US1705865A

US1705865A - Mechanical pencil

Info

Publication number: US1705865A
Application number: US712528A
Authority: US
Inventors: Herbert W Johnson
Original assignee: Wahl Co
Current assignee: Wahl Co
Priority date: 1924-05-12
Filing date: 1924-05-12
Publication date: 1929-03-19
Anticipated expiration: 1946-03-19

Description

March 19, 1929 H. w. JOHNSON MECHANICAL PENCIL Filed May 12, 1924 2 lSheets--Shee A 4. M di W u lll lllllllllulll ,.r G .f IIIIII Il MK Mw Mam m, w29, H, W, JOHNSQN m MECHANICAL PENCIL Filed May 12, 1924 2 Sheets-Sheet 2 III/1,47," I

' 45.'.viewsim1lar'to Fig. 2

naman a. 19 ieee.-

" Vmasas PATENT o`1=r1ca.

maenner w. manson, or cIIIc'Aeo, ILLINoIs, AssIGNon'ToTIIE WAHL coiIrANY, or camada, ILLINOIS, A conronArIoN or DELAWARE.

MECHANICAL PENGIL.

application med kay 12, 1924.v Serial No. 712,528.

^ The present invention relates to mechanical pencils, and particularly of the type having lead magazines from which leads may be supplied to succeed the used lead in the pencils.

Among the objects of the invention is to provide means for feeding or supplying leads successively from the'magazine to the tip of the pencil to provide a mechanical pencil wherein the magazine for the extra leads is located at the 'rear end of the pencil so that the magazine can be filled from the rear of the pencil, and wherein the pencil is provided with mechanism for automatically and positively feeding a succession of leadsin predetermlned order from the magazine to and'through the pencil tip; to provide means, which when operated manually will automftically supply the lead from the 2o magazine'to succeed the lead that has previously been fully fed or used; to provide means whereby the succeeding lead from the magazine may be fed into loadingor charging position at the same time of the feeding of the lead bein used at the. tip of the pen-v cil; to provide eedingmeans or mechanism with a movable feedin element which when it moves in one direction will feed the lead to be used as well as a magazine lead to follow the first wme'ntioned lead and when movedv in a reversed or retracted direction. will operate to automatically move the mag-y p azine lead into feeding position behind of or successive to the 4le ad-pre'viously fully fed; and to provide such other objects, ad-

vantages and capabilities as will vlater more fully appear and are inherently possessed vby the invention. h

Referring l to the drawings lillustrating ,a 4o preferred embodiment of the invention, Fig.

l is a longitudinal sectional view of a pencil` constructed inV accordance with the invention; Fig. 2 is a similar view taken transversely to that shown in Fi l; Fig. 3 is a with parts further sectioned; Fig. 4 is a view in perspective `showing parts of the pencil partly in section and partly in fragments;'Fig. 5 is a fragmentary longitudinal sectional view showing the feed rod at its forward or lowerv end of travel and with a new ormagazine lead ready to be loaded into the feed channel or -tube of the device; Fig. 6 is a transverse sectional view taken on line 6 6 of Fig. 1; Fig. 7 is a transverse sectional view taken lbeing used to indicate the relative positions of the upper parts; Fig. 12 is a view in perspective of the magazine shell; Fig. 13 1s a perspective view, partly in section, of the charging tube; Fig. 14 is a view in perspective, with parts separated, of the guide sleeve and control member; and, Fig. 15 is a view in perspective of the feed screw, feed rod and feed tube.

Referring now more in detail to the drawings, the particular embodiment chosen t0 illustrate the invention is shown as comprising a barrel 1 having, at its forward end, a tapered portion 2, and at its rear end, a threaded portion 3 to which'may be threaded a coupling piece 4 suitably secured to a belled portion 5 at the rear end of a magazine shell 6 included within the barrel 1. At the forward end of the barrel is connected a rifled tip 7 which has a threaded shank 8 to which is connected a plug 9 having taered exterior to fit with the tapered portion 2 of the barrel. The plug 9 is of such a length as to provide a socket 10 in which rotatably lits a bearing portion 11 of a cup shaped member 12 containing the lower ends of a charging tube 13 and a feed tube 14,0f the feeding mechanism as1 clearly shown in Figs. 1, 2, 3 and 5 of the drawings.

The charging tube is shown in detail in Fig. 13 and comprises Va ltubular member having a longitudinal feed slot 15 extending nearliv the whole length thereof and has connecte or intermediate the ends of the tube a crosshead 16l of substantially circular form but having a radial slot 17 in alinement with the s'lot 15 and also having a peripheral rib 18 for aiding in locating the mechanism substantially centrall or concentric in the bar-Y rel 1. At one si e of the rib 18 is formed a shoulder 19 for the receiving and engaging of the lower end 2O of the magazine shell 6. At the other side of the rib 18 or below the same as shown in Fig 13, is a shoulder substantially midway of the tube Ywe 21 upon which is fitted an annular body portion" 22 of a spring 23 extending toward the point or tip of the pencil and arranged substantially parallel to the slot and opposite the same. r1`his spring has preferably guide

ears

24 and 25 extending laterally from -the spring 23 and capable of moving into and out of engagement with

slots

26 and 27 formed in the side of the tube and at the sides of the slot 15. 1t may thus be seen that the spring 23 may lie in the slot 15 to the extent permitted by the entry of 'the ears 24 and'25 into the

slots

26 and 27. See the details shown in Fig. 4 of the drawings. The spring 23 is connected to the band portion 22 by a bent portion 28 so as to leave a space between the slot 15 and the b ent portion 28 for the passage of a magazine lead as will later more fully appear. This bent portion 28 is tapered or bent to form a gulding surface 29 for the'end of the lead, and is located opposite the slot 15 as well as' 1n alinement with the slot 17, the latter being a passage through which the magaizne lead will pass when being fed from the magazine to a position to be loaded into the feed tube'14.

`Within the charging tube 13 is a feed tube 14, a feed screw 30 and a feed rod 31 shownl in details in Fig. 15 of the drawings. The

feed tube 14 is provided with a channel or slot 32 extending the length thereof to provide a slot or opening at one side of the tube 14. The lower endlportions of the charging tube 13 and the feeding tube 14 extend into the cupped portion 12 and are rotatable 1n said cupped portion, or, if desired, the cupped portion 12 may be secured to the lower end of the charging tube 13 and have its bearing portion 11 rotatable in the socketed portion 10 of the plug 9. rllhe channel 32 is designed for guiding and holding a lead 33 being fed to the tip 7 of the pencil. lfn Fig. 1 is shown the position of the lead following a previously fed portion 34 extending through the axial bore or passage of the tip 7. rFlic tube '14 is capable of angular movement or rotation within the charging tube 13. lNithin-the channel 32 is longitudinally movable the feed rod 31, the lower end of which is provided with a laterally bent end portion which acts both as the feeding end for moving the lead longitudinally in the channel and also 'as a means for rotating thc tube 14 in the charging tube 13 when it is desired to bring the slot or the channel 32 in registry or opposite the slot 15 of the charging tube as shown in Fig. 11 of the drawings. At the other end of the rod 31, which extends within the. axial bore or passage of the screw 30 is provided a bent portion or crook 36 having a lead engaging or loading end 37 extending toward the forward end of the pencil. The screw 30 is provided with an op'en helical slot 38 in 11i/casca which operates the crook 36 for longitudinal movement of the rod 31 forwardly or rearwardly upon the rotation of the screw 30 in one direction or the other. The screw 30 is rotatably supported in the upper part 39 of the charging tube 13 with the lower end of the screw 30 normally bearing against the upper end of the feed tube 14 and the upper end of the screw 30 Vbeing secured in any suitable manner to a finger piece 40 by which the screw 30 and the finger piece 40 may be rotated by thefingers of the operator. Surrounding the upper part 39 of the charging tube 13 is provided a guide sleeve 41 having its lower end portion bearing against the top surface of the member 16 and its upper end portion provided with a tongue 42 which extends through a slot 43 formed in a flanged portion 44 at the upper end of the charging tube 13, all as is clearly shown in Fig. 13 of the drawings. vThe guide sleeve 41 is made of sheet metal and so shaped to provide an open channel o r slot 45 for the passage of the crook 36 and feed or loading end 37 of the rod 31 in one direction ofvmovement thereof, and has a return channel 46 for the return of the crook 36 and endportion 37 when moving in another direction, that is, when the rod 31 is being retracted or returned to starting position for feeding another lead. rllhe. upper end of the guide sleeve 41 bears against the flange 44 and the sleeve is capable of rotation'between said flange 44 and the cross head 16 to the extent hereinafter more fully explained.

The magazine shell 6 surrounds the guide sleeve 41 and this guide sleeve fits loosely and rotatably within the shell. 6, and this shell is screwed into and held stationary in the barrel 1. 1t is provided with a longitudinal slot 47 through `which leads may be loaded into the n'iagazinc, the spzicebetween the shell 6 and the sleeve 41 constituting the magazine space in which the leads are located. At one side of the slot 47 is an inwardly bent flange 48 which cooperates with a shoulder 49 forming a side portion of the channel 46 when the sleeve 41 is rotated in one direction as hereinafter more fully ex plained. See Fig. 7 of the drawings.

lExtending upwardly from the'flange 44 is a chamber 5() internally screw threaded for engagement to a threaded plug 51 having aflange 52 engaging the rear end of the barrel 1 and the coupling member 4. The finger piece 40 has a hub portion 53 rotatably mounted in the plug 51 and provided with a groove for receiving a thrust collar 54. It will be apparent that the finger piece 40 is rotatable in the plug 51 but cannot slide longitudinally'thereof by reason of the collar 54 locking it in place in the plug.

Within the chamber 5() is located a control member 55 having a longitudinally cut continued rotation of the screw 30 will cause' sector shaped slot 56 for providing contact faces

lor lshoulders

57 and 58 against which the bent portion 36 of the rod 31 lmay contact before and after reversal of the movement of the rod 31. The member is formed Awith a flange 59 having an arc shaped slot 60 for providing at the'ends of the slot,

shoulders

61 and 62 for engagement with one side or edge or the other of the tongue 42 formed on the upper end o f the guide sleeve 41. See Fig. 14 ofthe drawings.

The finger piece 40 may be socketed for the reception of an eraser 63 as shown in Figs. 1, 2 and 3 of the drawings.

The leads in the magazine may be any number from one to twelve. Thesleeve 41 together with the cooperatingparts such as the screw portion 30 andthe shell 6 are designed and arranged to position the leading lead 65 to belengagedY by the end 37 of the feeding rod 31 when moved downwardly or forwardl in the pencil. For this purpose the channel portion of the sleeve 41 is formed with a flange 66 capable of engaging with the leading lead 65 when the sleeve 41 is rotated in lclockwise direction as' viewed in Fig. 7 of the drawings. This rotation may be effected by the frictionalv engagement between the screw 30 which will'frictionally turn the sleeve portion 39 which in turn may frictionally turn the tubular portion of the sleeve 41 or positively by 'means of the edge 67 engaging with the edge 68 of the flange 66, as shown in Fig. 7 of the drawings. l he leading lead 65 will be held in position by its contact with a succeeding lead in series until the last lead 69 engages with the flange. 48 of the shell 6. If we assume that there are less leads than the full quota of the magazine, as for example if there be but seven leads instead of twelve leads, the

leading lead vwill then be that designatedv 30 may continue to rotate as the friction between it and the tube 39 is not such as' to prevent. it. It will thus be apparent that 70, the crook portion of the rod 31 also moves as an element of the `nit when it is moved from the dotted line position thereof designated by the reference character 71 in Fig. 7 of the drawings until it is brought to a stop opposite theupper end of the lead 70. If however, there isa full quota of leads in the magazine and as shown in Fig. 7 of the drawings, the leading lead 65 will be the lead engaged. In this case there will be practically no rotation, or very little rotation, until the flange 66 engages with the lead 65, and, the hook 37, when caused to move longitudinally by the continued rotation of the screw 30, will then engage with the upper end of the lead 65 to move it downwardly and longitudinally. From the above it will be apparent that for each lead of the magazine the amount of movement of the parts until the hook is brought into position opposite the upper end of the leading lead will be greater for each lead until the last lead 69 is reached when the feeding of that lead will empty the magazine. Assuming the parts to be in the relation shown in Figs. 1, 2, and 3 of the drawings, when the rod 31 is ready to .be fed downwardly to feed a lead 33 forwardly to the tip 7, the. operation is effected by a clockwise rotation of thefinger piece 40 which in turn rotates the screw with likewise rotation to cause therod 31 to be moved longitudinally forwardly. The lower end of the rod will engage with the rear end of the lead 33 and move the same longitudinally` toward the tip 7. At the 'same time the end 37 will engage one of the leads in the magazine, such as the' lead 65 if it be the leading lead or the lead if it be the leading lead of seven in the magazine, to feed it longitudinally forwardly so that this lead will move along the feeding slot 15 which at that time will be opposite the slot 45 of the sleeve 41, and through theV slot 17 until the lower end of the lead engages with the tapered or slanted portion 29 of the spring 23 when the spring will then be forced outwardly and the lead brought into the position shown in Fig. 5 of the drawings, the spring 23 acting to hold the lead in place against the outer surface of the feedingtube 14 as shown in Fig. 10 of the drawings. When the lead 33 is in fully'fedposition and the

lead

65 or 70 in loaded position as shown in Fig. 5 of the drawings, the crook 36 will' come to a stop by engagement with the upper vend of the feeding tube 14 when furthery longitudinal movement of the rod 31 is prevented. The finger piece is then rotated in an opposite direction or counter clockwise to retract the rod 31. Immediately upon the counter clockwise rotation of the screw 30 its frictional engagement with the tube portion 39 will cause the latter to turn with the screw and cause the opposite edge 72 thereof to move to and contact with the edge 68 of the fiange 66 so that the charging tube 13 and the sleeve 41 will be carried with the screw a unit until the shoulder 49 of the sleeve 41 contacts with the flange 48 when the sleeve 41 will come to a stop together with the tube 13. i

lt will, therefore, be seen that as the reverse'motion of the screw 30 started it first turns the hook or crook portion 36 of the rod with it, together with the tube 13 and the tube 14 until the` edge 72 engages with the iange edge 68 thus permitting the hook or crook portion 36 of the rod to pass from the lower end of the slot to the lower end of the channel 46, it being noted that the crook 36 was beneath the lower end of these two members as clearly shown in Fig. 5 of4 thel drawings. In going from channel 45 to 46, the crook 36 does not swing, but part 4l changes position so that the flange edge or lug 68 swings from the edge 67 on slot 15 to the opposite side of the slot when the finger piece 40 is rotated in counter-clockwise direction. This angular motion is limited by the slot 15 to substantially 30. When the members have come to a stop by reason of the engagement of the shoulder 49 against the flange 48 further turning of the screw in counter clockwise direction will cause the rod 31 to move rearwardly or be retracted and, .from the above, it will be apparent that `the crook 36 will move upwardly` through the channel 46 and not interfere with any of the leads in the magazine. At this time the leads in the magazine may be in a more or less loose condition. lt is only material that they be 'packed when the loading is made from the magazine.

Now as the lower end 37 of the crook leaves the channel 46 further turning of the screw will have a tendency to turn the crook toward the face or shoulder 58 of the control member .55, sce Fig. 6. Such turning will occur by reason of the crook being carried with the screw and the control member will also turn a given distance until the shoulder 62 is brought into contact with the right hand side of the tongue '42. 'lhis permits a turning movement of the rod 31 together with the bent end 35 and the feed tube 14 to .substantially 9() degrees from the position shown in Fig. 1() of the drawings 'to the position shown in Fig. 11 of the drawings, so that the slot 32 may be made to register with the slot 15 at which time the spring 23 will act automatically to load the lead 65 into the channel 32 of the feeding tube, the spring 23 then assuming the position it previously had asshown in Fig. 4 of the drawings. lt will be apparent from the above that'the loading' of the magazine lead 65 into the channel 32 in successive or following position to the fully fed lead therein occurs only at the fully retracted position of igroaaea the rod 31, since it is necessary that the lower end of the rod be cleared from the channel 32 before the magazine lead 65 be loaded therein.

The crook of the rod 31 will now have reached the upper end of the helical slot of the screw as clearly shown in Fig. 4 of the drawing. It is now necessary to reversely rotate the screw, as by a clockwise rotation, whereby the crook 36 together with the screw is carried toward the shoulder 57 of the control member 55 thus turning the latter until the shoulder 61 engages with the tongue 42. The turning of the crook 36 and rod 31 causes the end 35 of the rod to rotate tube 14 to bring the

slots

32 and 15 out 0f registry, or to the position shown in Figs. 8 and 9, of the drawings.'I At this iiistant the sleeve 39v by reason of the frictional engagement of it with the screw 3() will cause end 67 to engage end 68 and hence cause a turning of the sleeve'41 until the sleeve 41 comes into engagement with the vleading lead in the magazine.

lf the leads in the magazine are in loose condition they lwill be forced into a. series until the lead 6'9 engages with the flange 48 and then the leading lead will bring the rotation of the sleeve 41 to a stop. vIt will be noted that when the screw has been turned with the crook 36, the crook 36 will be moved from the position opposite the upper end of the channel 46 to the upper end of the channel 45, that is, when the crook has engaged with the face 57 of the member 55 at which time the crookis opposite the upper end of the channel 45 and ready to enter said channel to engage with the leading lead in the magazine to be fed as before. Continued rotation of the screw will effect the feeding of the lead loaded into the feeding. tube and also a feeding of another lead from the magazine under the spi-ing 23 as described at the be` ginning oi" the operation hereinbefore.

This operation may continue until the magazine is exhausted. lVhcn it. is desired to load the magazine, the coupling memberA vthe barrel 1 and the magazine shell together with the propelling mechanism including the

members

11 and 12 and the cross-head 16 are removed as a, unit. New leads may then be dropped into the slots 47 of the shell until the magazine space is filled with leads. The mechanism may then be replaced in the barrel by simply screw-threading the coupling member 4 upon the threaded portion 3 of the barrel. The assembly is thus very simple and easily carried' out,

4While l have described and upon -the drawings shown a particular embodiment of the invention, it is to be understood that the invention is not limited to the particular details, arrangement of partsand constructions shown and described, but that other lll() Lacasse Vmovable means for simultaneously feeding a lead into Writing position and an extra lead into position to be moved to follow the first mentioned lead after it has been fed.

2. ln a mechanical pencil a barrel having a tip and a magazine for non-aligned extra leads, means for simultaneously feeding a lead to project through said tip and an eXtra lead into position to be moved to follow the rst mentioned lead after it has been fed.

8. ln a mechanical pencil a barrel having a tip and a magazine for non-aligned extra leads, means for propelling a lead into Writing position through said tip, and means operated by said first mentioned means to move an eXtra lead longitudinally inY said barrel to follow the first mentioned lead vvhen fed.

t. ln a mechanical pencil a barrel having a tip and a magazine for extra leads, a lead 'guiding tube, and means for simultaneously propelling a lead through said tube and for longitudinally moving an extra lead which is outside of said tube.

5. ln a mechanical pencil having a barrel,

. a tip and a magazine for leads, feeding mechanism comprising means for guidingl a lead to said tip during feeding operation, a

movable feeding element for feeding said lead in said guiding means and having a loading part for moving a lead from said magazine to a position for loading into the guiding means, and means for .moving said second mentioned -lead into said guiding means successive to said rst mentioned lead `when in fully fed position.

6. lin a mechanical pencil having a barrel,

la tip and a magazine for leads, feeding -mechan1sm comprising a lead guide provided With a lateral opening, means for feeding a lead in said gulde to said tip and for feeding a lead from said magazine to a position opposite said lateral opening, and means for moving said second mentioned lead through said lateral opening into said lead guide when said iirst mentioned lead is' `fully fed.

7. lin a mechanical pencil having a barrel, a tip and a magazine for leads, feeding mechanism comprising a lead guide provided with a lateral opening, means for feeding a lead in said guide to said tip and for feeding a lead from said magazine to a position opposite said lateral opening, means normally closin said lateral opening, means actuated by sai feeding means for opening said closing means when said first mentioned lead has reached fully fed position, and means for moving said second mentioned lead into said guide to follow said first mentioned lead.

8. lin a mechanical pencil having a barrel, a tip and a magazine for leads, feeding mechanism comprising a lead guide provided vvith a lateral opening, means for feeding a lead from said magazine to a position opposite said lateral opening, means normally closing said lateral opening, means actuated by said feeding means for opening said closing means when said first mentioned lead has reached fully fed position, and a resilient means for automatically moving said second mentioned lead into said guide behind the rst mentioned lead when said closing means is opened and `when said first mentioned lead is in fully fed position.

9. ln a mechanical pencil having a barrel,

a tip and a magazine for leads,l feeding mechanism comprising afeeding member having a plurality of lead engaging portions, one of said portions acting tdfeed aalead to said tip and another of said portions for feeding a lead from said magazine to a position to follow the first mentioned lead when in fully fed position.

10. ln a mechanical pencil having a` bar- I rel, a; tip and a magazine for leads, feeding mechafpism .comprising a feed guide for guiding leads being fed to the tip, a movable feed rod having one end thereof arranged to engage said lead to feed the same andfhaving the other end thereof shaped to engage a lead in the magazine to move said magazine lead therefrom to a position to be loaded into said guide, and means for moving said magazine lead into said guide when the irst leadhas been fed into fully fed position.

for reciprocating said rod, said lrod having acrook `at one end thereof for engaging a lead in said magazine and moving it from the magazine when the rod is feeding a lead to the tip whereby the magazine lead may succeed the lead fed to the tip.

13. In a mechanical pencil having a barrel,

a tip and a magazine 'for leads, means for means for proguiding a lead to said tip,

means to pelling said lead inn said guiding said tip, said guiding means having a loadp ing slot, means for normally closing said slot, said propelling means cooperating with said closing means for opening said slot When said propellingy means has been retracted, and means for moving a magazine lead through said slot into said guiding means behind lsaid first mentioned lead.

14:. lln a mechanical pencil having a barrel, a tip and a magazine for leads, means forguiding a lead to said tip, a reciprocable means for propelling said lead in said guiding means to said tip when said reciprocable means is moved in one direction, said uiding means having a loading slot, means for normally closing said lslot, said propelling means having means for moving a lead from said magazine to a position opposite said slot and closing means, and means actuated by said propelling means at the end of its reverse reciprocation to open ysaid closing means to permit said second mentioned lead to enter through said slot into said guiding means in successive position to the first mentioned lead when in fully fed position.

15. 1n a mechanical pencil having a barrel, a tip and a magazine for leads, means for guiding a lead to said tip, a reciprocable means for propelling said lead in said guiding means to said tip when said reciprocable means is moved in one direction, said guiding means having a loading slot, means for normally7 closing said slot, said propelling means having means for moving a lead from said magazine to a position opposite said slot and closing means, means actuated by said propelling means at the end of its reverse reciprocation to open .said closing means, and means for automatically moving said second mentioned lead through said slot into said guiding means in position to follow the first mentioned lead when in fully fed position.

16.1n a mechanical pencil having a barrel, a tip and a magazine for leads, feeding mechanism for the leads comprising a slotted feeding tube, a slotted charging tube surrounding said feeding tube, said tubes being relatively rotatable to permit said slots to come into registry, said slots being normally out of registry whereby the charging tube normally closes theslot of the feeding tube, lneans for holding a magazine lead opposite the slot of the charging tube and capable of moving said leadinto said feeding tube when said slots are in registry, and means for moving said tubes for registering of said slots.

17. In a mechanical pencil having a barrel, a tip and a magazine for leads, feeding mechanism for the leads comprising a slotted feeding tube, a slotted charging tube surrounding said feeding tube, said tubes being relatively rotatable to permit said slots to come into registry, said slots being i monaca normally out of registry whereby the charging tube normally closes the slot of the feeding tube, means for holding a magazine lead opposite the slot of the charging tube and capable of moving said lead into said feeding tube when said slots are in registry, lead propelling means movable in one direction for feeding a lead in said .feeding tube to said tip and a lead from said magazine to position opposite thel slot in said charging tube, and movable in an opposite direction to move the tubes for registry of the slots whereby the magazine lead may enter the feeding tube in following position to the lead previously fed in the feeding tube.

18. 1n a mechanical pencil having abarrel, a tipand a magazine for leads, vfeeding mechanism ineludinga reciprocable feeding rod movable in one direction for feeding a lead to said tip and a lead from said magazine to follow the first mentioned lead, means for rotatably supporting said rod, means for guiding the first mentioned lead to the tip, means normallyclosing said guiding means and operated to open upon the rotation of said rod in one direction of rotation and to close said guiding means when rotated in another direction, and means for moving the 'magazine lead into the guiding means When the closing means is in open position.

19. 1n a mechanical pencil, a barrel having a tip Yand a magazine for extra leads, and a lead propeller formed to simultaneously and longitudinally propel two non-alining leads in said barrel. 1 f

20. 1n a mechanical pencil, a barrel having a tip and an extra lead magazine, a lead guide tube, a propeller for moving a lead through said tube into Writing position, and means associated with said propeller for moving an extra lead longitudinally from said magazine.

21. A mechanical pencil having a barrel provided with a tip and provided with a magazine at its rear end adapted to store unaligned extra leads, said pencil having ashiftable exterior part and means within the barrel actuated by movement of said part for positively feeding the leads in suc; cession from the magazine to and through the tip.

22. A vmechanical pencil having a barrel formed with a tip and provided with a magazine at its rear-.end for holding extra unaligried leads, and propeller means for automatically feeding the leads in predetermined sequence from the magazine to and through the tip.

23. A mechanical pencil having .a barrel provided with a tip at its front end and a magazine in its opposite end adapted to store a row of unalignedextra "leads, said pencil having manually operable means for magazine at its opposite end adapted to store extra leads, said pencil having means operable'positively to feed said leads in succession from the magazine substantially transversely of said barrel and forwardly tov and through said tip.

25. A mechanical pencil having a barrel provided With means forming a longitudinal and axial lead passage terminating in a tip,

and having a magazine adapted to store extra leads, means for feeding. a lead through said tip and supplemental feeding means Vadapted'to be moved into any one ofa plurality of positions extending about' said lead passage and adapted to be moved parallel to said passage to feed from the magazine a subsequent lead to said tip passage.

26. A mechanical pencil having a barrel provided with a tip and a magazinefor.

holding a row. of unaligned leads, a feed member, means to shift said member into position opposite an end of the foremost lead of the row and .to shift said member in the direction of said end to move the lead forwardly. l

27. A mechanical pencil .having a barrel provided with a tip and a magazine for a row of leads, lead feedin means, mechanism adapted to move the fee ing means a predelead.

' to hold a plurality of leads, a feed member,

termined distance to a position opposite the end of a lead in the magazine, and devices controlled by the number of leads in the magazine-,for determining such distance and means for feeding said lead feeding means toward the end of the lead to propel said means to 'shift said member transversely of the axes of said leads to l'position it oppositek the end of a lead and to shift ysaid member in the direction of the end of said lead to propel it. f

v 30. A mechanical pencil having a barrel.

provided Withit tip and afmagazine forming a lead-.space concentrically about the axis of theA pencil, a feed member, means to shift said me ber across said space -into any dev fsired osition and opposite the end of a lead in sai chamber and means to feed said member. toward the lead and to'propel the lead forwardly toward the tip.

31. A mechanical pencil having a barrel formed with a tip and an arcuately shaped magazine disposed concentrically about the axis of the pencil and adapted to receive an arcuate row of leads, a lead feeding member and means to selectively move saidmembei' varying distances in an arcuate path into position immediately opposite the end of the foremost lead of the row and to cause said member to push said lead forwardly toward the tip.

3 2. A mechanical pencil having a barrel formed with an axial passage terminating in a tip, a feed rod shiftable through said passage, a magazine for extra. leads concentrically disposed about the axis of said pas sage, lead feeding means carried by said feed rod and means to move said lead feeding means transversely of said magazine into position opposite the end of a lead, and mechanism to move said lead feeding means substantially transversely to its iirst path of movement to feed said lead forwardly.

33. A mechanical pencil having a barrel formed with a t'ip, a slotted charging tube extending axially of the barrel and communicating with the' tip, a slotted feed tube and hollow. feed screw mounted within the charging tube, a feed rod Within the screw and feed tube, said rod having a lateral crook at/its upper end, a 4guide sleeve surrounding the upper portion of said charging tube, said sleeve having a slot and a channel, a slotted shell surrounding said guide sleeve and spaced therefrom to provide a lead magazine, and 'control' devices, for rotating said guide sleeve, charging tube, feed screw and feed rod together or to cause their relative rotation-to propel a lead from the magazine to the feed tuber 34. A mechanical pencil having a' barrel provided with a tip and a magazine adapted to holda row of unaligned leads, a feed member shiftableinto position opposite the lend vof any one of said leads when occupying nthe .foremost positioni'in the row in the magazine and means for moving said member in the direction of the end of the lead to propel it.

35, A mechanical pencil having a barrel and a tip through which the leads are fed, a magazine for storing leads within the barrel, a feed rod for advancing leads through the tip, said rod having la, supplemental lead feeding portion for'advancing a lead through the magazine, said portion being rotatable about the axis of thearod.

' 36.A pencil having a barrel provided with a magazine for extra leads, and havin a tip, a rod .in said barrel having two lea contacting portions and means for shifting saidrod for simultaneously feeding a lead through the tip and through-the magazine.

37. A pencil having a barrel provided with a tip and a magazine for extra leads, a rotatable feed screw, a rod and mea-ns'forfcausing said rod to rot-ate with said screw or to move longitudinally thereof whereby to feed leads from the magazine toward the tip.

38. A mechanical pencil having a barrel provided with tip and a magazine for extra leads, a feed screw, a lead feed rod actuated by said screw and having a crook, a slotted charging tube surrounding said screw, and a slotted guide-sleeve surrounding said tube, said screw tube and sleeve having frictional driving faces and having portions to engage said crook for causing said feed rod to ro'- tate with said screw or to travel longitudinally thereof to feed a lead from said magazine to said tip.

39. A mechanical pencil having a barrel provided with a tip, a partition extending across said barrel intermediate its ends and forming a lead magazine on that side of the partition removed from the tip, a feed rod adapted to move axially through said partition to feed leads to and through the tip,

said partition having an eccentric feed slot therethrough, and means for feeding a succession of leads from the magazine through said eccentric slot.

40. A mechanical pencil having a barrel formed with a tip, a partition in said barrel forming a lead magazine, said partition having an axial opening in line with the lead passage of the tip, a plunger operable in said axial opening of said partition, said partition having a feed slot and means for CERTIFICATE rOli Patent No. 1, 705, 865.

feeding a succession of leads from the magazine through said feed slot of the partition and to said tip,

4:1. A mechanical pencil having a barrel formed with a tip, a rotatable partition in said barrel providing a lead magazine, said partition having an axial opening in line with the lead passage of the tip, a rod oper ating in said axial opening of the partition, said partition having a radial feed slot, means for rotating said partition about its axis and means for feeding a lead through the slot of the partition and to the tip.

42. A mechanical pencil having a barrel formed with a tip and provided with a longitudinally slotted charging tube and with an axially apertured disc forming a transverse partition for the intermediate portion of the barrel, said charging tube terminating at its upper end in an axially apertured cupshaped 'member whereby to form a lead magazine between thedisc and the cupshaped member, a screw and plunger rotatably mounted within the tube and passing through the axial openings in said disc and cup-shaped member, said disc and cupzine through the slot in the partition and F to the feeding tube.

In' witness whereof, I hereunto subscribe my name to this specification.

HERBERT W. JOHNSON.

CORRECTION.

Granted March 19, 19279, to

HERBERT W. JOHNSON.

It is hereby certified that error appears in the printed specification of the 8, after the word "lead" insert the Words above numbered patent requiring correctionfas follows: Page 5, line 74, claim and comma "in said guide ,to ysmid tip and for feeding alead,"; and that'the said Letters PatentA should be read with this correction therein that the same may conform to the' record of the case in f the Patent Office.

signed and mnd this 18th 'any of June, A. D. 1929.

(Seel) M. J. Moore, Acting Commissioner of Patents.

shaped member having feed slots therein, a-

CERTIFICATE OF CORRECTION.

Patent No. 1,705, 865. Granted March 19, 1929, to

HERBERT W. JOHNSON.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5, line 74, claim 8, after the word "lead" insert the words and comma "in said guide to said tip and for feeding a lead, and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Fatent Office.

Signed and sealed this 18th day of June, A. D. 1929.

M. J. Moore, (Seal) Acting Commissioner of Patents.