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Welcome to Roger Russell's |
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Copyright 1996-2004 by Roger Russell
All rights reserved
No portion of this site may be reproduced in whole or in part
without written permission of the author.
Any additions, comments or
corrections are welcome.
What's On This Page?
Besides making clocks, Jefferson also made many different kinds of
transformers including toy (train) type, bell, radio replacement, oil burner
ignition, control, luminous tube sign, door bell, signal, auto and double
wound. The Toy Transformers could also be used for Christmas tree lights. In
addition to transformers, Jefferson also made outlet and switch boxes, fuses,
cutout bases and clips, and metal clad mercury switches.
It might seem strange that electrical technology was so far advanced for
the 1910's and 1920's. Knowledge about coil properties, metallurgy, insulating
materials, etc. was commonly known. The materials may not have been as
sophisticated as what we have today, but the principles were the same and the
products worked very well.
Nikola Tesla was influential in standardizing the frequency of power
distribution systems to 60 cycles in the USA. Tesla based this frequency on the
way we tell time. A frequency of 25 cycles had been common in some areas of the
United States and Canada in the late 1920's to the early 1930's. It was used
because power apparatus, such as synchronous converters and alternating-current
commutator motors, work better at this lower frequency. However, at 25 cycles
the flicker of lamps can be seen and is objectionable. The advantage of the
higher frequency is that transformers require less iron and copper making them
less expensive and lighter in weight.
Some of the older Jefferson transformers were for use with 25/40 cycle
currents. Others were rated at 50/133 cycles. Fortunately, a 25/40-cycle
transformer can be used safely with today's 60-cycle house current. About 1965,
the term for line frequency was changed from cycles to hertz (Hz).
LITTLE
JEFF--No. 535-101
50 watts capacity
Jefferson Little Jeff
Toy Transformer. This transformer delivers six secondary voltages ranging from
5-1/2 to 13 volts in 1-1/2 volt steps. It is recommended for all Bing, Ives and
Lionel "O" gauge outfits except No. 268 outfit.
A green emblem is painted under the name Little Jeff. The 7 position
circular slider is at the front of the transformer. The line cord is made of
two separate wires with black cloth on the outside. These are twisted together
and exit the transformer case through a porcelain grommet that says Jefferson
100 1. The other end has an old style plastic two-prong plug
The transformer case is fastened to a square dish shaped bottom plate at
four raised points near the corners. The note stamped in the top says "100
to 120V. 50 to 133 CY."
The transformer case size is 2-3/8"H, 3-1/2"W and 3-1/2"D. Size including terminals, plate and slider knob is 2-7/8"H, 4-3/8"W and 4-1/4"D. Chicago-Jefferson Fuse & Electric Co. Chicago U.S.A.
LITTLE
JEFF--No. 535-111
50 watts capacity
This is a second
version of the Little Jeff for other trains. It has the same wattage but the
voltage is from 5-1/2 to 10-1/2 volts in 1 volt steps. Recommended for all
American Flyer, Borgfieldt, and Dorfan "O" gauge outfits. The model
number is not marked on the transformer. The 7-position circular slider switch
is on the front. The note stamped in the top says "100 to 120V. 50 to 133
CY."
The line cord is made of two separate wires with black cloth on the
outside. These are twisted together and exit the transformer case through a
porcelain grommet that says Jefferson 100 1. The other end has an old style
plastic two-prong plug. The transformer case is fastened to a square dish
shaped bottom plate at four raised points near the corners. The transformer
case size is 2-1/2"H, 3-1/2"W and 3-1/2"D. Size including
terminals, plate and slider knob is 2-7/8"H, 4-3/8"W and
4-3/8"D. The numbers 5 27 are stamped on the bottom plate. This could be a
date of May 1927. Weight is 2.6 lbs.
MIDGET
Toy Transformer
50 watts capacity
Jefferson Electric
Mfg Co., Chicago, Ill. For use with 110V 60 Cycle. The line cord is made of two
separate wires with black cloth on the outside. These are twisted together and
exit the transformer case through a porcelain grommet that says Jefferson. The
other end has an old style plastic two-prong plug. The transformer case is
fastened to a square dish shaped bottom plate at four raised points near the
corners. Terminals 1 and 2 are at the left side. Terminals 3 and R are at the
right side. The nameplate is black and silver.
The transformer case size is 2-3/4"H, 3-1/2"W and 3-1/2"D.
Size including terminals, plate and slider knob is 3-1/16"H, 4-1/4"W
and 4-1/4"D. Weight is 3.2 lbs.
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Switch Voltages |
Fixed Voltages |
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3 and R---1-1/2, 3, 4-1/2, 6, 7-1/2, 9
Volts |
1 and 2---6 Volts |
MIDGET
Toy transformer
75 watts capacity
Delivers 18 secondary
voltages ranging from 5-1/2 to 22-1/2 volts in 1 volt steps, with permanent
voltages of 6 and 12 volts. Will operate Ives trains--all "O" and
Nos. 691, 692, 705, 710 and 711 standard gauge outfits, American Flyer--all
"O" gauge and Nos. 342, 347, 350, 351 and 352 standard gauge outfits.
Jefferson Midget Toy Transformer. The 7 position linear slide switch is
at the top front of the transformer and slides left and right. The detented
positions are indicated by the gold colored triangles. Stamped in the top is a
note 25 TO 40 CY. The left hand terminals are numbered 1 and 2. The right hand
terminals are 3 and R. Rating is 75 watts for use with alternating current
only. Made by Jefferson Electric Company, Chicago.
The line cord is made of two separate wires with black cloth on the
outside. These are twisted together and exit the transformer case through a
porcelain grommet that says Jefferson 100 1. The other end has an old style
plastic two-prong plug. The transformer case is fastened to a square dish
shaped bottom plate at four raised points near the corners. The transformer
case size is 3-1/4"H, 4-1/16"W and 4-1/16"D. Size including
terminals, plate and slider knob is 3-1/2"H, 4-5/8"W and
4-1/2"D. Weight is 5 lbs.
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Switch Voltages |
Fixed Voltages |
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1 and R---5-1/2 to 10-1/2 Volts |
1 and 2---6 Volts |
Jefferson
Transformer No. 535-171
Midget Toy Transformer (Improved)
75 Watts
This was called an
"improved type" and was designed to be used at the higher line
frequencies of 50/133 cycles. This meant the volume of iron in the core could
be decreased for the same performance. The size of the box was reduced to
3"H, 3 1/2"W and 4"D. On the label it says 100-120 volts 50-133
cycles. On the box it says for standard and "O" gauge American Flyer,
Ives "O" gauge and smaller sized standard gauge, and
Lionel"O" gauge and Nos. 347, 352,353 and 354 standard gauge.
The 7 position linear slide switch is at the top front of the transformer
and slides left and right. The detented positions are indicated by the gold
colored triangles. The line cord is made of two separate wires with black cloth
on the outside. These are twisted together and exit the transformer case
through a porcelain grommet that says Jefferson 100 1. The other end has an old
style plastic two-prong plug. The transformer case is fastened to a square dish
shaped bottom plate at four raised points near the corners.
Jefferson
Universal Transformer No. 535-121
Midget Toy Transformer
75 Watts
For all standard and "O" gauge American Flyer, Ives
"O" gauge and Nos. 691, 692, 701,and 711 standard gauge, and Lionel
"O" gauge and Nos. 342, 347, 350, 351 and 352 standard gauge.
Jefferson Electric Mfg. Co. 501-511 S. Green St., Chicago
This may be a later version
of the Midget Toy transformer. It has the same voltages and wattage. The model
number is not marked on the transformer but is on the box. The 7-position
circular slide switch is on the front instead of the top. The note stamped in
the top says "100 to 120V. 50 to 133 CY."
The line cord is made of two separate wires with black cloth on the
outside. These are twisted together and exit the transformer case through a
porcelain grommet that says Jefferson 100 1. The other end has an old style
plastic two-prong plug supplied with a screw base adapter for a lamp socket.
The transformer case is fastened to a square dish shaped bottom plate at four
raised points near the corners. The transformer case size is 2-3/4"H,
3-5/8"W and 4-1/16"D. Size including terminals, plate and slider knob
is 3"H, 4-1/2"W and 4-3/4"D. Weight is 3.5 lbs.
TYPE
No. 2--No. 535-131
100 watts capacity
This model delivers
25 secondary voltages from 5-1/2 to 23 volts in 3/4 volt steps. Permanent
voltages of 4-1/2, 9, and 13-1/2 volts. Will operate Ives trains--all standard
and "O" gauge outfits, Lionel trains--all standard and "O"
gauge outfits, Christmas tree lighting outfits, up to sixteen 14-volt lamps.
Jefferson No. 2 Toy Transformer 100 Watts. For 100 to 120V 50 to 133 CY.
For Use On Alternating Current Only. The 7 position circular slider is mounted
on the front of the transformer. The left hand terminals are numbered 1 and 2.
The right hand terminals are 3, 4 and R. Made by Jefferson Electric Mfg. Co.
Chicago, Illinois
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Switch Voltages |
Fixed Voltages |
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1 and R---5-1/2 to 9 Volts |
1 and 2---4-1/2 Volts |
TYPE
No. 3--No. 535-141
150 watts capacity
Delivers 25 secondary
voltages from 1.2 to 30 volts in 1.2-volt steps. Permanent voltages of 6, 12,
18 and 24 volts. Will operate all types of electrical trains up to the largest
and most expensive, and should be recommended when extra cars and accessories
are used with standard outfits. Will also operate Christmas tree outfits up to
thirty two 14 volt lamps.
For 100 to 120V 50 to 133 CY. For Use On Alternating Current Only. The 7
position circular slider switch is mounted on the front of the transformer. The
left hand terminals are numbered 1, 2 and 3. The right hand terminals are 4, 5
and R. Size is 4"H, 5"W and 5-1/4"D.
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Switch Voltages |
Fixed Voltages |
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1 and R---1.2 to 6 Volts |
1 and 2---6 Volts |
Jefferson
Toy Transformer--No. 535-191
150 watts capacity
Primary 100/120 Volts--50/60 cycles. Secondary voltage has a continuously
variable control as well as fixed voltages. Jefferson Electric Company,
Bellwood, Illinois.
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Switch Voltages |
Fixed Voltages |
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1 and R---1 to 6 Volts |
1 and 2---6 Volts |
SIGNALING
TRANSFORMER--No. 231-101
This is undoubtedly a
later design and with the new Jefferson address. Capacity 50 Volt-Amps, Primary
volts 115, cycles 50/60, Maximum current capacity of secondary winding 2 amps. Serial
number stamped in the plate is 218126.
The top cover can be
removed to select the connections for the desired voltages. The two primary
connections are in the top section. The four secondary connections are in the bottom
section. A 35 ohm 25 watt control is mounted in the top cover (not shown). The
control shaft is 2" long and has a screwdriver slot at the end. A 3-prong
Amphenol socket is mounted on the right bottom side. I found two rectifier
diodes mounted on a circuit board inside plus a 500 mfd 50V-filter capacitor
(at the bottom). The control appears to have been added by someone at a later
date. I don't know if the rectifiers, capacitor and socket are standard or were
also added by someone later. The diodes and capacitor provide a filtered DC
output for the secondary transformer voltages. The control provides a
continuously variable voltage for the transformer taps selected.
The transformer has brackets at each end at the bottom. There are holes
and slots where it can be permanently mounted to a board. Height (including
brackets) is 3-7/8", width is 4-3/16 and depth is (including brackets)
8-5/8".
Jefferson Electric Luminous Tube
Transformer
Catalog No. 721-101-100 Outdoor Non-Weatherproof type. Pri. 120V 60HZ.
160VA. Sec. 5000V 30 mA. Sec. Start Grounded. A9001 may indicate a date of
manufacture of 1990. MagnaTek Jefferson Electric. The transformer case size is
3-5/8"H, 3-1/8"W and 4-5/8"D. Depth including terminals is
7-3/8". Weight is 6.7 lbs.
Catalog No. 721-111
Outdoor Non-Weatherproof type. Pri. 120V 60HZ. 450 VA. Sec. 15,000V 30 mA. Sec.
Midpoint Grounded. J7405 may indicate a date of manufacture of 1974. Jefferson
Electric, Division of Litton Industries, Bellwood, Ill.
Jefferson Electric Luminous Tube Transformer
Catalog No. 721-131 Outdoor Non-Weatherproof type. Pri. 120V 60HZ. 180
VA. Sec. 6000V 30 mA. Sec. Midpoint Grounded. A/C power cord has been added.
Measures about 8" x 3" x 4". This transformer was removed from a
neon sign assembly.
Jefferson Electric Luminous Tube Transformer
Catalog No. 725-151-700 Outdoor Non-Weatherproof type. Pri. 120V 60 Hz
225 VA. Sec. 7500V 30 mA. Sec. Midpoint Grounded. The A8709 probably indicates
a date of manufacture of 1987. Size 3" X 3-1/2" X 9". Weight 12
lbs.
Magnetek Jefferson Luminous Tube Transformer
Catalog No. 725-141-041 Outdoor Non-Weatherproof type. Pri. 120V 60Hz 270
VA. Sec. 9000V 30 mA Sec. Midpoint Grounded. The m 95 05 probably indicates a
date of manufacture of 1995.
This early
bell-ringing transformer is a single block of white glazed porcelain 1/4"
thick that's open in the back. The transformer is inside and is covered with a
tar potting material. A metal mounting bracket is attached through holes in the
porcelain sides. The words "Pat'd Dec 1, 1925 U.S.A. 3-31" are
stamped in the bracket. This is probably the date of March 1931. 7"
insulated primary wires are brought out through two other holes. Two secondary
binding post terminals are at the other end. Cast into the porcelain in raised
letters are "Line 110 volts 50/133 cycles" at the primary end and
"Bell 10 volts" at the other end. In the middle is "Jefferson
Bell Ringing Transformer, Chicago. Size of the porcelain container is 3-1/8 X
3-1/8" X 1-7/8"
Catalog
number 230-101. Made by Jefferson Electric Company, Bellwood, Illinois. Here is
a later bell-ringing transformer. It has two 5-1/2" primary wires on one
side and two secondary screw terminals on the other side.
Size is 2-1/2" high, 2-1/4" wide and 2" deep. Weight is
3/4 lbs. It is painted black. Capacity is 5 watts. It has a UL approval seal.
Catalog No. 637-271.
Made by Jefferson Electric. This industrial control transformer is rated at 50/60
Hz. Primary 120V, Secondary 24V at 150 VA (6-1/4 amps). The number on the label
is W8205, which may be the date of May 1982. Case color is blue-gray and the
core is black. Primary wires are 7" long made by Belden. The transformer
is UL approved. Size 4-1/8"H, 3-1/4"W and 4-3/8"D (including
threaded wire exit). Weight is 6 lbs.
Catalog No. 216-1421. Made by Jefferson Electric, Division of Litton
Industries, Bellwood, IL. This dry type transformer is in a gray steel case.
The transformer is potted in a sand/epoxy mixture. It is rated at 50/60 Hz
single phase. High volt is 240/480V and low volt is 24/48V at 250kVA (24V at
10.4 amps and 48V at 5.2 amps). (The number on the label is J8201, which may be
the date of January 1982. Size is approximately 3-3/4"H, 4"W and
9"D.
Here's a box of five
Jefferson Union Fuses 3AG type at 20 amps.
The writing on the back says:
" Fuses are necessary for the protection of an electrical system,
including that of your car. A fuse 'blows' when the electrical system is
overloaded to the point of danger to apparatus and wiring. Union fuses are
constructed accurately to burn out at this danger point. When a fuse 'blows'
and the replacement fuse also burns out immediately, look for trouble in the
electrical system. Do not attempt to use pieces of wire or larger fuses"
The box size
is 3/8" thick, 1-3/8" wide and 1-13/16" long. Weight with the
fuses is 0.6 ounces. The address is Jefferson Electric Company, Bellwood, ILL.
Inside the box it says:
"Other Jefferson products
TRANSFORMERS:
Radio Replacement
Luminous tube sign
Oil Burner Ignition Control
Door Bell and Signal Toy
Auto and Double Wound
--------------------
Outlet and Switch Boxes
Cut-out Bases and Clips
Metal Clad Mercury Switches"
Many other Jefferson fuse boxes
have been found with several different art layouts and addresses.
This box contains five
3AG 3.0 amp fuses. The name on the box is Chicago-Jefferson Fuse &
Transformer Company, Chicago, Ill. This is an earlier address than the one
above
Jefferson Renewal Links
Catalog number
381-030. Jefferson Union Renewal Links. These fusible links can be used to
replace a burned out link in a fuse holder. They come 20 to a box. They are
rated at 30 amps and 250 Volts. The box size is 1/2" high, 2-5/8"
wide and 3/4" deep. The back of the box has an underwriter's inspection
label.
Each link measures 0.011" thick, 2-1/4" wide and 1/4"
deep. The narrow portion at either end is .048". The center narrow part is
0.10". Imprinted in the metal is "UNION 250 V and 30 is at either
end. The tabs must be bent at right angles about 1/4" from each end to
stay in place. Patent dates on a competitor's link found in the box are 8-15-16
and 2-27-17. This is possibly 1916 and 1917.
Jefferson Gem Plug Fuses
Jefferson also made
standard home type fuses. This box contains five 15 amp fuses. The part number
is 388-115. The box is 1-1/4" high, 2-3/4" wide and 1-1/4" deep.
Jefferson Electric Company, Bellwood, Illinois. The instructions on the box
say:
"Be Sure to Use Fuse of the
Proper Capacity"
"For home lighting branch circuits use Jefferson 6, 10, 12, and 15
ampere fuses, depending upon the total ratings of lamps and appliances on each
circuit. Use sizes over 15 amperes for main line circuits only. All Jefferson
plug fuses are listed by and bear Underwriters Laboratories label for use on
110 to 125 volt circuits."
"How to Install"
"Open the main switch, go to the fuse panel and reflace all burned
out fuses with Jefferson clear window fuses which permit you to see at a glance
whether or not the fuse element is intact. Then close the main switch and the
circuit again be in service. If fuses continue to blow, call your electrical
dealer or lighting company. . and had the old mica window."
Here is a 25 and 30
amp fuse in the same style. They have a clear mica window. The top, threads and
base are made of brass. On the top it say Jefferson Electric and the current
rating. The current rating is also imprinted on the base. The main body is porcelain.
The top is 1-1/8" in diameter and the threads are 1" in diameter. The
height is 1-1/8". Weight is 25.5 grams or almost 1 ounce.
Industrial Fuses
Jefferson also made
very large fuses. This one pictured is 8-3/4" long and 2-1/16" in
diameter. It weighs 927 grams or just a little over 2 pounds. For comparison, a
common Jefferson fuse box and type 3AG fuse are shown.
The metal portion appears to be brass. The contacts are 1-5/8" X 1-7/8"
and 1/4" thick. They are probably silver-plated and are slightly
tarnished. The brass cups at each end are riveted in place. The insulated
barrel looks like woven fiberglass. The words 400 A 500 V J. E. CO are stamped
on the side of one of the cups.
Information on the cardboard box
that it came in says:
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Stock No P 17-F-17472-4000 |
S.C. Order No. N 151-219S-91311 |
These directions came with a Jefferson Toy
Transformer
Directions
for Operating
Jefferson
Toy Transformers
With
Special Instructions for
Trouble
Finding
Caution
Ninety percent of all transformer trouble is caused by permitting the
train to lie across the rails and cause a short circuit when it jumps or is
knocked off the track.
Naturally, if there is a short circuit, the load on the transformer is
much greater than it is designed to carry and it may burn out if permitted to
remain in that position.
Each transformer has its rated capacity, but will stand a 25% overload.
They should not be expected to take care of a heavier load.
If the transformer is operated on an overload or short-circuit, it will
heat up. We recommend placing your hand on the transformer after 15 or 20
minutes' use. If it becomes very warm, it is an indication of too heavy a load
or a short circuit and should be disconnected at once.
This transformer is intended for intermittent service and should be used
only for short periods at a time. Be sure to turn off the current when train
outfit is not in use.
Remember, burn-outs are only liable from short circuits, overloads, and
continuous service.
This transformer is purely a toy device and is not designed for
continuous or commercial service. It will operate from alternating current
only, of the voltage and frequency specified on the transformer. If you are not
certain of the current, call your electric light company before attaching
transformer to the house circuit. This precaution must be taken, or you may
ruin the transformer.
A 110-volt, 60-cycle transformer will operate successfully on voltages
ranging from 100 to 120 volts, and 50 to 133 cycles. A 25-cycle transformer
will operate on frequencies of from 25 to 40 cycles.
Make all connections from transformer to tracks or accessories before
attaching to the house circuit, and be sure to have current shut off when you
screw in the plug from the transformer. Two lead wires are furnished with each
transformer. Scrape the insulation off the ends of the wires, before attaching
to transformer and track.
While Jefferson Transformers will easily stand a 25% overload
without harm, we recommend shutting off the current immediately when you stop
the train, or when the train jumps the track.
Different sizes of trains require different secondary voltages. For
instance, you have a Midget transformer and desire 14-1/2 volts. Connections
are made from the track to posts marked R and 2 and advance the switch lever to
the fifth contact. If less voltage is desired move switch lever to left; for
more power, move to right. If 6 volts are wanted for lighting small lamps,
connect one wire, to post No. 1 and the other to No. 2, attaching the other
ends to the lamp binding posts.
Other voltages may be obtained by combining the various posts. The
nameplate on the cover shows how to obtain the various voltages. If your train
instructions do not specify the voltage to use, attach the wires to posts R and
1 first. If that does not give enough power to pull the train, attach the wires
to posts R and 2, etc., until the necessary voltage is available. Any of the
low voltages may be used singly or simultaneously. Also any number of leads of
the same voltage may be used at the same time, provided the section in use is
not overloaded.
Toys and other electrical apparatus that require a given battery voltage
to operate require 3 to 7 volts higher voltage alternating current to do the
same work. For instance, a toy train requiring 8 volts direct current will take
about 11 volts alternating to do the same work, and it may be run on a trifle
higher voltage without any harmful effects.
Special
Instructions
During past years, transformers have been returned which owners claimed
are defective. In a large majority of cases we found, after investigating, that
the transformer was all right and that the fault was with some other part of
the train system. We give you, therefore, a few hints as to what to look for in
case the train does not work when connections are made.
Directions for Operating Electric Trains
When the attachment plug of the Jefferson Transformer is connected to the
alternating current lighting circuit, the power is ready. Always start the
train with a minimum amount of current and add more voltage by moving the
regulating switch from left to right. Before placing locomotive on track see
that the current is turned off. If the locomotive has a reversing controller,
see that it is pushed forward or backward as far as possible.
If directions have been carefully followed, the locomotive should start
when the power is switched on. Yet it sometimes happens that the locomotive may
have been slightly injured by careless handling or from rough treatment in
shipping. Usually the trouble is so slight that by following our suggestions
you will be able to correct it.
To
Test Locomotive
Disconnect the two wires running from the track terminals leaving wires
attached to Transformer. Turn locomotive upside down and hold one wire on motor
frame; with the other wire touch shoe, which collects the current from the
third rail. If locomotive has a reversing controller, be sure it is set
backward or forward. If locomotive is 0. K., wheels will revolve. The voltage,
which will cause wheels to turn idly, is not sufficient to operate it when on
the track, so after you replace locomotive on track, give it more power than
you did while testing it. If it still refuses to move, it may be that the track
is short-circuited or open circuited. Short-circuit means that the current of
electricity is taking a shorter way back to the Transformer through some
metallic connection between the middle rail and outside rail or between
connecting wires. Open circuited means that all sections of the track are not
properly connected.
Finding
Short Circuit on Track
Be sure that all sections on track fit snugly together and that nothing
lies across or stands on the track, not even the locomotive. Make sure that no
metal is in contact with outside and center rail. Then with two wires running
from Transformer hold one wire to outside rail and brush the end of the other
wire across the center rail. If the track is perfectly insulated, no sparks
will occur when you brush the wire across it; but if it is short-circuited, a
spark will occur where the wire touches.
Next locate the short-circuited section. Disconnect one section at a time
and apply the wires to the remaining sections as above. As soon as the defective
section is removed, the sparking will stop. Or disconnect all sections and test
each separately. The one that sparks is defective.
Clean the track with a cloth dampened in kerosene and then wipe perfectly
dry. This is important
How
to Get Power from Jefferson Transformers
to Toy Electric Lamp Post, Station and
Semaphores
Always use set voltages only for lighting lamp posts, semaphores, etc.,
running separate wiring for this purpose. The regulator should be used only for
operating the train at various speeds.
When electric railway accessories are to be used, we suggest that you
tack the track down on a board or table. This should be a little larger than
the track to be used. Fasten down the accessories with small screws. When
connecting accessories to transformer make sure the lamp voltage corresponds
with the voltage being taken from Transformer.
Do not permit the lights to burn continuously. The transformer is not
intended for continuous service.
Operating
Christmas Tree Lights with
Transformers
Christmas tree lights wired in multiple can be operated through Jefferson
Transformers. The principal advantage of multiple wired lights is the fact that
should one light burn out the others are not affected. With the series system
one burnt out lamp puts out all the others on the same circuit, making it
difficult to locate the defective one.
The No. 2 Transformer will operate as many as sixteen14-volt lamps. Eight
of the lights should be connected between binding posts "1" and
"4" and eight between "2" and "R."
The No. 3 type will operate up to thirty-two 14-volt lamps by connecting
half of the number of lamps between binding posts "1" and
"3," and half between "2" and "R."
Extra
Wires Enclosed with
Transformers
Two leads of wire are enclosed with each Jefferson transformer to be used
in connecting the toys to the binding posts.
Our
Guarantee
Jefferson Toy Transformers are guaranteed to be mechanically perfect when
leaving our factory.
Any transformer, which proves defective through poor material or
workmanship, will be repaired or replaced free of charge.
If the transformer is abused either by overloading or a short circuit,
repairs or replacement will be made at factory cost. Transportation charges
must be prepaid on all returns.
Guarantee void if transformer is opened, tampered with or not used
according to instructions.
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About This Site |
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More text and pictures about Jefferson will be added as my research continues. Any comments, corrections, or additions are welcome. |
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Created by Roger Russell |