. 
     While  FIGS. 1A-1C, 2A, 3A-3B, and 5A-5B  illustrate the dispenser  10  having three support frames  100 ,  200 ,  300 , which form two vertical “bays” that can receive one or more tissue rolls (e.g., vertically), the dispenser  10  can include an alternative number of support frames  100 ,  200 ,  300  and/or combinations of the support frames  100 ,  200 ,  300  which form an alternative number of bays. For example, depending on the desired configuration for the dispenser  10 , the dispenser  10  can include a single bay formed by one support frame  100  and one support frame  200  or formed by one support frame  200  and one support frame  300 . Moreover, the number of mandrels  400  and levers  502  can be altered depending on the number of support frames  100 ,  200 ,  300 . The amount and configuration of the support frames  100 ,  200 ,  300  and/or combinations thereof can be altered to achieve a desired amount of bays for the dispenser  10 . Accordingly, while the discussion below is made with reference to a single “bay” dispenser including the support frames  200  and  300 , the features of the support frames  200 ,  300  can be applicable in some or every respect to support frame  100  and/or to a dispenser including all of support frames  100 ,  200 ,  300 , two mandrels  400 , and two levers  502 . Moreover, the cabinet  20 , cover  30 , and opening  12  can be modified depending on the number of support frames  100 ,  200 ,  300  employed in the dispenser  10 . 
       FIGS. 6A-6B  illustrate a mandrel  400  positioned within a vertical “bay” within the support frames  200 ,  300  and further illustrate a lever assembly  500 , secured to the support frame  300 .  FIGS. 7A-7B  illustrate the support frames  200 ,  300  independent of the mandrel  400  and lever  502 .  FIGS. 8A-8E  illustrate the mandrel  400  (and portions thereof) and  FIGS. 9A-9C  illustrate the lever  502  and a lever assembly  500  that can connect the lever  502  to the support frame  300 . As discussed above, the support frames  200 ,  300  can include flanges, such as flanges  211 ,  213 ,  311 ,  313 ,  215 ,  315  that can secure to portions of the cabinet  20 . 
     As discussed above, the mandrel  400  can be configured to hold one or more rolls of consumable material. As also discussed, the mandrel  400  can be movably connected to the support frames  200 ,  300 . In some embodiments, a first (e.g., lower) roll is initially accessible by a user and movement of the mandrel  400  relative to the support frames  200 ,  300  can make a second (e.g., upper) roll accessible by the user. The support frames  200 ,  300  can include channels extending along some or all of the heights thereof. The channels can be sized and/or shaped to receive portions of the mandrel  400  to allow the mandrel  400  to move (e.g., slide) therewithin. 
     For example, as shown in  FIGS. 7A-7B , the support frames  200 ,  300  can include channels  210 ,  310  extending along portions of heights thereof. In some embodiments, one or more of the channels are bound by protrusions. As shown, the channel  210  can be bound by rails protruding outward from a surface  201  of the support frame  200 . In some embodiments, one or more of the channels are recessed in the support frame  300 . For example, the channel  310  can be recessed from a surface  301   a  of the support frame  300 . Some variants include a combination. For example, as shown, the channel  310  can be recessed from a surface  301   a  of the support frame  300  (see  FIG. 7B ) and can protrude outward from a second, opposite surface  301   b  of the support frame  300  (see  FIG. 7A ). 
     As shown in  FIGS. 7A-7B , the channels  210 ,  310  can extend along a portion of heights of the support frames  200 ,  300 . In some embodiments, the channels  210 ,  310  extend in a direction parallel to heights of the support frames  200 ,  300  (e.g., in a vertical direction) and extend in directions transverse (e.g., angled) relative to such parallel direction. For example, the channels  210 ,  310  can include generally vertical and/or straight portions  210   b ,  310   b  and angled portions  210   a ,  310   a  at or near ends thereof (e.g., at “top” ends). With reference to  FIGS. 2A and 7A-7B , such angled portions  210   a ,  310   a  can be angled with respect to the straight portions  210   b ,  310   b  towards a “front” end of the dispenser  10 , which can advantageously allow a user to more easily insert a mandrel  400  or portions thereof (e.g., the guides  412   a - 412   d ) into the channels  210 ,  310  of the support frames  200 ,  300  to fill or refill the dispenser  10  with tissue rolls. The angled portions  210   a ,  310   a  can be angled with respect to the straight portions  210   b ,  310   b  at a degree equal to about: 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, or 90°, or any value therebetween, or any range bounded by any combination of these values, although values outside these ranges can be used in some cases. 
     In some embodiments, the channels  210 ,  310  include a widened entrance, which can advantageously provide for easier installation of the mandrel  400  or portions thereof into the channels  210 ,  310 . For example, as shown in at least  FIGS. 7A-7B , the channels  210 ,  310  can include angled or flared portions  210   d ,  310   d . The flared portions  210   d ,  310   d  can be angled (e.g., “flared outward”) with respect to the angled portions  210   a ,  310   a . Such configuration can help guide and/or align portions of the mandrel  400  (for example, the guides  412   a - d ) into the channels  210 ,  310 . 
     As shown in  FIGS. 7A-7B , the channels  210 ,  310  of the support frames  200 ,  300  can include angled portions  210   c ,  310   c  at or near ends thereof (e.g., at “bottom” ends). Such angled portions  210   c ,  310   c  can be angled with respect to the straight portions  210   b ,  310   b  towards a “back” end of the tissue dispenser  10 . Advantageously, such configuration can allow the mandrel  400  to move relative to the support frames  200 ,  300  (e.g., downward) closer to an opening of the dispenser  10  (such as opening  12 ) while reducing or minimizing the overall height of the dispenser  10  that would be required if the channels  210 ,  310  were oriented vertically. In some embodiments, such configuration, can allow a first (e.g., lower) tissue roll to be moved at least partially out of the way when at or near exhaustion so that a second (e.g., upper) tissue roll can be moved closer to the opening  12  of the dispenser  10 . This in turn can provide better access to the second (upper) tissue roll for a user. The angled portions  210   c ,  310   c  can be angled with respect to the straight portions  210   b ,  310   b  at a degree equal to about: 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, or 90°, or any value therebetween, or any range bounded by any combination of these values, although values outside these ranges can be used in some cases. 
     The support frames  200 ,  300  can include a stop that inhibits or prevents the mandrel  400  from moving relative to the support frames  200 ,  300  beyond a limit. For example, as shown in  FIGS. 7A-7B , the support frames  200 ,  300  can include a flange  220 ,  320  extending from surfaces  201 ,  301   a  at or near bottom ends of the channels  210 ,  310 . In some embodiments, the flanges  220 ,  320  extend generally perpendicular to surfaces  201 ,  301   a  and/or to the channels  210 ,  310 . The flanges  220 ,  320  can block portions of the mandrel  400  from passing through the bottom ends of the channels  210 ,  310 . For example, the flanges  220 ,  320  can block one or more of the guides  412   a - 412   d  from exiting through the bottom ends of the channels  210 ,  310 . In some embodiments, the flanges  220 ,  320  are generally T-shaped (see  FIG. 7A-7B ). 
     Mandrel 
       FIGS. 8A-8E  illustrate views of the mandrel  400  and portions thereof. The mandrel  400  can include a first stem  410 , a second stem  420 , and a cross-member  430  extending between and connected to the first and second stems  410 ,  420 . In some embodiments, the cross-member  430  is generally perpendicular to the first stem  410  and/or second stem  420 . In some embodiments, the first and second stems  410 ,  420  are generally parallel to one another. As illustrated, in some embodiments, the mandrel  400  is generally H-shaped. 
     The mandrel  400  can include one or more elements (e.g., protrusions) configured to secure and/or secure to rolls of consumable material (e.g., tissue rolls). For example, as shown in  FIGS. 8A-8B , the mandrel  400  can include one or more stubs  414   a ,  414   b ,  414   c ,  414   d  which extend from portions of the stems  410 ,  420  and which can secure and/or secure to tissue rolls. The first stem  410  can include a first stub  414   a  extending from a portion of the first stem  410  and/or a second stub  414   b  extending from another portion of the first stem  410 . The first stub  414   a  can be positioned at or near a first end of the first stem  410  and the second stub  414   b  can be positioned at or near a second end of the first stem  410 . In some embodiments, one or both of the first or second stubs  414   a ,  414   b  can be positioned a distance away from the ends of the first stem  410 . The first and second stubs  414   a ,  414   b  can extend from the same side of the first stem  410  in a direction towards the second stem  420 , for example. The second stem  420  can include a first stub  414   c  extending from a portion of the second stem  420  and/or a second stub  414   d  extending from another portion of the second stem  420 . The first stub  414   c  can be positioned at or near a first end of the second stem  420  and the second stub  414   d  can be positioned at or near a second end of the second stem  420 . In some embodiments, one or both of the first or second stubs  414   c ,  414   d  can be positioned a distance away from the ends of the second stem  420 . The first and second stubs  414   c ,  414   d  can extend from the same side of the second stem  420  in a direction towards the first stem  410 , for example. 
     The stubs  414   a ,  414   b ,  414   c ,  414   d  can be configured to secure to tissue rolls having a “core” and/or “coreless” tissue rolls. In some embodiments, the stubs  414   a ,  414   b ,  414   c ,  414   d  are sized and/or shaped to fit within a core of a tissue roll, for example, within a cylindrical hollow paperboard core of a tissue roll. In some configurations, the stubs  414   a ,  414   b ,  414   c ,  414   d  can extend from surfaces of the stems  410 ,  420  and have ends that are sized to be received within ends of the paperboard core of the tissue roll. In some embodiments, the stubs  414   a ,  414   b ,  414   c ,  414   d  are sized and/or shaped to engage (for example, grip) sides or ends of coreless tissue rolls. For example, in some embodiments, the stubs  414   a ,  414   b ,  414   c ,  414   d  extend from surfaces of the stems  410 ,  420  and have ends which are tapered, pointed, or otherwise shaped to grip (or stick into) ends of the coreless tissue rolls. In some embodiments, the stubs  414   c ,  414   a  are aligned (e.g., vertically) with one another and/or stubs  414   d ,  414   b  are aligned (e.g., vertically) with one another (see  FIG. 7B ). 
       FIGS. 8C-8E  illustrate enlarged views of the stub  414   b , however, the features and description that follow can also be applicable to any of the stubs  414   a ,  414   d ,  414   c  and/or the first and second stems  410 ,  420 . With reference to  FIG. 8E , the stub  414   b  can include a base portion  430  extending from and/or connected to the first stem  410  and an engagement portion  440  extending from and/or connected to the base portion  430 . The base portion  430  can include a plate  430   a  and one or more flange supports  430   b  that connect the plate  430   a  to the first stem  410 . In some embodiments, the base portion  430  includes four flange supports  430   b  arranged in cross-shaped pattern. The engagement portion  440  can include a plate  440   a  and one or more flange supports  440   b  that connect the plate  440   a  to the plate  430   a  of the base portion  430 . In some embodiments, the engagement portion  440  includes four flange supports  440   b  arranged in cross-shaped pattern. The engagement portion  440  can be sized and/or shaped to fit within a core of a tissue roll. In some embodiments, the plate  440   a  of the engagement portion  440  comprises a circular shape. In some embodiments, the plate  430   a  of the base portion  430  has a larger size and/or shape (e.g., a larger cross-section) than the plate  440   a  of the engagement portion  440 . Such configuration can allow an end (for example, a cylindrical end) of a core of a tissue roll to rest against the plate  430   a  after passing over the engagement portion  440 . In some embodiments, the plate  430   a  of the base portion  430  comprises a circular or partially circular shape. For example, with reference to  FIG. 8D  (as discussed in more detail below), the plate  430   a  can have a partially circular shape with two opposing straight sides  430   c . As discussed further below, the straight sides  430   c  can advantageously allow a portion of the lever  502  (such as the first arm  510  of the lever  502 ) to sit adjacent to (e.g., “flush” with) and/or spaced from the base portion  430  (and/or plate  430   a ) which can minimize or eliminate interference between the lever  502  and the plate  430   a  when the lever  502  moves. 
     As discussed above, the mandrel  400  can be movably connected to the support frames  200 ,  300 . As also discussed above, the mandrel  400  (and/or portions thereof) can be received within the channels  210 ,  310  of the support frames  200 ,  300 , which allow the mandrel  400  to be moved, for example, vertically, with respect to the support frames  200 ,  300 . The mandrel  400  can include one or more protrusions sized and/or shaped to fit within the channels  210 ,  310  of the support frames  200 ,  300  and which are configured to move (e.g., slide) within such channels  210 ,  310 . For example, as shown in  FIGS. 8A-8B , the mandrel  400  can include guides  412   a ,  412   b ,  412   c ,  412   d  which can be sized and/or shaped to fit within the channels  210 ,  310 . 
     As shown, the first stem  410  can include a first guide  412   a  extending from a portion of the first stem  410  and/or a second guide  412   b  extending from another portion of the first stem  410 . The first guide  412   a  can be positioned at or near a first end of the first stem  410  and the second guide  412   b  can be positioned at or near a second end of the first stem  410 . In some embodiments, one or both of the first or second guides  412   a ,  412   b  can be positioned a distance away from the ends of the first stem  410 . The first and second guides  412   a ,  412   b  can extend from the same side of the first stem  410  in a direction away from the second stem  420 , for example. The guides  412   a ,  412   b  can extend from the first stem  410  in a direction opposite to the direction of extension of the stubs  414   a ,  414   b  discussed above. In some embodiments, the guides  412   a ,  412   b  are aligned (e.g., vertically) with the stubs  414   a ,  414   b  (see  FIG. 8B ). 
     As also shown, the second stem  420  can include a first guide  412   c  extending from a portion of the second stem  420  and/or a second guide  412   d  extending from another portion of the second stem  420 . The first guide  412   c  can be positioned at or near a first end of the second stem  420  and the second guide  412   d  can be positioned at or near a second end of the second stem  420 . In some embodiments, one or both of the first or second guides  412   c ,  412   d  can be positioned a distance away from the ends of the second stem  420 . The first and second guides  412   c ,  412   d  can extend from the same side of the second stem  420  in a direction away from the first stem  410 , for example. The guides  412   c ,  412   d  can extend from the second stem  420  in a direction opposite to the direction of extension of the stubs  414   c ,  414   d  discussed above. In some embodiments, the guides  412   c ,  412   d  are aligned (e.g., vertically) with the stubs  414   c ,  414   d  (see  FIG. 8B ). 
     As discussed above, the guides  412   a ,  412   b ,  412   c ,  412   d  can be sized and/or shaped to fit within the channels  210 ,  310 . In some embodiments, the “free” ends of the guides  412   a ,  412   b ,  412   c ,  412   d  are rounded and/or have circular cross-sections. Such configuration can help the guides  412   a ,  412   b ,  412   c ,  412   d  (and in turn, the mandrel  400 ) more easily move (e.g., slide) within the channels  210 ,  310 . Such configuration can also more easily allow the mandrel  400  to move within and/or transition between the angled portions  210   a ,  310   a ,  210   c ,  310   c  and the straight portions  210   b ,  310   b .  FIGS. 8C-8E  illustrate enlarged views of the guide  412   b , however, the features described with reference to these figures can be equally applicable to the guides  412   a ,  412   c ,  412   d  and first and second stems  410 ,  420 . As shown, in some embodiments, the guide  412   b  includes a base portion  423   a  connected to and extending from the first stem  410  and an engagement portion  423   b  connected to and extending from the base portion  423   a . In some embodiments, the engagement portion  423   b  comprises a smaller cross-section than the base portion  423   a . Such configuration can allow an end of the base portion  423   a  to sit against edges of the channels  210 ,  310  when the engagement portion  423   b  is positioned within the channels  210 ,  310 . In some embodiments, the base portion  423   a  is supported by one or more flanges  423   c  extending from the first stem  410  and connected to the base portion  423   a.    
     The mandrel  400  can include one or more of flanges  416 . As shown, the mandrel  400  can include a plurality of flanges, such as eight  416   a - 416   h . Other numbers of flanges are contemplated, such as one, two, three, four, five, six, seven, or more. The flanges  416  can extend from the stems  410 ,  420  of the mandrel  400 . In some embodiments, the flanges  416  comprise a triangular shape (such as a right-triangular shape). The flanges  416   a - 416   h  can extend outward from the stems  410 ,  420  and/or along side edges of the stems  410 ,  420 . In some embodiments, the flanges  416  are spaced outward from an interior of the stems  410 ,  420 . For example, the flanges  416  can be positioned along side edges of stems  410 ,  420  and spaced outward from the one or more guides  412   a - 414   d  (see  FIG. 8A ). Such positioning advantageously allows the flanges  416  to be positioned outward from the channels  210 ,  310  of the support frames  200 ,  300  so as to not interfere with the mandrel&#39;s  400  ability to move along the channels  210 ,  310  (see, e.g.,  FIGS. 6A-6B ). 
     In some embodiments, the mandrel  400  is configured to facilitate engagement with the support frame  300 . For example, in some embodiments, the mandrel  400  is configured to be received in the support frame  300  in the orientation shown in  FIG. 8B , or rotated 180 degrees about a vertical axis, or rotated 180 degrees about a horizontal axis. In certain variants, the mandrel  400  and/or the arrangement of the flanges  416  is symmetrical about a vertical axis and/or a horizontal axis. In some implementations, the mandrel  400  includes the flanges  416   a - 416   h . Such configuration can ensure that at least one of the flanges  416   a - 416   h  interacts with the lever  502  regardless of the direction and/or orientation that the mandrel  400  is installed in the channels  210 ,  310  of the supports frames  200 ,  300 . In some implementation, the dispenser  10  has more flanges  416  than mandrels  400  and/or levers  502 , such as a single lever  502  and a mandrel  400  with a plurality of the flanges  416 . 
     As will be discussed in more detail below, the one or more flanges  416  can be configured to engage (e.g., contact) the lever  502  when the lever  502  is in a first position or mode (e.g., rotational position). In various embodiments, the engagement between the lever  502  and the flange  416  of the mandrel  400  provides a physical interference that stops the mandrel  400  from sliding from an upper position to a lower position, relative to the support frames  200 ,  300  and/or the opening  12 . 
     Lever Assembly 
     As mentioned above, and with reference to  FIGS. 9A-9C , the dispenser  10  can include a lever assembly  500 . The lever assembly  500  can be configured to interact with the mandrel  400  to control movement of the mandrel  400  with respect to the support frames  200 ,  300 . For example, as discussed in more detail below, in a first mode, the lever assembly  500  can be configured to at least partially inhibit (or prevent) movement of the mandrel  400  with respect to the support frames  200 ,  300  and in a second mode, the lever assembly  500  can be configured to permit movement of the mandrel  400  with respect to the support frames  200 ,  300 . For example, in the first mode, the lever assembly  500  can inhibit movement of the mandrel  400  along the channels  210 ,  310  of the support frames  200 ,  300 . 
     The lever assembly  500  can include a pin  501 , a lever  502 , and/or a biasing member  503 . The pin  501  and the biasing member  503 , and the discussion that follows related to these components, are an illustrative mechanism for coupling the lever  502  to the support frame  300 . However, this mechanism is not intended to be limiting. The lever  502  can be secured (e.g., movably) to the support frame  300  via a different mechanism or technique and still interact with the mandrel  400  and/or tissue rolls secured thereto in the same or similar manner as that described below. 
     As shown, the lever  502  can include a first arm  510 , a second arm  508 , and a body  504 . The arms  508 ,  510  can be rigidly connected and/or configured to move as a unit. As discussed in more detail below, the first arm  510  can be a sensor and/or the second arm  508  can be a controller. For example, the first arm  510  can be configured to contact a side or end of a tissue roll coupled to the mandrel  400  and to detect a characteristic of the tissue roll, such as outside diameter. As another example, the second arm  508  can be configured to engage or disengage a portion of the mandrel  400  to control movement of the mandrel  400 , such as between an upper and lower position. The lever  502  can include an opening  505 . The opening  505  can be a recess or through-hole that is sized and/or shaped to receive the pin  501 . 
     In some embodiments, the lever  502  includes a flange  512  (see  FIGS. 9B-9D ). As illustrated, the flange  512  can have an angled and/or cantilevered end. As shown by at least  FIG. 9D  which illustrates a top view of the lever assembly  500 , the flange  512  (or a portion thereof) can be offset from the arm  508 . For example, in some variants, a width of the flange  512  is offset from a width of the arm  508 . In some variants, an end or edge of the flange  512  is spaced from an end of edge of the arm  508  by a distance d 1  (see  FIG. 9D ). In some variants, the distance d 1  is sized to accommodate a width of one of the flanges  416  of the mandrel  400  (e.g., flange  416   d  of mandrel  400 ). For example, the distance d 1  can be greater than or equal to a width of one or more of the flanges  416  of the mandrel  400  (for example, greater than or equal to a width of flange  416   d ). Incorporating an offset from an end or edge of the flange  512  from an end of edge of arm  508  (see  FIG. 9D ) can advantageously allow the flange  512  to not interfere with one or more of the flanges  416  of the mandrel  400  (e.g., the flange  416   d ) when the mandrel  400  is moving within at least a portion of the channels  310  (e.g., within the straight portion  310   b  of the channel  310 ). Additionally, as discussed further below with reference to  FIGS. 14A-15B , by engaging one of the flanges  416  of the mandrel  400  when the mandrel  400  moves within the angled portion  310   c , the flange  512  can help the lever  502  move so that the arm  510  does not interfere with an upper tissue roll (such as upper tissue roll  2 ). For example, as discussed further below, by contacting the flange  416   b  when the mandrel  400  moves through the angled portion  310   c  of the channel  310 , the flange  512  can advantageously cause the lever  502  to move (e.g., rotate) so that the arm  510  does not contact a portion of the upper tissue roll  2 . 
       FIGS. 10A-11B  illustrate the connection between the lever assembly  500  and the support frame  300 .  FIGS. 10A-10B  illustrate an enlarged portion of the support frame  300  shown in  FIG. 7A  (the lever assembly  500  is not shown in these figures). The support frame  300  can include an opening  370 , such as a through hole. The frame  300  can include a lip  371  extending from the surface  301   b  of the support frame  300  along an end (or on “top”) of the opening  370 , and/or sidewalls  372   a ,  372   b  extending from the surface  301   b  along sides of the opening  370 . The sidewalls  372   a ,  372   b  can include openings  373   a ,  373   b  at or near ends thereof. The openings  373   a ,  373   b  can be at least partially shaped to receive the pin  501  of the lever assembly  500 . The support frame  300  can include walls  376   a ,  376   b  extending from the surface  301   b  adjacent the sidewalls  372   a ,  372   b  (for example, positioned outside the sidewalls  372   a ,  372   b ). The walls  376   a ,  376   b  can include recessed portions that are sized and/or shaped to generally conform to a size and/or shape of the pin  501  of the lever assembly  500 . In some embodiments, the openings  373   a ,  373   b  comprise an arch-shape ( FIGS. 10A-10B ). In some embodiments, the walls  376   a ,  376   b  comprise an arch-shape ( FIGS. 10A-10B ). 
       FIGS. 11A-11B  illustrate the same enlarged portion of the support frame  300  shown in  FIGS. 10A-10B  with the lever assembly  500  secured thereto. As shown, the pin  501  can extend through the opening  505  in the body  504  of the lever  502 , through the openings  373   a ,  373   b , and can fit at least partially in the space defined by the recessed portions of the walls  376   a ,  376   b . In some embodiments, the opposing arch-shapes of the walls  376   a ,  376   b  and the openings  373   a ,  373   b  restrict movement of the pin  501  in a direction perpendicular to the surface  301   b  of the support frame  300 . With reference to  FIGS. 9A-9C and 11B , the pin  501  can include a resilient, two-pronged tip  501   c  with a tapered end that is configured to contract upon insertion through openings  373   a ,  373   b  and the recessed portion of walls  376   a ,  376   b  and expand thereafter to lock the pin  501  in place (e.g., horizontally) against a surface of the wall  376   b . The pin  501  can include a head  501   a  having a greater cross-section than a body  501   b  of the pin  501  to also restrict horizontal movement of the pin  501  via contact against a surface of the wall  376   a.    
     When secured to the support frame  300  as discussed above, the lever  502  can rotate with respect to the support frame  300 , for example, about an axis extending through the pin  501 . The biasing member  503  can be provided to help bias the lever  502  to a neutral (e.g., “unstressed” or “resting”) position with respect to the support frame  300 . In some embodiments, the biasing member  503  is a spring, such as a torsional spring. The biasing member  503  can be positioned around the pin  501  and can engage a portion of the support frame  300  and a portion of the lever  502 . For example, an end of the biasing member  503  can be configured to engage the lip  371  which extends from the surface  301   b  along the opening  370  and can also engage a portion of the body  504  of the lever  502  (see  FIGS. 11A-11B ). In some embodiments, the biasing member  503  can bias the lever  502  towards the neutral position, such that, if a force is applied to the lever  502  (such as to the first arm  510  of the lever  502 ) to move the lever  502  from this neutral position, a force (e.g., spring force) is imposed on the biasing member  503 . As discussed in more detail below, such induced biasing force can advantageously cause the lever  502  to move back to its neutral position so that the second arm  508  of the lever  502  does not inhibit the mandrel  400  from moving (e.g., vertically) to a lower position. Such biasing can allow the lever  502  to automatically move back to its neutral position, thus allowing the mandrel  400  to, in turn, automatically drop down to provide access to an upper tissue roll held by the mandrel  400 . 
     As shown in  FIGS. 11A-11B , the support frame  300  can include a guide flange  378  extending from the surface  301   b  of the support frame  300  which can help alignment of the lever  502  within the openings  370  and/or  360  during assembly along with the pin  501  and the biasing member  503 . In some embodiments, the guide flange  378  is generally T-shaped. As also shown, the opening  360  in the support frame  300  can be sized and/or shaped to allow the first arm  510  of the lever  502  to pass and/or move therethrough. In some variants, the guide flange  378  can advantageously help control a movement and/or rotation of the lever  502  so as to maintain a minimal clearance between the first arm  510  of the lever  502  and the straight sides  430   c , which is discussed elsewhere herein (e.g., see discussion with reference to  FIGS. 13A-13B ). 
     Operation of the Dispenser 
       FIGS. 12A-12C  illustrate an embodiment of the dispenser  10  in various modes of operation. For example, these figures illustrate how the mandrel  400  can move (e.g., “automatically”) between the upper and lower positions with respect to the support frames  200 ,  300 , for example, within the interior of the dispenser  10 . In  FIGS. 12A-12C , (front) portions of the support frames  200 ,  300  are shown in dotted lines to better illustrate the mandrel  400 , lever  502 , and portions thereof. 
       FIG. 12A  illustrates a first mode of operation of the dispenser  10 , such as near the time the dispenser  10  was stocked with two full tissue rolls, a lower roll  1  and an upper roll  2 . This figure illustrates a front view of the support frames  200 ,  300 , the lever  502  (secured to the support frame  300  as described above), the mandrel  400 , and lower and upper tissue rolls  1 ,  2  secured to the mandrel  400  (for example, secured to and/or between stubs  414   a ,  414   b ,  414   c ,  414   d ). When the lower tissue roll  1  is positioned as shown in  FIG. 12A , the lower tissue roll  1  (e.g., due to its outside diameter and/or axial length) can push the lever  502  away from its neutral (e.g., biased) position. In such position, the first arm  510  of the lever  502  can contact an end of the lower tissue roll  1  and the second arm  508  of the lever  502  can contact (and, for example, physically block) a portion of the mandrel  400 , such as the flange  416   c  where the mandrel  400  is oriented as shown in  FIGS. 8A-8B . In the embodiment illustrated, the flange  416   c  is blocked, but other embodiments and/or orientations of the mandrel  400  can block other flanges. 
     As the lower tissue roll  1  is used (e.g., dispensed to users), its outside diameter decreases. This, in turn, allows the first arm  510  to move inward (e.g., in a direction towards the support frame  200 ) and allows the lever  502  to move to its neutral (e.g., biased) position. Movement of the first arm  510  in such manner can cause the second arm  508  to move relative to the flange  416 , such as toward the right in the illustrated embodiment. The second arm  508  can move (e.g., slide) toward a position out of engagement with the flange  416 . 
     In certain embodiments in which the lever  502  is rotatably secured to the support frame  300  (for example, via the pin  501  and the biasing member  503 ), exhaustion of a diameter of the lower tissue roll  1  beyond a given threshold removes the physical obstacle resulting from the presence of the lower tissue roll  1  adjacent the first arm  510 , which allows the lever  503  to rotate to its neutral position defined by the biasing member  503 . Such exhaustion of the diameter of the roll  1  beyond the threshold thus also removes the physical interference resulting from the location of the second arm  508  relative to the flange  416   d . Such movement of the lever  502  can remove the second arm  508  from a path (e.g., a generally vertical path) of the flange  416   d.    
     Eventually, through continued dispensation, the lower roll  1  becomes so small so that the second arm  508  moves completely out of engagement with the flange  416 .  FIG. 12B  illustrates this intermediate position of the mandrel  400  at the moment when the physical interference caused by the second arm  508  is removed. As shown, in some embodiments, as the second arm  508  moves (e.g., rotates) out of the way of the flange  416   d , the second arm  508  can push the flange  416   d  (and thus the mandrel  400 ) slightly upward, which can be seen by a comparison of the vertical position of the mandrel  400  in  FIGS. 12A and 12B . 
     After the second arm  508  is moved away from (e.g., out of a movement path of) the flange  416   d , the mandrel  400  can move to a lower position, as illustrated in  FIG. 12C . For example, the mandrel  400  can automatically move (e.g., drop generally vertically, such as due to gravity) downward. When the mandrel  400  is in the lower position ( FIG. 12C ), the upper tissue roll  2  can be accessible (or more accessible) to a user, for example, via the opening  12  of the dispenser  10 . In some embodiments, when the mandrel  400  is in the lower position, guides of the mandrel  400  (such as guides  412   b ,  412   d ) are positioned within the angled portions  210   c ,  310   c  of the channels  210 ,  310  of the support frames  200 ,  300  and/or adjacent to flanges  220 ,  320 . 
     As discussed above, movement of the mandrel  400  from the upper position to the lower position can be initiated or occur when a condition is satisfied. The condition can be that the lower tissue roll  1  is exhausted a certain amount, for example, when a diameter of the lower tissue roll  1  falls below a given threshold (e.g., less than approximately 25 mm). In various embodiments, the condition is satisfied before the lower roll  1  is completely exhausted. The mostly, but not completely, exhausted lower roll can be called a “stub roll.” In certain implementations, the dispenser  10  is configured to dispense and/or allow a user to access the stub roll  1  and the upper roll  2 , such through the opening  12 . 
     In some implementations, the mandrel  400  can be configured to facilitate movement relative to the lever assembly  500 . For example, the stubs  414   d  and  414   b  of the mandrel  400  can be configured to ease passage of the mandrel  400  past the arm  510 . In some cases, when the lever  502  is secured to the support frame  300  as discussed above, the first arm  510  of the lever  502  is positioned adjacent the stub  414   b  of the mandrel  400  (see FIGS.  13 A- 13 B). In some such cases, when a cross-sectional area of the lower tissue roll  1  is depleted an amount such that it is equal to or less than a cross-sectional area of the stub  414   b  (or a portion thereof), the lower tissue roll  1  can cease to block the first arm  510  and the first arm  510  can move (e.g., rotate) as discussed above. For example, with reference to  FIG. 8D , where the stub  414   b  includes the base portion  430 , when a diameter of the lower tissue roll  1  is equal to or less than the width w 1  between sides  430   c  of the plate  430   a  of the base portion  430 , the first arm  510  of the lever  502  can move to the neutral position as discussed above. As another example, with continued reference to  FIG. 8D , where the stub  414   b  includes the plates  430   a ,  440   a , and the one or more stems  440   b , when a diameter of the lower tissue roll  1  is between widths w 1 , w 3  or between widths w 1  and w 2 , the first arm  510  of the lever can move to the neutral position as discussed above. As discussed above with reference to  FIG. 8D , in some embodiments, the plate  430   a  of the base portion  430  includes straight sides  430   c  that can allow the first arm  510  of the lever  502  to sit adjacent (e.g., “flush”) against or spaced from the plate  430   a  and allow the lever  502  to move adjacent the plate  430   a  with little or no interference (e.g., contact) with the plate  430   a  (e.g., compared to a configuration without the straight sides  430   c ). 
     As discussed above, the mandrel  400  can move relative to the support frames  200 ,  300  between an upper position and a lower position, for example, via movement of the guides  412  within the channels  210 ,  310 . As also discussed, movement of the mandrel  400  to the lower position can provide access to an upper tissue roll  2 . With reference to  FIG. 12C , in some cases, when the lever  502  moves to a neutral position (discussed above), the arm  510  of the lever  502  may contact a portion of the upper tissue roll  2  (e.g., a bottom right corner of the upper tissue roll  2 ). Such contact may cause excess drag when a user retrieves a length of the upper tissue roll  2 . This excess drag can in turn make retrieval more difficult and/or may cause inadvertent tearing of the product retrieved from the roll  2 . As discussed above, the lever  502  can include a flange  512  that can engage a portion of the mandrel  400  and cause the lever  502  to move (e.g., rotate) such that contact between the arm  510  and the upper tissue roll  2  is reduced or prevented. 
       FIGS. 14A-14B  illustrate views of a portion of the support frame  300 , mandrel  400 , and lever assembly  500  with the support frame  200  removed.  FIGS. 14A-14B  illustrate the mandrel  400  within the straight portion  310   b  of the channel  310 . While the support frame  200  is not illustrated in  FIGS. 14A-14B , it is to be understood that the mandrel  400  can also be within the straight portion  210   b  of the support frame  200  when in the position shown. As shown, the flange  416   b  of the mandrel  400  can be positioned within a space defined by the distance d 1  between an end of the flange  512  and an end of the arm  508 . 
       FIGS. 15A-15B  illustrate views of the portion of the support frame  300 , mandrel  400 , and the lever assembly  500  shown in  FIGS. 14A-14B  with the support frame  200  removed. However,  FIGS. 15A-15B  illustrate the mandrel  400  when it is moving through the angled portion  310   c  of the channel  310  of the support frame  300 . As can be seen in  FIGS. 15A-15B , when the mandrel  400  moves through the angled portion  310   c , the flange  416   b  of the mandrel  400  can be moved and/or rotated such that the flange  416   b  contacts the flange  512  of the lever  502 . Such contact can cause the lever  502  to move, which can in turn can cause the arm  510  to move. For example, such contact of the flange  416   b  with the flange  512  can cause the lever  502  to rotate (e.g., about an axis extending through the pin  501 ) such that the arm  510  is rotated away from a portion of the upper tissue roll  2 . For example, with reference to  FIG. 12C , such rotation can cause the arm  510  to move and/or rotate in a direction away from the support frame  200  (e.g., move to the “right” given the view shown in  FIG. 12C ). Accordingly, the flange  512  of the lever  502  can provide a mechanism by which the arm  510  is automatically moved away from the upper tissue roll  2  when the mandrel  400  moves through the angled portion  310   c . Additionally, in some variants, the offsetting of the flange  512  relative to the arm  508  (discussed above) can allow the flange  512  to engage (e.g., interfere with) the mandrel  400  after the mandrel  400  has moved from the upper position to the lower position, is at or near the lower position, and/or when the mandrel  400  moves through the angled portion  310   c . While the above discussion was made with reference to the angled portion  310   c  and straight portion  310   b  of the channel  310  of the support frame  300 , it is to be understood that the mandrel  400  can move through the angled portion  210   c  and the straight portion  210   b  of the channel  210  of the support frame  200  in a similar manner. 
     Certain Terminology 
     Terms of orientation used herein, such as “top,” “bottom,” “horizontal,” “vertical,” “longitudinal,” “lateral,” and “end” are used in the context of the illustrated embodiment. However, the present disclosure should not be limited to the illustrated orientation. Indeed, other orientations are possible and are within the scope of this disclosure. Terms relating to circular shapes as used herein, such as diameter or radius, should be understood not to require perfect circular structures, but rather should be applied to any suitable structure with a cross-sectional region that can be measured from side-to-side. Terms relating to shapes generally, such as “circular” or “cylindrical” or “semi-circular” or “semi-cylindrical” or any related or similar terms, are not required to conform strictly to the mathematical definitions of circles or cylinders or other structures, but can encompass structures that are reasonably close approximations. 
     Conditional language, such as “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include or do not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements, and/or steps are in any way required for one or more embodiments. 
     Conjunctive language, such as the phrase “at least one of X, Y, and Z,” unless specifically stated otherwise, is otherwise understood with the context as used in general to convey that an item, term, etc. may be either X, Y, or Z. Thus, such conjunctive language is not generally intended to imply that certain embodiments require the presence of at least one of X, at least one of Y, and at least one of Z. 
     The terms “approximately,” “about,” and “substantially” as used herein represent an amount close to the stated amount that still performs a desired function or achieves a desired result. For example, in some embodiments, as the context may dictate, the terms “approximately”, “about”, and “substantially” may refer to an amount that is within less than or equal to 10% of the stated amount. The term “generally” as used herein represents a value, amount, or characteristic that predominantly includes or tends toward a particular value, amount, or characteristic. As an example, in certain embodiments, as the context may dictate, the term “generally parallel” can refer to something that departs from exactly parallel by less than or equal to 20 degrees. 
     Unless otherwise explicitly stated, articles such as “a” or “an” should generally be interpreted to include one or more described items. Accordingly, phrases such as “a device configured to” are intended to include one or more recited devices. Such one or more recited devices can also be collectively configured to carry out the stated recitations. For example, “a processor configured to carry out recitations A, B, and C” can include a first processor configured to carry out recitation A working in conjunction with a second processor configured to carry out recitations B and C. 
     The terms “comprising,” “including,” “having,” and the like are synonymous and are used inclusively, in an open-ended fashion, and do not exclude additional elements, features, acts, operations, and so forth. Likewise, the terms “some,” “certain,” and the like are synonymous and are used in an open-ended fashion. Also, the term “or” is used in its inclusive sense (and not in its exclusive sense) so that when used, for example, to connect a list of elements, the term “or” means one, some, or all of the elements in the list. 
     Overall, the language of the claims is to be interpreted broadly based on the language employed in the claims. The language of the claims is not to be limited to the non-exclusive embodiments and examples that are illustrated and described in this disclosure, or that are discussed during the prosecution of the application. 
     Summary 
     Several illustrative embodiments of tissue roll dispensers and associated methods have been disclosed. Although this disclosure has been described in terms of certain illustrative embodiments and uses, other embodiments and other uses, including embodiments and uses which do not provide all of the features and advantages set forth herein, are also within the scope of this disclosure. Components, elements, features, acts, or steps can be arranged or performed differently than described and components, elements, features, acts, or steps can be combined, merged, added, or left out in various embodiments. All possible combinations and subcombinations of elements and components described herein are intended to be included in this disclosure. No single feature or group of features is necessary or indispensable. 
     Certain features that are described in this disclosure in the context of separate implementations can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation also can be implemented in multiple implementations separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations, one or more features from a claimed combination can in some cases be excised from the combination, and the combination may be claimed as a subcombination or variation of a subcombination. 
     Any portion of any of the steps, processes, structures, and/or devices disclosed or illustrated in one embodiment or example in this disclosure can be combined or used with (or instead of) any other portion of any of the steps, processes, structures, and/or devices disclosed or illustrated in a different embodiment, flowchart, or example. The embodiments and examples described herein are not intended to be discrete and separate from each other. Combinations, variations, and other implementations of the disclosed features are within the scope of this disclosure. 
     While operations may be depicted in the drawings or described in the specification in a particular order, such operations need not be performed in the particular order shown or in sequential order, or that all operations be performed, to achieve desirable results. Other operations that are not depicted or described can be incorporated in the example methods and processes. For example, one or more additional operations can be performed before, after, simultaneously, or between any of the described operations. Additionally, the operations may be rearranged or reordered in other implementations. Also, the separation of various components in the implementations described above should not be understood as requiring such separation in all implementations, and it should be understood that the described components and systems can generally be integrated together in a single product or packaged into multiple products. Additionally, other implementations are within the scope of this disclosure. 
     Further, while illustrative embodiments have been described, any embodiments having equivalent elements, modifications, omissions, and/or combinations are also within the scope of this disclosure. Moreover, although certain aspects, advantages, and novel features are described herein, not necessarily all such advantages may be achieved in accordance with any particular embodiment. For example, some embodiments within the scope of this disclosure achieve one advantage, or a group of advantages, as taught herein without necessarily achieving other advantages taught or suggested herein. Further, some embodiments may achieve different advantages than those taught or suggested herein. 
     Some embodiments have been described in connection with the accompanying drawings. The figures are drawn and/or shown to scale, but such scale should not be limiting, since dimensions and proportions other than what are shown are contemplated and are within the scope of the disclosed invention. Distances, angles, etc. are merely illustrative and do not necessarily bear an exact relationship to actual dimensions and layout of the devices illustrated. Components can be added, removed, and/or rearranged. Further, the disclosure herein of any particular feature, aspect, method, property, characteristic, quality, attribute, element, or the like in connection with various embodiments can be used in all other embodiments set forth herein. Additionally, any methods described herein may be practiced using any device suitable for performing the recited steps. 
     For purposes of summarizing the disclosure, certain aspects, advantages and features of the inventions have been described herein. It is to be understood that not necessarily any or all such advantages are achieved in accordance with any particular embodiment of the inventions disclosed herein. No aspects of this disclosure are essential or indispensable. In many embodiments, the tissue dispensers may be configured differently than illustrated in the figures or description herein. For example, various functionalities provided by the illustrated modules can be combined, rearranged, added, or deleted. In some embodiments, additional or different processors or modules may perform some or all of the functionalities described with reference to the example embodiment described and illustrated in the figures. Many implementation variations are possible. Any of the features, structures, steps, or processes disclosed in this specification can be included in any embodiment. 
     In summary, various embodiments and examples of tissue roll dispensers and methods related to the same have been disclosed. This disclosure extends beyond the specifically disclosed embodiments and examples to other alternative embodiments and/or other uses of the embodiments, as well as to certain modifications and equivalents thereof. Moreover, this disclosure expressly contemplates that various features and aspects of the disclosed embodiments can be combined with, or substituted for, one another. Accordingly, the scope of this disclosure should not be limited by the particular disclosed embodiments described above, but should be determined only by a fair reading of the claims.