An Apparatus for Transferring one Kind of Measurement into Another System.
Year: 1887

page_text: An Apparatus for Transferring one Kind of Measurement into
Another System.
I, HEINRICH HAGEMANN, of No. 27 Grossbeeren Strasse, Berlin, Germany,
Engineer, do hereby declare the nature of my 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 an apparatus for transferring one kind of measurement into
another system and for this purpose two graduated scales are employed one of which
is arranged on the periphery of the crank guide, the other on the surface of a rail
running the entire length of the spindle which is so provided with an adjustable
pointer slide that the same can be made to traverse the entire length of the spindle
when the latter is operated by means of the crank.
If for instance it is desired that my apparatus be employed for adding up the
length of single words or whole lines on the metrical system the length or transverse
dimensions of the letters in typographical units being known the graduated rail or
scale is divided into millimetres and centimetres whilst the pitch of the screw is so
arranged that if the ratchet wheel is moved by one tooth the slide carrying the pointer
or indicator will be moved a distance corresponding with the dimensions of one
typographical unit.
the
Figure 1 is a top view of my apparatus, Figures 2 and 3 are sections on
lines 2-2 and 3-3.
The slide with pointer or indicator b is provided with suitable female threads or
half threads so that the same can be readily removed from and replaced in any
desired position on the screw spindles which has its bearings in the two ends of the
apparatus and is operated by an appropriate crank a' with bandle a³ or its equivalents.
A graduated rail or scale c is arranged parallel to the spindle so that the pointer of
the indicator on the slide will stand in correct position to the graduations on the
rail. The slide is provided with an appropriate dovetail or other groove in which
the foot of the pointer or indicator 6' glides.
The crank a is provided with a pointer or indicator at which moves above the
graduations d on the periphery of the one end of the apparatus the crank being guided

page_text: in the groove by the journal to the handle a³ of the crank a' which latter is loosely
attached to the journal of the spindles and is provided with a pawl a² which gears
into the toothing of the ratchet wheel a on the spindle s. The number of teeth in the
ratchet wheel a corresponds with the graduations d on the periphery of the end piece
of the apparatus. If the crank a¹ is turned in the one direction the spindle s will be
compelled to move with the same whilst a pawl e pressed into gear with the ratchet
wheel by a suitable spring prevents all backward movement of the wheel a and
spindle s. The movement of the crank a' is limited by the length of the curved
slot d through which as aforesaid, the arm or journal of the handle passes and in
which the same is guided.
с
My apparatus can be applied to great advantage as auxiliary-apparatus to my
matrice stamping machine or in compositiong generally where types are employed the
breadth of which is divided into typographical units and serves to add up the length
of single words or entire lines and to give the same in metrical measure for which
purpose the graduations on the rail care in millimeters, whereas the pitch of the
threads on the screw spindle corresponds with the typographical measure so that when
the ratchet wheel a is rotated one tooth, the slide 6 will receive a movement equal to
one typographical unit. The letter N is for instance 7 typographical units broad and
in order to ascertain this measurement in millimeters I proceed as follows:-The
pointer at of the crank a' being at zero on the graduations d and the pointer 61 of
the slide bat zero on the graduations of the rail e the handle a³ and consequently the
crank and pawl a² are moved so that the pointer a' of the crank a' stands opposite
to the figure on the graduations d during which time the pawl a² will glide easily
over 7 teeth of the ratchet wheel a which is held in position by the pawl e. If now
the handle a³ to the crank al is moved back so that the pointer again stands at zero
on the graduations & the pawl a² will have moved the spindles and through the same
also the slide and pointer & a distance in millimeters as per the graduations on the
rail & equal to the 7 units previously indicated by the graduations d. The other
letters and spaces are measured in like manner so that a compositor or an operator at
the matrice stamping machine can by means of my apparatus accurately ascertain the
space required by a letter, word, sign, sentence or part of the same in a line and can
in this manner regulate or adjust the length of the same in absolutely mathematically
correct manner by choosing the appropriate spaces.
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 adding up measurements on one system of measurement and
indicating the equivalents of the same in another system of measurement, characterised
by the device by means of which the movement of a screw spindle-being limited to
the number of units to be measured is communicated to a slide the pointer or indicator
of which will indicate the corresponding measurement on the other system on an
appropriate graduated rail or scale, substantially as described in the foregoing
specification and shown in the accompanying drawing.
Dated this 22nd day of April 1887.
PHILIP M. JUSTICE,
Associate Agent.