IMPROVEMENTS IN APPARATUS APPLICABLE TO BOLTS AND REELS FOR DRESSING MEAL AND FLOUR
Year: 1879

page_text: LETTERS PATENT to Henry Beaufort Sears, of Liverpool, in the County of
Lancaster, Gentleman, for the Invention of "IMPROVEMENTS IN APPARATUS
APPLICABLE TO BOLTS AND REELS FOR DRESSING MEAL AND FLOUR."
Sealed the 30th September 1879, and dated the 1st July 1879.
COMPLETE SPECIFICATION filed by the said Henry Beaufort Sears at the
Office of the Commissioners of Patents on the 1st July 1879.
HENRY BEAUFORT SEARS, of Liverpool, in the County of Lancaster. “IM-
PROVEMENTS IN APPARATUS APPLICABLE TO BOLTS AND REELS FOR DRESSING
MEAL AND FLOUR."
My Invention relates to improvements in and in connection with the apparatus
for which I obtained Her Majesty's Letters Patent, No. 2319 and 5101, both of the
year 1878, and has for its object to augment the efficiency of the appliances as a
whole, and to increase the durability of parts of such appliances.
First. In order that the apparatus shall work with minimum vibration I so
arrange springs that they shall act only at the proper times, namely, when the
toe wheels aro passing over and havo just passed over the angles of the bolts or
reels.
Figs. 1, 2, 3, 4, 5, and 0 illustrated various arrangements of apparatus for carrying
this part of my improvements into effect. In all these views like letters denote the
same parts.
Fig. 1. a, reel; b, brush carrying shaft supported in brackets or bearings; c, lever
rigidly attached, secured, or formed with the shaft b; d, spiral spring attached to
the lever c by the flexible connecting pieces c made of leather or other suitable
material. During the rotation of the bolt or reel the spring & will be unacted upon
until the connecting pieces e are drawn tight by the motion of the lever as the toe
wheel fon the toe arm 7 passes over the angles of the said bolt or reel.
Fig. 2. In this view the spring acts by compression, and the lever c is free to
move away from the spring when the toe wheel is passing over the flat surfaces of
the bolt or reel.
Fig. 3. Here an india-rubber tension spring is substituted for the spiral spring,

page_text: f
Fig. 4. A flat or curved metal spring is made to serve the desired purpose,
the requisito free motion of the lever being obtained by the adjustment of the
nuts &
Fig. 5. Here a zig-zag spring is arranged to act in the manner described in
Fig. 2.
Fig. 6 illustrates how an india-rubber spring may be made to produce the desired
result by compression. A piece of india-rubber h is attached to the end of the
lever c, and a second piece h¹ to the fixed bracket or projection i. Only one piece
of rubber attached to the lever or bracket may be used.
It will be obvious that in carrying out my Invention springs may be arranged
and combined in many ways with levers, or if desired with the toe arms themselves
in such manner as to allow a certain freedom of motion to such levers or toc arms,
or the levers may be allowed a certain play on the shaft.
Second. In order to prevent the toc-wheel from being pressed against the bolt or
reel, except at the angles, I arrange a cam to be so operated by the motion of the
toe wheel arm that the spring is only allowed to act at the desired times.
Fig. 7 illustrates the above part of my Invention. j, cam operated by the con-
necting rods / from the toe wheel arm g; 1, pin or lever resting against the cam. It
will be seen that as the cam is caused to revolve by the to and fro motion of the
toe arm that it will so act on the pin l as to prevent the action of the spring taking
'effect except over the angles of the reel on the toe arm.
Third. In order that the apparatus shall be thrown out of action and lifted freo
from the bolt or reel in case the spring or springs should break, or if the toe wheel
should for any reason rise too far from the surface of the bolt or reel, I fit the toe
arm, lever, or other convenient moving part of the apparatus with a catch.
Fig. 8 illustrates the above third part of my Invention. Here the bolt, pawl, or
latch m free to move on the pin n enters the notch or recess o in the lever c,
should the brush or too arm rise too high from off the surface of the bolt or recl.
Many arrangements of automatic gear under this part of my Invention may be
devised.
Fourth. In order to ensure that the apparatus shall be thrown out of action and
lifted free from the bolt or reel in case the toe wheel should break or become
deranged, the toe arm work loose on the shaft, or any accident occur which would
allow the bruslies to fall against the surface of the reel, I employ appliances actunted
by a spring or springs, or weight or weights, and held in position by a trigger catch
or dotent to raise the said apparatus free from the bolt or reel when the said
trigger catch or detent is actuated by the excessive motion of the toe arm or
lever.
Fig. 8 illustrates one modification of mechanism whereby this fourth part of my
improvements may be carried into effect. p, box containing a spiral spring q which
acts against the piston r on the rod 8. The spring is compressed and held in position
by the cover t and trigger u. If the toe wheel should become worn or otherwise
acted upon as to allow the apparatus to approach the bolt or reel too closely the
lever c will act on the trigger and allow the rod a to be projected suddenly by
the resilience of the spring 7 so as to throw up the apparatus until it is caught and
held in position by the bolt, pawl, or catch m
Fifth. In order to provide further means for satisfying the requirements set forth
under the above fourth head, I attach the springs which serve to keep the apparatus
from rising in such manner to their retaining agents that they may be liberated
when necessary. The action of the bolt or recl on the too wheel will then cause
the apparatus to rise until it is caught and held in position by the apparatus set
forth under the second head.
Fig. 9 illustrates one arrangement of apparatus suitable for this part of my
Invention. The spring d is attached to the lever c by means of the spring bolt w
held in position by the catch u. Should the apparatus descend too low the trigger
on the lever c will strike against the set scrow so as to liberate the bolt w.
spring & will then become detached from the lover and will thereby cease to act on
The

page_text: the apparatus, which said apparatus will be thrown up by the action of the bolt or
reel on the toe wheel sufficiently high for the catch m, Fig. 8, to come into
operation.
Sixth. In order to render the action of the apparatus more reliable and easy I
form or construct the brush carrying shaft with knife edge bearings. Fig. 10
illustrates this part of my Invention; a, shaft constructed with knife edge
bearings ¹.
Seventh. In order to ensure the durability of the toe wheel I fit or provide such
wheel with a loose wearing surface free to revolve around the said wheel. I retain
such loose wearing surface in its place by a guide pulley or other suitable appliance.
Fig. 11 shows one of many ways of carrying this part of my Invention into effect;
f, toe wheel; g, toe arm; c, lever formed in one piece; y, loose ring or wearing
surface of leather or other suitable material retained in position by the guide s.
prefer that the toe wheel should have affixed to its running edge a coating or
covering of india rubber, leather, or like agent against which the loose ring or
wearing surface may work.
Having now described and illustrated the said Invention in such manner that
others will be enabled to carry my improvements into effect, I claim,-
First head. Arranging springs to act on levers or toe arms, substantially in the
manner and for the purposes set forth.
Second head. The apparatus substantially as and for the purposes sot forth.
Third head. Appliances for retaining the apparatus out of action for the purpose
Bet forth.
Fourth head. Appliances for throwing the apparatus out of action for the purposes
set forth.
Fifth head. The appliances, substantially as set forth.
Sixth head. Constructing the brush carrying shaft substantially as set forth.
Seventh head (a.) Fitting toe wheels with a loose ring or wearing surface for the
purposes set forth.
(6.) A toe wheel and loose ring or wearing surface in combination with a guido,
substantially as set forth.
In witness whereof, I, the said Henry Beaufort Sears, have hereunto set my
hand and seal, this Thirtieth day of June, in the year of our Lord One
thousand eight hundred and seventy nine.
HENRY BEAUFORT SEARS. (LA)
HENRY BEAUFORT SEARS. (LA)