Cutting – Means to drive or to guide tool – With simple rectilinear reciprocating motion only
Reexamination Certificate
1999-09-09
2001-12-04
Bray, W Donald (Department: 3725)
Cutting
Means to drive or to guide tool
With simple rectilinear reciprocating motion only
C083S588000
Reexamination Certificate
active
06324954
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an actuating device, and more particularly to a device for actuating the typical punches.
2. Description of the Prior Art
Typical punches comprise a punch rod slidably received in a housing, a knob secured on top of the punch rod for forcing the punch rod downward to cut or to punch the sheet members. A spring is engaged with the punch rod for biasing the punch rod away from the sheet members before the punch rod is depressed against the sheet members. The users may not apply a great force to actuate the punches.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional punches.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a device for actuating the punches with an increased force.
In accordance with one aspect of the invention, there is provided a device for actuating a punch, the punch including a housing, a punch rod slidably received in the housing, the device comprising a base for supporting the punch, an arm including a first end having a barrel secured thereon, the arm including a second end for securing to the base, a shaft slidably received in the barrel, and means for moving the shaft downward to actuate on the punch rod of the punch.
The shaft includes a middle portion, the moving means includes a lever having a first end pivotally secured to the barrel at a pivot axle and having a middle portion, and a pin engaged through the middle portions of the lever and of the shaft for allowing the lever to move the shaft to actuate on the punch. The barrel includes an oblong hole formed therein for slidably receiving the pin and for allowing the pin to be moved up and down relative to the barrel. A spring biasing device is further provided for biasing the shaft away from the base and the punch or for recovering the shaft.
An adjusting device is further provided for adjusting the second end of the arm relative to the base. The adjusting means includes a seat secured on the base, the seat includes a bore formed therein for slidably receiving the second end of the arm, and means for latching the second end of the arm to the seat. The seat includes at least one aperture laterally formed therein and communicating with the bore of the seat, the second end of the arm includes at least one orifice formed therein and aligned with the aperture of the seat, the latching means includes a latch engaged through the orifice of the second end of the arm and the aperture of the seat for securing the arm to the seat. A magnetic plate may further be secured on the base for attracting and securing the punch on the base.
Further objectives and advantages of the present invention will become apparent from a careful reading of a detailed description provided hereinbelow, with appropriate reference to accompanying drawings.
REFERENCES:
patent: 277452 (1883-05-01), Brandt
patent: 1491464 (1924-04-01), Coomer
patent: 4092005 (1978-05-01), Benroth
patent: 5142973 (1992-09-01), Tur et al.
patent: 5873294 (1999-02-01), Sciuto
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