Year: 1897

page_text: CHARLES WILLIAM SUMMERSKILL, Manufacturer, Plume Street, Aston, and
JOHN HERBERT WYNN, Manufacturer, Commercial Street, Birmingham, do hereby
declare the nature of this invention to be as follows:―
An improved calliper gauge for measuring thickness of tube, wire or sheet
metal or any article requiring accurate measurement, made in the form of a plier,
the noses of which are in the form of a calliper, made to close on the article to be
measured; and the handles of same cross over one another & one or both handles
are marked with various rules or measures as required; the point of junction
between the two handles shewing on the scale the distance between the said jaws.
Dated this 12th day of October 1897.
CHARLES WILLIAM SUMMERSKILL.
JOHN HERBERT WYNN.
We, CHARLES WILLIAM SUMMERSKILL, of Plume Street, Aston, Birmingham,
Manufacturer, and JOHN HERBERT WYNN, of Commercial Street, Birmingham
aforesaid, Manufacturer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement, reference being had to the drawing,
accompanying this specification:
-
Our invention consists in an improved calliper gauge for measuring the thick-
ness of tubes wire or sheet metal or any article requiring accurate measurement.
The said calliper gauge is made in the form of a pair of pliers consisting of two
sides A A, the noses of which are in the form of a calliper as shewn at A¹ A', and
which are pivotally connected by a rivet, B, the calliper gauge closes on the article
to be measured by the manipulation of the sides or handles A A. The said sides
or handles cross the one over the other and one or both sides or handles are marked
with various rules or measures as required. This being the case the point of
junction between the two sides or handles where they cross over indicates on the
scale as at, C, the relative distance between the said calliper jaws A' A¹. We may
remark that the measuring scale may be upon any convenient portion of the sides
or handles though preferably upon one of the edges as shewn.
With our improved instrument the thickness of any material whether in the
form of tube sheet or wire can be accurately and instantly measured to the standard
wire gauge sizes or any other sizes.

page_text: Furthermore by the use of our gauge we are able to measure the thickness of a
piece of tube or sheet metal over the burr made in cutting the tube and it can be
used on small tubes where it would be impossible to use an ordinary wire gauge.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is: :-
I. A calliper gauge for measuring the thickness of tubes, wire sheet metal or
any other article requiring accurate measurement arranged and operating as and
for the purpose substantially as herein set forth.
II. A calliper gauge for measuring metal and the like or other material con-
sisting of two sides pivotally connected and having a scale marked on one or both
sides for indicating the distance between the callipers or noses of said sides when
measurements are being made and operating substantially as and for the purpose
or purposes herein described.
Dated this 10th day of May 1898
EDWD. J. PAYNE & SON,
Warwick Chambers, 104, Colmore Row, Birmingham,
Patent Agents for the Applicants.
EDWD. J. PAYNE & SON,
Warwick Chambers, 104, Colmore Row, Birmingham,
Patent Agents for the Applicants.