No. 824,812.
PATENTED JULY 3, 1906.
H. R. PLIMPTON, 2D.
MAGNETIC APPARATUS.
APPLIUATION FILED FEB. 25, 1904.
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A TTOHNE YS
ÚNITED"I SA. ES ‘ PATENT.
hllli‘llCE..
HENRY RICHARDSON l’Llh/ÃÈTON, 2D, 0F NEWTÜN CENTER, MASSA
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CHUSETTS.
Mannini-io nement-us.
No. seriele.k
Speciñcation of Letters'ïatent.
Patented July 3, 1906.
Application filed February 25,1904. Serial No. 195.177
To all whom it may concern;
Under all conditions of construction the
Be it known that I, HENRY RICHARDSON body portions of the bar-magnets- are pro 55
PLrMPToN, 2d, a citizen oi the United States, vided with roll-shaped ends or heads consti
and a resident oi Newton Center, in ’the tuting pole-pieces, and I desire it to be un
county of Middlesex and State oi Massachu derstood that such bar-magnets may be'va
setts, have invented a new and improved ried in form or size or may be composed of
Magnetic Apparatus, of which the following one or more parts without departing from
is a full, clear, and exact description.
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vthe spirit of the invention, which is to pro
The invention relates to a novel magnetic vide means whereby bar-magnets may be
apparatus; and the object of the inventionis
Ito demonstrate in a new manner and by new
means the repelling power ci bar-magnets as
well as the attracting power.
'l‘he invention consists oi a suitable sup
made to revolve or rotate on their axes
through the medium oi roll-shaped heads,
ends, or pole-pieces.
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ln the form oi construction shown in Figs.
l, 2, 3, and ¿l the bar-magnet consists of a
port‘and a magnet having roll-shaped ends body 10 circular in cross-section; but it may
for engaging with the support, the magnet have other cross-sectional shape and roll
being free to revolve on its axis.
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heads or pole-pieces ll and l2 of greater di
rl‘he invention further consists inthe novel ameter than the body, so that the body is
construction and arrangement, as will be held from engagement with any support on
hereinafter fully described, and pointed out which the magnet may be placed. The
in the claims.
Reference is to be had to the accompany
heads or pole-pieces are termed “roll heads” 75
or .“ends," as they enable the bar-magnet to
ing drawings, forming a part ci this specifica-y turn or revolve on its axis by their means.
tion, in which similar characters of reierence
Under the i’orm of construction shown in
indicate corresponding parts inall the iigures. Figs. 5 and 6 the same result is obtained , but
Y Figure l is a perspective view oi an up the body 13 of the magnet is polygonal in
right steel rod and the improved magnet so cross-section and is -fitted in corresponding
placed thereon as to -automatically take a openings la in the central portion of the roll
spiral course around the rod without depart
heads, ends, or pole-pieces l5 and 16.
,
ing from engagement with the rod. llig. 2 is
The form oi the bar-magnet shown in Figs.
a perspective view of an inclined plane and 7 and 8 is practically the same as that illus 85
ktwo magnets placed thereon in attracting trated in Figs. 5 and 6, both forms being
_ position, where one serves Aas a bralre to the made in sections, and the only difference re
other, both remaining stationary on the in sides in the fact that the body 17 oi the mag
35 clined plane at such time. Fig. 3 is an end net shown in Figs. 7 andI 8 is round in cross
view ci the improved magnet made in one section and is let into and secured in circular
piece. Fig. ¿l is a longitudinal section openings i8 in the roll heads, ends, or polen 90
'through the magnet shown in Fig. 3, the sec pieces 19 and 20.
tion being talren on the line Ll of `Eig. 3.
With reference to the'construction shown
Fig. 5 is an end view oi the magnet in which in Figs. 9 and l0 the body 21 of the magnet
the magnet is secured to the roll-heads. Fig. . is shown round in cross-"section, although it
' 6 is a longitudinal section through the mag .may be otherwise formed, the feature oi this 95
net shown in l?ig. 5, the section being talren particularv bar-magnet being that the roll
practically on the line 6 6 ci Fig. 5. Fig. 7 is heads, ends, or pole-pieces 22 and 23 are com
an end view of the ‘form ci magnet shown in posed or spirally-wound wire round or dat in
the preceding iigures, but presenting a cross-section. ,
slight departure in the manner oi connecting
With reference to lï‘ig. l, one of the roll
the roll-heads with the body. AEig. 8 is a shaped magnets A is shown with its roll
longitudinal section talren'substantially on heads, ends, or pole-pieces in engagement
the line 8 8 oi 7Eig. 7.
TEig. 9 is an end view with an upright rod B oi suitable metal, the
>oi the magnet having its heads made oi
spirally wound or coiled wire, and Fig. l0 is a
longitudinal section taken practically on the
line l() ill oi Fig. 9.
body oi the bar-magnet being diagonal with '
respect to the rod, and after the improved
magnet is thus placed and released the mag'
net, with its rollmcnds, will revolve around
'824,812
and run down the rod in a spiral course by l
2. In a magnetic apparatus, a support, and
the force of gravity pulling downward and a bar-magnet comprising a straight body of
magnetism holding the revolving bar-mag desired cross-sectional 'shape' and roll-shaped
net piece to the said rod through the medium ends or pole-pieces at the ends of the body of
greater diameter than the body and adapted
of its roll ends.
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In Fig. 2 I have shown two of the improved to engage the support to permit the magnet
roll-magnets (designated as C) vlocated upon
an inclined plane «D withopposite poles pre
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sented, so that the said magnetic rolls attract
one another, forming a magnetic brake, per
mitting or compelling the two roll-magnets to
remain stationary on the inclined plane upon
which either magnet separately would rap
idly travel down. When like poles are pre’
sented and the roll-shaped >magnets are
placed on a level surface, the magnets will
rapidly repel or push each other apart. '
to revole on its axis.
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3. In a magnetic apparatus, a support, and
a bar-magnet having a straight body portion
and roll-shaped ends or pole-pieces at oppo
site ends of the body, and connected at their
centers with the'ends of the body, the roll 50
shaped end pieces forming continuous circu
lar poles, _adapted to engage the support, the
magnet being freeto roll in contact with said
support.
4.
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magnetic -apparatus comprising a rod 55
When unlike poles are'presented, either roll of metal, and a magnet having roll-shaped
ends for engagement with 'the rod to cause
will attract or lift the other.
In this new form of magnetic apparatus the magnet under the action of gravity J(pre
with roll-shaped ends or pole-pieces the mag volve around and run down the rod, as de
netic lines of force emanate radially from theV
5. A magnetic apparatus comprising an
periphery- of such roll-shaped ends and form
continuous circular poles. The magnetic upright rod of metal, and a magnet having a
scribed.
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apparatus hereinbefore described »is capable body portion arranged diagonally with re
of being used as a toy, but is adapted to va spect'to the rod, and roll-shaped ends of _ f
rious other and more’ practical uses. As a greater diameter than the body‘for enga e 65
toy'it is useful in demonstratingboth the re-. ment with the rod to cause the magnet un er
pelling. and attracting power of such mag the force of gravity to revolve around and
30 nets in a new manner not possible withusual
magnets of horseshoe' or plain bar form.
Having thus described my invention, I
run down the rod in a spiral course, as set
forth.
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In testimony whereof I have signed my 70
claim as new and ’desire to secure by Letters name to this specification in` thegpresence of
Patent-`
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1. In a magnetic apparatus, a support, and
magnets having roll-shaped ends' or pole
pieces for engaging with the support, thev
magnets being free to revolve on theiry axes'.
two subscribing witnesses. -
HENRY RICHARDSON PLIMPTON, 2D
Witnesses:
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JAMES L. PLIMPTON,
EDITH ALBEN PLIMPTON.