xt7rjd4pnq3r https://exploreuk.uky.edu/dips/xt7rjd4pnq3r/data/mets.xml William B. Duck Co. 1919 Includes index.Folded revised price list inserted. From the Samuel Wilson Collection (Special Collections copy). Call number  TK7870.3 .W5 1919. books  English Toledo, Ohio: William B. Duck Co. Contact the Special Collections Research Center for information regarding rights and use of this collection.  Catalog no. 12: The William B. Duck Co. Anything Electrical Wireless Instruments, 1919 text Catalog no. 12: The William B. Duck Co. Anything Electrical Wireless Instruments, 1919 1919 2015 true xt7rjd4pnq3r section xt7rjd4pnq3r  »  ;     ‘       ’     ,    '     »      
i   =¢   ~ * a¤  1     
‘   W _ ,    ,A ;     A é;_i—i-;`§ff¢¢t» ]oiig V¢_  béforeihg war; .»‘C¤n$uIt`r¢·_   4
{   beforcorderiiig. ··-»;              
  *»         
   _   ‘;                        ~   
         “    ·                                   
 Q  ~    3           _                    
   :_A   '_!»   . ·;      ¤   » qélq  
  ~ — ·,;v·  A  --»v    r    .“W_     ``» 4`?“`   q »`;v 2 l-lv» V .   l   4    
 ‘,  ,..—       ‘‘`` I v_  `   " AV       -   -v_,         »    
 ?       ¤¤‘Y# G°·  5 42 1 ` 3   ‘.AA» 37       Q T`-Wi li. J I
T   _.   ` _ fw? ff »‘j `  ‘ _ T2  _‘:—_ ,;_:· '#‘· ? - "`* my iu’bi1ying·chcap1y.>   _     _
` V »A·, 4   2   ?""“‘.{`¤¤-‘·     . .   »¤    ~ .
` ? °      ‘,..f· Y  »  ° .  `».   M  *_T"*—€!*That$*6*5P! »--;° S ¤   A‘‘·     Y
A     ·4·6·¥·»é·1··}·¤# 1   —-   ‘`··4‘ °  °H°t°i`°Y’i”° ctw!     ` `
,   . Q . www    4;        -_‘` *rue‘··U,g3i3,sm·=      -
    V · " ` .  $3,;* ° · both as “tbg1bzaufy’ ofshlwmg wt'; »  ~  
’]]|) ·».,. V .. .· W lb .. ..
  ‘ s` »  =`I `   »·d¢**S” ¤¤d ¤tf¢.1eg¢h of . 7, .$»    r
V jj ~. ·       A”,. 3 · ·‘ca:w£rup!i01z. “I€ h‘as·`   J2 “’*4 F   M _
‘ .     ;      "‘V"‘€‘·§_Qj{=ffij‘    XM—é‘ dl B‘é·’bji*‘i1i§s‘,CQ..-—-—··*"*"= " W .. V   ,
  .  _‘     ' "        1 P0werfi1l?S·tAQc‘€rih§   gw   ‘. = )
’ — .,·‘ ‘ _ * V  .   _ Post and Stcc1.Tniss }'» Y};. S `> >··" ·.4,z     Q .
; . 4 _   ` `       , . making it iridéstruc;i-1 _   ‘ * _.  F
.   .   "‘”£§Ifl‘Z’}££§       we me my for me   . .. .. ..   ¤ .
    . -.   · {Qi?   . rqugheéf; king _V`. cf} ..   l‘·"’¤. `     '
        .»»~  ~           `{¤¢·‘t·.¤=siiii§•’.··=·i§& é  ,    ’»‘‘ f r  
      ‘   .` °¤i¢b•¤*’G¤‘i¤¤ €•¤if..LT·     `’ » ay,.    *;
°   - . ~   `V‘' wi"'-’ V· `‘‘     I W'¤*@ I   » `'· · ` . ·.»~% i 5T . ”·“. ‘   · T
  ` B .·»..     . wvet ¤:.·¤s »*P%i¤é’ <=hc¤p~ %~ f  » -.—. .   ‘‘.. »  __ . Q
" · V   ‘ ’   /     l¢$F.· ¤¤r¤¤ ¤¤¤¢¤¤¤*k¢t· .V..   ..V·     %’*  V   =
~ 2 · _ %- · _     ‘*   ‘    V  ’f6r it tdkes _tl1e Nada}  V_.  . ·· " ,   [-1;* `
  »   `     Y  f .   ’ `i. A °A ~» [ . _‘   ._A.‘   * T ‘ ‘ 1, S   1

   lx  '
ggai 
·‘ ° V rr: g
  _ Z I .
 I THE
I`. !.;·`, 'alx
L;¢;$?i 2
  c? `
i   r` _
,,   e
I‘t,?$j,,;y V ` V O
WA'; I  · I I
  . 2; V. L. V I
    ANYTHING ELECTRICAL
‘; F`] _ .4
%ig§€Vf;*=V I »
·.·  x
ib.;:rJ;§*   ‘ ""
  I
,   ~ A
   
 
·$$·%¢€,j· V; ~
€V{J;`?F§‘ ii
  ·  V V V =·=·····—·—·-—-:—-~-·———Y-»—-—-——-——··——-·—--- .`.- ,.`-*..»-..._~,_..
   Ia .      
·’e$x‘?-Z‘=·     ·     ·*,. *   ·’‘· Li ¤’$¥S>·=  ",;” ’5¤:?€» =’»: §`·l.*{;»< xj F     ” if  %L·;fi‘1¥;¤Q_>I;I;      
      ~·-V      
& fri, .   .» ..1 .I»,T;wj‘j,;,,_;,_;_VV_;y-` J;W;—;;_§_;g_____*____—f%`;,—
  ’ .
5 ‘¥s..·2¤.~·’ i ;I /—··   z.; ¢"’ ”·’ —`·c:·     ` ’     ,
‘· wig   né  43 #’¥~ ·'° 5 ~ if,. ’ " I *1%, ~Z" "
Z- ,.51%;:*    · “ ~     :*5** _ · ·*.·i:¥§‘· ` E
‘§,§I f;‘  , rw. .J , `_ rw., A ;=__ "'·
  ,   I ?*»=·»‘» »2   V ·· W i ` ‘‘`j   4.:* ` I
.?· *1 —v" I' V %*?’*V   Mx: "'—»1.=_;·¤ 4 `·»` . I
`_,_   { ji, rz · 7 V ’ ;
  ·  -T.-ITQQIQQLQ   J MET? ?;¢,_- ,634
Ik-€·3’?'   ·. ' ,,._ I wv ··  ,: ·.
 K) N   . {ix CA;-,r*4" ’ ·`T j s    H I I J A m V   '    
  TA     ;·=:·.   °‘$§;I "°”`?~T"YY·Y$Z?.%”X V 2'Y=·-rk- ‘   < *
  `I   my  K   Y   “ "*"+§1
4,* ;_. · A ~  z" yr *~ .» -4 A2?   ,-yy   I   A ,,2.;
§;?¢3;€’f.F ig  T*—g*`#%>x _i  _ , ’   ·`»’ '   _ji§¤—· Q {7    
  ·   K-I   _ ‘£»i{ gy  ;.. ! ‘ i .,¤=.¤¤1·vg:¤¤.»¤-~§;?—7°—fi;2; ‘·.   , S   gi. *2 I
  »   ji  I »         —»N·N  ii-—I
I;1   , Z   ' " V    »_:    ·    
    . Vg ~   i; ». V.  —I   · I ·¤n·~‘. V   i__ yfgl TQj;“:; .
  I *‘   I »  M   y IE? is       ‘ V--<3;£;·; ·$gg:. T ’
M;   · ~· ·‘    ;.—_` - ·. _  "·. K
I Tim I ~.  . _.,-Iz   .,.;,·- . ,;.... »,—2». %< "'G . ~, ~¤- ·»Y U (Q. .-·I
'· **3   ¤· "  i»·¢·¤=   4i'·:—  ‘  ~  ' A »  "   » ‘·if* ii`?  I/inkl r`WmV;§`¢ SF!
  } ;V ~       _ "’*‘?;i&’   —( v * ; `h‘_”V__ ,   _ f4fL»,:    ~' `
s·   J 4· ’ ‘ ———-———;.`............
2++; 5-
  `I:4_V|_I|ilI nl` ¤l\VII' |‘2II5lI¤>;`¥ I'v;4`]}_ ]`;»{· 4]·I]\j·~['y in ww;. ·~ `I,`_`·!·i'.,} _`VVV] V`V_.V_VV_
”<§i····V;5,3, »··>> ¤·11I|I¤1:_<·! 1114- \·\».1·l·1. TAS ·.·,;l, .,,.‘. _,,· __.\_,H _V,|_r
  : · S""I|Y1\'*‘ #I11!·l11¤·t1l>‘ ·I111·m1; |I¤< .11:Ij. purl ·¤1` }.-·x~:»:‘, y·_ ;;~if,_
OIL   ·
·*?.·‘»fI:iig;i I ·
  I
:·..'J%é;v¤· ' .
  I
§>··¤=¤swZ » .
  \ 224-226 SUPERIOR STREET TOLFI}0 OHV
*2  I * a
  1
gvégsvi-z I
~‘I' W?
E5`»E¥··j _.

      
. ·-  <···’i.‘
¢»g§$#1§=l   .  
‘ .·‘·l¢_;·‘_€.1#,_;_
  it 'l‘1ll·1 \\ll.l.lx\l ll. lIii‘l{ (`(>\Il‘\\\`. ’|‘ol.1·tl11». Ullll).
(sl ··` ' J ‘. *77 M 777 rr nr )N 7777 rd? W 77 rrtrrlrr?-_ ‘”
 ·*   ·‘j§`·**#<*.% . .
 .1 THIS IS THE MUST !Nll’()R'l`.»\N'l` l’i\(&}·] IN (Y.»\'l`.·\l.(>(i.
  #2.%: Y . . . . .
if     Our Xours ol EX[)(‘I'lUllL'(‘ l’rnv1-s ll; ho l’l0u>u= Rand Every \\ ord on this
.—   .’», ,  Page lioluro ()l`(li‘l'lIl§[.
if  Z'__!
§;~~..m°_é;_·§·}1 HOW '.l`() (>l xw 11os>=1|1l1-. ··1·ow1l I‘lll\ llllS om- 11u;x1· il giwul muuy
T~. ‘»`F.*; 1>1—1·ti111·111. t·, wliivll u luru`1- !lllllll><‘l` ol 1
R  o111‘11:1.L1‘o11s loo 1'>l`l¤“ll i:;uo1··~.
Q ·' Z}.? .,,_ Q. \\'1·il1· your lllllllv uml u1l1l1*1·ss 1¤l:1i11ly. .\lw:1ys uiyo 1·:11ulo;1 1>11;‘1~ of tho 1
· ·;el·€Jj1 ··'·_ Q~ (ll`ll&'lL‘ you o1·¤ I`l'¤>lll 1·u1ulo;:s >···y1·1·;1l y··ur·;= olwl. \\`1· ll`}' to i{1·1~11 uu ;lt‘<'lll'1ll1‘
  1·12<·orlll' lu1·.·st. vululo;
 I _ QZ·_-fiéigq lo 11¢·1·so11s o1·1l1·1’i11; l`1‘o111 {lll ohl ··u1ul•1;·. You 1l1·111·iy1· }'lll1l'St'll`, 1l11·1·1.·l`o1‘e, oi`
1     our ]1ll<3$l lil1—1‘:11111‘1· whou you l`uil 111 :‘i1.‘1- ll¥ lhis l!ll`l1l'lllillll¤1l. No lll2\ll\‘I'
;.·l.`r$,(}·j.{, how of1·.·11 you ¤¤l'l]¤*l' ulyxuys :‘iy1· 1h·‘- 1111111l¤¤·1· ol` <·:11:1io:. N1·y1·1· suy. "S1~ml m=·
 Z   your luicsl. 1·:11ulou‘." 1111l1·:<:< {11*1 slulv tho 'lllllll>1*l' ot` tho 1-:11:1111;* you }l(L\'£‘.
,· ` '"riji. YOU ll\2l}' ll:l\‘<· tho lillosl. \\"Il¤·ll )`¢1l1 Slluzivvi lo )'·111·’ l`!’i1·111l llr \\`l'll¤* for ol1l` 1
Q 4     ('1l.lLl]¤r§`J toll l1im to s·.-ml >1·. :1< you 1li1l ‘.\`1~1·.‘1ll llvvl 1h1·u h1· 11111 l1»il11—il’11l1l1l~·
1   1>l:$<\iIli`l¤l`llllll}.l`llllll. llu uol w1·i11e u< i'o1· »·ou¤11.issio11, s1·1·1·i:1l 1lis1·ou111s, o1· l`o1· I
1,     2l4LY(·ll(‘}' ]'\']ll'('S{'lll2llillll. \\'1· 1l1·ul wi1I1 lh1· 1·o11su1m-1·1li1w·1·1. ilu mu. givo your (
1   Q.}, 1¤I'illfI`ll>2<<>lll<‘ ¤·l¤`·<·l1‘i1·:1l oroll1<·1·1·o11··1·1·11.l···li··\‘111g‘ 1h»·y will 1···1·1·iy1· u 1lis1~o1111l. `
1 "`P   '\\'1e ullow 11o vlisvouuls lo 2lll}'¤¤ll<‘. \\'·~ hum-, wl1··1*1-x‘·—1·iiossihlu <.·li111im111·1l ull ·
_i]:_`{‘v,*Y_g1·’fv. lllllllil<.‘ll»l\‘ll`S prolits. givin; you 1h<· l»1·:1»·li1. ,\\`€>l(i 1l1~luy uml 1-x111·11s1> uml
{   o1·1l<~1j 1l11·1~1·t. _ l
1 ‘,·-,%1;;;j¥ l.)ll4l` 11'~1·111s 1l`l`C 11·.·I vush lo 1·\‘·-1·yo1·[·. l`¤·LL`2l1`4ilt‘SS ol {lll1lll<'lLL1 stumliug.
1 »-—f·_"E;]   1-x1··`~11t111;: 1·1l111·:1111»11:1l uml 1111hli1c i11s1111111o11s, l»<·1·u11s·· =h1~y s<·l¤lom vuu remit
`   *`»‘· gl} (‘2l$l\ i11 u1l\‘um·1·. 11111* low 111·i<·1~s :1111l 1h1· wi1l1· 1·:1¤1:1- ;lll]Ulll<`* of our
`   lulsiuoxs uml 1.111: luruo 11111ul11~1· ol` lllSl\llli<*l)’
  ]»1·ohihil. our U]\<'lIl1I1;` 1·1·<·ll$l‘l<'ri‘< housos. 1·1:p:;11·1ll1»ss of 1
1     ilIlLlIlt'iZll slumliuu. l11 :<1>il·· ol` 1h1·s·· \‘··1y 1~:<11li··iL i11sl1·11<·1i<>11s wu 1lI'l‘ 1·o1i1—
¥5*‘*.‘§?i1v'· 1><·ll1·1l 1.·y<·1·y llily lo l'lfllll'll s·~y1·1·ul o11l··1·>· l`·u· l`:1l111·1· lo i‘¤¤lll~¤>l'Ill 111 1h1·s1· 1·11l1·s_ 1
. _.;'f __ \\'1· will :I’(`2lllll1i1l, pro- ,
· .y_Q}§fl \'i1·1l1·1·. 'l`h1·1·1·
,   is no ·l1·luy ut ull iu lilliuu o1·l' Io iuulao il, us ··usy uml us 1·o11~;1·.1i¤·111 us ]N·$£l1=1l ou o1·1l1·1·$ 1`o1· ·
" ·,;   :$l.111¤ o1· loss, N1¢y1~1· soml 1-oiu. ll is 1111#uI`1- uml is ‘<*'lIl ul your risk, l
‘ F iii. “ Y
  ·.    INSURE YOUR Sllll’)iEN'l`. =
  ru z
  · lu o1·1l1·1·i11;‘ uoolls hy l'Ill'\‘l‘l l'o#1. wo (·;ll`l`|<*Sil§' ]'t‘l'llllll`Il('ll1l lhul )'l>ll A
·,·_j;   lll:¥lll`4' 1h1~ >=l1i1»m1·111 i\1J(llIl5l los~‘lolh<-1· ill <‘·111uo11siI»ilily for uomls will hy 1·1»e·11 muil; lhut is uot i11s111·11l.  
.   \\'l11:1‘1·y1-1· ]\4¤SFll>i1} wv l`l‘L'(>]llIllL‘ll:. \\'1· l1;1y.— `
` .1* hullo\`1~1·1·.’h1·l111iu::1-\‘i1l·-m··‘·==l`y you. ll`
l ‘ W.; g i`i1l`1lll}` rousoli ul. ull you :11*1e uot 1`11Ily rrulislioil with uu}: u1·ti<·l¤· you muy ]WUI‘·
  11 <*1‘l)’ to l`¤‘llll'll it. lo llhl 11u11s1>o1·tulio11 1·l1u1·;‘1·s
1 ,2 ]1I’<‘]lill<|, wilhiu 1h1·1··· mluys :1l`t<.·1· its }.'l‘1'<‘l|ll. uml tho [ul) 1»111·1:hus1· 1»1·i1·1z will
2 {wi ho ]'¤:lvllllll(·: l'<‘1‘¤*l]ll,, whir·h :§;‘ succeeding edition of our catalog, has been to place before our patrons the
mdliiti very best quality of goods obtainable, at prices representing but a smnll
*6 ‘ margin of profit to us. .
'u,ii3i,?,ii’i{ Another factor that makes it a pleasure for persons to deal with us is
gfutjjlj that they are assured of prompt service, 98% of our orders are filled within
ESS of eight hours after they are received by us. We know how annoying delays
’1}&’g;_ are, and fully appreciate that from the moment an order is mailed. whether
l6fI>{£é urgent or not, there is a natural desire to receive it in the shortest possibl:
time. , -
There _ _ _ _ _ _
L_ Wie We desire to call attention in particular to the wireless section of our
‘ _ I) • · · . .
fg? up Cat3l.0g, Wh1€h C0¤fHmS 3 larger and more complete line of high class wire-
PYS for less instruments than will be found in any other catalog published. In fact,
this section of. our catalog is several times larger than many wireless cata-
logs, \\/e believe there is no wireless house in the United States that can
i begin to offer to its patrons such a large variety of wireless instruments
Bfmilxl   of unquestionable worth.
  V° We take this opportunity of thanking our patrons for their generous "
L_ ivvp g patronage, to all of whom we can confidently assure for the future, the
zsklllfggli   same faxr and courteous treatment that has been accorded to them in the
. . ` V. . past.
s mmf. ,
  THE WILLIAM B. DUCK COMPANY,
A
ou. If  
r pur- · 1-`
`L;ll`1'lC(:l r
xharges
ce will PCT `
s ship- I
ble, by _
nd im- * ,
fat _aJ1{y’ . _
  e. _
Ob;] re- l Prclldeut ,

 . = ii
;_._Li_i;j; » ·· ·: ·i.. i. we u   .·; . . ‘
ly ‘; i un uuiiui i nun umn in ioiino muo
  7
a·~·:iM'· '*‘.rr·,·.
  Some of Qur Pa roms
  ”
  Our wireless and electrical goods are in use at over one
  thousand colleges, universities, public schools and other educa-
_.L»·- {·e ,,»1,' V _· • A- _ » V ·
  tional institutions throughout the United States.
""  Will} , . . . . .
  lhe following list has been published in our catalog for over
  live years, and comprises less than 3 per cent. of our patrons
  among such institutions. lt is lairly representative of all our
 gLi;£.,;$.’g_.j=_i patrons.
 .aZ;`»};—;Zi;ié2·;·: . . . .
  tc ;   _ _ . _ O .................... , .
 ‘* University ot Miehivan Ann Arbor Mich
 &;v.t?$*i¥·'·=x.·i Cornell Universitv .................... Ithaca N Y g
  I’urdue University . ............,........... Lafayette, Ind.
  Depauw Uuniversity ........................ Greencastle, Ind.
  Michigan Agricultural College ................ E, Lansing, Mich,
  Missouri \\/esleyan College ....................... Cameron, M0.
 gi  Rhode Island State College ................... Kingston, R. I.
‘ ·,· ,v;·_·_}'Q . . . ` .
 ,£§)j‘.;  University of Pittsburgh ........................ Pittsburgh, Pa.
  l\iIeteorological & Seismological Observatory ....... Cleveland, O.
  l*liltl‘1C€ld County High School ................... Kalispell, Mont.
  Teehnical High School H i b P
  o .. I . ,3 .......................... arris urg, a.
  U. S. Harttord Naval Acadcniy ..........’ . ........ Annapolis, MG.
  So. Dak. State School ol Mines ............ Rapid City, So. Dak.
  Dodge inst. ol Telegraphy .................... Valparaiso, Ind.
 Sai  Milledgeville Telegraph School ................ Milledgeville, Ga.
    Manual Training School ....................... Indianapolis, Ind. ·
  l\Iilwaul<>¤Si¤
 ~=»i‘4:*i=°·`};,y _   ` .  { ij —  lj4,_$52@ University of Minnesota
, , .i`.,.;1s€ , -Q4-eL  .,,y•-__~.·-, ·_  _ . yy, , _
i 1. •—,..,.*.‘ii··g Ii? ·<‘ wxé.,     je.-· Y - , . ..
 *.4 ,.W.,   ’  _ ga n      Iiniveisity of Kansas
`E · ii`, itil   2       Universitv of Missouri
F t { . . f I
,> _._   ·¥»q~€T*, .. W, a;1);§;t-se r;/_ : ak} 3;   E
             
1=  _. rg; Q         ia i f:   F, _.
        `       i
 _;t·_'?-t;*H,_.,i,. i§?%tg!ig;·i°:`;if .i_ r    
    e·.» 2         
*·.*‘{i*.·‘.¤ ‘T   ·· fr" i *·   3?¤?Zt1=<=,·  ·‘¤ * .-~x¤— *° .... .
      V i i  K ’*... ;;,    Our electric sign is considered to be
      one of the most novel and attractive in
    if  '|`olcdo. it shows a duck in the water,
      ducking his head at periodic intervals.
 ;1° ?;l·i°'.i-,   ;_gE§_»’ la' .;  \\'licn in Toledo look for the sign ofthe
    ·*·”   ¤¥&'$$?¤£¥€?¤3@ giciii  Duck, You cannot miss it. 7
_·{_a_Jl?·`nj,  · .
4-il`:. sgi
  ·
  ii;

     A  .,,._v__T§!Q _}!{{·!;[M¤ R- Dutjli UONU'¤\N\'.r'[()Ll·1l)0, oruo.   i
WIRELESS TELEGRAPH INSTRUMENTS ,
cr one E Qn the following pages will be found a complete line of wire- J
d · less instruments for commercial and private installation
e uca- ·
. We claim for this apparatus that it has absolutely no equal
Dr Over   for the price, and that there is nothing better, regardless of price.
Jatrons   Every instrument is of proven worth, and absolutely guaran-
all our   teed to do what is claimed for it. Success in wireless telegraphy
V. means perfect harmony in all the instruments, and scientinc exact-
t Mich { ness in the manufacture of every part of every instrument.
N. Y. Q _That many of these instruments are now being used by the
e,   Llnited States Government, on the warships, and at many commer-
e, ,.11 . cial stations throughout the country is conclusive proof of their
M1:/ih. worth and efficiency and absolutely dependable qualities.
n o. .
R. L Our prices are, we know, lower than the prices of any other
rh, Pa cogcern slellingvwireless equipment of high and distinctive quality
’ ` t . e invite com arison
nd, O- an wor p _
Mont, l   discriminating judgment is a rare jewel. It is the distin-
rg, P; guishingl mark of the successful buyer and seller. It seldom is
S, MCL compelled to profit by misguided experience.
;·   Do not be attracted by hollow, extravagant claims, with so
li? Ga- called rock bottom prices. Some things are expensive at any
r · pI'lC€.
s Ind. D
_’WiS_ _ More than half of our patrons who purchased our high grade
my Pa. wireless apparatus during the past few years were forced to throw
do, IH. gigay the injtrpmpnts firséttpurchased by them, Profit by their ex-
p Neb ence an s ar in rig .
! ' .
L L ~ W'e do not ask that you rely entirely on what we say of our
p 1nstruments;.talk to a few of your wireless friends, and listen to
  what they will tell you about them. Our patrons are our best ad-
  vertisers. Our wireless equipments are in use by scores of in-
; dustrial companies and scientific and educational institutions
  1n the United States and foreign countries, which in itself abun-
I. dantly testifies to the worth and efficiency of our instruments.
  Weguarantee all of our wireless instruments to be free from
pm pc - defects in material or _construct1on, and against electrical break-
itivet in down, not due to misuse or abuse, and will make good any piece
  of apparatus having suchldefects, if returned to use, transporta-
Of thc tion charges prepaid, withinione year from date of purchase. Our
permiision énust be secured in advance, however, before any goods
are re urne .

  qty?} ;r» -
 
 
  6 Tum \\‘|l.1,L\M I!. DUCK (?0)|1·1\N\‘. 'l‘()LlCl)U. 0!I|0.
¤·» _ ’·  ""é4' ” 7 7*   WV" "W"' """' ""'W ”*"_;'
  SHORT WAVE REGENERATIVE SET. ~—~,~e
s Z‘·   `
F; · is  .’ .,»V — ‘  .·.    .r» .: —.»5 r   » °·
  ·¤ >= {  
    ,     M  
ire ‘?{‘¥L» 2:9 . ~¤   ·· .. • . `   **~ » .  »~ · Y. V
:3%%  if    ..4, ·_ ·‘ . <_ __· e   · _ ,e   lhe YVZ
  afi   A       s g _   _ ._ 5 . g` E?  Dearcpij
§f$$ l‘§#» ,§ _. V   ·‘   ;?'gi` Te ¤   . certain
gz; gf; ;_ _' —»__»* *·`=v   rs » .   M .— g  l tive ap
      _   3 .,°‘_,j ‘   ja · · _   that yo
§1;2§ _$; a wt 1 1 * 4‘‘' j· ‘ { »   . _ ·   V '!`!1·
    . i . ..   ¤—‘,¢   .~ ; ·- ’,       rc·<·o111n
 ¤€gz'r,.— "; _ * —   ·_,g ' v,.`       we _   ` _ initiali
  ";   ·‘ r';   _. ’_. -_ 1 j ··     ;___.;_ j_;» - — FY ollicr s
idk ],    ·   “€»"Z" -*62 J   `.`—‘ V `   Tins, i
 .; ;¤:\:jE   G _ A4" A  (     •·&,< > `   ·   1tl1\'(%l'S
1`t_.£‘§ _»&v_...   7, A.- -.e.‘·,_._; .: An.}   __._?_‘»_·:» ; ·_ 7; - Y m!"|_::`$¤   Q.])]`»lO\¤
ll‘l.'l$"§ i    I   45 M'       r` A`.   ` . '°“°° ulnmvn  lib  ll'lSt\·{Ld
)sJ.]y.‘·‘{é• JE ·'       _   - Y V- _ _» . v ;Yi_ in othc
    iw,. ..,.. —. .... ;_;.»r* .. Je. *  w Vp   J   ¥ ` » " ·   unrcse
·?l* ·¤?§ lt ‘ ‘,·-   .. ··-. as · ._ 4   i, V- I
  Q]  ` ‘·     *7*é -i-*~-;._LT;,h .‘   v_ V E; 
:%·r.};i<*;" `     .,_._.   ;_: i 
fl-<:·_.‘§%r   · ·‘l~*;‘·I _.é1.{*.;... a·.j.}.‘_T_ E _ fif  
ji. Fiji?  ' -7 · éi
  ·t?  . . .
,‘_,V ‘ »_%?gér Thrs Short Wave Regeneratrve Set was developed for the reception of
  sr wave len ths from laO to art) meters. We know that 1t could not be better
~¤`• " P g . . V . . .
  .y_j  or more efhciently made. \\e have 110 hesitaney in saying that we do not
    believe it is possible to make one of these sets that will do more efficient
  ,   work, and we know tnere is none on the market that is any better made.
{   In our initial tests conducted in our laboratory and at the bcott High School
rg;.  _{< here the results were amazing. Amateur stations from points as far distant
  as 'lexas, Louisiana, \\1scons1n and other drstant points came 11] with re-
f,;;;§¤i;Q ·;;2.»*1 markable clearness and loudness. \`rltll a loading corl ocean liners and war-
  shi s in all arts of the Atlantic Ocean were distinctly heard. This set with
  ~» v.‘  . . . . . .. .
F€l_}r§i  gz the other necessary receiving apparatus will increase the audibihty of signals
  immeasurably and bring in tnousands of stations that have heretofore been
  t  closed to *0u. It may be used both for dam vcd and undam ned waves.
at tbl r "‘ s > r , / I, 1 - I
  rl hc case mcasurcs 6¥4xll3 rx6% . lt has a beautiful hand rubbcrl ma-
E;,g.;2;f;;i;§  hogany harsh. All connections are brought out directly to thc polished
;£‘_;·‘   I'Ol'llllC?l panel. Connections arc soldcrcd to copper lnpjs nn¢.lC\` n1ilCl11nC
'.r·@l,?. ~." screws. All metal warts are limvilv >latcd and uolislicd.
da Mlql-.. , l . . . · I . .
  Esp  lhe antenna circuit is mductively coupled to the closed circuit and the
    coupling is variable by adjusting the large knurlcrgl knob. This is very 1m-
.{K.,`.{-g  portant, for without an adjustable coupling, it is impossible to do the best
  xi long distance work. The adjustable coupling allows you to cut out static
 W};-*=.  and to still further increase the sclcctivitr of the set. In fact some of the   “‘"
rst,.-a  . . > . <
)l*1·¥_.g=`.·,,"  best work done with this ser has been done with an extremely loose cou ·
i `igl TL! 1, ?_A1.`   _ Y I · · ` .4 _
_*'9·.§;_§{;.‘.V  ling. Dont burden your statxvn with a set lrawng hxed COl1]")llIl§’,’. _  
  The primary circuit is adjustan! r by single turns by adjusting the two pri-  
  mary knobs. The grid lIl(l1_l"LlTZll`lCC is adjustable by the 12 point switch and Q
  a special variable condenser is included in the circuit to give close tuning.
    When connected to an Andre-’l`ron or other type of vacuum bulb dc-
yf l tector and telephones this regenerative set makes a complete receiving
  set. lt responds most; efficiently to wave lengths from l50 to 570 weters. To  
i}gE§V.~fF;ri,  make this particular set with a greater range would reduce its marvelous ¤.~
@@:.3 jg $*. 1 cfliciency and short wave lengths. E
  it  Blueprint of connections is furnished showing the most approved Arm-
 fji. strong circuits; Extra binding posts are provided for an additional Arm-
  ¤\l"\'·,; strong circuit if desired
,_r-LQ 4 Y
»'`= Féligai  .=¤‘ ~
it  s x  
l..i§’g=‘  "*€{
       

 'l‘III·1 \\‘Ilil,I.\1l It. l)l‘l'I( (`0)II’\\\‘, ’|‘uI.l·lI)H. olllu. T
’
N0, 1812. Slinri, \\';1\‘4;1{i·_:’i·11<·1·:11i\‘·~ lli···1·i\‘<·1‘ I`i11· ICH) In STU lll(‘l(‘l'S, |lI'l'·
lniiil in :li1_\' |1:l1‘I ¤»l` tl1<· l'11ii<·1l Sisilrs ·11· l`:111z|11l‘d transmit-
[· i.u;: si:1li1»11s i11 ihis <'¤·lillil'}' :111·i l-1¤i1·t1l>i·;111 (;OLlIli.I’lCS,
t ’l‘h·.: staiiiiins i11 this 1·l1u11try using li»n;‘ uiidttinpcd
xi 'l\'i1S l1:i~.w· l»·»·-11 ll.·· 1111Iy lll¤*iIllS ·»t` i·c11111111111iu;1tio11
t : ilni\\`¤(·Il {his <'¢·lllltl‘}' zimi iii-1·111:111;.‘ sinvie cithliz 0011-
_ 11····ti··11s l1:1x‘·· l·1··~11 wut. ’l`l1·· u<»\`·-1·11111··11tl1:1s mluipped
I  _ ull ·»l` its i111i»i·1·1:1111 iilll}llil'?lillS uml ull il€illi<·SiIll>S l1;1\‘t~ vquipnicnt _i`0r
t   l*‘<'•‘l\'l1lU` 1`l‘·~iu th<·s·· s··ls. i11 1`:1··t :1ll l'ilIlllllOl`(§lZl1 high
z-   .- }lil\\`¤·l' si-is uri; using this F}'$L··1ll. Thi; wuvc lengths
._   . ’ 1·l` lil(,‘#l‘ st;iiii»11s \`£il`)' l`1·i»111 3000 niwtcrs t0 15,000
    111<·t·—1·s,
1 V i._·13*   '|`his lllllt*l' is 111` ll1·· l1··si. 11t. lt is l!l Li.ilU|l in lG,lll|(| ]1li·L¢·l‘S.
'   `j· 2;. 'l`l11· \\ill¤ill\;L$ :1r·~ 11i` Sill; <‘··\’·-1`•~il \\'irc, Tl]L1(‘iliI`l€
..t   I ' \\’·ii|llii i·11 sul»st:111ti:1l u11sl11·i11l<:1l·l·· iulms. '1`hurc czui
· g *_» “ .. hl- my i·l·1111·:11·is··11 ill ih·~ 111lx;111i:1gi·s nf silk cmwwcci
5} _;’     i~11:11m~l \\i1··-, 'l‘l1·,· ]¤l‘llIlfll'f»' tulw is N i11. x I3 in, The
C     5¤*<'l*ll·· is T in. x I2 in. 'l‘h·· i111l11<·1;111<·0 of the
' -.     _, uimling is \‘zt1·1»¤l hy 5\\iL4'il. z1ll slilliers bring {elimi-
_       11:1t···l. 'l`h¤· ]¤|'lllllll')` is \&ll`l4·ii in si··11s <»l` two turns
0 ` ' I, {Y _ ··:11~l1 uml il1·: s···:··11·l:i1·y is ·#··:1t1··»llt-tL hy .;t 15—pt11nt
1,   ' S\`.'i[¤‘il, ;.;·ixi11g xwry <;l·»s·· lunin;1
" sv ° ’l`hi- :11·ii·-:1l lllUlllll,lllL1` nre t»l1vit1us
it ;111·l i11s1>·~¤·1i··11 ··!` ll1·· wut will <···11vi11<1·: :1ll {hut this
C is il1»· hh-:1l 1-~11sl1·m·lii·11. 'l‘h1· lllilllllllvlli eicuupius ill
-· -~·~ ·---- ..   .... ., i11`·l1·-s s1la1:11·1· sl·:1<··- i·11 ih.- i»]1r·1‘;1ti11y; t:1l>l<·, while thv
$  F ____3é__¤__ _ 1·l·l still; 1*··il11i1·i·s iliriwe l'1~¤-i.
V`   .· 'l`l1·~ s•·i·¤·11il:11·y is 1-1111111i·1·l1:1l:i11i···d und the touch
 '+§~·;a¤si; <~¤ i§  ` ¤1I`:L lill;L`¤‘l' 111·»\‘··s ii i1· zany l»··sili¤»11. \\·il4‘ll rztisced tu
·]. _     its ¤~;\i,1·l·111·~ l1··i;;·l1t i,l1·· <'*lll|>illlLL` il·‘i\\'•‘k‘!l thc primztry
I - €@.¥;;»j V fi;,  _. Anil s1~1·i·111l:11*y is s i!ll'ill>¥. Jliil·\\`|li§` vwry s<·l0et1v•·
(     llllllllpl`. 'l`hu c<»1111l1·1·l1;il:1111·1- \\`\Jl;g`il[ inside the
Q.    '_ S(1\|£ll'!* 11ii·l··s··.
t;.1z§.i?1l QUENCHED SPARK TRANSMITTER
 ;}T?_,{=,; HQ
  dg? msssrs, U . ,. .i..   .,.,. ,»,»   ,4,, . , Tm “d"&"mg€"
  ga; [ —   I-, . . . - ·   __ __,'_,~*j =~· » ·**·—-,~;_;   .- ·-