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Патент USA US2134568

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Oct. 25, 1938.
J. P. LYNN
2,134,568
MECHANICAL PENCIL
Filed July s1, 1937
/
@Mmm
2 Sheets-Sheet 1
Oct. 25, 1938'.
. _L P_ LYNN
2,134,568
MECHANICAL PENCIL
Filed July 3l, 1937
2 Sheets-Sheet 2
Patented Oct. 25, 1938
UNITED STATES PATENT OFFICE
2,134,538
.
MECHANICAL PENCIL
John P. Lynn. Chicago. Ill., assigner to Dur-0
-Lite Pencil Company, Melrose Park. IIL, a oor
poraüon of Delaware
Application Jul! 31, 1937, Serial N0. 158,649
25 Claims. (Cl. 12I-18)
5
This invention relates to improvements in mechanical pencils of the type having a body and a
removable tip in which relative rotation between
the tip and the body' serves to actuate the lead
figures illustrate one preferred construction of
pencil manufactured in accordance with this in
vention and further illustrate various modifica.
tions of certain features thereof. In the draw
propelling mechanism.
ings-
This invention further relates to the .method
.
s
Figure l is a cross sectional view of one form
of manufacturing and assembling the pencil of
of pencil constructed in accordance with this
this invention.
invention;
It is an object of this invention to provide a
1o new and improved construction for mechanical
pencils whereby a finishing ring or element is
provided between the adjoining edges of the body
of the pencil and the removable tip so that an
Figure 2 is a cross sectional view of the pencil
shown in Figure 1 taken on the line 2-2 and 1Q
looking in the direction of the arrows;
Figure 3 is a cross sectional view of the pencil
shown in Figure l, taken on the line 3--3 and
improved finished appearance is imparted to the
l.; pencil and the rough or sharp adjoining edges
of the body and tip are eliminated. This feature makes it possible to provide a pencil of improved construction and appearance by the prevailing inexpensive methods of manufacture and
20 assembly which, except for this improvement.
would produce slight inaccuracies and in certain
looking-in the direction of the arrows;
Figure 4 is a cross sectional view of Figure 1 1r
taken on the line l-l and looking in the direc
tion of the arrows;
Figure 5 is an elevational view of the tube con
stituting a portion of the body of the pencil;
Figure 6 is a view similar to Figure 5, showing 2o
an outside shell constituting the surface lof the
instances misalignment of the tip and body por- body. placed upon the tube:
tions with the result that an objectionable rough
Figure 'I is an elevational view of the tip, lead
or sharp edge occurs at the location where theV tube and plunger construction as it appears when
25 pencil is grasped for writing purposes. This is removed from thebody ofthe pencil;
objectionable as it provides an undesirable feelFigure 8 is a perspective view of the clip lock
ing .in the hands of the operator. This is par- ing sleeve used in the pencil shown in Figure 1;
ticulariy true in cases where one or both of the
body and tip portions are polygonal and they are
30 rotatable relative to each other. This also produces misalignment of the fiat surfaces.
Accordingly, it is a further object of this invention to provide a construction st the Joint of a
pencil between the body and tip which will sub1:5 stantially eliminate detection through the sense
of feel of the adjoining edges of the tip and body
and without resorting to the placement at this
location of a protruding ring or member which, of
itself, would be noticeably felt by the user. In „
10 other words, it has been found desirable in pencils
lof this kind to eliminate the unwanted edges and
yet to avoid the placement of any bulky or protruding ring or other member at the Joint, and
this result is produced by the present invention.
si,
_ Figure 9 is an elevational view of the plunger
tube used in the pencil shown in Figure l;
Figure l0 is a fragmentary'elevational view of 30
a slightly modified form of plunger tube;
Figure 11 is a view showing a still further modi-fled form of plunger tube having a hub and body
tube mounted thereon and illustrating a modified
method of attaching a body tube to the hub;
3f
Figure 12 is an elevational view showing the
hub member'utilized in the pencil shown in
Figure l;
Figure 13 shows a slightlysmodiiied form of
hub, dinering in certain details from the hubs 4(
shown in Figures l1 and l2;
Figure '14 is a fragmentary elevational view
partly in cross section illustrating a modified
form of this invention. disclosing a ring member
A further object of this invention is to provide
a new pencil construction which lends itself to
simple and inexpensive manufacturing and asscmbling operations with the result that a highly
ei'ncient and practical pencil is produced at a
:.f.; minimum oi' cost and trouble.
Other objects not specifically enumerated are
contemplated , for this invention as will readily
appear to one skilled in the art as the following
for interrupting the Joint at the edges of the tip 4:
and body, attached to the tip;
description proceeds.
In the „commun“ drawings the various
to the metallic lead gripping end of the up.
Referring now to Figure 1, it will be noted that s--
55
' Figure l5 is a' fragmentary elevational view
partly in cross section of a bottom end of a modi
fied form of pencil body showing a ring formed
permanently attached to the body; and
:l
Figure 16 is an elevational view partly in cross
section of a modified form of pencil tip whereby
a molded portion is permanently locked directly
2
2,134,568
the pencil here illustrated comprises a body desig
nated generally 20, and a removable tip desig
nated generally 2i. The tip is rotatable relative
to the body for the purpose of propelling a lead.
The tip portion comprises a lead tube 22, a lead
gripping metallic end portion 23 and a body por
of its length with steep pitch threads 46 on its
outer surface whereby the tube may be rigidly
secured within the central opening 42 of the hub.
These threads cut their way into the hub and
tion 24 which may be formed of any suitable ma
terial and is preferably formed of molded non
rnetallic substances, such as synthetic resins, or
with suitable means for establishing a friction
holding action with the outer surface of the lead
tube 22 of the tip.
In Figure 9 this means is illustrated as com
the like. The lead tube 22 is provided with a
knurled or threaded portion 25, which is forced
into a central opening 26 of the tip end so as
to become tightly secured thereto. This con
nection may be provided by any type of holding
fit but, as here illustrated, the tube is equipped
with steep pitched cutting threads which cut
their way into the metallic end so as to become
iinmovably secured thereto.
The threads 25 like
wise extend along the lead tube 22 into the cen
tral opening 2l of the body of the tip 24, and thus
when the tip body is molded around the lead
tube a unitary tip construction is provided.
As illustrated in Figures 1 and '7, the lead tube
extends upwardly beyond the end of the tip and is
constricted at its upper end and provided inter
nally with threads (not shown) which have
' threaded engagement with threads on a plunger
thereby the tube becomes securely anchored
therein. The lower end of the tube is provided
prising spring sections 41 formed by arcuate slots
as illustrated which are depressed slightly in
wardly. There may be one or more of these in
the circumference of the tube. Furthermore, as
illustrated in Figure 11, more than one set of
such spring sections may be provided throughout
the lengt-h of the lower portion of the tube in or
der to provide spaced supporting contacts. 'I‘his
type of holding means, providing, longitudinally
spaced sets of spring sections, more firmly holds _
the tip against wobbling.
A
A still further modified form is illustrated in
Figure 10 wherein it will be noted the end of the
tube is provided with a >slot 50 so that lthe op
posed portions of the tube may be pressed to
gether to give a resilient, frictional gripping A
action for holding the tip to the pencil body.
The upper end of the plunger receiving tube is
preferably closed as at 5| by suitable crimping
30. The plunger 30 is of sufllcient length to ad
vance a piece of lead Hill through and out of the
over the end of the tube.
30 end 23 of the tip end. It will be noted that the
tip end is provided with a slot so that the opposed
After the plunger tube is secured within the y
portions may be sprung inwardly slightly to fric
central opening of the hub there is next provided
tionally hold the lead 100.
' a body tube 55 preferably constructed of metal as
The upper end of the plunger is preferably flat
illustrated in Figure 5 except that it is not pro
tened as at 3i for slidable lbut non-rotatable en`vided with the upper opening 55 until later in the ¿
gagement with a flattened tube 3l carried in the
assembly process. This tube has spring sections
body and adapted for rotating the plunger lrela
tive to the tip. As shown in Figure 1, the upper
portion of the tip body 24 is formed with an
opening 33 which surrounds the upper portion
40
of the lead tube whereby the hub member 35
may project downwardly into the opening 33 in
such manner that the lower end 36 of the plunger
receiving tube 31 may surround and frictionally
engage the outer surface of the lead tube 22.
Any suitable means may be provided for estab
lishing this frictional holding action as herein
after more fully described.
.
The hub member referred to is illustrated in
Figures 1 and 12 wherein it will be noted it com
prises a cylindrical member 35 preferably of
metaltand having ~a rounded bottom edge 38 and
a raised knurled or serrated upper portion 38.
The knurled upper portion terminates about mid
way the height of the hub whereby the hub may
be fitted with a tightly secured ring 40 to be here
inafter more fully described.
at the upper cnd thereof and is further provided
adjacent the top with a raised knurl or serrated
portion 5B.
,
When the> type of hub illustrated in Figures@
and Il is used the tube 55 is forced down upon
the raised knurl or serrated portion I8 of the
hub so as to firmly anchor the hub 35 onto the
upper portion of the hub. In the form illustrated
in Figure 11, the upper portion of the hub is not
provided with a raised knurl or serrated portion
but is formed of a relatively soft metal, such as
aluminum, and the tube is secured thereto by
means of prick punches 50 or some other equiva
lent and suitable form of attachment. In
mounting the tube 55 on the hub it will be noted f
that it is positioned thereon with its lower edge
in abutment with the ring 40.
`
Thereafter a nnishing shell having a pleasing
decorative appearance is ntted onto the tube 55
in the manner illustrated in Figure 6. 'I'his shell f"
has an internal diameter which allo'ws it to snugly
Furthermore, the hub is preferably provided
nt the tube 55 and has a length so that its upper
with a slight shoulder 4i on its upper edge where
by the serrations may readily establish their
initial cutting action.
A modified construction oi' hub is shown in Fig
edge terminates Just below the raised knurl 58
adjacent the upper end of the tube 55. With the
ure 13 wherein the ring 40 is formed as an in
lower end in abutment with the ring 40, the tube
and shell are next subjected to a‘punching or simi
lar operation whereby the openings 55 are pro
vided for accommodating som'e means for locking
the shell and the tube together. The locking
means may be the clip of the pencil, as illustrated
tegral portion of the hub. It will be noted from
Figure l1 that the hub is further provided with a
central opening 42 in which is mounted the
plunger receiving tube 31, the construction of
which is best shown in Figure 9. 'I'his tube 'I'l
has its upper portion deformed to a partially fiat
‘ cross section in the manner best illustrated in
Figure 3 so that it has a central cylindrical part
for receiving the threaded plunger 35 and the di
ametrlcally disposed parts 45 for receiving the
head 3i of ihe plunger. The lower portion of the
plunger receiving tube is preferably cylindrical
as shown and'is provided throughout a portion
parts so assembled, with care being taken that
the shell 55 is all the way on the tube 55 with its
in Figure 1.
`
Next in the assembling operation, a clip 58 which »
is preferably formed with a tang; as illustrated
in Figure 1, is inserted through the openings 55
and thereafter pivoted downwardly to its final
position so that the tang lies in engagement with
the inner surface of the tube 55.> When in this
3
9,134,568
position, the locking sleeve 61 may then be in
serted into the upper end of the tube 55. As
shown in Figure 8, the locking sleeve is prefer
ably provided with an indentation 6810i a size
to receivethe upper end of the tang of the clip
ability of the tip to rotate- with respect to the
body, the alignment ot the flat sides of the polyg
onal portion of the pencil may become misaligned
with the flat sides of the opposite portion oi' the
in situ for >accommodating and holding the tang
of the clip and further forming a secure locking
by the fingers of the user in the process of writing
pencil.
In such cases of misalignment, as well as
so that upon the exertion of a strong downward in cases where absolute concentricity between the
force, the sleeve is forced inwardly to a further tip and the body has not been attained, the re
extent thereby causing a deformation to occur by sulting sharp. joining edges between the tip and
the displacing action of the tang on the sleeve so ' the body provides an irritating and displeasing A
that a strong wedg'ing occurs with a recess formed feel at the place on the pencil which is gripped -'
i means for maintaining all of the'parts in as
sembled relation.
.
In addition to the above. however, a suitable
finishing ring l0 is preferably provided~ pressed
into holding engagement with the raised knurl 58
at the4 upper portion of the tube 55_. Thus it
will be noted that the body of the tube 55 and
20 the finishing sleeve 65 Vare held in abutment at
their lower edges against the ring 40 carried by
the hub 35 and that the upper portion-of the
ilnishing sleeve is held bythe finishing ring 10.
In some instances where the clip is not wanted,
r3 Ca the ñnishing sleeve may be held on the sleeve 55
by the action of the ring 'I0 alone.
In the form illustrated in Figure' l, the locking
' sleeve 61 preferably terminates slightly below the
upper edge of the tube 55, thus providing a
30 shoulder for holding an eraser 12 mounted in a
suitable metallic -spring _sided cup 13. This
eraser and cup may be of any suitable conventional
construction. The spring sections 51 at the
upper end of the tube 55 are deflected outwardly
o: L:
with the pencil. This ring, which, due to its cir
cular formation and to its external diameter being
selected -to substantially coincide with the maxi
mum diameter of the associated pencil parts, and
further, due to its rounder outer contour, effec
tively aliminates the sharp edges which would re
sult from misalignment of the adjacent edges
of the tip and body. Furthermore, this is a".
complished without interposing between the tip
and the body any member which, of itself, pro
trudes to a noticeable extent beyond the outside
contour of the pencil. In other words, the objec
tionable feel of the sharp edges is eliminated with
_out substituting a bulky protruding'ring or other
noticeable member at the joint.
As a result, the
user picks up the pencil and writes with it, with
out experiencing any strikingly noticeable Joint
or member at the location where the tip joins the
body of the pencil.
.
-
If desired, the corners formed by the 'edge and
the adjacent flat sides of the bodymay be slightly
rounded as illustrated in Figures 6 and 15. In
Figures 14 and 15, respectively. the rings |0I and
for establishing a frictional holding action with
|02, corresponding structurally and functionally '
a finishing cap 18 which encloses the eraser and
to the ring 40. are shown formed as parts of the
tip and the body respectively, instead of as a part
of the hub member 35 as above described. Fur
thermore, when the ring is formed as a part of
the tip or body, it obviously could be made in
tegral therewith instead of as a separate ring at
finishes the pencil construction. Any suitable
number of spring sections may be provided around
the periphery of the tube.
«
By referring to Figure 1 it will be noted .that
space 80 is provided inside of the tube 55 and
surrounding the plunger tube 2l. This space, as
clearly shownlin Figure 3, provides an annular
compartment for accommodating spare leads 82
for reloading the pencil when the lead |00 there
oi becomes exhausted. This lead chamber is
available for giving access to the leads by remov
ing 'cap 18, eraser and cup ‘l2-_1I so that the leads
may then be caused to tall from the upper end
oi' the pencil when the pencil is inverted. There
after the eraser aud the cap may be replaced and
the lead compartment closed.
The pencil is‘loaded in the conventional way for
removable tipped pencils and is accomplished by
removing the tip from the body by an endwise
Cl CA
pull and then by removing' the plunger I0 from
the lead tube 22 and then placing the fresh lead
into the upper end of the lead tube and replac
ing the plunger. -Thereupon the tip may be re
60 placed on the end of the body of the pencil by
an endwise push to restore the parts to their'
tached in the manner shown.
In Figure 16 there is illustrated a modided tip
construction wherein the end 90 which corre
sponds to the end 23 shown in Figure l,` is
_formed with a cylindrical internal surface 9|,
for engaging the steep pitch threads 92 of the
lead tube 22 and is further provided with a ilared
portion I3 which surrounds the lead tube 82 in a
manner to provide a space Il therebetween. At
the upper edge of the portion DI of the tip end
90 there is formed a burr or rolled edge which
provides a relatively small holding lip or flange
ß which overhangs the space 9| referred to.
Thus when the body portion IB is molded there
on in a~ manner substantially as previously de
scribed in connection with Figure 1, a portion of
the molded material nows into the space 94 and
under the edge or lip il and provides a keying
'portion for securely anchoring the body and the
‘end portion of the tip together to form a strong,
normal operating relationship-as illustrated in unitary construction. Furthermore. it will be
Figure l.
noted that the raised ~knurled portion 82 with its
Special attention is called to the construction steep pitch threads securely locks the molded
oi.’ the ring member 40 and the ring member 10 body portion l0 to the end l0.
at the top of the pencil. This ring is provided
The term “lateral’f as used in certain of the
appended claims in de?ning‘the character oi' the
with a rounded outer edge with its crown posi
tioned approximately midway the height of the openings Il in the wall of the non-metallic cas
i-ng‘ and the metallic lining of the pencil body, is
ring. It is so constructed that the external diam
eter of the ring is substantially equal to the maxi
intended' .to characterize the direction of the
mum diameter of the body of the pencil or that opening and not the shape of the opening. That
portion of the pencil which has the largest diam
is to say, it is intended to characterize the open
eter. 'This ring has particular usefulness in cases ing as extending from the outside to the inside
where either the tip or the body, or both. have
76
regular polygonal sides and thus, due to the
through the wall of the pencil and is not intended
to limit in any respect to the cross-sectional
4
2,134,568
shape or the direction of any cross dimension of
the opening, which may vary as desired. Thus,
these claims cover a longitudinally extending
lateral opening as well as a transversely extend
Ul
upper end of said tip.
_
8. A pencil body comprising a hub having a
ing lateral opening of the type illustrated in the
centrally disposed ring thereon, a metal tube
drawings.
mounted on said hub'on one side of said ring
and in abutment therewith and a body casing
member' disposed on said metal tube and in
abutment with said ring, means carried by said
hub for frictionally and releasably holding a tip
on said hub in abutmentwith the opposite side
of said ring, and means for holding said body
‘
I claim:
1. A pencil of the character described com
prising a body portion and a removable tip, a
lead tube having a plunger therein mounted in
said tip, said body comprising a plunger tube
having frlctional engagement with said lead tube
for holding said tip and body in operative asso
ciation and having a portion non-rotatably re
ceivinga portion o! said plunger, and a hub-like
member mounted intermediate the ends of said
plunger tube, and a tubular body >member
mounted on said hub-like member.
2. A mechanical pencil comprising in combi;
nation a removable tip having a lead tube and
plunger, a pencil body comprising a plunger tube
having means for frictionally engaging said lead
tube of said tip, means' mounted on said plunger
tube intermediate the ends thereof and a tubular
body member secured to said means and enclos
ing said plunger tube.
30
lower end of said casing member and constitut
ing a shoulder providing an abutment for the
casing member against displacement on said
tube.
9. A pencil comprising a body. a removable
tip, and a removable 'cap, said body 'comprising
a hub, a metallic tube, and a casing. said casing
being mounted on said tube and terminating
short of the end thereof, said metallic tube hav
ing spring sections for frictionally holding said ‘_
cap, and means within said hub having fric
tional engagement with a portion of said tip to
hold the same in operative association with said
body.
i
10. A pencil body comprising a hub member 2.3
3. A mechanical pencil comprising in combina
having a flange thereon, a metallic tube mounted
on said hub. and abutting said iiange, and a non
tion a removable tip having a lead tube and
metallic casing mounted on said tube and abut
plunger, a pencil body vhaving a plunger tube
adapted to have frictional engagement with said
lead tube to hold said tip and body in operative
ting said flange, aligned lateral openings through
association, a hub member mounted on said
plunger tube intermediate the ends thereof and
a tubular body member secured to said hub mem
ber and enclosing said plunger tube, said tubular
body member comprising a~metallic tube and a
finishing shell mounted on said metallic tube.
4. A pencil comprising a body and a remov
able tip, said tip having a lead tube and plunger
removable therewith, said body comprising a hub
member having a ring thereon, and portions for
said casing and tube and a clip extending through 30
lsaid openings. and means inside of said tube for
anchoring said clip.
11. A pencil body comprising a hub member
having a flange thereon, a metallic tube mounted
on said hub and abutting said ilange and a non
metallic casing mounted on said tube and abut
ti'ng said flange, aligned lateral openings through
receiving the tip in abutment with one side oi
said ring and for receiving a body member in
abutment with the opposite side of said ring, a
said casing and tube and a clip, extending through
said openings, and means inside of said tube for
anchoring said clip, said hub having a portion
for receiving a removable tip in abutment with
the opposite side of said flange.
12. A pencil body comprising a hub member
having a flange `thereon, a metallic tube mounted
plunger tube mounted in said hub member for
frictionally engaging said lead tube.
on said hub and abutting said ilange and a non
metallic casing mounted on said tube and abut
40
45
5. A pencil comprising a body and a remov- ` ting said ilange, aligned lateral openings through
able tip. said tip having a lead tube and plunger,
said body comprising a hub member having a
said casing and tube and a clip extending through
ring thereon, and portions for receiving the tip
anchoring said clip, said hub having a. portion
for receiving a removable tip in abutment with
the opposite side of said flange, and means
mounted in said hub for irictionally holding said
in abutment with one side of said ring and for
receiving a body member in abutment with the
opposite side of said ring, a plunger tube mounted
in said hub member and projecting below said
hub for frictionally engaging said lead tube.
6. A pencil comprising a body and a remov
able tip, said tip having-a lead tube and threaded
plunger therein, said body comprising a hub
member having a ring- thereon, and portions for
receiving the tip in abutment with one side of
said ring and for receiving a body member in
abutment with the opposite side oi' said ring, a
plunger tube mounted in said hub member and
projecting below said hub for frictionally en
gaging said lead tube, and having its opposite
end projecting inwardly beyond said hub and con
structed to non-rotatably engage a portion of
said plunger.
7. In a pencil. the combination of a body com
prising a metallic tubular structure and a sleeve
like casing member mounted on said tubular
structure, a tip removably mounted on the lower
end oi said body, lead advancing means adapted
to be actuated by the rotation of said tip, a ring
said openings, and means inside o! said tube for
tip on said body.
'
13. A pencil tip comprising a lead gripping end
portion, a lead tube and a molded body portion,
said lead gripping portion being secured to said
lead carrying tube and having a. portion sur
rounding said lead carrying tube forming a key
ing pocket therebetween, said molded portion of
said tip having a part occupying said keyed
pocket whereby said parts are held in assembled
relation.
‘
14. A mechanical pencil comprising a body
and a tip removable from said body. said tip
having lead guide means and a plunger'remov
able from said body with said tip, said body
comprising an inner metallic member and a
non-metallic casing mounted and supported on
said inner metallic member, said metallic mem
ber having a portion projecting beyond said non
metallic casing and being adapted to be received
within said tip, means for holding said inner
metallic member and noni-metallic casing in
on said tubular structure in abutment with the _ assembled relation, means in said metallic mem
60
5
2,184,568
ber for cooperating with said plunger when said
tip and body are in operative association, and
cooperating'means carried by said body and tip,
respectively, for holding said tip to said body.
‘ 15, A mechanical pencil comprising a body and
a tip removable from said body, said tip lhaving
lead guide means and a plunger removable from
said tip, said body comprising an inner metallic
member and a non-metallic casing mounted and
supported on said inner metallic member, said
metallic member having a portion projecting
beyond said non-metallic casing and being
adapted to be received within said tip, means
for holding said inner metallic member and non
15 metallic casing in assembled relation, means in
said metallic member for cooperating with said
plunger when said tip and body are in operative
association, and cooperating irictional means
carried by said body and tip, respectively, for.
20 holding said tip to said body.
16. A mechanical pencil comprising a body and
a tip removable from said body, said tip having
lead guide means and a plunger removable from
said body with said tip, said body comprising an
25 inner metallic member and a non-metallic cas
ing mounted and supported on said inner metallic
casing mounted on said inner metallic member.
said metallic member having a portion projec.
ing beyond said non-metallic casing and being
adapted to be received in said tip, means for
holding said metallic member and non-metallic
casing in assembled relation, a tube within said
metallic member .for frictionally receiving said
lead guide tube to hold said‘tip to said body and
means within said metallic member ior opera
tively engaging said plunger.
.
20. A mechanical pencil comprising in combi
nation, a body and a removable tip having a
lead guide tube and a plunger removable from
said Vbody with said tip, said pencil body com
prising an inner metallic member and a _non
mctallic casing mounted on said inner metallic
member, said metallic member having a portion
projecting beyond said non-metallic casing and
being adapted to be received in said tip, means
for holding said metallic member and non»
metallic casing in assembled relation, a plunger
tube Within said metallic member for frictionally
receiving said lead guide tube to hold said tip to
said body, said plunger tube being adapted to
have operative engagement with said plunger.
21. A mechanical pencil comprising in combi
member, said metallic member having a portion -nation a body and a removable tip having a lead
projecting beyond said non-metallic casing and guide tube and a plunger removable from said
being adapted to be received within .said tip, body with said tip, said pencil body comprising
30 means in said bo‘dy for cooperating with’ said
an inner metallic member and a non-metallic
plunger when said tip and body are in operative
association, lateral openings in said _metallic
casing mounted on said inner metallic member,
said metallic member having a portionprojecting
member and non-metallic casing, a clip extend
ing through said openings for holding said non
35 metallic casing and metallic member in assembled
relation, and cooperating frictional means car
ried by said body and tip, respectively, for hold
said metallic member and non-metallic casing, a
in@l said tip to said body.
17. A mechanical pencil comprising in combi
40 nation, a body and a removable tip having a lead
clip extending through said openings for holding
said non-metallic shell and metallic. member in
assembled relation. a tube within said metallic
member for frictionally receiving said lead guide
tube to hold said tip to said body and. means
guide tube and a plunger removable- therewith
within said metallic member for cooperatively en
from said body, said pencil body comprising an
inner metallic member and a non-metallic casing
mounted on said inner metallic member, said me
tallic member having a portion projecting be
gaging said plunger.22. A mechanical pencil having a body compris
yond said non-metallic casing and being adapted
to be received in said tip, means for holding said
inner metallic member and non-metallic casing
in assembled relation, a tube within said me
50
beyond said non-metallic casing and being adapt
ed to be received in said tip, lateral openings in
tallic member adapted to cooperate with said
plunger and having irictional engagement with
a portion of said tip to hold said tip in operative
association with said body.
18. A_mechanical pencil comprising in combi
nation, a body and a removable tip having a lead
guide tube and a plunger removable therewith
from said body, said pencil body comprising an
inner metallic member and a n‘on-metallic casing'
mounted on said inner metallic member, said
60 metallic member having a portion projecting be
yond said non-metallic casing and being adapted
. to be received in said tip, lateral openings in said
metallic member and non-metallic casing. a clip
extending through said openings for holding said
65 non-metallic casing and said metallic member in
assembled relation, a tube within said metallic
ing a non-metallic member provided with an
axial bore extending therethrough and a metallic
lining element fitted within said bore' and extend- `
ing the entire length oi said bore and protruding
from both ends thereof, a tip having lead guide
means and a plunger, removable from said body
with said tip, said tip being adapted to ilt on and ,
over one protruding end-o1' said lining element, ‘
means within said. linmg element for cooperating
with said plunger when said tip a'nd body are in
cooperative association, cooperating frictionaly
means carried by said body and tip respectively î
for holding said tip in operative association to '
said body, and a cap mounted on the other pro-
truding end oi said lining element.
23. A mechanical pencil having a body com
prising a. non-metallic member provided with an f
axial bore extending therethrough and a me
-tallic lining element ñtted within said bore and
extending the entire length of said bore and
protruding from both ends thereof, a tip having
lead guide means and a plunger, removable from i,
said body with said tip, said tip being adapted to
member adapted to cooperate with said plunger
ilt on .and over one protruding end oi said lining
and having frictional engagement with a portion
of said tip to hold said tip in operative associa
element, means within said lining element for
cooperating with said plunger when said tip and
tion with said body. '
body are in` cooperative association, cooperating .
19. A mechanical pencil comprising in combi
nation, a body and a removable tip having a lead
guide tube and a plunger removable from said
body with said tip. said Pencil -body comprising
irictional means carried by said body and tip
respectively for holding said tip in operative
75 an inner metallic member and a non-metallic
association to said body. a cap mounted on the
other protruding end oi' said lining element,
aligned lateral openings throush said non-me- »
S
2,184,568
tallic member and lining element, and a clip
having a portion extending through said open
prising a non-metallic'member provided with an
ings and means within said lining element for an
tallic lining element fitted within said bore and
axial bore extending therethrough and a me
choring said clip whereby said non-metallic
extending throughout substantially the length of
member and lining element are, locked in as
said bore and protruding from at least one end
, thereof, a tip having lead guide means and a
sembledl relation.
24. A mechanical pencil having a body com
prising a non-metallic member provided with an
axial bore extending therethrough and a me
tallic lining element htted within said bore and
extendingthroughout substantially the length of
said-bore and protruding from at least one end
thereof, a tip having lead guide means -and a
plunger, removable from said body with said tip.
said tip being adapted to tit on and over the pro
truding end- of said lining element, means within
said lining element for cooperating with said
plunger when said tip and body are in cooperative
association. and cooperating frictional means
20 carried by said body .and tip respectively for
holding said tip in operative association with
said body.
plunger, removable from said body with said
tip, said tip being adapted to fit on and over the
protruding end of said lining element, means
within said lining element for cooperating with
said plunger when said tip ,and body are in co
operative
association, cooperating i'rictional
means carried by said body and tip respectively
for holding said tip in operative association with
said body, aligned lateral openings through the
non-metallic member and the lining element and
a clip having a portion extending through said
openings and means within said lining element
for anchoring said clip whereby said non-metallic
member and lining element are locked in assem
bled relation.
'
-
25. A mechanical pencil having a bo'dy oor'n
JOHN P. LYNN.
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