US1558889A - Pencil - Google Patents

Description

F. KAISER PENCIL File d Nov. 28, 1921 combinations defined i-n'theiolaiims Patented Oct. 27, 1925 UNITED ER IN D KA SER, 0. ST- AUL, mmmsomgssseros 9 ONE- AL T0 R E a. EOununo-r MINNEAPOLIS, MINNESOTA.

PENCIL.

Application filed November 28,1921. Serial No. 518,175.

To all whom 2'15 may concern:

Be it known that I, FERDINAND KAISER, a citizen of the United States, residing at :St. Paul, in the county of Ramsey and State of Minnesota, have invented -certainn ew' and useful Improarements in Pencils; and I do hereby declare the following to 'be a full,- clear and exact description oat the inventmn, such as will enable others skilled in the art to which it appertains to make nsje the same.- v

My invention relates to that type of ineohanioally operated lead pencil th is .6 peoially adaptedto use marking leads of such small diameter that sharpenrng there of is not required; and the object of my inventioi'i is to provide a pencil of the above type which will he l0t" neat or ornamental appearance, durable, easily operated and generally satisfactory for the purposes had in wiew'and which may "be manufactured at a. minimum of icost.

Generally stated, these objects 1 accomplish by the construction, arrangement and and the preferred form .of which pencil is illustrated in the accompanying idlatvlzngs' and particularly described in the specificat on.

A commercial term .otthis'fimprgoved pen,- ciil is illustrated in the accompany-lug .drawiirgs, wherein-like characters 'indidatelike parts throughout the several Views.

Referring to tlie'drawingsz Fig. 1 is a plan View lot the improved pencil, some parts {being sectioned' and the pencil being shown on an ei-larged scale;

Fig. 2 is an axial section .o nithe l1ne'22 of Fig. 1'; a

Fig. is a iperspeotiveshownig'all voit parts of the penoilpexcept the outer 'lQZ SLIIg or barrel and which parts are removable from said outer easing or barrel;

Figs. 4, 5 and 6 are transwerse sectlons taken, respectively. .on the lines H, 5-5 and -6-6 of Fig. 25

Fig. 7 is a plan .iew showing the flat Y stamped sheet metal blank firom which the so-eal led lead p.usher'- and parts formed in? tegral therewith are formed; Fig. 8 is a perspective showing inedifled form of the lead pusher; and v Fig. 9 is a transverse section taken on the line 99 or Fig. 8.

The oon'str-uetion illustrated in Figs. 1 to i" inclusive, will firstibe described.

Asa highly important feature of this in vention, the tubular outer shell or barrel of the pencil is directly formed with a spiral thread in i s ma n body por -ion- .This ou er shell 10. in practice, will he made from a thin-metal tube and its threads '11 will be placed therein so that not only the interior but the exterior thereof will have the thread formation. The internal threads are for -sp rsi o wit h ead pu r, bu t ex erna hre ds Q piralfl s ri -gst s gi th sX rior o t e he l :1 io mst sn tha Pr vent he barr hem sl pping in the and sr'd s s pss s y mp-smu w en h barr l i ma i h a pol s d surfa 0 i ir s dne nd o th u er sh 1. 0, a i us l, is c caly s t sa sd t tons a small opening through whiel the small lead v ll pas it os jsn sgsm i th other end of sa-idshell 10 is eylindrieal and sss h- The so-called lead pusher is of tubular term and ha th aded ga men di s y wi the internal threadsof the enter shell 91- sr sl As lislilyinirs ts f a ure, this lead pusher is constructed and adapted s sear th a ditional a t of s 1 h ding st i ns i/ lead i hirrem t 11 t e Qm-m fifl m f the Pe i sli comb ed e d P sh and messziini is mad from a ingl p e e f t s sheet- ;metal first stamped as shown in Fig. 7 and then bent to form tubular lead pusher 12 that also serxzesas lead magazine. The edgespf element 1-2 are spaced totsm" ent n s 13- T i t u a member 12 has outwardly pressed threads l-ql that 'tnlga'ge the internal threads of the Outer tubul rsh i 0 ba r l n w ll b heldef-r iotionaqlly engaged therewith by the outward springing stress in said tubular member. The blankirom which the tube 512 is made is formed at one end with a he'ad-glforming portion 15, with a slot 1- 6 there-imyand at its other end with head- ;torming portion -17 having an extension 18 with .a widened outer end portion 19. In the ,completed devise, the head-forming portions 15 and'17 are bent to close the ends of the tube 12;; the extension 1 8 is bent to form a tubular neck and the widened outer end port-ion 1:9 is bent to form a split tubular {lead-holding socketthat will frictionally clamp the operative lead 3/ There n- .plete form of the con ibined lead pusher and magazine is best shown in Fig. 3, by reference to which it will be seen that the tubular portion 12 is well adapted to holda large number of extra leads. The portion 19 at the bottom socket is indented at 19 to close the bottom of said socket.

For rotating the tubular combined lead pusher and magazine, I provide an operating stem. 20, preferably in the form of a small fiat metal bar, which works freely through the slot 16 of the head 15 and is provided with an expanded head 21 that can be passed through said slot 16 only when the parts shown in Fig. 3 are removed from the outer shell or barrel and said stem is moved to an angular position. An operating head 22 is shrunk, cast or otherwise rigidly secured to the trunnion-like outer end of the stem 20, and a cap-like sleeve 23 is swiveled on said outer end of the stem 20 immediately adjacent to the head 22, said stem being, as shown, flattened at 2st to hold the stem 20 against axial movement in respect to the sleeve 23 while free for rotation therein. The sleeve 23 is split and thereby made slightly expansible, to adapt it to be telescoped into the cylindrical end of the outer shell or barrel 10 and to be quite firmly frictionally clamped therein but capable of being removed, when the parts shown in Fig. 3 are to be removed from the barrel.

When the parts of the pencil are assembled as shown in Fig. 2, the frictionally held sleeve 23 affords a nonrotary bearing for the stem 20. Rotation of the stem 20 is, of course, produced by rotation of the operating head 22 and rotation of said stem causes rotation of the tubular combined lead pusher and magazine 12. Of course, rotation of the tubular combined lead pusher and magazine in one direction causes it to travel toward the tapered end of the outer shell, thereby projecting the lead, and rotation thereof in the opposite direction will cause the lead to be drawn into said outer shell.

To place a new lead in the socket 19, the parts shown in Fig. 3 will be removed from the outer shell or barrel and this may be readily done by rotating the tubular member 12 until its threads 14: are brought into the cylindrical outer end of the barrel and thereafter pulling on the head 22, thereby withdrawing the sleeve 23 and said member 12 from the barrel. Said parts shown in Fig. 3 may be quickly replaced by an operation substantially reversed from that just described.

The modified construction illustrated in Fig. 8 is like that already described except that the tubular member 12 is formed with diametrically opposite circumferentially spaced thread sections 25 and said tubular member 12 is provided on opposite sides of said thread sections with slits 26 which make the opposite threaded portions very resilient and capable of being slipped within the threads of the barrel or outer shell 10, simply by axial pressure such as would be produced either by pressing the pencil against the projecting point of the lead or by pulling outward on the tubular member 12 by force applied thereto through the stem 20 and head 22. By the latter indicated operation. it is made an easy matter to quickly pull the entire internal mechanism of the pencil out of the outer shell or barrel 10 by direct or straight-line movement and with out rotation of any of the parts and, of course, said parts may be replaced by a reverse straight-line movement.

The simplicity of the pencil described is obvious. As illustrated, it is made up en tirely of five elements, to wit: the outer shell or barrel; the combined tubular lead pusher and magazine with its integrally connected parts; the operating stem 20; the operating head 22; and the frictionally held bearing sleeve 23. All of these parts may be commercially made at very low cost but the pencil produced by the assembled parts has all of the requisites of an efficient high grade pencil. Of course, the pencil and especially the outer shell or barrel and the exposed operating head may be made either of cheap metal, plated or otherwise finished or may be made of the more expensive materials, such as .silver.

Pencils of the above type are very frequently used for advertising purposes and when so used require smooth space upon which an advertisement. such as a firm name or the name of some goods, may be printed, stamped or otherwise marked. Hence, in the preferred form of the pencil, the pressed spiral threads are extended from the conical end of the shell or barrel only about half way back, thereby leaving about one-half of the outer shell or barrel smooth for the purpose stated.

What I claim is:

1. A pencil comprising an outer shell having pressed internal threads, a resilient tubular combined lead pusher and lead magazine having pressed threads engageable with the pressed thread of said outer shell, an operating stem rotatable with said combined lead pusher and magazine but permitting the latter to slide thereon, and an operating head connected to the outer end of said operating stem. said combined lead pusher bular oombinedlead pusher and lead magazine having pressed threads engageable with the pressed thread of said outer shell. an operating stem rotatable with said combined lead pusher and magazine but permitting the latter to slide thereon, andan operating head connected to the outer end of said operating stem, the threads of said combined lead pusher being interrupted and the thread sections being at diametrically opposite points and capable of being slipped within the threads of said outer shell by non-rotary sliding movements.

3. A pencil comprising an outer tubular shell, a lead pusher working with threaded engagement in the interior of the shell, a stem for rotating said lead pusher having a head exposed at the exterior of said shell, and an anchoring sleeve swivelled to said stem and frictionally engageable with the interior of said shell. said stem being a flat bar having an upset portion holding said sleeve adjacent to said operating head with freedom for the swivel action stated.

In testimony whereof I affix my signature.

' FERDINAND KAISER.

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