Rockland, Inc.

Other

David C Cummings

Ashley E Heiple

Samuel S Pratt

James Milton Phillips

Neil C Gugins

Kerry J Gugins

A filter including a first chamber; a second chamber; a piston having a head portion disposed in the first chamber and a rod portion disposed in the second chamber; a third chamber containing a filter medium, having an inlet communicating with the second chamber and an outlet; first and second conduits supplying fluid under pressure to the first and second chambers, respectively; and a valve in the first conduit operable to direct fluid under pressure to opposite sides of the piston head portion to reciprocate the piston and correspondingly eject fluid in the second chamber through the third chamber.

Filter and method of filtering a fluid

A cartridge feeding attachment for a firearm generally consisting of a housing attachable to the firearm having means for guiding a stack of cartridges into the cartridge chamber of the firearm along a first line of travel, a follower engageable with one of such cartridges and means disposed between the housing and the follower for biasing the follower along the first line of travel to feed a cartridge into the cartridge chamber; a sprocket supported on the housing having circumferentially spaced recesses each receiving a cartridge of a cartridge belt trained over the sprocket, and a rotational axis positioned so that upon rotational indexing thereof, a cartridge of the belt will be positioned along a second line of travel extending between the follower and a cartridge of the stack of cartridges; means displaceable along the second line of travel extending between the follower and a rearwardmost cartridge of the stack of cartridges; means displaceable along the second line of travel between a retracted position out of engagement with the cartridge of the cartridge belt positioned along the second line of travel and an extended position engaging and displacing such cartridge between the follower and the rearwardmost cartridge of the stack of cartridges; means for biasing the displaceable means in the retracted position; means for transmitting the force of expanding gases resulting from the firing of the firearm to the displaceable means, operable for displacing the displaceable means between the retracted and extended positions; and means responsive to the displacement of the follower upon actuation of the displaceable means for rotationally indexing the sprocket to correspondingly the position another cartridge of the cartridge belt along the second line of travel.

Cartridge feeding attachment for firearms

An assembly mountable on the dipper stick of a machine, having a bucket pivotally connected thereto and means operatively interconnecting the dipper stick and the bucket for curling and uncurling the bucket, cooperable with the bucket when mounted on the dipper stick for grappling objects generally including an arm member pivotally connectable at one end thereof to the underside of the dipper stick, depending freely therefrom and swingable in a substantially vertical plane, and having a length sufficient to be received within the bucket opening when the arm member is connected to the dipper stick and is depending freely therefrom and the bucket is curled as in performing an excavating function and a chain connectable at one end to the underside of the dipper stick and at another end thereof to the arm member.

Grappling assembly for excavating machines

An attachment connectable to a boom member of a machine for performing work functions generally consisting of a handle pivotally connectable to a boom member of the machine, a ground engageable arm member pivotally connected to the handle and an extendable strut assembly interconnecting the handle and arm member consisting of a hydraulic cylinder assembly having a cylinder member pivotally connected to the handle and a rod member pivotally connected to the arm member, and including means intercommunicating the base and rod ends of the cylinder member, at least one electrically operable valve disposed in the intercommunicating means and operatively connectable to control means disposed on the machine, selectively operable to open the valve and permit the free flow of fluid between the base and rod ends of the cylinder member, and correspondingly the angular displacement of the arm member relative to the handle upon maneuvering the arm member by an operator of the machine, and to close and preclude the free flow of fluid between the base and rod ends of the cylinder member, and correspondingly the angular displacement of the arm member relative to the handle, and an accumulator selectively communicable with the variable volume chambers of the cylinder for compensating for the fluid volume differential of such chambers.

Attachment for earth-moving machines

A tool assembly mountable on the handle of a material working machine generally including a link mountable on the machine handle for pivotal movement about a first axis and connectable to a fluid actuated assembly connected to the machine handle, operable for displacing the link about such first axis, an implement connected to the link for pivotal movement about a second axis, a first fluid actuated assembly operatively interconnecting the link and the implement, a second fluid actuated assembly operatively interconnecting the link and the implement, a first fluid line intercommunicating a base end of the cylinder of the first fluid actuated assembly and one of the base and rod ends of the cylinder of the second fluid actuated assembly, a second fluid line intercommunicating a rod end of the cylinder of the first fluid actuated assembly and the other of the base and rod ends of the cylinder of the second fluid actuated assembly and a valve disposed in one of the fluid lines, operable to be selectively disposed in open and closed conditions whereby the opening of such valve permits the implement to be tilted relative to the machine handle and the closing of the valve function to fix the angle of the bucket relative to the machine handle.

Growing community of inventors

Crouse, NC, United States of America

David C Cummings