reference will now be made to the example embodiments of the present general inventive concept , examples of which are illustrated in the accompanying drawings and illustrations . the example embodiments are described herein in order to explain the present general inventive concept by referring to the figures . fig1 and 2 illustrate example embodiments of the present general inventive concept . fig1 depicts an accessory storage device with a receiver body 1 which contains a lower receiver opening 1 a and an upper receiver opening 1 b . the receiver body 1 is designed to accept and secure a stored accessory . the lower clamp lever 2 a and upper clamp lever 2 b cannot be seen in fig1 as they are retracted into the receiver body 1 and are resting in the undamped position . fig2 depicts receiver body 1 with a lower clamp lever 2 a and an upper clamp lever 2 b pivoted into the clamped position . the handle 4 rotation drives the lower and upper clamp levers 2 a and 2 b , via a drive pin 10 and drive slot 11 ( see fig4 and 5 ) to rotate from an undamped position shown in fig1 to a clamped position shown in fig2 . pressing on the release button 16 releases the braking lever 7 . when the braking lever 7 is released , the torsion spring 12 forces lower clamp lever 2 a and upper clamp lever 2 b into the undamped position . fig3 a through 3c show examples of three potential configurations to store various combinations of accessories 31 , 32 of varying thicknesses . the examples shown in fig3 a to 3c depict the varying thicknesses of the accessories as thick accessory 31 and thin accessory 32 , but the present general inventive concept is not limited to any particular thickness or combination of accessories . moreover , although fig3 c illustrates a thick accessory 31 loaded in the top receiver opening 1 b and no accessory in the empty bottom receiver opening 1 a , the present general inventive concept is not limited to such configuration . the top receiver opening 1 b could be empty and the bottom receiver opening 1 a could be loaded without departing from the present general inventive concept . as illustrated in fig3 a through 3c , lower clamp lever 2 a and upper clamp lever 2 b translate through varying degrees of rotation before engaging a stored accessory to provide the necessary clamping force to secure the stored accessory , depending on the thickness of a particular accessory and / or whether the receiver openings 1 a , 1 b are loaded or empty . the clamping force to lower clamp lever 2 a and upper clamp lever 2 b is provided through a handle 4 , and a linkage bar 3 is employed to facilitate relative motion of the clamp levers 2 a , 2 b driven by the handle 4 , as described in more detail below . fig4 depicts the clamp rack assembly mechanism in the undamped position , i . e ., ready to receive an accessory . fig5 depicts the clamp rack assembly mechanism in a fully clamped position against lower surfaces of the respective receiver openings 1 a , 1 b , demonstrating the full range of clamping motion when no accessories are present . referring to fig4 and 5 , rotation of the handle 4 from the first position of fig4 to the second position of fig5 forces the drive pin 10 from the right side of the drive slot 11 to the left side of the drive slot 11 , causing the linkage bar 3 to drive the associated clamp levers 2 a , 2 b toward a clamping position . during this movement , as the linkage bar 3 is driven by the handle 4 and drive pin 10 , the drive pin 10 is permitted to slide along the primary slot 3 b of the linkage bar 3 . the linkage bar 3 connects lower clamp lever 2 a and upper clamp lever 2 b through lower pin 9 a and upper pin 9 b . as the linkage bar 3 is driven by the handle 4 , and the clamp levers 2 a , 2 b begin to pivot towards a clamping position , the sliding motion of the upper pin 9 b in the elongated secondary slot 3 c serves to take up the system slack until lower clamp lever 2 a and upper clamp lever 2 b rotate and engage a stored accessory or come to rest on the base of their respective receiver opening . referring to fig4 - 5 , the handle 4 can be a formed as a lever and connected to the slide bar 5 via slide bar bolt 23 and mounting element 50 . the handle 4 can include an opening to receive the drive pin 10 , such that when the handle is pivoted between the first position and the second position , the drive pin 10 drives the linkage bar 3 and the slide bar 5 slides with respect to the braking lever 7 through an opening 7 a in the releasable braking lever 7 . in some embodiments the slide bar 5 can include a plurality of teeth , or notches , to help retain the slide bar 5 in a fixed position with respect to the braking lever 7 as the handle 4 is pivoted . in this configuration , counterclockwise rotation of handle 4 drives slide bar 5 and associated drive pin 10 to the left . those skilled in the art will appreciate that the handle 4 can take a variety of forms , and is not limited to the shape and size depicted in the example embodiments . for example , it is possible to form the handle 4 as a simple extension of the drive pin 10 to actuate the clamping action . fig6 is an isometric assembly view of a clamp rack mechanism according to an example embodiment of the present general inventive concept . although the drive pin 10 , linkage bar 3 , and slide bar 5 are configured in shape and size to impart rotational movement to the clamps 2 a , 2 b , it is possible to configure the components using sound engineering judgment to impart linear motion to the clamps 2 a , 2 b . for example , the slide bar 5 could be formed as a straight piece , and the linkage bar 3 could be formed to impart linear ( e . g ., up and down ) motion to the clamp members 2 a , 2 b , such that upon actuation of the drive pin 10 , the linkage bar 3 actuates the clamps 2 a , 2 b to move the clamps linearly up and down with respect to the receiver portions , wherein the clamps remain substantially parallel to the receiver portions during the clamping action . a variety of configurations could be implemented using sound engineering judgment to carry out the releasable clamping action of one or more clamps , using rotational or linear action , or combinations thereof , and all such configurations are intended to be covered within the scope of the present general inventive concept . fig7 is an assembly view of a clamp rack mechanism shown in an undamped position , and fig8 is an assembly view of a clamp rack mechanism shown in a clamped position , according to example embodiments of the present general inventive concept . fig8 depicts the clamp rack assembly mechanism in a clamped position . in fig8 , slide bar 5 passes through an opening 7 a in braking lever 7 . braking lever 7 is hanging in suspension on slide bar 5 and is pivotably captured by the compression spring 20 and the release button 16 . compression spring 20 provides a rotational bias to the upper end of braking lever 7 . the rotational position of braking lever 7 is limited by the binding interference of opening 7 a with the edges of slide bar 5 . as mentioned above , it is possible to for the slide bar 5 to include a plurality of teeth , or notches , to interact with the opening 7 a , to help retain the slide bar 5 in a fixed position with respect to the braking lever 7 when the handle 4 is released . it should be noted that in the standby position depicted in fig7 , the braking lever 7 is substantially perpendicular to the longitudinal axis of slide bar 5 whereas the portion of the braking lever 7 which engages the slide bar 5 is substantially transverse to the longitudinal axis of slide bar 5 . in this condition , if a force is applied to slide bar 5 in the direction of arrow 5 b by moving the handle 4 ( not shown in fig7 ) counterclockwise , slide bar 5 moves through opening 7 a because braking lever 7 is free to pivot against compression spring 20 . slide bar 5 may be freely advanced in the direction of arrow 5 b until lower clamp lever 2 a and upper clamp lever 2 b reach the limits of their rotation by engaging a stored accessory or the base of a lower or upper receiver opening 1 a or 1 b . however , in the standby position depicted in fig8 , if a force is applied in a direction opposite to arrow 5 b in the direction of arrow 5 c , the edges of opening 7 a bind against the surface of slide bar 5 and it is not possible , without further action , to advance slide bar 5 in the direction of arrow 5 c . compression of compression spring 20 by pressing on release button 16 , returns braking lever 7 to a substantially perpendicular position and allows slide bar 5 to advance in either direction . torsion spring 17 is biased to force slide bar 5 in the direction of 5 c . with no external force being transferred to slide bar 5 , torsion spring 7 will force slide bar 5 in the direction of arrow 5 c and slide bar 5 attached to linkage bar 3 will force linkage bar 3 to release lower clamp lever 2 a and upper clamp lever 2 b into the unclamped position . fig9 is an assembly view of a clamp rack mechanism shown in a clamped position with the upper clamp lever moving through full range of motion while lower clamp lever is held up . figure is shown without the handle for clarity according to an example embodiment of the present general inventive concept . fig1 is an assembly view of a clamp rack mechanism shown in a clamped position with the upper clamp lever held up while lower clamp lever is moved through the full range of motion . figure is shown without the handle for clarity according to an example embodiment of the present general inventive concept . referring to fig9 and 10 , rotation of the handle 4 from the first position to the second position moves the drive pin 10 to the left , causing the linkage bar 3 to drive the associated clamp levers 2 a , 2 b toward a clamping position . since the linkage bar 3 connects lower clamp lever 2 a and upper clamp lever 2 b as described in connection with fig4 and 5 , the elongated slots 3 c , 3 b serve to take up the system slack when different thickness accessories are clamped , allowing one or the other of the clamp levers 2 a , 2 b to continue to move , even if one of the clamps has already met resistance from a thicker accessory . fig1 is an assembly view of a clamp rack mechanism with a linkage bar assembly configured according to another embodiment of the present general inventive concept . in contrast to the linkage bar 3 illustrated in fig4 and 5 , the linkage bar 3 ′ of fig1 includes a circular opening 3 b ′ ( instead of elongated primary slot 3 b ) to receive the drive pin 10 , and a pair of elongated secondary slots 3 a ′, 3 c ′ drivably connected to a respective clamp lever 2 a , 2 b . during movement of the handle 4 ( not shown in fig1 , but similar to fig4 and 5 ), rotation of the handle 4 from the first position to the second position of forces the drive pin 10 from the right side of the drive slot 11 to the left side of the drive slot 11 , causing the linkage bar 3 ′ to drive the associated clamp levers 2 a , 2 b toward a clamping position by the pivotal movement of the ends of the linkage bar 3 ′, which in turn pivot the associated claim members 2 a , 2 b via the secondary slots . here , the secondary slots provide slack for either the lower clamp lever 2 a or upper clamp lever 2 b rotate and engage a stored accessory , depending on the thickness of the respective accessories being stored in each receiver . for example , if accessories of different thicknesses are being clamped by the upper clamp lever 2 b and the lower clamp lever 2 a , the slack provided by the secondary slots 3 a ′ and 3 c ′ will enable the linkage bar 3 ′ to continue to pivot until both clamp levers 2 a , 2 b have met resistance from the accessory being stored , and lock , as described above . certain example embodiments of the present general inventive concept can provide for the actuation of a single member that can initiate the rotation of one or more clamping members that will provide for the securing of one or more objects of the same or varying thickness , or for the securing of one object when a second or more objects is not present in the clamping device . the clamping mechanism can include a linkage bar that ties together two or more clamping members to drive the locking of the clamping members while allowing for securing objects of equal or varying thickness or for the securing of two or more objects when another object is not present in the clamping device . the present general inventive concept provides design flexibility for various numbers of or configurations of clamp mechanisms . design flexibility is also allowed for clamping and securing for purposes of storage or for other applications where clamping of one or more objects is required . it is noted that the simplified diagrams and drawings do not illustrate all the various connections and assemblies of the various components , however , those skilled in the art will understand how to implement such connections and assemblies , based on the illustrated components , figures , and descriptions provided herein , using sound engineering judgment . numerous variations , modifications , and additional embodiments are possible , and accordingly , all such variations , modifications , and embodiments are to be regarded as being within the spirit and scope of the present general inventive concept . for example , regardless of the content of any portion of this application , unless clearly specified to the contrary , there is no requirement for the inclusion in any claim herein or of any application claiming priority hereto of any particular described or illustrated activity or element , any particular sequence of such activities , or any particular interrelationship of such elements . moreover , any activity can be repeated , any activity can be performed by multiple entities , and / or any element can be duplicated . while the present general inventive concept has been illustrated by description of several example embodiments , it is not the intention of the applicant to restrict or in any way limit the scope of the inventive concept to such descriptions and illustrations . instead , the descriptions , drawings , and claims herein are to be regarded as illustrative in nature , and not as restrictive , and additional embodiments will readily appear to those skilled in the art upon reading the above description and drawings .