U.S. patent number 3,880,321 [Application Number 05/451,462] was granted by the patent office on 1975-04-29 for spring clips for razor blade cartridge magazines.
This patent grant is currently assigned to Philip Morris Incorporated. Invention is credited to Paul A. Braginetz.
United States Patent |
3,880,321 |
Braginetz |
April 29, 1975 |
Spring clips for razor blade cartridge magazines
Abstract
Spring clips for supporting a stack of razor blade cartridges in
a balanced floating manner in a magazine are comprised of a member
of elastic sheet metal having an upstanding wall and legs
projecting from opposed edges thereof. Each leg defines spaced
resilient fingers and opposed sets of said fingers engage the
respective outermost cartridges of the stack.
Inventors: |
Braginetz; Paul A. (Staunton,
VA) |
Assignee: |
Philip Morris Incorporated (New
York, NY)
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Family
ID: |
38566060 |
Appl.
No.: |
05/451,462 |
Filed: |
March 15, 1974 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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334746 |
Feb 22, 1973 |
3833146 |
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Current U.S.
Class: |
221/66; 30/40;
206/360; 267/160; 206/356; 221/102 |
Current CPC
Class: |
B65D
83/10 (20130101); A45D 27/225 (20130101) |
Current International
Class: |
B65D
83/08 (20060101); B65D 83/10 (20060101); B26b
021/24 () |
Field of
Search: |
;30/40,40.2 ;221/66,102
;206/352,356,359,360,260 ;267/160 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Knowles; Allen N.
Attorney, Agent or Firm: Watson Leavenworth Kelton &
Taggart
Parent Case Text
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of application Ser. No.
334,746, now U.S. Pat. No. 3,833,146, of Paul A. Braginetz, filed
on Feb. 22, 1973 and entitled "Magazine for Razor Blade
Cartridges."
Claims
What is claimed is:
1. A spring clip for holding a stack of razor blade cartridges of
generally oblong shape comprising a U-shaped member of elastic
sheet metal having a main rear wall and top and bottom projecting
legs, each of said legs being bifurcated to provide leaf fingers
laterally spaced adapted to engage an adjacent cartridge with an
intervening slot between the fingers.
2. The spring clip claimed in claim 1 wherein each said leg
includes a terminal portion connecting together said leaf fingers
thereof.
3. The spring clip claimed in claim 2 wherein said wall defines an
opening adjacent said top leg, said top leg terminal portion being
disposed substantially parallel to said wall and including a slot
adjacent the ends of said leaf fingers, said slot being registrable
with said wall opening upon preselected movement of said leaf
fingers of said top leg.
4. An elastic support for holding a stack of razor blade cartridges
and facilitating insertion and removal of such cartridges by a
razor handle key complementary therewith, comprising an upstanding
wall member and first and second elastic legs projecting from
respective first and second opposite ends of said wall member, said
legs each having an initial portion projecting from and generally
orthogonal to said wall member and a second portion bent from the
ends of said initial portion toward said wall member and defining
mutually spaced leaf fingers engageable with said cartridge stack,
said first leg initial portion defining a slot extending throughout
the entire extent thereof to enable movement of said razor handle
key therethrough for said cartridge insertion, said second leg
initial portion defining a slot adjacent said end thereof and
extending throughout less than the extent of said second leg
initial portion to enable entry of said razor handle key therein
for said cartridge removal.
5. The elastic support claimed in claim 4 wherein each said leg
includes a terminal portion connecting together said spaced leaf
fingers thereof.
6. The elastic support claimed in claim 5 wherein said wall member
defines an opening adjacent said first end thereof and wherein said
terminal portion of said first leg is disposed substantially
parallel to said wall and defines a slot adjacent said leaf fingers
and registrable with said wall member opening upon preselected
movement of said leaf fingers to enable movement of said razor
handle key through said wall member and said first leg.
7. The elastic support claimed in claim 6 wherein said wall member
opening and said first leg slot are of like configuration.
8. The elastic support claimed in claim 6 wherein said wall member
includes upstanding spaced ribs projecting therefrom and
cooperative with said first leg terminal portion for guiding
movement thereof.
9. The elastic support claimed in claim 4 wherein said wall member
and said legs are constituted by a single integral sheet of elastic
material.
10. The elastic support claimed in claim 5 wherein said wall member
and said legs are constituted by a single integral sheet of elastic
material.
11. The elastic support claimed in claim 9 wherein said single
integral sheet is comprised of sheet metal.
12. The elastic support claimed in claim 10 wherein said single
integral sheet is comprised of sheet metal.
Description
BACKGROUND OF THE INVENTION
This invention pertains generally to magazines containing stacked
razor blade cartridges and more particularly to spring clip members
for supporting the cartridge stack therein.
The referenced Braginetz application discloses razor blade
cartridge magazines of a type wherein multiple cartridges are
supported in stack configuration in an unpartioned housing. Used
cartridges are added to one end of the stack and new cartridges are
removed from the opposite end of the stack through openings
adjacent respectively opposite ends of the housing by use of a
razor handle having a key or the like releasably interfitting with
the cartridges. As such cartridge removal and insertion occurs, the
make-up of the housed cartridge stack varies accordingly. To
facilitate this and other functions, the magazine includes elastic
support means engaging opposite ends of the stack and supporting
the stack in a floating manner within the housing.
SUMMARY OF THE INVENTION
An object of the present invention is the provision of elastic
support means for supporting razor blade cartridge stacks in such
unpartioned magazines.
In the efficient attainment of the foregoing and other objects, the
invention provides spring clip members of generally oblong shape
comprising a member of elastic sheet metal having an upstanding
wall and legs projecting from opposed edges thereof, each leg
defining spaced resilient fingers, opposed sets of fingers engaging
the respective outermost cartridges of a stack of cartridges and
thus supporting the stack in a balanced floating manner.
The foregoing and other objects and features of the invention will
be evident upon consideration of the following detailed discussion
of preferred embodiments thereof and from the drawings in which
like reference numerals identify like parts.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevation, partly in section, of a razor blade
cartridge magazine incorporating one embodiment of a spring clip
member in accordance with the invention.
FIG. 2 illustrates the FIG. 1 magazine as seen from the broken
plane II--II of FIG. 1.
FIG. 3 illustrates the FIG. 1 magazine as seen from the plane
III--III of FIG. 1.
FIG. 4 illustrates the FIG. 1 magazine as seen from the left of the
leftward upstanding wall of the FIG. 1 magazine, partly broken away
to show detail.
FIG. 5 is a side elevation, partly in section, of a razor blade
cartridge magazine incorporating another embodiment of clip
structure in accordance with the invention.
FIG. 6 illustrates the FIG. 5 magazine as seen from the plane
VI--VI of FIG. 5.
FIG. 7 illustrates the FIG. 5 magazine as seen from the plane
VII--VII of FIG. 5.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Magazine structure 10 is cooperative with each of the two
particular spring clip embodiments disclosed herein and is
described in full in the referenced Braginetz application to which
reference may be had for a more complete understanding of the
mechanical features of the magazine structure, of the razor blade
cartridges and of a keyed razor handle suitable for use therewith.
Extensive structural detail of the magazine is, however, shown in
FIGS. 1-7 herein which show the magazine as comprising a main
housing or casing 25 preferably of plastic material. Because of the
necessity of orienting the various figures differently in the
drawings for clarity of disclosure, the six sides of the magazine
are individually identified in the figures by reference characters.
Such characters are based on the position or orientation of FIG. 1.
As there shown the top side is designated U in accordance with the
fact used cartridges are inserted at that end, and the bottom side
is designated N since new cartridges are withdrawn at that end.
Consistently, the front and back sides are designated F and B
respectively and the right and left sides as R and L respectively.
It should be understood that the reference characters selected are
purely for convenience in connection with the drawings and in
actual use the casing may be oriented differently such that for
example the right side becomes left side, etc.
Housing 25 is open at the back or rear side B and has slot 21 (FIG.
2) in top end wall U and shortened slot 23 (FIG. 3) in bottom end
wall N and cartridge openings 19 and 22 (FIG. 1) in front edge wall
F. Mounted within casing 25 is a spring clip member 40 of elastic
material, such as sheet spring metal. The spring member is
generally U-shaped in cross section with the legs arranged at a
sharp right angle with respect to connecting base portion 41. The
base portion conforms in general shape to the rear opening of the
casing and forms back wall B of the magazine (FIG. 4). With the
magazine oriented to the position shown in FIG. 1, what is then the
upper leg of spring member 40 is bifurcated to form two laterally
spaced leaf members or fingers 42 with intervening slot 42a (FIG.
2). Fingers 42 have their ends formed with a rearward return bend
to provide free pressure blade stack engaging elements 43.
Similarly the bottom leg of the spring is bifurcated to form two
leaf members or fingers 44 laterally spaced by a slot 44a (FIG. 3)
and which have their ends formed with rearward return bends
comprising free pressure blade stack engaging elements 45. Slot 42a
registers with casing slot 21 and slot 44a with casing slot 23 and
the slots permit the free passage of the keyed neck or stem of the
razor handle in changing cartridges as is described in the
referenced Braginetz application. The bifurcated legs result in a
balanced condition. Referring particularly to FIG. 4 and leaf
spring fingers 42, there is shown in broken lines a cartridge 12
oriented with its relatively flat midportion upward which is the
relation in the case initially of a new magazine. The cartridge
engages fingers 42 at their inner edges near intervening slot 42a
at approximately areas 46a and 46b. When, however, the top
cartridge becomes an inserted used one, the position is reversed
and, because the bottom of the cartridge slopes inwardly and
upwardly, the points of contact with spring finger 42 are toward
the outer edges of the fingers, that is at areas indicated
approximately at 46c and 46d.
In assembling the magazine the spring member is preloaded with five
cartridges arranged flatwise as between adjacent ones and the
loaded spring member then slides forwardly into the casing through
the back wall opening and is secured in position through
interlocking elements to be described hereinafter. Back plate
section 41 (FIG. 4) of the spring member forms rear wall B of the
assembled magazine.
The stack of cartridges assumes a floating position between opposed
pairs of spring pressure elements 43 and 45. The character of the
spring parts and their relative biasing effort on the cartridge
stack is such as to prevent normally outward movement of a
cartridge through either of openings 19 or 22 by reason of the fact
that the top and bottom cartridge are each in a position whereby
the front ends of those cartridges engage against the portion of
the front wall between openings 19 and 22. When, however, a used
cartridge is inserted through opening 19 the cartridge stack is
forced downwardly so that the end of the bottom cartridge is fully
exposed at opening 22 and the then empty razor handle key may be
inserted into the bottom cartridge and the cartridge withdrawn
appropriately located on the razor handle. It will be noted that
all new cartridges are arranged with their respective razor key
receiving slots facing downwardly when the magazine is in the
upright position shown in FIG. 4. Upon insertion of a used
cartridge through opening 19, pressure portions 43 of the upper
spring leaves are so shaped as to present pressure points 43a
engaging the bottom surface of the cartridge being inserted and
lower leaf spring pressure portions 45 are so shaped as to present
two spaced pressure points 45a and 45b. Therefore, the cartridge
stack is in a normal static condition, and as it moves downwardly,
by the insertion of a used cartridge, is held in a three point
suspension system. End lugs 45c on spring leaves 45 engageable
against the bottom wall provide positive downward limiting stops
for the stack.
It may be noted that the rear wall 41 of the spring member defines
a generally wedge-shaped opening 95 (FIGS. 1 and 4) coaxial with
used cartridge opening 19. Such opening 95 is of sufficient expanse
to permit continued passage of the razor handle key
unidirectionally therethrough while retaining in the magazine the
used cartridge stripped from the razor handle. Rear wall 41 also
has two spaced trough-like depressions 47 forming guide ribs of
reduced friction for the blade stack in its floating downward
movement, and the forward wall of the magazine has interiorly a low
friction pressure pad area 48 against which the forward ends of the
cartridges ride. Ribs 47 also perform the additional function of
strengthening and stiffening back portion 41 of the spring member.
Fingers 42 of the upper leg of the spring member have similar
trough depressions forming ribs 50 to add rigidity; and likewise
fingers 44 of the lower legs have ribs 51.
The details of the manner in which the spring member is
automatically locked in place in assembly will now be described.
Bottom wall N of the housing has a lug 60 facing upwardly at its
midpoint between the housing side walls (FIGS. 1-3) with a ramp 61
facing the rear. The spring member in its bottom leg has a
rectangular opening 62 and as the spring member is advanced into
the housing the bottom leg rides up ramp 61 and is deflected until
opening 62 snaps over shoulder 63 of lug 60 and the leg is held
there by the pressure of spring leaf 45 against the bottom
cartridge.
At the magazine top spring fingers 42 each has a shoulder 70 on its
outer-edge facing toward the corresponding side wall and an inner
shoulder 71 on the opposite edge facing toward the center of the
magazine (FIG. 2). Toward the center of top wall U there are two
downwardly projecting lugs 72 each with a ramp 73 facing toward the
rear wall and as the spring member is advanced into the housing
fingers 42 are elevated until shoulders 71 snap over behind square
shoulders 74 of lugs 72 thereby locking the spring member from
retraction. Top wall U also has a pair of spaced rails 78 facing
downwardly (FIGS. 1 and 2) which function to guide a used cartridge
into the housing and also to assure that captured fingers 42 stay
ahead of lugs 72. Rails 78 at their rear ends have an inclined edge
79 forming a wedge-shaped notch 80 open to the rear and as the
spring advances into the housing shoulders 70 engage corresponding
inclined edge 79 deflecting outer offset portions 81 upwardly
(downwardly from the plane of the drawing as viewed in FIG. 2)
compelling the inner offset portions of the spring fingers inwardly
of shoulders 71 to fall off behind inner lugs 72 and the spring
member becomes positively locked against any dislodgement.
The two side walls R and L of the housing are recessed interiorly
along their vertical edges and back main wall 41 of the spring is
wider than the general interior cross dimension of the housing
whereby the spring back wall engages against vertical recessed
shoulders 85 (FIG. 3) limiting the inward position of the spring
member. Also the wider back wall dimension is carried forward a
short distance at the top and bottom forming flanges 86 engaged in
complemental recesses in the interior surface of the corresponding
side walls (FIGS. 2 and 3).
A further feature of the spring member and its support in the
housing concerns the pair of ribs 90 (FIG. 2) located on the inner
surface of top wall U. These ribs are positioned adjacent casing
slot 21 parallel to the slot and rails 78 and may be integral with
respective lugs 72. Spring fingers 42 are of reduced width at the
corresponding area so as to fit in each case between corresponding
rail 78 and rib 90 thereby assuring that spring fingers do not
become displaced or distorted into tracking slot 21 for the razor
stem and interfere with the operation.
Referring now to the embodiment of FIGS. 5-7, the spring clip
member 40' thereof is related in its general outline to the
previously discussed spring clip member, as indicated by usage in
large part in FIGS. 5-7 of the same reference numerals used in
FIGS. 1-4. Identical magazine housing 25 is employed and its open
back wall is again formed by connecting base portion 41 defining
opening 95. Likewise, fingers 42 and 44 of the upper and lower legs
projecting from base portion 41 have the previously discussed
interfitting relationships with housing 25 for securement of
preloaded spring clip member 41'.
As may be seen in FIGS. 5 and 7, fingers 42 have their ends formed
with a rearward bend to provide blade stack engaging elements 43'.
An initial portion of such rearward bend provides pressure points
43'a which engage the bottom surface of a used cartridge inserted
in opening 19 in the manner above-discussed in connection with
pressure points 43. Elements 43' extend from points 43a slopingly
rearwardly and laterally spaced to a transverse portion 43'b which
provides a unified termination therefor. Portion 43'b is disposed
essentially parallel to base 41 intermediate ribs 47 which serve as
guide rails for movement of portion 43'b. The end 43'c of portion
43'b is curved outwardly (FIG. 5) to avoid engagement thereof with
stacked cartridges. A generally wedge-shaped slot 43'd (FIGS. 5 and
7), coextensive with base aperture 95, extends throughout an
initial part of portion 43'b such that slot 43'd, base plate
opening 95 and used cartridge opening 19 are coaxially aligned upon
insertion of a used cartridge in the magazine housing and prior to
the removal of a new cartridge therefrom.
Such coaxial alignment of slot 43'd and openings 95 and 19 occurs
as the used cartridge flexes stack engaging element 43' upwardly
from the position thereof in FIG. 5, thereby moving portion 43'b
upwardly and slot 43'd into registration with opening 95.
As may be seen in FIGS. 5 and 6, fingers 44 have their ends formed
with a rearward bend to provide blade stack engaging elements 45',
each providing spaced pressure points 45'a and 45'b. Elements 45'
further include lugs 45'c extending downwardly and laterally spaced
to a transverse portion 45'd which provides a unified termination
therefor.
Upon the above-discussed insertion of a used cartridge within
spring clip 40', transverse portion 45'd abuts bottom side N of the
magazine to provide a positive downward limiting stop for the
cartridge stack and pressure points 45'a and 45'b engage the stack
bottom cartridge which is then aligned with opening 22.
Since various changes may be made in the structural details and
relations of the parts shown and described herein and accordingly
different embodiments of the invention be made within the
principles thereof, it is intended that all matter contained herein
shall be interpreted as illustrative and not in a limiting
sense.
* * * * *