Improved Means and Apparatus for Regulating or for Determining the Speed of Rotation of Shafts or Spindles.
Year: 1893

page_text: Date of Application, 30th Dec., 1893
Complete Specification Left, 22nd Feb., 1894-Accepted, 22nd Sept., 1894
PROVISIONAL SPECIFICATION.
Improved Means and Apparatus for Regulating or for Determining
the Speed of Rotation of Shafts or Spindles.
HENRY GARDNER, of 166 Fleet Street, in the City of London, Patent Agent,
do hereby declare the nature of this invention, which has been communicated to me
from abroad by Robert Jesse Henderson, of 89 East 8th Street, Oswego, State of
New York, United States of America, Engineer, to be as follows:-
This invention relates to improved means and apparatus for regulating, or for
determining the speed of rotation of shafts or spindles.
According to this invention, a shaft, or spindle, or a sleeve thereon carries a
boss, from which a stop piece projects to come in contact with a lug projecting from
the inner face of a drum. Another part of the boss has a tooth and two indents
for the reception of the jaw of a pivoted lug, the other end of which encircles, or
grips one end of a steel band forming a kind of power band, said band being covered
with leather to act against the wall of a drum as a brake.
The cylinder has a partition, and on the opposite side which forms a chamber, a
series of segmental blocks are arranged, the outer periphery of which forming
nearly a circle impinge against a spring band, so that by centrifugal action they
fly outwardly, and put the band into contact with the wall of the cylinder, and
check the speed automatically. In a space between the ends of the segments is a
pin projecting from the drum in which the parts before mentioned are enclosed, said
drum being in a piece, or having connected to it a pinion, or strap wheel, from and
by which appliances can be driven at a speed determined by the flying out motion
given to the segments which act as a brake or regulator thereto.
Instead of the stop piece being arranged, as before described, it may have a
pivoted paul to take into teeth of an internal ratchet which the shaft, or its sleeve
in its rotation pulls round.
The stop, according to this last arrangement, may be in a piece with the pinion,
or the strap wheel according to the purpose for which the invention is applied, and
may have an outside brake on the drum.
Dated this 30th dor of Deconshaw 1902
COMPLETE SPECIFICATION.
Improved Means and Apparatus for Regulating or for Determining
the Speed of Rotation of Shafts or Spindles.
1, HENRY GARDNER, of 166 Fleet Street, in the City of London, Patent Agent,
do hereby declare the nature of this invention, which has been communicated to me
from abroad by Robert Jesse Henderson, of 89 East 8th Street, Oswego, State of
New York, United States of America, Engineer, and in what manner the same is
to be performed to be particularly described and ascertained in and by the following
statement:-
This invention relates to improved means and apparatus for regulating, or for
determining the speed of rotation of shafts or spindles.
According to this invention a shaft or spindle, or a sleeve thereon carries a boss
from which a stop piece projects to come in contact with a lug formed on the
internal periphery of a drum and by which said drum or pulley is prevented from
Price 8d.1

page_text: rotation. Another part of the said boss has a tooth and two indents for the
reception of the jaw of a pivoted lever, to the other end of which is firmly secured
one end of a steel band forming a kind of power band, said band being covered
with leather to act against the internal periphery of an externally arranged drum
fixed to the shaft, or spindle, the speed of which it is desired to regulate.
The drum or pulley first mentioned has a partition which forms a chamber for
holding a series of segmental blocks, the outer periphery of said blocks form nearly
a circle and are connected together by a spring band, so that by centrifugal action
they may fly outwardly and put the band into contact with the internal periphery
of the chamber and cause saine to rotate with it to put the first mentioned brake
into contact with the outer drum to automatically check the speed of the drum
sbaft or spindle to which said drum is attached.
In a space between the ends of the segments is a pin projecting from the drum
covering the chamber in which the parts before mentioned are enclosed, said drum
being in a piece connected to the shaft or spindle it is desired to regulate, the speed
being determined by the flying out motion given to the segments which act as a
friction clutch to move the internal drum and put on the brake.
Instead of the before going arrangement, a pivoted paul may be caused by
centrifugal action to take into teeth of an internal ratchet which is encircled by a
balanced brake band.
The invention will be understood by the annexed drawings.
Figure 1 is an open, side elevation looking from one face of a drum.
Figure 2 is a section on line 1-2 of Figure 3.
Figure 3 is a reduced sectional plan.
Figure 4 represents the modification which may or may not be employed in the
foregoing drum in lieu of the arrangement shown at Figure 1.
A is the spindle or shaft Fig. 3, this is supported in bearings A¹ in the usual
manner for rotation by any ordinary means.
This shaft has a reduced part on which the internal pulley G is free to revolve,
said drum or pulley G having a partition D to form a pocket for the reception of
a centrifugal brake band P, as hereinafter described.
The boss C on the other side of the said partition D has an arm E formed in a piece
with it and projects within reach of a lug stop F formed on the internal periphery of
the internal pulley Gand by which the said internal pulley is prevented from turning
too far when revolved by the centrifugal brake band as hereinafter described it being
understood that the boss C is fixed upon the immovable shaft A". The boss C has
a tooth H and two indents next thereto for engagement with a jaw 1 of a lever
pivoted at J, the-outer end of said lever having a rounded nose K to which is
securely attached one end of a steel band L, the opposite end being recessed into
and held by a swelling M of the internal pulley G, Figure 1. The steel band is
covered on one side with leather N, or its equivalent, and presses against the inner
periphery of the drum B as a friction brake when operated.
The pocket on the other side of the partition D encloses a brake formned of
segmental blocks of stone P, or other weighty material, and these are kept in their
respective positions by a steel band Q, the outer face of which is covered by
leather R for frictional contact with the intert. al rim S of the drum G when said
blocks P are caused to fly outward by rapid rotative motion of the winding drum B,
such rotative motion being imparted to the segmental brake by the pin T which
projects from the side of the drum B affixed to the shaft A and engages the gap
of
the segmental brake band as shown in Figure 2.
The action is as follows:-
When the speed of the shaft A which it is desired to regulate becomes excessive,
the friction clutch P under centrifugal action expands and bites the inner surface
of the drum G and causes it to rotate with it until it is arrested by the contact of
the lug F with the fixed arm E. This slight movement of the drum G in the
direction of the arrow, causes the jaw 1 to be moved by reason of its engagement
with the fixed tooth H upwards as also indicated by the arrow for its opposite end

page_text: to expand the brake band L, N, to bite the internal surface of the out drum B
and thus to check its movement, and therefore the movement of the shaft A to
which it is fixed. As it now runs slower the pin T will not turn the centrifugal
clutch P so rapidly and it will therefore release its frictional bite and allow the
bite of the brake band L, N, to be lessened until again put in action by increased
speed of the shaft A.
Instead of the foregoing arrangement, ratchet teeth can be formed in the rim
of the drum B see Fig. 4 which in this case is loosely mounted upon the rotating
shaft A. The collar U is mounted and secured to the shaft it is desired to
regulate, said collar U having an arm V with a paul W pivoted thereto to fly
outwards by centrifugal action to engage the internal ratchet teeth of the drum B.
which is gripped by an outside brake band X the amount of such grip or bite
being regulated by means of a weighted lever Y, or other suitable device
for controlling the pressure of the brake band X upon the drum B, to thereby
check & regulate the speed of said shaft A.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The arrangement and combination of appliances shown at Figures 1, 2 and 3
in the same apparatus affixable to or on the shaft, or spindle of any kind of
machinery for regulating, or determining the rotation thereof, as described.
2. Combining in the same apparatus the appliances shown at Figure I, and
the appliances shown at Figure 4 as means for automatically regulating and
determining the speed of shafts, or spindles for light running, and as means for
manually regulating the descent of heavy loads, or checking fast running of shafts,
or spindles, as described.
TL ON 1 1
T
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