US1983728A - Crayon holder - Google Patents

Description

Dec. 11, 1934. N. BAFETTI 1,983,728

CRAYON HOLDER Filed Sept. 15, 1933 Patented Dec. 11,1934 I I UNIT-ED STATES PATENT OFFlCE -.GB.AYON HOLDER.

- Nicolino Bafettl, Chicago, Ill. Application September, 1933, Serial No. 689,539

1 Claim. (01 120-13) This invention relates to improvements in 13 to provide for the desired flexibility of the crayon holders. fingers and enable the thimble 11 to be screwed One object of the invention is to provide a rearwardly of the barrel 3. distance suflicient to holder having gripping means capable of firmly effect the clamping of the forward ends of the 5 gripping and holding in writing position pieces fingers upon acrayon of a diameter considerably 5 of crayons of different lengths and diameters as smaller than the diameter of the barrel. well as crayons of varying diameters, such as The thimble 11 has its forward end 17 of a ordinary tapered chalk crayons. diameter capable of accommodating the largest Another object of the invention is to provide crayon that can be inserted in the barrel 10. a holder which can be manufactured economi Thus the end 17 preferably is of the same diam- 10 cally of relatively few parts. eter as that of the barrel stock. The thimble Other objects relate to various features of conhas a tapered or' frusto conical clamping sec struction and arrangement of parts which will tion 18, preferably an intermediate knurled secbe apparent from a consideration of the followtion 19, and a rear threaded section 20. The ing specification and accompanying drawing, internal diameter of the section 19 is great wherein enough to be moved over the lugs or threads 14 Figure 1 is a longitudinal sectional view of a when the fingers 16 are parallel, that is, when crayon holderembodying the present invention, the fingers are engaging the large end of a craythe small end of a tapered crayon being shown on of maximum diameter as shown in Figure 2. 20 in writing position. The threads 20 are adapted to engage the thread- 20 Figure 2 is a longitudinal section of the holder ed section 13 for drawing the thimble upwardly with the large end of a tapered crayon being or rearwardly of the barrel, during which moveheld in writing position. ment the conical portion 18 of the thimble en- Figure 3 is a broken view of the forward end gages the lugs or threads 14 and compresses of the tubular barrel of a holder. the fingers radially inwardly against the crayon. 25

Figure 4 is a longitudinal sectional view of a It will be noted in Figure 1, where the small clamping thimble. end of a tapered crayon is shown in writing posi- Figure 5 is an elevation of a thimble. tion, that the thimble has been advanced up- Figure 6 is an elevation of a modified form of wardly or rearwardly of the barrel until the ends barrel. I of the fingers project from the thimble. 30

In the drawing the holder is shown as com- It will be seen that the lugs or corrugations 14, prising but three parts, namely a tubular barrel bearing against the inner surface of the tapered 10, a clamping thimble 11, and'an end cap 12 section-18 of the thimble, effect the radial comthreaded to the upper end of the barrel. pression of the fingers to a greater extent than The barrel 10 preferably is of metal and has would be possible were the corrugation not pres- 35 pressed outwardly thereof a section of threads ent. In Figure 2, where the large end of a short 13. By pressing the threads outwardly they form crayon is held in writing position, the thimble is no constriction in the interior of the barrel and shown as projecting beyond the ends of the finhence the-tubular stock of which the barrel is gers, The lugs 14 are accommodated by the 40 formed need be of no greater internal diameter larger diameter of the thimble, while the forward 40 t a e ma diameter o t yo t e ends only of the fingers l6 engage the crayon. used in the holder. The threaded section 13 Th n 17 M1 thi being large enough only constitutes a continuation of the similar threadto permit passage through it of the large end of ed section 14 but as the latter section usually the crayomthe latter willbe supported adequately functions as mere lugs or corrugations to inwhen only a short piece remains as shown in 45 crease the degree of clamping movement of the Figure 2. When too short to be held by the holder, device, the two groups have been given distinthe stub can be removed by retracting the thimble guishing numerals for the purpose of clarity of and another crayon inserted or fed down from description. the barrel which comprises a crayon magazine. The forward end of the barrel 10 is provided It will be seen that the lugs or corrugations 14 with a plurality of slots 15, preferably four in increase the degree of clamping action of the finnumber, to provide a similar number of clampgers, thus rendering the present holder capable ing fingers 16. It will be noted that the slots of firmly holding crayons of different diameters 15 extend from the forward end of the barrel, as well as tapered crayons.

I 55 through the corrugations 14 and to the threads By pressing the threads 13 outwardly f the barrel, and by having the end 1'! of the thimble at least as great as the internal diameter of the barrel, a crayon of the largest size that can be inserted in the barrel can be slid between and clamped by the fingers in writing position.

In Figure 6 the modification consists in forming only a few lugs, corrugations, or threads 21 at the free ends of the fingers and providing unthreaded sections 22 at the upper portions of the fingers. This renders the fingers slightly more flexible and thus slightly less effort is required in screwing the thimble into clamping positionbarrel between the two extreme positions shown,

is relatively short, due to the provision of the expanded portion of the thimble which accommodates the fingers when a crayon of large diameter is used and the relatively rapid compression of the fingers which occurs when the thimble is screwed upwardly. Thus just a. few turns of the thimble are necessary in clamping the small end of a crayon in position after discarding the large end of a previous crayon.

While I have shown and described certain em bodiments of my invention for the purpose of illustration I do not wish to be restricted specifically thereto except as so limited by the appended claim.

I claim:

A crayon holder comprising a tubular barrel having its lower end slotted longitudinally to provide a plurality of radially flexible fingers, the lower ends of said fingers being provided with a plurality of transverse corrugations on both the outer and inner surfaca thereof, said outer corrugations extending outwardly beyond the original outer surface of the barrel, a portion of said barrel adjacent the upper ends of said fingers being threaded, and a clamping thimble having a frusto-conical portion provided with an p nin at the lower end,'said thimble having the upp portion thereof threaded for cooperative engagement with the threads of said barrel and having a diameter suflicient to accommodate said cormgated fingers whereby the large end of a tapered crayon can be positioned between the lower ends of said fingers for engagement by the lower inner corrugations thereof as the thimble is screwed rearwardly of the barrel to cause said conical portion of the thimble to engage the outer corrugationsof' the fingers and compress the same ra-- dially to force the lower inner corrugations into engagement with the crayon, the threaded portion of said thimble being of such length that said thimble can be movedrearwardly of said barrel sufileiently to cause the forward ends of the fingers to project from the thimble and be compressed by the coaction of one or more of said .outer corrugations and the lower end of said thimble into gripping relation with the small end of a tapered crayon.

' NICOLINO BAFETI'I.

Images