вход по аккаунту


Патент USA US3026419

код для вставки
March 20, 1962
N. DElscH
Filed Aug. 2l, 1958
N3 V48
5 Shee’us-Shee’rI 1
March 20, 1962
Filed Aug. 21, 1958
5 Sheets-Sheet 2
FÍG. '11
FIG. 5
Noel Deis ch
his Attorney
March 20, 1962
Filed Aug. 2l, 1958
5 Sheets-Sheet 3
FIG. 6
79 7
.96 .95
FIG. '7
FIG. 10
Noel Deisch
his Attorney
Patented Mar. 20, 1952
>flashlamp itself completely within the general structure
of the stand, while yet retaining the adjustability of the
Noel Deisch, '799 Monroe St. NE., Washingttm‘,- Ddl.
lamp through a wide range. A pocket or sheath is dis
posed to receive and protect from accidental injury the
folded fan-type reñector of the lamp when the stand is in
' Filed Aug. 21, 1958, Ser. No. 756,479
‘ä Claims. (Cl. 24M-1.3)
the collapsed position.
The present invention relates to photographic illuminat
ing equipment, more particularly to that kind of ñash
apparatus known looselyv as the “main light,” and its
primary object is to provide a light of this character which
The coordinate »arrangement of the various organs
which constitute a complete _flash “main light” as herein
described results in an assembly which greatly promotes its
general utility and the facility with which it _may be
is better adapted to its functional ends through being
less subject to mishap and more' completely self-contained
brought into use.
than apparatus currently available.
Another object of the invention is to provide a co
ordinate system of wiring for a flash-lamp assembly in
which the outside lead to the lamp head is eliminated
and the manipulation of the extension cord `is simplified.
An additional object of the invention is to provide a
Vfiring connection for the flash-lamp which is integral with
4the mast of the vlamp stand.
tion, be particularly pointed out in the appended claims
and be illustrated in the accompanying drawings," in
FIG. l is an isometric view of the erected flash stand,
the extension cord being shown partly loosed'from‘ its
reel and making connection with a power and triggering
' A further object of the invention is to provide an im
unit indicated in diagram.
FIG. 2 is a front elevational view of the completely
proved 4electrical connectionrbetween the lamp lead and
Y the lamp mounting.
The foregoing and other objects and advantages of the
invention'will appear hereinafter inthe'detailed descrip
folded flash stand.
FK?. 3 is a side elevational View of the folded stand.
Another object of the invention is to provide means for
FIG. 4 is an enlarged detail sectional view »taken on the
including and retaining the extension cord as part of the 25 line `4_4 of FIG. 2 but with some parts in a different
main light assembly `while yet avoiding interference with
position of adjustment, and >shows especially the ñashlamp
the movement _of the adjustable base of the stand.
socket and the upper part of the nested mast.
Another object of the invention is to provide means for
FIG. 5 is a transverse sectional view‘taken on the line
protecting thev collapsed reflector blades of the ilash lamp
5_5 of FIG. 4, showing details of the flash lamp socket
from injuryduring transport or handling.
As a prefatory clarification it may be mentioned that
in setting up for a multiple flash exposure, theflash lamp
is, typically, iirst attached to its supporting stand by
means of a bracket, the firing cord is attached to the lamp,
the stand is positioned and elevated tothe desired height, 35
and sufficient cord is undone from a coil or loosed from
FlG. 6, which shows the lower part of the nested mast,
is a view supplementing FlG. 4, being likewise a section
taken mainly on the line d-fl of FIG. 3, having however
some parts in fragmented section and in elevation.
FïG. 7 is a detailed elevational view corresponding to
FIG. 2 but drawn on they same scale as FIG. 5 of which
a reel to span the distance between the lamp and the
latter figure it is largely an eluoidation, and shows fea
firing unit, where its free end »is plugged in to complete
` tures of the electrical connections at the base of the stand,
the' connection.
the cover plate of the wire inlet fitting being removed.
necting cord which extends from the lamp mounted at the
lin-e ä--ä of F'IG. 3, showing especially the reflector blade
protecting shield and its attachments.
It is a common experiencethat that portion of the con 40
top of the flash stand down to the door is frequently a
FIG. 8 is an enlarged horizontal section taken on the
cause of accident and annoyance, especially when the lamp
FIG. 9 is a horizontal section taken on the line 9--9 of
is stationed quite high, say near the ceiling, since if it be
FlG. 3, but with the mast in the extended position, and
vnot carefully laid, or if it be not of adequate length, the 45 shows details of the base wiring connections.
cord slopes away from the stand and may so unbalance
LFIG. l() is a largely sectional detail view showing the
it as to cause the stand to fall; the dangling cord may
relation'of parts at one of the mast joints when the mast
moreover be snagged orjtripped upon to occasion the
is in `>itsfully extended position.
Vsame mishap.
-FIGQll is an »isometric view of a two-part insulating
It isa feature of the present invention that the trouble» 50 insert, shown in its assembled positionin FIGS. 4 and 5.
some portion of cord above referred to is eliminated, the
Referring now in detail to the drawings, in which like
conductor which it represents being in lfact made integral
with the mast of the stand. vTo the above end the cord
or conductor connecting the flash lamp with the firing unit
is >divided into two distinct sections having mutual Ícon
nection at the base of the stand, one section, above
referred to, extending from the flash lamp at the top yof
the stand to this lower junction point, and the other
extending from the point of junction to the firing unit,
usually placed at the camera.
reference characters designate like parts, there is shown
generally a collapsible tripod base or support 1 (FIG. l)
supportingin vertical position an :adjustably extensible
stern or mast 2 which carries swiveled at‘its upper end a
flash head 3, this including a lamp socket ’él having elec
trical connection with a more or less rerrmtelyv located ñr
ing assemjblyS through a conductor 6 divided into sec
tions comprising (1) a length 7 of conductor coextensive
with the mast, and (2) a second length S represented by
The second section of conductor as above defined, which
may conveniently consist of a cord fro-m 25 to 5@ feet
the extension cord ggnominally carried on a reel or holder
long, is according to the invention herein described nor
the liash head 3 in its’folded position. `
mallycarried on a reel attached to‘or existing as a part
of the‘lower frame of thestand. The reel is so mounted
that no interference withthe opening of the legs of the
stand can take place. Since thus the two portions of con
n ductor constitute a permanent part of the stand itself, the
>only electrical connection that must be> made when setting
up is the _one of'plugging-inl at the ltiring unit.
¿Means havelikewisey been Adevised to incorporate lthe
1t?. A «guard arm ll receives the foldable reflector l2 of
More particularly the support 1, of conventional con
struction, comprises acentral tubular body or ’barrel 13a
having secured at its lower ‘end as `by a screw 14 a
mounting bracket or base casting 15. A sleeve or collar
i6 encircles the ‘barrel 13a >and is easily' slidable along
its length. Pivoted between the split bosses or twin ears
70 i7 that project radially from this sleeve, and depending
kfrom it, are the supporting legs 18. Similar ears formed
in the casting 15 serve to'pivot the lower'erids of the
portions of which are loosely cramped between the wall
braces 19, whose upper ends are pivoted to the legs 18l
40 and the rear end 43 of a tubular insulating tube 44
of Bakelite or similar material.
at a median point 2@ in their length. By reason of the
geometrical relations of the parts in the linkage just de
scribed, movement of the sleeve 16 downwardly along
The insulating tube 44, which iits tightly within the
cup 31, is retained by the aforementioned screws 33, the
latter being threaded through the strap 32, through the
the length of the barrel 13a coordinately extends the
lower or restin gends 21 of the legs 1S from a position
cup 31, and into the tube 44, permanently holding the
near the central axis of the barrel to a chosen radial
three parts in ñxed relation. Mounted within the in
distance from this axis, providing a stable 3~point base
sulating tube 44 is the metallic sleeve-like liner 45, pref
of desired reach or span. Conversely, moving the sleeve
16 upwardly to the limit of its travel retracts the legs 10 erably formed of spring brass, the opposite free ends 46 ,
of which are evected to ii‘t tightly within corresponding
18 and their braces 19 to a position closely adjacent and
annular grooves 47 formed in the inner side of the cylin
parallel to the barrel. A clamping screw 22, which is
der 44, to anchor the liner 45 tightly to the ring. A
threaded through the sleeve 16 and `tightenable against
clasp comprising three spring-like contacting tongues 48
the barrel 13a, serves to Íix the legs at a desired position
struck inwardly from the waist portion of the liner 45
and having integral attachment with this liner at their
roots 49, and corrugated or threaded along their free
of adjustment or to lock them securely when collapsed.
The barrel 13a, besides constituting the king-post for
the base 1, serves also as the main or body member of
the extensible mast 2. This last also is largely of con
ventional design, its upright stern being divided into a
plurality of mutually telescoping sections, the number of
sections depending on the speciñc ñeld of Work which
the Hash stand is designed to meet. There are here shown
live sections, comprising a series of concentric tubes of
length, -accept and hold securely the matingly threaded
base 50 ofthe ñash bulb 51.
As before noted, the llash lamp structure just described
has electrical connection to a junction point at the 'base
of the stand through means integral with the ,mast itself,
the body of the mast constituting one leg S2 of this ñrst
portion 7 of the flash lamp circuit, the other leg 53 of the
13a, 13b, 13C, 13d, and 13e. An `annular free space 25 same portion '7 of the circuit, presently to be described
in detail, being cased within the mast;
23 which may convniently be of approximately 0.05”
Again referring to FIG. 4 it will be seen that the con~
thickness is allowed between the inner diameter of any
tacting tip 54 at the base 50 of the ñash bulb` 51 makes
given tube and the outer diameter of the next adjacent
iirm contact with the central portion of the spring-legged
tube for purposes which will presently become apparent.
Each of the tubes 13a, 13b, 13C, 13d and 13e is capped 30 spider 41, and is thus grounded to the cup 31 and hence
to the conductor 52. 0n the other hand the outer or
at its upper end by a head or bushing 24a, 24h, 24C,
threaded contacting piece 55 of the flash bulb 51 makes
24d and 24e, this cap being held to the tube with a
contact through the tongues 48 with the conductor 53,
tight force lit or by other suitable means of attachment.
as now described.
The top wall 25 (FIG. 10) of the caps 13a, 13b, 13C
and 13d is drilled centrally to form an aperture 26 of a 35 Referring to FIGS. 4 and 5, it will be noted that the
sleeve 45 carries at its lower portion a reed or contacting
diameter sufficient to pass the immediately inner mating
brush 56 struck downwardly out of its body and extend~
tube with a close but free sliding fit. Each of the tubes
ing with wide clearance through a slot 57 formed in the
13b, 13e, 13d and 13e carries a short expanded or en
bottom portion of the tube 44 and of the cup 31. The'
larged section 27 at its bottom end, the external diameter
of which is'such that the outer surface of this expanded 40 brush 56, urged downwardly through its own elasticity,
makes Íirm contact with the arcuate peripheral surface
section forms an easy sliding fit with the unexpanded
58 of a collector or'contacting piece 59, the latter being
inner wall of the next outer tube. As the tubes are
insulated from the mast ‘2 by means of the' composite
moved longitudinally along their common axis in mak
insulating insert shown most clearly in FIG. ll. The
ing an adjustment of height, each tube is steadied both
at its base and at that point in its length which is in con 45 head cap 24e of the section 13e of the mast 2 is chan
progressively decreasing diameter designated respectively
tact with its mating bushing to ensure a smooth mutual
neled or slotted at 60 to receive the insulating insert 61,
this latter being ñrst assembled with the above-men
movement. At the uppermost limit ofV its travel (FIG.
tioned> collector 59, the ñat body portion 62 of which ñts
10) the shoulder 28 of the expanded section 27 of any
between the two leaves 63 of the insulator 61, receiving
of the several tubes 13b, 13C, 13d and 13e is brought
to abut against the inner shoulder 9 of `the cap 24a, 50 the short cylindrical core insulator 64 in the holes 65
formed in the leaves 63 and in the collectorr59. This
241:, 24e and 24d of the next outer tube, preventing any
assembly of two-part insulator and collector is forced
section of the mast from becoming inadvertently disen
into the slot 60, with which it forms a close ñt, and its
gaged from any other by reason of a hasty adjustment
held delinitely in place by the insertion of the clamping
of height. A clamping screw 30, which is threaded
through each of the bushings 24a, 24b, 24C and 24d, 55 bolt 30. It is apparent that when, in use, the flash-lamp
head 3 is made to swing about the axis of the bolt 3U
serves to secure the sections of the mast at any position
to secure an adjustment of vertical angle of the larnp‘
Within their limits of travel. By these means the flash
axis, the brush 56 slides over the arcuate edge 58 of the
head 3 may be positioned at a desired height according
collector 59, maintaining contact at `all angles. The
lto the requirements of the particular location or setting;
and by the same means the sections of the mast can 60 brush 56 is protected from mechanical injury by the
surrounding structure.
for purposes of portability be quickly nested together to
Depending from the body portion 52 of the collector
form a compact package.
59, are legs 66 which extend through ~a slot 67 in the
The socket 4 of the ñash head 3 has a main cy1in~
base of the insulator 61. These zlegs are nominally
drical cup-shaped lbody portion 31, over which fits a
retaining strap or saddle 32 secured to the cup 31 by 65 sprung somewhatoutwardly from the position shown in
FIG. 4, and may be provided with pointed or rounded
screws 33. The depending ends of the saddle form ears
leading edges 68 to facilitate assembly. As the collector
34 which clasp the opposite flat sides 35 of the square
cap or head 24e of the terminal section 13e of the mast
2, being held thereto by a clamping screw 37 which
assembly is forced into the `slot in the manner above
noted, the legs 66 enter Within the interior of the mast
passes through a transverse drill-hole 38 in the ears 34
and make hrm contact therein with the conductor 53 as
and in the head 24e, the screw being provided with a
wing-nut 39 to facilitate angling adjustment and clamp
hereafter made plain.
Referring now especially to FIGS. 4 and 6, there is
ing. The cup 31 is closed at its rear end by a wall 40,
and against the inner side of this wall is caged a metallic
shown a nested series of mutually telescoping metallic
tubes of progressively decreasing diameter 69a, 6%, 69e
spider 41, having backwardly sprung legs 42 the foot 75 and 69d. Each member of this family of tubes, here
:referred to generally as the core tube _70‘ and _identical
rubber sleeve 88 to resist chaiing of the cord at this
with _the conductor 53, fits rover the next in_ner member
_point by prolonged use. The lower part of this sleeve,
Vtogether with dthe inner extremity 39 of the cord 9‘ which
it envelops, is clamped tightly between the serrated seat
90 formed at the side of the base casting 15, and the flat
with a close but easy sliding fit.
The outermost or
largest of these tubes 69a, is .throughout its length held
tightly within thesmallest orend _section 13e ofthemast
2, being electrically isolated therefrom by means of an
vinsulating tube 71 of hard laminated `tì‘breor 'similar sub
stance. The diametral dimensionspfthe mast tube 13e,
of the insulating tube ‘71,_and _of the conducting tube
69d are so related that ywhen assembled under pressure
rear face 91 of the lower wire bracket 82, the wire
or conductor 92 which forms one lead'of the cord being
these three parts mutually combine to for-m a laminated
' tube of substantially integral mechanical structure and
wire or lead 96 of the cord 9 passes through >a hole 97
through its terminal lug 93 secured, within the recess
95, to the base casting 15 by the screw 94, thus making
contact with the first leg 52 of the lead 7. The second
consequentlyof enhanced mechanicalstrength.
Each one of the sections 69h, _6_9cand- 69d ofthe core
tube 70 is, as shown in FIG. >6i, _gripped _at its bottom 15
end bysan insulating bushing 72, _thebushing _itself being
in the base casting 15 and in the wall of the barrel 13a,
its terminal lug 98 being secured under the retainingnut
77 of the rod 74, to complete electrical contact with the
second leg 53 of the lead’ï. An insulating disk_9‘9 and
a protecting cover plate 100 are pressed -within the
socket nlill formed in the base of theV casting v15 after
tightly.A held .within `the _encircling _wall of the enlarged
portion 27 of the corresponding mast tube 1312„13c'and
13d. A portion ofcement y73r may if desired be placed
It will beunderstood that the free end 182 of the
between the conducting tubes _6911, _69e and„69d___and 20 extension cord 9 is >iitted with a connector 1tl‘3`by which
the corresponding bushing 72 mountedon them, as also> its two leads 92 and 96 may be plugged in to make con
tact with a tiring unit such as the wholly conventional
between the _bushings 72 and _themast tube _13e etc. _in
which the bushings 7_2 are mounted, _to act as_a lubricant
during assembly _and to assure a _thorough bond :after
and merely exemplary arrangement sketched indiagram
at 5 in FIG. 1, where 104 represents la camera shutter
hardening. The smallest core tube 69d _receives in its 25 including a synchronizing switch or contactltiS, con
bore a rod 74, the lower threaded _end of which passes
nected through a synchronizer cord 1de to the power Vas
through a central hole 75 in _the bipartite insulatingin
sembly including the ¿l5-volt battery/’107, the"300 mfd.
sert 76 and is clamped thereto _by the nut 77 _acting
condenserlllS, the 4700 ohm resistance 109 and the
against the ñxed collar `78_mounted thereon. The insert
leads 110, which last `make connection Vthrough the
.76 lits tightly within the main body tube 13a of the
pronged connector 1&3 to the leads 92-and96 of the
stand, being cemented thereto` at its edges if desired,
as at 79.
It will be understood that the complete core
~tube 70 together with the rod 74, constitutes the second
line y9.
To prevent unwanted uncoiling of the extension cord
v9, an elasticrretainer, which may consist of a coiled
spring (not shown) or of a rubber band as indicated at
35 111 in FIGS. 2 and 3, and which has attachmentat 112,
is looped about the connector 103 to hold `taut vthe ter*
leg 53 of the first section7 of the conductor 6. To
vassure definite electrical contact _between the various
members of this set of tubes at all times, the upper
minal or free end 102 of the cord 9.
end of the rod 74_as_also of each of the tubes 69h, 69e .
and 69d is split to form tongues80 which are _given
Referring back to the structure shown in FIG. 4, it will
an outward set tothe end that the tongues of anytube
be noted that the cup or body portion 31 of the flash
bear iirmly against the inside wall of the next outer tube 40 lamp socket 4 bears at its front or open end two spaced
at any relative position of the tubes.
flanges or retaining rings 113. Loosely held in the an
From the above it is. clear that `in making any adjust
nular trough formed between these flanges are the 'stacked
ment of length of the mast 2, the two legs of the con
ring-like root or anchor portions 114i» of a plurality of
ductor 7 (including as its one leg V52 the telescoping
blades 115 of the foldable fan-type ñash reflector 12
_sectionalmastà and as its other leg53 the inner tele 45 of well-known conventional form. These blades when
scoping sectional core 70) are coordinately shortened or
folded, `as shown in FIGS. 2 and 3, form a compact sheaf
extended, and that in completing such adjustment of
117, and the lower end of this sheaf, when the mast 2 is
length by tightening the Iclamping screws 31 of the sec«
collapsed, enters into the mouth 11S of the guard or
sheath 11, where the blades are held closely together
tions 13a, 13b,-13c,~13d and 13e of the mast 2, perfect
electrical contact throughout this ¿section of conductor 50 and are guarded from accidental injury as long as the
is assured without separate attention.
mast is retained in the collapsed position, but as soon as
themast is slightly extended in setting up the stand the
The extension cord 9, of substanial lengh,_wl1ich _con
situtes the second section‘ä of the Hash-lamp operating
blades are automatically released. The guard 11 has
circuit, is normally held in position «for use by being
the form of :a generally rectangular cup with walls of
wound or looped about two hooked or J-shaped brackets 55 substantial section, its back wall 119 as shown most
«81.and82 which,.together,- with their supporting frame
or base 13a, constitute the reel 10. The upper of these
brackets, 81, is secured at its upper end by a` screw
S3 to the head 24a of the barrel 13a, its shank portion
A plainly in FIG. 8 being attached «at its upper end by
rivets 120 to oppositely extending ears 12.1 formed in
tegrally with the head of the bracket 81. As illustrated,
the cup or guard 11 may be made of such depth as to
84 4being placed outwardly from the axis of the barrel 60 receive only the lower portion of the sheaf of blades 117,
13a a sufficient distance to give good clearance to the
but of course if desired the walls may be extended up
tripod leg adjusting sleeve 16, as shown clearly in FIG. 8.
wardly to envelop these blades to their roots.
Having described my invention, I claim:
The bracket 81 is moreover so positioned with relation
l. Photographic lighting apparatus comprising an elec
to this sleeve that its shank 84 lies «between the bosses
or bearings 17 of the sleeve, to the end that movement 65 trically conductive base, an electrically conductive mast
supported by and telescopingly mounted for extension
of the sleeve can not occasion interference with the
and retraction in and electrically connected to said base,
The lower bracket 82 is attached to the base casting 1S
a flash-lamp holder pivotally mounted on and electrically
by the screw 14, and the bottom section 86 of its shank,
connected to an upper part of said mast and having a
which lits closely between the guides or bosses 87 formed 70 collapsible reflector, a guard mounted on said base and
at the side of the base casting 15, serves as cover-plate
disposed to receive said reflector on collapse thereof and
for theterrninal attachments of the cord 9. The particu
telescoping of said mast in said base, a telescoping elec~
lar arrangement employed is detailed in FIGS. 5, 7 and 9.
trical lead formed of a plurality of sections slidably
It will be noted that the extension cord 9 carries at its
mounted one within another and electrically connected to
point of entrance into the base of the stand a reinforcing 75 said lamp holder, said lead being in and insulated from
eter than andy sliding over a nextlower section, said inner
spar having» corresponding sections mechanically con
ì nected at their lower ends to sections of said mast by elec
said baseÍ`and mast and extensible with said mast, a coil
able electrical cord electrically connected to said baseand lead, said cord being secured at one end to said base»
tiically insulating supporting bridge' means, and‘said con
and carrying a connector at its opposite end, and rneans> `
ductor forming with said mast ingoing and outgoing elec
on said base for holding .said cord in coiled condition.
2. Photographic lighting apparatus comprising an 'electrically conductivebase, an electrically conductive mast.
supported by and telescopingly mounted for extension and
trical connections to said flash-lamp holder. »
6. ln a photographic lightingv apparatus including a
base supporting a telescopic mast formed of a plurality
of sections slidably mounted one within another and hav
' retraction in and electrically connected to said base, a.
flash-lamp holder pivotally mounted on and electrically'
ing lmounted thereon a Hash-lamp holder, the improve
connected to an upper part of said mast, a telescoping:
electrical lead electrically connected to said lamp holder j
mounted on said holder about a socket thereinîand hav
and formed of a plurality of sections slidably mounted
one within another, said leadbeing in and insulated from ‘_
ing its blades foldable and unfoldable’about said socket,
and an upwardly opening open-mouthedicase attachedV to
mentA comprising a multiple-bladed foldable' reilector
said base and of a size to receive and receiving the folded
blades of said rellector when the mast is retracted, said
case automatically releasing said blades on extension of
said base and mast and eXtensible with said mast, a coil- ~
able electrical cord electrically connected to said base
'l and lead, saidV cord being secured at one end toV said base
and carrying a connector at its opposite end, and means. y
said mast.
7. In photographic lighting apparatus having a base
on said base for holding said cord in coiled condition.
3.' Photographic lighting apparatus comprising an elec-y
trically conductive base, a telescoping mast supported by‘
and a mast telescopingly mounted for extension and re
traction in said base and carrying and electrically con
nected to a llashlight holder, the improvement compris
and electrically connected to said base and oarrying‘and "
electrically connected to a vflash-lamp holder, said mast ` - c ing a telescopic conductor electrically connected to said
,holder and formed of a plurality of sections slidably
including electrically conductive and connected sections ‘
slidably` ‘mounted- one within another for adjusting said `
¿mounted one within another, said conductor being in and
holder tocdilferent.heights- `above said base, a telescoping @electrically insulated from said base and mast -and form
electrical lead _formed of a plurality of sections slidably' . ` fing therewith electricalleads to said holder.
mounted one within another, ksaid lead‘being in and in-V ~ 1 - Y 8. In photographic apparatus having a base and a mast
sulated from and extensible with said mast and electricallßr _` _ " A>slidably mounted for extension and retraction in and elec
connected t-o said 'flash-lamp holder, and an electrical cord
trically connected to said base and carrying and electrical
electrically connected to said base and lead, said cord l ' t ly connected to a flashlight holder, the improvement com
fíprising a telescopic conducto-r electricallyrconnected to
having one end permanently lixed to said base and bear
ing at its other end a connector for making contact with i sald holder and formed of a plurality of sections slidably
’ j rnounted one within another, Asaid conductor being in and ,
a flash-lamp triggering unit.
4. Photographic lighting apparatus comprising an elec veelectrically insulated from said base and mast and form-
trically conductive base, a telesc-oping mast supported by
and. electricallyconnected t-o said base and vcarrying and
ling therewith electrical leads to said‘holder, and a llexible
electrical 'cord secured at one end to said baseand having
I a plurality of conductors electrically connected one to
electrically connected to a flash-lamp holder, said mast
including a plurality of electrically conductive land con - -Üsaid base` and mast and another to said telescopic con
nected sections slidably mounted one within another for any ductor. ,
adjusting said holderto different heights above said base,
and a telescoping conductor including a plurality of elec
trically conductive and connected, sections slida-bly~
mounted one within another, said conductor being con
tained within and electrically insulated from said >base
and mast, and saidconductor being electrically connected
» References cited in the me of this parentV
‘at one end to said flash-lamp holder >and connectible at ` f 2,000,743
its other end to an outgoing triggering unit.
5. Photographic lighting apparatus comprising an eX
tensible mast, a hash-lamp holder mounted on and elec- . `
trically connected to said mast, said mast including a
plurality of conductive and connected tubular sections
each of less diameter than and sliding in anext lower Í"
section, and a telescoping inner spar electrically connected
to said holder and including a like number of electrically
conductive and connected sections each of greater diam- '
Connell ________ __'____ __ Aug. 21, 1894
Reeves ______________ __ Mar. 8, 1921
Dickey ______________ __ Dec. 6,
Cohen _______________ __ May 7,
Hawkins _____________ __ Dec. 23,
Ostrom ______________ __ July 4,
Bertrams _____________ __ Feb. 5, 1957
Riches _______________ _. Mar. 18, 1958
' Fischer ______________ __ Mar. 3, 1959
` l
Great Britain _________________ __ 1882
Без категории
Размер файла
1 051 Кб
Пожаловаться на содержимое документа