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Патент USA US2404670

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July 23, W46..
F. M. UDALL ETAL.
2,404,670 ‘
LATCH MECHANISM
Filed Nov. 23, 1944
INVENTORS
J7‘ ark/1,01. PM
759M
B
i
TORNEY
Patented July 23, 1946
4 2,404,670 *
UNITED STATES PATENT OFFICE
2,404,670
LATCH MECHANISM
Frederick M. Udall and Paul Baumgarten,
New York, N. Y.
Application November 23, 1944, Serial No. 564,767
3 Claims.
(Cl. 292—172)
1
2
This invention relates particularly to a sur
face type or What is commonly called a cabinet
lock.
One object is to provide a device in which the
23 meshing with holes 24 which constitute a gear
rack in the sliding latch bolt.
The pivot shaft 22 is supported between the
posts 25 which are integral with the base plate
and a groove 26 formed by embossing the cover
above the ends of the posts. The outer end of the
latch bolt is always concealed.
Another object is to provide a simple and in
expensive device.
rocker constitutes a handle of any suitable de
Another ob-J'ect is to provide a device the mech
sign for actuating the bolt. It will be noted that
anism of which may be shaped to any suitable
this form of device may be installed on either a
design so that it is at the same time ornamental 10 right hand door or a left hand door——-in other '
as well as useful.
Words it is reversible.
Fig. 1 is a plan view of one form of latch mech
The device is simple and compact and can be
anism embodying our invention.
Fig. 2 is a plan and section of the same.
Fig. 3 is a longitudinal sectional view includ
ing the strike plate.
Fig. 4 is an edge View of the base plate.
Fig. 5 is a perspective view of the latch bolt
and strike plate.
The housing is made up of a base plate Ill and
a cover ll suitably connected together. Inside
of the housing is a latch bolt I? which slides on
the base plate between the lugs l3 on the base
plate. It is also guided between the base plate
and cover by the arched portion l4 and the tail
piece I5. A curved spring I6 is held within the
cover and engages the tail piece iii of the latch
bolt to hold it resiliently against the stop lug l3’
in its latching position when its hook-like end
I‘! engages beneath the hook ill of the strike
plate or catch I9 when the door to which the
device is secured is closed. The outer face of the
hook I‘! is bevelled somewhat so as to automat
ically extend the bolt when the door (not shown)
is being closed. The strike plate also has a cam
like lug 20 to be engaged by the tip of the latch
bolt when it is extended so as to automatically
tend to force the door to open when the latch is
disengaged.
made of any suitable design. It will be noted
that the latch bolt is concealed entirely and does
15 not project from the housing at any time.
We claim:
1. Latch mechanism comprising a housing
composed of a base plate and a cover, a latch
bolt guided to slide on the base plate, said plate
20 having posts projecting therefrom, a rocker hav
ing a shaft supported between said posts and said
cover, said rocker having teeth geared to said
bolt for retracting it.
I
2. Latch mechanism comprising a housing
25 composed of a base plate and a cover, a latch bolt
guided to slide on the base plate, said plate hav
ing posts projecting therefrom, a rocker having
a shaft supported between said posts and said
cover, said rocker being geared to said bolt for
30 retracting it and a bowed spring for opposing
the action of said rocker.
3. Latch mechanism comprising a housing
composed of a base plate and a cover having a
groove, a latch bolt guided to slide on the base
35 plate, said plate having posts projecting there
from, a rocker having a shaft supported between
said posts and the groove in said cover, said
rocker being geared to said bolt for retracting it.
'
The disengagement of the latch bolt is e?‘ected 40
by a rocker 2| which is pivoted at 22 and has teeth
FREDERICK‘ M. UDALL.
PAUL BAUMGARTEN.
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