Carriage stop for radial arm saw

Claim 2

A carriage-type tool including an elongated support, carriage means movable along said support, power means adapted to move said carriage along said support, switch means on said carriage connected to said power means, control and stop means on said support disposed to engage said switch means during travel of said carriage, said control and stop means including a member slidably embracing elongated means on said support for adjustment therealong, manual means releasably clamping said member to said elongated means, said member having a control surface engageable with said switch means when said carriage reaches a predetermined position, said member including a stop surface adapted to engage fixed means on said carriage following engagement of said switch means and said control surface, said stop surface being spaced from said elongated means in a direction transverse to its length, whereby engagement of said stop surface by said fixed means on said carriage tends to pivot said member relative to said elongated means and increases the clamping force thereon.

Claim 3

A tool as defined in claim 1 wherein said stop surface extends substantially normal to said elongated means.

Claim 4

A tool as defined in claim 1 wherein said control surface includes a tapered cam surface inclined relative to said elongated means.

Claim 5

A tool as defined in claim 1 wherein said member includes a pair of opposed surfaces which confront a pair of surfaces on said elongated means, said stop surface being disposed to the side of one of said member surfaces remote from the other of said member surface, said other of said member surfaces having a relatively short dimension in the direction of said elongated means, said member when engaged by said fixed means on said carriage tending to pivot about an axis generally perpendicular to said elongated means.

Claim 6

A tool as defined in claim 4 wherein said member surfaces and said elongated means surfaces are generally parallel to one another.

Claim 7

A carriage-type power tool comprising an elongated support, a tool carriage supported for movement along said support, reversible power means for moving said carriage in opposite directions along said support, switch means on said carriage for reversing or stopping said power means and correspondingly the travel of said carriage along said support, a pair of actuating means adjustably mounted on said support in spaced relation and engageable with said switch means at opposite ends of the travel of said carriage along said support, each said actuating means also including positive stop means engageable with fixed means on said carriage, whereby to prevent said carriage from traveling past the positions defined by said actuating means should said switch means fail to operate, each said actuating means including gripping means operable upon engagement of said positive stop means by said fixed means on said carriage, whereby to tightly pinch said support and prevent movement of said stop means.

Claim 8

A carriage-type power tool comprising an elongated support, a tool carriage supported for movement along said support, reversible power means for moving said carriage in opposite directions along said support, switch means on said carriage for reversing or stopping said power means and correspondingly the travel of said carriage along said support, a pair of actuating means adjustably mounted on said support in spaced relation and engageable with said switch means at opposite ends of the travel of said carriage along said support, each said actuating means also including positive stop means engageable with fixed means on said carriage, whereby to prevent said carriage from traveling past the positions defined by said actuating means should said switch means fail to operate, each said actuating means including gripping means operable upon engagement of said positive stop means by said fixed means on said carriage, whereby to tightly pinch said support and prevent movement of said stop means.

Claim 9

A tool as defined in claim 6 wherein each of said actuating means includes manually operable means engageable with said support and clamping said actuating means thereto, said gripping means being operable to prevent movement of said stop means independently of said manually operable means.

Claim 10

An adjustable stop assembly comprising an elongated bar, a stop member slidably disposed on said bar, said stop member having a pair of surfaces adapted to confront a pair of elongated surfaces of said bar, clamping means on said stop member engageable with said bar and operable to press one of said stop member surfaces against an adjacent bar surface, the other of said stop member and bar surfaces being spaced from one another thereby allowing said stop member to pivot relative to said bar, said stop member having an abutment surface disposed to one side of and substantially normal to said elongated surface, whereby pressure against said abutment surface in a direction generally lengthwise of said bar pivots said stop member and presses one end of said one stop member surface tightly against said adjacent elongated surface of said bar and increases the clamping force thereon.

Claim 11

An adjustable stop assembly comprising an elongated bar, a stop member slidably disposed on said bar, said stop member having a pair of surfaces adapted to confront a pair of elongated surfaces of said bar, clamping means on said stop member engageable with said bar and operable to press one of said stop member surfaces against an adjacent bar surface, the other of said stop member and bar surfaces being spaced from one another thereby allowing said stop member to pivot relative to said bar, said stop member having an abutment surface disposed to one side of and substantially normal to said elongated surface, whereby pressure against said abutment surface in a direction generally lengthwise of said bar pivots said stop member and presses one end of said one stop member surface tightly against said adjacent elongated surface of said bar and increases the clamping force thereon.

Claim 12

An adjustable stop assembly for a traveling carriage, said assembly including an elongated bar extending generally parallel to the direction of travel of said carriage, a stop member slidably disposed on said bar and defining opposed first and second surfaces disposed in confronting relation to first and second opposed surfaces, respectively, on said bar, at least one of said confronting stop member and bar surfaces being spaced to allow limited pivot movement of said stop member, means defining abutment means on said stop member engageable by means on said carriage and disposed to the side of said first surfaces opposite said second surfaces, said stop member being adapted to pivot slightly relative to said bar when engaged by said means on said carriage, whereby to pinch at least portions of said first and second surfaces on said stop member against said first and second surfaces on said bar, said first and second surface portions being spaced a small but definable distance from one another in the direction of said bar, whereby to prevent movement of said stop member by said carriage.

Claim 13

An adjustable stop assembly for a traveling carriage, said assembly including an elongated bar extending generally parallel to the direction of travel of said carriage, a stop member slidably disposed on said bar and defining opposed first and second surfaces disposed in confronting relation to first and second opposed surfaces, respectively, on said bar, at least one of said confronting stop member and bar surfaces being spaced to allow limited pivot movement of said stop member, means defining abutment means on said stop member engageable by means on said carriage and disposed to the side of said first surfaces opposite said second surfaces, said stop member being adapted to pivot slightly relative to said bar when engaged by said means on said carriage, whereby to pinch at least portions of said first and second surfaces on said stop member against said first and second surfaces on said bar, said first and second surface portions being spaced a small but definable distance from one another in the direction of said bar, whereby to prevent movement of said stop member by said carriage.

Claim 14

An adjustable stop assembly comprising an elongated bar, a stop member slidably disposed on said bar, said stop member having a surface adapted to confront an elongated surface of said bar, clamping means on said stop member engageable with said bar and operable to press said stop member surface against said bar surface, said clamping means including a member slidable on said stop member and engageable with another elOngated surface of said bar opposite said first mentioned elongated surface, manually operable means adapted to move said clamping means into clamping engagement with said bar, said stop member having an abutment surface disposed to one side of and substantially normal to said first mentioned elongated surface, whereby pressure against said abutment surface in a direction generally lengthwise of said bar pivots said stop member and presses one end of said first mentioned stop member surface tightly against said elongated surface of said bar and increases the clamping force thereon.

Claim 15

An adjustable stop assembly comprising an elongated bar, a stop member slidably disposed on said bar, said stop member having a surface adapted to confront an elongated surface of said bar, clamping means on said stop member engageable with said bar and operable to press said stop member surface against said bar surface, said clamping means including a member slidable on said stop member and engageable with another elOngated surface of said bar opposite said first mentioned elongated surface, manually operable means adapted to move said clamping means into clamping engagement with said bar, said stop member having an abutment surface disposed to one side of and substantially normal to said first mentioned elongated surface, whereby pressure against said abutment surface in a direction generally lengthwise of said bar pivots said stop member and presses one end of said first mentioned stop member surface tightly against said elongated surface of said bar and increases the clamping force thereon.

Claim 16

A stop assembly as defined in claim 10 wherein said clamping member includes an elongated pin adapted to wedge against said another elongated surface of said bar.

Claim 17

A stop assembly as defined in claim 10 which includes spring means normally biasing said clamping member into clamping engagement with said bar.

Claim 18

A stop assembly as defined in claim 12 wherein said manually operable means includes a screw operatively threadedly engageable with said clamping member whereby to press said clamping member into clamping engagement with said bar, said screw and clamping member being manually movable conjointly relative to said stop member and against the force of said spring means whereby to release said clamping member from said bar and allow movement of said stop member relative to said bar.

Claim 19

An adjustable stop assembly comprising an elongated bar, a stop member slidably disposed on said bar, said stop member having a surface adapted to confront an elongated surface of said bar, clamping means on said stop member engageable with said bar and operable to press said stop member surface against said bar surface, said stop member having an abutment surface disposed to one side of and substantially normal to said elongated surface, whereby pressure against said abutment surface in a direction generally lengthwise of said bar pivots said stop member and presses one end of said stop member surface tightly against elongated surface of said bar and increases the clamping force thereon, said stop member being effective to grip said bar surface at incrementally spaced positions therealong to thereby prevent movement of said stop member under the action of pressure against said abutment surface generally lengthwise of said bar independently of said clamping means.

Claim 20

An adjustable stop assembly comprising an elongated bar, a stop member slidably disposed on said bar, said stop member having a surface adapted to confront an elongated surface of said bar, clamping means on said stop member engageable with said bar and operable to press said stop member surface against said bar surface, said stop member having an abutment surface disposed to one side of and substantially normal to said elongated surface, whereby pressure against said abutment surface in a direction generally lengthwise of said bar pivots said stop member and presses one end of said stop member surface tightly against elongated surface of said bar and increases the clamping force thereon, said stop member being effective to grip said bar surface at incrementally spaced positions therealong to thereby prevent movement of said stop member under the action of pressure against said abutment surface generally lengthwise of said bar independently of said clamping means.

Claim 21

An adjustable stop assembly comprising an elongated bar, a stop member slidably embracing said bar and movable therealong, a means for locking said stop member at incrementally spaced positions along said bar, said locking means including a pin notched to receive a portion of said bar, said notch defining a wedged surface adapted to wedge against said bar whereby to clamp said stop member to said bar, manually operable means on said stop member for selectively locking and releasing said pin in wedging engagement with said bar.

Claim 22

An adjustable stop assembly comprising an elongated bar, a stop member slidably embracing said bar and movable therealong, a means for locking said stop member at incrementally spaced positions along said bar, said locking means including a pin notched to receive a portion of said bar, said notch defining a wedged surface adapted to wedge against said bar whereby to clamp said stop member to said bar, manually operable means on said stop member for selectively locking and releasing said pin in wedging engagement with said bar.