Year: 1887

page_text: Date of Application, 9th Nov, 1887
Complete Specification Left, 8th Aug., 1888
Complete Specification Accepted, 28th Sept., 1888
THOMAS HUMPAGE 12 Greenway Bush Lane Ashton Gate Bedminster Bristol
Engineer do hereby declare the nature of this invention to be as follows:-
The object of this invention is to construct a form of gearing wherein the wheel and
pinion (which are in the old type stationed at the back part of the headstock) are cast
together, and both revolve about their axes, by means of a pinion cast to the boss
inside of the coned pulley; at the same time they are moved bodily around the axis
of the shaft or mandril (to which they are kept by a suitable bearing) by means of a
ring of metal provided with teeth (the ring does not revolve) and fixed to the
headstock casting. The power is taken from the small pinion (which revolves and
moves bodily around the shaft or mandril) by a wheel which is keyed to the shaft or
mandril. The gearing is disengaged by sliding the coned pulley back end wise and
there fixed to the shaft or mandril by means of a key across the shaft or mandril: and
secured in or out of motion by means of a bolt or slide fitting in a gruve of the shaft
or mandril. I sometimes use spur gearing from which the same motion is obtained.
All the above wheels are covered symetrically by the coned pulley and the ring of
metal as hereinafter discribed.
The headstock frame is of an ordinary type, like that of an ungeared headstock.
A pinion is cast or otherwise fixed to the boss inside the coned pulley. A wheel,
which is driven by the said pinion, is bell-shaped, in which a small pinion is cast:
both wheel and pinion revolve on a turned bolt or pin, which is fixed on an angle
between right angles and the axis of the shaft or mandril. The bolt being on an
angle brings the teeth of the wheel to gear with the small pinion, which is cast to the
coned pulley. The said wheel is capable of gearing on the opposite side into a larger
diameter. The bolt or pin (on which the wheel and pinion revolve) is fixed to a
casting through which a hole is bored a slack fit for the shaft or mandril: on either
side of the bored hole are luggs cast capable of fitting (slack) into a gruve cut in the
boss of the pinion or coned pulley; the casting is extended beyond the shaft or
mandril, to counterballance the wheel and pinion. The bell-shaped wheel which gears

page_text: into the pinion on the coned pulley, also gears into a ring of metal provided with
teeth (the ring does not revolve) and fixed to the headstock casting, by means of
bolts, or otherwise secured. The small pinion (which is cast to the bell-shaped wheel)
gears into a wheel, which is keyed to the shaft or mandril. The outer boss of the
coned pulley has a slot cut across and through its diameter capable of fitting a key,
which is fixed in and through the shaft or mandril, projecting on each side to
corrispond to the diameter of the outside boss of the coned pulley.
Two gruves are cut in the shaft or mandril, near the rear bearing. A flat bolt or
slide is fitted in the flange of the coned pulley at right angles to the axis of the shaft
or mandril; the end of the bolt or slide fits (free to revolve) in either of the gruves,
which keeps the gearing in or out of motion: a spring is used to keep the bolt or
slide in position.
The coned pulley and pinion being moved about the axis of the shaft or mandril,
causes the bell-shaped wheel (and pinion) into which it gears, to revolve about their
axes, at the same time being in gear with the ring of metal, which causes the said
wheel and pinion, and casting to which they are fixed, to move bodily (in the same
direction as the coned pulley) around the axis of the shaft or mandril. The wheel
which is keyed to the shaft or mandril, being in gear with the small pinion which is cast
in the bell-shaped wheel, is moved slowly in the same direction as the coned pulley.
To disconnect the gearing, draw the bolt or slide outwards with the finger and thumb,
then slide the coned pulley back end wise, which draws (by means of the two luggs)
the counterballance, the wheel and pinion (which are cast together) out of gear from
the ring of metal, and the wheel which is keyed to the shaft or mandril: at the same
time the outer boss of the coned pulley is geared with the key, which is fixed through
the shaft or mandril. The bolt or slide will then move by means of the spring, into
the outer gruve in the shaft or mandril, which will retain the coned pulley and the
wheels in the later possition.
I sometimes dispense with the pinion on the inside boss of the coned pulley, also
with the casting which carries the bell-shaped wheel and pinion. In this case the
turned bolt or pin on which the bell-shaped wheel and pinion revolve, is fixed to the
inside of the coned pulley, and the counterballance is cast on the opposite side. The
other necessary parts are as in the aforsaid.
In some cases I use spur gearing. A wheel and pinion are cast together; the wheel
gears into a ring of metal which is provided with internal teeth: the ring is fixed to
the headstock casting. The said pinion which is cast to the wheel, gears into a wheel
with internal teeth, which is fixed to the shaft or mandril. The wheel and pinion
which are cast together, are carried by a turned pin which fits into an eccentric sleeve
(carried by the coned pulley) for the purpose of pulling the wheels in, or out, of gear.
All the other necessary parts are as in the first discription.
Dated this 9th day of November 1887.

page_text: The headstock-frame (A) is of an ordinary type, like that of an ungeared headstock.
A pinion (B) is cast or otherwise fixed to the boss inside the coned pulley (C).
A wheel (D), which is driven by the said pinion (B), is bell-shaped, in which a small
pinion (E) is cast; both wheel and pinion revolve on a turned bolt or pin (F) which is
fixed on an angle between right-angles and the axis of the shaft or mandril (G).
The bolt being on an angle brings the teeth of the wheel (D) to gear with the small
pinion (B) which is cast to the coned pulley. The said wheel (D) is capable of
gearing, on the opposite side, into a larger diameter. The bolt (F) or pin (on which
the wheel and pinion revolve) is fixed to a casting (H) through which a hole is bored,
a slack fit for the shaft or mandril: on either side of the bored hole are luggs (1)
cast capable of fitting (slack) into a groove (J) cut in the boss of the pinion (B) or
coned pulley; the casting (H) is extended beyond the shaft or mandril, to counter-
balance the wheel (D) and pinion (E).
The bell-shaped wheel (D), which gears into the pinion (B) on the coned pulley,
also gears into a ring of metal (K), provided with teeth (the ring does not revolve),
and fixed to the head-stock casting (A) by means of bolts (L, L) or otherwise secured.
The small pinion (E), which is cast to the bell-shaped wheel (D), gears into a wheel (M)
which is keyed to the shaft or mandril (G). The outer boss (N) of the coned pulley
has a slot (0) cut across and through its diameter capable of fitting a key (P) which
is fixed in and through the shaft or mandril, projecting on each side to correspond to
the diameter of the outside boss of the coned pulley. Two grooves (Q, Q) are cut
in the shaft or mandril, near the rear bearing. A flat bolt or slide (R) is fitted in
the flange of the coned pulley at right angles to the axis of the shaft or mandril,
the end of the bolt or slide (R) fits (free to revolve) in either of the grooves (Q, Q),
which keeps the gearing in or out of motion; a spring (S) is used to keep the bolt or
slide in position.
The coned pulley (C) and pinion being moved about the axis of the shaft or
mandril, causes the bell-shaped wheel (D) and pinion (E), into which it gears, to
revolve about their axes, at the same time being in gear with the ring of metal (K),
which causes the said wheel (D) and pinion (E) and casting (H), to which they are
fixed, to move bodily (in the same direction as the coned pulley) around the axis
of the shaft or mandril (G). The wheel (M), which is keyed to the shaft or mandril,
being in gear with the small pinion (E) which is cast to the bell-shaped wheel (D),
is moved slowly in the same direction as the coned pulley (C). To disconnect the
gearing, draw the bolt or slide (R) outwards with the finger and thumb, then slide the
coned pulley (C) back, endwise, which draws, by means of the two luggs (I),

page_text: bolt (R) or slide will then move by means of the spring (S) into the outer groove (Q)
in the shaft or mandril (G) which will retain the coned pulley (U) and the
wheels (D. & E) in the latter position.
I sometimes dispense with the pinion (B) on the inside boss of the coned pulley (U),
also with the casting (H) which carries the bell-shaped wheel (D) and pinion (E).
In this case the turned bolt or pin (F) on which the bell shaped wheel and pinion
revolve, is fixed to the inside of the coned pulley (C) and the counterbalance (H)
is cast on the opposite side. The other necessary parts are as in the aforesaid.
FIG. 2 (SHEET 2).
In some cases I use spur gearing. A pinion (B) cast or otherwise fixed to the
coned pulley (C) drives a wheel (D) which has a small pinion (E) cast to it.
The wheel (D) and pinion (E) both revolve on a turned pin (F) which is fixed
to a casting (H) carried by an eccentric sleeve (R) for the purpose of putting the
wheels in or out of gear. A ring of metal (K) is provided with internal teeth into
which gears the wheel (D). Another wheel (M) is keyed to the shaft (G) and is
also provided with internal teeth which gear into a pinion (E).
When the gearing is not required the eccentric (R) is moved around the axis of
the shaft (G) and by so doing throws (D) out of gear with (K) the teeth of the later
are made shorter to allow of this being done; the coned pulley is then fixed to the
shaft (G) by means of a set screw (T) the coned pulley (C) being moved about its
axis, the motion imparted to the shaft (G) is the same as explained in Fig. 1
(Sheet 1). In some cases I dispense with the eccentric sleeve (R) and bore the
casting (H) to fit the boss of the coned pulley (or the pinion B) and move the
ring of metal (K) from the coned pulley (C) as shown in Fig. 3. (Sheet 3).
Fig. 3. (Sheet 3) shows an arrangement for putting the wheels in or out of gear by
means of the ring of metal (K) which is capable of being moved into gear with
the wheel (D) which when in gear is fixed firmly to the main casting (A) by means
of set screws (R, R) their points fitting into countersunk holes (U U) in the
(V
guides (D)). When the gearing is not required the ring (K) is moved out from the
The coned pulley (C) is then made fast to the shaft (G) by means of a set screw (T) ; ||
all the other necessary parts are as shown & explained in Figs. 1 & 2.
Figs. 4 & 5 (Sheets 4 & 5) are respectively side and end elevations of spur gearing
for heavy work; the upper portion of Fig. 4 (Sheet 4) being in section through (K. M)
in Fig. 5. A bevil wheel (W) to the boss of which may be attached a wheel,
pulley or handle; two intermediate wheels (X. X) which are partly hidden, are attached
to the boss of the outer wheel (M) transmit the power to a wheel (Y) which is cast
to the pinion (B): a hole is cast through (Y & B) a slack fit for the shaft (G).
The pinion (B) inserted between the wheels (M, M) gears into (D) (the wheel D
also gears into K, the wheels E, E gear into M. M.) and rolls between the turned
pitch lines of the wheels (D. E. E. Z. Z.) the latter wheels also gear into and roll
on the turned pitch lines of the ring of metal (K) which is bolted to the main
casting (A) thus reducing the friction to a minimum. The motion imparted to the
shaft (G) is the reverse way to that shown explained in Fig. 1 (Sheet 1).
In some cases I dispense with one of the intermediate wheels marked (XX)
also with the roller or bearing wheels (Z. Z.) & bore through the wheel & pinion (Y & B)
to fit the shaft (G), free to revolve.
To cause the shaft (G) to move in the opposite direction to that shown in
Fig. 4.
I connect (B) into (E. E.) and reduce the diameter of (D) also the
ring (K) to suit.
Similar parts in each figure are marked with the same letters.

page_text: 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 what I
claim is :-
(1) The general arrangements and combination of toothed gearing for general
use as set forth in this specification & shown in Figs. 1 to 5.
(2) A fixed ring of metal provided with teeth which does not revolve.
(3) An intermediate wheel which gears into the aforesaid non-revolving ring of
metal & also into a pinion which has one motion, that of revolving around the axis
of the main shaft. The pinion revolves on a suitable bearing or bearings as set
forth, thus reducing friction to a minimum.
1000