What is Your Oldest Found Patent Date?

Hi Folks,

Have you ever found a Patent Date, and did not
know what it went to?

I have, more than once.

It Took 4 Months To ID My Oldest Patent Find

On 12-29-08 I found this.

July 21, 1863. That is my oldest patent date, to date.

I kept runnin into dead ends. One problem I had is that
it is a British patent, and I did not know it. But, finally, I
discovered what this patent goes to.

I do not have a drawing, but in May, 2009, I found this
description of the device.

English letters-patent No. 1830, dated July 21, 1863, and sealed
Jan. 19, 1864, were granted to William Naylor, of England, for
improvements in safety-valves and in apparatus connected therewith.
The specification describes his invention as consisting, "when using
a spring for resisting the valve from opening, in the employment of
a lever of the first order, one end resting by a suitable pin upon the
safety-valve, and the other end of the lever resting upon the spring,
the end resting upon the spring being bent downwards to an angle
of about forty-five degrees from the fulcrum, so that when the valve
is raised by the steam the other end of the lever is depressed upon
the spring downwards, and at the same time is moved inwards towards
the fulcrum, thus virtually shortening the end of the lever, and there
by counteracting the additional load upon the valve as it is raised from
its seat by the greater amount of compression put upon the spring". He
also describes a contrivance consisting of a lateral branch or escape-
passage for a portion of the steam after it has passed the valve, the
valve being made to project over the edges of the exit-passage, the
projecting edges of the valve being made to curve slightly downwards,
so that the steam on issuing between the valve and its seat will impinge
against the curved projecting portion of the valve, and a portion of it
be directed downwards into the annular chamber surrounding the
central passage, which chamber communicates at once with the branch
exit-pipe, whilst the other portion of the steam ascends past the edges
of the valve. He then says, "By this means I am enabled to avail
myself of the recoil action of the steam against the valve, for the
purpose of facilitating the further lifting of such valve when once
opened; but I wish it to be understood that I lay no claim to such
recoil action, nor to the extension of the valve laterally beyond its
seat."

Are you bored yet?

Well, that is just a part of a water pump.

This is an American patented pump that houses the
British patented device.

The pump was installed at Little Rock Water works in
1886.

Here is a photo of tha boiler for tha water pump.
This boiler is aboyt 25 feet long

Hope that was not too boring, but I am kind of proud of
my ID.

Thanks fer lOOkin,

Tabdog

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