US1447635A - Pencil holder - Google Patents

Description

Mar. 6, 1923. u

H. E. T. SUHLSEN.

PENCIL HOLDER.

FILED SEPT-11,1922.

f'zverafir Patented Mar. 6, 1923.

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HUGO EMANUEL TRAUGOTT STU'HLSEN, OF HAMBURG, GERMANY, ASSIGNOR TO THE FIRM OF SIMPLO Ffi'LLFEDER GESELLSGHAFT V'OSS, LAUSEN & DZIAIMBOR, 0F

HAMBURG, GERMANY.

PENCIL HOLDER.

Application filed September 11, 1922. Serial No. 587,440..

To all whom it may concern:

Be it known that I, HUGO EMANUEL TRAUGOTT St'IHLsEN, citizen of Germany, residing at Hamburg, Germany, have invented certain new and useful Improvements in Pencil Holders (for which is filed an application in Germany, on 1st August, 1921, by the firm of Simplo F iillfeder Gesellschaft Voss, Lausen & Dziambor, of Hamburg, with applicants knowledge and consent), c t which the following is a specification.

Pencil-holders are known in which by pressure on the head or button coupling and feed means are operated for acting upon a push rod adapted to give the pencil-lead a 7 hold or to push it forward, while on the return movement of the head or button the push rod will remain in its adjusted position together with the pencil lead. In the pencilholders known heretofore the lead is giveni a hold by a toothed push rod, which is moved forward on pressing a spring-pressed headpiece by the aid of a spring-pressed pawl, engaging the push rod, and which is locked when the pawl is released. The means for feeding and locking the lead are liable to be broken and are unreliable in operation.

The drawbacks mentioned above are done away with by the present invention inasmuch as the push rod, which is to support or to hold the lead against an upward thrust, is locked by a special coupling, consisting of a hollow cone and an annular frame, carrying a series of balls surrounding the push rod inside the hollow cone. By giving a relative movement to the hollow cone and the ball carrier frame the clamping action may be discontinued so that the push. rod together with the lead is left to itself to fall forward.

In the drawing two modes of constructing the pencil-holder are shown.

Fig. 1 is a longitudinal section of a pencil-holder, having a coupling which, when in the construction shown the shape of a cone 4 is adapted to slide. In this cone 4: which has a shank 4:1 guided at the lower end in the bottom 21 of the tube 2, a series of spherical gaps 6 is arranged in a circle, filled by a corresponding number of balls 61, which project out slightly through the outer surface of the cone 4 and are adapted to engage the inner conical surface of the hollow cone 3, while at the same time they also engage the push-rod 5, which projects centrally through a bore 12 of the ball carrier. Thus in the. position shown in Fig. 1 the balls clamp the push rod between them. The upper end of the ball carrier or inner cone has a tubular prolongation 7 which also surrounds the push rod 5 and which at its outer end engages a guide-piece 8. This guide-piece is connected by a pin 17. projecting open ended slots 9 in tube 2 with a tubular slide 10 which movably surrounds the end of the tube 2 there being a filler 9 between members 24 and 10. A spiral-spring 11 surrounding the tube 7 bears against the guide piece 8 and the end of member 6, and a second spiral-spring 12 surrounding the shank 41 bears with one end against the bottom 21 of the tube 2 and with the other end against the ball carrier 4.

It will be well understood that the pencillead 13, projecting out at the lower end or point of the body 1, is held against inward movement by abutting against the lower end of the push rod 5 which latter, being held fast by the balls 61, prevents the lead from moving upwardly when writing with the pencil-holder. A split friction guide 5' embraces rod 5.- A second' split friction guide 13 embraces lead 13 withsuflicient friction to hold lead 13 in position against its own Weight, but to allow t-he added weight of rod 5, to push the lead 13 through guide 13.

If desired to allow the pencil lead to pro ject out to a greater extent the holder is held vertically with its point downward and the tube slide 10 is shifted by thumb and finger towards the point of the holder. On account of this movement the ball carrier 4: is moved downward on account of the guide piece 8 being connected with the tubular slide and bearing against the tube 7. Thus the balls 61 are loosened and the push, rod 5 is released so that it can push the lead the latter.

out to any desired extent by its own weight. As soon as the tubular slide 10 is released it-will be again moved upward bythe spring 12, and also the cone 4 is returned by the spring 1 2 against the tension of spring 11. Thus the balls 61 will again grip the push rod 5 and 'hold it in its adjusted position.

If it is desired to push the lead to a greater extent or fully into the holder, it

will be suflicient to hold the pencil-holder with the point of the lead down on the paper or table and to catch hold of the tubular slide lO'and shift it downward. Consequently the push rod 5 will'be again released and the lead will be moved inwardly to any desired extent, since the push rod 5 will no more offer any resistance.

The construction shown in Fig. 2 differs from that described above inasmuch as the tube 2 is not connected with the tubular main body 1, but is movable relatively to The relative movement between the two tubes is limited by a slot 22 in the tube 2 and a pin 21 on the inside wall of the main bodyl, projecting into the slot 22. A spring 23 in the lower part of the body 1 tends to push the tube 2 upward, thus tending to loosen the coupling. By pressing on the button 24 attached to the upper end of the tube 2 by belng screwed into it, the tube 2 together with the complete coupling 3, 61, 4 will be moved down- -ward as far as the slot 22 and pin 21 will allow. The push rod 5, being gripped by the balls 61, will push out the lead 13 to a corresponding length. When the button 24 is released, the spring 23 will move the tube 2 back into its former position, the friction of the lead 13 and rod 5 against the sides of the tubes 16 and 7, and within the split friction guides 13" and 5 being sufiicient to retain the lead in its adjusted position, while the coupling 3, 61, 4 is temporarily loosened, from clutching rod 5, due to spring 23 overcoming spring 12 and sliding member 3 away from cone 6 until this return motion is completed, whereupon again the spring 12 acts to press the ball carrier upward and to drive the balls between the rod 5' and the hollow cone 3. The construction shown in Fig.3 differs from that shown inFig. 2 mainly inasmuch as the tubular slide is omitted and the button connected to the tube 2 is constructed to form a cap 14 telescoping over the upper end of the holder 1. The relative movement of the tube- 2 and the cap 14 on the.

main body 1 is limitedby a pin 15 attached to the main body 1 and projecting into a slot 15' in the tube 2. Moreover the tubular prolongation 7 of the ball carrier 4 projects out through the cap 14 as at 7 fora purpose hereinafter described.

Split friction guides 5" and 13" retain rod 5 and lead 13 inadjusted position.

2 will be returned to its former position by the spring 18, the push rod 5 remaining in its adjusted position as in the case of Figure 2 and being held by friction. Eachtime a further pressure is applied to the cap 14, the push rod 5 and together with it the pencil-lead will be further moved downward.

If it isdesired to allow the lead to fully disappear, within the holder. so as to protect its point against being broken off, the end of the tube 7 projecting out at the cap 14 will be pushed inwardly so that the push rod 5 will be no longer gripped by the balls 61 and thus the lead will easily slide upward, when the pencil-lead is pushed forward. The same operation will take place when a new lead is to be inserted.

I claim:

1. A pencil-holder comprising a tubular casing, a centrally guided push rod abutting with one end against the pencil-lead, a coupli-ngadapted to lock the push rod in any adjusted position, a spring tending to hold the coupling in operative position and a second spring tending to loosen the ting with one end against the pencil lead,

a coupling consisting of a hollow cone and a series of balls intermediate the hollow cone and the push rod,'whereby to clamp the push rod in any desired position, and twosprings, one tending to couple, and the other tending to uncouple, the coupling member.

3. A pencil-holder comprising a tubular casing, a centrally guided push rod abuttlng with one end against the pencil-lead, a tube slidably guided within-the tubular caslng and carrying a hollow cone, a series of balls intermediate the hollow cone and the push rod, whereby to couple the push I rod with the said tube and two springs, one

tending to couple, and the other tending to uncouple, the coupling member.

4. A pencll-holder comprising a tubular nection between the-cas ing and the tube,

a a button on the outer end of the tube, by

limiting the relative movement between these two parts and two springs, one tending to couple, and the other tending to uncouple, the coupling member.

5. A pencil-holder comprising a tubular casing, a tube slidable within and projecting out of the casing at one end, a pinand slot-connection between the said tube and the casing, a spring within the casing tending to push the tube in one direction, a button on the outer end of the tube, by the pressingdown of which the tube can be moved against the action of the spring to an extent limited by the pinand slot-connection, a lead push rod guided centrally within the holder, a coupling between the push rod and the said tube and two opposing resilient members acting on said couplin (i: A pencil-holder comprising a tubular casing, a tube slidable within and projecting out of the casing with one end, a "pinand slot-connection between the saidtube and the casing, a spring within the casing tending to push the tubeinone direction,

the pressing down of which the tube can be moved against the action of the spring to an extent limited by the pinand slot-connection, a lead push rod guided centrally within the holder, a coupling between the push rod and the said tube, comprising a hollow cone and a carrier, carrying a number of balls adapted to be clamped between the push rod and the hollow cone, and a second spring tending to push the ball carrier into clutching position, one tending to couple, and the other tending to uncouple, the coupling member.

7. A pencil-holder comprising a tubular casing, a tube slidable within and projecting out of the casing with one end, a pinand slotconnection between the said tube and the casing, a spring within the casing tending to push the tube in one direction, a button on the outer end of the tube, by the pressing down of which the tube can be moved against the action of the spring to rier into operative position, an outer tubular slide surrounding the said tube intermediate the button and the end of the tubular casing, a member arranged within the tube and adapted to bear against a prolongation of the ball carrier and connected to the tubular slide by a pin, and a slot in the wall of the tube through which the said pin passes. c

8. A pencil-holder comprising a tubular casing, a tube slidable within and projecting out of the casing with one end, apinand slot-connection between the said tube and the casing, a spring within the casing tending to push the tube in one direction, a button on the outer end of the tube, by the pressing down of which the tube can be moved against the action of the spring to an extent limited by the pinand slot-connection, a lead push rod guided centrally within the holder, a coupling between the push rod and the said tube, comprising a hollow cone and a carrier, carrying a number of balls adapted to be clamped between the push rod and the hollow cone, and a second spring tending to push the ball car rier into operative position, an outer tubular member surrounding the said tube intermediate the button and the end of the tubular casing, an abutment arranged within the tube and adapted, to bear against a prolongation of the ball carrier and connected to the tubular slide by a pin, aslot in the wall of the tube through which the said pin passes, and a third spring surrounding the prolongation of the ball carrier and biasing the ball-carrier'toward inoperative position.

In testimony whereof I have signed my name to this specification.

HUGO EMANUEL TRAUGQTT SUllllLSlEll.

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