Pencil-Sharpener. Page: 3 of 4
[2], 2 p. : ill. ; 23 cm.View a full description of this patent.
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1,077,77
30 serve as guides to direct the lead of the
pencil into the channel 31. The ends of
said flanges forming the opening in said
channel further serve as a gage for regulat-
5 ing or controlling the cut of the blade 14.
It is obvious that if the lead of the pencil
be introduced within the channel 31 prior
to drawing the pencil backward over the
cutting edge 15 of the blade 14, the length
1 of the cut performed by said blade on said
pencil will be, in all instances, the same. In
this manner, the operation of the apparatus
is controlled to produce an evenly and
equally sharpened pencil. The raised sides
15 32 of the table 22 operate, if called upon,
to lead the pencil point to and between the
flanges 30 when advanced over the edge 15,
from the rear or open end of said table.
When using a tool thus described and as
s illustrated in the accompanying drawings,
the pencil is preliminarily disposed sub-
stantially as shown in Fig. 2 of the draw-
ings, with the lead or point thereof extend-
ing between the ends of the flanges 30 and
25 through the channel 31 formed thereby.
The pencil is advanced at each operation
until arrested by the flanges 30. The body
or wood of the pencil is then lowered against
the cutting edge 15, and, sufficient pressure
3o being applied, is drawn backward toward
the open end of the table 22. In this move-
ment, the blade 14 operates to remove the
shavings from the wood of the pencil and to
cut the lead of the pencil if movement of the
35 pencil be continued for this purpose. At
each succeeding cut, the pencil is slightly
rotated, said pencil being steadied within
the channel 31 for this purpose. By con-
tinuing the operation, there will finally re-
45 sult a sharpened pencil.
Rapidity of the work or the thickness of
the shavings removed by the blade 14 de-
pends on the level of the table 22. The
level of the table 22 is controlled by the co-
45 operation of the spring 28 and the screw
25. The operator manipulates, by means of
the head 26, the screw 25, depressing the
end with which it is in contact, or permit-
ting the spring 28 to lift said end at will.
so It will be observed that as the end of the
table 22 with which the screw 25 is in con-
tact is depressed, the opposite end thereof is
lifted, the result on the blade 14 being as
if the same were drawn downward through
55 the slot 21, thereby exposing less of the
blade and the cutting edge 15. This opera-
tion may be continued until an exceedingly
thin shaving is removed from the wood of
the pencil, or, if it be desired, the table
60 22 can be disposed so that the cutting edge
15 of the blade 14 is totally below the sur-
face of said table.
Under certain conditions of the wood or
the lead of the pencil, it may be deemed
65 wise to minimize the cut of the blade 14.If, however, it is desired to increase the cut
of the blade, this may be accomplished by
reversing the operation of the screw 25, to
permit the spring 28 to lift the end of the
table 22 with which it is in contact, thereby 70
depressing the end of said table having the
slot 21 formed therein. This results in ex-
posing to a greater degree the cutting edge
15 of the blade 14.
It will be observed that at any time the 75
blade may be adjusted or removed for re-
placement or.sharpening, and this by ma-
nipulating the screw 17.
Claims.
1. A pencil sharpener, comprising a box; 80
a bed block; a cutting blade slidably mount-
ed on said block; means for holding said
blade rigidly on said block; a table mount-
ed above said block and pivoted interine-
diate its ends, said table having a slot 85
through which is protruded the cutting edge
of said blade; and means for varying the
extent of protrusion of said blade through
said slot.
2. A pencil sharpener, comprising a box; go
a bed block; a cutting blade slidably mount-
ed on said block; means for holding said
blade rigidly on said block; a table mount-
ed above said block and pivoted intermedi-
ate its ends, said table having a slot through 9g
which is-protruded the cutting edge of said
blade; and means for rocking said table to
vary the protrusion of said blade through
said slot.
3. A pencil sharpener, comprising a box; 100
a bed block; a cutting blade slidably mount-
ed on said block; means for holding said
blade rigidly on said block; a table mount-
ed above said block and pivoted intermedi-
ate its ends, said table having a slot through 105
which. is protruded the cutting edge of said
blade; a yielding support for said table;
and an adjusting screw having a bearing on
said table, said screw and yielding support
cooperating to vary the protrusion of said 110
blade through said slot.
4. A pencil sharpener, comprising a box;
a bed block; a cutting blade slidably mount-
ed on said block; means for holding said
blade rigidly on said block; a table mount- 115
ed above said block and pivoted intermedi-
ate its ends, said table having a slot through
which is protruded the cutting edge of said
blade; a spiral spring disposed below to
support the inner end of said table; a feed 120
screw mounted in said box to bear upon said
table above said spring, said screw and
spring coperating to vary the elevation
of said table; and a rocking bearing for
said table intermediate said slot and said 125
screw and spring.
5. A pencil sharpener, comprising a box;
a bed block; a cutting blade slidably mount-
ed on said block; means for holding said
blade rigidly on said block; a table mount- 130
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Wolf, John J. Pencil-Sharpener., patent, November 4, 1913; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859114/m1/3/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.