US2682989A

US2682989A - Packet

Info

Publication number: US2682989A
Application number: US137228A
Authority: US
Inventors: Jackson Donald Richard Patrick
Original assignee: Molins Machine Co Ltd
Current assignee: Molins Machine Co Ltd
Priority date: 1949-01-26
Filing date: 1950-01-06
Publication date: 1954-07-06
Anticipated expiration: 1971-07-06

Description

y 1954 D. R. P. JACKSON PACKET Filed Jan. 6. 1950 INVE/Yfdl? 3, LOW, (La, M$W

Patented July 6, 1954 don, England, assignor to Molins Machine Company Limited, London, England, 'a British company Application January 6, 1950, Serial No. 137,228

Claims priority, application Great Britain January 26, 19.49

1 Claim.

This invention concerns improvements in or relating to packets and more particularly packets of rectangular block shape such as are used for cigarettes. These packets are made by folding up a blank of paper or thin card about a former, often the article (e. g. a batch of cigarettes) to be enclosed in the packet, and securing the folded portions to one another by adhesive. A well-known type of such packet is that termed block-ended which is made by folding a rectangular blank into a U about one end and two broad sides of the former and then folding parts of the blank extending beyond said end and sides in succession on to the two narrow sides of the former. When the former constitutes part of a machine the most usual method is first to fold down those parts of the blank lying in the plane of one broad side on to narrow sides of the former to form long side folds and after that to fold down the parts extending from said end so that they lie on the aforesaid long side folds and finally to fold down the remaining parts of the blank lying in the plane of the other broadside so that thoseremaining parts form long side folds each of which overlaps one of the other long side folds and the portions folded down on top of said folds, these latter portions being usually termed tucks. The result is an open cup closely covering an end and four sides of the former. the article to be enclosed in the packet it is much easier to make the tucks first and follow them with the long side folds in succession.

The packet in either caseis neat and tight but owing to the nature of the folding operations, several thicknesses of overlapping material occur on each side face at the end where the tuck is made and in order to produce rather flatter folding it is sometimes the practice to separate the material which is to form the tuck from that which is to form the long side folds by slitting the blank from the edges for a distance equal to When the former is chines, as the edge of a long side fiap formed by one of said slits is sometimes displaced and According to the invention there is provided a blank for a block-ended packet, wherein the material to form a tuck is separated from the material to form corresponding side folds by slits extending inwards from an edge of the blank for a distance equal to the width of a side fold, said slits converging from the edge of the blank to a width equal to the thickness of the packet to be made from the blank, whereby that edge of a side fold which is nearer the block end in a packet made from the blank is at an acute angle to the endface of the packet and entirely within the area of a side of the packet.

Further according to the invention there is provided a packet made from a blank as set forth in the preceding paragraph wherein the tucks are first folded at right angles to the neighbouring end of the packet, whereafter the long side folds are folded down in succession and secured to one another and to the corresponding tucks by adhesive.

A block-ended packet according to the invention will be described by way of example with reference to the accompanying drawing in which:

Figure l is a plan of a packet blank.

Figure 2 is a perspective view of a finished packet, the example chosen being of the open cup type as used almost universally in the United States of America.

Referring to Figure 1, the blank is a rectanguv lar sheet of paper I having longitudinal crease lines 2 and transverse crease lines 3 which terminate where they meet the longitudinal crease lines and define the base of the finished packet, Figure 2. These crease lines may be real, in which case the blank is creased during feeding, or imaginary, in which case they appear only when the blank has been folded to form a packet.

The blank, has four slits 4 extending from the crease lines 2 to the neighbouring edges and diverging as shown. The material between each pair of slits 4 forms a tuck of the packet, and as shown these are of trapezoidal shape, and consequently narrow triangular portions 5 at each side of a tuck will be folded or doubled over as the side folds are made, but these portions are quite small and do not interfere with the close neat folding of the tuck and side folds. The drawing is to scale for a packet for twenty cigarettes in three rows.

From Figure 2 it will be seen that the lower edges 6 of the side folds make an acute angle with the end face of the packet and lie entirely within the area of the side of the packet.

What I claim as my invention and desire to secure by Letters Patent is:

An elongated block-ended packet of the type having side folds at each narrow side of the packet and tucks adjacent the base of the packet lying beneath the side folds, said packet being formed from a substantially rectangular blank having at each side thereof a symmetrically arranged pair of slits extending inwardly from the adjacent edge of the blank for a distance equal to the width of the corresponding side fold, each pair of slits converging inwardly and being spaced at the inner ends thereof by a distance equal to the width of the narrow side of the packet, each slit forming with the adjacent edge of the blank an angle greater than 45, the side folds lying one over the other in the folded packet, and the tuck at each side lying beneath the adjacent side folds, a triangular portion at each side of each tuck being folded back between the tuck and the adjacent side folds, whereby that edge of each side fold adjacent the packet base forms with the base an angle less than 45 and lies entirely Within the area of the packet side.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,411,510 Peterson Apr. 4, 1922 1,591,427 Leary July 6, 1926 1,882,094 Rauber et a1 Oct. 11, 1932 2,041,679 Kemp May 19, 1936