US2001213A - Finding for a clasp - Google Patents

Description

May 14, 1935.

C. PEARSON FINDING FOR A CLASP Filed Feb. 11, 1933 15 INVENTOR. 17 @0// ea/ s 0/2 A TTORNEYS.

Patented May 14, 1935 UNITED FINDING FOR A cLAsP Carl Pearson, Pawtucket, It. I., assignor to J. & L. Tool Company, Attleboro, Mass, a firm composed of Emil L. Johnson and Olof Lundsten Application February 11, 1933,- Serial No. 656,278

. 7 Claims.

' number of parts that assembling operations may be simplified.

Another object of the invention is the provision of a construction having a resilient opening action or closing action depending upon the position of the relatively movable parts, which resilient action will not be damaged by excessive opening of the parts as may occur in other similar clasp's.

Another object of the invention is the-limiting of the "flexing of the spring such that the spring cannot be moved excessively to set the same at the bend and destroy the resilient action for which it is set. p 'Another object of the invention is the provision of a spring which may be easily reset to increase the tension if desired.

With these and other objects in view, the in vention consists of certain novel features of construction, as will be more fully described, and particularlypointed out in the appended claims. In the accompanying drawing:

a Fig. l is a perspective View of the device'and i1- lustrating by dotted lines the position of an ornament with relation thereto.

" Fig. 2'is a perspective view of the back jaw.

Fig. 3 isa perspective view of the mounting "member whichis pivotally secured to the back Jaw.

Fig. 4-is a perspective view of; the mounting member looking at the same from the opposite direction from that shown in Fig. 3.

Fig. 5 isa sectional view showing the back jaw partly opened and the spring as being limited in its flexing movement.

Fig. 6 is a perspective view showing the mounting member as attached to an ornament and the back jaw as being positioned in place after .such soldering has taken place.

Fig. 7 is a section view of the members in assembled position.

It is usual to sell to an ornament maker a socalled finding for a clasp for securing the finding to the ornament, the assembly being then sold as a dress clip for mounting upon dresses, hats or for other ornamental purposes. Findings of this character are frequently sold unassembled that the ornament mounting member may be secured to an ornament and the back jaw then assembled with the mounting member. Many clips utilize a separate spring positioned between the mountingmember and the back jaw-which requires the assembly of two parts after the mountingmember is soldered to the ornament,

and to simplify this assembly'l have caused the spring to be formed as an integral part of the mounting member. Frequently, also after the parts are assembledaflexing movement offthe jaw to a position wider openthan is-intended will strain the "spring-and prevent its properoperation after such straining, and'by reason of its location the spring cannot be resetif stronger tension is desired, and I have avoided these undesirable features by folding over afspring to lie between the mounting member and the jaw member so that the spring will be limited in its movement and cannn'ot be flexed beyond a'certain desired position; also by reason'of my arrangement of the spring; the end portion of the'spring is accessiblefor changing the shape of'the bend thereof to adjust its tension, and the following is a more detailed description of the present'embodiment of this invention illustrating the'preferred means by which these advantageous results may be accomplished.

With reference to the drawing, l0 designates the back j'aw which is provided withfprongs 'H adjacent one end forming a work engaging. portion at the front end which cooperates with the back of the ornament or other deviceto-whic h the jaw is attached to grip a piece of fabric'or the like between it and the" ornament. 'At the opposite or rearend of the jaw'I providelaterally extending trunnions l 2 and a flange 13 extending at anangle to the plane of the general extent of the jaw l0 for engagement with the spring on the rear side of the pivot as will be more fully explained. i

The mounting member I4 is provided with a surface l5 for soldering to an ornament l 6. Ears ll are bent up from the portion l5 of the mounting member to pivotally receive in their openings it? the trunnions 12 of the back jaw. The stock forming the surface I5 is extended forwardly and folded as at l9 to provide a tongue 20 extending between the ears I! and providing a resilient spring portion with which the flange l3 and the jaw member engages on the opposite side of the pivot I2 from the fold IS. The point of engagement is such that there is a tendency to swing the ornament and work-engaging surface of the back jaw together to firmly grip and clamp a piece of fabric or the like between them.

By reason of the tongue 20 being folded over beneath the work-engaging surface of the mount-- ing member and being of a certain predetermined flexing of the tongue to such an extent that it cannot be strained by reason of excessive flexing or movement of the parts about their pivot, but will limit this undesirable flexing as shown in Fig. 5. Also by reason of the fold,opening rearwardly and theaccessibility of the end portion 2| of the tongue, a blunt edged instrument may be inserted and the fold I9 sprung open to in is desired.

When the mounting member and jaw are sold separate the ears l'l of the mounting member will be spread apart as illustrated in Fig. 6 so that when'the mounting member, as, shown in Fig. 6,

is soldered to the ornament the trunnions of I the back jaw may be inserted first one in one ear, and then the other in the other ear or in line with the opening-l8 of the other ear after which these ears are folded toward each other to receive the trunnions l2 and cause the members to assume the pivotal relation desired,

, The foregoing. descriptiongis directed solely towards the construction illustrated, butI. desire it to be understood that} reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the termsof the appended claims. r p J I claim: j 5

.'-1.,A device of the character described comprising. a pair of members, means for pivotally securing said members togethenla resilient tongue .folded from. one member ,toextend between said member and engage the other" member on the opposite side of the pivot from,saidv fold and nearer, the tongue carrying member than the pivot when in working position to tend to swing said members about said pivot inonedirection.

- 2. A for a clasp comprising a jaw member, anernament. mounting member, means-,for pivotally securing said members together, a resilient tongue folded from one member to extend between said.- members, and aflange-on .the other member engaging said tongue on the opposite side of the pivot from said fold and nearer the mounting; member; than said pivot .when in working position and serving to tend to swing said mem-' bers about said pivot in one direction. j 3. A- finding; for a clasp comprising a jaw member, an ornamentv mounting member, means for pivotally securing said members together, a resilienttongue folded from saidmounting member to extend-between said members, and a flange on the jaw member engaging said tongue on the opposite side of the pivot from said fold and nearer the mounting member than said pivot when in working position and serving to tend to swing said members about said pivot in one di- .rection.

, and between said members to provide a resilient crease the tension on the spring when such actionsaid pivot to move the members about said pivot in one direction.

5; Aefinding for a clasp comprising a jaw member having a work-engaging portion extending inwardly from one end, trunnions extending laterally at the other end, a mountingmember'of a. length incapable itself of serving as a jaw and-for attachment to an ornament or the like, ears on said .mountinghmember pivotally receiving said trunnions, a tongue integral with said mounting 25 member and folded therefrom andextending. be,-

tween said members and engaging saidjaw member on the opposite sideof the pivot from said .fold when-in working position to tend to swing said v member about said pivot in one direction.

6. A finding for a clasp comprising a jaw member having awork-engaging portion-extending inwardly from one end, trunnions extending later ally at the other end,,a mounting member-of a length incapable itself of serving asajaw for attachment to an; ornament or the-like, ears on said mounting member pivotally receiving said trumiions, a tongue integral with said mounting member. and folded therefrom and extending between said members, a flange on: said jaw member E- folded therefrom to engagesaid tongue; on the opposite side of the pivotfrom said fold when in working position: whereby'the membersv are urged in one direction about said pivot. I

7. A finding for aclasp comprising a aw member, an ornament mounting member, meansfor pivotally securing said; members together, a resilient tongue folded from onemember to extend between said members, and aflangeon the other member engaging-said tongue and serving. to):

swing said members about said pivot in one direc-; tion, the tongue being of a length to cause its-free end to engage said mounting member to limit its flexing movement under pressure of'said flange when the jaw is being opened;

CARL .PEARSON.

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