US2644710A

US2644710A - Hasp

Info

Publication number: US2644710A
Authority: US
Inventors: Luling Alfred; Luling Adalbert
Original assignee: F W LULING GmbH
Current assignee: F W Luling G M B H; F W LULING GmbH
Priority date: 1949-08-20
Filing date: 1950-08-10
Publication date: 1953-07-07
Anticipated expiration: 1970-07-07

Description

y 7, 1953 A. LULING ETAL 2,644,710

" 1 HASP 7 Filed Aug. 10, 1950' O O as g 2 2928,

Patented July 7, 195 3 HASP Alfred Liiling and Adalbert Liiling, Volmarstein an der Ruhr, Germany, assignors to F. W. Liiling G. In. b.'H., Volmarstein an der Ruhr,

Germany Application August 10,'l950, Serial No. 178,576 In Germany August 20, 1949 3 Claims; (Cl. 292-281) This invention relates to hasps and the like. a 1

In known. hasps the main part, which is hinged to the fixed part and has at its free end a slot for the insertion of a staple, forms a continuous, rigid member in one piece which is straight throughout. In consequence, the hasp can be properly applied only to fiat surfaces. It the main part of the hasp is made of wire, it is true that adaptation to curved surfaces is possible by subsequently bending the wire part to shape. Since the subsequent bending takes place by hand without the use of suitable tools, the correct curvature is, however, only seldom achieved, while undesirable deformation of the member, for example twisting, easily occurs. If the hasp is composed entirely of sheet metal, subsequent curving of the main part thereof'is not possible owing to the stifiening thereof by rolling or turning over the longitudinal edges of the metal sheet forming the part.

The present invention aims at obviating the foregoing disadvantages and to this end and in contradistinction to the prior proposals, consists in a hasp wherein the hinged or main part of the hasp is adapted to be curved perpendicularly to its surface in the manner of a flexible chain, said part being constituted at least in part by a plurality of members hinged to one another. As can easily be seen, the effect is thereby achieved that the hasp can also be tightly applied to curved surfaces, and that it can automatically adapt itself to the greater or lesser curvature of the surface against which it bears. In addition, the advantage is also achieved that by having a large number of hinge pins considerable transverse stiffening is effected, so that the hasp affords greater resistance to attempted forcible breaking open.

If the hasp consistsof sheet metal except for its hinge pins, the articulations connecting the members of the main part of the hasp, and preferably also the hinge serving to mount said part on the fixed part of. the hasp, can have double hinges. This gives great flexibility so thatthe main part of the hasp can be curved overa relatively small radius without it'being necessary to make the number of members, consisting of metal plates, excessively large. I

The double hinges. can each be formedfrom an oval ring of round steel, the strait parts of which (running perpendicularly to the longitudinal direction of the hasp) are adapted to turn in sockets formed at the ends of the metal plates. In a preferredembodiment of the invention, the double hinges can each consist of two' pins ness as the straps.

mounted in the sockets in the metal plates and connected at their ends outside the sockets by straps riveted thereto. By a simple method of manufacture great strength of the double joints, and hence great security against forcible breaking open of the hasp, can thereby be achieved. The pins and straps need merely be given suitable thickness. The straps, the thickness of which conveniently amounts to a multiple of the thick ness of the metal plates of the hasp, consist preferably of hardened steel, so that they cannotbe sawn through. Between the successive straps undetac'hably secured filling pieces can be mounted on the members of the hasp, which likewise consist of hardened steel and are ofthe same thicke pieces fit tightly against each othenthey form at each longitudinal edge of the articulated por-,

tion of the hasp a reinforcement rail of steel which, although it can be bent, is practically con- 1 tinuous, and which when itis attempted to break open the hasp by force preventsdeformation of the latter and at the same time also protects this part of the hasp from being sawn or cut through.

In the drawing the invention is illustrated in one embodiment, and in said drawings:

Fig. 1 shows the front view of a hasp in the extended position;

Fig. 2 a rear view with a section through the line'A--A of Fig. 3;

Fig. 3 is a longitudinal section through the line B-BofFig. 2;

Fig. 4 is a cross section through the line (3-0 of Fig. 2; and

Figs. 5 and Gare, respectively, a front view and section along the line D-D of Fig. 5, of a staple for use with the hasp. a

The fixed part of the hasp illustrated consists of a sheet metal plate 2 provided with holes I 'for the passage of fixing screws, and a second and somewhat larger sheet metal plate 3 whichis intended to cover said'plate 2 and is articulated thereto byahinge d. The longitudinal edges of the covering plate 3 are bent over to the rear. The longitudinal edges, and also the transverse edge facing away from the hinge, of the fixed plate canconveniently' also be bent over, but forwards. l I

The main part of the hasp is hinged to the covering plates by means of a hinge 5. Said part,

in the design according to the invention, is com posed of a plurality of members "i, 3 connected together by hinges S, so that it can be curved like a flexible chain. -In the-examp1e, the members consist of two shorter metalplates l and'a Since the straps. and filling curvature o f'the' ha'sp both the hinges a and the hinge are designed as double hinges, having each two pins firmly joined together at their .endsand adapted to turn in sockets .ll. The v sockets H, which extend perpendicularly to the Y longitudinal direction of thelhaspa'nd over the greater part of, the width ofthe lattenjr gisposed on the rear side of thehaetalplates 3,1; .8; [at the adjoining ends of the latter, and are formed by cylindrically rolled extensionsof the plates.

The two pins of each double joint consist or two separate pins 26, which are connectedtogether by two straps 21 riveted on at their stopped ends. The strapsi'l the' thickness of which amounts to amultiple of triefmicrfiess of the'she'efti'iig er the hasp members, are 'made of misera le bar steel and hardened, while each "strap may consist of two stamping's which'are pressed firmly'on to one another when the rivet heads as the pins 26 are upset. The resulting double hinges are protected at the sides by the longitudinal edges L4, bent over to the rear, of the metal pla'tes 1,.8 forming the"members of the main part of the, base and of the plate 3 of the fixed part. v

Betweenthestraps gl of the successive double hinges, filling pie'ces 2B are disposed, which have substantially the same thickness as the straps. The filling pieces 2 3 are connectedin 'r'aairs by sheet steel strips 29 lying between; the hinge sockets H and spaced apart corresponding to the spacing of the straps of the double hinges. They are at the same time formedpartly by the bent:

over ends of the strips 29, but for the most part by hardened stampings, of hardenabl e bar steel riveted thereto. Each filling piece 23 embraces the semij-cylindricalends of the straps 27 withrecesses provided on its faces-i-n the shape of cylindricahsegments, so that the filling pieces cannot fall ou t to.the rear While at the sametiine the straps'z'lu and th ez-filling pieces -28;fit into one another substantially without ;a gap. -In the lateral direet-ion the filling pieces are supported by the bent-over edges M of the metal plate 1. At the same V time they 7 are also further secured against lateral displacement by ,thefact that hollow pams 3Q ,impressed in the sheet .metal strips 29 connecting them engage ginrecesses 3! which are impressed from the rear :in the ;metal plates 1. They therefore cannot be removed even if it should be found possible to bend up the plate edgesli v ,v

The thielgstraps 21 and the filling pieces 28 of equal thickness he as tightly 'as possible. against the bent-over longitudinal edges 14 of the sheet metalplatesforming the hasps. As canbe seen,

they form two rails reinforcing the articulated emoan the hasp on its two longitudinal sides, ails onthe one hand preverit deformation part of the east and on the other hand, 'i n'c'e they are inane of'hardened steel-{make bothsawing and ci ittih g through virtually impossible.

The staple engaging in the slot 9 inithie end portion 8 of the east; eonsists, of a U-shaped s ti'i'ruij'33 of circular steel wire carried by a base;-

plate held the plate 32 by a secondsheet metal plate 3 riveted on to theformer and placed'with an oval holeiaover sage of fastening screws, so that at the same time-it acts as reinforcement for the baseplate.

Within the scope of the invention, various modifioations of the embodiment illustrated, and also bthr'jembliiriieiits aiid applications, are possible. he articulated main portion of the hasp could be made entirely or mainly of wire, a sheet metal end membe r. 8 of the embodiment illusi m ne drawing being for example conhect'd't'o the fixed part by a number of articulated ;chain members. These may each consist substantially of a U-shaped wire stirrup, the ends of the legs ofwhichare rolled in theiform of" eyes around mammals p'a v to engage in said slot ahasp"lasp foi a door;

base plate hih dlyfioni ected t e oth' f said hasp end sec ,Qohs r 'scui said ot 1 3$! cndsect'ionand phel'fibg? said hasp to I door frame mo /ably smarts plan no rn'al to thedoor; at least oneinterrne ate haspsejc n o atee betwe n S i tap eta ses il i longitudinal .direction of said has'p, the trans versaledges of said hasp sections located 1ad-j acent to ;a transverse-l edge of another hasp sec tion being inwardly rolled so that two adjacent edges constitute a pair of substantially cylindrical transversa-lly extending sockets; and a pit rality of, connecting links-,feac-h of said connect ing links including two transversely extending hinge pins and two elongated connecting plates fixedly securing the ends of said two hinge pins together, the hinge'piris of each of said links passing through 'apair of said .transversal sockets so.as'toxhirigedlycorinect said has'p sectiorisf 2. A flexible 'hasp comprising in combination, two elongated hasp end section's composed. of a front wall and two longitudinally extendingside wall portions, one of said 'hasp en'd sections formed with 'aj sl'ot andatlaptefl toehgage iii-saidslot a web das or enter; a base plate hinged 1y cohne creuiwith tue'bther bf "said new and ti'ohs "for seeming "said other hasp end section and thereby said hasp to the door frame movably' only'in (inte penetrating to thed'o'or; 'at least;

one interm' ate east "section mmposeaor a y exter'rtiing front "wall "and two dngitrra-inai sidewall portions and located Between said Hasp end seam-1's in longitudinal direction offsaid has the'itrarisve'rsal edges of "said 'hasp sec;- tions located adjacent. to a transversa'l'ed e of another haspgfsectionrbeihg i-n'w'ardly' rolled .SG that two adjacent edgesponstitute a pair of substantially cylindrical transversally extending; ocke s a. pl r l ty, o con ect n nks; a f S d.- iw ne ins r mind n tw t an v rseunstable and neag'uig with parts 3% pressed in the shape of channels over the outwardly bent each filler plate located between two connecting plates on one side of said hasp fixedly secured to the side wall portion of the hasp section located between the corresponding connecting links, said filler plates forming together with said connecting plates two flexible substantially continuous rails on either side of said hasp adjacent to and within said side Wall portions of said hasp sections.

3. A flexible hasp comprising in combination, two elongated hasp end sections composed of a front wall and two longitudinally extending side Wall portions, one of said hasp end sections formed with a slot and adapted to engage in said slot a hasp clasp of a door; a base plate hingedly connected with the other of said hasp sections for securing said other hasp end section and thereby said hasp to the door frame movably only in one plane normal to the door; at least one intermediate hasp section composed of a front wall and two longitudinally extending side wall portions and located between said hasp end sections in longitudinal direction of said hasp, the transversal edges of said hasp sections located adjacent to a transversal edge of another hasp section being inwardly rolled so that two adjacent edges constitute a pair of substantially cylindrical transversally extending sockets; a plurality of connecting links, each of said connecting links including two transversally extending hinge pins and two elongated connecting plates fixedly securing the ends of said two hinge pins together, said connecting plates hav-- ing rounded end portions, the hinge pins of each of said links passing through a pair of said transversal sockets so as to hingedly connect said hasp sections; a plurality of-flat filler plates, each filler plate located between two connecting plates on one side of said hasp engaging with two oppositely arranged recesses said rounded end portions of said connecting plates, and being fixedly secured to the side Wall portion of the hasp section located between the corresponding connecting links, said filler plates forming together with said connecting plates two flexible References Cited in the file of this patent UNITED STATES PATENTS,

Number Name Date 114,195 Ransom Apr. 25, 1871 469,126 Campbell Feb. 16, 1892 543,232 Firfield July 23, 1895 1,623,050 Frantz Apr. 5, 1927 1,712,564 Fones May 14, 1929 FOREIGN PATENTS Number Country Date 341,181 Great Britain Jan. 15, 1931