Патент USA US2114983код для вставки
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.