DIFFERENT MAKES OF TRACTION ENGINES.
J. I. CASE TRACTION ENGINES.
These engines are among the simplest and at the same time most
substantial and durable traction engines on the market. They are built
of the best materials throughout, and are one of the easiest engines
for a novice to run.
They are of the side crank type, with spring mounting. The engine is
supported by a bracket bolted to the side of the boiler, and a pillow
block bearing at the firebox end bolted to the side plate of the boiler.
The valve is the improved Woolf, a single simple valve being used,
worked by a single eccentric. The eccentric strap has an extended arm
pivoted in a wooden block sliding in a guide. The direction of this
guide can be so changed by the reverse lever as to vary the cut-off and
easily reverse the engine when desired.
The engine is built either with a simple cylinder or with a tandem
compound cylinder.
In the operation of the differential gear, the power is first
transmitted to spur gear, containing cushion springs, from thence by
the springs to a center ring and four bevel pinions which bear equally
upon both bevel gears. The whole differential consequently will move
together as but one wheel when engine is moving straight forward or
backward; but when turning a corner the four pinions revolve in the
bevel gears just in proportion to the sharpness of the curve.
There is a friction clutch working on the inside of the flywheel by
means of two friction shoes that can be adjusted as they wear.
There is a feed water heater with three tubes in a watertight cylinder
into which the exhaust steam is admitted. The three tubes have smaller
pipes inside so that the feed water in passing through forms a thin
cylindrical ring.
[Illustration: J. I. CASE TRACTION ENGINE.]
The traction wheels are driven from the rims. The front wheels have a
square band on the center of the rim, to prevent slipping sidewise. The
smokestack is cast iron in one piece.
The firebox will burn wood, coal or straw, a fire brick arch being used
for straw, making this fuel give a uniform heat.
The boiler is of the simple locomotive type, with water leg around
the firebox and numerous fire flues connecting the firebox with the
smokestack in front. There is safety plug in crown sheet and the usual
fittings. The water tank is under the platform. The steering wheel and
band wheel are on right side of engine. An independent Marsh pump and
injector are used. The Marsh pump is arranged to heat the feed water
when exhaust heater cannot be used. The governor is the Waters, the
safety valve the Kunkle.
THE FRICK CO.’S TRACTION ENGINE.
The most noticeable feature of this engine is that it has a frame
mounted on the traction wheels entirely independent of the boiler, thus
relieving the boiler of all strain. This is an undeniable advantage,
since usually the strain on the boiler is great enough without forcing
the boiler to carry the engine and gears.
[Illustration: THE FRICK CO.’S TRACTION ENGINE.]
The gearing to the traction wheels is simple and direct, and a patent
elastic spring or cushion connection is used which avoids sudden strain
and possible breakage of gears. Steel traction wheels and riveted
spokes. Differential gear in main axle, with locking device when both
traction wheels are required to pull out of a hole. The reverse gear
is single eccentric, the eccentric turning on the shaft. It is well
adapted to using steam expansively. The crown sheet is so arranged as
not to be left bare of water in going up or down hills. Working parts
are covered dust proof. Engine has self-oiling features and sight
feed lubricator. Friction clutch in flywheel. Safety brake on main
axle. Engineer’s platform mounted on springs and every part of engine
requiring attention can be reached conveniently from platform.
Crank is center type. Cross-head pump is used. Usual fittings.
[Illustration: GAAR, SCOTT & CO.’S TRACTION ENGINE.]
These engines are built with boiler of locomotive type for burning wood
and coal, and of return flue type for burning straw. They are also
built of three general types, “Corliss-pattern” frame, “Standard” and
“Compound.”
The engine is side crank, mounted on brackets attached to the sides
of the boiler. The bedplate, cylinder and guides are bored at one
operation and cannot get out of alignment. Cylinder has wide ports
and free exhaust, and piston has self-setting rings. The genuine link
reverse gear is used, as on locomotives, and it undoubtedly has many
advantages over any other, including an easily adjustable variable
cut-off by correct setting of reverse lever.
The differential gear is heavy and effective. A patent steering
attachment, with spiral roll, holds chains taut and gives positive
motion. Friction clutch is mounted on engine shaft and connects with
the hub of the pinion on this shaft. Rigid pinion is also provided.
Cross-head pump and injector are used, and Pickering governor with
improved spring speeder, permitting quick and easy change of speed;
also Sawyer’s lever for testing safety. Steam passes direct from dome
to cylinder, without loss from cooling or condensing. The steel water
tank can be filled by a jet pump operated by steam.
D. JUNE & CO.’S TRACTION ENGINE.
This is one of the very few traction engines built with upright boiler,
but it has been on the market many years and has been widely used with
great success as a general road locomotive.
The engine is mounted on the water tank. The weight of the boiler
comes on the hind wheels, and makes this type of engine superior for
pulling. It is claimed that it has no equal on the market as a puller.
The upright type of boiler has the advantage that the crown sheet
is never exposed and it is claimed flues will last longer than in
horizontal type. It works equally well whether it stands level or not,
an advantage that no other type has.
This type gets up steam more quickly than any other--it is said,
from cold water, in twenty minutes. The steam is superheated in a
way to economize fuel and water. By being mounted on the tank, the
engine does not get hot as it would if mounted on the boiler, and the
corresponding straining of parts is avoided. A patent water spark
arrester is used which is an absolute protection.
[Illustration: D. JUNE & CO.’S TRACTION ENGINE.]
The engine is geared to the traction by a chain, which can easily be
repaired as the links wear. The friction clutch works inside flywheel.
Engine has a new reversible eccentric, and differential gear, with
usual fittings.
NICHOLS & SHEPARD TRACTION ENGINE.
The builders of this engine lay special stress upon the care with which
the boiler and similar parts are constructed. The important seams are
double riveted, and the flue sheet is half inch steel, drilled instead
of punched for the flues, and fitted with seamless steel flues, all of
the best steel.
[Illustration: NICHOLS & SHEPARD TRACTION ENGINE.]
The boiler is the direct flue locomotive type. The crown sheet slopes
backward to allow it to be covered with water in descending hills.
Boiler has round-bottom firebox. Axle passes around below the boiler,
and springs are provided.
The engine is mounted on a long heater, which is attached to the side
of the boiler. The locomotive link reverse is used, with a plain slide
valve.
Cross-head pump and injector are used, and improved pop safety valve.
Cylinder is jacketed, and cross-head guides are rigid with cylinder, so
that perfect alignment is always secured.
Engines are built to burn coal or wood. A straw burner is provided with
firebrick arch. Compound engines are also built.
THE HUBER TRACTION ENGINE.
The Huber boiler is of the return flue type, and the gates are in the
large central tube. This does away with the low-hanging firebox, and
enables the engine to cross streams and straddle stumps as the low
firebox type cannot do. The cylindrical shape of the boiler also adds
considerably to its strength. The water tank is carried in front, and
swings around so as to open the smoke box, so that repairs may be made
on the fire tubes at this end easily in the open air. With water front
return flue boilers the workman has to crawl through entire length of
central flue. As there is no firebox, the boiler is mounted above the
axle, not by bolting a plate to the side of the firebox. The boiler
is made fast to the axle, which is mounted on wheels with spring
cushion gear, the springs being placed in the wheel itself, between
the two bearings of the wheel or the hub on trunnions, which form the
spindle for the hub. The wheel revolves on the trunnion instead of on
the axle, and there is no wear on the axle. The traction gear has a
spring connection so that in starting a load there is little danger of
breakage. The compensating gear is all spur. The intermediate gear has
a ten-inch bearing, with an eccentric in the center for adjusting the
gear above and below. There is a spring draw bar and elastic steering
device. An improved friction clutch works on inside of flywheel. Engine
has a special governor adapted to varying work over rough roads, etc.
[Illustration: THE HUBER TRACTION ENGINE.]
A single eccentric reverse gear is used, with arm and wood slide block
(Woolf); and there is a variable exhaust, by which a strong draft may
be quickly created by shutting off one of two exhaust nozzles. When
both exhausts are open, back pressure is almost entirely relieved.
The steam is carried in a pipe down through the middle of the central
flue, so that superheating is secured, which it is claimed makes a
saving of over 8 per cent in fuel and water. The stack is double walled
with air space between the walls.
A special straw-burning engine is constructed with a firebox extension
in front, and straw passes over the end of a grate in such a way as to
get perfect combustion. This make of engine is peculiarly adapted to
burning straw successfully.
A. W. STEVENS’ TRACTION ENGINE.
This engine has locomotive pattern boiler, with sloping crown sheet,
and especially high offset over firebox, doubling steam space that
will give dry steam at all times. A large size steam pipe passes from
dome in rear through boiler to engine in front, superheating steam and
avoiding condensation from exposure. Grate is a rocking one, easily
cleaned and requiring little attention, and firedoor is of a pattern
that remains air-tight and need seldom be opened.
The engine is mounted upon the boiler, arranged for rear gear traction
attachment. Engine frame, cylinder, guides, etc., are cast in one solid
piece.
[Illustration: A. W. STEVENS’ TRACTION ENGINE.]
It has a special patented single eccentric reverse, and Pickering
horizontal governor. There is a friction clutch, Marsh steam pump,
and injector. Other fittings are complete, and engine is well made
throughout.
AULTMAN-TAYLOR TRACTION ENGINE.
The Aultman-Taylor Traction Engine is an exceptionally well made
engine of the simplest type, and has been on the market over 25 years.
There are two general types, the wood and coal burners with locomotive
boilers, and return flue boiler style for burning straw. A compound
engine is also made with the Woolf single valve gear.
[Illustration: AULTMAN-TAYLOR TRACTION ENGINE.]
A special feature of this engine is that the rear axle comes behind
the firebox instead of between the firebox and the front wheels. This
distributes the weight of the engine more evenly. The makers do not
believe in springs for the rear axle, since they have a tendency to
wear the gear convex or round, and really accomplish much less than
they are supposed to.
Another special point is the bevel traction gear. The engine is mounted
on the boiler well toward the front, and the flywheel is near the stack
(in the locomotive type). By bevel gears and a long shaft the power is
conducted to the differential gear in connection with the rear wheels.
The makers claim that lost motion can be taken up in a bevel gear much
better than in a spur gear. Besides, the spur gear is noisy and not
nearly so durable. Much less friction is claimed for this type of gear.
The governor is the Pickering; cross-head pump is used, with U. S.
injector; heater, and other fittings complete. A band friction clutch
is used, said to be very durable. Diamond special spark arrester is
used except in straw burners. The platform and front bolster are
provided with springs. The makers especially recommend their compound
engine, claiming a gain of about 25 per cent. The use of automatic band
cutters and feeders, automatic weighers and baggers, and pneumatic
stackers with threshing machine outfits make additional demands on
an engine that is best met by the compound type. With large outfits,
making large demands, the compound engine gives the required power
without undue weight.
AVERY TRACTION ENGINE.
The Avery is an engine with a return flue boiler and full water front,
and also is arranged with a firebox besides. There is no doubt that it
effects the greatest economy of fuel possible, and is adaptable equally
for wood, coal, or straw. The boiler is so built that a man may readily
crawl through the large central flue and get at the front ends of the
return tubes to repair them.
[Illustration: AVERY TRACTION ENGINE.]
The side gear is used with a crank disc instead of arm. The reverse is
the Grime, a single eccentric with device for shifting for reverse. The
friction clutch has unusually long shoes, working inside the flywheel,
with ample clearance when lever is off. A specialty is made of extra
wide traction wheels for soft country. The traction gear is of the spur
variety. There is also a double speed device offered as an extra.
The water tank is carried in front, and lubricator, steering wheel (on
same side as band wheel for convenience in lining up with separator),
reverse lever, friction clutch, etc., are all right at the hand of the
engineer.
The traction gear is of the spur variety, adjusted to be evenly
distributed to both traction wheels through the compensating gear, and
to get the best possible pull in case of need.
For pulling qualities and economy of fuel, this engine is especially
recommended.
BUFFALO PITTS TRACTION ENGINE.
The Buffalo Pitts Engine is built either single cylinder or double
cylinder. The boiler is of the direct flue locomotive type, with full
water bottom firebox. The straw burners are provided with a firebrick
arch in the firebox. Boilers are fully jacketed.
[Illustration: BUFFALO PITTS TRACTION ENGINE.]
The single and double cylinder engines differ only in this one
particular, the double cylinder having the advantage of never being on
a dead center and starting with perfect smoothness and gently, seldom
throwing off belt. The frame has bored guides, in same piece with
cylinder, effecting perfect alignment.
The compensating gear is of the bevel type, half shrouded and so close
together that sand and grit are kept out. Three pinions are used, which
it is claimed prevent rocking caused by two or four pinions.
Cross-head has shoes unusually long and wide. The engine frame is of
the box pattern, and is also used as a heater, feed water for either
injector or steam pump passing through it. Valve is of the plain
locomotive slide type.
The friction clutch has hinged arms working into flywheel with but
slight beveling on flywheel inner surface, and being susceptible of
easy release. It is a specially patented device. The Woolf single
eccentric reverse gear is used. Engine is fully provided with all
modern fittings and appliances in addition to those mentioned. It was
the only traction engine exhibited at Pan-American Exposition which won
gold medal or highest award. It claims extra high grade of workmanship
and durability.
THE REEVES TRACTION ENGINES.
These engines are made in two styles, simple double cylinder and cross
compound. The double cylinder and cross compound style have been
very successfully adapted to traction engine purposes with certain
advantages that no other style of traction engine has. With two
cylinders and two pistons placed side by side, with crank pins at right
angles on the shaft, there can be no dead centers, at which an engine
will be completely stuck. Then sudden starting is liable to throw off
the main belt. With a double cylinder engine the starting is always
gradual and easy, and never fails.
The same is equally true of the cross compound, which has the advantage
of using the steam expansively in the low pressure cylinder. In case of
need the live steam may be introduced into the low pressure cylinder,
enormously increasing the pulling power of the engine for an emergency,
though the capacity of the boiler does not permit long use of both
cylinders in this way.
[Illustration: THE REEVES TRACTION ENGINE.]
The engine is placed on top of the firebox portion of the boiler, and
the weight is nicely balanced so that it comes on both sides alike.
The gearing is attached to the axle and countershaft which extend
across the engine. The compensating gear is strong and well covered
from dirt. The gearing is the gear type, axle turning with the drivers.
There is an independent pump; also injector, and all attachments. The
band wheel being on the steering wheel or right side of the engine,
makes it easy to line up to a threshing machine. Engine frame is of the
Corliss pattern; boiler of locomotive type, and extra strongly built.
THE RUMELY TRACTION ENGINE.
The most striking peculiarity is that the engine is mounted on the
boiler differently from most side crank traction engines, the cylinder
being forward and the shaft at the rear. This brings the gearing nearer
the traction wheels and reduces its weight and complication.
[Illustration: THE RUMELY TRACTION ENGINE.]
The boiler is of the round bottom firebox type, with dome in front and
an ash pan in lower part of firebox, and is unusually well built and
firmly riveted.
The traction wheels are usually high, and the flywheel is between one
wheel and the boiler.
The engine frame is of the girder pattern, with overhanging cylinder
attached to one end.
The boiler is of the direct flue locomotive type, fitted for straw,
wood, or coal. Beam axle of the engine is behind the firebox, and is
a single solid steel shaft. Front axle is elliptical, and so stronger
than any other type.
A double cylinder engine is now being built as well as the single
cylinder. The governor regulates the double cylinder engine more
closely than single cylinder types, and in the Rumely is very close
to the cut-off where a special simple reverse is used with the double
cylinder engine.
Engine is supplied with cross-head pump and injector, Arnold shifting
eccentric reverse gear, friction clutch, and large cylindrical water
tank on the side. It also has the usual engine and boiler fittings.
PORT HURON TRACTION ENGINE.
The Port Huron traction engine is of the direct flue locomotive type,
built either simple or compound, and of medium weight and excellent
proportions for general purpose use. The compound engine (tandem Woolf
cylinders) is especially recommended and pushed as more economical
than the simple cylinder engine. As live steam can be admitted to the
low pressure cylinder, so turning the compound into a simple cylinder
engine with two cylinders, enormous power can be obtained at a moment’s
notice to help out at a difficult point.
[Illustration: PORT HURON TRACTION ENGINE.]
Two injectors are furnished with this engine, and the use of the
injector is recommended, contrary to the general belief that a pump is
more economical. The company contends that the long exhaust pipe causes
more back pressure on the cylinder than would be represented by the
saving of heat in the heater. However, a cross-head pump and special
condensing heater will be furnished if desired.
On the simple engine a piston valve is used, the seat of the valve
completely surrounding it and the ports being circular openings, the
result, it is claimed, being a balanced valve.
The valve reverse gear is of the Woolf pattern, the engine frame of
the girder type, Waters governor, with special patent speed changer,
specially balanced crank disc, patent straw burner arrangement for
straw burning engines, special patent spark extinguisher, special
patent gear lock, and special patents on front axle, drive wheel and
loco cab.
The usual fittings are supplied.
MINNEAPOLIS TRACTION ENGINE.
The Minneapolis traction engine is built both simple and compound.
All sizes and styles have the return flue boiler, for wood, coal or
straw. Both axles extend entirely and straight under the boiler,
giving complete support without strain. The cylinder, steam chest and
guides form one piece, and are mounted above a heater, secured firmly
to the boiler; valve single simple D pattern. Special throttle of the
butterfly pattern, large crank pin turned by special device after it
is driven in, so insuring perfect adjustment; special patent exhaust
nozzle made adjustable and so as always to throw steam in center of
stack; friction clutch with three adjustable shoes. Boiler is supplied
with a superheater pipe. Woolf valve and reverse gear. Special heavy
brass boxes and stuffing-boxes. Sight feed lubricator and needle feed
oiler; Gardner spring governor. Complete with usual fittings. This is a
simply constructed but very well made engine.
[Illustration: MINNEAPOLIS TRACTION ENGINE.]
INDEX.
PAGE
A
Ash pit, 70
Attachments for traction engine, 52
Automatic cut-off engines, 137
B
Babbitt boxes, how to, 189
Blast devices, 30
Blow-off devices, 30
Boiler and engine, test questions, 52
Boiler, attachments, 20
Boiler, heating surface of, 132
Boiler, how to manage, 56
Boiler, locomotive, 13
Boiler, questions, and answers, 95
Boiler, return flue, 15
Boiler, starting a, 57
Boiler, vertical, 17
Boiler, water for, 62
Boilers, 11
Boilers, how to fill with water, 24
Boilers, terms connected with, 17
Boss, 43
Box, a hot, 87
Boxes, how to babbitt, 189
Bridges, how to cross safely, 93
Buying an engine, 7
C
Clearance, 35
Clearance and lead, 134
Compound and cross-compound engines, 141
Compound engines, 124
Condensation and expansion, 134
Condenser, 35
Condensing engines, 140
Connecting rod, 34
Corliss engines, 138
Crank, 34, 41, 42
Cross-head, 33
Cushion, 35
Cylinder cocks, 50
Cylinder cocks, how to use, 83
Cylinder head, 33
Cylinder lubricators, 45
D
Differential gear, 46
Double eccentric, how to set valve, 82
E
Eccentric, 36
Eccentric rod, 36
Eccentric, slipping of, 83
Economy in running farm engine, 116, 130
Engine and boiler, test questions, 52
Engine, compound, 124
Engines, different types of, 137
Engine, how to manage, 77
Engine, simple, 32
Exhaust chamber, 35
Exhaust, the, 135
Exhaust nozzle, 35
Expansion and condensation, 134
Expansive power of steam, how to use, 122
F
Farm, engine, economy in running, 116, 130
Fire, starting, 70
Firing, economical, 67
Firing with coal, 68
Firing with straw, 69
Firing with wood, 69
Fly-wheel, 44
Friction, 126
Friction clutch, 47, 88
Fuel and grate surface, 130
Fusible plug, 48, 72
G
Gas and gasoline engines, 143
Gas engines compared with steam, 144
Gasoline engines, description of, 146
Gasoline engines, how to operate, 150
Gasoline engines, what to do when they don’t work, 153
Gauge, water, 20
Gauge, steam, 22
Governors, 40
Grain, weight per bushel, 192
Grate surface, 130
H
Heater, 67
Heating surface of a boiler, 132
High speed engines, 139
Hills, how to pass with engine, 94
Hole, how to get out of, 92
Hot box, a, 87
How energy is lost, 119
How heat is distributed, 120
I
Indicator, steam, 50
Injectors, 28-66
J
Journals, 41, 44
K
Key, gib, and strap, 42
Knock, what makes an engine, 79
L
Lap of a valve, 35
Lead, 35, 80
Lead and clearance, 134
Leaks, 136
Leaky flues, 73
License, questions asked applicants for, 173
Link gear, 37
Lubrication, 85
Lubricators, 44
M
Meyer valve gear, 40
N
Non-condensing engines, 140
P
Pillow blocks, 44
Piston, 33
Ports, 34
Practical points of economy, 130
Pulleys, how to key, 189
Pumps, boiler, 25, 63
Q
Questions and answers, 95, 173, 104
Questions and answers, the boiler, 95
Questions and answers, the engine, 104
Questions, test, on engine and boiler, 52
R
Reversing gear, 37
Road, how to handle traction engine on the, 91
S
Safety valves, 23
Sand patches, how to get over with engine, 93
Setting a valve, 35, 81
Shaft, 41
Smoke, 71
Spark arresters, 31
Sparks, 72
Stationary engines, 137
Steam-chest, 34
Steam cylinder, 33
Steam, how to use expansive power of, 122
Steam, properties of, 121
Steam valve, 34
Stuffing box, 35, 50
T
Threshing machines, how to run, 158
Attachments, 167
Balancing a cylinder, 170
Belting, 167
Concaves, 162
Conveyor extension, 164
Covering pulleys, 171
Cylinder, 161
Fan, 163
How to feed, 169
Self-feeder, 165
Separator, how to set, 160
Separator, care of, 171
Sieves, 164
Straw rack, 163
Tailings elevator, 165
Waste, 169
Wind stacker, 166
Theory of steam power, 116
Throttling engines, 137
Throttle, 34
Throw of an eccentric, 36
Traction engines, different makes, 193
Traction, engine, how, to handle on the road, 91
Traction, engine, how, to manage, 77
V
Valve gear, 36
Valve, how to set simple, 81
Valve seat, 34
Valve, setting, 35
Valve stem, 35
Valve, steam, 34
W
Whistle signals, code of, 191
Woolf reversing gear, 39
Y
Young engineers, points for, 95, 104, 110
“ANNOUNCEMENT”
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[Illustration]
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of Mr. Hodgson’s works, it is written in a simple, every-day style,
and does not bewilder the working-man with long mathematical formulas
or abstract theories. The illustrations, of which there are many,
are explanatory, so that any one who can read plain English will be
able to understand them easily and to follow the work in hand without
difficulty.
The book contains methods of =laying roofs=, =rafters=, =stairs=,
=floors=, =hoppers=, =bevels=, =joining mouldings=, =mitering=,
=coping=, =plain hand-railing=, =circular work=, =splayed work=, and
many other things the carpenter wants to know to help him in his
every day vocation. It is the =most complete= and =very latest= work
published, being =thorough=, =practical= and =reliable=. One which no
carpenter can afford to be without.
The work is printed from new, large type plates on a superior quality
of cream wove paper, durably bound in English cloth.
Price $1.00
FREDERICK J. DRAKE & CO.
211-213 E. Madison St., Chicago.
Scientific Horse, Mule _and_ Ox Shoeing
By J. G. Holmstrom,
Author of Modern Blacksmithing
[Illustration]
=A standard treatise=, adapted to the demand of =Veterinarians=,
=Farriers= and the =Amateur Horseshoer=. Illustrated. The book is
concisely written; no long articles over the experiments of others, but
gives the best methods known up to date.
Although there are principles laid down in the book that will stand
so long as the horse is a horse, the author does not lay any claim to
infalibility or perfection; he has simply laid a foundation upon which
the ironer of horses’ feet may build and develop a perfect structure.
Among some of the valuable contents are:--
Anatomy of the Foot.
The Shoe and How to Make it.
Right and Wrong Filling.
How to Nail the Shoe.
How to Fit and Recalk Old Shoes.
Interfering.
Preparing the Foot for Shoeing.
Shoeing a Trotter.
Mule Shoeing.
Ox Shoeing.
Diseases of the Horse.
Hot and Cold Fitting.
How to Shoe Vicious Horses.
Kneesprung.
Stringhalt.
Contraction.
Sand Cracks, etc., etc.
Many of the fine illustrations used are reproduced by permission from
books issued by the U. S. Department of Agriculture.
Large 12mo, Cloth, with Special Cover Design, =$1.00=
Sold by Booksellers generally, or sent postpaid upon receipt of price.
FREDERICK J. DRAKE & CO., Publisher.
211-213 East Madison St., CHICAGO
ALL TECHNICAL TERMS AVOIDED
Practical Telephone Hand Book and Guide to Telephonic Exchange
HOW TO CONSTRUCT AND MAINTAIN TELEPHONE LINES
By T. S. BALDWIN, M. A. Illustrated.
[Illustration]
Containing chapters on “The Use of the Telephone, Series and Bridging
phones, Line Construction, Materials to be used, Locating and
Correction of Faults in Instruments and Lines.”
This is the best book ever published on Farm Telephones and has
been the sensation of the past year in telephone circles. It is the
only book ever issued which treats the subject exhaustively and
comprehensively. It is of inestimable value to promoters of rural party
lines because it contains all of the arguments that are necessary to
show the advantages of rural party lines. It also tells how such lines
should be constructed and cared for.
The great growth of the telephone industry during the past few years,
and in response to the demand for a comprehensive book, giving a clear,
terse idea of the different principles governing the construction,
installation, care and management of the various telephones and their
appliances, the Practical Telephone Hand Book has been compiled. It is
written in a most clear and careful style and aims to give a complete
review of the subject of telephony.
No expense has been spared in gathering valuable information, and it
has been the aim of the author to make this treatise the most complete
elementary book ever written on this subject for all persons interested
in this great achievement of modern science.
The text is profusely illustrated by cuts of commercial apparatus and
carefully prepared diagrams of circuits. No diagram is given without
a full explanation. The apparatus and methods used in making all the
tests required in commercial telephone work, including the exchange,
are fully treated.
12 Mo. Cloth, fully illustrated, price =$1.25=
BOOKKEEPING SELF-TAUGHT
_By PHILLIP C. GOODWIN_
[Illustration]
Few, if any of the technical works, which purport to be
self-instructing have justified the claims made for them, and
invariably the student either becomes discouraged and abandons his
purpose and aim, or he is compelled to enlist the offices of a
professional teacher, which in the great majority of instances is
impracticable when considered in relation to the demands upon time and
the condition of life to which the great busy public is subjected.
Mr. Goodwin’s treatise on Bookkeeping is an entirely new departure from
all former methods of self-instruction and one which can be studied
systematically and alone by the student with quick and permanent
results, or taken up in leisure moments with an absolute certainty of
acquiring the science in a very short time and with little effort. The
book is both a marvel of skill and simplicity. Every feature and every
detail leading to the climax of scientific perfection are so thoroughly
complete in this logical procedure and the analysis so thorough
and deftly made that the self-teaching student is led by almost
imperceptible, but sure and certain steps to the basic principles of
the science, which the author in a most comprehensive and lucid style
lays bare to intelligence of, even the most mediocre order.
The work is the most masterly exposition of the scientific principles
of Bookkeeping and their practical application which has ever appeared
in the English language, and it should be in the hands of every school
boy or girl, every clerk, farmer, teacher and business or professional
man; for a knowledge of Bookkeeping, even though it may not be followed
as a profession, is a necessity felt by every person in business life
and a recognized prime factor of business success.
In addition to a very simple yet elaborate explanation in detail of the
systems of both single and double entry Bookkeeping, beginning with the
initial transactions and leading the student along to the culminating
exhibit of the balance sheet, the work contains a glossary of all the
commercial terms employed in the business world, together with accounts
in illustration, exercises for practice and one set of books completely
written up.
12mo Cloth. Price $1.00.
Sent postpaid to any address upon receipt of price.
Frederick J. Drake & Co., Publishers
211-213 EAST MADISON ST., CHICAGO
* * * * *
Transcriber’s Notes.
Italic text is denoted by _underscores_ and bold text by =equals
signs=. Variant spelling, punctuation, and inconsistent hyphenation
have been preserved as printed; simple typographical errors have been
corrected. The following list notes the changes made or shows the
changed text below the original text.
Page 21:
They open directly ut
They open directly out
Page 52:
(1 is left in place.)
[added closing parenthesis]
Page 52:
15 ft. lin. Suction Hose
15 ft. 1 in. Suction Hose
Page 55:
used for rest of engine?
used for rest of the engine?
Page 59:
imperfect team gauge
imperfect steam gauge
Page 59:
tightning up a box there
tightening up a box there
Page 96:
Blown off more is only a waste of heat
Blowing off more is only a waste of heat
Page 117:
long separated overs
long separated lovers
Page 130:
should have a great surface
should have a grate surface
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[added decimal point]
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Few, if any of of the technical works
Few, if any of the technical works