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Be a watchmaker-you can learn this profitable trade by correspondence in a few weeks in your own home by the DeSelms Chart System. After you complete the course you will know a watch Irom A to Z. You will know just what the matter 1s and how to repair one. When you gradu. ate you wdl be a practical watchmaker and repairer and competent to fill any position. Positions for our graduates. Ask for our Free Book. It explains our system and terms. Tho DeSelms Watch Sehool, 19 Perry St. Attien, Ind.

For September

Get ready now to make Fall business move as you want it.

Remember that your market is limited to those who know your wares. .. .. .. .. ..

Let us make the Booklet, Catalogue or Announcement that will catch the eye, then the mind and finally the pocket book of the buyer you are looking for. . .

( We have a reputation for producing printing that “gets there,” and when you use it your stamps will not be wasted. .. .. .. Q Let us take this matter up with you at once — by return mail — and we will give your communication such marked attention that it will insure you a future customer of the i. i.

OVER HIS FELLOWS looms the man who has a specialized education. There is more opportunity for the Technical man today than for workers in any other line of industry. There are not enough Technical schools to supply the demand for trained Electricians, Engineers, Architects, Draftsmen, etc. Turn to the “Help Wanted" columns of any daily newspaper and compare the number of clerks, cashiers, book-keepers, stenographers, etc., looking for work with the large number of employers seeking to engage men having technical training.

No matter what your age, location, or present employment may be you can start now to fit yourself for a well paid position of trust and responsibility, where you will be the directing force instead of a mere piece of machinery.

We employ no agents to annoy you with repeated calls at your home or place of business. We talk to you only by mail. The money you pay us is not used to maintain an expensive organization of high priced agents, but is used to give you better instruction at a lower cost. AMERICAN SCHOOL OF CORRESPONDENCE

CHICAGO, ILL., U. S. A.

COUPON-Cut out and mail today Please send me 200 page hand-book. I am interested in the course marked “X."

Structural Engineering Telegraphy
Mechanical Engineering ....Sheet Metal Pat. Draft'g
Electrical Engineering Heating, Vent. Plumbing
Structural Drafting

....Locomotive Engineering Mechanical Drawing .....Textiles Hydraulics

College Preparatory Course ...Sur 'eying

(fitting for entrance engin. ..... Architecture

eering schools)

NAME

ADDRESS

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Secured promptly and with special regard

to the legal protection of the invention. HAND BOOK FOR INVENTORS AND MANUFACTURERS SENT FREE UPON REQUEST.

Consultation Free. No charge for opinion as to the patentability and Commercial Value of Inventors' Ideas.
HIGHEST REFERENCES FROM PROMINENT MANUFACTURERS.

C. L. PARKER, Patent Lawyer

Patents, Caveats, Trade Marks, Copyrights, Reports as to Patontability, Validity

and Infringement. Patent Sults Conducted in all States. REFERENCES: Globe Machine and Stamping Co., Murray Engineering Co., Morgan Machine and Engineering Co., Berkshire Specialty Co., Stewart Window Shade Co., Macon Shear Co., Acme Canopy Co., Lippencott Pencil Co., Salisbury Tire Association of America, Inventors' and Investors' Corporation, Oakes Manufacturing Co., Cox Implement Co., Columbus Buggy Co., National Index Co, By-Products Co., Alabama Brewing Co., National Offset Co., Antiseptic Supply Co., Richmond Electric Co., Railway Surface Contact Supplies Co., National Electric Works

Mr. Parker on November 1st, 1903, after having been a member of the Examining Corps of the U. S. Patent Office for over five years, resigned his position as Examiner to take up the practice of patent law. Address 144 DIETZ BUILDING : :

WASHINGTON, D. C.

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Booklet explaining how mailed FREE.
Sixteen years' experience. Patent ON COMMISSION
Sales exclusively. If you have a
PATENT for sale, call on or write If you wish to buy or sell a patent write for my booklet
WILLIAM E. HOYT, Patent Sales

"How to Sell a Patent" or my list of patents for sale. Specialist, 288 Dun Building, N. Y. City

E. L. PERKINS, President Inventors' Exchange | 82 Broad Street,

BOSTON, MASS. SGUARANTEED. PATENTS SECURED OR FEE RETURNED.

Send model or sketch for free report as to Patentability. Send for finest publications ever issued for

free distribution HOW TO OBTAIN A PATENT," with 100 MECHANICAL MOVEMENTS Illustrated and described, and "WHAT TO INVENT,"containing valuable LIST OF INVENTIONS WANTED. ONE M

offered for one invention, $16,000 for other. Patents advertised free in "WORLD'S PROGRESS." Copy free.

615 F Street, WASHINGTON, D, C, I PATENT WHAT INVCATI

Founded by Mathew Carey, 1785
IENT YOU INVENT!

A House in touch with Three Centuries
Your Ideas May Bring You a Fortune !
$1,000,000 OFFERED FOR ONE INVENTION

THE PIONEER INDUSTRIAL

PUBLISHERS OF AMERICA
FREE BOOK; gives list of inventions wanted; tells

how to protect them. Write for it.
Patent Obtained or Fee Returned
o charge for report as to patentability; send sketch

or model. Patents advertised for sale free.
WOODWARD & CHANDLEE, Attorneys
1 253 F Street
Washington, DC

Industrial Publishers, Booksellers and Importers
810 Walnut Street Philadelphia, Pa., U. S. A.

EVANS, WILKENS & CO.,

HENRY CAREY BAIRD & Co.

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Our New and Revised Catalogue of Practical and Scientific Books, 94 pages, 8vo. (March 1.1907): Catalogue of Chemical Technology and General Chemistry, July 1. 1905 (New and Up-to-Date): a Catalogue of Books on Metallurgy, Mining, Prospecting, Mineralogy, Geology. Assaying, Analysis, etc.: a Catalogue of Books on Steam and the Steam Engine, Machinery, etc.; a Catalogue of Books on Sanitary Science, Gas Fitting, Plumbing, etc and our other Catalogues and Circulars, the whole covering every branch of Science applied to the Arts, sent free and free of postage to anyone in any part of the world who will furnish his address.

at your home. For a limited time we will give free, for advertising purposes, 96 music lessons for beginners or advanced pupils on either Piano, Organ,

Banjo, Guitar, Cornet, Sight Singing, Violin or Mandolin (your expense will only be the cost of postage and the music you use, which is small). We teach by mail only and guarantee success, Established seven years. Hundreds write: "Wish I had heard of your school before." Write to-day for booklet, testimonials and free tuition blank.

Address: U. S. SCHOOL OF MUSIC, Box 130G, 225 Fifth Avenue N. Y.

Mention Technical World Magazine

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L'NGINEERS, architects,

draughtsmen; profes

sional or students; in business activity or during vacation;. all of you need to know about Devoe drawing and sketching supplies Brushes, colors, canvas, papers, pencils, boards; everything you need is ready for you. We are headquarters in America for such supplies, and most of you know it.

Devoe quality is of the highest type,
always. Be sure you have Devoe.
Write for catalogue. Address
Department C.

Devo e

176 Randolph Street, Chicago Fulton and William Sts., New York 1214 Grand Avenue, Kansas City

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