generally for Spindles with Varying Distance.
Year: 1885

page_text: generally for Spindles with Varying Distance.
I, PETER JENSEN Fel. Inst. P.A. of 33 Chancery Lane in the County of
Middlesex do hereby declare the nature of said invention for "ADJUSTABLE
WHEELGEARING FOR THE ROLLERS OF ROLLER MILLS AND GENERALLY FOR SPINDLES
WITH VARYING DISTANCE (a communication to me from abroad by Friedrich
Wegmann of Zürich Switzerland Engineer and Machine Manufacturer) to be as
follows:-
The tooth wheel gear in roller mills has the defect that as the rollers wear by
abrasion or by being trued up in the lathe the distance between their centres is
varied and thus the teeth of the wheels do not gear properly with each other and
by increased wear have to be replaced by new ones. There are also many other
cases where it is desirable to adjust the gearing in such manner as to ensure proper
gearing on the pitch lines of the tooth wheels at all times.
This invention consists in an arrangement of wheel gearing which with ease can
be adjusted according to the varied diameter of the rollers or varied distance
between centres generally, so that the wheels may always gear exactly on their
pitch lines. Instead of gearing the two rollers by means of two tooth wheels fixed
on their spindles and gearing directly with each other I employ two wheels
between which a third wheel having inner and outer tooth rim is interposed, such
wheel being mounted eccentrically to the roller spindle carrying the inner driving
wheel and adapted to keep in unchangeable gear therewith but so that the outer
tooth rim according to the distance from the driven tooth wheel on the other roller
spindle can be adjusted as required.
As applied for instance to a roller mill the double wheel is mounted loosely on
an eccentric hub in which the roller spindle turns. The said hub can be adjusted
and fixed in position by means of a bolt fixed to the framing passing through a
slot in a sector shaped part formed on the hub which can be shifted round its
spindle by taking hold of a handle. Around this eccentric hub the double wheel
turns, and in it turns the spindle with a sinaller tooth wheel fixed thereon. This

page_text: latter wheel will in any position of the eccentric gear constantly with the inner
tooth rim of the wheel while the outer tooth rim of the wheel through the variable
eccentric position of the eccentric according to the distance between the roller
spindles is adjustable for gearing with the wheel fixed on the other roller spindle
or, as required in some cases, may be thrown entirely out of gear.
In a modification the eccentric is mounted on the prolonged outer end of roller
spindle and is held by two screws in combination with helical springs which are
applied in the cover over the wheels.
In another modification the double wheel is not mounted by means of an
eccentric hub placed on the roller spindle but by a gudgeon which independently of
the spindle is guided in the bell shaped cap of the wheel cover and is held fast
by a nut.
In another modification the double wheel is mounted on a gudgeon which is
fixed on the framing of the machine outside the periphery of the wheel fixed on
the roller spindle but adjustable in a slot in the double wheel.
BREWER & JENSEN,
For the Applicant.

page_text: generally for Spindles with Varying Distance..
I, PETER JENSEN Fel. Inst. P.A of 33 Chancery Lane in the County of
Middlesex do hereby declare the nature of this invention (a Communication to
me from abroad by Friedrich Wegmann of Zürich Switzerland Engineer and
Machine manufacturer) and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:—
The tooth wheel gear in roller mills has the defect that as the rollers wear by
abrasion or by being trued up in the lathe the distance between their centres is
varied and thus the teeth of the wheels do not gear properly with each other and
by increased wear have to be replaced by new ones. There are also many other
cases where it is desirable to adjust the gearing in such manner as to ensure proper
gearing on the pitch lines of the tooth wheels at all times.
This invention consists in an arrangement of wheel gearing which with ease can
be adjusted according to the varied diameter of the rollers or varied distance
between centres generally, so that the wheels may always gear exactly on their
pitch lines. Instead of gearing the two rollers by means of two tooth wheels fixed
on their spindles and gearing directly with each other I employ two wheels
between which a third wheel baving inner and outer tooth rim is interposed, such
wheel be mounted eccentrically to the roller spindle carrying the inner driving
wheel and adapted to keep in unchangeable gear therewith but so that the outer
tooth rim according to the distance from the driven tooth wheel on the other roller
spindle can be adjusted as required.
In the accompanying drawings I bave illustrated the invention with special
reference to roller mills, but it is obviously applicable to any other purpose where
it is needful or useful to adjust the gearing according to varying distances between
spindle centres.
Figure 1 is a sectional side view of a roller mill constructed with this gearing,
Figure 2 a plan section, Figure 3 a part sectional end view and Figure 3a a detail
side view, Figure 4 is a side view and Figure 5 a plan section of a modified form
of gearing, Figure 6 is a side view and Figure 7 a plan section of another modi-
fication and Figures 8 and 9 respectively side view and plan section on line X Y Z
Figure 8 of yet another modification.
Referring to Figures 1, 2, 3 and 3a the double wheel R is mounted loosely on an
eccentric hub E in which the roller spindle A¹ turns. The said hub E can be
adjusted and fixed in position by means of the bolt B fixed to the framing as
shown at Figure 2 and passing through a slot in the sector shaped part L formed
on the hub E and shown separately in Figure 3a which can be shifted round its
spindle A by taking hold of the handle G. Around this eccentric hub E the
double wheel R. turns, and in it turns the spindle A¹ with the tooth wheel R¹ fixed
thereon. This latter wheel will in any position of the eccentric E gear constantly
with the inner tooth rim of the wheel R, while the outer tooth rim of the wheel R
through the variable eccentric position of the eccentric E according to the distance
between the roller spindles A1 and A2 is adjustable for gearing with the wheel R²

page_text: fixed on the other roller spindle, or, as required in some cases may be thrown
entirely out of gear.
In the modification Figures 4 and 5 the eccentric E is mounted on the prolonged
outer end of roller spindle A¹ and is held by two screws in combination with
helical springs which are applied in the cover over the wheels.
In another modification Figures 6 and 7 the double wheel is not mounted by
means of an eccentric hub placed on the roller spindle A¹ but by a gudgeon Z
which independently of the spindle A¹ is guided in the bellshaped cap H of the
wheel cover and is held fast by the nut M.
Figures 8 and 9 shew another modification in which the double wheel R is
mounted on a gudgeon P which is fixed in a radial slot in the framing of the
machine outside the periphery of the wheel R' which latter is fixed on the roller
spindle A. The gudgeon P is adjustable in the slot, which, is shewn in dotted
lines.
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 as the Invention communicated to me is
First. A tooth wheel gearing for connecting two spindles which are to turn in
opposite directions consisting of a tooth wheel R¹ fixed on its spindle A' and a
tooth wheel R² fixed on its spindle A2 and an intermediate tooth wheel R having
an inner tooth rim gearing with the tooth wheel R¹ and an outer tooth rim
gearing with the tooth wheel R² such intermediate wheel R being mounted loosely
and its centre.being adjustable eccentrically relatively to the spindle A¹ for the
purpose of keeping its outer tooth rim in proper pitch line gear with the wheel R2
substantially as set forth..
Second. The special application of the described tooth wheel gear to the
driving of the rollers in roller mills for producing the differential speed of same
substantially as set forth.
Dated thin at
700-