Motor Page: 5 of 8
[4], 4p. : ill. ; 23 cm.View a full description of this patent.
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UNITED STATES PATENT OFFICE.
LEONARD MILLER, OF BROWNWOOD, TEXAS.
MOTOR.Specification of Letters Patent.
Patented Apr. 6,1915.
Application filed May 5, 1914. Serial No. 836,514.
To all who'im it may concern:
Be it known that I, LEONARD MILLER,
citizen of the United States, residing at
Brownwood, in the county of Brown and*
5 State of Texas, have invented certain new
and useful Improvements in Motors, of
which the following is a specification.
This invention relates to motors and has
for its object the provision of a compact
10 and simply arranged mechanism by which
the expansive power of metal may be uti-
lized to drive machinery.
A further object of the invention is to
provide means whereby a metal bar or se-
15 ries of bars may be alternately subjected to
heat and cold so as to be successively ex-
panded and then contracted and the conse-
juent lengthening and shortening of the
bar utilized to apply power.
20 A further object of the invention is to
provide means for automatically controlling
the passage of the heating and cooling
agents to the bar or bars, and a further ob-
ject of the invention is to provide means
25 for overcoming' a dead-center should the
motor come to rest at such point.
The several stated objects of the inven-
tion, and such other objects as will inciden-
tally appear from the following description,
so are attained in such a mechanism as is illus-
trated in the accompanying drawings, and
the invention consists in certain novel fea-
tures which will be particularly pointed out
in the claims following the description.
35 In the drawings, Figure 1 is a front ele-
vation of a motor embodying my present
invention; Fig. 2 is a rear elevation of the
same ; Fig. 3 is an end elevation thereof ;
Fig. 4 is a detail view of the starting mech-
40 anism; Fig. 5 is a longitudinal section;
v'ig. 6 is an end view of one of said bars;
Fig. 7 is a horizontal section taken on the
line 7-7 of Fig. 1.
In carrying out my invention I employ
45 an upright standard or frame 1 vhichis
secured rigidly upon a base 2 and suitably
braced by webs or diagonally disposed
frames 3. The main frame or standard 1 is
open through its center so as to accommo-
50 date the moving parts and connections and
may, of course, be of any desired size. At
the front and rear of the said frame I ar-
range a plurality of hollow metal bars 4
which are preferably of aluminum and are
55 connected in a series so that motion may be
transmitted from one end of the series to theother, and at the latter end utilized to oper-
ate a movable member. A lever 5 is ful-
crumed at one end to an upper corner of the
main frame, as indicated at 6, and one of 80
the end bars 4 is pivotally connected to the-
said lever adjacent its fulcrum by means of
a split collar 7 carried by the said bar and
secured around a pin 8 projecting from the
lever. The bars may be of any desired num- 6
ber and in the present instance I have shown
six bars at each side of the main . frame,
the end bar at the rear of the frame and ad-
jacent the fulcrum of the lever 5 being at-
tached at one end to a fixed stud or resist- 10
ance block 9. The said bar has a threaded
post or stem 10 secured in its upper end, as
clearly shown in Fig. 2, and the said stem
or post projects through the said resistance
block 9 so as to extend above the same. A 75
spring 11 is coiled around the stem above
the said block and an adjusting nut 12 is
fitted upon the stem above the spring so as
to regulate the tension thereof.. A nut 13
is fitted upon the stem below the resistance 8o
block and is adapted to bear against the
said block so as to receive the motion of
the bar, the spring 11 tending to maintain
the nut 13 against the resistance block and
also serving as a governor to prevent spas- 85
modic or uneven movement of the parts.
The lower end of the said bar carries a
bracket 14 terminating in a split collar 15
which fits around a stud 16 at one end of
a lever 17 which is fulcrumed upon the go
lower portion of the frame 1. The opposite
end of the said lever is provided with a
similar crank pin 18 to which is fitted the
lower end of. the next adjacent motor bar,
as clearly shown in Fig. 2. The upper end 05
of the said second motor bar is similarly
connected with a lever 19 which forms a
connection between the said bar and the
other motor bar, and is suitably fulcrumed
upon the upper portion of the main frame. loo
The seme form of connection is utilized
roqu g'a the series so that each bar is con-
nected at its lower end to a bar at one side,
and at its upper end to the bar at the op-
posite side. The bar at that end of the 105
series more remote from the initial bar,
which will, for convenience, be referred to
as the anchor bar and is connected to the re-
sistance block 9 in the manner shown and.
described, is disposed somewhat obliquely 110
and has its upper end connected to one
crank 20 of an angle lever 21 which is ful-'1,134,14'7.
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Miller, Leonard. Motor, patent, April 6, 1915; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858192/m1/5/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.