Manufacturers Index - John Bennock
John Bennock
Boston, MA, U.S.A.
Manufacturer Class:
Wood Working Machinery
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X628
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Jun. 01, 1805
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Planing by machinery
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John Bennock |
Boston, MA |
This patent and 629, both issued on the same date, are the first two US patents for wood planing machines. Both patents are lost and very little is known about them.
This patent's specification and drawings were lost in the Patent Office fire of December 1836, and so little is known about this patent.
A correspondent provided us with the following text from the specification of this patent."The Schedule referr'd to in these Letters Patent & making part of the same containing a Description in the Words of the said John Bennock himself of his 'Improvement in planing, applicable to all kinds of work requiring to be planed.'
"I do hereby declare that the principle of my Invention consists in moving any number of planes by appropriate machinery from one end of the Board (or whatever else is to be planed) to the other, & causing the Boards &c to pass under the planes a little way between Stroke in a direction at right angles to the motion of the planes whereby every part of the Boards &c come successively under each of the planes, and each plane taking deeper than the proceeding one, the Boards &c after passing under the whole will be compleatly planed. When rabbits, mouldings &c of any kind are to be planed the piece they are to be made of will remain fixed while the planes will be made to take deeper each Stroke until the mouldings &c are compleated. Boards &c to be slit in a similar manner. The machine to be moved by a fall of water, Steam Engine, or any other convenient power.—
"The Advantages of the improved method of planing are numerous and important, one of very great consequence is the using of water Steam &c in place of Men as moving powers, whereby a much greater quantity of work can be executed in the same time, and the Boards &c are also much better planed than by hand, being made equal in thickness, and also very smooth.—
"These Advantages are applicable either in whole or in part of everything that requires to be planed.—" |
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X9,068
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Sep. 09, 1835
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Steam engine
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John Bennock |
Orono, ME |
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 |
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