Yard hydrant

Claim 2

A yard hydrant, comprising: a casing having an upper and lower end, a valve housing with a spring loaded valve means therein in the lower end of said casing and operatively connected to a source of fluid under pressure, a head section including an integral nozzle, means for arranging said head section relative to the upper end of said casing for vertical reciprocation relative thereto, a longitudinal expandable and retractible bellows fluid reservoir having an upper and lower end arranged within said casing, a standpipe within said casing having one end secured to said head section in flow communication therewith and its other end extended through the upper end of said reservoir and terminating within said reservoir, said standpipe being vertically reciprocal with corresponding movement of said head section, a respective integral axial projecting lower neck portion and upper neck portion at the respective lower and upper ends of said bellows reservoir, said upper neck portion embracing said standpipe and said lower neck portion embracing said valve housing, a first stop member embracing said lower neck portion and said valve housing and in abutment with the lower end of said bellows reservoir including means for locking said stop member in said position, a second stop member embracing said upper neck portion and said standpipe and in abutment with the upper end of said bellows reservoir including means for locking said stop member in said position, the downwardly movement of said standpipe effecting the retraction and compression of said reservoir and with said other end of said standpipe acting against said valve means to open fluid flow through said hydrant, and the upwardly movement of said standpipe elevating the same from contact with said valve means permitting it to close and simultaneously expanding said reservoir whereby fluid in said standpipe upon closing of said valve means drains therefrom into said reservoir for storage.

Claim 3

A yard hydrant as defined in claim 1 including said standpipe being provided at its lower end with a lateral opening whereby with fluid stored in said expanded bellows reservoir while said valve means is closed, the movement of said standpipe for opening said valve means and simultaneously compressing said bellows reservoir causes the stored fluid to enter said standpipe through said lateral opening for reuse and commingling with fluid from the supply source for passage out of said nozzle.

Claim 4

A yard hydrant as defined in claim 1 including: a cylinder having an upper and lower end and arranged in the lower end of said casing in embracing relationship to said bellows reservoir to hold it against radial expansion, and means for operatively securing the lower end of said cylinder to said valve housing.

Claim 5

A yard hydrant as defined in claim 1 including: a cylinder having an upper and lower end and arranged in the lower end of said casing in embracing relationship to said bellows reservoir to hold it against radial expansion, means for securing the lower end of said cylinder to said first stop member, and said second stop member being vertically reciprocal within said cylinder with corresponding movements of said standpipe.

Claim 6

A yard hydrant, comprising: a casing having an upper and lower end, a valve housing with a spring loaded valve means therein in the lower end of said casing and operatively connected to a source of fluid under pressure, a head section including an integral nozzle, means for arranging said head section relative to the upper end of said casing for vertical reciprocation and rotation relative thereto, a longitudinal expandable and retractible bellows fluid reservoir having an upper and lower end arranged within said casing including means attaching the Lower end of said reservoir to said valve housing, a standpipe within said casing having one end secured to said head section in flow communication therewith and its other end extended through the upper end of said reservoir and terminating within said reservoir, said standpipe being vertically reciprocal with corresponding movement of said head section, means connecting the upper end of said reservoir to said standpipe for expansion and retraction with respective upwardly and downwardly movements of said standpipe, the downwardly movement of said standpipe effecting the retraction and compression of said reservoir and with said other end of said standpipe acting against said valve means to open fluid flow through said hydrant, the upwardly movement of said standpipe elevating the same from contact with said valve means permitting it to close and simultaneously expanding said reservoir whereby fluid in said standpipe upon closing of said valve means drains therefrom into said reservoir for storage, a fitting means secured to the lower end of said casing and adapted for flow communication with the source of fluid under pressure, said fitting means having an orifice plug with an externally threaded neck extended into the lower end of said casing, and said valve housing being removably threadably attached to said threaded neck whereby an assembly comprising said head section, standpipe, bellows reservoir and valve housing with valve means can be manually rotated to remove said valve housing from said fitting means to permit withdrawal from said casing as a unit said assembly for purposes of repair or maintenance.

Claim 7

A yard hydrant, comprising: a casing having an upper and lower end, a valve housing with a spring loaded valve means therein in the lower end of said casing and operatively connected to a source of fluid under pressure, a head section including an integral nozzle, means for arranging said head section relative to the upper end of said casing for vertical reciprocation and rotation relative thereto, a longitudinal expandable and retractible bellows fluid reservoir having an upper and lower end arranged within said casing including means attaching the Lower end of said reservoir to said valve housing, a standpipe within said casing having one end secured to said head section in flow communication therewith and its other end extended through the upper end of said reservoir and terminating within said reservoir, said standpipe being vertically reciprocal with corresponding movement of said head section, means connecting the upper end of said reservoir to said standpipe for expansion and retraction with respective upwardly and downwardly movements of said standpipe, the downwardly movement of said standpipe effecting the retraction and compression of said reservoir and with said other end of said standpipe acting against said valve means to open fluid flow through said hydrant, the upwardly movement of said standpipe elevating the same from contact with said valve means permitting it to close and simultaneously expanding said reservoir whereby fluid in said standpipe upon closing of said valve means drains therefrom into said reservoir for storage, a fitting means secured to the lower end of said casing and adapted for flow communication with the source of fluid under pressure, said fitting means having an orifice plug with an externally threaded neck extended into the lower end of said casing, and said valve housing being removably threadably attached to said threaded neck whereby an assembly comprising said head section, standpipe, bellows reservoir and valve housing with valve means can be manually rotated to remove said valve housing from said fitting means to permit withdrawal from said casing as a unit said assembly for purposes of repair or maintenance.

Claim 8

A yard hydrant as defined in claim 5 including: a cylinder having an upper and lower end arranged in the lower end of said casing in embracing relationship to said bellows reservoir to hold it against radial expansion, means for operatively securing the lower end of said cylinder to said valve housing, the upper end of said cylinder being provided with a notch, a lug key secured to said standpipe at a point thereon whereby in downwardly movement of said standpipe said lug key is engaged in said notch to effect a turning force at the upper end of the cylinder and facilitate the removal of said assembly including said cylinder.