Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit

old patents....

jpf321jpf321 Posts: 1,551Member
As I find interesting old patents, I will post them here...

Gorton Radiator Vent Valve - 1950 issueGorton Radiator Valves - 1955 issueGorton Steam Radiator Valves - 1965 issueHoffman Swivel Tube Connection - 1931 issueImprovements in Steam Radiators - 1877 issueHoffman Valve for Steam Heating Systems - 1904 issueHoffman Automatic Air Valve - 1908 issue

Hoffman Automatic Air Valve - 1918 issue

Hoffman Air Valve Lock - 1928 issue

Hoffman Thermostatic Steam Trap - 1931 issue

Hoffman Faceless Valve - 1935 issue

Hoffman Boiler Return Trap - 1935 issue

Hoffman Steam Trap - issue 1936

Hoffman Thermostatic Relief Valve - issue 1936

Hoffman Adjusting Means for Air Valves

Hoffman Adjustably Vents Air Valve - 1940 issue

If anyone finds other interesting ones, please post .. a great resource is
Entire Site | MAIN WALL | Strictly Steam | Off-Wall

1-pipe Homeowner - Queens, NYC

NEW: SlantFin Intrepid TR-30 + Tankless + Riello 40-F5 @ 0.85gph | OLD: Fitzgibbons 402 boiler + Beckett "SR" Oil Gun @ 1.75gph

installed: 0-20oz/si gauge | vaporstat | hour-meter | gortons on all rads | 1pc G#2 + 1pc G#1 on each of 2 mains

Connected EDR load: 371 sf venting load: 2.95cfm vent capacity: 4.62cfm

venting worksheet download | Lost Art Of Steam Heating | my NEW system pics | my OLD system pics | old patents | pipe size chart | Copper Size Chart: K,L,M


  • Big-Al_2Big-Al_2 Posts: 263Member

    I enjoyed those, especially the diagram of the steam radiator with built in "chimneys" to induce air movement.  Very cool idea . . .
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!