A stapling machine having a base, an anvil upon the base, an invertible magazine having a staple discharge opening and staple feeding means pivotally connected to the base, a cover overlying the magazine and pivotally connected to the base and magazine, a cap overlying the cover and also pivotally connected to the base, and an indicia bearing member connected to the cap. The anvil of the machine is supported within a recess provided in the base and is held firmly in downward position within the recess by one end of a leaf spring. The anvil is formed with chamfers on its leading and trailing edges and on its underside and provided with selectively engageable pinning and clinching portions. The magazine and associated structures are connected to the base by a pin passing through a pair of spaced ears which are each formed with upwardly and forwardly extending top portions and the topmost portion of each of the ears is in horizontal alignment with the staple discharge opening of the magazine when the magazine is in in inverted position on the base. Each of the ears also bears an inwardly and laterally extending portion adjacent the base which ears are abuttable with the sides of the magazine when the magazine is in normal position upon the base. Upon the pin which connects the magazine and associated structure with the ears there is a member formed with a pair of laterally disposed spacer elements thereupon which serve to space the magazine an associated structures from the sides of the ears and to prevent unwanted lateral movement thereupon. The indicia bearing member overlies fastening cap and is formed with fastening elements which connect with corresponding fastening elements of the cap.
A paper stapler is provided with a pin that protrudes from the front end of the magazine when the stapler is low on staples. The pin is distinctively colored (e.g., red), to visually alert the user to the fact that the magazine will soon need to be loaded with a fresh supply of staples. Alternatively, when the stapler is low on staples, the top surface of the top housing of the stapler is deformed, when a button-like element that is otherwise flush with the top surface begins to extend above the top surface. This provides the user with a tactile cue that the stapler is low on staples. Both tactile and visual cues can be provided to the user indicative of the fact that there is a relatively low number of staples remaining in the magazine.
4756462 - Cassette type stapler - Owned by Etona Company Limited (JP) [*] Notice:The portion of the term of this patent subsequent to August 26, 2003 has been disclaimed.
The present invention provides a cassette type stapler comprising a base member, a cassette receiving member pivotably connected with the base member and including a hollow portion with a forward opened end and a rearward closed end, a handle member pivotably mounted on the cassette receiving member, a cassette containing a set of staples to be driven and inserted into the cassette receiving member through the forward opened end thereof and a locking lever pivotably connected with the cassette receiving member and having a latching end adapted to penetrate into aligned openings on the cassette and cassette receiving member when the cassette is completely received in the cassette receiving member.
The present invention discloses a hand held stapler which can be used for joining sets of different numbers of paper sheets. The stapler has a stapling arm with a lever which extend past a pivot position by a length greater than the magazine of the stapler by an amount sufficient to provide a substantially increased leverage for driving staples during the stapling operation.
A desktop stapler uses a spring to store energy to install staples by impact blow. The force required to fasten papers together is reduced. A very compact mechanism is used, including a dual coil power spring with a nested lever. A multi function base provides a sloped front all the way to down to a desk top surface to guide paper sheets atop the base, easy access for lifting the stapler off a desk, horizontal or vertical resting positions, and integrated soft grip under-surface. The base surrounds the rear of the stapler body to provide a smooth exterior so that the device is natural to use both horizontally and vertically. A simple re-set spring provides a smooth re-set action as the handle is raised. A staple track includes enlargement features to fit a larger staple pusher spring.
The present invention provides a stapler with a novel leaf spring actuation mechanism. According to the teaching of the present invention, the stapler comprises a striking plate for dispensing a staple from a staple magazine, a leaf spring engaged with the striking plate for driving the striking plate, and an actuation bar for lifting the leaf spring from a first position to a second position whereby lifting the striking plate from an initial position to a release position in which the leaf spring is released from the actuation bar to drive the striking plate towards the initial position. Preferably, a pair of lugs on the actuation bar pushes up a pair of tabs on the leaf spring when an L-shaped front end of the actuation bar moves upward along a ramp when an external force is applied to the actuation bar during the stapling operation.
