Device for holding stacked sheet material

Claim 1

A DEVICE OF THE KIND DESCRIBED COMPRISING, PRIOR TO COMPLETE ASSEMBLING OF ITS PARTS, A BASEBOARD HAVING A FRONT AND A REAR END PORTION, A MOUNTING ARM, MEANS UPSTANDING FROM SAID BASEBOARD AND SUPPORTING SAID MOUNTING ARM CONSIDERABLY THEREABOVE IN REAR TO FRONT EXTENDING POSITION, HOOK MEANS CARRIED BY THE FRONT END PORTION OF SAID MOUNTING ARM AND POINTING UPWARDLY AND REARWARDLY IN A SLIGHTLY SPACED RELATION TO THE UNDER SIDE OF SAID MOUNTING ARM, A CLAMPING ARM HAVING AN END PORTION ENGAGEABLE WITH SAID HOOK MEANS, SAID CLAMPING ARM HAVING, EXTENDING ALONG ONE OF ITS SIDES, AN ELONGATED POCKET THE MOUTH OF WHICH IS SLIGHTLY SPACED AWAY FROM THE AFORESAID END PORTION OF THE CLAMPING ARM, AND AN ELONGATED SPRING CONSISTING OF TWO LIMBS ANGULARLY RELATED TO EACH OTHER, ONE LIMB OF SAID SPRING BEING INSERTABLE INTO SAID POCKET SO THAT, WHEN SAID CLAMPING ARM IS PUT INTO ITS OPERATIVE POSITION THE OTHER LIMB THEREOF ENGAGES THE UNDER SIDE OF SAID MOUNTING ARM, SO THAT THE SPRING BOTH MAINTAINS THE CLAMPING ARM IN ENGAGEMENT WITH SAID HOOK MEANS AND CAUSES IT TO PRESS UPON SAID BASEBOARD OR MATERIAL OVERLYING IT, ALL PORTIONS OF THE SPRING BEING IN A DOWNWARDLY OR REARWARDLY SPACED RELATION TO THE AXIS ABOUT WHICH THE CLAMPING ARM SWINGS.

Claim 2

A DEVICE OF THE KIND DESCRIBED COMPRISING, PRIOR TO COMPLETE ASSEMBLING OF ITS PARTS, A BASEBOARD HAVING A FRONT AND A REAR END PORTION, A MOUNTING ARM, MEANS UPSTANDING FROM SAID BASEBOARD AND SUPPORTING SAID MOUNTING ARM CONSIDERABLY THEREABOVE IN REAR TO FRONT EXTENDING POSITION, HOOK MEANS CARRIED BY THE FRONT END PORTION OF SAID MOUNTING ARM AND POINTING UPWARDLY AND REARWARDLY IN A SLIGHTLY SPACED RELATION TO THE UNDER SIDE OF SAID MOUNTING ARM, A CLAMPING ARM HAVING AN END PORTION ENGAGEABLE WITH SAID HOOK MEANS, SAID CLAMPING ARM HAVING, EXTENDING ALONG ONE OF ITS SIDES, AN ELONGATED POCKET THE MOUTH OF WHICH IS SLIGHTLY SPACED AWAY FROM THE AFORESAID END PORTION OF THE CLAMPING ARM, AND AN ELONGATED SPRING CONSISTING OF TWO LIMBS ANGULARLY RELATED TO EACH OTHER, ONE LIMB OF SAID SPRING BEING INSERTABLE INTO SAID POCKET SO THAT, WHEN SAID CLAMPING ARM IS PUT INTO ITS OPERATIVE POSITION THE OTHER LIMB THEREOF ENGAGES THE UNDER SIDE OF SAID MOUNTING ARM, SO THAT THE SPRING BOTH MAINTAINS THE CLAMPING ARM IN ENGAGEMENT WITH SAID HOOK MEANS AND CAUSES IT TO PRESS UPON SAID BASEBOARD OR MATERIAL OVERLYING IT, ALL PORTIONS OF THE SPRING BEING IN A DOWNWARDLY OR REARWARDLY SPACED RELATION TO THE AXIS ABOUT WHICH THE CLAMPING ARM SWINGS.