Sandblast abrading apparatus

Claim 2

Sandblast abrading apparatus comprising a container containing fine particle abrading material, and vibrator means attached to the container operable to vibrate it with components of both horizontal and vertical movement whereby said material is caused to become suspended in the form of a cloud within said container, said vibrator means comprising a housing having a bottom wall and having defined therein a cylindrical space, a ball member disposed within said space and movable therearound with horizontal and vertical components of movement, means to impart such movement to said ball member comprising a source of pressurized air, an air inlet connected to said source and tangentially communicating with said space, a vertically directed air outlet communicating with said space through said bottom wall, said vibrator means further comprising means resiliently and pivotally supporting said container for limited up and down arcuate movement.

Claim 3

Sandblast abrading apparatus comprising a container containing fine particle abrading material, vibrator means attached to the container operable to vibrate it whereby said material is caused to become suspended in the form of a cloud within said container, a nozzle assembly comprising a housing having a mixing chamber defined therein, a discharge tube communicating with said chamber, a particle conduit having one end communicating with said chamber and the other end communicating with said container, a source of pressurized air, and an air conduit interconnecting said source and said chamber and discharging into said chamber, a sub-housing carried by said container and having defined therein a sub-compartment, said other end of said particle conduit being in communication with said sub-compartment, said container being in communication with said sub-compartment through a feeder conduit, an ambient air conduit connected to said sub-compartment, and valve means to control the flow of ambient air into said sub-compartment and thereby control the amount of suspended material aspirated into said mixing chamber.

Claim 4

Sandblast abrading apparatus comprising a container containing fine particle abrading material, vibrator means attached to the container operable to vibrate it whereby said material is caused to become suspended in the form of a cloud within said container, a nozzle assembly comprising a housing having a mixing chamber defined therein, a discharge tube communicating with said chamber, a particle conduit having one end communicating with said chamber and the other end communicating with said container, a source of pressurized air, and an air conduit interconnecting said source and said chamber and discharging into said chamber, a sub-housing carried by said container and having defined therein a sub-compartment, said other end of said particle conduit being in communication with said sub-compartment, said container being in communication with said sub-compartment through a feeder conduit, an ambient air conduit connected to said sub-compartment, and valve means to control the flow of ambient air into said sub-compartment and thereby control the amount of suspended material aspirated into said mixing chamber.

Claim 5

The apparatus of claim 2, said other end of said particle conduit and said feeder conduit being oppositely disposed, the former having an inside diameter which is approximately twice that of the latter and being spaced from the latter a distance which is approximately equal to the inside diameter of said feeder conduit.

Claim 6

The apparatus of claim 3, the internal diameter of said discharge tube at the end thereof which is at said mixing chamber being approximately twice that of the adjacent end of said air conduit and said ends being spaced apart a distance which is approximately equal to the internal diameter of said adjacent end of said air conduit.

Claim 7

The apparatus of claim 4, said last-mentioned ends being directly opposed to each other, said particle conduit discharging into said mixing chamber tangentially therein and at a location which is radially outward from said last-mentioned ends.