In 1740 he invents the Franklin stove, refusing a patent on the device because it was for "the good of the people". He proposes an academy, which opens after money is raised by subscription for it and it expands so much that a new building has to be constructed for it. Franklin obtains other governmental positions (city councilman, alderman, burgess, justice of the peace) and helps negotiate a treaty with the Indians. After helping Dr. Thomas Bond establish a hospital, he helps pave the streets of Philadelphia and draws up a proposal for Dr. John Fothergill about doing the same in London. In 1753 Franklin becomes Deputy Postmaster General.