US1748355A - Snap fastener - Google Patents

Description

Feb. 25, 1930. G. w. LANE 1;74s,355

SNAP FASTENER Filed June 217.vv 1928 J faxye MI J ZZZQ.

1 y ATTORNEYS.

Patented Feb. 25, 1930 I UN T STATES PATENT OFFICE.

GEORGE LANE, OF I PROVI DENCE, RHODE ISLAND, ASSIGNOR T B-AU FASTENER l COMPANY, OF. IROVIDENGE, RHODE' ISLAND, A CORPORATION OF RHODE ISLAND SNAP FASTENER Application filed June 27,

- Thisinvention relates toan improved'construction of snap fastener; and has for its object toprovide a socket-engaging stud mem- "ber and a stud-receiving socket member, the

.having a continuous or unbroken surface, the engaging surface of one ofsaid members being ofa shapevin cross section different froin' 'that of the other of said members.

A further object of the invention is the provision of a socket member for a snap fastener having a stud-receiving, opening with an inwardly-turned edge wall portion, said 'wall' portion having a continuous or unbroken stud-engaging surface and provided with spacedstud-engaging members or wall portions extending inwardly or being of less distance from'the center of the opening than the other wall portions of the opening.

WVith these and other objects in view, the

invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 shows a blank as out from sheet stock from which the socket member is formed.

Fig. 2 shows the blank as drawn up into cup shape, with an opening thru its top plate Fig. 3 is a top view showing an'opening thru the top plate. Y

' Fig. 4 is a top new showing the opening I thru the top plate as formed'generally circular in contour, the circle having flattened portions or chords providing inwardly-extending stud-engaging portions. 7

Fig. 5 is a perspective view showing the plunger or punch with generally circular contour and having flattened sides for forming a similarly shaped and stud-receiving opening inthe socket member.

Fig. 6 is a section on line 66 of F g. 5. Fig. 7 is a sectional elevation showing the margin of the opening-of the socket as turned.

inwardly with flattened surfaces produced b-yaction of the plunger.

*Fi'g."- 8 is an elevation showing one form f of stud memberof the fastener with a cir- 'cular engaging surface.

fastener portions of bothof said members 1928. Serial No. 288,633.

Fig. 9 is a section on line 9-9 of Fig. ,7 and showing the circular stud in engagement with the socketimember.

Fig. 10 shows the socket member witha circular opening.

Fig. 11 shows a stud member with an engaging surface having spaced flattenedportions.

V Fig. 12 is a top view showing thestud having its engaging surface flattened at spacedpoints around its periphery.

It is found" in the practical construction and operation of snap fasteners particularly fasteners of the heavier type such for instance as those used on curtains, carpets and'other heavy materials, of advantage toform the fastener with a very strong grip; also to provide a fastener in which the socket member is formed of one piece to reduce the cost of .COIlStILlCtlOIl and at the same time provide a fastener which is strong and durable; and toaccomplish this in a simple and" effective way, I have formed a socket member plate with a stud-receiving opening, theedge of the opening being turned inwardly and the en-- gaging .portion providing a continuous. or unbroken surface, that is this engaging surface is not split to form spring fingers as is usual 'inthe formation of such sockets and during the turning in of, this edge portion I flatten the stock. The turning in of this edge portion maybe accomplished by the use of a punch or plunger having flattened sides thereby forming spaced flattened surfaces in the walls of the socket which form inwardly-extendi'ng stud-engaging portions and in I some other cases instead of forming flattened sides in the socket opening I may form the socketmemb'er with a circular opening and form the flattened-sides on the stud mem-;

her, as illustrated in Figs. 11 and 12, in both broken surface and is not splitto form springengaging fingers; and the following is a de tailed, description of the present embodiment of my invention and showing the preferred means by which these advantageous results may be accomplished. r

With reference to the drawings, 10 desig-- nates the blank of the socket member which may be formed of sheet material and with peripheral fastening prongs 11. This blank is then drawn up into thimble or socket shape, as illustrated in Fig. 2,'and the center portion of the top plate is punched out leaving a hole 12, the prongs being turned inwardly to pierce the fabric to which the socket is to be fastened.

In order to form this stud-receiving hole with the required flattened sides 13, I employ a punch and die, the punch being formed as best illustrated in Fig. 5, having a generally circular shank 14 with flattened sides 15 arranged in spaced relation about its surface. This punch is then forced thru the opening 12 which serves to turn inwardly the edge 16 of this opening into the shape best illustrated in Fig. 7 and at the same time the y flattened portions 15 of the'punch form'correspondingly flattened portions or chords 17 engages these flattened chords in. the socket member and when a circular stud 18 is caused to be forced into the socket member the stud engages these flattened chords in the socket and has a tendency to force these chords outwardly into circular form while snapping past thesame, whereby these chords will engage the undercut neck portion 19 of the stud under the head,'as best illustrated in Fig. 9 to releasably retain the. stud in its socket.

In other instances, instead of forming the flattened spaced portions on the walls of the socket opening, I may form a socket member 20 with'a circular stud-receiving opening 21, as best illustrated in Fig. '10, and in this "case I form a'stud member 22 with spaced V two members together.

flattened portions 23 formed about its engaging surface, whereby the extending arcuate portions 24.- being of a diameter slightly cooperating socket opening, these arcuate portions upon being forced into the socket the socket may be distorted to permit the entrance of the stock to detachably secure'the I have hereinshown and described the stud and the socket or either one of them as havr ing a generally circular engaging surfacewith flattened portions, but one of these 'en- 1 tion of the whole surface of the socket opening may be engaged.

I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible,

the invention being defined and limited only i engaging stud member and a stud receiving socket member, the fastening portion of one of sald members being circular in outline,

and the cooperating fastening portion'of the other of said members being substantially circular in outline with spaced recesses, the fastening portions of both members having a continuous, unbroken surface, the members engaging and disengaging each other by direct snapping I action upon direct axial movement with respect to each other.

I 2. A snap fastener comprising a socket engaging stud member and a stud receiving socket member, thefastening portion ofthe stud member being circular in outline, and the cooperating fastening portion of V the socket member being substantially circular in outline with spaced recesses, the fastening portions of both members having a continuous, unbroken surface, the members engaging and disengaging each other by direct V snapping action upon direct axial movement with respect to each other. i

' In testimony whereof I aflix my signature.

' GEORGE W. LANE.

greater than the circular opening 21 in the My improved snap fastener is very simple l and practical in construction and the socket in this ease'is formed of one piece of metal and. therefore, may be constructed with the minimum cost of manufacture.

1 The foregoing description is directed'sole- 65" 1y towards the constructionillustrated, but

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