Improvements in Pencil or Crayon Cases or Holders.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improvements in Pencil or Crayon Cases or Holders.
A communication by LUDWIG VON ORTII, of 53, Klopfstockstrasse, Berlin, and
ROBERT HAGENMEYER, of 22, Marienthormauer, Nuremberg, in the Empire-
of Germany.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign.
Patent Solicitors, 6 Lord Street, Liverpool and 6, Bank Street, Manchester both
in the County of Lancaster and 323 High Holborn, in the County of Middlesex,.
Civil Engineer, 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:-
This invention has for its object to only permit the pressure necessary for writing
to be exerted on the point of a pencil, and, if this pressure be exceeded, to take
care that, by the slipping back under spring pressure of the pencil, the same does
not break off, and again at once assumes its normal position as soon as the pressure.
becomes a normal one.
In order to attain this advantage in so called English pencil cases where the
pencil is arranged in a peculiarly shaped inner tube, which may be pushed in or
out in the usual manner by means of a stud attached thereon, in a slotted holder
by means of a screw case, this latter is also made to slide over the slotted holder
and is retained in a given position by means of a screw spring or other suitable
device, from which, when too heavy a pressure is exerted on the pencil it slips.
back in spite of the pressure of the spring, until the normal pressure is again
resumed.
On the accompanying drawings, this pencil holder is shown in elevation in
Figure 3, in longitudinal and cross section in Figures 1 and 4 respectively, and
Figure 2 shows a longitudinal section of a portion of the same.
The lead holding tube C is arranged so as to slide in the slotted tube A, and
the same is operated in the usual manner by means of its stud c which projects.
through the slot and engages in the inner thread of the screwed case B covering.
the slotted tube, by revolving the screw case B round the slotted case A whilst
holding the latter stationary. The novelty in this arrangement is placing the
screw case B between two rings r attached to the slotted holder and the screw
spring on the screw case B, for pressing the case B against the ring r, that is
for retaining the same in a given position.
In order to avoid any revolving of the spring when the case B is revolved on:
the slotted holder A, a ring o is inserted between this spring and the case B, which
ring is adjustable on the slotted holder but is prevented revolving on the same by
means of pins engaging in its slot. The remaining devices do not otherwise differ
from known devices for projecting the leads. In order to allow of the screw-case B.
being revolved on the slotted holder A, the intermediate piece D' on which the
mouthpiece E is screwed, is soldered firmly on the slotted holder A and has a
round projection d' which is gripped by the sexagonal case D for which object the
latter is round inside at the point in question instead of sexagonal. A sexagonal
ring bis soldered firmly to the screw case which can slide within the holder
sheath, and, when the latter is revolved, revolves the screw case with it. The top
piece D' closes the sheath or case at the other end, and some device such as a
flange, pin or catch is arranged on the slotted holder in order that the sheath
cannot be drawn out. The moving backwards and forwards of the lead is
performed by holding fast the intermediate piece D' and turning the sheath D or
vice versa.
The advantage of this improvement is that, in consequence of the slipping back

page_text: under spring pressure of the lead in case of too heavy a pressure, there is no
danger of its breaking off, it being immaterial whether very fine leads or coloured
crayons be employed.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is-
A pencil case characterised by the screw case, which produces the pushing out
or drawing in of the lead, being movably arranged on the slotted holder and
retained in a given position by means of a screw spring or other suitable elastic
pressure device, from which, when the pressure on the lead exceeds the spring
pressure of the screw case, the latter together with the lead slips back under
constant spring pressure, and in this manner any breakage of the lead, or the
coloured crayons is avoided.
Dated this 9th day of January 1803
WM. P. THOMPSON & Co.,
Agents for the Applicant.