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Патент USA US2121895

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June 28, 1938.
Filed Oct. 16, 1955
2 Sheets-Sheet 1_
June 28, 1938.
\ Filed Oct. 16, 1935
2 Sheets-Sheet 2
@0 —
Patented June 28, 1938
William Toward, Poland Mines, and Alexander
Toward, Eightyfour, Pa.
Application October 16, 1935, Serial No. 45,366
1 Claim.
(Cl. 172-126)
This invention relates to an electric power ap
2 are mounted on and surround the cylinder I.
paratus providing reciprocating movement adapt
An important feature of the present invention is
that the solenoids 2 are positioned ?atly against
each other on the cylinder I, and each is distinct
and: separable from the others, whereby any of
ed for use in connection with the operation of
power rams and hammers, mine shaft gates and
5 mine car movements, or for any other purposes
wherein it is found to be applicable.
Important objects of the invention are to pro
the solenoids may be readily removed from or
vide a power apparatus of the character de
scribed, which may be employed as a power de
repairs or any other purposes.
A cylindrical core or piston armature 3, of any
10 vice for operating various mechanisms, which
may be controlled from points remote therefrom,
which is simple in its construction and arrange
ment, which embodies few moving parts, which
is quick and positive in its action, and economical
15 in its manufacture, operation and maintenance.
With the foregoing and other objects in view,
which will appear as the description proceeds, the
invention resides in the novel construction, com
bination, and arrangement of parts herein speci?
30 cally described and illustrated in the accompany
ing drawings, but it is to be understood that the
latter is merely illustrative of an embodiment
of the invention, and that the actual needs of
practice and manufacture may require certain
5'; mechanical variations from the embodiment
shown. It is, therefore, not intended to limit the
invention to the disclosure thereof herein illus
trated, but rather to de?ne such limitations to
the scope of the claim hereunto appended.
In the drawings wherein like numerals of ref
erence designate corresponding parts throughout
the several views:
Figure 1 is a side elevational view, partly in
cross section, of an electric power apparatus con
Ur structed in accordance with the invention.
Figure 2 is a diagrammatic view of thewiring
and switch element involved in the operation of
the device.
Figure 3 is a top plan view of the adjustable
,LO connecting elements embodied in the present in
Figure 4 is a side elevational view, partly in
cross section, of a modi?ed embodiment of the
Figure 5 is an enlarged bottom plan view of
the core or armature and stabilizer mounted in
the associated cylinder, the latter being in cross
Figure 6 is an enlarged, fragmentary, cross
50 sectional view of the stabilizer.
Referring in detail to the drawings, Figure 1
illustrates a horizontally disposed, electrically op
erated, power apparatus, comprising an elongated
tubular cylinder I constructed from any suitable,
'55 non-magnetic material. A plurality of solenoids
replaced on the cylinder I, when required for
suitable construction, is shiftably mounted for
longitudinal movement in the horizontally dis
posed cylinder I. A forwardly projecting piston
rod 4 and a- rearwardly projecting stabilizing rod
5' have their inner ends ?xed, in any suitable
manner, in the diametric centers of respective 15
endsv of the piston armature 3, and are longi
tudinally aligned relatively to each other, and
with respect to the piston armature 3.
The cylinder I, with its associated elements,
is carried by a pair of suitable bearing supports
6, which engage respective ends thereof, and are
?xed on a suitable base 1.
Each of the bearing
supports 6 is provided with a pair of vertically
aligned, revolubly mounted, grooved guide wheels
8, which‘rod
5, respectively,
the piston rod
for the
4 and
the sta—
maintaining the accurate alignment of the ar
mature 3 and rods 4 and 5 in the cylinder I, and
to permit the reciprocal movements of these ele
ments in the latter with a minimum of friction, 30
during the operation of the device in the manner
to be described.
The upper or top portions 9, of the bearing
supports 6, are detachable to permit their re
moval and thereby allow the ready removal of 3
the cylinder I and associated parts from the bear
ing supports 6 when required for any purpose.
The piston armature 3 and the rods 4 and 5
are held against rotation in the cylinder I, by
means of an arm II], which is on the inner end
portion of the piston rod 4 and has its free end
engaged in a longitudinally extending groove II
formed in the'inner wall of the cylinder I.
The outer end of the piston rod 4 is formed
with a socket head I2 carrying a set screw I3, 45
whereby suitable work engaging elements may be
attached to or engaged by the outer end of the
piston rod 4. In the embodiment illustrated in
Figures 1 and 3, a grooved adjusting bar I4 is
provided‘, including a shank I5, which extends 50
into the socket head I2 and is secured in the
latter by means of the set screw" I 3. The work
engaging elements further include a clevis I6,
suitably apertured for the reception of a con
necting pin- IT. The clevis I6 is provided with 55
a ?xed connecting bar I8 adjustably engaged in
the grooved adjusting bar I4. The latter carries
a set screw I9 for securing the connecting bar
I8 in the adjusted position. By this arrange
ment, the adjusting bar I4 may be adjusted to
any angle on the socket head I2, and the clevis
I6 may be adjusted to any required position on
the adjusting bar I4.
Our improved power apparatus is particularly
adapted for shifting mine cars, and Figure 1
illustrates the attachment of the connecting ele
ments with a mine car 20. If the shifting of the
cars can be effected by a pushing operation and
no holding or other control is required, the use
of the connecting pin I1 is not necessary, but the
use of the latter is essential for pulling operations,
and when the holding or other control operations
are required.
trated as applied for operating a vertically shift
able mine shaft gate 28. The latter is arranged
for being opened and closed, and is shiftably en
gaged on a pair of spaced, vertically extending
guide bars 29. Stop members 38 are carried by
the guide bars 29 to limit the elevating move
ment of the gate 23.
A pair of coil springs 3i is
shiftably mounted on the guide bars 29 above the
gate 28 for cushioning the impact of the latter
when reaching its elevated or open position. A
pair of coil springs 32 are mounted on the guide
bars 29 below the gate 28 for cushioning the im—
pact of the latter when reaching its lowered or
closed position.
It will here be noted that while the rod 5 is
primarily intended for stabilizing the reciprocal
movements of the armature 3 and piston rod 4
during the operation of the device, the said
stabilizing bar 5 may also be provided with con
necting elements or employed as a power impart
ing member for effecting any operations where
in it is found to be applicable.
The wiring arrangement, illustrated in Figure
2, provides for the manual control of the power
apparatus. The negative terminals 2I of the
solenoids 2 all join with one main conductor 22
of the electrical source of supply, while the
other main conductor 23 is connected with a
switch contact bar 24, which is pivoted, cen
trally of its length, on a switch plate 25. The
positive terminals 26 of the solenoids 3 are con
nected with respective contacts 21 mounted in
the switch plate 25.
bearing 26 mounted on the top of the cylinder 2I.
The bearing 26 includes a pair of grooved guide
wheels 21, which engage the piston rod 25.
The modi?ed form of the apparatus is illus
The contacts 21 are ar
ranged for alternate contacting engagement by
respective ends of the switch bar 24, so that the
solenoids 3 will be energized consecutively in the
sequence of their positions on the cylinder I, and
so that an energized solenoid will not be de
energized until the following solenoid is ener
gized to thereby exert the greatest attraction to
effect the shifting of the armature 3 in the cyl
inder I.
By shifting the contact bar 24 alternately in
the clockwise and counter-clockwise directions to
engage respective contacts 27, the solenoids 2
will be energized in their proper sequence to ef
fect the horizontal reciprocal movement of the
piston armature 3 and of the rods 4 and 5 ?xed
to the latter. The length of the stroke is, of
course, determined by the length of the cylinder
I and the associated solenoids 2. The'movement
of the armature 3 is arrested or stopped and held
in the cylinder I by stopping the movement of
the contact bar 24 while the latter is engaged
with any of the contacts 21 to thereby energize
60 respective solenoids, whereby the armature 3 may
be held against movement at any required point
in the cylinder I. When. the contact bar 24 is in
the neutral position, as shown, all solenoids are
deenergized and the armature is free and idle in
the cylinder I.
In the modi?ed form of the device, shown in
Figure 4, the power apparatus is disposed verti
cally, and comprises a vertically extending cylin
der 2| ?xed on a suitable base 22. Solenoids 23
surround the cylinder 2I and are positioned in
super-imposed relation to each other.
A cylindrical piston armature 24 is shiftably
mounted for vertical movement in the cylinder
2I. A piston rod 25 is ?xed in the armature 24
75 and extends vertically upward through a suitable
The outer end of the piston rod 25 is provided
with an eye member 33, and a cable 34 has one 20
end thereof secured in the latter. The cable 34
passes over suitably positioned sheaves 35 and
has its other end secured to the gate 28.
The gate 28 is intended to shift to the lowered
or closed position by gravity, and counter-weights
36 are mounted on the upper end portion of the
piston rod 25 to permit the positive closing or
lowering of the gate 28 by gravity, but requiring
a relatively small amount of power to shift said
gate 28 to the open or elevated position.
A stabilizing member 3'! is ?xed, by means
of a bolt 38, in the diametric center of the
lower end of the armature 24 for stabilizing the
latter and maintaining same in proper alignment
in the cylinder 2|. The stabilizing member 31
comprises a hub 39 provided with a plurality of
radially disposed, hollow arms 46. A wall en
gaging element 4| is carried by each of the arms
46 and radially shiftable in the latter.
Each of the elements 4| comprises a revoluble
member 42, preferably in the form of a ball,
which is mounted in a suitable casing 43. The
latter is provided with a ?xed stem 44 extending
into outer open end of respective arms 40.
A coil spring 45 is mounted in each of the arms
40 and engages the inner end of the stem 44 for
tensionally forcing the revoluble member 42
against the inner wall of the cylinder 2I, to e?ect
the stabilization of the armature 24 in the latter.
One or more vertically extending grooves 46 may 50
be formed on the inner wall of the cylinder 2I
to provide de?nite paths of travel for the rev
oluble members 42 for preventing the turning of
the armature 24 and associated piston rod 25 in
the cylinder 2|.
A vertically disposed contact bar 4'! is ?xed to
the base 22 and bearing 26. A contact 48, for
each of the solenoids 23, is ?xed in the bar 4'! and
joins with the positive terminal 49 of respective
solenoids 23.
The contacts 48 are vertically 60
aligned and equally spaced from each other.
A substantially L-shaped, resilient contact sup
port 50 is fixed to the upper end portion of the
piston rod 25, and its connection with the latter
provides a seat for the counter-weights 36. An 65
elongated contact member 5| is ?xed against the
inner side of the lower end portion of the sup
port 56, and is of a length to simultaneously con
tact with one or two adjacent contacts 48 on the
latter, as illustrated in Figure 4.
One of the main conductors 52 of the electrical
source of supply is connected with the contact
member 5|, and the other connects with the ter
minals 53 of the solenoids 23.
When the solenoids 23 are deenergized, the gate 75
28 will shift by gravity to the lowered or closed
position, and the piston armature 24 will be in
the elevated position in the cylinder 2|, as shown
in Figure 4. To elevate the gate 28, the control
switch is closed to energize the uppermost of the
solenoids 23, whereby the armature 24 will be at
tracted to shift downwardly in the cylinder 2|.
As the piston rod 25 carries the ?xed contact
support 50, the downward travel of the latter will
10 cause the contact member 5| to engage the con
tacts 48 on the contact bar 41 and thereby ener
gize the solenoids 23 in the sequence of their posi
tions on the cylinder 2|, whereby the gate elevat
ing operation is e?ected automatically, except for
15 closing the control switch at the start of the
elevating operation. The gate 28 will be held in
its elevated position as long as the lowermost
solenoids 23 remain energized, and when the lat
ter are deenergized, by opening the control
switch, the gate 28 will shift to the lowered or
closed position, and draw the armature 24 to the
top of the cylinder 2| for subsequent elevating
control, which may embody control elements
capable of providing automatic and continuous
reciprocal motion, and which may be successfully
employed in many various types of mechanisms
operable by connection therewith.
What we claim is:
In an electro-magnetic power mechanism of
the character described, the combination of a
tubular cylinder, a plurality of solenoids mounted
on and surrounding said cylinder, a reciprocating 10
core mounted in said cylinder, means for support
ing said core in said cylinder, the inner face of
said cylinder being provided with a plurality of
longitudinally extending grooves, a hub fixed
to said core, a plurality of radially disposed hollow 15
arms secured to said hub, a stem mounted in and
radially shiftable in each of said arms, a casing
?xed to the outer end of each of said stems, a
revoluble ball carried in each of said casings, and
a. spring mounted in each of said hollow arms and 20
engaging respective stems for tensionally forc
ing said revoluble balls into said grooves for sta
bilizing said core in said cylinder.
The present invention provides a most e?i
25 cient power apparatus of the character set forth,
which may be operated and regulated by remote
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