|Publication number||US2797477 A|
|Publication date||Jul 2, 1957|
|Filing date||Mar 29, 1956|
|Priority date||Mar 29, 1956|
|Publication number||US 2797477 A, US 2797477A, US-A-2797477, US2797477 A, US2797477A|
|Inventors||Erdman Albert R|
|Original Assignee||Erdman Albert R|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (9), Classifications (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
July 2, 1957 A. R. ERDMAN 2,797,477
BOX AND PACKAGE SLITTING AND OPENING TOOL Filed March 29, 1956 Albert R. Erdman INVENTOR.
United States Patent ()E .7 7.411 BOX AND PACKAGE SLI'ILTING AND OPENING Albert R. Erdman, Washington, Kans.
Application March 29, 1956, Serial No. 574,748
1 Claim. (Cl. 30-2) The present invention relates to a hand implement or tool which is characterized by a handle having a specially constructed head wherein said head is, in turn, constructed to accommodate either single or double edged safety razor blades whereby to thus provide a blade-equipped implement for slitting and otherwise opening cardboard boxes, packages and the like.
Box and package openers which use either new or discarded razor blades are, obviously, not new. As a matter of fact, the art to which the invention relates is fairly well developed and this means that there are numerous instruments and implements which are intended to be similarly used. It may be added, in this connection, that it is customary to provide handle means with a receiver and to fit the blade in the receiver so that an edge portion projects and so that it may be caused to penetrate and rip around marginal edges of top, bottom and side walls of boxes and the like so that the wall may be removed from the box thus opened. A similarly constructed and performing package opener is disclosed in the H. Disbrow patent, No. 2,247,290. This is mentioned because in applicants construction in addition to holding the blade a corner portion thereof is projectible and retractible to a variable degree to bring about, it is believed, a more satisfactory penetrating and slitting action.
An obvious object in the instant matter is to structurally, functionally and otherwise improve upon the Disbrow patent and any other similar patented or marketed implements using insertible and removable razor blades. In carrying out the instant invention a construction is provided which, it is believed, will adequately fulfill the ordinary manufacturing requirements and economies of manufacturers and will aptly serve the miscellaneous uses of those who are given to the use of bladed implements of the class under consideration.
More explicitly, novelty is predicated in the instant disclosure on a substantially solid cast head which may, of course, be of lightweight aluminum or equivalent metal or, as may often be the situation, commercial plastics of a suitable grade. The head is bifurcated and the furcations and space therebetween provide a receiving pocket which is at the desired oblique angle in respect to the lengthwise dimension of the handle and which serves as a firm and reliable receiver and holder for the projectible and retractible razor blade.
Novelty is also predicated on the construction stated wherein the edge or lip portions of the furcations are fashioned into outstanding laterally disposed flanges, the cooperating surfaces of the flanges serving as guides or guide shoes and being at approximate obtuse angles in respect to each other.
Other objects, features and advantages will become more readily apparent from the following description and the accompanying sheet of illustrative drawings.
In the drawings, wherein like numerals are employed to designate like parts throughout the views:
Figure 1 is a perspective view of a tool or implement 2,797,477 Patented July 2,v 1957 constructed in accordance with the principles ofthe invention and showing the same in readiness foruse;
Figure 2 is a view showing a cardboard carton, box or the like and illustrating one manner in which the tool is employed, the portions of the tool seen being in section and elevation;
Figure 3 is a fragmentary view which serves to bring out the angularity and construction and position of the cavity or pocket in which the blade is inserted and held;
Figure 4 is a view in end elevation illustrating how the tool may be employed to slice through an edge portion of a vertical side wall or panel of a box to loosen the same from the top of the box; and
Figure 5 is a similar view showing another position or use wherein the guide is resting on top of the box so that the protruding knife may be caused to travel through what may be the junction corner between a side wall and top of the box or other package.
Referring now to the drawings the head is denoted generally by the numeral 6 and the handle is denoted at 8. The handle is joined at one end 10 to a rounded marginal edge portion 12 of the head. In general side elevation the head appears to be partly circular; or, it may be said to be somewhat segmental in shape. In any event, the opposed faces 14 are preferably flat and the marginal edge portion is rounded. As before stated the head is bifurcated as at 16 in Fig. 1 and defines a pair of opposed furcations 18 and 20 and what is more important defines an oblique angled blade receiving and holding pocket 22. One end of the pocket provides a solid abutment wall 24 for one transverse end of the insertible and removable safety razor blade 26 and one lengthwise Wall of the pocket provides a second abutment 28 with which the usual solid back portion of the blade is in constant contact so that the position of the blade is stabilized and the blade is prevented from pivoting and getting into a dangerous angular position while being used. One furcation or side wall as shown in Fig. 2 in particular is formed with a boss 30 which is in turn provided with a screw threaded hole to accommodate a setscrew 32 the shank of which extends into the pocket and engages the blade and binds it securely in place in said pocket, said screw having a suitable finger-grip 34. The furcation 20 is provided with a right angularly disposed guide flange 36 the flat surface 38 of which provides a guide shoe. A similar flange 40 is provided on the other jaw or furcation and this is denoted at 41 and it has a flat face 42 which is preferably corrugated or otherwise milled to provide antislipping elements. The blade is inserted and adjusted in the obvious manner shown in the drawings. It is also used in several different ways as illustrated in Figs. 2, 4 and 5.
The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.
What is claimed as new is as follows:
A box slitting tool comprising a head having a handle, said head being bifurcated, the furcations being solid and providing a rectangular blade receiving and retaining pocket between the furcations, said pocket being wholly closed at one end and substantially open at its opposite end, one end of the handle being rigidly connected to a margin of the head adjacent to the closed end of said pocket, said pocket being disposed at an oblique angle, in relation to the long axis of said handle, one of the furcations being provided with an outstanding right angularly disposed flange having a flat surface providing a guide shoe, and the other furcation being provided with an oblique angled outstanding flange disposed at an obtuse angle to said first flange and having a flat corrugated surface providing an anti-slipping guide shoe, and a setscrew carried by one of the furcations and having its shank projecting into said pocket in a manner to hold the blade 5 in the pocket.
References Cited in the file of this patent UNITED STATES PATENTS Arthur June 21, 1938 Lurie Aug. 23, 1938 Unsinger July 15, 1941 Vinton Dec. 2, 1941 Bates May 12, 1942
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2120960 *||Jul 2, 1936||Jun 21, 1938||Arthur James F||Cutting device|
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|US2264960 *||Jan 16, 1940||Dec 2, 1941||Stallo Vinton||Instrument for opening paper boxes and cartons|
|US2282697 *||Sep 8, 1941||May 12, 1942||Alfred Bates||Safety carton opener|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5412871 *||Aug 17, 1994||May 9, 1995||Reyburn; Thomas P.||Safety stock carton knife|
|US5899372 *||Oct 1, 1997||May 4, 1999||Rodriguez; Oscar||Method for opening a tab on a cardboard box|
|US6182364||Sep 1, 1998||Feb 6, 2001||Thomas P. Reyburn||Safety stock carton knife tip assembly and method of making|
|US6484404 *||Oct 16, 2001||Nov 26, 2002||Liang-Shen Kao||Multi-functional exacting knife structure|
|US8429825||Mar 8, 2011||Apr 30, 2013||Sonoco Development, Inc.||Cutting apparatus|
|US9737999 *||Dec 16, 2013||Aug 22, 2017||Gb Ii Corporation||Folding knife with tobacco can opener|
|US20030019337 *||Jul 25, 2001||Jan 30, 2003||S Twenty One International, Inc||Cutting device and method of use|
|US20140165509 *||Dec 16, 2013||Jun 19, 2014||Gb Ii Corporation Dba Columbia River Knife & Tool Company||Folding knife with tobacco can opener|
|WO1997038935A1 *||Apr 11, 1997||Oct 23, 1997||Oscar Rodriguez||Package tab opener|