Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
283 words
In a power operated portable saw having a housing and a saw bar including driving means for reciprocating the saw bar along a linear axis while permitting the saw bar to freely be rotated about said axis, means controlling the rotation of said saw bar comprising: a. a journal bushing rotatively connected to the housing and projecting outwardly thereof, b. the journal bushing having a longitudinal opening of noncircular shape, c. the saw bar having a top portion shaped corresponding to and mating within the longitudinal opening of the journal bushing, whereby the saw bar is free to reciprocate therein but prevented from separate rotation, d. a control knob affixed to the journal bushing at the outward projection thereof, e. at least one aperture in the housing formed parallel to and radially outwardly from the axis of the saw bar, f. a locking pin carried in the control knob and spring-biased in the direction of the housing, g. the locking pin having the same radial distance from the axis of the saw bar as the said one aperture, h. a control means including a control bar operatively connected to a control arm carried on the locking pin, which control arm is biased against a cam having a vertically tapered surface, i. the control means having a locked position in which the locking pin is biased into the said aperture of the housing and an unlocked position in which the movement of the control bar urges the control arm to rise upon the cam and force the locking pin upwardly out of engagement with the said aperture of the housing, thus freeing the control knob and connected journal bushing and saw bar to rotate.
Claim 2
Dependent Claim
283 words
In a power operated portable saw having a housing and a saw bar including driving means for reciprocating the saw bar along a linear axis while permitting the saw bar to freely be rotated about said axis, means controlling the rotation of said saw bar comprising: a. a journal bushing rotatively connected to the housing and projecting outwardly thereof, b. the journal bushing having a longitudinal opening of noncircular shape, c. the saw bar having a top portion shaped corresponding to and mating within the longitudinal opening of the journal bushing, whereby the saw bar is free to reciprocate therein but prevented from separate rotation, d. a control knob affixed to the journal bushing at the outward projection thereof, e. at least one aperture in the housing formed parallel to and radially outwardly from the axis of the saw bar, f. a locking pin carried in the control knob and spring-biased in the direction of the housing, g. the locking pin having the same radial distance from the axis of the saw bar as the said one aperture, h. a control means including a control bar operatively connected to a control arm carried on the locking pin, which control arm is biased against a cam having a vertically tapered surface, i. the control means having a locked position in which the locking pin is biased into the said aperture of the housing and an unlocked position in which the movement of the control bar urges the control arm to rise upon the cam and force the locking pin upwardly out of engagement with the said aperture of the housing, thus freeing the control knob and connected journal bushing and saw bar to rotate.
Claim 3
Dependent Claim
32 words
The combination claimed in claim 1 wherein: a. the locking pin is continuously spring-biased in the direction of the housing with the control means in the locked position and the unlocked position.
Claim 4
Dependent Claim
25 words
The combination claimed in claim 1 wherein: a. a plurality of the said apertures of the housing formed at predetermined angles about the journal bushing.
Claim 5
Dependent Claim
27 words
The combination claimed in claim 3 wherein: a. each of the plurality of said apertures having an equal radial distance from the axis of the saw bar.