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Патент USA US2116949

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May 10', 1938s
A, T_ LONG
BAG LATCH
Filed May 25, 1937
2,116,949
2,116,949
Patented May 10, 1938
UNITED STATES PATENT OFFlCE
2,116,949
BAG LATCH
Allen T. Long, Petersburg, Va.
Application May 25, 1937, Serial N0. 144,744
6 Claims. (Cl. 292—228)
The end wall l3 of base Ill has an inwardly ex
This invention relates to bag latches such as
tending lug. l8 struck out therefrom. Adjacent
are used on the frames of Gladstone bags or
the outer end of opening H, the wall H. has an
upwardly. offset or raised portion 19. The adja
cent end portion’or extension l'la of the open
bags and satchels of like character adjacent the
ends of the bag frame for the purpose of ‘hold
ing the ends of the frame closed together.
Such latches usually embody a base attached
to the outer frame member, a hasp- hinged to the
base and carrying a downwardly extending tongue
passing through an aperture in the base, and
no a spring yieldingly holding the hasp either in
its closed or opened position.
This present application is a continuation in
part of my application for patent, Ser. No.
ing‘l'l extends through this inclined portion l9
so as to provide two inclined lateral flanges 20
on each side of the extension l‘la of opening H.
The offset portion i9 is laterally rounded.
Hasp 2| is transversely rounded and approxi 10
mately rectangular in plan. The inner end of
the hasp is transversely rounded and beveled
at 22.
Forming part of this hasp by being attached
126,927, ?led February 20, 1937, and. the general
15 object of the present invention is to so improve
upon structures of this character as to consider
ably reduce the cost of manufacture and the
cost of assembly and improve the looks of such
bag latches.
A further object is to provide a latch, the outer
O surface of which has a smooth and unbroken
contour when the latch is closed and in which
provision is made to prevent the hard, highly
tempered leaf spring of the latch from cutting
out or wearing away that portion of the hasp
a with which it is engaged.
My invention is illustrated in the accompany
ing drawing wherein:
Fig. 1 is a longitudinal section through a bag
latch constructed inaccordance with my inven
:30 tion and showing the latch closed.
‘ Fig. 2 is a like view to Fig. 1 but showing the
latch open.
Fig. 3 is an underside plan view of the struc
ture shown in Fig. 1.
:35
Fig. 4 is a top plan view of the base of the
4. 40
latch, the hasp being removed.
Fig. 5 is an underside plan view of the hasp.
In these ?gures, l0 designates the base which
is made of stamped sheet metal, is hollow and,
therefore, formed with an outer web or wall I.l,
side walls I2 and an end wall I3. Of course,
these walls merge into each other. The outer
‘end of the web I I is curved downward and longi
45 tudinally to form the other end wall H of the
base. Both ends of the base are provided with
tongues or lugs 15 whereby as usual, the base may
be connected to the bag frame by inserting these
lugs through apertures in the bag frame and
then bending the lugs inward against the inside
face of the bag frame.
‘
Web II is formed with a longitudinally ex
tending slot l6 which opens into a relatively
wide aperture or enlargement I‘! of slot I6 ter
v55 minating in a relatively narrower extension H“.
‘a,
thereto is a transversely rounded plate 24 which
is disposed between the side edges of the hasp
and held in place in any suitable manner as,
for instance, by the rivets 23. A tongue 25 is
brazed, welded or otherwise attached to this
plate. This plate 24 at its inner end is cut out
to form a relatively narrow tang 26 disposed be
tween the lateral walls of the extension I’!a of
opening I‘! and the end of this tang is formed
with laterally projecting stops 21. Inasmuch as
the tang is inserted within the extension I‘!21 25
and ?ts snugly therein, the tang cannot move
laterally nor can the hasp move laterally.
The
middle of the plate ‘has a downwardly depressed
‘curved lug 28 struck out of the plate and ex
tending rearward beneath the rear portion of the
tang. Disposed with one end in the space be
tween the lug l8 and the wall II is a highly
tempered steel leaf spring 29. The other end of
this spring is curved upon itself to form a bead
30 on the underside of the spring. This bead is
disposed within the curved lug 28, which extends
beneath the bead and holds it ?rmly in place.
The spring is longitudinally slotted at 31 so that
the tongue 25 may pass through this slot. As
the hasp 21 is raised from the position shown in
Fig. 1 to the position shown in Fig. 2, the beaded
end of the spring is forced rearward and at the
same time de?ected upward, the spring is longi
tudinally compressed and acts to resist in this
position any depression of the hasp. When the
hasp is lowered against the base, the spring 29 is
partially relaxed but yieldingly resists any up
ward movement of the hasp. Thus this spring
‘in either of its positions resists movement of the
hasp, but when the hasp has been pushed very
slightly downward, the spring will urge the hasp
to its closed position. Inasmuch as the spring
has a width equal to the width of the opening
[1, the spring cannot move laterally and at all
times urges thehaspv into abutting pivoted en- ‘.55
2.
2,116,949
gagement with the upwardly inclined portion of
web l i, so that the end 22 of the hasp has rock
ing engagement at all times with the raised por
tion of the base.
While I have shown the hasp 2| as having at
tached thereto the separate plate 24, it is to be
understood that the plate constitutes part of the
hasp after the plate is attached to the hasp.
It will be noted that when the hasp is closed,
its outer face is ?ush with the offset portion l9
and the rear edge of the hasp abuts against the
inclined edge face of the offset portion and the
position of the spring, as shown in Fig. 1, pre
vents any rearward movement of the hasp away
15 from said oifset portion and relative to the base.
When the hasp is raised, the end 22 fulcrums
against the beveled portion 20. The spring 29,
under these circumstances, acts to- force the hasp
upward as soon as the hasp has passed a neutral
20 position.
A very slight downward movement of‘
the hasp, however, will bring the spring beyond
its neutral position and the spring will snap the
hasp to its closed position. The engagement of
the beaded end of spring 29 with the curved lug
28 prevents any outward detaching movement
of the hasp and even if the hasp can be longi
tudinally moved against the action of the spring,
yet detachment of the hasp from the base is
prevented by the laterally projecting stops 2].
This latch mechanism may be readily assem
bled by inserting the stop-carrying end of plate
24 attached to the hasp through the opening 11
and then turning the plate 24 so that its stops
are disposed transversely across the ‘base and be
hind the inclined ?anges 20. When this has
been done, the tongue 25 is disposed through the
slot in the spring 29; one end of the spring 29
is engaged beneath the lug IS; the spring .is
40
flexed and the beaded end of the spring is en
gaged beneath the curved lug 28. Once the
spring is in place, all parts are held ?rmly in
position against any relative movement except
the movement of opening or closing the hasp 2! .
The plate 24 may be readily stamped out of sheet
metal and readily attached. to the underface of
the hasp either by riveting or by other means
well known in the art.
This construction does away with the necessity
of forming an eye on plate 24 to engage around
a pivot pin, which is an expensiveoperation, or
forming trunnions on the end of the hasp to
engage in offset bearings formed in the base
plate, which is a construction often found in
bag latches on the market. There is no necessity
of riveting the spring to the inner face of
the base plate as is commonly done so as to per
mit the free end of the spring to be engaged by
a lug on the pivotal end of the hasp whereby to
?ex the spring as the hasp is opened or closed.
This last named construction is relatively ex
pensive to make and the spring does not exert
enough tension, because it extends parallel with
the base plate, to hold the hasp closed against
accidental opening movement.
(i5
The bead at the end of the spring 29 in my
construction is an important feature of my latch
inasmuch as this bead prevents the cutting off
of the lug 28 by the continued ?exing of the
spring and the continued pressure of the sharp
end edge of the highly tempered steel spring
against the lug which acts to abrade the lug
and cut it through until the lug breaks off. It
is likewise pointed out that when the hasp is
closed, there are no bearings or other portions
75 which project upward from the surface of the
latch but that the outer surface of the latch is
smooth and practically unbroken from one end
to the other when the hasp is closed.
What is claimed is:
1. A bag latch of the character described, in
cluding a base having an opening in its upper
face, a hasp having its end portion rocking
against one end wall of said opening in the base,
the hasp having a downwardly projecting tongue,
means carried by the hasp extending through
said opening and interlocking the hasp with the
base, and a downwardly bowed spring operative
1y engaged at one end with the underface of the
hasp adjacent its fulcrum and at the opposite
end operatively engaged with the base.
15
2. A bag latch of the character described, in
cluding a base having an opening in its upper
face, va hasp having an end portion rockingly
engaging against one end wall of said opening in
the base, the hasp having a downwardly pro 20.
jecting tongue, means carried by the hasp ex
tending through said opening and interlocking
the hasp with the base, the hasp extending
through said opening and having an inwardly
projectinglug adjacent its fulcrum, and a down 25
wardly bowed spring operatively engaged at one
end with the base, the ‘opposite end of the spring
having a bead engaging within said lug on the
hasp.
‘
3. ‘A bag latch of the character described, .in
cluding a base having a slot in its upper. face and
a relatively wide opening constituting a continu
ation of the slot, a hasp having one end thereof
rocking against one end wall of said opening in
the base, the hasp havinga downwardly project- .
ing tongue and having a tang extending through
said opening, interlocking the hasp with the base
the tang having a downwardly and rearwardly
curved lug, and a downwardly bowed spring en
gaged at one end with the base and at its other 40
end having a cylindrical bead disposed within
said lug and bearing thereagainst, the spring hav
ing an opening through which the hasp tongue
extends.
'
4. A bag latch, including a hollow base, the .~
upper wall of the base-extending horizontally in
one plane to a predetermined distance and then
extending upward and then longitudinally and
downward, said upper wall being formed with a
longitudinally extending slot and a relatively
wide opening beyond ‘said slot, the opening ter
minating within the raised portion of the base
whereby the lateral walls of the opening at its
junction with this raised portion are de?ned by
lateral ?anges, a hasp disposed with one end: 66
against the raised portion of the base and rock
ing thereagainst, the hasp having a tongue ex
tending downward through the slot of the base
and the hasp having a relatively narrow tang
disposed inward of the plane of the hasp and
provided at its end with laterally projecting
stops, the tang passing through the opening of
the base and the stops being disposed behind said
lateral ?anges, the tang having a downwardly
and inwardly projecting lug and the base at its
opposite end‘ having a ‘second downwardly and
inwardly projecting lug, ‘and a downwardly bowed
leaf spring having one end inserted beneath the
last named lug, the opposite end of the spring
having a cylindrical bead engaged beneath the
lug on the tang, said spring being slotted to per
‘mit the passage of the tongue.
5. A bag latch, including a hollow base, the
outer wall of which is formed with a longitudinal
ly extending slot and beyond the slot with a rel
2,116,949
3
being raised to provide two laterally disposed
6. A bag latch, including a hollow base, the
upper wall of the base extending horizontally in
one plane to a predetermined distance, then ex
?anges on each side of the end of the opening, a
hasp having rocking engagement at one end with
the adjacent end of the raised wall of the base
downward, said upper wall being formed with a
longitudinally extending slot and a relatively
atively wide longitudinally extending opening, the
upper wall of the base at one end of said opening
and having a downwardly extending tongue pass
ing through the opening of the base, one end of
the hasp being provided with a narrow tang
10 formed with laterally projecting stops and with a
downwardly extending lug, the tang extending
through the opening and the stops being disposed
tending upward and then longitudinally and
wide opening beyond said slot, the opening at
the end having a narrow extension formed with
in the raised portion of the base, a hasp disposed
with one end abutting against the raised portion
of the base and rocking thereagainst, the hasp
having a tongue extending downward through
inward of the ?anges, and a downwardly bowed
a slot in the base and the hasp having a rela
leaf spring having edge abutting engagement at
tively narrow tang disposed inward of the plane
of the hasp and passing through the extension
of said opening,.the tang having a downwardly
and inwardly projecting lug and the base at its
opposite end having a second downwardly and
inwardly projecting lug and a downwardly bowed 20
leaf spring having its ends inserted beneath said
lugs, the spring having a width equal to the width
of said opening and being slotted to permit the
one end with the lug on the tang and at its other
end engaged with the base whereby the spring
urges the end of the hasp into abutting engage
ment with the adjacent wall of the opening, the
spring being ?exed upon an opening movement
of the hasp and yieldingly holding the hasp in
open position and ?exed upon a downward move
ment and yieldingly holding the hasp in a closed
position, said spring at all times urging the piv
otal end of the hasp into abutting engagement
with the adjacent wall of the opening.
passage of the tongue.
ALLEN T. LONG.
25
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