US Patent: 9,068X
|
| Steam engine
|
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Granted: |
Sep. 09, 1835 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
"Vintage Machinery" entry for John Bennock
|
|
Description: |
| Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2000 of the almost 10000 documents were recovered. This is one of the recovered patents.
For a Rotary Steam Engine; John Bennock, Orono, Penobscot County, Maine, September 9.
"A circular channel for a piston to revolve in is formed by bolting together two metallic rims, each of which contains one half of the channel turned perfectly true. These two parts are connected by bolts through Handles outside of the circular rim only, those on the inside not being in contact, but so far apart as to allow the flat rim of an interior wheel to be interposed between them; this wheel revolves on an axis passing through the centre of the circular channel, above mentioned, its periphery just reaching it, and having attached to it the revolving piston. Metal rings, inserted in grooves, and borne up by screws, are to be employed as packing against the sides of the interior wheel. A sliding valve, contained in a valve box, is withdrawn to allow the piston to pass, being acted upon by cams on the main shaft. There are, of course, proper openings for the introduction and escape of steam.
The machine is to be doubled, there being two circular cavities with their pistons, and other appendages, but having their valves in reversed directions, that the full action of the steam may always be upon one of them; the same main shaft is to carry both of the piston wheels. The claims made are to the using of two circular channels; the arrangement of the valves and pistons; the metal rings for packing, contained within grooves in the inner flanches, and the mode of pressing them up.
There is nothing new in this engine, either in the general construction, or in the particular points claimed. We could refer to engines essentially the same, in several published works treating on steam engines; but the worst feature of the affair is that neither of those which it resembles have answered in practice, whilst that now presented to use does not appear to contain any redeeming point. It will be much more difficult to make than the ordinary engine, more difficult also to keep in order, and it will require considerably more steam to perform the same quantity of work."
Description from the Journal of the Franklin Institute Vol 17, 1836 pg 254 |
|
