of Pipes and Conduits.
Year: 1887

page_text: inte of Application, 7th July, 1887
Complete Left, 4th Apr., 1888
Complete Accepted, 15th June, 1888
of Pipes and Conduits.
1, WILLIAM HENRY BECK, of 115 Cannon Street, in the City of London, Consulting
Engineer and Patent Agent do hereby declare the nature of this invention to be as
follows:-
The apparatus forming the subject of this invention enables the internal condition
of pipes and conduits to be ascertained with certainty at any time without having to
put them out of use while the examination is being made. It consists, as shown in
the two sheets of Drawings hereto annexed, of a tap or cock B, the plug A of which
is furnished with two semicircular notches c¹ and 2 and is plac ad either perpendicularly
with respect to the length of the pipe a a as shown in Figures 1, 2 and 3, or parallel
thereto as shown in Figures 5, 6, 7 and 8.
1
2
2'
When the plug A of the tap is made of material different from that of which tho
pipe to be examined is made, lining pieces c¹ and 2 of the samo
material as that of which the pipe a a is made, are fitted in the semicircular notchies c¹
and 2 of the plug A. But when the plug of the tap is made of material having the
same properties as that composing the pipe, these lining piecos in the plug may he
dispensed with.
1
In the arrangements shown in Figures 1, 3, 7 and 8, it will be seen that the notches e
and of the plug A, or their linings, fit to the notched parts c', c, e of the pipe
that it is required to examine so exactly that when the plug of the tap is turned 180
degrees, one notch takes the place of the other perfectly, that is to say, it completes
the pipe.
In order to apply the apparatus to a pipe that it is desired to inspect, the said pipe
is cut and the two ends connected by solder or otherwise to the two ends of the portion
of pipe a a.
When the pipe has been used a certain length of time with the plug A

page_text: placed in the positions shown in Figures 1 and 8, so that during that time the surfaces
of the notches e, or of their linings, as the case may be, are exposed like the rest of
the internal surface of the pipe to any deposit caused by the liquid passing through
it, the internal condition of the pipe can be inspected by turning the plug A 180
degrees thereby bringing the semicircular notches e into the position previously
occupied by the noteles e so that the pipes are made good again as in Figures 1
and 8, while the trial surfaces e¹, e, e¹¹ being turned outwards, can be examined with
great ease.
1
1
After the completion of the inspection, the plug A is returned into the position
shown in Figures 1 and 8.
The handle G may he provided with means for preventing it from being turned by
unauthorized persons, for example, as shown in Figures 2 and 5, a lead wire 7 may
be passed through it, the ends of the said wire being flattened out by means of pincers
furnished with any suitable stamp.
When the apparatus is intended to serve as an administrative check, or generally
whenever a subsequent inspection of the trial surface is necessary, the plug A is
not returned to its original position immediately after the inspection, but the inspection
door H, Figures 1, 3, 5 and 6, is closed, and secured against being tampered with in
the same way as the handle G. In the meantime, the surface c, enables the use of the
pipe to be continued without difficulty.
Dated this fith low of July 1887

page_text: COMPLETE SPECIFICATION.
New or Improved Apparatus for Ascertaining the Internal Condition
of Pipes and Conduits.
I, WILLIAM HENRY BECK, of 115 Cannon Street, in the City of London, Consulting
Engineer and Patent Agent do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the accompanying two
sheets of drawings and to the letters and figures marked thereon, that is to say :-
The apparatus forming the subject of this invention enables the internal condition
of pipes and conduits to be ascertained with certainty at any time without having to
put them ont of use while the examination is being made. It consists, as shown in
the two sheets of drawings hereto annexed, of a tap or valve B, the plug or slide A of
which is furnished with two semicircular hollows or notches and e², and is placed
either perpendicularly with respect to the length of the pipe a a, as shown in Figures 1,
2 and 3, or parallel thereto, as shown in Figures 5, 6, 7 and 8.
11
When the plug or slide A of the tap or valve is made of material different from
that of which the pipe to be examined is made, lining pieces el cell and c
of the same material as that of which the pipe aa is made, are fitted in the semi-
circular notches e¹ and e² of the plug A. But when the plug or slide of the tap or
valve is made of material having the same properties as that composing the pipe,
these lining pieces in the plug may be dispensed with. Figure 4 is an elevation of the
plug A (shown in section in Figure 1) with one of its hollows or notches not provided
with lining pieces.
of
In the arrangements shown in Figures 1, 3, 7 and 8, it will be seen that the hollows
or notches e¹ and 2 of the plug A or their linings, fit to the notched parts e, e, e¹¹
the pipe that it is required to examine, so exactly that, when the plug of the tap is
turned 180 degrees, one notch takes the place of the other perfectly, that is to say it
completes the pipe.
In order to apply the apparatus to a pipe that it is desired to inspect, the said pipe
is cut, and the two ends connected, by solder or otherwise, to the two ends of the portion
of pipe a a.
When the pipe has been used a certain length of time with the plug A
placed in the positions shown in Figures 1 and 8, so that during that time the surfaces
of the notches c', or of their linings, as the case may be, are exposed, like the rest of
the internal surface of the pipe, to any deposit caused by the liquid passing through
it, the internal condition of the pipe can be inspected by turning the plug A 180
degrees thereby bringing the semicircular notches into the position previously
occupied by the notches e¹, so that the pipes are made good again, as in Figures 1
and 8, while the trial surfaces c¹, c₁e", being turned outwards, can be examined with
great ease.
After the completion of the inspection, the plug A may be returned into the
position shown in Figures 1 and 8.

page_text: Means may be provided for preventing the plug A from being turned by unauthorized
persons for example the handle G may be passed through the hole A' in the stem A²
of the plug A until its end G¹ comes opposite the stop X as shown in Figures 2 and 6,
in which position the said handle prevents the plug from being turned; a lead wire
is thon passed through the stem A2 and the handle G and the ends of the said wire
flattened out by means of pincers furnished with any suitable stamp so as to prevent
the said wire from being withdrawn without spoiling such stamp.
When the apparatus is intended to serve as an administrative check, or generally
whenever a subsequent inspection of the trial surface c, is necessary, the plug A is
not returned to its original position immediately after the inspection; but the inspec-
tion door H Figures 1, 3, 5, 6, 7 and 8 is closed, and secured against being tampered
with by means similar to those above described in reference to the handle G. In the
meantime the surface enables the use of the pipe to be continued without difficulty.
If desired the parts intended to be inspected may be made wholly or partly removable
from the plug or slide A, so that when turned outwards towards the inspection opening
they may be removed to a laboratory for instance, to enable the substances deposited
on them to be more closely examined than when the said parts remain connected with
the said plug or slide.
The arrangements hereinbefore described, and illustrated in the Drawings, are given
by way of example, but it is obvious that they may be varied without departing from
the nature of the invention.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what
I claim is :-
:-
The new or improved apparatus for ascertaining the internal condition of pipes and
conduits, consisting of a tap or valve, the plug or slide of which is formed with
hollows or notches, and so placed and adapted in relation to the pipe to be examined,
that the surface of either of the hollows or notches, or of the lining thereof, can be
exposed to view, while the surface of the other hollow or notch, or of the lining
thereof, forms a part of the internal surface of the pipe or conduit substantially as
herein before described, and illustrated in the drawings hereto annexed.
Dated this 4th day of April A.D. 1888.
W. H. BECK,
115, Cannon Street, London, E.C.,
Applicant.