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Патент USA US2130230

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Sept. 13, 1938.
2,130,230
G‘ G. COHEN
MECHANICALLY OPERATED MAGAZINE PENCIL
'
Filed Dec. 21, 1936
2 Sheets-Sheet l
39
INVENTOR
660125 G. ?'o/ie?
ATTORNEY
Sept; 13, 1938.
G. G. COHEN ~
2,130,230 ‘
MECHANICALLY OPERATED MAGAZINE PENCIL
Filed Dec. 21, 1956
2 Sheets-Sheet 2
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ATTORNEY
Patented Sept. 13,1938
243cm
UNITED STATES
PATENT oFFIcE
2,130,230
MECHANICALLY OPERATED! MAGAZINE
PENCIL
George G. Uohen, Seattle, Wash.
Application December 21, 1936, Serial No. 116,938
I 23 Claims.
(01. 120—18)
This invention relates to pencils and the pri
and sturdy in construction and reliable and ef?
mary object of this invention is to provide a me? cient in operation even though the mechanical
chanically operated magazine pencil in which a parts of the pencil are relatively small; to pro
plurality of pieces of lead contained within a mag
5 azine may be fed successively through the pencil _
as they are used without necessitating the manual
handling of such pieces of lead.
,
'
Another primary object of the invention is to
provide a magazine pencil of this nature having
10 a readily detachable magazine which is not expen
sive in construction and is adapted to be dis
carded when empty and replaced by another mag~
azine containing a fresh supply of pieces of lead.
Ordinary mechanical pencils require that the
15 pieces of lead be inserted by hand either directly
into the pencil or into magazines provided in
the pencil. This means that the leads, which are
usually black or colored and which are liable to
soil the ?ngers, must be handled by hand in re
2oiloading the pencils. In pencils of this type it is
vide a mechanical pencil which is not expensive
to manufacture; to provide a mechanical pencil 5
in which wear ‘on the parts of the pencil and
scraping, chipping and breaking of the pieces of
lead is reduced to a minimum, thus reducing the
danger of the parts, jamming and insuring long
life for the pencil; to provide a repeating pencil 10
which is effective to both propel and retract the
lead at the writing tip and is at the same time ef
fective to feed a succession of pieces of lead from
the magazine to the writing tip; and to provide a
pencil of this type which is relatively small in size 15
and is not necessarily larger in diameter than the
usual wooden jacketed lead pencil.
The above mentioned general objects of my in~
vention, together with others inherent in the same,
are attained by the device illustrated in the fol- 20 .
common practice to insert a lead each time one is lowing drawings, the same being preferred exem
used up. The present invention does away with plary forms of embodiment of my invention,
the necessity of handling the leads by, providing ’ throughout which drawings like reference numer
a magazine which may be discarded and re
als indicate like parts:
‘
25= placed by a fresh one when the supply of leads is
Figure 1 is a view in vertical section of a me- 25
exhausted and by providing pencil mechanism
which may be quickly and easily manipulated to
feed a fresh piece of lead into operative position
in‘ the pencil when a previously used piece of lead
30 .is used up.
'
It is a further object of my invention to provide ‘
novel and ei?cient lead propelling mechanism'em
bodying lead carrying devices by which ‘pieces of
lead are moved forwardly, which lead carrying de
35; vices embody a resiliently supported hook member
chanical pencil constructed in accordance with
this invention;
Fig. 2 is a vertical sectional view of the pencil
housing, magazine and writing tip showing these
three parts in exploded relation;
30
Figs. 3 and 4 are detached views in elevation
showing two diametrically opposite sides of a
slotted tube embodied in the invention;
Fig. 5 is a sectional View on an enlarged scale
substantially on broken line 5-—5 of Fig. 4;
3;
adapted to engage behind a piece of lead which is ‘ Figs. 6 and 7 are detached perspective views of
being moved toward the pencil writing tip, said two spring members used in connection with the
hook member having an inclined upper end por-‘ slotted tube shown in Figs. 3 and 4;
tion adapted to engage With the end portion of a
Fig. 8 is a detached perspective view of a cam
4:) piece of lead positioned above said lead carrying collar used in connection with‘ the slotted tube 4.‘
J
devices and blocked against upward movement, shown in Figs. 3 and 4;
whereby when upward movement is imparted to,
Fig. 9 is a detached elevation of a resilient cam
the lead propelling devices said hook member will sleeve adapted for use on the slotted tube shown in
be de?ected outwardly and caused to slide up-_ Figs. 3 and 4;
45 wardly past said piece of lead to a position where
Fig. 10 is a sectional view substantially on 1;;
it may engage with the upper end of said piece of broken line |0—!U of Fig. 9 of said cam sleeve;
Fig. 11 is a detached elevation of a spirally
It is a further object of the invention to provide '3 grooved ‘member used in the pencil for propelling
means for separating the adjacent ends of ‘two and retracting the lead holding and lead feeding
50 pieces of lead by deflecting the end of one of said mechanism.
’
50
pieces of lead sidewise to obtain clearance and
Figs. 12 and 13 are detached elevations of a
permit a lead propelling member to engage behind ' lead carrying device embodied in the invention;
the end of the other piece of lead. ,
Figs. 14, 15 and 16 are somewhat diagrammatic
Further objects of the invention are to provide I detached views partly in elevation and partly in
55v .an automatic mechanical pencil which is strong section, and with parts omitted and other parts 55
lead.
’
'
2,130,230
2
partially broken away, of the lead feeding mech
anism and a plurality of leads showing the parts
in various operative positions.
In the drawings |1 designates a tubular hous
ing member which is internally threaded at its
upper end for the reception of the externally
threaded lower end of a magazine l8 wherein a
plurality of pieces of lead l9 may be stored. An
opening 2|] permits leads to discharge, one at a
10 time from the bottom end of the magazine |8
into suitable mechanism within the pencil hous
ing. The opening 20 is centrally positioned and
the end wall of the magazine preferably is dished
to provide a somewhat ?attened conical shape
tapering toward the opening 20 to facilitate the
feeding of pieces of lead toward the opening 29.
Lead holding and feeding mechanism is pro
vided for insertion into the pencil housing |1.
This mechanism comprises a slotted tube 2|,
Figs. 1, 3 and 4, having an upper end portion 22
and a lower end portion 23 both of smaller ex
ternal diameter than the main body portion of
the tube. The size of the main body portion of
the tube provides sufficient space for the move
25 ment of the hook 46 hereinafter discussed. A
longitudinal slot 24 of a size su?ieiently small
to prevent escapement of a lead therethrough
extends from the lower end of the tube 2| to
the upper end thereof. A lead blocking spring 25
30 is positioned within the slot 24 at the location
of the upper end portion 22 of the tube. The
upper end portion of the lead-blocking spring 25
is ?xedly secured, preferably by brazing or weld
ing the same, to the upper end portion of the
35 tube. This ?xedly secured portion is designated
by 26 in Figs. 1 and 3. Preferably the spring 25
is of reduced cross sectional area adjacent the
?xed portion 26 to substantially limit the ?exing
on a fulcrum determined by such reduced cross
40 sectional area. The lower end portion of the lead
blocking spring 25 is provided with an outwardly
curved portion 21, see Figs. 1, 6, 14, 15 and 16.
This outwardly curved portion 21 is adapted to
be engaged by a resilient cam 28 provided within .
a slotted sleeve 29 to press the lower end of the
lead blocking spring 25 into the lead channel of
the tube 2| and crowd the lower end portion of
a piece of lead l9 sidewise out of said lead chan
nel, as shown in Fig. 16, provided the pieces of
50 lead are in a predetermined position.
The re
the sidewise movement of the lower end portion
of the spring 3|.
A spirally slotted member 33, Figs. 1 and 11, is
rotatably mounted on the slotted tube 2| and
?ts within the housing I1. The member 33 has a
spiral slot 34 therein extending spirally of the
member 33 from the lowermost end thereof to a
point a short distance from the upper end.v The
upper end portion of the spirally slotted member
33 above the spiral slot 34 is of slightly smaller 10
external diameter than the remainder of said
member 33 and the lowermost end portion of the
sleeve 29 ?ts snugly over and frictionally engages
this upper end portion. The upper end portion
of the ‘spirally slotted member 33 abuts against 15
a cam collar 35 which is welded or otherwise
?xedly secured to the slotted tube 2| at the lo
cation where the smaller upper end portion 22
of said tube connects with the larger medial
portion thereof. The lower end portion of the
spirally slotted member 33 abuts against ashoul
der 36 in a pencil tip member 31. ‘The pencil
tip member 31 has a bore which ?ts tightly onto
the smaller lower end portion 23 of the slotted
tube 2|, see Figs. 1 and 3, and secures the pencil 25
tip 31_ to the tube 2|.’ The collar 35 and tip
member 31 thus serve to hold the spirally slotted
member 33 in assembled relation on the slotted
tube 2|.
‘
'
‘
A lug 38 on the lower end portion of the
spirally slotted member 33 ?ts into a groove 39
in the housing |1, thus securing the spirally slot
ted member 33 against rotation relative to the
housing l1 and leaving the slotted tube 2| free
to rotate within thespirally slotted member‘ 33. 35
By grasping the tip member 31 with one hand
and the housing l1 with the other hand the tube
2| and spirally slotted member 33 may be rela
tively rotated. Thus, in this form of the inven
tion, I have shown parts which may be manually
operated in a manner similar to mechanical pen
cils now commonly on the market, but it is tovbe
understood that I am not to be limited to any
such speci?c form.
The cam sleeve 29 fits rotatably over the small
er upper end portion of the spirally slotted mem 45
ber 33 and said cam sleeve 29 is internally pro
vided with a stop lug 40 positioned relatively
closely above a horizontal shoulder 4| on the
cam collar 35 and adapted to be engaged by
either one of two upright shoulders 42 and 43 50
silient cam 28 is moved into engagement with on the cam collar 35. The cam collar 35 is shown
the outwardly curved portion 21 of the lead detached in Fig. 8._ The cam collar 35 is secured
blocking spring 25 by retractile turning movement to the slotted tube 2| and serves to limit the
of the lead carrying parts of the pencil and is angular movement of the cam sleeve 29 relative
moved
into a disengaged position relative to the ,to said slotted tube. When the slotted tube 2|
55
and spirally slotted member 33 are relatively ro
outwardly curved portion 21 when the lead carry
tated in the correct direction to propel the pieces
ing parts are turned in the proper relative di
of lead outwardly through the pencil tip, the
rections to propel the lead forwardly, as herein
after set forth. Another slot 30 of a width large ' collar 35 will permit suf?cient rotary movement 60
60 enough to permit a piece of lead l9 to be passed of the cam sleeve 29 relative to the slotted tube
therethrough is formed in the upper end portion 2| to move the resilient cam 28 clear of the out
22 of the tube 2| diametrically opposite to the
slot 24, see Fig. 5. The lower end of the slot 30
terminates below the end of the blocking spring
65 25. A flat spring 3|, Figs. 4 and 5, overlies the
slot 30. Theupper end portion of the spring 3|
is secured as by welding
the upper end portion of
mainder of said spring
that it may be deflected
or brazing the same to
the tube 2| and the re
is left unrestrained so
outwardly as shown in
Figs. 15 and 16, to permit the lower end portion
of a piece of lead |9 to be pushed sidewise
through the slot 33 and out of the lead channel.
A stop member 32 rigid with the tube 2| limits
75
wardly curved portion 21 of the lead blocking,
spring 25, thus permitting said spring 25 to as
sume the position shown in Figs. 1 and 14. When
the slotted tube 2| and member 33 are relatively
rotated in the proper direction to retract the
piece of lead at the writing tip, the cam sleeve
29 and tube 2| will be relatively rotated into a
position in which the resilient cam 28 engages
with the, outwardly curved portion 21 and exerts
a force tending to press the spring 25 into a lead
blocking position within the tube 2|, as shown
in Figs. 15 and 16. , 'It is to be noted that the
pieces of lead l9 shown in Figs. 1, 14,15 and‘ ‘16 75
2,130,230
must be in a position with their ends adjacent
the lowermost end of the spring 25 before the
lowermost end of one of said pieces of lead can
be de?ected sidewise and the lead blocking spring
>rnoved into lead blocking position. If the tube
2| and spirally slotted member 33 are relatively
rotated in a proper direction to retract the lead
at the pencil tip when the pieces of lead are in
a position, for instance, as shown in Figure 1, the
10 piece of lead l9 engaged by the lead blocking
spring 25 will not be de?ected sidewise and the
lead blocking spring 25 will not enter the lead
channel but the resilient cam 28 will be ?exed
outwardly merely exerting a resilient pressure on
I curved portion 21 of the lead blocking spring 25,
causing only a light pressure on the side of the
lead | 9. This will not displace the lead |9 because
of its position relative to the slot 30.
A lead carrying member, illustrated in Figs. 1,
14, 15 and 16 and shown detached in Figs. 12 and
13, is slidably disposed within the slotted tube 2|.
This lead carrying member comprises a longitu
dinally slotted tubular sleeve. 44 ‘of thin resilient
metal slidable within the slotted tube 2|. A
spring member 45 has its lower end portion se
cured to the slotted sleeve 44. The spring mem
ber 45 is preferably of reduced cross sectional
area adjacent the position of attachment with
the sleeve 44, as‘shown, which substantially lim
its the ?exing of such spring member to a ful
crum determined thereby. The spring member
45 is positioned within the slot 24 in the tube 2|
and is movable longitudinally within said slot 24.
The spring member 45 extends a substantial dis
tance above the upper end portion of the lead
gripping sleeve 44, and terminates at its upper
end in a hook member 46 which is resiliently and
yieldingly supported by the spring 45 and is nor
mally positioned within the lead channel in en
gagement with the upper end of a piece of lead
and forming a positive support for said piece of
lead. The uppermost portion of the hook 45 has
an inclined or rounded surface 4'! thereon which
is adapted to de?ect the hook member 46 out
wardly into a’ position as illustrated in Fig. 15
45 when said hook member is moved upwardly
against the end of a piece of lead which is blocked
against retractile movement by the lead blocking
spring 25. The spring 45 yieldingly urges hook
member 41 with su?icient pressure so that leads
50 above said hook member 4'! will be moved up
wardly therewith, unless the lead blocking spring
25 is alined in the lead channel in the slotted tube
2| and blocks the lead therebelow, as shown in
Fig. 15. Preferably the portion of the inclined
55 or rounded surface 41, which engages with and
slides on the sides of the pieces of lead, is shaped
so that the hook 46 will not dig into the pieces
of lead in the event said hook is moved in a
downward direction over the pieces of lead. The
60 depth of the slot 24 is determined by the size of
the expanded central portion of the slotted tube
3
end to end thereof, see Fig. 12, which renders
said lead gripping tube more resilient for the pur
pose of frictionally gripping pieces of lead I9,
which pieces‘ may vary slightly in size. This lead
gripping tube 44 is also preferably provided with
a short slot 50 (see Figs. 1, 14, 15 and 16) to pro
vide local resiliency for the purpose of obtaining
the desired relatively light frictional engagement
between the lead gripping tube 44 and a piece of
lead. This short slot 50 is preferably positioned 10"
in the lower end portion of the lead gripping
tube 44 and substantially opposite to the slot 49
and permits gripping action relative to a very
short portion of a piece of lead. The upper end
portion of the lead gripping sleeve 44 is prefer
ably formed with an integral resilient lip 5| posi
tioned diametrically opposite to the spring mem
ber 45 and bearing lightly against the wall of
the slotted tube 2|. This lip 5|, when unre
strained by the tube 2| will assume a position as 20v
shown in Figs. 12, 14, 15 and 16, and when the
lead gripping tube 44 is in the tube 2| the lip
5|, as shown in Figure 1, will always press lightly
against the wall of the tube 2|, thus insuring
that the ends of the pieces of lead l9 will be
guided smoothly into the lead gripping tube 44
without danger of binding or jamming,
In the operation of this pencil the lead holding
and propelling mechanism is assembled on and
within the slotted tube 2| and this assembled 30"
mechanism is inserted into the bore of the hous»
ing l1 and positioned so that the upper end por
tion of the pencil tip 3'! abuts against the lower
end portion of the housing |'|. Frictional en
gagement of the spirally slotted member 33 with-_
in the housing I‘! and of the lug 38 within the
groove 39 is su?icient to maintain the lead hold~
ing and propelling mechanism in assembled rela
tion within the housing ll. Obviously, other
means, not shown, may be provided for positively
securing these parts in assembled relation. if
desired.
When the parts are assembled, as above de
scribed, and a magazine I8, having pieces of lead
therein, is properly connected with the upper end
portion of the housing ll, the tip of the upper 45
end portion 22 of the slotted tube 2| will project
into a recess 52 in the end of the magazine l8
and the lead receiving channel of the slotted tube
2| will be correctly positioned in alignment with
the opening 20 in the magazine so that pieces of 50
lead |9 from the magazine l8 may feed by gravity
down into the lead channel of the slotted tube 2|.
The ?rst or lowermost piece of lead will ?rst en~
gage with and rest upon the inclined upper end
41 of the hook member 46, as shown in Fig. 14.
If said hook member_46 with the piece of lead 29
resting thereon, is positioned near enough to the
writing tip of the pencil so that the upper end of
the piece of lead I9 is slightly below the lower end
of the lead blocking spring 25, as shown in Fig. 14,
then relative rotary movement of the spirally
2|. This depth of the slot 24 is su?icient so that
the hook member 45 will not contact spirally
slotted member 33. A lug 48 on the spring mem
65 ber 45 extends outwardly through slot 24 into the
will cause the resilient cam 28 to move the lead
spiral slot 34 of the member 33. The lug 48 fol
lows the spiral slot 34 when the slotted tube 2|
same time crowding the lower end portion of the
piece of lead which lies alongside of the spring
and spirally slotted member 33 are rotated rela
tive to each other. The spirally slotted member
70 33 and slotted tube 2| thus function as a move
ment imparting means for moving the lead car
75
rying member longitudinally of the slotted tube
2|. The lead gripping sleeve 44 preferably has
'a longitudinally extending slot 49 extending from
slotted member 33 and slotted tube 2| in a direc
tion calculated to retract the lead holding devices
blocking spring 25 into a blocking position, at the
25 to one side.
Further rotary movement in a
retractile direction of these devices will cause the
inclined portion 4'! of the hook member 46 to
be thrust against the lowermost end of the piece
of lead l9 thus blocked against upward move
ment and the hook member 46 will be de?ected
outwardly and will slide upwardly along the side 75
2,130,230.
4.
‘ of-the piece of lead.‘ Before the lead carrying de
vice 44—45—46 reaches its uppermost position,
the slotted lead gripping sleeve 44 will telescope
over the lowermost end of the piece of lead. When
said lead carrying device reaches its uppermost
position, the hook member 46 will be a short dis
tance above’ the lowermost end of the lead block
ing spring
25. . If - the lead carrying device
44—45—46 is then moved downwardly the lower
10 most piece of lead will be carried downwardly
along with it, the hook member 46 will move into
a position above the upper end of said lowermost
piece of lead and the next succeeding piece of
lead will follow the hook member downwardly
15 until the upper end of this second piece of lead
is below the lower end of the lead blocking spring
25. Subsequent retractile movement of the lead
carrying device 44-45-46 will ?rst move the end
of the lead blocking spring 25 into blocking posi
20 tion behind the second piece of lead, as shown in
Fig. 15. Further retractile movement will de?ect
the hook member 46 sidewise into a position as
shown in Fig. 15, and still further retractile move
ment will cause said hook member 46 to move up
25 wardly along said second piece of lead until it
reaches a position above the upper end of said
second piece of lead where it will be ready to
take up a position behind or above the upper end
of said second piece of lead (as shown in Fig. 16) ,
30 as soon as the lead carrying device, 44—45—46
is again moved in a downward or lead propelling
direction. This upward movement of the lead
carrying device, while the second piece of lead
is blocked by the spring 25, will result in the
35 lowermost piece of lead being held non-movable
by the second piece of lead, while the slotted lead
gripping sleeve 44 is moved upwardly ‘over said
two pieces of lead, leaving the lowermost piece of
lead l9 projecting below the lower end of the lead
gripping sleeve 44 as shown in Fig. 16, with just
enough of its upper end portion gripped by the
lead gripping sleeve “to provide a ?rm hold on
said lowermost piece of lead for the purpose of
propulsion and retraction of the same relative to
the tip member 31. As the lead carrying member
45 with two pieces of lead therein is moved down
wardly from the uppermost position shown in Fig.
16, the lowermost piece of lead will be projected
outwardly from the tip member 31 into a writing
position substantially as shown in Figure 1, and this piece of lead, during its use, may be pro
pelled and retracted in the usual manner. Dur
ing the time the lowermost piece of lead is being
used a third piece of lead will rest upon the in—.
clined portion 41 of the hook member 46 as shown
55 in Figure 1. This third piece of lead will move
downwardly by gravity following the hook mem
ber in its downward movement. As long as the
lower end of this third piece of lead is positioned
below the lower end of the slot 30, this third piece
60
of lead cannot be de?ected sidewise and retractile
movements of the lead carrying dewice44—45—49,
such as are found necessary to adjust the writing
tip of the lead in use, will only bring about ?ex
ing of the resilient cam member 28 and the re
siliently pressing of the lead blocking spring 25
against the side of this third piece of lead, but
Without de?ecting said third piece of lead side
wise or interfering with the operation of the
pencil. Also when in such position, this third
piece of lead will be moved upwardly by the hook
member 46 when the lead carrying device 44
45—46 is moved upwardly to retract the lead at
the writing tip.
.
By the time the lowermost piece of lead is
almost-‘used up and the lead carrying devices
have been moved into substantially their lower
most position, the upper end of this third piece
of lead will be below the end of the lead blocking
spring 25. If the lead carrying devices are then
retracted or moved upwardly to the limit of their
upward movement, the tubular lead gripping
sleeve 44 .will be moved out of enagement with
the stub of lead which is to be discarded and will
be moved into the proper gripping position rela
tive to the second and third pieces of lead. Sub
sequent downward movement of the lead hold
ing devices will position the hook member 46 be
hind the upper end of the third piece of lead,
eject the used stub of the ?rst piece of lead, pro
vided said stub does not drop free of the pencil
tip 31, and bring the second piece of lead down
into the proper position for writing.
By operating in the manner above set forth,
causing relative rotary motion between the slotted 20
tube 2| and spirally slotted member 33 first com
pletely in one direction and then completely in
the other direction. it is possible to successively
feed out through the pencil tip 31 leads from the
magazine l8 one after another. The lead carry
25
ing device moving back and forth between the
maximum upward or retracted position and the
maximum downward or lead propelling position,
in conjunction with the lead blocking spring 25,
will cause said device to automatically receive a 30
fresh piece of lead each time it is moved from the
lowermost position to the uppermost position and
move a previously picked up piece of lead into
position for writing use, when it is again moved
downwardly.
It will be noted that the vpart of member 33
forming the upper edge of the spiral slot 34 is
made ?at and without pitch for approximately
one hundred eighty degrees at the lowermost
end of the member 33. This ?attened portion is 40
indicated by 34’ in Fig. 11. This ?attened por
tion 34’ provides for substantially one-half of
one complete revolution of the slotted tube 2|
relative to the spirally slotted member 33 without
any corresponding longitudinal movement of the 45
lead carrying device. This relative rotary move
ment without longitudinal movement of the lead
carrying device 44-45—46 is desirable as it en
ables the resilient cam 28 to move against the
lead blocking spring 25 before any upward move
ment takes place of the pieces of lead l9 below
the end of the lead blocking spring. As retractile
movement ?rst causes the cam 28 to engage with
blocking spring 25 and tends to urge said spring
25 into blocking position, there will be no upward '
movement of the leads until after the blocking
devices have been actuated. In the event that
the ends of the leads [9 are in the position shown
in Fig. 14, the blocking spring will immediately 60
function. In the event of shorter pieces of lead,
the hook portion 46 will move the leads 19 there
above upwardly until adjacent ends of leads may
be displaced and the upper end of the lower lead
blocked by the spring 25. The end of the ?attened
portion 34’ may also terminate in such a manner
as to leave a positive stop shoulder 33' for the
lug 48.
The normal shaking movement which a pencil
receives will ordinarily be sumcient to cause the 70
pieces of lead to feed downwardly into the tube
2|.
The hook member 46 being positioned behind
the end of the, piece of lead next above the piece
which is being used will serve as a positive thrust
5
2,130,230
resisting device preventing slippage. of the lead
due to downward pressure on the pencil. 1 ..
When the supply of pieces of lead in a maga
zine I8 is exhausted, the magazine will usually be
unscrewed from the pencil and replaced by a new
magazine ?lled with pieces of.1ead.. These re
placement magazines constitute a new articleof
manufacture which are supplied independently of
the pencils. The provision of these replacement
10 magazines forms a very convenient and easy way
of supplying the leads, provides with each maga
zine a supply of leads suilicient to last for a long
period of time and obviates the necessity of
handling the leads singly with the ?ngers. VPrci
15 erably-the pieces of lead are made of a prede
termined length. However,_it is possible to use
pieces of lead shorter than this predetermined
length successfully and without jamming or in
terfering with the successful operationi of this
20 pencil. If a piece of lead becomes-broken into
two or more pieces these short‘pieceswill Feed
through the pencil in the normal way. > The hook
member 45 will not gouge or scratch or mutilate
the leads and the leads are not liable to become
25 broken in the pencil.
~
Obviously, changes may be made'in the-forms,
dimensions and arrangement of theparts of my
invention, without departing from the-principle
thereof, the above setting forth only preferred
30 forms of embodiment.
'
I claim:
1. In a mechanical pencil, a tubular housing;
a slotted tube extending longitudinally of said
housing; a magazine for pieces of lead connected
35 with said housing and adapted to deliver pieces
of lead into the upper end portion of said slotted
tube; and lead blocking means movable into
said slotted tube between said magazine and a
piece of lead within said tube. a
40
'
2. In a mechanical pencil, a tubular‘housing;
a slotted tube extending longitudinally of said
housing; a magazine for pieces of lead connected
with said housing and adapted to deliver pieces
of lead into the upper end portion of said slotted
45 tube; lead blocking means movable into said
slotted tube between said magazine and a piece
of lead within said tube; and lead carrying vde
vices comprising a resilient lead holding sleeve
movable within said tube into frictionallyengaged
50 telescopic relation relative to a piece of lead
blocked by said lead blocking means.
3. In a mechanical pencil, a tubular housing;
a slotted tube extending longitudinally of said
housing; a magazine for pieces of lead connected
55 with said housing and "adapted to deliver pieces
of lead into the upper end portion of said slotted
tube; lead blocking means movable into said
slotted tube between said magazine and a piece
of lead within said tube: and lead carrying de
gaged telescopic relation relative to a piece of
lead blocked by said lead blocking means, and
hook means positioned for engagement with the
upper end portion of a piece of lead held within
said lead holding sleeve.
-
5. In a mechanical pencil, a tubular housing;
a slotted tube extending longitudinally of said
housing; a magazine for pieces of lead connected
with said housing and adapted to deliver pieces of
lead into the upper end portion of said slotted
tube; lead blocking -means movable into said
slotted tube between said‘magazine and a piece of
lead within said tube; and lead carrying devices
comprising a resilient lead holding sleeve mov
able within said tube into frictionally engaged 15
telescopic relation relative to a piece of lead
blocked by said lead blocking means, and hookv
means positioned for engagement with the upper
end portion of a piece of lead held within said
lead holding sleeve, said hook means. being re 20
siliently supported and having an inclined upper
end portion adapted to engage the end of a piece
of lead positioned above said hook means and
supported by said lead blocking means, whereby
said hook member will be de?ected to one side of 25
the piece of lead as the lead carrying devices are
moved upwardly.
.
-
_
6. In a. mechanical pencil, a pencil housing; a
slotted tube extending longitudinally of said pen
cil housing; a hook movable into said tube into 30
engagement with a piece of lead therein, said hook
member being longitudinally movable back and
forth in said tube; and adapted to engage with
the end portion of a piece of lead and provide
longitudinal pressure againstthe same during one '
direction of its travel and said hook having an
inclined upper end adapted to provide sliding
contact with, ‘but without damage to a piece of
lead during the other direction of its travel; and
resilient means urging said hook member into
said slotted tube during longitudinal movement
in either direction and against a piece of lead
therein.
7. In a mechanical-pencil, a pencil housing;
a slotted tube extending longitudinally of said 45
pencil housing; a lead carrying device movable
longitudinally of said slottedtube; a hook mem
ber disposed on said lead carrying device, said
hook member adapted to engage with the end
portion of a piece of lead and provide longitudinal 50
pressure against the same during one direction
of its travel and said hook member having an
inclined upper end adapted to provide sliding
contact with, but without damage to a piece of
lead during the other direction of its travel; and 55
resilient means urging said hook member into said
tube and against a piece of lead therein.
8. In a mechanical pencil, a tube providing a
longitudinal lead channel normally maintaining
60 vices comprising a resilient lead holding sleeve ' pieces of lead‘therein in ‘end to end relation, said
60
movable within said tube into frictionally engaged
telescopic relation relative to a piece of lead
blocked ‘by said lead blocking means, and hook
means positioned for engagement with the upper
65 end portion of a piece of lead.
4:111 a mechanical pencil, a tubular housing;
a. slotted tube extending longitudinally of‘ said
housing; a magazine for pieces of lead connected
with said housing and adapted to deliver pieces of
70 lead into the upper end portion of said slotted
tube; lead blocking means movable into said
slotted tube between said magazine and a piece
of lead within said tube; and lead carrying de~
vices. comprising a resilient lead holding sleeve
75 movablewithin said tube into frictionally, en
tube having'a transverse opening therein; lead
blocking means operatively positioned as respects
said opening in said tube and movable into lead
blocking position as respects one of two leads
which. are positioned in' end to end relation;
resilient means normally supporting said lead
blocking means in inoperative position; and
means moving said lead blocking means into
operative position.
9. In a mechanical pencil, a tube providing a 70
longitudinal lead channel normally. maintaining
pieces of lead therein in end to end relation, said
tube having a transverse opening therein; lead
blocking means operatively positioned as respects
said openingin said tube and movable into lead 75
'6
blocking position as respects one ‘of two leads
which are positioned insend to end relation; and
lead blocking means operating devices moving
said lead blocking means into and ‘out pf lead
blocking position.
10. In a mechanical pencil, means providing
a lead channel normally maintaining .pieces of
lead therein in end to end relation; lead blocking
means operatively positioned as respects said
lead channel and movable into lead blocking posi
tion to displace the leads from such end to'e'nd
relation; and lead blocking means operating de
vices moving said lead blocking means into "and
out of lead blocking position.
11. In a mechanical pencil, ‘a tube providing a
longitudinal lead channel normally maintaining
pieces of lead therein in end to end registration,
said tube having a transverse opening therein;
lead blocking means operatively positioned as
20 respects said opening in said tube and movable
into said lead channel to transversely displace
adjacent ends of two pieces of lead and block
longitudinal movement in one direction of one
of said pieces of lead; ‘and lead blocking means
25 moving devices moving said ‘lead blocking means
into and out of lead blocking position.
12. In a mechanical pencil, a tube providing a
longitudinal lead channel having pieces of lead
therein in end to end relation; lead blocking
30 means operatively positioned for movement into
lead blocking position vas respects one of two leads
35
40
45
50
which are in end to end relation; lead moving
means movable longitudinally of ‘said blocked
lead and toward said blocked end thereof; lea’d
blocking means moving devices; and movement
imparting means common to both said lead
blocking means moving devices and said lead
moving means providing when in one position
lost motion as respects said lead moving means,
whereby said lead blocking means is operated in
advance of movement of said lead moving means.
13. In a mechanical pencil, a lead gripping
member movable over a piece of lead to friction
ally grip the same; andv a hook member resili
ently connected with ‘said lead gripping member
positioned to engage with the end of a piece of
lead held within said lead gripping member.
14. In a mechanical pencil, a le'adgripping
member movable toward and over a piece of lead
to frictionally grip the same; and 'a hook mem
ber resiliently connected with said lead gripping
17. In a mechanical pencil, a tubular housing;
a magazine for pieces of lead detachably con
nected with the upper end portion of said hous
‘ing vand having a centrally positioned discharge
opening for pieces of lead; a tube positioned ax~
ially of ‘said housing and registering with said
discharge opening ‘in said magazine and having ,
a longitudinal slot; a lead carrying device com
prising a lead receiving sleeve slidably mounted
in said tube and a resilient member secured to
said ‘sleeve and slidably positioned in said slot;
a hook on the upper end portion of said resilient =
member the upper portion of said hook being
inclined, said hook being normally positioned in
said tube and ‘being movable outwardly by en
gagement of said inclined end portion thereof
with the end of a piece of lead which is positioned
above said hook; a pencil tip secured to the lower
end portion of said tube external to said pencil
housing; means for moving said lead carrying
device longitudinally of said tube in both direc
tions; lead blocking means positioned adjacent
the upper end portion ‘of said tube and movable
into a lead blocking position into said tube; and
lead blocking member moving means operatively
connected with said tube.
'
18. In a mechanical pencil, a tubular housing;
a magazine for pieces of lead detachably con
nected with the upper end portion of said housing
and having a centrally positioned discharge
opening vfor pieces of lead; ‘a tube positioned axi
ally ‘of said housing and registering with said dis at
charge opening in said magazine and having a
longitudinal slot; a lead carrying device compris
ing a lead receiving sleeve mounted in said tube
and a resilient member secured to said sleeve and
positioned in said slot; a hook on the upper end 40
portion of said resilient member normally posi
tioned within said tube, the upper end portion of
said hook being inclined; a pencil tip secured to
the lower end portionof said tube external to said .
pencil housing; means for moving said lead 315
carrying'device longitudinally in response to rela
tive rotary movement of said tube and said hous
ing; lead blocking means positioned within the
slot in said tubeadjacent the upper end portion of
end thereof.
said tube and movable into a lead blocking'posi 50
tion within said tube; :and resilient cam means
operated by relative turning movement in a re
tractile direction ‘of said tube and said move
ment imparting member to move said lead block
15. In a mechanical pencil, a tube providing
a lead channel; a lead blocking member movable
into and out of said channel; a sleeve angularly
movable as respects the tube; means limiting the
said tube.
19. In a mechanical pencil, a tubular housing;
a magazine for pieces of lead detachably con
member and operatively positioned to slidingly
pass along a side ‘of a piece of lead and over ‘an
angular movement of the sleeve relative to the
tube; cam means on the sleeve controlling the
operation of the lead blocking member; and
means rotatable relative to said tube having
frictional engagement with said sleeve for an
gularly moving said sleeve on said tube.
65
‘slot; and means for moving said ‘lead blocking
member into said ‘tube in lead blocking position
as respects a piece of lead in said tube.
16. In a mechanical pencil, a housing; a maga
ing member into lead blocking position within
nected with the upper end portion of said housing
and having ‘a centrally positioned discharge open
ing for pieces of lead; a. tube positioned axially of
said housing and registering with said discharge
opening in said magazine and having a longi
tudinal slot; a lead carrying device comprising a
lead receiving sleeve mounted in said tube and a
zine for pieces of lead connected with the upper
end portion of said housing; a tubular guide
member positioned within said housing commu
nicating with said magazine and having two
resilient member secured to said sleeve andposi
tioned in said slot; a hook ‘on the upper end por
tion of said resilient member positioned to engage
oppositely positioned longitudinal slots in the
sleeve, the upper portion ‘of ‘said hook being in
clined, whereby said hook will be de?ected out
wardly when it is moved upwardly against the end
upper end portion,
than the diameter
means providing a
of said wide slot;
one of said slots being wider
ofv a piece of lead; resilient
yielding wall at the location
a resiliently supported lead
75 blocking member operative through the other
with the end of a piece of lead held within said
of 'a piece of lead; a pencil tip secured to the lower
end portion of said tube external to said pencil
housing; a movement imparting member ‘secured
2,130,230
within said housing and positioned rotatively
_ around said tube and having a spiral slot therein;
means on said lead carrying device operatively
positioned in said spiral slot for moving said lead
carrying device longitudinally in response to rela
tive rotary movement of said lead carrying device
and said movement imparting member; lead
blocking means positioned within the slot in said
tube adjacent the upper end portion of said tube
10 and movable into a lead blocking position within
said tube; and resilient cam means operated by
relative turning movement in a retractile direc
tion of said tube and said movement imparting
member to move said lead blocking member into
15
lead blocking position within said tube.
20. In a mechanical pencil, means providing a
lead pencil maintaining pieces of lead in end to
end relation; and a hook member adapted to
enter between abutting ends of pieces of lead and
20 engage with the end portion of a piece of lead and
provide longitudinal pressure against the same
during one direction of its travel and said hook
member having an inclined upper end adapted to
provide sliding contact with but without damage
25 to a piece of lead during the other direction of its
travel.
21. In a mechanical pencil, a tubular housing;
a slotted tube extending longitudinally of said
7
housing; a magazine for pieces of lead connected
with said housing and adapted to deliver pieces of
lead into the upper end portion of said slotted
tube; lead blocking means movable into said
slotted tube between said magazine and a piece of
lead within said tube; and lead propelling devices
comprising means engageable with the upper: end
portion of a piece of lead blocked by said lead
blocking means.
22. In a mechanical pencil, a pencil housing; a
slotted tube extending longitudinally of said hous
ing providing a channel for pieces of lead; a lead
blocking means movable into said slotted tube and
blocking upward movement of leads there past;
and lead propelling devices comprising means en 15
gageable witth the upper end portion of a piece of
lead blocked by said lead blocking means.
23. In a mechanical pencil, a lead gripping
member movable over a piece of lead to friction
ally grip the same; a lead engaging device mov 20
able with said lead gripping member and into and
out of engagement with the end portion of a piece
of lead in said lead gripping member; and means
resiliently urging said lead engaging devices into
engagement with the end of a piece of lead in the
lead gripping device.
GEORGE G. COHEN.
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