Changeable plow sweep

Claim 2

A plow sweep comprising a shank having a circular opening at its lower end and a slotted opening closely adjacent and above said circular hole, a frog having a V-shaped forward portion with double recessed flanges at the side edges thereof, and a rearwardly, upwardly sloping upper edge, said frog further including a circular opening in the lower back portion thereof, meanS securing said frog to said shank through said circular openings, stop means extending through said slotted opening and abutting said sloping upper edge, an opened V-shaped cutting edge sweep blade having a portion thereof slidably engaged within the recessed flanges of said frog, said sweep having means forming an aperture on an inside edge portion of each sweep blade, and a relatively flexible locking means having a respective marginal end engaged with said aperture on each blade edge, said locking means having a body portion for engaging a rear portion of said frog to urge the blade into the recessed flanges of the frog.

Claim 3

The plow sweep of claim 1 wherein said shank includes spaced arms which receive said lower back portion of said frog therein, said slotted opening being arranged relative to said circular opening whereby rotation of said frog about the axis of said circular opening causes said stop means to be forced upwardly within said slot so that said upwardly sloping upper edge of said frog is rotated from within said spaced legs.

Claim 4

The plow sweep of claim 1 wherein said locking means is a longitudinally extending rod having the depending ends thereof bent back towards one another so that said bent ends, when inserted into the aperture of each said blade, maintains said blade affixed to said frog.

Claim 5

A changeable plow sweep assembly having a shank, a frog, and an opened V-shaped cutting sweep, the improvement comprising: said shank having a lower marginal end formed into parallel spaced walls thereby forming a cavity; means forming an aperture adjacent the free end portion of said walls, means forming a slot in said walls adjacent to said aperture; said frog having a groove formed in the leading edge portion thereof with said groove being of a configuration to receive a rearward marginal edge portion of the cutting sweep therein; locking means capturing said cutting sweep to said frog; said frog having a rearwardly directed upstanding portion thereof formed into an upwardly sloping edge portion, means by which an aperture is formed below said sloping edge portion, a fastener means received through the aperture of said walls of said shank; said rearwardly directed portion of said frog having a configuration which enables said rearwardly directed portion to be rotated into and out of said cavity; stop means movably attached to said slot with said upwardly sloping edge portion of said frog bearing against said stop means; whereby: said sloping edge portion of said frog, when sufficient pressure is exerted upon the cutting sweep, forces said stop means to move upwardly in said slot.

Claim 6

A changeable plow sweep assembly having a shank, a frog, and an opened V-shaped cutting sweep, the improvement comprising: said shank having a lower marginal end formed into parallel spaced walls thereby forming a cavity; means forming an aperture adjacent the free end portion of said walls, means forming a slot in said walls adjacent to said aperture; said frog having a groove formed in the leading edge portion thereof with said groove being of a configuration to receive a rearward marginal edge portion of the cutting sweep therein; locking means capturing said cutting sweep to said frog; said frog having a rearwardly directed upstanding portion thereof formed into an upwardly sloping edge portion, means by which an aperture is formed below said sloping edge portion, a fastener means received through the aperture of said walls of said shank; said rearwardly directed portion of said frog having a configuration which enables said rearwardly directed portion to be rotated into and out of said cavity; stop means movably attached to said slot with said upwardly sloping edge portion of said frog bearing against said stop means; whereby: said sloping edge portion of said frog, when sufficient pressure is exerted upon the cutting sweep, forces said stop means to move upwardly in said slot.

Claim 7

The plow sweep of claim 4, wherein said locking means including apertures formed in each said cutting sweep, an elongated member having the marginal depend-ing ends thereof received within the last said apertures with a marginal central portion of said member bearing against a rear por-tion of said frog.

Claim 8

The plow sweep of claim 4 and further including means releasably holding said cutting sweep to said frog; the last said means being an elongated member having a central portion which can be brought to bear against a rear portion of said frog, and opposed end portions which can be brought to bear against opposed portions of said cutting sweep to thereby urge said cutting sweep into said groove.

Claim 9

The plow sweep assembly of claim 6 wherein said opposed portions of said cutting sweep are provided with apertures within which a marginal end portion of said elongated member is received, with said central portion thereof being abut-tingly received against a rear portion of said frog.