Improvements in or connected with Apparatus for Numerical Printing.
Year: 1890

page_text: Date of Application, 11th Nov., 1890
Complete Specification Left, 11th Aug., 1891-Accepted. 12th Sept
4004
PROVISIONAL SPECIFICATION.
Improvements in or connected with Apparatus for Numerical
Printing.
We, JOHN PHILLIPS, Mechanical Engineer, and FREDERICK HORNBY,
Manufacturer, both of 166 Walworth Road, in the County of London, do hereby
declare the nature of this invention to be as follows:-
-
This invention relates to apparatus for printing consecutive or alternate numbers
on the pages of books, or on tickets, checks and other documents.
Such an appliance chiefly comprises a series of parallel type discs or rings
mounted on a cylindrical hub and adapted to turn thereon, each disc having on its
circumference 10 (or other convenient number of) raised numerals from 0 to 9,
the first disc representing the units, the second the tens, the third the hundreds
and so on.
In order to secure the type discs in the required position for printing, each type
ring has on its inner surface 10 equidistant notches and the hub has a spring bolt
with conical head fitting into any of the said notches, the said bolt projecting from
a diametrical bore of the hub and being pressed outward by a helical spring
situated behind the bolt.
If the hub is a solid cylinder of steel, it is difficult and expensive, to drill the
diametrical holes with the necessary accuracy, and if made of brass, as usual, the
mouth of the said hole will soon become oval through wear and tear, moreover it is
well known, that metals of the same nature, such as brass and brass, work together
with more friction than dissimilar metals.
To avoid these drawbacks, we make the hub of two parts, namely a core of brass
or other soft material, and a ring of steel or other hard material, and drill the
holes diametrically through the steel ring, before shrinking it on to the brass core.
This improvement not only renders the wearing surface much more durable, but
t also facilitates greatly the work of drilling the hub, as the steel bushes answer
he purpose of a most accurate "template" for guiding the drill through the
rass core.
The type discs or rings are frequently made of steel to reduce wear and tear and
hereby to maintain the accuracy of printing, but if the printing surface rests on a
ielding support, for instance a cushion of wood and india-rubber, as described in
Phillips' Patent No. 4421 dated 13 March 1889, the shocks are diminished, the
aterial of the type disc or ring need not be so hard, and these costly rings of steel
re not necessary. The type discs may also be made of two parts, namely an
ner ring or bush, and an outer ring which carries the type.
Dated this 10th day of November 1890
FAIRFAX & WETTER,
433, Strand, London. Agents for the Ánnliconi
COMPLETE SPECIFICATION.
Improvements in or connected with Apparatus for Numerical
Printing.
We, JOHN PHILLIPS, Mechanical Engineer, and FREDERICK HORNBY,
Manufacturer, both of 166, Walworth Road, in the County of London, 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:-
This invention relates to apparatus for printing consecutive or alternate numbers
on the pages of books, or on tickets, cheques, and other documents.
Price 4

page_text: Such printing apparatus exists in many varieties, many are worked by hand,
others by means of a treadle and others by means of engine power. It may be
constructed in duplicate, triplicate etc., so as to print two, three, or inore numbers
at the same time.
An example of a multiple printing machine is shown and described in the
Specification of Phillips' Patent No. 13,420, dated 17 September 1888.
Each printing apparatus to which our improvement is applicable, comprises as
its most essential parts a series of parallel type discs or rings mounted on a
cylindrical hub and adapted to turn thereon, each disc having on its circum-
ference 10 (or other convenient number of) raised numerals from 0 to 9, the first
dise representing the units, the second the tens, the third the hundreds and so on.
In order to secure the type discs in the required position for printing, it is usual,
to provide each type ring on its inner surface with 10 equi-distant notches and the
hub with a spring-bolt having a conical head which fits into any of the said notches,
the said bolt projecting from a diametrical bore of the hub and being pressed out-
ward by a helical spring situated behind the bolt.
If the hub is a solid cylinder of steel, it is difficult and expensive, to drill the
diametrical holes with the necessary accuracy, and if the hub is made of brass, as
usual, the mouth of the said hole will soon become oval through wear and tear ;
moreover it is well known, that metals of the same nature, such as brass and brass,
work together with more friction, than dissimilar metals.
To avoid these drawbacks, we make the hub of two parts, namely a core of brass
or other soft material, and a ring of steel or other hard material, and we drill the
holes diametrically through the steel ring, before shrinking it on to the brass core.
This improvement not only renders the wearing surface more durable, but it also
facilitates greatly the work of drilling the hub, as the steel bush answers the
purpose of a most accurate "template" for guiding the drill through the brass
core.
The type discs or rings are frequently made of steel, to reduce the wear and tear,
and thereby to maintain the accuracy of printing, but if the printing surface rests
on a yielding support, for instance a cushion of wood and indiarubber, as described
in Phillips' Patent No. 4421, dated 13 March 1889, the shocks are diminished, the
material of the type discs or rings of the numbering heads need not be so hard,
and these costly rings of steel are not necessary. The type discs may also be made
of two parts, namely an inner ring or bush of steel or other hard metal and an outer
ring of softer metal which carries the type.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is :
1. In numerical printing apparatus, the combination of a series or set of type
discs, with a hub consisting of two parts, namely a core of brass and a ring of steel
fixed to the said core, substantially as described.
2. In numerical printing apparatus, the combination of a numbering head having
type discs made of a comparatively hard inner ring and a comparatively soft outer
ring, with a printing table containing a yielding support or cushion, substantially
as described.
3. The method of producing the diametrical holes in the hubs of numbering
heads, composed of a brass core and a steel ring, which consists in drilling the
holes through the steel ring separately, then mounting and fixing the ring on the
core, and subsequently drilling the holes into the core, substantially as described.
JOHN PHILLIPS.
FREDERICK HORNBY.
By Fairfax & Wetter,
433, Strand, London, Agents.
JOHN PHILLIPS.
FREDERICK HORNBY.
By Fairfax & Wetter,
433, Strand, London, Agents.