US 3168072 A
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Description (OCR text may contain errors)
Feb. 2, 1965 MASAKIYO NI1 'TA PENCIL Filed June 21, 1963 H53 H54 H55 United States Patent Ofiice 3,158,072 Patented Feb. 2, 1955 3,168,072 PENCIL Masakiyo Nitta, 2583 S-chome, Kamimeguro, Megnro-ku, Tokyo, Japan Filed June 21, 1963, Ser. No. 289,703 Claims priority, application Japan, June 10, 1963,
1 Claim. (Cl. 12083) The present invention relates to a lead pencil, and more particularly, to a lead pencil of a very simple and inexpensive manufacture which can be presented free of charge for advertising.
It is not infrequent that when a spectator enjoying baseball, football or other sports game wants to keep score or a man going away from home with no coat on desires to put down something on memo, he finds himself with no writing instrument whatever.
As is well known, the lead pencil in general is rather long and its sharpened point of lead tends to be broken even by a slight impact and is thus inconvenient to carry. Therefore, in order to prevent the lead point of pencil from breaking, there have been proposed various means, such as, a cap to cover it, a clip attached to the pencil to be put in a pocket, and a pencil case to hold it. However, it is not always convenient for everyone to have a pencil or other writing instrument on his person when he goes away from home. It will be, therefore, a great convenience if there is available a pencil which can be thrown away or disposed at will after a temporary use on the way outdoors.
It is, therefore, a primary object of the invention to provide a lead pencil of an exceedingly simple and inexpensive construction in which a short lead is provided and which can be thrown away or disposed at will after a temporary use.
Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accompanying drawings, discloses preferred embodiments thereof.
in the drawings:
FIG. 1 shows a perspective view of a lead pencil in accordance with a preferred embodiment of the invention.
FIG. 2 is a plan view of FIG. 1.
FIG. 3 is a sectional view of FIG. 2 taken along the line TL-III.
FIG. 4 is a plan view of a pencil holder of the lead pencil as shown in FIG. 2.
FIG. 5 is a sectional view of FIG. 4 taken along the line VV.
FIG. 6 is a plan view of a label printed with a design or a legend thereon to be pasted on both sides of the lead holder.
FIG. 7 is a side view of FIG. 6.
FIG. 8 is a perspective view of a lead pencil in accordance with another preferred embodiment of the invention.
FIG. 9 is a plan view of FIG. 8.
FIG. 10 is a side view of FIG. 8.
FIG. ll is a sectional view of FIG. 9 taken along the line XIXI.
FIG. 12 is an end sectional view of FIG. 9.
FIG. 13 is a plan view of a cardboard blank for making a plurality of lead holders in accordance with the preferred embodiment as shown in FIG. 8, in which the cutting of the blank and the press molding of the groove for lead are illustrated.
Referring to FIGS. 1-7, inclusive, which illustrate a preferred embodiment of the invention, a pencil lead holder 1 is made of cardboard or pasteboard cut in the form of an ellipse. It will be noted that any form other than ellipse is preferred as desired, and any suitable material other than cardboard may be chosen. This form may be as a long rectangular one with its four corners cut 01f. As shown in FIG. 4, a longitudinally extended narrow slot opening 2 substantially equal to or slightly larger than the diameter of lead 5 is cut off at the lower end of the lead holder.
It will be understood that if the cardboard used is less than the diameter of lead in thickness, two plies of cardboard bonded together by an adhesive may be used.
Then, a short piece of lead 5 is inserted into the slot opening 2 with its lead point protruded. In order to prevent the lead 5 from leaving the slot opening 2, both sides of the lead holder 1 are pasted with a label 3 as large as the holder, respectively, this label preferably printed with a design or a legend for advertising.
The lead pencil thus produced with the above Simple construction can be used as a pencil by having it between ones fingers. The function of the lead pencil can be fully achieved by this simple pencil of the invention.
The lead pencil of the invention can be manufactured at a relatively low cost by mass production on a commercial scale so that it will be of great benefit as a mass media for advertising.
Another preferred embodiment of the invention in connection with FIGS. 8l3, inclusive, a lead holder 6 is made of cardboard or other suitable material, a synthetic plastics may be used. In the longitudinal center of the cardboard is molded by e.g. press molding process a semicircular groove sutliciently large to receive the lead 5 therein. This lead holder can be cut off from a large blank of cardboard, as illustrated in FIG. 13. A complete pencil, as shown in FIGURE 9, is generally rectangular in form with corners '7 and 8 cut off. In addition, either single or double score lines (continuous small slot line) 9 parallel with the corner lines 8 are preliminarily provided, the reason of which will be de scribed hereinbelow.
Manufacture of the above lead holder 6 is accomplished as shown in FIG. 13 by the steps of cutting off a plurality of triangular notches 8 and rhombic notches 7 from a large blank of cardboard 12, providing single or double score lines at predetermined positions, press molding a plurality of semicircular groove 11 sutficiently large to receive a piece of lead 5, respectively, and finally cutting off each holder 6 along the lines 13, respectively, to obtain a piece of holder 6.
A piece of lead 5 is placed in the groove 11 with a point thereof protrdued at the end of the holder 6. Then the blank is folded inwardly along the line 14 and the respective halves thereof bonded together by a suitable adhesive 10 to produce a lead holder.
It is preferred that the outside surface of the holder 6 be printed with a design or a legend for adverti'sing.
With the consumption of the lead point by use, the end of the holder 6 is removed froin the score line 9 to expose a fresh point of lead for re-use.
As fully described in the foregoing, the lead pencil of a very simple and low-cost construction of the invention will be manufactured at a cheap cost by means of mass production, so it will be distributed free of charge among spectators and customers as advertising, thus it will give them a temporary benefiit for putting down score or memo.
It is though that the invention and many of its at tendant advantages will be understood from the foregoing description and it will be apparent that various charges may be made in the form, and construction without departing from the spirit and scope of the invention, the forms hereinbefore described being some preferred embodiments thereof.
A lead pencil which comprises: a lead holder, said holder being formed from a generally rectangular blank of sheet material selected from the group of cardboard and synthetic plastics, said blank having a longitudinally extending semi-circular groove provided in one surface thereof, said holder being made by folding said blank along a line normal to said grooves so as to bring portions of said surface as defined by said line into superposed position whereby portions of said groove in each of said surface portions co-act to'define an elongated cavity having one end open; and a pencil lead, said lead being adapted to be partially received within said cavity and protrude outwardly from said holder in the plane of said superposed surfaces, said surfaces being bonded together to hold said lead within said cavity, the corners of one end of said holder disposed adjacent to said protruding lead being cut off along a pair of diverging lines extending from points immediately adjacent to said open end of said cavity, said holder being provided with a least one pair of score lines disposed parallel to said divergent lines and at least one score line disposed parallel to said end of said holder and connecting said pair of score lines, whereby portions of said holder as defined by said score lines may be removed to successivelytexpose portions of said'lead disposed within said cavity.
References Cited by the Examiner UNITED STATES PATENTS 865,764 9/07 Creahan 120-40 1,367,872 2/21 Glaesser 120-l03 1,373,062 3/21 Faber 12013 X 1,377,182 5/21 Biondo l20-13 2,296,455 9/42 Schroeder 12083 JEROME SCHNALL, Primary Examiner. LAWRENCE CHARLES, Examiner.