Improved Mechanism for Converting Rotary Motion into Recipro- cating Motion, and Reciprocating Motion into Rotary Motion.
Year: 1893

page_text: Date of Application, 19th Dec., 1893
Complete Specification Left, 19th Sept., 1894-Accepted, 20th Oct., 1894
PROVISIONAL SPECIFICATION.
Improved Mechanism for Converting Rotary Motion into Recipro-
cating Motion, and Reciprocating Motion into Rotary Motion.
I. GEORGE HUMPHRIES, of 28 Richmond Road, Barnsbury in the County of
Middlesex, Wood Carver, do hereby declare the nature of this invention to be as
follows:-
My invention has for its object improved mechanism wherewith rotary motion
may be converted into reciprocating motion and vice versa.
For the purposes of my invention I secure a toothed sector on one end of a shaft
from, or to, which the rotary motion is to be imparted and at opposite sides of said
shaft I pivot to the bearing thereof or other stationary part two other toothed
sectors. The teeth of these three sectors are of such size, shape, and number that
the teeth of the sector on the shaft during one half of its revolution gear with the
teeth of one of the pivoted sectors but at the completion of that half revolution
disengage therefrom, and engage during the second half of its revolution with the
teeth of the second of the two pivoted sectors.
It will thus be understood that if the shaft be revolved, the sector thereon
during one half of each revolution will cause one of the two pivoted sectors to
travel in one direction whilst during the second half of each of its revolutions will
cause the second of the pivoted sectors to travel in an exactly opposite direction, so
that by combining the movements of the pivoted sectors a continuous reciprocating
motion will be imparted to the free end of a rod or lever projecting from the boss
of one or both of said pivoted sectors.
This I effect by providing each of the two pivoted sectors with a second row of
teeth which project beyond those gearing with the teeth of the sector on the shaft
sufficiently to enable them to extend across the end of the shaft and gear
together.
Thus whichever of the pivoted sectors is in gear with the sector on the shaft the
motion of that pivoted sector will be transmitted to the other pivoted sector and a
continuous reciprocating motion given to both, so causing the lever projecting from
one of said pivoted sectors to be reciprocated when the shaft is revolved and the
shaft to revolve when the lever is reciprocated.
Dated this 10th day of December 1902
CASTLE SMITH,
"Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improved Mechanism for Converting Rotary Motion into Recipro-
cating Motion, and Reciprocating Motion into Rotary Motion.
I, GEORGE HUMPHRIES, of 28 Richmond Road, Barnsbury, in the County of
Middlesex, Wood Carver, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
O ascertained in and by the following statement :-
My invention has for its object improved mechanism wherewith rotary motion
may be converted into reciprocating motion and vice versa.

page_text: For the purposes of my invention I secure a toothed sector on one end of a shaft
from, or to, which the rotary motion is to be transmitted and at opposite sides of
said shaft I pivot to the bearing thereof, or other stationary part, two other toothed
sectors. The teeth of these three sectors are of such size, shape, and number that
the teeth of the sector on the shaft during one half of its revolution gear with the
teeth of one of the pivoted sectors but at the completion of that half revolution
disengage therefrom, and engage during the second half of its revolution with the
teeth of the second of the two pivoted sectors.
It will thus be understood that if the shaft be revolved, the sector thereon during
one half of each revolution will cause one of the two pivoted sectors to travel in
one direction, whilst during the second half of each of its revolutions will cause the
second of the pivoted sectors to travel in an exactly opposite direction, so that by
combining the movements of the pivoted sectors a continuous reciprocating motion
will be imparted to the free end of a rod or lever projecting from the boss of one
or both of said pivoted sectors.
This I effect by providing each of the two pivoted sectors with a second row
of teeth which project beyond those gearing with the teeth of the sector on the
shaft sufficiently to enable them to extend across the end of the shaft and gear
together.
Thus whichever of the pivoted sectors is in gear with the sector on the shaft the
motion of that pivoted sector will be transmitted to the other pivoted sector and a
continuous reciprocating motion to both, so causing the lever projecting from one
of said pivoted sectors to be reciprocated when the shaft is revolved, and the shaft
to revolve when the lever is reciprocated.
And in order that my invention may be more fully understood and carried into
practice I will now proceed to describe the same with reference to the accom-
panying drawings, of which Fig. 1 is a front elevation; Fig. 2 a back elevation ;
and Fig. 3 a sectional plan on line -y Fig. 1 of mechanism coustructed according
to my invention.
On the end of the shaft a is secured a sector b (the outermost teeth of which are
preferably inore rounded than the remainder) arranged to alternately gear with
the teeth e' of two sectors e pivoted to any stationary part or parts on each side
of the shaft a. These sectors are each provided with a second row of teeth c
projecting beyond those c' gearing with the sector b on the shaft a to such an extent
as to gear said sectors together and cause them both to move whichever sector is
operated so that when the shaft a is revolved a continuous reciprocal motion is
imparted to both sectors c, whilst when one of said sectors c is reciprocated a
continuous rotary motion is imparted to the shaft a.
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 :-
Mechanism for converting rotary motion into reciprocating motion and recipro-
cating motion into rotary motion consisting essentially of a sector a secured to the
shaft or spindle to or from which motion is to be transmitted, and pivoted sectors c
gearing with said sector a and with one another substantially as and for the purpose
described and illustrated in the accompanying drawings.
2004
66
CASTLE SMITH,
Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.