Improvements in Slide-gauges.
Year: 1891

page_text: Date of Application, 8th Dec., 1891
Complete Specification Left, 6th Sept., 1892-Accepted, 8th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Slide-gauges.
I, GOTTHILF BAUER of Oberesslingen in the Kingdom of Wurtemberg,
Mechanic, do hereby declare the nature of this invention to be as follows :--
My invention relates to means in slide gauges which allows the sliding jaw to be
easily adjusted and yet when this movement has been effected will automatically
retain the jaw fixed to the graduated bar.
In order to attain this object in the one case, the jaw must easily move on the
graduated bar of the gauge, or in the other case, on the contrary, it may be pressed
against the same. As both of the calliper jaws of the gauge must be exactly
parallel, the sliding one which has a little play so that it can slide easily, must be
pressed evenly against the other one.
If therefore a spring be applied to the sliding jaw, the fixing of this jaw takes
place by means of this spring being automatically pressed about its centre on the
graduated bar.
For this purpose a great number of devices may naturally be employed, such as
springs, wedges, eccentrics, etcetera, but I have found a lever device to be the most
preferable, in which a projection situated on the centre of the spring is pressed down
by the shorter arm of the lever, in such a way that a spring lying under the
lever acts on the end of its longer arm. The lever is pivoted in a countersunk slot
arranged on the sliding jaw and according as the length of the two lever arms comes
into action, the pressure of the spring lying under the lever is transferred to the
spring lying against the graduated bar, whilst it requires only a slight pressure on
the lever shank in order to release such spring and thereby render the jaw capable
of easy adjustment.
In order that the spring lying against the graduated bar may be easily released
on only a slight turn of the lever, the projection on the same is made somewhat
inclined at the point of its contact with the spring.
Further for the easier adjustment of the gauge, the under parts of the sliding jaw
are widened in any suitable manner; in such a way that if the jaw be gripped by the
thumb and index finger, the adjustment of the same may be easily performed with
one hand. Of course instead of the spring in the adjustable jaw the opposite part
of the slide may be pressed onto the slide arm.
Dated this 7th day of December 1891.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Slide-gauges.
I, GOTTHILF BAUER of Oberesslingen in the Kingdom of Wurtemberg,
Mechanic, 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 :-
My invention relates to means in slide gauges which allows the sliding jaw to be
easily adjusted and yet when this movement has been effected will automatically
retain the jaw fixed to the graduated bar.
This improved slide gauge is shown on the accompanying drawing, in which,
TRA

page_text: Figure 2 a view from beneath, and
Figure 3 a view of the fastening mechanism on an enlarged scale.
In order to attain this object in one case the sliding jaw B must easily move on
the graduated bar a' of the gauge A, or in the other case, on the contrary, it may
be pressed against the same. As both of the calliper jaws a and b of the gauge
must be exactly parallel, the sliding part B which has a little play so that it can
slide easily, must be pressed evenly against the other one a.
If therefore a spring / be applied to the sliding jaw B, the fixing of this jaw takes
place by means of this spring being automatically pressed about its centre on the
graduated bar a¹.
For this purpose a great number of devices may naturally be employed such as
springs, wedges, eccentrics, etcetera, but I have found a lever device to be the most
preferable, in which a projection situated on the centre of the spring f is pressed
down by the shorter arm of the lever C in such a way that a spring d lying
under the lever acts on the end of its longer arm . The lever C is pivoted at o in
a countersunk slot arranged on the sliding jaw B and according as the pressures, as
shown projected at land 12, of the two lever arms ec2 come into action, the
pressure of the spring d lying under the lever is transferred to the spring flying
against the graduated bar, whilst it requires only a slight pressure on the lever
Blank in order to release such spring and thereby render the jaw B capable of
easy adjustment.
In order that the spring flying against the graduated bar may be equally easily
released on only a slight turn of the lever C, the projection on the short arm of
the lever c is made somewhat inclined at the point of its contact with the
spring.
Further for the easier adjustment of the gauge, the under parts bb' of the sliding
jaw B are widened in any suitable manner; in such a way that if the jaw be gripped.
by the thumb and index finger, the adjustment of the same may be easily performed
with one hand. Of course instead of the spring in the adjustable jaw the opposite
part of the slide may be pressed onto the slide arm.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The improvements in slide gauges which consist in providing such with a
device, for automatically fixing the sliding jaw on the graduated bar, in which the
automatic pressure of a spring is indirectly transferred to the sliding jaw by
means of eccentrics, wedges or a lever, substantially as described.
2. In a slide gauge of the kind described in Claim 1, widening out the lower part
of the sliding jaw B at bb' thereby enabling a more convenient adjustment of the
sliding jaw to be performed with one hand.
Dated this 5th day of September 1892.
M. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.