IMPROVEMENTS IN THE CONSTRUCTION AND APPLICATION OF ECCENTRICS
Year: 1878

page_text: LETTERS PATENT to William Lloyd Wise, of Chandos Chambers, Adelphi, in
the County of Middlesex, for the Invention of IMPROVEMENTS IN THE
CONSTRUCTION AND APPLICATION OF ECCENTRICS." A communication from
abroad by Marcus Löwendahl, of Vienna, in the Empire of Austria, Max
Gutmann, of Dresden, in the Kingdom of Saxony, Empire of Germany, and
Mendel Scharfberg, of Vienna aforesaid.
Sealed the 14th March 1879, and dated the 14th October 1878.
PROVISIONAL SPECIFICATION left by the said William Lloyd Wise at the
Office of the Commissioners of Patents on the 14th October 1878.
sex.
WILLIAM LLOYD WISE, of Chandos Chambers, Adelphi, in the County of Middle-
"IMPROVEMENTS IN THE CONSTRUCTION AND APPLICATION OF ECCENTRICS."
(A communication from abroad by Marcus Löwendahl, of Vienna, in the Empire of
Austria, Max Gutmann, of Dresden, in the Kingdom of Saxony, Empire of
Germany, and Mendel Scharfberg, of Vienna aforesaid.)
According to this Invention two discs are fixed eccentrically to a shaft so as to
leave a space between them. The same shaft carries between the fixed discs a loose
disc having its periphery grooved. The two fixed discs also carry at suitable
distances apart three axes or studs, on each of which is a small disc able to turn
freely having its periphery grooved. The four grooved discs are surrounded by a
ring (herein-after called the eccentric ring) having an internal projection which
takes into the grooves of the four discs.
The size of the eccentric ring and the diameter of the grooved disc on the shaft,
as well as the diameters and relative positions of the smaller discs on the studs, are
calculated in such manner that the said four discs will, with their peripheries, be in
contact with the inside of the eccentric ring, hence they will, on being rotated, run
with their peripherical grooves on the projection of the eccentric ring.
These said four discs will however not be in contact with each other.

page_text: It follows from this arrangement that on the shaft being rotated the eccentric
motion will be transmitted to the eccentric ring by means of the two fixed discs on
the shaft, and by the three small grooved discs between them, the disc on the shaft
forming a point of support without friction for the eccentric ring by reason of that
disc being enabled to turn freely on the shaft.
Inversely, when motion is to be transmitted to the shaft the eccentric ring will
act on the three smaller discs and by them and the two fixed eccentric discs on the
shaft, whilst the disc that is loose on the shaft will, by its rotation, form a point of
support for the ring without friction.
By apparatus according to this Invention motion may be transmitted from one
shaft to another, the rings of the eccentrics on two shafts being connected together
by a connecting rod. In place of either the driving or driven eccentric any other
impulsive mechanism with rotating, rectilinear, or other motion may be employed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said William Lloyd Wise in the Great Seal Patent Office on the 10th April
1879.
"
WILLIAM LLOYD WISE, of Chandos Chambers, Adelphi, in the County of Middle-
sex: IMPROVEMENTS IN THE CONSTRUCTION AND APPLICATION OF ECCENTRICS."
(A communication from abroad by Marcus Löwendahl, of Vienna, in the Empire of
Austria, Max Gutmann, of Dresden, in the Kingdom of Saxony, Empire of
Germany, and Mendel Scharfberg, of Vienna aforesaid.)
This Invention consists in an improved construction of eccentric applicable not
only for imparting from a rotating shaft or body reciprocating motion to another
body, but also for imparting froin a rotating or reciprocating shaft or body rotary
motion to another shaft or body, as will be herein-after explained.
Referring to the accompanying Drawings,
Fig. 1 represents the Invention in side view, one outer disc or circular plate
being removed.
Fig. 2 is a cross section taken in the line A, B, C, D, E, of Fig. 1.
Fig. 3 is a cross section in the line A, B, F, G, D, E, of Fig. 1.
Fig. 4 is a cross section in the line H, I, of Fig. 1.
According to this Invention two discs c, c¹, with bosses, are fixed eccentrically
to a shaft a so as to leave a space between them. The same shaft carries between
the fixed discs c, c¹, a loose disc b having its periphery grooved, as shewn. The two
fixed discs c, c¹, carry at suitable distances apart three axes or studs e, e', e², each
constructed with one collar and a screw thread at each end, as shewn, to receive
nuts for holding the axes or studs securely in their places. On each of these axes
or studs is a small disc (those shewn are marked d, di, d², respectively) able to turn
freely and having its periphery grooved similarly to that of the disc b. The four
grooved discs b, d, d', d², are surrounded by a ring f (herein-after called the
eccentric ring) having an internal projection which takes into the grooves of the
four discs.
The size of the eccentric ring f and the diameter of the grooved disc b, as well
as the diameters and relative positions of the smaller discs d, d', d², are calculated
in such manner that the whole of the said four discs will, with their peripheries, be
in contact with the inside of the eccentric ring f, hence they will, on being rotated,
run with their peripherical grooves on the projection g of that ring. The four
discs b, d, d', d2, will however not be in contact with each other.
It follows from the above-described arrangement that on the shaft a being
rotated eccentric motion will be transmitted to the eccentric ring f by means of the
two fixed discs c, c', on the shaft a and the three small grooved discs d, d¹, d,
between the said fixed discs c, c', the disc b on the shaft a forming a point of
support without friction for the eccentric ring ƒ by reason of that disc being enabled
to turn freely on the shaft.
Inversely, when motion is to be transmitted to the shaft a the eccentric ring f
will act on the three discs d, d, d², and by them and the two fixed eccentric
discs c, c', on the shaft a, whilst the disc b that is loose on the shaft a will, by its
rotation, form a point of support for the ring without friction.
By apparatus according to this Invention motion may be transmitted from one
shaft to another, the rings f of the eccentrics on two shafts being connected together
by a connecting rod, as shewn in Fig. 1, where a is one shaft and the other.
As is obvious in place of either the driving or driven eccentric any other
impulsive mechanism with rotating, rectilinear, or other motion may be employed.
Having described the nature of the said Invention, and the manner of carrying
it into practical effect as communicated to me as aforesaid, I hereby declare that
what I consider to be novel and original, and therefore claim as secured to me under
the herein-before in part recited Letters Patent is, the constructing and arranging

page_text: antifrictional eccentrics, as herein-before described, and illustrated in the Drawings.
I also claim the application of such eccentrics for mechanical purposes, as herein-
before described with reference to Fig. 1.
In witness whereof, I, the said William Lloyd Wise, have hereunto set my
hand and seal, this Ninth day of April, in the year of our Lord One thousand
eight hundred and seventy-nine.
W. LLOYD WISE. (L.S.)