Abstract:
A contact nose 15, in which an ejection opening 24 is formed coaxially with an ejection opening 18 of a nose portion 13 that guides a driver slidably, is slidably provided at an end part of the nose portion 13 to be urged in a direction of an end portion of the ejection opening 18. A guide slope 28 adapted to guide a tip end of a nail, which is hammered out tiltingly from the ejection opening 18 of the nose portion 13, into the ejection opening 24 is formed on an upper rear side of the ejection opening 24 of the contact nose 15.
Abstract:
A staple cartridge and feed means for use with a surgical stapling instrument of the type having an anvil about which a staple is formed during emplacement thereof in the skin or fascia of a patient. The cartridge comprises a body having a vertical staple feeding track adapted to hold a stack of staples and a separate vertical staple forming track with a staple former reciprocable therein by the surgical stapling instrument. The staple forming track and the staple feeding track are in parallel relationship separated by a divider wall. A window, defined by the cartridge body and the divider wall, provides a horizontal path between the staple feeding track and the staple forming track and is so sized as to permit the passage therethrough of a single staple from the bottom of the staple stack. Horizontal feeder means normally prevent passage of the bottommost staple from the stack through the window into the staple driving track. The horizontal feeder means, actuable by the surgical stapling instrument, positively shifts the bottommost staple of the stack from the staple feeding track horizontally through the window to the staple forming track and cooperates with retainer springs to hold a shifted staple in position in the staple forming track to be implanted and formed about the anvil by the staple former.
Abstract:
A stapler 100 is provided with a driver 5 provided at a forward end of the driver arm 4, as shown in FIG. 20A, driving a staple 30 out according to any predetermined clinching force, the driver 5 having projections 5b, 5b which contact portions of the staple 30 over the legs of the staple pushed against the front inner wall of the magazine 3 by a staple-pushing member 40. Accordingly, the clinching force is transferred to the legs through the projections 5b, 5b of the driver 5 so that the clinching force can be concentrated onto the legs. Furthermore, a staple-pushing member 40 pushes the staple 30, so that it is possible to prevent buckling from occurring in the legs.
Abstract:
A stapler 100 is provided with a driver 5 provided at a forward end of the driver arm 4, as shown in FIG. 20A, driving a staple 30 out according to any predetermined clinching force, the driver 5 having projections 5b, 5b which contact portions of the staple 30 over the legs of the staple pushed against the front inner wall of the magazine 3 by a staple-pushing member 40. Accordingly, the clinching force is transferred to the legs through the projections 5b, 5b of the driver 5 so that the clinching force can be concentrated onto the legs. Furthermore, a staple-pushing member 40 pushes the staple 30, so that it is possible to prevent buckling from occurring in the legs.
Abstract:
A staple driving tool and a method for clamping and stapling together two or more steel workpiece layers as in light gauge steel framing for residential and commercial buildings, truss assembly, and the like. The stapling tool has a guide body and a jaw assembly supporting an anvil. The jaw assembly is pivoted to a mounting bar extending along and beneath the tool magazine. The jaw is pivotable between a normal open position and a closed position wherein it clamps the steel workpiece layers to be joined between the anvil and the guide body prior to stapling. The jaw is pivotable by an air cylinder actuated toggle mechanism. An air valve normally connects the air cylinder to atmosphere. When actuated, the air valve connects the air cylinder to a source of pressurized air, shifting the jaw to clamping position. The air valve may be actuated by one of the tool safety and the tool trigger. Thereafter, the tool operator may release the trigger or safety to reposition the tool, or the operator may complete actuation of the trigger to drive a staple through the clamped steel layers, causing the anvil the clinch the staple against the steel layers. As the staple approaches the steel layers to be joined, a member enters between the staple legs to prevent buckling thereof until the staple penetrates the steel layers, whereafter the member is shifted by the staple crown and driver from between the legs to accommodate the staple crown and driver.
Abstract:
As a fastening device in which legs of a staple can be bent properly even when a large number of sheets of paper or sheets of hard paper are attempted to be fastened together, a fastening device is provided which includes a magazine portion accommodating staples and a housing portion including a staple driving blade between a handle portion and a base portion, wherein a pushing rod biased so that part of a distal end contacts a magazine front central inner surface is incorporated in a bottom central position of the magazine portion, and wherein the pushing rod defines a space for insertion of a staple between the magazine front central inner surface and an upper portion of the distal end and includes an inclined portion for contact of the pushing rod with the magazine front central inner surface at a lower portion of the distal end thereof.