US1472969A - Pencil - Google Patents

Description

Nov. 6, 1923. 1,472,969

' H. L. FISCHER PENCIL Filed Sept. 17, 1920 Fly 7 Fatented Nov. 6, 1923.

HOWARD L. FISCHER, OF ST. PAUL, MINNESOTA, ASSIGNOE TO BROWN & BIGELOW,

OF ST. PAUL, MINNESOTA, A CORPOBATIONOF INNESOTA.

PEN GIL.

Application filed September 17, 1920. Serial No. 410,879.

To all whom it may concern:

Be it known that I, HOWARD L. FISCHER,

a citizen of the United States of America, residing at St. Paul, county of Ramsey, and State of Minnesota, have invented certain new and. useful Improvements in Pencils, of which the following is a specification.

My invention relates to pencils the primary object of which is to provide means for supporting an eraser in amanner so that the pencil can be readily used with or without the eraser without departing from the general artistic or attractive appearance'of' the'pencil. W

In many instances it is very desirable to have an eraser associated with a mechanical pencil particularly where the construction of the same is such that the marking lead requires no sharpening, and the pencil is constructed to wear for an indefinite period becoming an indispensable utility to the same extent as a fountain pen after one has become accustomed to the use of the same.

Some people using a pencil of this nature would prefer to have it without an eraser, while others desire the eraser, particularly if it is positioned or associated with the pencil so that it can be readily used when needed.

The invention further provides means associated with the eraser for attaching it in a manner to hold it rigidly for use to a pencil or other utility where an eraser is required.

In the drawings forming a part of this specification:

Figure 1 illustrates my pencil with an eraser attached thereto.

Figure 2 is an enlarged lon 'tudinal cross section, a portion of the penci being broken awa Figure 3 is a similar view to Figure 2 with some of the parts in a difierent position and only a portion of the pencil mechanism being broken away.

Figure 4 is an enlarged new of the operating member of the pencil when it 1s removed from the barrel and illustrating an eraser attached to the same.

Figure 5 is a cross section on the line 5-5 of Figure 3.

Figure 6 is an endview of the eraser.

Figure 7 is a side view of the eraser when disengaged from the pencil.

In the drawing-the pencil A 18 provlded with a tubular barrel 10 in which the mechanical lead operating mechanism B is contalned. The mechanism B is positioned within the casing in a manner to providea clrcular space 11 about thesame for extra marking lead. The forward end of the space 11 is c osed by the supporting washer 12 which is attached to the "mechanism B while the closure 13 which .is rigidly attached to the tubular threaded member 14 of the op eratin mechanism, serves to close the rear end o the pencil lead space 11. The closure 13 is adapted to rigidly hold the threaded member 14 of the mechanism B in the easing 10 or to disengage it therefrom so as to remove it from the cas' The closure 13 is thre aid ed so as to engage theftln'eaded bushing 28 which is ri idly se cured in the rear end of the pencl casing Obviously threads can be formed in the pencil casin 10 if desired, to enga the threads on t e c osure 13 to hold it rigidly secured to the casing.

The operating mechanism B consists of two separable sections, namelythe tubular threaded member 14.- to which the washer 12 and closure 13 are attached, and an operating member 15 which is provided with an engaging head 16. The operatin member 15 is rotatable within the thr'eade member 14 by engaging the head 16 when the partsof the mechanism B are associated together either in the pencil casing or barrel 10 or out of it. These parts are collectively removable from the casing 10 or the operatin member 15 can be removed independent 0 the threaded member 14. This construction provides a mechanical operating means for the pencil A which can be sectioually removed from the barrel or in its entirety, and

that the parts are interchangeable. The barrel can be cleaned of any articles of marking lead which might brea off therein and tend to clog the magazine by removin the mechanism B in its entirety.

he 0 ratin member 15 carries a lead pusher 1 whic extends through the longitudinal slot 18 so as to engage the thre of the memb r lt. The operating head 16'is formed with a recess 19, while the eraser 20 is provided with a screw 21, the same being countersunk or moulded in the body of the eraser to conceal the head of the screw with the threaded shank of the same extending out of one side of the eraser so that it threaded into the opening 22 formed in the head 16. The erasers 20 are supplied with screws 21 embedded therein as illustrated in Figures 2,6 and 7 so that a person using the pencil A can readily attach the eraser the pencil without it. In this instance only the small hole 22 and the recess 19 would appear from the end of the head 16. In using'an eraser 20 in connection with the pencil A when the body of the same is worn down the remaining portion together with the screw 21 can be removed from the open- .ing 22 by a screw driver or other suitable instrument. The erasers 20 are supplied as illustrated in Figure 7. q

The rear end of thetube 14 is formed with a slit 23 and the edge. turned inward forming a, shoulder 24 which is adapted to engage in the recess 25 formed in the shank of the head 16 to form a lock for holding the member 15 against free disengagement from the member 14, while the closure is formed with the recess 26 which will accommodate the expansion of the slit rear end of the member 14. The lead pusher 17 s provided with spring means which forms a frictional engagement between the member 14 and the member 15 and thus provides sufficient friction between these members to hold the member 15 from sliding freely in the threaded member 14 while the rearend 24 engages in the recess 25 to lock the operating member with its head therein against free disengagement from the same.

It is desirable to make pencils of this nature out of gold and silver tubing and therefore it is highly essentialthat any eraser or its attachment to the pencil be not only simple but of su h a nature that the pencil can be used with or without" the same without detracting from the artistic appearance of the same and it is obvious that the head 16 can be formed of suitable material which is not eifected by the eraser so thatit will not become discolored or tarnished when the era er is used in connection therewith.

While I have illustrated a pencil of a particular construction with an eraser attached thereto in a certain manner I desire to have it understood that I do not wish to confine myself to the particular construction illustrated, as the invention may be carried out by other means and applied to uses other than those above set forth within the scope of the following claims:

I claim:

1. A mechanical pencil comprising a casing, sectional lead propelling means positioned in said casing in a manner to provide a space around said propelling means for extra leads, said propelling means constituting a threaded member, a lead pusher adapted to cooperate with the threads of said threaded member and a slotted operating member adapted to carry said lead pusher, a closure for the rear end of said space, an operating member forming one of the sections of said propelling means, and a lock in said closure adapted to lock said opcrating member in said pencil.

2. A mechanical pencil including a barrel, a propelling mechanism adapted to be contained in said barrel, comprising a tubular threaded member positioned within the barrel to form a space thereabout for extra marking leads, a closure secured to the rear end of said threaded member, an operating member, a threaded lead pusher carried by said operating member adapted to engage said tubular threaded member, removably positioned within said threaded member and a lock associated with said closure and the operating end of said operating member to prevent the free disengaging of said operating member from said threaded membar.

3. A pencil includinga barrel, athreaded member positioned within. said barrel to form a space thereabout for extra marking leads, a shoulder forming a closure on the rear end of said threaded member for said extra marking lead space and adapted to lock said threaded member in said barrel, an operating member having an engagin head projecting from the rear end of said pencil, a lead carrier in said operating member adapted to cooperate with the threads of said threaded member, and spring locking means adapted to engage said operating member adjacent said engaging head to hold it against free disengagement from said pencil.

4. A mechanical pencil, including a barrel, a propelling mechanism adapted to be contained in said barrel comprising a threaded tubular member, means secured to either end of said tubular member adapted to form a space thereabout for extra marking leads, spring fingers formed on' one. end of said threaded member, an operating member removably positioned within said threaded member, a lead pusher slidably held within said operating member having resilient means adapted to hold said pusher into engagement with said threaded tube, said spring fingers onsaid threaded member adapted to engage said operating member to lock it against free longitudinal movement in operatin osition in said pencil.

5. A pencil including a casin a sectional lead propelling means adapte to be osihone in said casing in a manner to one 7 emma a magazine space thereabout, the casing forming the outer wall of the magazine, a

closure collar secured to one' of the mem- .bers of said repelling mechanism, a recess v cess and adapted tobe engaged y said resilient means to hold said operating member freely rotatable and against longitudinal movement in operating position.

6. A mechanical pencil including a casing,.a tubular threaded member adapted to be positioned in said casing .in a manner to form a lead chamber thereabout, an enclosure collar secured on said threaded member, adapted to rigidly attach'said. threaded member to said casing, an operating member extending through said threaded memher, a lead pusher having means adapted to hold said pusher in engagement with said threaded member and slidably positioned within saidoperating member, an en aging head formed on said operating mem er,'

an annular recess formed in said operating head and means positioned in said closure collar adapted to engage in said annular recess to form a lock for holding the operatmg parts of said pencil together in operation. i

' 7. Ina mechanical pencil, comprisinga casing, a tubular threaded member and a tubular operating member, said threaded andoperating member constituting the propelling mechanism of said pencil, and both being separable from said casing, together or singly, and locking means interposed between said members of said propelling means adapted to permit free rotation of said operating member and to retard separation of the parts of said propelling mechanism.

' HOWARD L. FISCHER.

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