Year: 1895

page_text: I WILLIAM WORBY BEAUMONT of 100, Palace Road, Tulse Hill, London,
Civil Engineer do hereby declare the nature of this invention to be as follows:-
1
My invention relates to apparatus and gearing for the reduction of the high
speed of a motor such as a steam turbine or electric motor to the lower speed of
a driven shaft spindle or mechanism, or for the transmission of the power of such
high speed driver to such spiudlo or mechanism running at a lower speed. On
the end or a part of the motor shaft or a shaft or spindle driven by it at its own
speed I form or attach an excentric generally of small excentricity,
This excentric supports and runs in the boss of a wheal the periphery of which
may be plain or grooved, or provided with suitable teeth, and the said wheel is
surrounded by the enclosing rim of an outer wheel the inside of the rim being
correspondingly plain or grooved or toothed. The inner wheel is prevented
from rotating by suitable means such as a projecting stud or arm, or by means of a
bridle with a suitably held tail, or by double sliding pieces as described by me
in the Specification No. 619 of 1893 and 4204 of 1894, and its periphery may be
covered with firmly adherent leather or other material.
The inside of the rim of the said outer wheel may be lined with firmly adherent
leather or other suitable material. The inner wheel receives a gyratory motion
and the outer wheel a rotary motion at low speed which is conveyed to the spindle
upon which it runs or to which it is fixed. From this spindle the transmitted
power may be taken direct or from a pinion or pulley or through the medium
of the variable speed gear power clutches described in the above mentioned
specifications.
The outer wheel may be pivoted at its centre and given a small range of
flexible movement by connecting to the said spindle or shaft through the medium
of a disc fastened to the spindle and connected to the wheel aforesaid by means of
bolts and springs. Such flexibility may also be secured by the use of thin stamped
or otherwise forined inner and outer wheels. The periphery of the inner wheel and
inside of the rim of the outer wheel may be cylindrical or more or less conical
and the surfaces which come into contact when grooved may be in two or more
widths for purposes of adjustment, and the bearings carrying the shaft or spindles
may be capable of adjustment in the direction of the axis of such spindles as well
as otherwise.
When the excentric which is suitably balanced is not on the motor shaft the
said shaft may drive that which carries the excentric through the medium of a
flexible coupling which may be a fork and a flexible steel rod. In place of the
excentric I may employ a spindle carrying an out of balance weight or weights
to give gyratory motion to the inner wheel by operating in some cases after the
manner of a vibromotor.
Dated this 12th day of November 1895.

page_text: Speed Reduction Gear.
I WILLIAM WORBY BEAUMONT of the Outer Temple 222 Strand London
and of 100 Palace Road Tulse Hill London Civil Engineer 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 apparatus and gearing for the reduction of the high
speed of motors such as steain turbines or electric motors to the lower speed of a
driven shaft spindle or mechanism.. On the end or a part of the motor shaft
or a shaft or spindle driven by it I form or attach an excentric generally
of small excentricity.
The
This excentric runs in the boss of a wheel the periphery of which is surrounded
by the enclosing rim of an outer wheel. The inner wheel is prevented from
rotating by means of an arm suitably guided or by means of a bridle and suitably
guided arm or tail or it may be thus prevented by means of the double orthogonal
sliding pieces as described by me in the Specifications of the Patents granted to
me, Number 659 of 1893, and No. 4204 of 1894. Being thus prevented from
rotating it receives a gyratory motion within the enclosing rim of the outer wheel,
and by contact with it conveys or imparts rotary motion to it at a low speed and
thereby to the shaft upon which it runs or to which it is fixed. From the low
speed spindle last mentioned the transmitted power may be taken direct or by
means of a suitable kind of gearing or through the medium of the variable speed
gear power clutches described in the above mentioned specifications.
periphery of the inner gyrating wheel and the interior periphery of the rotating
enclosing outer wheel rim may be plain or smooth surfaced or they may have
circumferential grooves or may be provided with shallow teeth such as those used
in the epicycloidal gear described in the specifications already mentioned. The
said peripheries instead of being of plain or emooth surfaced metal may be
covered or lined respectively with firmly adherent leather, papier maché, woodite,
or other material suitable for withstanding the rolling pressure between the
surfaces in contact, preferably only the inside of the rim of the outer rotating
wheel would be so lined. The outer rotating wheel may be pivotted at its centre
and permitted a small range of flexible movement so that the frictional grip
between its interior surface and the periphery of the gyrating wheel may be
maintained by elastic pressure. Such flexibility may also be secured by the use of
thin stamped or otherwise formed inner gyrating and outer rotating wheels. The
periphery of the inner and outer wheels may be cylindrical or may be more or
less conical and the surfaces which come into contact when grooved may be in two
or more widths in the interior of the outer wheel for purposes of adjustment and the
bearings carrying the shafts or spindles may be capable of adjustment in the
direction of the axes of such spindles. When the excentric, which may be
suitably balanced, is not on the motor shaft the said shaft may drive that which
carries the excentric by means of a flexible coupling which may be a fork and a
flexible steel rod. In place of the excentric 1 inay in some cases employ a suitable
spindle running in the boss of the interior wheel and carrying an out of balance
weight or weights to give gyratory motion to the inner wheel by operating after
the manner of a vibromotor.
The drawings bereunto attached illustrate in several forms the speed reduction
gear so far described.
1.74Y I
MN:
In these drawing's Figs. 1 and 2 show one form of the gear. In Fig. 1, A is
the motor spindle or a spindle driven by a motor by suitable meaus. On the
spindle A is an excentric portion D which rotates in the bushed boss of
the interior wheel E which is prevented from rotating by means of the arm
or tail F. G is a spindle which it is desired to drive at a low speed compared

page_text: with that of A. On one end of it is the wheel J enclosing the wheel E which
is of somewhat smaller! dimensions the difference in the diameters, depending
upon the difference.desired' between the speed of the shaft A and the driven
shaft G. As shown in Fig. 1 the contact surfaces of the wheels E and Jare
made slightly conical so that by means of the adjusting screws L, L the
internal wheel may be caused to press with more or less force against the interior
surface of the enclosing wheel J. The spindle Gruns, in bearings H, H' and, the
spindle A in a bearing B. The end of the arm F is guided at M at the outer
extremity of a projecting arm or bracket.N.
•
When the spindle A is not the motor shaft but is arranged to be driven by a
motor shaft C it may be fitted with a fork O, with the horns of which a rod P,
held by a boss on the end of the motor spindle, engages. The rod P may be n
piece of flexible steel.
With this form of driving attachment the motor spindle C is unaffected by
any want of alignment as between it and the spindle A. The connection may
however be made by other forms of joints such as those shown by Figs. 3 and 4
which are of well known forms. In some cases ordinary disc couplings may be
used and in others the spindle A may be a continuation of the motor spindle.
Figs. 7 and 8 sbow a modification of the arrangement shown in Figs. 1 and 2.
-
Instead of the enclosing wheel J being attached directly upon the end of the
spindle G it is connected thereto through the medium of the wheel or disc R and
the bolts S: In the centre of the outside of the dished wheel J is a button T
resting in a hollow in the end of the spindle G. On the bolts S which connect
the two wheels are spiral springs as shown in Fig. 7. By means of this arrange-
ment the wheel J is firmly held but with an adjustable amount of freedom under
elastic resistance and the pressure between the gyrating wheel E and the wheel J
will be one producing clastic frictional contact further adjustable by the adoption
of the slightly coned contact surfaces of E and J and the adjusting screws L, L'..
At U Fig. 7 is shown a firmly cemented or otherwise attached internal lining
ring of leather or other material suitable for obtaining sufficient frictional adhesion
between it and the wheel J with a moderate amount of pressure between them.
Fig. 9 shows a modified form of the internal wheel E. As shown it is a thin,
stamped, flanged disc which under pressure between part of its periphery and the
enclosing wheel J will be slightly clastic in its action or flexible through a very
small range.
Figs. 5 and 6 show another modification of the gear described. In this drawing
the motor spindle C drives by suitable means the spindle D running in the bushed
boss of the wheel E and carrying two, unbalanced weights Q, Q. The wheel E
as already described with reference to Figs. 1 and 2 prevented from rotating
by an arm F and guide to it suitably placed. The wheel E is loose within
internal and external flanges V, V¹ on and in the wheel J which as in the other
forms described is fixed to the spindle G. When the spindle D Fig. 5 is rapidly
rotated the weights Q fixed upon it cause it to impart to the wheel E the gyratory
movement which in the other forms described is obtained by the excentric pin or
spindle D. In Fig. 5 the periphery of the wheel E and the interior periphery of
the wheel J are grooved for the purpose of obtaining frictional grip but these
surfaces may be of the other kinds already described.
In each of the drawings Figs. 1, 5, and 7 a pinion or cogwheel is shown at K
for imparting motion to some other spindle or shaft but the motion of G may be
transmitted by any other usual means.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that I do not
claim the precise proportion of parts herein shown nor do I claim the use of
epicycloidal gear generally as speed reduction gear but what I do claim as my
invention is:-
(1.) In speed reducing gear the combination of an internal conical wheel gyrating

page_text: apon a high speed rotating excentric spindle within the rim of a correspondingly
conical rotating wheel upon a lower speed spindle said wheels being relatively
'adjustable in the direction of their axes substantially as herein described and
'shown.
(2) In speed reducing gear an elastically mounted rotating wheel substantially
as described with reference to Fig. 7 of the drawings hereto.
(3.) In speed reducing gear the elastic or flexible gyrating wheel substantially
as described.
(4.) In speed reducing gear the method of operating' the gyrating wheel by
means of a rotating spindle carrying, unbalanced woights substantially as described
with reference to Fig. 5.
(5.) In speed reducing gear the means of adjustment of contact pressure between
the surfaces of the gyrating and rotating wheels by the employment of conical
surfaces and axial adjustment substantially as herein described and shown.
(6.) The speed reduction gear substantially as herein described and shown.
Dated this 11th day of August 1896.
W. WORBY BEAUMONT.