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Патент USA US2108040

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Feb. 15, 1938.
w. R. BLUEH'DORN ET AL
v v2,108,040
LATCH
Filed March 15, 1937
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Inventors
William; R-E|luehdnrn
Forrest K?uwar'd
Pam
At urney
g'atented Feb. 15, 1938
V
UNITED STATES PATENT OFFICE
2,108,040
LATCH
William R. Bluehdorn, Hartford, Conn, and For
rest 'K. Howard, East Falls Church, Va.
Application March 15, 1937, Serial No. 130,964
2 Claims. (01. 285-146)
(Granted under the act of March 3, 1883, as
amended April 30, 1928; 370 0. G. 757)
The invention described herewith may be man-
perpendicular to the axis of said member. When
ufactured and used by or for the Government for
governmental purposes, without the payment to
the latch is in locking position the members 5
and 6 are incapable of rotational displacement.
, usof any royalty thereon.
D
This invention relates to a latch for threadedly
connected members.
The purpose of the invention is to provide a
simple and conveniently operable latch for main10 taining the relative connected position of a pair
of threaded members.
To these and other ends, the invention consists in the construction, arrangement and. combination of elements described hereinafter and
1; pointed out in the claims forming a part of this
speci?cation.
A practical embodiment of the invention is illustrated in the accompanying drawing, wherein:
Fig. 1 is a longitudinal sectional view of threaded members with the latch in locked position.
20
Fig. 2 is a similar view with the latch in un-
locked position.
Fig. 3 is a plan view.
Fig. 4 is an end view.
7
Referring to the drawing by characters of ref35 erence there are shownapair of cylindrical members 5 and 6 respectively having an externally
threaded end 1 and an internally threaded end
8 whereby they are rotatably and separably connected.
In order to maintain a predetermined angular
locking position.
The latch includes a long actuating arm ll
having a bent extremity I 8 which engages the 10
member 5 when the latch is in locked position.
A recess I9 is formed in the members 5 to facili
tate grasping the tail of the arm I‘! or to permit
insertion of a member (not shown) for prying
the latch upwardly.
15
We claim:
1. A pair of rotatably connectable members,
the end of one of said members having a curved
serrated face, the other member having an open
ing and a transverse groove in its outer surface 20
extending on opposite sides of the opening, spaced
lugs on said other member at opposite sides of
the opening and having apertures coaxial with
the groove, a pin passing through the apertures
of the lugs and resting in the groove, a latch 2'5
passing through the apertured lugs and, in order
that the central portion of the pin may be posi-
mounted on the pin between the lugs and par
tially disposed in the opening, a short arm on
the latch having a curved serrated face for en
gaging the complementary face of said one mem
ber, and a long arm on the latch having a bent 30
extremity for engaging the latch-supporting
member when the latch is in locked position.
2. A pair of rotatably ccnnectable members,
one of said members being a latch-supporting
member and the other an .engaged member hav- 35
ing a curved serrated face, spaced lugs on the
latch-supporting member, a pin passing through
the lugs and offset with respect to the engaged
member, a latch disposed between the lugs and
tioned below the adjacent portion of the mem-
mounted on the pin, a short arm on the latch 4“
her-6, its ends are accommodated in atransverse1y disposed groove l3 in the member 5.
The short arm I4 of the latch is formed with a
having a curved serrated face for engaging the
complementary face of the engaged member, and
a long actuating arm on the latch.
relation between the connected members, a latch
carried externally by one member, in this instance the member 5, is arranged to have a locking engagement with the other member. The
0° latch has its hub 9 positioned between apertured
lugs l?-—|0 and extended through an opening
II in the member 5. It is mounted on a pin l2
~
The offset position of the pin l2 with respect _
to the serrated faces 15 and It; produces a cam- '0
ming action of the latch so that it will be neces
sary to apply force to the latch to move it out of
curved serrated face l5 adapted to engage a com-
plementary curved serrated end face IS on the
member 6, which face is generally in a plane
_
‘
WILLIAM R. BLUEHDORN.
FORREST K. HOWARD.
4”
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