US1101112A - Elastic connecting device. - Google Patents

Description

M. ALBERTZ. [ELASTIC CONNECTING DEVIGB. APPLICATION FILED AUG.24, 1911.

1,101,1 12, Patented June 23,191

Fig.2.

h z'g'izaszses: i Zwemivr I fil'oriwy MATHIAS ALBERTZ, F COLOGNE, GER-MANY.

ELASTIC CONNECTING DEVICE.

Specification of Letters Patent. Application filed August 24, 1911.

Patented June 23, 1914.

Serial No. 645,763.

To all whom it may concern Be it known that I, Martins ALBnR'rz, a subject of the German Emperor, residing at Cologne-on-the-Rhine, Germany, 28 Muhlenbach, have invented new and useful Improvements in Elastic Connecting Devices, of which the following is a specification.

The present invention has for its object to dispense with the use of rubber in the manufacture or braces and similar articles which are intended to exert an elastic action, as the rubber used in these articles is expensive and is rapidly worn out.

According to the present invention the elastic efi'ect is attained solely by the use of an elastic link or buckle consisting of two metal members by preference in the "form of wire hoops which are provided with oblique shanks guided one on the other for instance by means of guide pins ar-' ranged on the shanks of one hoop and engaging with slots in the shanks of the other hoop, in such manner that on the two resilient members being drawn apart the shanks of one member are compressed and those of the other member are spread apart whereby one member exerts an elastic pressure on the other in such manner that when the two members are freed they immediately return to their initial position.

One form of the invention is illustrated by way ot' example in the accompanying drawing in which:

Figures 1 and 2 show the elastic buckle in retracted posit-ion in front view and lateral 1 view respectively. Fig. 3 shows the buckle in its expanded position and Fig. l shows the expanded buckle in perspective view. 1

The two members or hoops a. Z) are made i of steel wire and their obliquely shapedl shanks 0 (I may be hardened so that they? may retain their resilient action as long as possible. In the construction shown the two shanks o oi the lower hoop are of the diverging type whereas the two shanks (Z of the upper hoop converge in such manner that the shanks of the upper hoop are parallel with those of the lower (Z of the upper hoop moreover are grooved or hollowed out so as to present an arc shaped or semi-circular cross section and in l the grooves thus formed the shanks 0 of the lower hoop are guided. In order to prel vent the two members from falling apart the shanks (Z of the upper member are provided with longitudinal slots 6 adapted to l hoop. The shanks receive guide pins f arranged on the shanks c or the lower member. The guide pins f may be provided with small nuts or other means by which members is efliciently counter-acted.

It will be seen that when the two straps g I: of the braces or the like are drawn apart as shown in Figs. 3 and 4-, the shanks of the two members or hoops are caused to glide one on the other whereby the shanks 0 of the lower hoop are yieldingly compressed and the shanks (Z of the upper hoop are drawn apart. This double resilient action causes the two elastic members when released to always automatically return into the position shown in Fig. 1 thus forming an elastic intermediate member between the two straps g h whereby the necessity of makthe straps g h elastic by the insertion of rubber threads as has been hitherto necessary for instance in the case of braces is dispensed with. The extent to which the two hoops may be drawn apartin an elastic manner is relatively great so that in using braces of this kind the elastic action is very efiicient. Where the wire members are made of ha dened steel wire the resiliency of the buckle is well maintained and braces of this kind can be Worn for a considerable length of time without any substantial slacking of their elasticity. In order to still further increase the elasticity of braces of this kind several buckles or intermediate members of this kind may be used in connection with a single strap. These wire buckles may moreover be rendered indifferent to rust by nickeling or silver plating so that their elasticity cannot be affected by perspiration or other causes whereas rubber as is well-known iniuriously aitected by the contact with the body of the wearer. Moreover as the price of such wire buckles is exceedingly small it will be seen that by dispensing with rubber which is expensive the cost of such articles may be considerably reduced.

The elastic wire buckles according to this invention may be used in belts or other articles which are intended to exert an elastic action such as for instance in waist belts, bandages, shoe buckles, garters, closing hooks tor garments and the like and according to the manner and the object in which they are to be used they can easily be produced in any desired size and of any suitable material.

Having now particularly described and the separation of the two ascertained the nature of my said invention l and in what manner the same is to be performed, I declare that what I claim is 1. In an elastic connecting device, in combination, a resilient wire member provided with resilient converging arms and a second resilient wire member provided with resilient diverging arms, said diverging arms being parallel with said converging arms and being slidingly connected therewith.

2. In an elastic connecting device, in combination, a resilient wire member provided with resilient converging arms and a second resilient wire member provided with resilient diverging arms, each of the arms of one of said members being provided with a slot and each of the arms of the other member being provided with means engaging said slots, whereby said arms are slidlngly connected to one another.

Copies In an elastic connecting device, in com'- bination, a member comprising a central portion and converging arms extending from the ends thereof, said arms being resiliently connected to said central portion, and a second member comprising a central portion and diverging arms extending from the ends thereof, said arms being resiliently connected to said central portion, said diverging arms being parallel to said converging arms and being slidingly connected thereto.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MATHIAS ALBERTZ, lVitnesses OSCAR DEPNER, Tnnonon MERKENIoH.

of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, I Washington,

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