US2870504A

US2870504A - Hoop iron clamping member

Info

Publication number: US2870504A
Application number: US461570A
Authority: US
Inventors: Borbe Erich
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-10-13
Filing date: 1954-10-11
Publication date: 1959-01-27
Anticipated expiration: 1976-01-27

Description

Jan. 27, 1959 E. BORBE 2,870,504

HOOP IRON CLAMPING MEMBER Filed Oct. 11, 1954 INVENTOR. .f/f/Cf/ BQRBE United states Patent HOOP IRON CLAMPING MEMBER Erich Borb, Zurich, Switneriand Application Gctober 11, 1954, Serial No. 461,570 Claims priority, application Switzerland October 13, 1953 2 Claims. ((11. 24-23) The present invention relates to a clamping member for hoop iron such as used to hold together containers of all kinds, in which connection of the ends is effected by means of an enclosing clamping member formed of sheet metal which is compressed together with the said ends and firmly connected by lateral indentations and bent projections. It has been found that the clamping member bulges upwardly when the indentation is pro duced so that an edge protruding from the face of the band is formed, which is particularly undesirable in stacking since such protrusions slide badly one on the other and cause mutual damage. These protruding edges may also cause injuries when the containers are transported.

The present invention has for its object to provide means eliminating these drawbacks. It consists in that the front and rear ends of the portion forming the upper face of the clamping member are bent inwards in such a manner that the inwardly projecting edge of the member ends engage the hoop when the said clamping member has been closed. The clamping member blanks are vpre-bent to suit the type of closing means employed.

Some embodiments of the invention are shown in the enclosed drawings, in which:

Fig. 1 shows a pre-bent clamping member blank for use in a closing means having a clamp magazine Fig. 2 shows a pro-bent clamping member blank designed to be slipped over and closed over the hoop ends by means of a simple closing tool or a pair of closing pliers;

Fig. 3 shows a clamping member blank having serrated ends;

Fig. 4 shows a clamping member blank having rounded lobes;

Figs. 5 and 6 show further shapes of the bent ends, and

Fig. 7 is a perspective view of two hoop ends con nected by a clamping member according to the present invention.

Referring now more particularly to the drawing there is disclosed a blank in Fig. 1 having flaps or end pieces 2 extending from surface 1 and inwards along the axis or line 2a. The bent'ends 2 may be punched so as to have a plain edge as shown in Fig. 1. Two lateral tongues 3 are each bent to form an angle smaller than 90 with the top surface 1 so that the blanks thus constructed can be stacked in a tool without intermediate spaces. The edges 4 of the lateral tongues 3 are advantageously rounded.

The blank 5 as shown in Fig. 2 has L-shaped tongues formed of side portions 6 and bottom portions 7 and is pre-bent so as to form an open sleeve which may be slipped over the steel hoop ends to be connected therewith by means of a simple closing device or a pair of closing pliers.

The blank according to Fig. 3 has flaps 8 having serrated edges. The flaps 8 extend from two opposite end edges of the surface 1 at acute angles with respect thereto and project therefrom a predetermined distance.

The bent end pieces of the blank shown in Fig. 4 have a plurality of rounded lobes 9 extending from surface 1 at acute angles.

The flaps 10 of the blank shown in Fig. 5 are arcuate in shape and extend from surface 1 at acute angles.

As shown in Fig. 6 the flaps 11 may be convex in the direction of the hoop.

When the blank as shown in Fig. l is closed, only the edges 26 of the flaps 2 will engage or wedge against the top steel hoop 12 at first, and the surface 1 will engage the hoop 12 only when the blank is closed.

Being pro-bent, the flaps 2 are resilient and permit the edge 26 to engage the hoop 12 tightly even if the blank opens somewhat after closing. This ensures a smooth transition from hoop 12 to the blank as clearly visible in Fig. 7, so that the drawbacks of former constructions mentioned above are obviated.

Various changes and modifications may be made without departing from the spirit and scope of the present invention and it is intended that such obvious changes and modifications be embraced by the annexed claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patents is:

1. A closure member for a hoop iron, said closure member being adapted to be arranged in a stack and comprising a punched and pro-bent sheet metal body provided with a fiat and smooth top surface for application to a hoop iron, a pair of flaps extending from two opposite end edges of said surface at acute angles with respect thereto and projecting therefrom a predetermined distance for resiliently engaging a hoop iron, and tongues extending transversely to said flaps and from said top surface, said tongues having opposite portions laterally extending beyond said surface at acute angles thereto, said tongues being adapted to be tucked around said hoop irons below said top surface whereby said flaps provide a substantially smooth transition between said top surface and a hoop iron.

2. A closure member for a hoop iron, said closure member being adapted to be arranged in a stack and comprising a punched and pre-bent sheet metal body provided with a flat and smooth top surface for application to a hoop iron, a pair of flaps extending from two opposite end edges of said surface at acute angles with respect thereto and projecting therefrom a predetermined distance for resiliently engaging a hoop iron, and tongues extending transversely to said flaps and from said top surface, said tongues having opposite portions laterally extending beyond said surface at acute angles thereto, said tongues being adapted to be tucked around said hoop irons below said top surface whereby said flaps provide a substantially smooth transition between said top surface and a hoop iron, said flaps being convex in shape with edges thereof remote from said top surface being the portions of said flaps engageable with a hoop 1ron.

References Cited in the file of this patent UNITED STATES PATENTS 151,483 Flickinger June 2, 1874 1,031,188 Law July 2, 1912 1,260,016 Norton Mar. 19, 1918 2,084,063 Rebichon et a1 June 17, 1937 FOREIGN PATENTS 33,024 Netherlands June 15, 1934 Patented Jan. 27, 1959;;