US1703596A - Step-by-step pencil case - Google Patents

Description

Feb. 26, 1929.

-L. DI REBAYLIO STEP-BYQSTEP PENCIL CASE Filed Nov. 5, 1926 ||H. HHHHHHH Patented Feb. 26, 1929.

UNITED 1.110 m REBAYLIO, or BLOOMFIELD, New JERSEY.

srnr nx srnr PENCIL CASE.

Application filed November 3, 1926. Serial No. 146,002.

This invention relates to what are termed step-by-step lead-feeding pencil cases. That is to say, when ready for use in the usual way a certain length of the lead or other marking rod projects from the forward end ofthe casing. When by reason of wearing away in use or the breaking off of the exposed end it becomes necessary to-extend the lead, certain movable parts of the. holder are reciprocated to bring about the desired projection of the marking element. It is to the class of such pencil cases thatthis invention belongs.

The object of theinvention is the production of a writing or marking instrument of the nature stated comprising combined parts of particularly cheap and strong character, and having special construction and arrangement whereby the lead may be securely held when in use, and certainly and conveniently fed'when further exposure is called for.

In the accompanying drawings the special construction and arrangement of the parts of this invention are illustrated. Fig. 1 is a section through the conical end and external cone of this invention. The lead is shown in position for use. Fig. 2 is a similar view showing the conical end andclamping external cone separated, andiready for the lead feeding movement. Fig. 3 is a like sectional View of a modified form of this invention. Fig. 4 is a vertical cross-section on the broken line 4.- 1 of Fig. 3. Fig. '5 is. an end View of the wire retaining clamp shown in Fig. 3. Fig. 6'is a side View of the wire clamp. I v In all the figures of the drawing the scale of drawing has been considerably exaggerated to render the illustrations clearer. I

Throughout the description and drawings the same numeral is used to refer to the same art. P Considering the drawings, Figs. 2 and 3, the body 1 of any chosen material has a lead or crayon 2 nr'ovalfle' lengthwise in a suitable bore through the body. The body 1 has the external screw threads 3, a reduced portion 4 of less diameter, and a conical end 5 having a split 6 extending lengthwise thereof. The lead passes out through the end 7 of the conical end 5. The end 7 fits into a similarly shaped end 8 of an external cone 9, which has the threaded grooves 10 corresponding to and in engagement with the threads 3 of the body 1. In the split or channel 6 are the legs 11 of the wire feed clamp by which the lead is moved, and this clamp has a semi-circular end portion 12 movably'engaging the reduced portion 4 of the body 1.

In a circumferential groove 13 formed in the exterior of cone 5 a semicircular body portion 1a of a retaining clamp is located, and the legs 15 of this clamp are located in the split 6 of the conical end 5 of the body within the legs 11 of the feed clamp. These parts will be again referred to.

In the modification illustrated in Fig. 3 the body 17 has through it the longitudinally movable lead 18. The body 17 has the portion 19 of reduced diameter and the conical end portion 20 as previously explained in connection with Figs. 1 and 2. The split or channel in the conical end 20 is marked 21, Y

and the external hollow cone is designated by number 22. It will beoobserved in Fig. ,3 that the cylindrical end of-the external cone 22, has the inwardly turned and rounded pertion 23..engaging the semi-circular end 2 10f a wire feed clamp, the legs 25 of which are arranged in the split .21 in engagement with the lead 18. V l

In a circumferential groove 26 upon the exterior of the conical end 20 of the body 17 is placed the semi-circular end 27 of, the wire retaining clamp, the legs 28 of which are ar ranged in the split 21 below or towards the lead 18 with respect to the legs 25 of the feed clamp. It is desired that attentionfmay be given to the fact that the wire feed and retaining clamps are all of the same shape and construction, and as illustrated in Figs. 5 and 6. For that'reason it is not regarded as necessary to introduce separate figures all of the same kind to illustrate the structureof each ation isthe same for each wire clamp.

To explain the operation, let it be assumed that while the parts are associated as illustrated as inFig. 1 an end piece16 of the lead is broken off as illustrated in Fig. 2. By rotating body 1 while holding cone 9, theconical end 5 is drawn in as illustrated in Fig. 2, and the semi-circular portion 12 of the outer or feed clamp is now on the left hand side of the reduced portion 4 of the body. This position is brought about by reason of the fact that the semi-circular end portion 12 of the feed clamp engages a. portion of the internal grooves in the externalcone 9 as shown in Figs. 1 and 2, and the reduced portion 4 slips within the portion 12 of the feed clamp as the body 1 moves rotatively towards the right hand. During this movement the feed.

clamp legs grip the lead. Now, the load has in eliect been extended further from the end 7 of the conical end by the legs 11 of the outer or feed clamp, and if the cone 9 be turned so as to restore the parts to the positions set forth in Fig. 1 the legs 15 of the in ner or retaining wire clamp will hold the lead in position until the movement of the cone 9 to the right again exposes a desired length for writing purposes, and'clamps the split Cone 5 on the lead as before. The inner or retaining Wire clamp is necessary for the reason that when the body 1 is restored to the position with-respect to the other parts as illustrated in Fig. 1, the lead is moved towards the left hand between and in contact with the ends of the legs of the teed clamp, which tends slightly to retard that movement. But, the legs 15 of the retaining clamp by reason of their grip of the lead maintain the desired movement of the lead with the body 1 towards the left hand.

In the modification shown in Fig. 3 the operation is very closely the same. If the lead breaks off or is used up, the cone 22 may be moved to the left hand, the rounded end portion 23 traversing the reduced portion 19 of the body 17. This movement in effect feeds the lead 18 to the left, and when the cone 22 is again restored to the position forth in Fig. 8 by a movement to the right hand side, the legs 28 of the retaining clamp prevent the inward movement of the lead with the cone. It is believed that the special parts described are unusually simple in structure and may be most cheaply manufactured, and that they are lasting in character and cannot get out of order in operation.

Having now described this invention and explained the manner of its use, what I claim 1s 1. In a step-by-step pencil case, a body part having a portion reduced in diameter and a conical end portion split longitudinally, the said body having a passage through it forthe lead, a cone movable on the body and adapted to clamp the said split port-ion of the body on the lead, a member arranged in the split portion and having a part movably engaging the said reduced portion of the body and legs engaging the lead to "feed the same, and a re taining member moved by the said body part and arranged in the said split portion and positively engaging the said conical end of the body and having legs acting upon the lead to hold the same against movement inwardly with respect to the body.

2. In a step-by-step pencil case, a body part having a portion reduced in diameter and a conical end portion split longitudinally, the said body having a passage through it for the lead, a cone movable on the body and adapted to clamp the said split portion of the body on the lead, a member arranged in the split portion and having a semi-circular end portion movably engaging the said reduced portion of the body and legs engaging the lead to feed the same, and a retaining member moved by the said body part and arranged in the said split portion and positively engaging the said conical end of the body and having legs acting upon the lead to hold the same against movement inwardly with respect to the body.

3. In a step-by-step pencil case, a body part having a portion reduced in diameter and a conical end portion split longitudinally, the said body having a passage through it for the lead, a cone movable on the body and adapted toclamp the split portion of the body on the lead, a. member composed of wire having a part engaging the said reduced portion of the body and legs arranged in the said split portion engaging the lead tofeed the same, and a retaining member moved by the said body part and composed of wire having a portion positively engaging the split conical end of the body and legs arranged in the said split portion and adapted to engage the lead to hold the same against movement inwardly withrespect to the body.

4. In a pencil case, a body having a conical split end, the said body having a passage through it for the lead, a cone movable upon the body to clamp the lead in the split end of the body, leadengaging members having legs in the said split portion, one of said members adapted to feed the lead and the other member moved by the said body part and arranged to act upon the lead to hold the same against movement inwardly with respect to the body.

In testimony whereof I afiix my signature.

LEO n1. REBAYLIO.

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