Improvements in. Carpenters' Gauges.
Year: 1895

page_text: Date of Application, 19th Oct., 1895
Complete Specification Left, 15th May, 1896-Accepted, 4th July, 1896
PROVISIONAL “SPECIFICATION.
Improvements in. Carpenters' Gauges.
I, JAMES BUTCHER, of No. 17 Sheridan Road, Hove, in the County of Sussex,
Turner and Joiner do hereby declare the nature of this invention to be as follows :—
My invention relates to improvements in carpenters gauges.used for the purpose
of marking, for tenoning and morticing.
The gauges.at present.in use usually consist of a har of circular or other shaped
wood or metal provided with an adjustable sliding head which is fixed at any desire.
distance by means of a wedge driven in betwoon the bar or stem. and the adjustable
head. This system of fastening by means of a wedge.is however very unsatisfactory
as often whon not securely driven.in it becomes loose and allows the sliding..head. to
move from the position intended; also the constant knocking, and tightening of the
wedge quickly wears out the gauge. Thore are also other gauges in .nse which can
be adjusted by means of thumb sorews in place of.the.wedge.
"
It is the defect above mentioned which it is my intention to remedy in my
invention. To do this I-niake use of the ordinary cylindrical bar or "stem as it
is sometimes called of any desired length and of wood, metal or other suitable
material. This bar is provided with a screw thread throughout its length and at
one end is fixed a circular blade round the oircumference of the stem used for
marking the timber. to be cut. On the stem Laplace two nuts made proferably of
the same material as that of tho stem and both provided with a screw thread so
that they can be adjusted by the notion of the band.
In working.my invention. I screw the top.nut (that is to say the one nearest ithe
blade) to the required distance from the blade which is to be marked on the timber.
then, sorow up the other nut ("looking.nut" as: it is technically termed) until the
two are close together when by a slight twist of the hand the two are fixed tightly
together and it is impossible for them to become unlocked in the course of the
work, but can be easily done by the operator turning.the.looking nut in the reverse
direction to that which fastened the two together.
In applying my invention to.morticing gauges I make use of two additional guts
which are much smaller than those previously mentioned and made of steel. They
Bre similarly provided with a screw thread and are placed on the stem before the
larger or principal nuts are screwed on. The morticing nut is also provided with
a sharp circular blade.and a slight projection to prevent the fingers being cut
when adjusting the gauge. 1.place the mortioing.nut at the required distance from
the fixed blade at the end of the stam which is required to be marked on the timber.
Iscrew up the smaller looking nut and fasten the two as previously described; then
the two principal nuts are, adjusted so that the two.. blades mark where the mortice
has to be cut at the required distance.from the edge of the timber.
Dated thin 19th dan of Ontahan 1905

page_text: to prevent the fingers being cut 'when adjusting the gauge. I place the morticing-
nut g at the required distance from the fixed blade 6 at the end of the stem ‘a' which
is required to be marked on the timber. I screw up the smaller locking nut 'h' and
fasten them ('A' and 'g') in the manner previously described for the larger nuts,.
then the two principal nuts 'c' and 'd' are adjusted so that the blades ‘¿ ³ and ‘'
mark where the mortice has to be cut at the required distance from the edge of the
timber.
Having now particularly described and ascertained the nature of my said inven--
tion and in what manner the same is to be performed, I declare that what I
claim is :-
First. A carpenters gauge consisting of a stem, circular blade, (spike or pin) and
two nuts; the stem and nuts being provided with sorew threads as above described
and illustrated in the accompanying drawings.
Second. A carpenters morticing and tenoning gauge consisting of a stem, cironlar ·
blade, (spike or pin) 2 large nuts and 2 smaller ones; one of the smaller nuts having
a circular blude and finger piece and the stem and nuts being provided with sorew
threads as above described and illustrated in the accompanying drawings.
Dated this 14th day of May 1896.
JAMES BUTCHER,
Applicant.