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Патент USA US2114983

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April 19, 1938..
J, LEV|N
,
2,114,983
GROMMET SECURING MECHANISM
‘Filed Jan. 12, 1957
INVENTOR.
J0 sap/J L E |///\/
‘BY
@449
2,114,933
Patented Apr. 19, 1938
- UNITED STATES PATENT OFFICE
GROMMET SECURING MECHANISM
Joseph Levin, Lancaster, Pa., assignor to Um
brella Machinery Corp, Inc., New York, N. Y.,
a corporation of New York
Application January 12, 1937, Serial No. 120,164‘
1 Claim.
(Cl. 218—14)
My invention relates to improvements in a top
ping mechanism for use in the construction and
assembling of umbrella covers on the shanks of
the umbrellas.
In the construction of umbrella covers it is com
mon practice to form the cover of a plurality of
gores.
.o
These gores come to a common meeting
point at the center of the umbrella cover. At the
central point an opening is formed to permit the
passage of the umbrella shank. It is common
practice in the art to reinforce the umbrella cover
about this opening by means of a metallic ring or
grommet. A common method of reinforcing the
umbrella cover has been by sewing the grommet
or reinforcing ring to the umbrella cover. ‘This
process has proved to be both costly and time
consuming. Furthermore, if it became necessary
.
press member for applying the grommets to the
umbrella cover;
'
Fig. 3 is a sectional view of a grommet, shown as
it is applied to an umbrella cover about its aper—
5
ture;
Fig. 4 is a plan view of the grommet structure
shown in assembled relationship, and;
Fig. 5 is a perspective View of the ring members
comprising the grommet structure before they
have been assembled.
In Fig. 1 a pressing machine is shown having a
bed i which is adapted to receive' a die, shown
generally as 23. The bed I also supports a stand
ard 2 which has attached at one end the sleeve
member 3. As shown in Fig. 2, the sleeve mem
ber 3 slidably supports the hollow actuating rod
to repair the umbrella cover, the removal of a
4. The rod 4 has the yoke 6 at its upper end for
supporting bearing roller 'l by means of the bear
, _ damaged gore and replacement by another gore
‘ proved to be a difficult task.
' ing pins 8. The hollow portion 20 of the rod 4
houses a portion of the pressing member indicated
20
2
Applicant has overcome the objections outlined
above by the use of a special grommet construc
tion for reinforcing the central opening in the
umbrella cover. The application of this special
grommet to the umbrella cover’ is simple, requires
very little skill, and can be done in a minimum of
time. Applicant has devised a new method of
assembling the umbrella cover and this special
_ _ grommet structure.
The relationship of the parts
30' is such that should it become necessary to replace
a set screw I9. I The lower portion of the pressing
member l i is enlarged as represented by character
l3. The interior of the pressing member 13 is
hollow to receive a holding member generally in
dicated as It.
This holding member l4 has a
base portion l5 closely?tting within the hollow 30
a. damaged gore the same can be done in a few
’ space is, and a rod portion 15 which extends
seconds by clipping the grommet, removing the
through the tubular portion l2 as shown in Fig. 2.
The top of the. rod 55 has ?xedly‘ attached thereto
damaged gore, and providing a new grommet in
‘. place of the one clipped. Such a replacement
35' process requires but a few minutes of time as com
pared with prior art devices where hand stitching
was necessary to position the reinforcing grommet
in the umbrella cover.
'
Another object of my invention is the provision
of special die mechanism which enables the quick
assembly of the grommet structure in its relation
ship to the umbrella cover. The use of these dies
for attaching the grommet to the umbrella cover
is known in the art as the operation of topping.
By the use of these dies and the particular con
01
generally as ll. The pressing member H has a
narrow tubular stem l2 which extends into the
hollow housing Zil, as shown in Fig. 2. The stem
i2 is ?xedly associated with the rod 4 by means of
struction of the grommets, it is possible to facili
tate this operation of topping considerably over
the operation of the prior art.
For the purpose of illustrating my invention, an
embodiment thereof is shown in the drawing,
wherein:
Figure l is a side elevation of a press for apply
ing the grommets to the umbrella cover;
Fig. 2 is a view in sectional elevation showing
55 the relative positions of the die member and the
a nut, indicated as 22. Positioned between this
nut and the upper wall. of the rod 4 is a compres
sion spring 2!, which normally retains the hold
ing member It in a projected position as shown
in Fig. 2. In contact with the roller ‘l is an actu
ating cam 9, which when rotated by the actuating.
lever l0 lowers the rod‘i against’ the compression 40
of the spring 5.
Cooperating with the pressing member H and
the holding member I4 is a die member generally,
indicated as 23.
This die member has a lower
portion 24 to be inserted for positional engage‘
ment into the bed l of the machine. The upper
portion of the die is enlarged as shown by char
acter 25. The die is designed in the form of a
channel 28 for a purpose to be later described.
Adjacent to the channel at one extremity is a ’
seat 29, whereas at the other extremity of the
channel there is a seat 21. Extending upwardly
from the seat 21 is a guide pin 26 for cooperative
engagement with a recess I‘! in the releasing
member l4.
55
2
2,114,983
Figs. 3, 4 and 5 show my speci?c construction
of the reinforcing grommet which is used with
the umbrella construction. As shown in Fig. 5
this grommet comprises two metallic ring mem
bers 30 and 3|. The ring member 3!! has ex
tended therefrom the prongs 32. The interior
diameter of the ring member .3! is of such a
diameter that the ring may be slipped over the
prongs. When the grommet structure is in as
10 sembled relationship with respect to the umbrella
cover, the prongs 32 pierce the material of the
umbrella.
As shown in Fig. 3, said prongs are
bent beneath the lower ring 3|,so as to maintain
the lower ring 3| in clamping engagement with
15 the upper ring 35.
The material of the umbrella
cover 33 is thus clamped between the rings 36
and 3|, and is also maintained in position by the
piercing prongs 32 as shown in Fig. 3.
The operation of applying the reinforcing
art as topping. This operation is simpli?ed in
applicant’s case by a new method of assembling
the grommet with respect to the umbrella cover.
As shown in Fig. 2, the lower ring 3| of the
25 grommet structure is positioned on the seat 29
of the die 23. The upper pronged ring 3!! of the
grommet structure is then slipped over the pro
jected holding member Hi. The dimensional
relationship of the ring 38 and the holding mem
ber I4 is such that the ring 38 is frictionally held
in position as shown in Fig. 2. The conventional
umbrella cover comprising a plurality of gores
with a common central opening to receive the
shank of an umbrella, is then positioned over
35 the die 23 and the seated lower ring 3|, so that
the material of the cover 33 completely covers
the ring 3|. The operator then actuates the
lever Ill in a counter-clockwise direction and
through the medium of the actuating cam S and
The
pressing member H, the releasing element M and
the pronged ring 30, are lowered as a unit until
the holding member it engages upon the seat 21
of the die 23.
ing position with the undersurface of the lower
ring 3|. At the same time the upper ring 30 has
been completely released from the holding mem
ber l4’ due to the retraction of the member l4
into the hollow housing l8.
'
‘
My operation is exceedingly simple and rapid
and doesnot require the services of skilled oper
ators.
10
The dies employed are particularly de- '
signed for the method of assembly as disclosed,
so that the upper ring 39 might become automati
cally released when it is brought into cooperative
relation with the lower ring 3|. The processes 15
heretofore employed of attaching the grommet
structure to the umbrella cover by means of
stitching require considerably more time. 'With
20 grommets to the umbrella cover is known in the
40 roller 1 the pressing element H is lowered.
prongs 38 pierce through the intermediate mate
rial of the umbrella cover 33, engage the curved
surface 28 of the die, and are spread into engag
When this position is reached, the
45 guide ?nger 26 is completely housed within a
my construction, the repair of theumbrella cover
33 which necessitates the removal of a grommet 20
can readily be accomplished by clipping the lower
ring 3| and removing the same. The material
33 of the umbrella cover is'then slipped off of
the prongs 32 and repaired. The repaired cover
33 is then given a new reinforcing grommet mem
her by the process disclosed above.
7 '
While I have disclosed my invention in but a
single embodiment, it is apparent to those skilled
in the art that other equivalent structures might
readily be employed. The scope of my invention 30
is defined by the following claim.
‘
I claim as my invention:
In a topping mechanism for the purpose ‘set
forth, a vertically movable, suspended, spring en
closing hollow element closed at its upper end and 35
open at its lower end, a pressing member bodily
carried with said element and having an enlarged,‘
cup-shaped lower portion, a suspended, spring
controlled holding member extending through the
pressing member and being normally projected 40'
from the lower portion of the said latter member,
said holding member being formed with a stop
coacting with the pressing member for limiting
the projected movement of the holding member
relative to the pressing member, said holding 45
recess H. A subsequent downward movement of
the rod ll then causes the pressing member I i to
member having its lower end axially thereof
formed with a tapered socket, and a stationary
continue its downward movement, whereas the
element aligning with and normally spaced fromv
said members, said stationary element having its
holding member M remains relatively stationary
and becomes housed within the space l8 of the 7 top formed respectively with a tapered guide pin
pressing mernberv H. When the holding member axially thereof for passage into said tapered
is completely housed within the space IS, the socket, an inner, annular, ?at seat surrounding
pronged ring 30 is released. During this opera
the lower end of said pin, an outer, annular, ?at
seat arranged ‘below and spaced from the inner
55 tion the prongs 32 have pierced the umbrella
cover 33 which extends interiorly of the lower
seat and an annular channel arranged between
ring 3| and have been brought into direct engage
ment with the curved surface 28 of the die 23.
The surface is of such a design that the prongs
60 ,32 are spread outwardly due to the pressure exert
said seats, the side walls of said channel being
of different heights, the side wall of greater height
merging into the outer side of said inner seat, the
ed by the downwardly moving pressing element
||.
As the prongs 32 spread outwardly their ex
tremities engage beneath the lower ring 3 1. Thus
it is seen that as the upper ring 30 moves down
65 into engagement with the lower ring 3!, the
side wall of smaller height merging into the inner >
side of the outer seat, and actuatable cam means 60
engageable with the top of said hollow element
for lowering the latter and the members asso
ciated therewith relative to the stationary ele
ment.
‘
JOSEPH LEVIN.
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