US1937779A - Lead pencil - Google Patents

Description

Dec. 5, 1933. c. F. NORLIN LEA-D PENCIL Original Filed Sept. 19, 1924 2 Sheets-Sheet 1 Dec. 5, 1933. c, F. NQRLIN 1,937,779

LEAD PENCIL Original Filed sept. 19, 1924 2 Sheets-Sheet 2 Patented 5,v 1,933

"UNITEDSTATES PATENT .OFFICE 1,931,179- niian'ranon. Clarence F. Norlin, Chicago, Ill.

Reliled for abandoned application No. 738,617, September 19, 1924. Thisapplication April 8, 1933. Serial No. 665,147

from the following description.

Referring to the accompanying drawings;-- Figure 1 is a view in longitudinal sectional elevation of a pencil embodying my improvements,

' the lead-feeding means being shown in the extremeposition occupied by them in the feeding 1 position. Figure 2 is a view in elevation, with certain parts broken away, ofa portion of the lead feeding-means. Figure 3 is a; view like Fig. ure 1, with certain parts broken away of the structure therein illustrated. showing the lead- Ieeding means in an intermediate position occupied thereby in the operation of recharging the tip of the pencil with a lead. Figure 4 is a view' like Fig. 3 showing the lead-feeding means in the extreme'position occupied by them in the operation of charging a lead intosaid tip. Figure 5 isa viewin side elevation of a detail oithe pencil. Figure 6 is a similar view of the opposite endaof the pencil. Figure 7 is a section taken at the line 7 on Fig. 4 and viewed in the direction of the arrow. Figure 8 is a cross-sectional view taken through the compartment of the bodyfof the pencil in which the lead magazine is located, the said magazine and the spring-equippe cover therefor, being omitted; and Figure 9, a sectional view through the magazine showing three leads therein as represented in Fig. 4.

The body of the pencil and represented at 10, is in the form of a shell 11 open at one end and provided at its opposite end with a tip portion 12 containing a bore 13 extending longitudinally and centrally therethrough, the tip 12 being 01 tapered form as is common in magazine lead pencils. The space provided within the-shell 11 the particular construction shown is in the form relatively, ot a long and narrow box-like structure comprising the side-walls .20, endwails 21 will be in alignment and bottom wall 22. The width of the storage space provided in the magazine 19 and represented at 23 is slightly greater than the diameter of the leads to housed in the pencil and represented at 24, so that leads introduced into the magazine, are arranged in a single series, but as will be understood it is not-necessary, so far as certain features of my invention are 0Ol1-'- cerned, to provide a magazine oi such form that the leads will be held in a single series as stated. The end walls 21 of the magazine are apertured, as represented at 25, in alignment with the bore ,13 and the aperture 18 in the disk 16, the apertures 25 extending flush with the inner surface of the bottom-wall- 22 of the magazine, as shown, 7' wherebya lead lying against this bottom wall with the bore 13 and the aperture 18. The magazine referred to is shown as held in position by fitting into recesses 26 and 27 formed in the opposing faces of the disk 16 and 7 the end-wall at the opposite end of the compartment 14, as represented, the side walls of the magazine 19 being shown as extending short of the circumference of the body 10, means are preferably provided for constantly urging the 30 leads 24 toward the bottom-wall 22 of the magazin'e, these means, in the particular construction shown, comprising a spri ng-device 28 carried by a bar 29 located at an opening 30 in the shell 11 prises a leaf-spring section 33 rigidly secured at one end to the cover bar 29 and rigidly secured at its deflected free end with a reversely-bent leaf-spring section 34, the connection of the sec-' tion 33 with the section 34, being between the ends of the latter. The arrangement just de 1 scribed is such that the deflected portions of the leaf-spring 34 bear against the side of the ad- ..iacent one of the leads 24 and serve to force all of the leads in a direction toward'the bottom wall 22 of the magazine.

The means for feeding the leads in succession into thetip of the pencil, comprise a feed-rod 35 disposed "concentrically with. the shell 11 and adapted to be movedthrou'gh. the aperture 18 in the an: 16, the openingsdn the end-walls 0! 11 the magazine and the bore 13. The rear end of the feed-rod presents an enlarged cylindrical in the end-wall 39 of a tube 40, the outer end of which latter is provided with a head 41 through the medium of which this tube, together with the feed-rod, is adapted to be rotated, the section 36 of the rod carrying a crosswise-extending pin 42 which extends at its opposite ends into, and is slidable in, diametrically opposed slots 43 located in the side-wall of the tubeand extending lengthwise of the later.. It may be here stated that a coil-spring 44 surrounds the portion 36 of the feed-rod and is confined between the endwall 39 of the tube 40 and the pin 42, this spring tending to move the feed-rod to the left in the tube 40 to the position shown in Fig. 4. Surrounding the tube 40 is another tube 45 in which the tube 40 is rotatable, these two tubes being held against relative lengthwisemovement as for example by means of the head 46 of tube 45 which extends into an angular groove 40A in the periphery of the tube 40. The tube 45 is provided with a pin 47 slidable croswise of this tube in an open-' ing 48 therein, into andout of a position in which ltextends into the spiral groove 37 in the feedrod, the outer end of this pin being carried by the free end of a leaf-spring 49 secured at its front end, as represented at 50, to the outer surface of the forward end of the tube 45 and extending lengthwise of the latter. The spring 49 functions to yieldably hold the pin 47 in the grove 37, to effect lengthwise movement of the feed-rod when the latter is rotated, by rotating the head 41.. In the particular construction shown, it is desired that, in the operation of charging a new lead into the tip of the pencil, the pin 47 be withdrawn, preferably automatically, from the groove 37, and to accomplish this I provide, on a ring 51 rigidly mounted in the rear end portion of the shell 11, and through which the tube 45 slides, an annular forwardly-inclined surface 52 which extends into the path of movement of the rear and 49A of the spring 49, which projects rearwardly beyond the pin 47 and serves, when the parts of the structure are moved to the position in Fig. 4, to cam the spring 49 and the pin 4'7 thereon, to the position shown in this figure in which the pin is withdrawn from the spiral groove 37.

Provision is also preferably made for releasably locking the head 46 to the shell 11, these means,

in the arrangement shown, involving the grooving, as indicated at 53, of the forward face of the head 46 to receive the rear end of shell 11, and the provision in' the head 46 of diametrically opposed pins 54 which extend crosswise through these grooves and are adapted to enter bayonet, slots 55 in the wall of shell 11, when the parts are assembled to the position shown in Fig.1.

ter with the portions of the bayonet-slots 55 which extend lengthwise of the pencil, and thereupon slides this head, and with it the tube 45 and the parts carried thereby and. 3 H1? tube the lead magazine.

40 and the feed rod 35, the engagement of the sliding pin 47 with the spiral groove 37 being "undisturbed, to the position shown in Fig. 3, in which position the feed-rod 35 is moved to a position in which its forward extremity extends substantially flush with the rear end-wall of the tip of the pencil. Further movements of the parts just described to the left in Fig. 3, causes the portion 49A of the leaf spring 49, to engage, and ride upon, the inclined surface 52, whereupon the pin 47 is withdrawn from the spiral grove 37, thus relieving the restraint on the coil spring 44, (the latter being in compressed condition during the operation stated), whereupon this spring rapidly shifts the feed-rod 35 to the left in Fig. 3 to the position shown in Fig. 4 in which position the forward end of the feed-rod is withdrawn to a position in which it extends wholly exteriorly of with the feed-rod thus withdrawn from the magazine. the spring 28 shifts all of the leads toward the bottom wall 22 of the magazine, thereby positioning the innermost lead in line with the bore 13 in the tip and the feed-rod 35. The operator then pushes forwardly on. the head 46 with the result of moving the tubes 40 and 45, as a unit to the right in Fig. 4 to the position shown in Fig. 1, whereupon the operator rotates the head referred to, to a position in which it interlocks with the shell at the bayonetslots therein, In the operation of pushing the head 46 forwardly as stated, the leafspring 49 disengages from the cam surfaces 52 and the pin 47 again enters the spiral groove 37, but as the spring 44 is in the extended position referred to, this pin enters the forward end of the spiral groove 37. In thus manipulating the parts,

the feed-rod 35 moves forwardly and pushes the the feed-rod 35, to rotate in the tube 45 which rotation, due to the fact that the pin 47 extends into the spiral groove 37, causes the feed-rod 35 to move forwardly to feed the lead out through the tip, the spring 44 becoming compressed in this operation.

It will be understood from the foregoing description that a pencil-constructed in accordance with my invention, while providing positive means for feeding a lead, as desired, into position for use, as the lead wears away, permits of ready recharging of the tip of the pencil with a new lead by an operation which may be quickly performed.

While I have illustrated and described a particular construction embodying my invention, I do not wish to be understood as intending to limit it thereto as the same may be variously modified and altered without departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent,'is:

1. In a magazine pencil, the combination of member containing a passage in which the leads, when positioned for use, extend, said member containing a recess one portion of which is continuous with said passage and which extends laterally through the side of the pencil to form a magazine, a cover for said recess, spring means carried by said cover and yieldingly pressing leads in, the magazine into substantial alinement with said passage and means for feeding the noa'mva leads, in succession, from said magazine into said 2. In a lead pencil, the combination of a member containing a passage in which the lead, when positioned for use, extends, the structure presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means comprising an element movable lengthwise of the pencil and adapted to engage the lead to feed it into said passage, yieldable means operating to move said element in a direction away'fromsaid passage, and in the lead-feeding movement of said element becoming tensicned,

and releasable means for retaining said element against movement, under the action ofsaid yieldable means, in the forwardly projected position of said element.

3. In a lead pencil,.the combination of a member containing a passage in which the lead, when I engagement at, said portions, and yieldable means in opposition to which said. first-named u element moves in the lead-feedinginovement thereof.

4. In a lead pencil, the combination of a member containing a passage in which the lead, when positioned for. use, extends, the structure presenting aspace to. receive a lead in substantial alinement with said passage, and lead-feeding means comprising an element mounted to rotate and'move lengthwise of the pencil and having a spiral gr'oove on its periphery,'a pin stationarily mounted relative to said element and adapted to be moved into'and out of said groove, and yieldable means in opposition to which said element moves lengthwise in the lead-feeding movement of said' element. 5. In a lead penciL-the combination of amember containing a e in which the lead, when positioned for use, extends, the structure pre-- senting a space to receive a lead in substantial alinement with said' and lead-feeding means comprising elements movable together in a direction lengthwise of the pencil; onev of said elements being movable relative to the other thereof in a direction lengthwiselhereof, yieldable means operating to move one of.,said elements in a direction away-from said passage and in the movement thereof to forwardly projected position, becoming tensioned. and releasable means for restraining said lastre'ferred-to element against movement under the action of said yieldable means, in its forwardly projected position. g

6. In a lead pencil, the combination of a member containing a passage in which the lead,

when positioned for'use, extends, the structure presenting a space to receive a leadin substantial alinement with said passage, and lead-feeding means comprising elements movable together in a direction lengthwise of the pencil, one of said J elements being adapted to rotate and move lengthwise of the other of said elements, a'third element stationarlly mounted relative to said rotatable element, said rotatable element and said third element having interengagins p rtions which operate to cause said rotatable element to move lengthwise, in the lead-feeding direction,

when rotated, said interengaging portions being relatively movable into and out of engagement, and yieldable means operating to move said rotatable element in a direction away to forwardly projected position becoming tensioned. I v

7. In a lead pencil, the combination of a member containing apassage in which the lead, when positioned for use, extends, the structure presenting a space to receive a lead insubstantial alinement with said passage, and lead-feeding means comprising elements movable together in a direction lengthwise of the'pencil, one of said elements being mounted to'rotate and move lengthwise relative to the other thereof and having a spiral groove in its periphery, a pin stationarily mounted relative to said rotatable element and adapted to be moved into and out of said groove, and yieldable means operating to move said rotatable element in a. direction away from said passage and in the movement thereof to forwardly projected position becoming tensioned.

8. In a lead pencil, the combination of a member containing a passage in which the lead, when positioned for use, extends, the structure presenting a space to receivea lead in substantial alinement with said passage, and lead-feeding.

means comprising elements movable together in a direction lengthwise of the pencil, one of said elements being movable relative to the other thereof in a direction lengthwise thereof, yieldable means operating to move one of said elements in a direction away from said passage and in the movement thereof to.forwardly projected positionbecoming tensioned, releasable means for restraining said last-referred-to element against movement under the action of said yieldable means, in. its forwardly projected position, and means operating automatically to release said releasable means in the relative movement of said elements to a predetermined position.

from said passage and in the movement thereof 9. In a lead pencil, the combination of a member containing a passage in which the lead, when positioned for use extends, therstructure presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means comprising elements movable together in a direction lengthwise oi. the pencil, one of said elements being adapted to rotateand move lengthwiseof-the other of said elements, a third element staticnarily mounted relative to said rotatable element, said rotatable element and said third elementhaving inter-engaging portionswhich operate to cause said rotatable element to move lengthwise, in the lead-feeding direction, when rotated,. said interengaging portions being relatively movable into and out of engagement, yieldable means operating to move said rotatable element in a direction away from said passage and the movement thereof to forwardly proiected, position. becoming tensioned, and means operating automatically to disengage said pertions inthe movement of said flrst-referred-to elements lengthwise of the pencil to a predetermined position.

10. In a leadpencil, the combination of a mempositioned for use, extends, the structure presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means comprising elements movable together in a direcber containing a passage in which the lead, when tion lengthwise of the pencil, one of said elements being mounted to rotate and move lengthwise relative to the other thereof and having a spiral groove in its periphery, a pin stationarily mounted relative to said rotatable element and adapted to be moved into and out of said groove, yieldable means' operating to move said rotatable element in a direction away from said passage and in the movement thereof to forwardly projected position becoming tensioned, and means operating automatically to move said pin out of engagement with said groove in the movement of said elements lengthwise of the pencil to a predetermined position. 11. In a lead pencil, the combination of a member containing a passage in which the lead, when positioned for use, extends, the structure presenting a space toreceive a lead in substantial alinement with said passage, and lead-feeding means comprising telescope members, the inner one of which is rotatable relative to the outer one of said members, a lead-feeding. rod for moving the lead in said passage, a pin and slot connection between said rod and the rotatable one of said members,

' rod.

whereby said rod is adapted to be rotated, by rotation of said rotatable member and is permitted to move lengthwise of the latter, a spring tending to hold said rod in retracted position, and means on said rod and the other one of said. members for causing said rod to be advanced, against the action of saidspring, when said rotatable member is rotated, said means comprising a part which is carried by the other of said members and operatively engages said rod and is releasable to permit said spring, tomove said rod on said rotatable member, in a direction to retract said 12. In a lead pencil, the combination of a member containing a passage in which the lead, when positioned for use, extends, the structure presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means comprising telescoped members, the inner one of which is rotatable relative to the outer one of said members, a lead-feeding rod for moving the lead in said passage, a pin and slot connection between said rod and the rotatable one of said members, whereby said rod is adapted to be rotated by rotation of said rotatable member and is permitted to move lengthwise of the latter, a spring tending to hold said rod in retracted position, said rodwontaininga spiral groove in its periphery, and a pin carried by the other one of said members and movableinto and out of a position in which it extends into said groove.

ing a space to receive a lead in substantial'alinement with said passage, and lead-feeding means comprising telescoped members,.the inner one of which is rotatable relative to the outer one of said members, a lead-feeding rod for moving the lead in said passage, a pin and slot connection between saidrod and the rotatable one of said members, whereby said rod is adapted to be rotattion in which it extends into said groove, and

means,-'operating automatically upon the movement of said memberstogether towardretracted' position, to disengage said pin from said groove.

14. In a lead pencil, the combination of a member containing a passage in which the lead, when positionedfor use, extends, the structure presenting a space to receive a lead insubstantial alinement with said passage, and lead-feeding means comprising telescoping tubes, the inner one of which is rotatable in the other of said tubes, said inner tube containing a guide slot extending lengthwise thereof, a lead-forcing rod slidably mounted to move lengthwise in the inner one of said tubes, 9. pin on said rod extending into said guide slot, a spring operatively engaging said rod and tending to move the latter to retracted position, said rod containing .a spiral groove in its periphery, the outer one of said tubes containing an opening in its side wall, a spring device carried by said outer tube and having a part which extends through said opening and into said spiral groove, and a member stationarily supported relative to said tubes and adapted to be engaged by said spring device, to withdraw said projection from said groove, upon the movement of said tubes to retracted position.

15. In alead pencil, the combination of a member containing a passage in which the lead, when positioned for use, extends, the structure presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means comprising an element movable lengthwise of the pencil, a second element movable lengthwise of the pencil and adapted for lengthwise movement relative to said first-named element and adapted to be rotated, a third element stationarily mounted relative to saidsecond element, said element and said third element having interengaging portions which operate to cause said second element to move lengthwise, in the leadfeeding direction, when rotated, said interengagpositioned, for use, extends, the structure presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means comprising an element movable lengthwise of the pencil, a second element movable lengthwise of the pencil and adapted for lengthwise movement relative to said first-named element and adapted to be rotated, said second element having a spiral groove in itsperiphery, a pin stationarily mounted relative to. said second element and adapted to be moved into and out of said groove, and yieldable means engaging said first-named and said second element and operating to move said second element in a direction away from said passage and in the movement thereof to forwardly projected position becoming tensioned.

. 17. In a lead pencil, the combination of a member containing a passage in which the lead, when positioned for use, extends, the structln'e presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means -comprising an element movable lengthwise of the pencil, a second element movable lengthwise of the pencil and adapted for lengthwise movement relative to said firstnamed element and adapted to be. rotated, a third 15 element stationarily mounted relative to said second element, said second element and said third element having interengaging. Portions which operate to cause said second element to move lengthwise, in the lead-feeding direction, when rotated, said interengaging portions bein 1 relatively movable into and out of engagement,

a predetermined position.

18. In a lead pencil, the combination of a member containing a passage in which the lead, when positionedv for use, extends, the structure presenting a space to receive a lead in substantial alinement with saidpassage, and lead-feedingymeans comprising anelement movable together lengthwise of the pencil, a second element movable lengthwise of the pencil and adapted for lengthwise movement relative to said first named element and adapted to be rotated, said second element having a spiral groove in its pe riphery, a pin stationarily mounted relative to said second element and adapted to be moved into and out of said groove, yieldable means engaging said first-named element and said second element and operating to move said second element in a direction away from said passage and in the movement thereof to forwardly projected position becoming tensioned, and means operating automatically to 'niove said pin out of engagement with said groove in the relative movement of said first-named element and said Y second element to -a predetermined position;

19. In a lead pencil, the combination of a member containing a passage in which the lead, when positioned for use, extends, the structure presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means comprising members operatively engaged to move together lengthwise of the pencil, one of said members being rotatable relative to the other thereof, a lead-feeding rod for moving the lead in said passage, a pin and slot connection between said rod and the rotatable one of said members, whereby said rod is adapted to be rotated by rotation of said rotatable member and is permitted to move lengthwise of the latter, a spring tending to hold said rod in retracted position, and means on said rod and the other one of said members for causing said rod to be ad- 'vanced, against the action of said spring, when said rotatable member is rotated, said means comprising apart which is carried by the other of said members and operatively engages said rod and is releasable to permit said spring, to move said rod on said rotatable member, in a direction to retract said rod.

20. In a lead pencil, the combination of a member. containing a passage in which the lead, when positioned for use, extends, the structure presenting a space to receive a lead in substantial alinement with said passage, and lead-feeding means comprising a rotatable element movable lengthwise of the pencil, a second, rotatable, element movable lengthwise of the pencil and adapted for lengthwise movement relative to said first-named element, means whereby said second element is rotated by said first-named element, a third element stationarily mounted relative to said rotatable element, said rotatable element and said third element having interengaging portions which operate to cause said rotatable element to move lengthwise, in the leadfeeding direction, when rotated, said interengaging portions being relatively movable into and out of engagement, and yieldable means operat-- 'rso

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