Air-actuated stapling gun improvement
OwnerStephen E. Thueringerinventor
Life of this patent
Estimating the term…
Abstract
An air-actuated stapling gun that can be conveniently advanced over a stapling surface for automatic-stapling purposes, and this without the necessity of lifting the gun from such stapling surface preparatory to a subsequent staple set. The subject stapling gun retains the double-safety trigger feature common to present-day stapling guns, but includes a wheel mechanism, preferably spring-biased, whereby, once both triggers are and continue to remain manually depressed, the wheel employed, when rolled over a work-piece, will automatically cooperate to fire intermittently the gun. Provision is made for varying interstaple spacing and also for returning the wheel to a "start" position.
Claims4
In an air-operated stapling gun having a staple driver, a housing provided with a cylinder, a piston operatively disposed in said cylinder and connected to said staple driver, staple magazine means coupled to said housing and operatively aligned with said staple driver for sequential, single-staple ejection, the combination of said housing and said staple magazine means providing a staple-ejection nose accommodating said staple ejection, said housing being provided with an air-pressure inlet and also air-exhaust vent means, trigger means operatively coupled to said housing and comprising outer and inner trigger elements, and valving means intercoupling said piston and air-pressure inlet and said air-exhaust vent means for enabling air-pressure reciprocation of said piston in successive cycles, said valving means having a valve control means for initiating each of such cycles, said trigger means being cooperatively disposed with respect to said valve control means:
- an improvement comprising a spring-biased slide member slideably carried by said housing, a work-surface engaging friction wheel pivotally mounted to said slide member and having actuator means and a peripheral surface disposed proximate said ejection nose, and operative means coupled to said inner trigger element, carried by said stapling gun, and proximate to and periodically engaged by said actuator means for actuating said inner trigger element to in turn actuate said valve control element when said outer trigger element is manually depressed.
In an air-operated stapling gun having a staple driver, a housing provided with a cylinder, a piston operatively disposed in said cylinder and connected to said staple driver, staple magazine means coupled to said housing and operatively aligned with said staple driver for sequential, single-staple ejection, the combination of said housing and said staple magazine means providing a staple-ejection nose accommodating said staple ejection, said housing being provided with an air-pressure inlet and also air-exhaust vent means, trigger means operatively coupled to said housing and comprising outer and inner trigger elements, operative means coupled to said inner trigger element and carried by said housing for operationally moving said inner trigger element when said outer trigger element is manually depressed, and valving means intercoupling said piston and air-pressure inlet and said air-exhaust vent means for enabling air-pressure reciprocation of said piston in successive cycles, said valving means having a valve control means for initiating each of such cycles, said trigger means being cooperatively disposed with respect to said valve control means:
- an improvement comprising a work-surface engaging friction wheel carried by said housing and having an eccentrically disposed actuator means and a peripheral surface passing proximate said ejection nose, said wheel including an eccentrically disposed counterweight, separate from said actuator means, disposed to position said wheel so that said actuator means is proximate a beginning, thrusting engagement with said operative means preparatory to stapling gun operation.
Dependencies are inferred from the claim text.