Improvements in Pencil-holders with Expelling-mechanism.
Year: 1887

page_text: COMPLETE SPECIFICATION.
Improvements in Pencil-holders with Expelling-mechanism.
I OTTO BUSSLER of Nuremberg in the kingdom of Bavaria, German Empire,
Jeweller, do hereby declare the nature of this invention and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
cane-
My invention relates to that class of pencil-holders which are known as
pencils" and has for its object to provide means for removing the rest of a pencil out
of the case.
I attain this object by the mechanism illustrated in the accompanying drawings, in
which,
Fig. 1 is a longitudinal section of a pencil-holder, the pencil being still held in the
guiding-tube.
Fig. 2 is a view of the holder, partially in section, the pencil being pushed out of
the guiding-tube.
Fig. 3, 4, and 5 represent the inner system of tubes, showing the stud or pin which
pushes the pencil out of the case, in different positions.
Fig. 6, 7 and 8 are the respective cross-sections on line x y of fig. 3, 4 and 5.
Fig. 9, 10 and 11 are details.
Fig. 12 till 21 show a modification of the mechanism for pushing out the pencil.
Fig. 12 is a longitudinal-section of the holder, the pencil being still held in the
guiding-tube.
Fig. 13 & 14 are details.
Fig. 15 and 16 are the respective cross-sections on line x y of fig. 13 and 14.
Fig. 17 is the holder partially in section, showing the pencil pressed out of the
uiding-tube.

page_text: Fig. 18 and 19 show details and
Fig. 20 and 21 the respectivo cross-sections on line x y of fig. 18 and 19.
In all these figures is h the case of the holder, c the inside-tube to which the top k
is fastened and which has a longitudinal guiding-slit s. To the outside-tube h is
fastened the spiral guide y for the two projecting pins d and e of the tube a and stud 1.
f is the pencil.
The pencil is held in the short tube a by the stud b. Both the tube a as well as
the stud band therefore the pencil ƒ can be screwed up and down in the case as the
pins d and e are both compulsory guided by the slit s of the tube c and both engage
in the spiral g.
Thus far the construction of the pencil-holder is known and to this construction I
have applied my new compulsory pushing out or removing contrivance for the lead-
pencil. For this purpose the uppermost part of the spiral g is warped at p, as shown
in fig. 3, 4 and 5. When the top k is screwed till the pins d and e are in position
shown in fig. 3, the work of pushing out the pencil begins. The pine and conse-
quently the stud b is turned nearer to the opening of the case, but the pin d on tube a
moves along pas is shown in fig. 4, and the result will be, that the pencil is pushed
out as soon as the outer end of the tube a and stud 6 come in one plain as illustrated
in fig. 5. This can be done if the part p of the spiral g is long enough that the pin e
can go as high as in fig. 5. In the drawing however, this construction is only shown
in connection with my second pushing out contrivance which may be also used for
itself and which consists in the enlargement m of the guiding-slit s in the tube cas
represented in detail in fig. 9.
When these two constructions are united as it is the case in the drawings the
cutting out p of the spiral g needs not to be so long, for if the pin d has come in the
position fig. 4 the enlarged part m of the slit s in tube c will still have to move around
and the pine can move still higher in the spiral g till to the point indicated in fig. 5.
When a new pencil shall be inserted the stud 6 has to be withdrawn within tube a
so far, till the enlargements of the spiral g and slit s of tube c are set out of function
as is represented in fig. 3.
A modification of this construction is shown in figs. 12 till 21 of the drawings. The
pin d in this case is only guided in the guiding-slits of tube a and the pin d'alone is
engaging with the spiral g. When the pencil shall be removed and is screwed till to
the point shown in fig. 12 to 16, the pin e will enter the cavity m³, and move further
on, but the pin d will stop at the end of the guiding-slits, as is illustrated in figs. 17
to 21. As can be seen in the drawing the pin e is passing in this case also through
tube a and consequently tube a must have also a like opening i as is in the tube c.
By all these constructions of the pushing out contrivance the pins d and e are
compulsively guided and their position to each other is also compulsively regulated
when the old pencil shall be removed or a new one be inserted.
Having now particularly described and ascertained the nature of my said Invention,
and in what manner the same is to be performed I declare that what I claim is :
1.) In pencil-holders the removing contrivance for the pencil consisting of the
enlargement p of the spiral g to be entered by pin d in combination with pine of stud b
and pin d of tube a, engaging both with the spiral g and both being guided in the
slit of tube c, all operating in the manner and for the purpose substantially as
described.
2.) In pencil-holders the removing contrivance for the pencil consisting of the
enlargement m, of the guiding slits of tube c, to be entered by pin d, in combination
with pine of stud b and pin d of tube a engaging both with the spiral y and being
guided in the slits of tube c, all for the purpose and operating in the manner
substantially as described.
3.) In pencil-holders the removing contrivance for the pencil consisting of the
enlargement p of the spiral g, and of the enlargement m of the guiding-slits of tube c,
to be entered both by pin d, in combination with pin e of stud band pin d of tube a,

page_text: engaging both with the spiral 9 and both being in the slits of tube c all for the
purpose and operating in the manner substantially as described.
4.) In pencil-holders the removing contrivance for the pencil consisting of the
enlargement m of tube cand a like opening i in tube a in combination with pin e of
stud b entering these two openings m' and i and engaging with spiral g, and in
combination with pin d of tube a being always guided in slit s of tube c, all for the
purpose and operating in the manner substantially as described.