Year: 1886

page_text: I CARL BERGMANN manufacturer, of Guben in the Kingdom of Prussia and
German Empire 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 :-
The measuring apparatus forming the object of my Invention enables the internal
diameter or size of hats to be ascertained with great facility and accuracy. For this
purpose the apparatus is provided with a band or spring of steel or other flexible
material which is coiled in the interior of the hat that is to be measured and being
caused by suitable mechanism hereinafter described to be applied against the internal
periphery of the hat imparts a corresponding motion to an index or pointer which
indicates the dimensions of the hat upon a graduated scale or dial.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed Sheet of Drawing the same of letters of reference
indicating corresponding parts in all the figures.
Figure 1 of the accompanying drawing represents an elevation partly in section
of an apparatus constructed according to my invention and Figure 2 represents the
said apparatus in plan.
This apparatus is provided with two toothed wheels or pinions a and b gearing
with rack teeth on a sliding frame or bar c. On the axis of the wheel a there is
fixed a horizontal arm or lever d to the extremity of which is attached one end of
a flxible band e of steel or brass for example. This band is secured at its other
extremity at x to a frame or platform g forming a support for the hat that is to be
measured. The axis of the wheel b carries an index or pointer f travelling over a
graduated segment 8. To the frame or bar c is jointed a bar h jointed to the stand
or support of the apparatus at i and the upper part of the apparatus is capable of
being turned or rocked bodily upon an axis k on the said stand or support.
I will now describe the action of the apparatus. After the hat that is to be
measured is placed upon the platform g as indicated at the upper part of the
apparatus is tilted on the axis k by depressing a handle and the frame c being
attached to the bar h which is jointed to the fixed point i is thereby caused to slide
outwards or towards the left hand in the drawing so that the rack teeth on the
said frame impart rotary motion to the two wheels a and b. The rotary motion

page_text: a
thus imparted to the wheel a and arm d uncoils or expands the band e and applies
it forcibly against the internal surface or periphery of the hat. At the same time
the wheel b is rotated to a corresponding extent and the index f indicates the
internal dimension of the hat upon the divisions on the scale 8.
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 :-
An apparatus for measuring hats wherein the size of the hat is ascertained by
means of a flexible coiled or spiral band which being applied against the internal
surface or periphery of the hat operates an index or pointer by the intervention of
suitable mechanism substantially as hereinbefore described and illustrated in the
accompanying drawings.