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Патент USA US2135209

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Nov. 1, 1938.
w. N. EDWARDS
2,135,209
LATCH
Filed Sept.’ 18, 1957
3 Sheets-Sheet l
a
INVENTOR.
?/jlliam M 541mm’;
gw
ATTORNEYJ.
NOV. 1, 1938. I
w, N_ EDWARDS
2,135,209
LATCH
Filed Sept. 18, 1957
/. 3
'
3 Sheets-Sheet 3
INVENIOR.
144mm mam/was
Patented Nov. 1', 1938
2,135,209
UNITED STATES PATENT OFFICE
2,135,209
LATCH
William N. Edwards,'White Deer, Tex.
Application September 18,1937, Serial No. 164,516
11 Claims. (Cl. 170—47 )
This invention relates to locks and particularly
to a lock attachment for windmills, windchargers
and the like.
An object of the invention is to provide an au
tomatic means for holding the rudder of a wind
mill out of the wind in inoperative position.
Another object of the invention is‘ to provide
a windmill lock disposed adjacent the mill head
and rudder which may be remotely controlled by
10 an operator from a ground or other suitable po
sition.
'
A further object of the invention is to provide
a Windmill ‘lock which relieves the strain on the
rudder pull out mechanism when the lock oper
15 ates to hold the rudder in inoperative condition.
A still further object of the invention is to pro
vide a lock mechanism for keeping the rudder
engagement latch in retracted position to pre
clude said engagement until the lock is condi
20 tioned by suitable actuation.
Another object of the invention is to provide a
means for operating the lock mechanism inter
mediate said lock and the operator’s station.
Other objects will be apparent from the fol
25 lowing speci?cation and drawings in which:
Fig. 1 is a fragmental perspective view of a
windmill with my lock mechanism positioned
thereon.
Fig. 2 is a plan view of the lock showing its
I
30 associated windmill elements.
Fig. 3 is a cross-sectional view taken on line
3-3 of Fig. 2.
vironment consists of a windmill head l5 rotat
ably mounted on a turn table I6, the latter be
ing supported upon a trestled tower structure l1. 5»
The front of the head carries a hub 18 to which
the spider support for the wind wheel vanes (not
shown) is attached. Mounted for vertical recip
rocating movement, impelled by the wind wheel,
is a pump rod l9 disposed centrally of the turn- 10
table and tower structure. Rearwardly of the
head and rotatably supported thereby is a rudder
structure 29 comprising two longitudinal angle
bars 2| fastened together by cross bars 22. A
suitable means for retaining the rudder in resil- 15
ient operative position longitudinally of the wind
wheel axis comprises an expansion spring 23 fas
tened to a lateral extension 24 on the head, the
free end of 'said spring engaging a cross bar (not
shown) of the rudder. This spring urges the 2,0
rudder toward a contraction spring 25 mounted
on a carriage 26 and rigidly fastened to the mill
head IS. A means for swinging the rudder out
of the wind to place the mill in inoperative con
dition comprises ‘a chain 2‘! fastened to the rud- 25
der by means of an adjustment rod 28. The
chain is led through the mill head and directed
to a vertical condition centrally of the tower in
any conventional manner such as by a roller 29.
The chain may be actuated by the operator from 30
a ground position in any suitable manner or by
"
a modi?cation‘ of the apparatus shown in Fig. 8.
Fig. 4 is a plan View of the primary latch mem
ber, part thereof being broken away.
Fig. 5 is a plan view of the lock, showing the
35
latch‘member in retracted‘ or locked-out posi
tion, the cross bar and primary latch lever be
ing shown in cross-section.
Fig. 6 is a plan View of the lock showing the‘
40 latch member in engagement with a cross bar
on the rudder, the rudder cross bar and lever be
ing in cross~section.
Fig. 7-is a plan view of the look after latch and
rudder disengagement andbefore the secondary
45 latch has been released, the cross bar and lever
being shown in cross-section.
The embodiment of my invention is particu
larly adapted to a windmill l4 and in this en
V
Fig. 8 is a fragmental side view of a modi?ed
form of my lock with a means for actuating said
lock.
Fig. 9 is a plan view of the modi?ed form show
50
ing its associated windmill elements.
Fig. 10 is a cross-sectional view taken on line
l0—l0 of Fig. 9.
Fig. 11 is a cross-sectional view taken on line
'
55 l.l--II of Fig. 8.
My lock 3|] is disposed adjacent the path of
the chain intermediate the chain adjustment rod
and the point where said chain enters the mill 35
head, and consists of a base 31 having a down
wardly extending ?ange 32 which is fastened to
an extension 33 of the mill head by bolts 34. The
bottom of the base is provided with a frame 35
(Fig. 3) which holds a grooved roller 36 for re- 40
ceiving the chain 21. Aprimary latch member
31 is rotatably mounted on the base by means
of a pin 38' and is spaced therefrom by a riser
39. The primary latch member has a lock-out
notch 40 (Fig. ll) formed in its outer side which 45
is adjacent a deeper and inclined release notch
41, said notches being so disposed as to engage
a primary latch lever 42 which is pivotally
mounted on the base by a threaded pin 43, and
spring-urged toward the lock notch by spring 50
44 engaging said lever by pin 45 and fastened
to pin 38 by suitable washer 46. The lower end
of the lever carries a ring member 4‘! (Fig.3)
through which the chain 21 passes intermediate
the roller 35v and adjustment rod 28. The pri- 55
2,135,209
2.
mary latch member 31-is spring urged against
54, and permits the primary latch member 31
pin 49 driven in the side of the primary latch
It will be noted that when the primary latch
lever 42 is in the lock out notch 48 the primary
latch member 31 is held out of the path of move
ment of the rudder cross bar and the latter will
not engage the indentation 5| until the primary
latch lever 42 is moved by the lug B2 on the chain
21. This permits the rudder to swing in or out
during normal operation of the mill. The pri-
the lever by an expansion spring 48 (Fig. 3), a , to resume the position indicated in Fig. 5.
member serving as a positioning means between
the spring and said member. The free end of
this spring bears against a downward extension
50 on a pivoted secondary latch lever 5|. The
secondary latch is mounted upon the base 3| by
two lugs 52 between which said latch is held by
10 a pivot pin 53. The spring 48 therefore serves
to urge the primary latch against the lever 42 and
to urge the secondary latch upon an inclined
' secondary latch catch 54 projecting from. said
'
.mary latch lever 42 cannot be actuated unless
the chain is moved, due to the fact that there
is su?icient slack between the chain lug and the
primarylatch member. A secondary latch re-'
' 'A modi?cation of my lock is shown in Figs. 8, 9,
15 lease is provided by a ?nger 55 rotatably mount-' and 10 and comprises a base 63 having a down;
rudder.
.ed on the primary latch member by a bolt 56.
The ?nger is normally held extended beyond the
'
'
ward flange 64 fastened to an extension 65 on
A vane or rudder
member into the path of the .rudder cross bar . the mill head 56 by bolts 51.
68 having a cross bar 82, is mounted for rota
tion upon the head. A chain 69 adapted to bring 20'
rate and pointed secondary latch trip piece 59. the rudder out of the wind, is led to a roller 10
which, when the secondary latch is operative, is positioned on a bracket ‘H beneath the base 763'
adapted to trip said member by wedging between and is then led in a suitable manner through
the primary latch member and a lug 60 on the the mill head as by roller 12. A primary latch
secondary latch lever thereby raising the latter member 13 is rotatably mounted on the-base by 25
means of a pin 14, and is spaced therefrom by
to disengage it from the latch catch 54.
1 The primary latch is devised to hold the rudder - riser 15. A secondary latch‘ lever l?is pivotally
in inoperative ‘position orv out of the wind and mounted upon the base by pin 71, the primary
to this end an indentation BI is 'formed in it to latch being urged against it by spring l8hooked
to a lug 19 on themill head. The secondary
3.0 receive a cross bar 22, on the rudder when the latch lever has a lock out notch 88 formed therein "
latter is swung adjacent the indentation by
meansof chain 21 provided the lock is placed in and an upper notch 8|. The notches on'the
by a spring 51 fastened to a pin 58 on the pri
"
mary latch member.
20
proper condition.
The ?nger carries an arcu
‘
-
, In operation the position of the rudder is
’ changed from that shown in Fig. 1 (in the wind)
in Figs. 9 and-10, the primary latch lever is in
the‘ chain 2‘! downwardly; This action swings
the rudder substantially 90 degrees‘ so that the
cross bar 22 thereon is adjacent the indentation
6| ,formed' in the primary latch member 37.
member is’ held‘out of the path of contact with
the ruddercross bar 82 to permit said rudder to
circular lug or ring‘ 62 fastened on the chain
adjacent the adjustment rod 28 contacts the ring
member 4'!v on the primary latch, lever. Upon
45 furtherrdownward movement of the chain 21,
this lug moves the primary latch lever from the
look-out notch 48 to aiforward position which
allows the primary latch member 3'I't0 be moved
outwardly by spring 48 thereby placing the pri
mary latch lever in the deeper ‘inclined notch .4I
50 formed in the primary latch member.
The latch
then engages‘ cross bar 22, as shownin Fig. 6.
Thev downward pressure on the chain is there
after released and the rudder or vane is held out
of the wind, that is, in an inoperative position
55 by indentation 6| for any desired length of time,
thus eliminating all strain upon .the chain and
other associated mechanism.
Toplace the mill in operative position the
chain 21 is pulled downwardly which moves the
60
primary latch lever 42 to a. position indicated
in Fig. '7. This further movement of the lever
retracts‘the' primary latch 31 to a position where
the secondary latch lever 5| looks upon the latch
catch
54. The chain is then released which per
65
mits the rudder to swing clear of indentation 6|,
and also vallows the primary latch lever, 42 to
move back into'the lock-out notch 48 by action
of the spring 44. Upon further movement of
the ‘rudder away'from the indentation 6| the
cross bar 22 contacts ‘and swings the release
?nger 55 ‘wherebytrip 59 is introduced between
75
mary latch member byspring 190 which is fas
tened to the base bracket by lug 888. As shown
to ‘the position indicated in- Fig. 5 by drawing
When, the cross bar is'in the latter position a V
70
lever are urged into engagement with the pri
the primary latch lever and the lug 60' on the
secondary latch lever‘ 5l.' ‘This action raisedthe
secondary latch'lever above the inclined catch
the lock out notch; Inlthis position,‘ the latch
swing in or out for wind control.
7
40,
To operate this lock, the chain 69 is pulled
downward causing the, rudder to swing inwardly
adjacent an indentation 83 on the primary latch '
member.
A secondary chain84, attached to the
lower end of ‘the’ secondary latch lever, is then '
pulled downwardly’ which allows the primary
latch member 13 to fall into upper notch 8| on the .
lever 16. This action brings the indentation 83
on the primaryflatch member’ into engagement
with the cross bar 82 on the rudder. ‘The lock
is then in a position to hold the rudder out ‘of
the wind and the downward pressure on the chain
69 can~be released. To place the mill in oper
as
ative position,_the chain 84is again pulled down
wardly to permit a curved-portion 85 on thelever
15 to retract the primary latch member and its
65',
indentation 83 away fromrthe cross bar 82, chain"_
69 taking the position shown in Fig. 9‘.
It will be understood that in a high wind, the
vane'or rudder must be free to swing in order 00
to ‘control the mill. For this purpose, the lock
means are so constructed that if, during regular
operation of the mill in such a wind, the rudder
is swung over to the lock, the cross bar 82 con- '
tacts the .outer edge of the arcuate right hand end .
of the latch member 13 (as seen in Fig. 9) and
swings this'end of said member inwardly. The
opposite end of latch member 13,-moving out the
upper notch 81 of the lever 15, is immediately-en;
gaged by the lower notch so that the rudder
engaging end ‘of the latch member 16, comprising
the indentation 83, is held back out of the path
of cross bar 82, leaving the rudder free to swing
with the wind. , To lock the mill now it is merely
necessary to pull chain 34 (Fig. 10) whereby latch 75
2,135,209
member '16v and its indentation B3.springs? into en—'
gaging'position relative'to the rudder cross bar.
' A novel means of operating the chains 69 and
84 is shown inFig. 8. These means comprise a
swivel member. 86 having a circular .aperture 81
which slidably receives the windmill pump rod 88.
The chain 69 is attached to. a vertical rod 89, the
lower end of the rod being fastened to'the swivel
by pin Bl]. Chain84, attached to a ‘vertical rod
10 9| which runs slidably through a vertical aper
ture in the swivel 86, is fastened to a lower swivel
member 92. The lower swivel has a circular aper
ture to receive-the pump rod. To preclude any
substantial rotation of the swivels, bars 93 are
fastened thereto and extend'beyond the legs 94
of the windmill trestle, said legs. thus limiting
swinging movement of the bars 93. The two
swivels may be urged or pulled downwardly by any
suitable means as for instance a Windlass or lever
arrangement.
The means of the present invention, while dis
closed herein as associated with a windmill, are
of such character as to be utilized in other
environments where a similar relationship be
tween‘ a driving means and a control is present,
the essence of the invention comprising a directive
3
upon attainment of suchposition for actuating
the lever to release the latch member into en
gagement with the vane, means for further ac.
tuating the lever to retract the latch member
from engaging relation with the vane, secondary
latch means cooperating with the primary latch
member and operative upon retraction of the
latter for restraining the primary latch member
until the vane has moved clearof said engaging
means, and trip means contacted by the vane 1.0
after said clearing movement thereof and releas
ing the secondary from the primary latch mem
ber.
.
4,. Latch means adapted to be associated with
a pivotally mounted vane, said latch means com 15
prising a primary latch member pivotally mount
ed adjacent the path of pivotal movement of the
vane, a lever pivotally mounted adjacent the
latch member, resilient means for‘ urging the
latch member into- the path of the vane and for 20
yieldably holding the latch member and lever
in contact with one another, means whereby the
lever normally holds the latch member out of
the path of contact with the vane, means on the
latch member for engaging the vane, means for 25
swinging the latter to bring the vane and said
member of a class of a vane orrudder pivotally
mounted and a latch member associated there
engaging means into adjacency, means operative
with for selectively holding. the directive ‘mem
ber in an inoperative position but adapted to be
the lever to release the latch member into engage,
ment with the vane, means for further actuat 30
ing the lever to retract the latch member from
engaging relation with the vane, secondary latch
means cooperating with the primary latch mem
ber and operative upon, retraction of the latter
for restraining the primary latch member until 35
the vane has moved clear of said engaging means,
and means for releasing the primary from the
secondary latch member.
conditioned in such manner as normally’to pre—
clude latching of the directive member so that
the latter will remain operative for long periods
of time without observation or adjustment on
the part of the operator.
'
What is claimed is:
l. Latch means adapted to be associated with
a pivoted vane, said means comprising a latch
member pivotally mounted adjacent the path of
40 pivotal movement of the vane,,;resilient means
urging thelajtch member to pivotal movement into
said path, a lever pivotally mounted adjacent and
normally holding the latch member out of the
path of the vane, means on the latch member‘ for
engaging the vane, means for actuating the lever
to release the latch member into engagement with
the vane, and means to release the vane from
such engagement.
2. Latch means adapted to be associated with a
50 pivotally mounted vane, said latch means com
prising a latch member pivotally mounted ad
jacent the path of pivotal movement of the
vane, resilient means urging the latch member to
pivotal movement into said path, a lever pivotally
mounted adjacent and normally holding the latch
member out of the path of the vane, means on the
latch member for engaging the vane, means for
actuating the lever to release the latch member
into engagement with the vane, and means to re
lease the vane from such engagement, and to
restore the lever to normal position.
3. Latch means adapted to be associated with
a pivotally mounted vane, said latch means com
prising a primary latch member pivotally mount
ed adjacent the path of pivotal movement of the
vane, a lever pivotally mounted adjacent the
latch member, resilient means for urging the
latch member into the path of the vane and for
yieldably holding the latch member and lever in
contact with one another, means whereby the
lever normally holds the latch member out of the
path of contact with the vane, means on the
latch member for engaging the vane, means for
swinging the latter to bring the vane and said
75 engaging means into adjacency, means operative
upon attainment of such pesition for actuating ‘
5. Latch means adapted to be associated‘ with
a pivotally, mounted vane, said latch means com! 40
prising a latch member pivotally mounted ,ad
jacent the path of pivotal movement of the vane,
a lever pivotally mounted adjacent the latch
member,‘ resilient means for urging the latch
member toward the path of pivotal movement
of the vane and for yieldably holding the lever 45
and latch member in contact with one another,
means on the latch member for engaging said
vane when the latter is brought adjacent thereto
by pivotal movement of the vane, means for ad
justing contact relation between the latch mem 50,
ber and lever whereby the former in one position
is held by the lever out of the path of the vane
and in another position is released thereby into
said path for engaging the vane and holding the
vane inoperative, means for retracting the latch 55
member from the vane by further movement of
the lever, means associated with the latch mem
ber and operative upon such retraction thereof
for holding the latch member retracted to pro
vide for clearing of said engaging means by the
vane, and means associated with the latch mem
ber and contacted by the vane upon movement
of the vane toward operative position for releas
ing the latch member, said lever and latch mem 65
ber being thereby restored to a normal relation
wherein the latter is held out of the path of the
vane by the lever.
6. Latch means adapted to be associated with
a pivotally mounted vane, said latch means com 70
prising a latch member pivotally mounted ad
jacent the path of pivotal movement of the vane,
resilient means urging the latch member into
said path, means on the latch member for en
gaging the vane, a lever pivotally mounted ad
4
2,135,209
‘ V-jacent ‘the latch’lmember, means on‘th'e lever
adapted to cause the latter in one position'to
hold'the latch member out of said path ‘and in
another position to- effect’ its projection there
into, and means for actuating the lever into said
positions.
‘
“
7'
.
'
a
'7. Latch means adapted to be associated with
a pivotally mounted vane, said latch means com
prising‘ a latch member pivotally mounted ad
10 jacent the path'of pivotal movement of the vane,
resilient‘ means urging the latch member into
said path, means on the latch member for engag
ing the vane, a lever pivotally mounted adjacent
the latch 'member, means on the lever, adapted
15 to cause the latter in one position to hold the
latch. member out of said path and in another
position to effect'it's projection thereinto, means
.forractuating the lever into said positions, and
_ means for yieldably holding the lever in its given
positions.
.
8. Latch means adapted to be associated with
a pivotally mounted vane, said latch means com
prising a latch member pivotally mounted ad;
jacent the path of pivotal movement of the
vane-resilient means urging the latch member
into said path, means on the latch memberfor
engaging the vane, arlever pivotally mounted ad
, jacent the latch member, means on the lever
adapted to cause the latter in one position to
hold'the latch member out of said path and in
another position to effect its projection there
into, means for actuating the lever into said
positions, means for yieldably‘holding the lever
in its given positions, and means on the latch
member adapted upon contact of said member
by the vane toimo've the latch member out of
the path of the vane.
_.
9. The combination with a longitudinally mov
able shaft or the like having a pair of independ
40 ently'operable chains, cables or similar devices
disposed adjacent thereto and substantially par
allel therewith, of ‘a swivel member slidably em
7
bracingithei'shaft and having one of said ‘chains’
attached thereto for actuation upon slidable
movement of the swivel member, said swivel
member being.’ provided with an aperturelfor
slidably receiving the other of said chains, and
a second swivel member slidably embracing said
shaft below the ?rst swivel member and having
said other chain attached thereto for actuation
upon slidable'movement of the second swivel
member.
.
'
.
.
V
10
'
10. A windmill comprising a support, a wind-.
wheel and vane therefor rotatably mounted'on
the support, the vane‘ being associated with the
wheel for normally facing the latter intov the
wind, means providing for pivotal movement of 15
the vane relative to the Wheel and out of operative
relation therewith, upon the imposition of un-'
usual stress upon the vane, means normally re
storing the vane to operative alignment withthe
wheel subsequent to such stresses, a latch mem 20v
ber on said support adapted to engage the vane
upon pivotal movement of the latter into a posi
tion adjacent the latch member, and‘ means to
condition the latch member for precluding en-»
gagement thereof with the vane to provide for
25'
normal uninterrupted operation of the windmill,
11. In combination, a directive member of the
class of a vane or rudder mounted for pivotal
movement transversely of its longitudinal axis, .
a. movable latch member mounted independently 30
of the directive member, the latter in operative
position being disposed relatively remote from
the latch member, means normally holding the
latch member in the path of pivotal movement . '
of the directive member for engaging, the latter
35
upon pivotal movement thereof to a position ad
jacent the latch member, and means to condition
the latch member for normally precluding such
engagement upon such pivotal movement of the
directive member.
.
Y r
WILLIAM N. EDWARDS.
.
40
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