Improvements in Egg-beaters.
Year: 1896

page_text: Date of Application, 17th Dec., 1896-Accepted, 30th Jan., 1897
COMPLETE SPECIFICATION.
Improvements in Egg-beaters.
I, HERBERT WASHINGTON MASON, residing at Glens Falls, in the County of
Warren, State of New York U.S.A. Gentleman 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 applies to that class of egg-beaters in which a whipper is rapidly
revolved by means of a pinion thereon engaged by a vertical-gear-wheel-turned.
by the operator. It avoids the liability of the gear-wheels to escape from
engagement and slip, by providing simple and efficient means of keeping them
reliably engaged, and it attains this by means of a light wire hook so constructed
and attached as to present a broad bearing on the front of the large gear-wheel.
I construct that wheel with a plane rim outside of the gear on the inner or back
face, and arrange a roller to run on such plane surface to aid in keeping the wheel
in its correct position.
The accompanying drawings form a part of this specification, and represent what
I consider the best means of carrying out the invention.
Figure 1 is an elevation, presenting what I call the "back face";
Figure 2 is a corresponding edge view; and
Figure 3 is a front view of a portion showing a modification.
Similar letters of reference indicate like parts in all the figures where they
appear.
A indicates a framing, which may be of malleable cast-iron or other suitable
material, and A' is the ordinary stud thereon.
B is a slender extension downward conveniently formed of sufficiently stout wire,
firmly fixed to frame A, and suitably bent to form a supporting-center for the
lower end of each of the two beaters, and C and D are such beaters, each having
at its upper end a pinion C¹ D'. These pinions C' and D' are adapted to mesh
as spur-gears and also to receive motion from a larger wheel M, which is carried
to rotate on the stud A¹. The wheel revolves in a plane at right angles to the
motion of the whippers or beaters C D, and may be rotated by a hand-crank M³,
secured thereto. All these parts may be of the ordinary and long-approved
construction, except that the wheel M is equipped with a smooth rim Mat its
periphery, extending beyond its gearing and beyond the crank M².
EE E is a light and broad hook, shown made of wire and having two side
arms E E¹, connected by a cross-bar E³, the ends E' E' entering transverse holes
bored in the lower portion of the frame A and retained by clenching, while its
broad bight extends forward under the bottom of the wheel M and a little upward
and across in front of the wheel or its rim M*.
This construction forms a spring-hook that holds the bottom of the wheel at
its rim in two planes, so as to normally maintain proper contact of the intermeshing
teeth, while there is enough elasticity in the wire to allow of a yielding and
consequent lateral movement to prevent the parts from seriously binding, even
when the beater is new and stiff, and it retains its position and compels the wheels
to remain well engaged with the nearest pinion C¹, and consequently driving both
pinions CD and the attached whippers C D, even after the machine has been
used so long that all bearings are loose, the tendency of the hook E being to draw
the teeth of the wheel M toward the pinion C.

page_text: F is an antifriction-wheel mounted on a pivot-wire set in a short stud-in the
front of the frame A, diametrically above the hook, and arranged to roll against
the back face of the smooth rim M and hold it in the desired position at the
top. This, by holding the top of the wheel M forward, contributes still further
to insure that that wheel is kept properly. engaged with the pinion C¹ at the
bottom, however loose its bearing on the central stud A' may become through wear
or other cause.
The invention adds but slightly to the weight or cost of the beater, and is
peculiarly adapted to mechanism of this class by allowing a large amount of
looseness of parts without involving difficulty.
Modifications may be made if desired. The device can work without the
roller F, causing the hook to serve alone relatively to the other parts. It will be
observed that the width between the two points where the double hook bears on the
wheel M is sufficient to guard the wheel against ever being skewed in its position.
I can work with some success with the roller F alone without the hook. I prefer
the whole together, as shown.
There may be rollers G carried by the hook to reduce the friction between the
hook E E E and the front face of the wheel M. Fig. 3 shows such an arrangement
with the form of the hook slightly modified and slight collars g to aid in holding
the rollers in position.
I attach importance to the fact that the hook E E E' is made of wire bent as
shown, because this construction of hook adds but little to the weight or cost of
the structure and provides elasticity, which is important in accommodating
imperfections in the workmanship while the device is new.
I attach importance to the fact that the hook is double and affords, a wide
bearing by this cross-bar E2, because such form not only holds the wheels in gear
but contributes to keep the wheel M in the true plane, preventing lateral
oscillation.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what I
claim is :-
In an egg-beater the combination of a frame, whippers carried thereby,
horizontally-positioned intermeshing pinions for turning the whippers and a wheel
to rotate said pinions, which is pivotally mounted on said frame in a vertical
position, and that is provided on its inner central face with gear-tecth, and a
plane-surface extended rim, a roller supported by said frame to bear on the inner
face of said rim at its upper turned portion, and a spring-hook also supported by
said frame that is adapted to bear against and guide said rim in two planes at
its bottom portion to hold the gear normally in proper contact and that will allow
of yielding to overcome an extra strain imposed upon the gearing, substantially as
described.
Dated this 17th day of December 1896.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C.