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Dec. 31, 1946.
'
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R_ Popp
v
_
2,413,417
PORTABLE LAMP GUARD
Filed Sept. 24, 1943
4 Sheets-Sheet l
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fida/Ulf Poßjv,
Dern 31-,1è46.
RPOPP
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>PORTABLE LAMP GUARD
Filed sept.. 24,l 1943 '
.2,413,417
'
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D¢C. 3l,
R»~ popp_
2,413,417
PQRTABLE LAMP GUARD
Filed sept. 24, -19:13
4 Sheets-Sheet 3
2,413,417
mcs 3l,
PORTABLE
ì R~ LAMP GUARD
4 Sheets-Sheet 4
Filed Sept. 24, 1945
ß
.
INVENTOR.
MU'
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ì
BY
Patented Dec. 31, ‘1946
UNITED STATES PATENT OFFICE
y
2,413,417
_
PORTABLE LAMP GUARD
Rudolf Popp, Valparaiso, Ind., assignor to McGill
Manufacturing Company, Inc., Valparaiso, Ind.,
a corporation of Indiana
Application September 24, 1943, Serial No. 503,595
9 Claims. (Cl. 24U-54)
.
l
The present invention relates to guards for
portable lamps and more particularly to an im
proved insulating type of guard which isdetach
2
bulb within a sealed space and for guarding the
bulb and enclosing transparent sealing wall
against breakage.
It is another object of the invention to pro
vide an improved portable lamp guard of the
character described Which consists solely of in
proved methods of making the guard.
terñtting parts formed of ñbrous insulating ma
Guards have long been employed for insulating
terial and in which the parts are held together
portable lamps against envelope and ñlament
solely by the engagement of the interñtting por
breakage during handling, and the usual device
of this character conventionally comprises a plu 10 tions thereof.
It is still another object of the invention to
rality of metal parts which are interconnected Vto
provide as a part of the improved all fiber lamp
form a cage within which the lamp bulb is dis
guard structure, a ñbrous light reflecting element
posed. Portable lamp guards employing parts
whichmay easily be assembled with the other
formed primarily of insulating material have also
parts of the structure and is rigidly secured to
been manufactured for use in applications Where
the guard structure without the use of any metal
electrical short circuits »through the parts of the
parts.
guard are to be avoided. Guards employing parts
According to a further object of the invention,
formed of insulating material and combined with
there is provided an improved structure of the
portable lamps of the so-called vapor sealed type,
able from a socket carrying handle in which the
lamp receiving socket is mounted, and to imr~ _
have also been manufactured for use in areas 20 character described which is so arranged that
where static discharges or arcs between the parts
of the guard and other metal objects are to' be
avoided, due to the presence of inflammable and
explosive gases. The latter type of guard, how
ever, universally employs metal parts, such, for 25
example, as eyelets, nuts `or rivets, for the purpose
of joining the parts formed of insulating mate
rial, and frequently machine screw or other eX
no metal assembly parts are required in the as
sembly of the device and no expensive machine
tool operations are required in order to prepare
the parts for assembly.
According to still another object of the inven
tion, all parts of the improved structure are coat
ed With a waterproofing substance which also acts
to insulate the structure against physical shock
pensive cutting operations are resorted to in or 30 and to enhance the rigidity of the joints formed
between the interñtting parts of the structure.
der .to prepare the parts for assembly. These
It is a further` object of the invention to pro
expedients are expensive, both from the stand
vide an improved structure of the character de
point of material cost and from the standpoint
scribed which is so arranged that all parts of the
of the number of assembly operations required
to manufacture a completed device. Devices uti 35 structure may be stamped out on a production
basis without special machine tool operations on
lizing such fastening expedients are, moreover,
the individual parts.
More generally stated, it is an object of the
present invention to provide an improved struc
necessarily weakened in cutting the same to ac 40 ture of the character described which may be
simply and easily manufactured with a minimum
commodate the metal fastening parts. Moreover,
number of simple cutting and assembly opera
the arrangements presently in use for sealing the
tions, employs easily obtainable and cheap ma
bulb' within an enclosure to prevent gas ignition
terial, and yet is of rugged and light-weight struc
in cases of bulb breakage, are relatively compli
cated and expensive to manufacture.
45 ture.
It i5 still another object of the invention to
- It is an object of the present invention, there
provide an improved and simple method of mak
fore, to provide an improved portable lamp and
ing lamp guards from parts which consist solely
guard structure which is substantially free of the
of insulating material.
disadvantages outlined above and may, without
highly susceptible to breakage during the han
dling which accompanies the use thereof, due to
the fact that the component insulating parts are
It is a still further object oi the invention to
provide en. improved and simple structure for
obtaining a sealed connection between the trans
sealed lamp.
parent bulb enclosure and the handle within
It is another object of the present invention,
therefore, to provide a portable sealed lamp which - which the bulb receiving socket is mounted.
The invention, both as to its organization and
includes improved facilities for enclosing the lamp n
manufacturing changes, be readily adapted for 50
use as a non-vapor sealed lamp or as a vapor
2,413,417
3
method of assembly, together with further ob
jects and advantages thereof, will best be under
stood by reference to the following specification
taken in connection with the accompanying draw
ings, in which:
4
section of the cord. Adjacent the upper end of
the cap, the handle lil is provided with a trans
versely extending portion IBC having an opening
iSd therethrough which is of the same diameter
as the opening iZa. .A soit rubber sleeve ß is
disposed within the annular space IZb and is of
Fig, l is a side view of a. portable lamp holder
greater length than this space, so that as the cap
having combined therewith a lamp guard struc
I2 is threaded into the tapped end of the handle
ture characterized by the features of the present
Ii) the end portions of the sleeve are extruded
invention;
Fig. 2 is a top View of the lamp guard struc
within the spaces between the cord Il and the
walls of the two openings i2a and IGd, and the
ture shown in Fig, 1;
intermediate sections of the sleeve are swelled
Fig. 3 is a side view of one oi the side members
against the conductor il and the sides ci the
embodied in the improved lamp guard structure;
Fig, 4 is a bottom view of the base ring em
bore i219. Thus, the cord l! is ñxedly anchored
bodied in the lamp guard structure;
15 within the cap I 2 and a hermetic seal is provided
for preventing gases or liquids from entering the
Fig. 5 is a top view of one of the assembly rings
hollow portion Iilb of the handle through the
embodied in the lamp guard structure;
Fig. 6 is a top view of the bracing ring embodied
cord opening.
At the upper side thereof, the flared portion
in the structure;
Fig. 7 is a perspective view, partially in section, 20 ida of the handle IB is provided with a flat, plat
illustrating the mode of assembly of certain of
form-like surface upon which the improved lamp
the parts included in the structure;
guard is rigidly mounted. Briefly considered, this
Fig. 8 is a sectional view taken along the lines
guard comprises a base plate in the form of an
íl-B of Fig. 7 illustrating the manner in which
annular ring I5, eight side members I6, a brac
one of the side members is joined to the two» as 25 ing ring Il, a pair of assembly plates in the form
sembly rings provided in the structure;
of annular rings I8 and I9, a suspension hook
Fig. 9 is a side view partially in section illus
2|! and a hook securing device in the form of
trating a mcdiñed embodiment of the guard
a rawhide strip EI. All of the enumerated parts
structure having an impro-ved reiiector arrange
are formed of hard insulating material and, pref
ment incorporated therein;
Fig. 10 is a sectional View taken along the lines
30 erably, are constructed of a hard fibrous material
liâ-iil ofFig. 9;
such as compressed fibre. As will be apparent
from a consideration of the detail views thereof,
Fig. l1 is a side sectional view illustrating an
other embodiment of the combined guard and
each of the enumerated parts is formed of flat
'stock such that they may be stamped out in
reliector structure;
production quantities by utilizing Stamping dies
Fig. l2 is an end sectional view of the structure
of appropriate design. Moreover, each part is oi
shown in Fig. l1;
such coniiguration that all required cuts may be
Fig. 1.3 is a side View partially in section illus
performed with a single stamping operation.
trating a portable lamp holder and guard identical
Thus, expensive machining operations and re
vidth that shown in Fig. l but provided with im 40 peated cutting operations on single elements of
proved facilities for enclosing the bulb within a
the structure are completely eliminated.
sealed chamber;
More speciñcally to consider the structural ar
Fig. 14 is a top sectional view of the holder
rangement of the component parts of the guard,
shown in Fig. 13; and
it is pointed out that. the base ring I5 is provided
Fig. 15 is a fragmentary sectional view of a
around the surface thereof with eight equiangu
modiñed structure for providing a sealed con
larly spaced-apart recesses or openings 22 Iwhich
nection between the bulb enclosing globe and the
are substantially square and extend transversely
handle or" the holder shown in Fig. 13.
through the thickness of the ring. At the lower
Referring now to the drawings and more par
side of the ring I5, the opposed side walls of
ticularly to Figs. l and 2 thereof, the portable 50 each opening 22 are beveled or flared outwardly
lamp holder there illustrated comprises a handle
in the manner indicated at 22a in Fig. 4 of the
Iii which is formed of insulating material, such '
drawings, for the purpose of joining the ring with
as molded Bakelite or the like, and is provided
the side members it in the manner described
at its upper end with a ñared portion I on. suit
below. The base ring I5 is also provided with
ably apertured to receive and have rigidly mount 55 four angularly spaced-apart openings 23 through
ed therein a standard incandescent lamp socket.
the thickness thereof, which register with the
Integra-ily formed radially extending ribs I3 are
openings through the ribs i3 of the handle Ill,
provided around the 'circumferential surface of
and are tapped or threaded to receive the thread
the handle portion ma, which are drilled and
ed ends of the assembly screws I4 for the pur
counterbored to receive assembly screws I4 in a 60 pose of rigidly mounting the guard upon the
manner such that the heads of the screws are not
upper flat surface of the handle iii.
exposed. The handle I S is also provided with
Each of the side members I6 is of the coni-lg
an axially disposed bore for receiving the conduc
uration illustrated in Fig. 3 of the drawings. As
tors of a cord Il, these conductors being con
there shown, each side member is provided with
nected in the customary manner to the terminals 65 a notched lower end Ißa and with an eared upper
of the lamp socket mounted within the enlarged
end |612, the two ends being joined by a straight
apertured portion Iûa of the handle. At its lower
section IGC and a curved section läd. Each side
end the handle ib is counterbored and tapped to
member is further provided `with a notch I6e
receive the external threads of an anchor cap i2,
at the point along the length thereof where the
which is also formed of insulating material. As 70 curved section läd merges with the straight sec
best shown in Fig,y 13 of the drawings, this cap
tion lßc. More specifically, the notched lower
is drilled to provide an opening IZa of slightly
end of the illustrated side member I6 is provided
greater diameter than the cord II, and is then
with a portion I 5f of reduced Width and sub
counterbored through the threaded end thereof
stantially square cross section which is adapted
to provide an annular space I2?) surrounding a
to tightly ñt within and to extend through any
2,41s,417
5
or mashed to be accommodated by the beveled
one of the openings 22 provided in the base ring
portions of the openings 22. In other words, dur
l5, sothat the shoulders extending outwardly
ing the upsetting operation, flange-like portions
therefrom engage the upper surface of the base
ring. The upper extremity of the illustrated side
member lli is provided with two oppositely ex
tending ears lôg and l 6h which are of square
cross section and are respectively arranged to be
inserted through openingsv provided in the as
of the side member ends lßî are produced, which
overlie the beveled surfaces 22a of the opposed
side walls in each opening 22.
In this regard
it is noted that the amount of material of each
side member end portion llif which projects be
low the lower surface of the base ring l5 is just
sembly rings i8 and .lil in the manner more fully
suiiicient to ñll the beveled portions of an open
pointed out below.
ing 22 when expanded during the upsetting oper
The assembly washers or rings i8 and I9 are of
ation. Thus, each side member is rigidly an
identical structure, each thereof being provided
chored to the base ring l5 with the lower end
with eight leduiangularly spaced-apart i openings
surface thereof exactly flush with the lower sur
24 which extend transversely through the thick
face of the bearing ring.
ness thereof, are substantially square, and are of
Either before or after the upsetting operation
such dimensions as to tightly engage the ears lSg
is completed in the manner just described, and
and lâh of the side members i6. As best shown
preferably before, the bracing ring l'l is so posi
in Figs. 5, 7 and 8, the side walls which denne
tioned that the slots lla therein angularly coin
each opening 24 through the ring I8 are provided
with beveled or outwardly flared portions 24a 20 cide with~the upstanding side members IE. The
bracing ring is now telescoped down over the side
on one side of the ring for the purpose of anchor
members It with the slots l'la embracing the
ing an ear leg inserted therethrough in the man
side surfaces of the side members until it is hori
ner explained below. Similarly, the opposite side
zontally aligned with the slots lâe 'provided in
walls of each opening through the lower assem
the side members. As the slots läe are thus
bly ring le are beveled or flared outwardly at
the lower side of this ring so that an ear lith, of
one of the side members lli may be anchored
brought into alignment with the bracing ring l‘l,
therewithin. The two assembly rings i8 and I9
are provided with centrally aligned openings
portion of the bracing ring disposed opposite a
the side members snap outwardly so that each
which receive an end Eile of the suspension hook '
posed opposite a slot lße is embraced by the side
2li, this end of the hooi; being of reduced width
such- that shoulders are provided for bearing
against the upper surface of the upper assembly
surfaces of a slot l la. Thus, an interfitting dove
tail connection is provided between each of the
side members and the bracing ring which serves
to restrain the bracing ring against movement
longitudinally of the guard and to restrain the
side members against relative lateral movement.
ring I8. The portion of the hook end 29a which
extends through the aligned openings of the as
sembly rings i3 and l S is drilled at a point there
along adjacent the undersurface of the ring le
in order to receive the rawhide strip 2l and thus
retain the hook 2L? supported upon the two as
sembly rings.
'
"
slot i'la is embraced by the side walls of a slot
l 5e and each portion of each side member dis
In this regard it will be understood that as the
bracing ring is telescoped over the side mem
40 bers, the side members are bent inwardly to
tension the base ring l5. Accordingly, the side
As best shown in Fig. 6 of the drawings, the
members i6 are snapped into interñtting rela
annular bearing ring li is of the same sectional
width as the side members lli and is provided with
tionship with the bracing ring l1 when this ten
sion is relieved by bringing the slots lâe and l'la
into adjustment.
After ythe base ring l5, the side members I6
and the bracing ring l‘l have been assembled
each equiangularly spaced-apart notches l'la
which extend radially out-ward from the inner cir
cumferential surface-s thereof and are of such
width as tightly to embrace the side surfaces of
the side members iß'when inteigñtted with the
in the manner explained above, the upper ears
lßg of the side members lb are projected through
notches i6@ of these side members. In this re
gard it is also pointed out that the width of the
notch lee formed in each side member lâ is such
that the upper and lower surfaces of the notch
will tightly embrace the adjacent upper and lower
lthe openings 24 provided in the upper assembly
ring l ¿i until the lower surface of the indicated
assembly ring rests upon the adjacent flat sur
faces of the side members. In a similar man
ner, the downwardly extending ear ith of the
side members I6 are projected through the open
surfaces of the bearing ring l'l when the notched
portions of the ‘oearina ring and side member are
brought into interiitting engagement.
22 of the base ring so that the extreme end por
ings 24 provided in the lower assembly ring lll
until the upper surface of the ring abuts the flat
under surfaces of the side members. After the
rings I8 and IS have thus been brought to bear
against the upper and lower surfaces of the side
member sections lßd, and occupy their final
tions thereof project slightly beyond the lower
assembly positions, the projecting end portions
surface of the base rin .
of the ears llig and lâh are upset or expanded
to embrace the beveledv surfaces 24a of the open
In the assembly of the improved guard, the
base ring $5 is supported upon a suitable holding
fixture and the end idf of the eight side mem
bers E6 are inserted through the eight openings 60
It will be understood
that in this assembly operation, the ends |53’
are so inserted within the openings 22 of the 65 ings 24 respectively provided in the two rings
base ring that the upper or offset ends i517
lli and lll. The amount of material of each ear
thereof converge at their extremities. The por
idg which projects above the upper surface of
tions of the side member ends lßf which project
outwardly from the lower surface of the base
the ring I3 and the amount of material which
projects below the lower surface of the ring I9 is
ring i5 are now upset or spread by a suitable 70 just sufficient to ñll the beveled portions of an
press orpeening operation, either individually or
collectively,` depending upon the machinery avail
able. During the upsetting operation, that por
tion of each end lñf which projects beyond the
lower surface of -thebearing ring l5 is spread
opening 2li when expanded during the upsetting
operation. Here again, the end portions of the
ears lßg and lBh may be individually upset to
75
provide the Hangs-like projections which overlie
the beveled portions of the slots 24.-
On the
2,413,417
8
other hand, if suitable upsetting dies are avail
able, the flanging of the end portions of the ears
éEg and ith may be accomplished in a single
operation. As a further alternative, the assem
bly of all'parts of the guard, with the exception
of «the hook 2e, may be completed, after which the
are constructed to have straight portions lEc
which extend well'above the bracing ring Il and
substantially to the end of a light bulb disposed
within the structure. The curved portions IGd
of the side members` are made somewhat flat
in order to reduce the overv all length of the
end portions of the projection íêf and the ears
âtg and SSR may be upset in a single operation,
structure, and are enlarged at the lower ends
thereof so that slots Hlm for receiving the end
edge of the element 25 may be provided therein
providing suitable presses and upsetting dies are
available fory this purpose. Thus the assembly 10 at the ends of the straight portions Ißc. Also,
rings and the side members are firmly anchored
to each other to provide a rigid assembly of the
character illustrated in Figs. ‘7 and 8 of the draw
ings.
Following the assembly of the parts l5, I6, ll,
the portions llìc of the side members are out
to have a uniform width which is less than the
width of the base ring I5, and is greater than
the width of the bracing ring lll by an amount
equalto the thickness of the element 25. The
excess width of each side members projects radi
i8 and lll in the manner explained above, all
ally inward from the inner edge of the bracing
exposed surfaces thereof are covered with a coat
ring Il to provide a stop surface which may be
ing of lacquer, varnish or other adhesive, water
engaged by a side edge of the element 25.
proofing, cement-like material, for the purpose
Aside from the structural differences just point
of closing the cells of the fibrous material from 20
ed out, the guard structure as shown in Figs. 9
which these parts are made, and for the addi
and 10 is the same as that shown in Figs. 1 to 8,
tional purpose of closing the interstices which
inclusive, and the elements thereof are assem
may remain between the joined interfitting por
bled in exactly the manner explained above. The
tions of the enumerated parts. The coating of
the exposed surfaces is preferably performed by 25 element 25, which is cut from thin fiat stock
has a length which equals the distance between
dipping the completely assembled guard in a
the upper flat surface of the base ring l5 and
lacquer or varnish bath in order to insure that
the bottom edge portions of the slots lem. It
all exposed surfaces of the component parts are
has a width which is slightly greater than the
completely covered. In this regard it is noted
that the coating which is formed on the outer 30 length of the are extending from a side surface
of one of the side members lli to the opposite
surfaces of the various parts by subjecting the
side surface of the diametrically opposed side
assembly to a lacquer or varnish bath and then
member IB, and touches the inner edge surfaces
allowing the particular coating substance to set
of the intervening side members l5. After as
or dry, not only serves to prevent warping and
sembly of the guard structure and before the
disintegration of the fibrous material parts when
parts thereof are lacquered or varnished, the re
exposed to moisture, but in addition, serves as
fleeting element lili may be assembled within the
a shock absorbing layer which prevents these
structure by grasping the side edges thereof and
parts from being bruised and weakened when
pressing these edges toward each other to de~
subjected to blows occasioned by dropping the
guard or striking the same against hard objects. 40 form the element into a trough-like conñgura
tion. The element may then be telescoped within
Moreover,
cracks which may remain between
the joined interñtting portions of >the various
parts are ñlled so that the adjacent displaced
the guard structure to project the upper edge
portion thereof within the slots IGm of the side
members lll. Coincident with the insertion of
surfaces of the joints are effectively cemented
together to enhance the rigidity of the structure. 45 the edge portion of the element 25 within the
slot Mlm, the base portion of this element may
The final assembly operation of the guard is
be slipped over the upper surface of the base
that of mounting the hook 2li upon the completed
ring l5, and the side edges thereof may be slipped
cage assembly. rlî‘he manner in which this is
or forced within the side surfaces of the two
accomplished will be obvious in View of the pre
ceding explanation. It is noted, however, that 50 diametrically opposed side members iii. Inci
dent to the last mentioned operation, the central
the hook is also stamped out from ñat fibrous
portion of the element 25 is brought into tight
material stool: and is dipped or otherwise coated
engagement with the inner edges of the three
with a suitable waterproofing lacquer or varnish
intervening side members it. In this regard,
prior to its assembly upon the cage portion of
it will be understood that the inner edge of the
the guard. After the assembly of the guard parts
bracing ring il prevents the element 25 from
has been completed in the manner just explained,
bulging out through the gap between any adja
the guard may be mounted upon the flared por
cent pair of the side members.
tion lilo of the handle l0 by threading the assem
After the element 25 has been positioned within
bly screws Iê into the tapped drill holes 23 pro
vided in thebase ring i5.
60 the» guard structure in the manner explained
above, the inner upper edge portion of the base
Referring now more particularly to Figs. 9
ring l5 may be upset at three or more points
and 10 of the drawings, the modified embodi
around the upper edge portion of the base ring
ment of the invention. there shown, is essentially
periphery which is spanned by the element 25,
similar to that illustrated in Fig/s. l to >8, inclu
sive, and described above. Accordingly, like ref 65 thereby to provide anchoring flanges 26 in the
manner indicated in Fig. 9 of the drawings. Thus
erence characters have been used to identify cor
the reflecting element 25 is rigidly locked against
responding parts of the two structures. In the
the bracing ring I'I and three of the side mem
structure of Figs. 9 and lll there is provided a
bers I6 both along its upper and its lower edges.
thin light reflecting element Z5, which is formed
of a tough resilient fibrous. material, such, for eX 70 It is looked against rotary movement relative to
the side members It through engagement of its
ample, as nbre board, extends longitudinally of
side edges with the opposite side surfaces of the
the guard structure, and describes an arc span
two diametrically opposed side members. After
ning the gaps between five of the side members
the reflecting element 25 has been thus anchored
l5. >In order rigidly». to secure the element 25
within the guard structure, the entire assembly
within the guard structure, the side members IE
2,413,417
10
cally opposed side members It in the manner
best illustrated in` Fig. 12 of the drawings. For
quer, varnish, or another adhesive,waterproofing,
the purpose of maintaining this elementl rigidly
cement-like material in the manner explained
mounted within the guard structurejt is cut in
above. This coating not only performs the func
tions previously described, but in addition, serves DI wardly at four points along each side edge thereof
in order to provide tongues 25a and 25h which
to bond the element r25 against the bearing sur
extend in opposite directions. During the as
faces of the other elements of the structure,
sembly of the reflecting element within the guard
thereby to enhance the rigidity of the> overall
may then be _dipped orotherwise coated with lac
construction.
,
In the modified arrangement illustrated in Figs. 10
lvl and 12 of the drawings, the side members I6
are straight throughout their length. They have
a uniform width which exactly equals the width
of the bracing ring I1 and is slightly less than the
width of the base ring l5. The lower end as
sembly of the structure is exactly the same as
that shown in Figs. 1, 3 and 4 of the drawings.
The upper end assembly of this structure is sub
stantially different from the corresponding end
assemblies ofthe structures shown in Figs. 1 and 20
9. More speciñcally, the upper end assembly of
the structureshown in Figs- 11 and 12 comprises
a spoked wheel-like top member 21 which may be
die-stamped from flat ñbrous material, such, for
example, as ñbre board, of the proper thickness. 25
This member is provided with an outer ring por-*_
tion 21a, the inner and outer circumferential di
mensions of which exactly equal the correspond
ing dimensions of the base ring I5. Extending
A structure, the tongues 25a may, by suitable finger
manipulation, be pushed away from the main
bodyof the element and positioned against the
side surface of one of the side members I5 so
that when released they tend to draw the edge
portion Yof the element into tight engagement
with the edge surface of the side member. Simi
larly, the tongues 25h may be bent _outwardly
away from the main body of the element 25 and
so vmanipulated that when released they engage
the vside surface of the opposite side member I6
in order to draw the other side edge portion of
the element 25 into engagement with the edge
surface of the oppositev side member. Thus the
tongues 25a and 2519 in their engagement with
the diametrically opposed side ymembers I6 not
only serve to restrain the element 25 against ro
tary `movement relative to the guard structure,
but in addition, serve to maintain the side edge
portions of the member 25 in tight engagement
with the edge surfacesv of two of the side mem
radially inward from the ring portion 21a are a 30 bers It. The upper and lower edges of the ele
ment 25 are, of course, rigidly confined between
plurality of spokes 2lb which terminate at an
the inner top surface of the base ring I5 and the
apertured hub portion 21e concentrically disposed
lower surface of the top member 21. Thus a
within the ring portion 21a. This hub portion
structure of great rigidity and ruggedness is pro
is provided with an aperture 21d for receiving '
vided. After the reflecting element 25 has been
the lower end portion of the mounting hook 20,
assembled with the other parts of the guard
the cotter pin 2l being provided on the underside
structure in the manner explained above, the
of the hub portion 21e to span the aperture 21d
entire structure may be dipped or otherwise coat
and thus maintain the hook 20 assembled upon
ed with lacquer >or varnish in the manner ex
the member 21. Opposite the ends of the spokes
21h, the ring portion 21a of the Inembell 21 is 40 plained above. This coating serves to bond the
reñecting element 25 to the bearing surfaces of
provided with rectangular apertures 21e for snug
the other parts of the guard structure, thereby
ly receiving the ends IBg of the members I6 of
further to enhance the rigidity with which the
reduced cross-section. These apertures are of
element 25 is mounted within this structure.
the same configuration as the apertures 22, Fig. 4,
From the above explanation it will be under
45
provided in the base ring l5.
stood that an improved portable lamp guard is
In the assembly of the improved guard struc
provided, which consists solely of parts formed of
ture, the base ring I5 is supported upon a suit
hard fibrous insulating material, and that the
able holding ñxture and the ends I6f of the eight
resulting structure is rugged, and is pleasing in
side members i6 are inserted through the eight
openings of the base ring. The upper ends of the 50 appearance. It will also be apparent that _in the
manufacture of the device, no expensive machine
side members are then sprung inwardly to be
tool operations are required. Moreover, the cut
received within the transversely extending slots
ting and assembly of the component elements of
of the bracing ring I1, following which the brac
the guard may be accomplished in a simple and
ing ringis telescoped downwardly over the outer
edge surfaces of the side members until the slots 55 inexpensive manner using standard equipment
and with a minimum number of operations.
thereof are brought into coincidence with the
As best shown in Figs. 13 and 14 of the draw
slots in the side members. When this position
ings, a bulb enclosing globe 3l? may be utilized in
of the bracing ring is established the side mein
conjunction with the handle and guard structure
bers snap outwardly to become interlocked with
the bracing ring I1, in the manner previously ex 60 shown in Figs. 1 and 2 for the purpose of enclos
ing a bulb 3l, with which the device is ñtted,
plained, so that the upper ends Ißg thereof are
within a sealed gas tight chamber. This globe is
positioned to be received within the apertures
in the form of an inverted cup, is constructed of
21e of the member 2'?. After the top member 21
glass having heavy wall thickness, and half the
is thus assembled upon the upper ends of the side `
members I6, the end portions Iög and IBfof the 65 area thereof is enameled as indicated at 3M to
provide a light reñecting surface. At the outer
side members may be upset to provide rigid con
side- of the rimportion thereof, the globe 39 is
nections between all parts of the structure.
provided with threads 3th which are adapted for
The light reflecting element 25 of the struc
threaded engagement with internal threads Iûe
ture shown in Figs, 1l and 12 of the drawings is
adapted to be held within the inner peripheral 70 provided at the inner peripheral surface of the
recessed end portion of the handle
More spe
edge of the base ring I5 and the ring portion 21a
ciñcally, the enlarged upper portion Ida of `the
of the member 21 which overhangs the side mem
handle I0 is provided with an enlarged cup
bers It inwardly of the guard structure. The
shaped opening at which the socket receiving
side edge portions of this element are adapted
opening Iûb terminates. Thus, a flat platform
lto bear against the inner edges of two diametri;
2,413,417
l1
l2
like surface Iûf extending transversely of the
handle Il] is provided between the walls of the
enlarged cup-shaped opening and the edge socket
receiving opening lûb. The inner edge of this
opposite ends each being provided with integrally
surface is utilized to support a flange or lip 35a
formed oppositely projecting ears which extend
parallel to said side members, and a pair of as
sembly rings disposed on opposite sides of said
opposite ends and respectively provided with
extending radially outward from the lamp receiv
spaced apertures therethrough through which
ing socket 35. For the purpose of providing a
sealed connection between the globe 30 and the
handle le, a soft rubber washer 32 is provided,
which lies ñat against the surface Iûf and snugly 10
said oppositely extending ears extend, said ears
having flanges at their extremities which overlíe
segments of said assembly rings to maintain said
rings and side members assembled.
2. A portable lamp guard comprising a flat
embraces the periphery of the socket flange 35a.
base ring having spaced apertures therethrough,
The outer edge surface of this washer is disposed
between the edge of the globe 3i) and the surface
a plurality of side members provided with ends of
Ißf to be clamped therebetween when the globe
reduced cross section extending through the ap
3i) is threaded into the threaded portion of the 15 ertures in said base and with opposite ends which
handle I e. Thus, a hermetic seal is provided be
converge at their extremities, said first-named
tween the rim of the globe 3i) and the handle lil.
ends having flanges at their extremities which
This seal, in cooperation with the seal provided
overlie segments of the base ring to maintain the
by the soft rubber sleeve 8, functions to prevent
named parts assembled, said opposite ends each
iniiammable gases or vapors from entering the
being provided with oppositely projecting ears
chamber within which the bulb 3l is disposed.
which extend generally parallel to said side mem
The bulb receiving socket 35 is held in its assem
bers, and a pair of assembly rings disposed on
bled position within the opening lûb by means
opposite side of said opposite ends and respec
of assembly elements 3d which bear against the
tively provided with spaced-apart apertures
upper surface of the flange 35a, overlíe the rubber 25 therethrough through which said oppositely ex
washer 32, and are held in clamping engagement
tending ears extend, said ears also having flanges
with the upper edge of the socket 35 by clamping
at their extremities which overlíe segments of
screws 33 which are threaded into the flared por
said assembly rings to maintain said side mem
bers and assembly rings assembled together.
tion ma of the handle IB.
The modified structure shown in Fig` l5 of the
3. A portable lamp guard comprising a base,
drawings is substantially similar to that just de
e, plurality of side members provided with ends
scribed, the principal difference being that in the ,
attached to said base and with opposite ends
Fig. 15 arrangement, the soft rubber Washer 32
which converge at the extremities thereof, said
serves the two functions of providing a hermetic
opposite ends of said side members each being
seal between the handle I0 and the globe 30 and 35 provided with oppositely projecting integrally
of resiliently supporting the lamp socket 35 with-A
formed ears at its extremity which extend gen
in the handle it to minimize the transmission of
erally parallel to said side members, and a pair of
mechanical shock or vibration to the lamp bulb.
fiat assembly rings disposed on Opposite sides of
In order to enhance the action of the rubber
said end extremities to extend transversely of said
washerl >32 in performing the last-mentioned 40 side members and respectively provided with
function, this washer is provided with an up
spaced-apart apertures therethrough through
standing annular portion 32a of greater longi
tudinal thickness than the remaining portions of
the washer. At the upper edge thereof, the
washer portion 32a supports the annular rim of 45
which said oppositely extending ears extend, said
ears being provided with flange-like portions
the lamp socket 35 in a manner such that the side
walls of the socket are displaced from the inner
parts in assembled relationship.
4.-In a portable lamp unit, the combination of
surface of the opening Iûb within the handle' I0.
Assembly screws 33 and clamping elements 34, in
combination with spacing columns 36, are utilized
to clamp the socket rim 35a to the platform sur
face lûf of the handle l0 through the thickness
of the annular washer portion 32a. More spe
cifically, each spacer column 36 is in the form of
which overlie segments of their associated as
sembly rings in order to maintain the named
a handle having a flat annular seat at one end
thereof for the reception of a guard thereon, and
a guard comprising a plurality of hard fibrous
parts including a flat base ring with spaced-apart
apertures therethrough and adapted to be
mounted upon said flat annular seat of the
a sleeve telescoped over one of the assembly
screws 33 and is provided with a tapering upper
handle, a plurality of side members each pro
vided with an end of reduced cross-section ñtting
within and extending through one of said aper
surface, such that a knife edge support is pro
vided for the associated clamping element 34 at
ber end is substantially coplanar with the bottom
the end thereof furthest removed from the pe
tures so that the end surface of said side mem
surface of said nat base ring, said side-member
Thus, a 60 ends having flange-like portions which overlíe
simple arrangement is provided by which the
segments of said base ring within said apertures
lamp socket 35 is resiliently supported upon the
to retain the side members and base ring rigidly
handle I0 to prevent mechanical shocks from be
, assembled together but positioned so as not to
ing transmitted to a bulb or lamp supported
interfere with the mounting of the flat base ring
therein.
on the ñat annular seat of the handle, and as
While different embodiments of the invention
sembly means at the opposite ends of said side
have been disclosed, it will be understood that
members including a dat ring apertured to re
ceive corresponding end portions of said side
various modiñcations may be made therein,
members extending therethrough with the outer
which are within the true spirit and scope of the
invention.
70 ends of said end portions being upset to main
tain said assembly means and said side members
I claim:
in assembled relation.
l. A portable lamp guard comprising a base, a
5. A portable lamp guard comprising a base, a
plurality of spaced-apart side members provided
plurality of side members provided with ends
with ends attached to said base and with oppo
attached to said base 'and with opposite ends
site ends which converge at their extremities, said
ripheral edge of the socket flange 35a.
2,413,417
13
Which converge at their extremities, said side
members each being provided with integrally
formed oppositely extending ears at its extremity,
assembly plates disposed on opposite sides of said
end extremities and respectively provided with
spaced-apart recesses within which lsaid ears are
anchored, said plates having aligned openings
therethrough, a, suspension hook having an end ~
portion which extends through said aligned
openings and is provided with a shoulder
abutting the one of said plates farthest removed
from said base, and means coacting with said
hook end portion and the other of said plates for
securing said hook to said plates.
'
14
notches substantially at the Junctions between
the straight and curved portions thereof, a top
member attached to the converging extremities
of said side members, a light reflecting element
disposed Within said side members and provided
with one edge bearing against said base ring and
with an opposite edge anchoredywithin at least
a portion of said notches, and means for anchor
ing said element along said one edge.
8. A portable lamp guard comprising a base
ring, a plurality of spaced-apart side members
provided with ends attached to said base ring,
said side members having straight portions and
curved end portions which converge at their eX
6. A portable lamp guard consisting entirely 15 tremities and being provided with notched por-`
tions at corresponding points intermediate the
of stamped out parts formed of hard fibrous ma
ends of said straight portions, at least a portion
terial and comprising, in combination, a ñat base
of said side members also being provided with
ring provided with a plurality of spaced-apart
inwardly disposed notches substantially at the
apertures therethrough, a plurality of side mem
bers each provided with an end of reduced cross 20 junctions between the straight and curved por
tions thereof, a top member attached to the con
section fitting within and extending through one
of said openings so that the end surfaces thereof
are substantially co-planar with the bottom sur
verging extremities of said side members, a brac
ing ring provided with notched portions inter
iitting with the notched portions of said side
face of said base, said notched ends being pro
vided With flange-like portionswhich overlie seg 25 members to restrain said side members against
relative lateral movement, a light reflecting ele
ments of said base ring within said openings to
ment disposed within said side members and
retain said side members and base ring inas
provided with -one edge bearing against said base
sembled relationship, said side members being
ring and With an opposite edge anchored within
provided with opposite ends having integrally
formed connecting portions at their extremities,
at least a portion of said notches, and means
a fiat top member extending transversely of said
vincluding a ñanged portion of said base ring for
anchoring said element along said one edge.
9, A portablelamp guard comprising a base
ring, a plu‘rality of spaced-apart side members
provided with ends attached to said base ring,
said side members having straight portions and
side members and provided with spaced-apart
openings therethrough throughwhich said con
necting portions extend, said connecting portions
being provided with flange-like .segments which
overlie segments of said top member within said
last-named openings to retain said top member
and side members in assembled relationship, said
side members also being provided with external
curved end portions which converge at their ex
tremities, at least a portion of said side members
also being provided with inwardly disposed
notched portions at corresponding points along 40 notches substantially at the junctions between
the lengths thereof, a continuous bracing ring
adapted to be telescoped over the said opposite
ends of said side members and provided with
internal notched portions interñtting with the
notched external portions of said side members
to restrain said side members against relative
lateral movement, and a Waterproof and »ad
hesive coating enveloping all exposed surfaces
of all of the named parts of said guard.
7. A portable vlamp guard comprising a base r
ring, a plurality of spaced apart side members
provided with ends attached to said base ring,
said side members having straight portions and
curved end portions which rconverge at 4their ex
tremities, at least a portion of said side members
also being provided with inwardly disposed
the straight and curved portions thereof, the
extremities of said curved end portions of said
side members being provided with integrally
formed oppositely projecting ears which extend
generally parallel to the straight portions of said
side members, a pair of assembly rings disposed
upon opposite’ sides of said extremities and re
spectively provided with spaced apertures there
through Within which said oppositely extending
ears are anchored, a light reflecting element dis
posed within said side members and provided
with one edge bearing against said base ring and
an opposite edge anchored within at least a por
tion of said notches, and means for anchoring
said element along said one edge.
`
f
_
RUDOLF POPP.
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