US2107878A - Safety buckle - Google Patents

Description

Feb. 8, 1938. STRAUSS 2,107,878 I SAFETY BUCKLE Filed March 17, 1957 My Ame Y Patented Feb. s, 1938 2,107,878

2,107,878 SAFETY BUCKLE Siegmund Strauss, Vienna, Austria Application March 17, 1937,. Serial No. 131,278 I In Austria April 4, 1935 I 7 Claims (01. 24-178) My invention relates to buckles for straps and strip 6' to 'pass it with clearance whereby said belts and has for its object; to provide a, buckle strip is slidableyin longitudinal direction and also which automatically releases the end. of the swingable to. some extent. The .end of the strip strap, when the pull exerted. upon said strap 6' is rolled up to 'form an eye accommodating jex'ceeds acertainpredetermined-value. the pin '9 of a 'bail Hi. The latter serves to jMy safety-buckle may be used-in bindings for attach the .fixed end of the strap (not shown) skisJ-or' for other purposes "where it is desired in the usual manner,.for instance on the roller that the strap connection is automatically rell. 'I'he'bail Illhas two cams H, the purpose leased if excessive force, is exerted upon the same. otwhich will be described later. The other end Thus, for instance, inlskiing, bone-fractures or of the metal 'strip 6' forms the tongue 4 .of the 0 other. casualties anddamages to the ski-binding buckle; A slotted plate l5 rides on the strip 6 and may be'avoided. bears upon shoulders orextensions-S of the strip With these objects in view, I provide in ,my 6. A strong pressure spring 8 is arranged besafety buckle two holding elements for the per-- tween the plates 3 and I5 which'spring may forated'strape. garest and a tongue adapted have :an initial tension. in the normal position to pass through the perforations of the strap and of the buckle.

' normally overlying said rest. The two holding The perforated end l4 of the strap is buckled elements are movable against each other relain the usual manner, as shown in Fig. 2. If a "tive to the resilient force of a spring or the pull is exerted upon the strap, the frame I, 2, 3

like whereby the tongue is disengaged from said moves together with the end l4 relatively to the 20 rest and the strap is released, if the pull exerted other part, as shown in Fig. 3. During this upon the strap exceeds a certain predetermined movement, the spring 8 is compressed. If the value. 7 v V pull exceeds a maximum, which may be pre- My invention also aims at resetting means determined at will by choosing a spring of ap- -35 in a safety buckle of this kind, which enable the propriate strength and by varying the distance user to easily refasten the'strap in the buckle. a. in Fig. 1, i. e. the overlapping between the rest 'My invention further aims at providing a 2 and the tongue 4, the tongue 4 slides oiT the safety-buckle of this kind which may be manurest 2, releases the end of the strap l4 and factured at low expense and which may be easily assumes a position on the opposite side of the assembled .and disassembled to interchange the rest 2, as shown in Fig. 4. 30

; spring and other parts of it. In order to be able to fasten the end of the Other features of my invention will appear strap I4 again, it is necessary to reset the tongue ffrom the following detailed description with refto its normal position shown in Fig. 1. This erence to the accompanying drawing, in which would be very diflicult against the action of Fig.1 is a plan View or" an embodimentof the strong spring 8, because this spring has to be 35 safety buckle according to the invention in its compressed to reset the tongue. The cams I 2 normal position, serve to compress this spring without undue I Fig. 2 is a side elevation of the buckle, also in efiort by cam action, if the bail I0 is rotated itsnormal position, I 0 for about 90 with respect to the frame I, 2, 3,

4: Fig. 3 is aside elevation of the buckle in the as shown in Fig. 5. 40 position which it attains if the strap buckled In themodification shown'in Fig. 6 the plate into it is subjected to a heavy pull, I5 is secured to the tongue by means of a pin Fig. 4 shows the buckle in the same position l3, which is held in a hole in the strip 6 under as Fig. 3 after the strap has been released, the action of the compressed spring 8. The pin :5 Fig. 5 shows in a side elevation the manner l3 may be removed and the buckle may be dis- Q in which the tongue is restored to normal pomounted, for instance in order to interchange i I the spring 8 and. thereby adjust the force of Fig; 6 represents in a planvicw a modification the pull necessary to release the safety buckle. of the safety buckle with interchangeable spring. w I claim The frame of the buckle is formed, as shown 1. A buckle comprising a frame, a rest forming 50 by Figsto 6, by Side-pieces I, bridge rest part of said frame, a tongue adapted to engage 2 and a plate 3. These parts maybe punched in a strap and to bear upon said rest, said tongue one Single piece from sheet al, he Plate 3 forming part of a strip passing with clearance being formed by bending h metal at a right through a slot in a plate of said frame opposite angle. The plate 3 has a slot allowing a metal to said rest, a retaining element on said tongue, 55

resilient means arranged between said frame and said retaining element on said tongue and cam means rotatably attached to said strip outside of said frame and adapted to compress said resilient means.

2. A buckle comprising a frame, a rest forming part of said frame, a tongue adapted to engage a strap and to bear upon said rest, said tongue forming part of astrip passing with clearance through 'a slot ina plate of said frame opposite to said rest a retaining element on said tongue, resilient means arranged between said frame and said retaining element on said tongue, an eye formed on the end of said strip outside of said frame, a pin passing through andv rotatable within said eye and bearing a strap, and cams forming part of said loop and cooperating with the slotted plate of the frame to compress said resilient means.

3. A buckle comprising a frame, a rest forming part of said frame, a tongue adaptedto engage a strap and to bear uponsaid rest, said tongue "forming part of a strip passing with clearance through a slot in a plate of said frame opposite to said rest, means on said strip outside of said frame for attaching a strap, a second slotted plate riding on said strip within said frame, a removable cross pin securing said latter slotted plate to said strip, and a helical compression spring surrounding said strip and interposed between the slotted plate of said frame and said second slotted plate, said spring'having an initial tension in the normal position of the buckle.

4. A'buckle comprising, a frame, a rest integral with said frame, a tongue swingable and longitudinally displaceable in said frame, the free end of said tongue normally bearing upon said rest, a fixed retaining element on said tongue and resilient means interposed between said frame and said retaining element on said tongue to retain the latter in its normal position, said resilient means permitting withdrawal of said tongue to a position free of said rest under a pull exceeding a predetermined maximum.

5. A buckle, as claimed in claim 4, wherein said resilient means consists of a helical compression spring having an initial tension in the normal position of the buckle.

6. A buckle for connecting two strap ends, comprising, a frame, a transverse rest forming part of said frame, a tongue adapted to engage one of said, strap ends and normally bearing upon said rest, said tongue being swingable and longitudinally displaceable within said frame and having means to attach the second strap end to said tongue at a longitudinally fixed point thereof, a retaining element fixed on said tongue, and resilient means interposed between said frame and said retaining element on said tongue to retain the latter in its normal position, said resilient means permitting withdrawal of said tongue to a position free of said rest and disengagement of said first mentioned strap end, when the pull exerted on said second strap end exceeds a predetermined maximum.

7. A buckle, as claimed in claim 4, in which said tongue consists of a strip passing with clearance through an opening in a plate of said frame opposite said rest.

SIEGMUND STRAUSS.

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