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HOME OF LYDIA MARIA CHILD, THE FAMOUS ABOLITIONIST. Mrs. Child was a most efficient colleague of William Lloyd Garrison in the Anti-Slavery movement. This building is still standing in Medford, Mass., five miles north of Boston, and is now occupied by the Medford Historical Society. It is a wooden structure located near Medford Square. Here Mrs. Child was born, February 11, 1802, the daughter of Comers Francis, a baker famed for his “Medford Crackers." She wrote several books, one of which, in particular, aroused much comment-"Appeal for that Class of Americans Called Africans," and was afterwards editor of the “National Anti-Slavery Standard.” Mrs. Child died in 1880.

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HOME OF LO ISA M. ALCOTT AT CONCORD, MASSACHUSETTS. Miss Alcott was a teacher in early life, and an army nurse in the Civil War. She is best remembered, however, as one of the most delightful story-writers America has produced. Among her works are “Little Women," “Little Men,” “Old-Fashioned Girl," " Aunt Jo's Scrap-Bag." etc.

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PART OF THE ENDICOTT GRANT, DANVERS, MASSACHUSETTS. The old pear tree is said to have been brought from England at time of first coming of Governor Endicott.

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THE ENDICOTT HOME AT DANVERS, MASSACHUSETTS. Summer home of Mrs. W. C. Endicott, widow of Judge Endicott, formerly Secretary of War, whose daughter is the wife of the Rt. Hon. Joseph Chamberlain, British ex-Secretary of State for the Colonies. Her grandfather, Joseph Peabody, one of Salem's merchant princes, purchased this place in 1812 as a retreat for his family in case of a British attack on Salem. In one of the barns on the estate, some of his cargoes were stored.

Autos for Rural Free Delivery

By Waldon Fawcett

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HE United States Post- series of trials with an automobile de-
office Department has signed and constructed especially for
from time to time during this class of postal service.
the past few years, been The new automobile for rural free de-
importuned to authorize livery was built at Waltham, Mass., and

the employment of auto- is in type a friction-drive buckboard mobiles in the Rural Free Delivery fitted with mackintosh buggy-top. In Service, but until recently did not look this interesting car the power is transwith favor on the proposition. Physical mitted through two friction discs. The aspects of the country and varying con- disc on the engine shaft has a metal face, ditions of roads, were cited as among

and the wheel which engages upon it is the obstacles; but the chief objection was covered with a special fibroid which has found in defective mechanism in the con- remarkable power' of adhesion. The struction of most of the motor-cars of- power is transmitted to the rear wheels fered for the use of the country postmen. through double chains. The degree of Lately, however, automobile manufact- contact between the two discs is reguurers have remedied the objectionable lated by roller-bearing idlers in the rear defects of construction; and not only has of the metal disc, which is operated by a the Postmaster-General issued an order foot-lever. This lever has a ratchet acpermitting the use of automobiles and tion, giving it twenty different degrees motor-cycles in rural mail service, but of contact, this contact being increased the Government has lately conducted a as desired on heavy grades.

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HANDLING MAIL IN THE NEW AUTOMOBILE FOR RURAL FREE DELIVERY.

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The engine is four horse-power; and a to change in accordance with three-blade fiber fan mounted on the mendations of officials of the Postoffice front of the cylinder assists in the air- Department. cooling properties. The maximum speed The mail vehicle has made most satof the car is 25 miles per hour and the isfactory showings in tests recently held normal speed on ordinary roads is 15 to on representative rural mail routes in 18 miles per hour. In hill-climbing Virginia and Maryland. These demonpower-an important qualification for ru- strations, which took the form of regular ral free delivery work—the car is claimed deliveries of mail according to schedule, to exceed any other motor-car manu- by carriers, will be supplemented by furfactured, regardless of horse-power or ther practical tests under winter condiweight. In a recent official test, a car of tions. The officials of the Postoffice Dethis design climbed a grade of 32 de- partment are particularly encouraged grees; and with two passengers climbed over the showing made by this automoone of 22 degrees on the reverse gear. bile by reason of the fact that machines

The R. F. D. auto weighs 600 pounds; of this type can be furnished to carriers and with the carrier and any quantity of at only $100 each, which is little if any mail that the rural postman is likely to more than the average carrier must exbe called upon to carry, the weight will pend for a team of horses and vehicle in not exceed 900 pounds. The forward which to cover his route. Moreover, the part of the body is fitted with a cabinet operating expense is proportionately low, divided into pigeonholes to be used as one car being capable of traveling 120 receptacles for mail matter ; but the ar- miles on four gallons of gasoline and less rangement of this mail space is subject than two pints of oil.

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T

(F you are tempted to reveal

A tale some one to you has told
About another, let it pass,

Before you speak, three gates of gold.
Three narrow gates—first, “Is it true?"

Then, “Is it needful?" In your mind
Give truthful answer. And the next

Is last and narrowest, “Is it kind ?"
And if, to reach your lips at last,

It passes through these gateways three,
Then you may tell the tale, nor fear

What the result of speech may be.

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A

S the price of coal steadily ad- through them, while the hot gases from
vances, the engineer strives to the furnaces pass among and between.
make steam machinery more eco-
nomical. Added to the cost of

There are two distinct types: in one, the the coal itself is the expense of handling

pipes are arranged in straight rows; while in

the other they are so placed that the pipes of and storing, an item of no little import

one section are opposite the spaces of the adance in a large city. Until recent years, jacent section, this staggered” arrangement efthe use of steam received far more at

fectively breaking up the flow of gases so that tention than its generation. Improved paths and give up a large portion of their heat.

they impinge on the pipes standing in their valve - gear, condensers, superheating, triple expansion, and jackets enable the The economizer is placed between the engineer to get the maximum power for a furnaces and the chimney, so that the given weight of steam ; but these devices gases may be made to pass through it behave now been so perfected that further fore entering the chimney. This is shown economy in this direction will be had only in the sketch on the blackboard. It is with great effort.

customary to arrange a by-pass to conIf, now, we turn to the generation of duct the gases directly to the chimney in steam, we find a more promising field. case the economizer is being cleaned or Large volumes of hot gases pour out of repaired. the chimneys of power houses, and when one realizes that they are at a tempera

In passing around the pipes, the gases de

posit large quantities of soot on the surfaces, ture of 400° to 600° F., some idea may

thereby rendering the pipes almost useless. To be had of the amount of heat thus wasted. make the economizer a commercial success, the With chimney or natural draft, some of pipes are kept clean by means of scrapers this loss is really desirable, for draft is

which move slowly up and down, the sharp

edges scraping off the accumulation of soot. necessary, and natural draft depends The mechanism for moving the scrapers is actupon the difference in temperature be- uated by a belt from a pulley. tween the gases in the chimney and the air outside. With mechanical draft,

Uses for the Heat whether forced or induced, this condition is not necessary, for the apparatus main

Transferring to water a large portion

of the heat units in the gases, provides tains the draft intensity regardless of the difference in temperature. A great sav

large quantities of hot water, which may ing may be effected by preventing the es

be used according to the needs of the

factory. It may be the means of heating cape of this beat; in fact, its utilization by means of an economizer will save

the buildings, thereby saving steam, from 10 to 20 per cent.

which, in turn, saves fuel. Or it may be used for boiling, washing, or dyeing in

textile mills. Furthermore, it may be deThe Economizer

sirable to use it for feeding the boilers. This apparatus consists of numerous In a boiler plant the hot water reduces vertical pipes so connected into headers the coal bill, for with cold feed-water that water may be continuously pumped considerable fuel is necessary to heat the (226)

(Rights of publication reserved by Author)

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