1902 Can it be in 1902 Again, Was is really like this, Must be, Yes

https://antiquemachinery.com/images-November-1902/Nov-20-1902-pg-1679-l-.jpeg.jpeg

pg-1679 MACHINERY November 20 1903

ohms per spool. This might not fit a commercial size of wire, and would be modified in practice with this end in view. For a shunt solenoid the allowance for magnetic leakage should be 50 per cent. ; the above figures are on this basis. The accompanying illustration shows a method of constructing solenoid spools. The spool shank consists of a piece of heavy brass tubing. One end of this tube is screwed or expanded into a brass sup-port, suitably arranged to bolt on to the frame of the machine. The upper head consists of a steel or cast-iron plate, with a boss in the center which is forced into the brass tube. This tube is insulated by a layer of micanite or vulcanized fiber, over which the wire is wound. The ends of the coil are insulated by fiber washers, three at the upper and one at the lower end. The middle washer at the top is slotted to lead the wire in to the center of the coil. When the winding is put on, each layer should be shellacked, and it is a good plan to put on a layer of micanite when half the wire is on and complete the winding over this. When wound, a layer of press board is put on and the outside served with cord and given a coat of black shellac. Rubber buffer washers should be placed around the magnet cores to reduce the shock when lifting, or the constant ham-mering will break things. Th._ cores may hang a bit at the start, but when they get started the rise is very sudden. The bot-torn yoke is suitably arranged to connect with the brake lever by means of links and pins. The yokes should have all cor-ners well rounded to avoid magnetic leak-age. The steel used should be as soft as possible.

Graphic Integration for Volumes.
BY EDGAR H. BERRY. At page 1456 "Anonymous" requests a formula for the volume a b c, Fig. 1, formed by the intersection of a cylinder and a sphere. In lieu of a'formula I offer the graphic solution outlined below : In general any volume is equal to Sz d x, where z = the area of that cross-section of the volume which lies at a distance x from the origin. Also any area is equal to f y d x, where y = the width of the area at a distance x from the origin. If we now determine the values of z corresponding to various values of x, and draw a plane curve whose ordinates y are numerically equal to z, the area y d x will be numerically equal to the volume z d x. Thus the required volume may be obtained indirectly by measuring the areaf ydx. Draw a side and end view of the cylin-der and sphere as shown in Fig. 2 ; then F1 A5 A7 C7 is the required volume. It will
AMERICAN MACHINIST
be most convenient to determine the vol-ume F1 C7 F7 and subtract this from the volume of the cylinder F1 A5 A7 F7. In the side view draw the ordinates A B C, etc., at convenient distances apart. With radius B B1 draw the circle B2 B3 B4, with radius C C1 draw the circle C2 C3 C4, etc., all of these circles having the common center 0, coinciding with the center of the sphere. The area of a cross-section through the required volume at B is evidently equal to the area of the cross-section of the cyl-inder, diminished by the portion cut away by the sphere. This latter portion is rep-resented by B2 B3 B4. Similarly at C the cross-section cf the cylinder must be dim-
1679
numerically equal to the volume cut away by the sphere from a cylinder of diameter A5 A7 and length A5 F1. In graphic processes the principle re-mains the same regardless of the scale employed, but in actual practice an unsuit-able scale may make the diagram too large or too small for conveinent use, or it may so distort the curves that a trifling error in a reading may be greatly magnified in the final result. It is not necessary that the same scale be employed for all the operations, provided that a suitable cor-rection is made in the answer, and it may often be very advantageous to draw differ-ent parts of the diagram to different scales.FI3. "F, E D: C7 B3 FIG. 2 Section at B Section at we,...tion at D
_ __- Section at E Section at F Shaded areas represent portions cut away by sphere.
FIG. 3. GRAPHIC INTEGRATION OF VOLUMES.
inished by the area C2 C3 C4, at D it must be diminished by the area J D2 D3 D4, etc. The areas to be subtracted are reproduced for greater clearness in Fig. 3. Determine these several areas, pref-erably by means of a planimeter, and on each of the ordinates B, C, etc., Fig. 2, lay off above the top of the cylin-der a bight representing the correspond-ing area. Thus B5 B6 corresponds to area B2 B3 B4, C5 C7 corresponds to area C2 C3 C4, etc. The last ordinate F1 F6 corresponds, of course, to the area of the entire cylin-der, as at this poi-it the cross-section of the required volume is reduced to zero. Through the points B6 C6, etc., draw a smooth curve and measure the area F, F1 with a planimeter. This area is In the case under consideration, assume the planimeter to be set to read areas in square inches. Then, if the side and end views are drawn to a scale of -I- , the true area of each cross-section would be ob-tained by multiplying the planimeter read-ing by e. If the ordinates representing these areas are now laid off to such a scale that a hight of inches is laid off for every square inch of the planimeter reading, each inch of length represents e t square inches of cross-section. As the abscissae of the final carve are laid off on the side view which is drawn to a scale
of I , each square inch of area underneath

WALTHAM, MASS.

pg-1680

242 MACHINERY January, 1912
Rivett Precision Lathes-for 1912. And a grinder too. #3.

No one could take the lead and hold it for as many years as lie between 1884 and 1912—years particularly noted for new and improved machine designs—unless there was an absolutely first-class proposition back of it. RIVETT LATHES are first-class—not only in design, workmanship, operation and production, but first in their class, the first precision lathes built, and the fact that the demand for them increases steadily, year by year, is the best proof that for accuracy, efficiency and profitable production within their range, there are no machines that equal RIVETT PRECISION LATHES In 1911, when most Lathe Manufacturers did not more than 10% of the normal business, we sold more Precision Lathes than in any previous year—and we have no salesmen on the road, our Lathes sell themselves. Our latest catalogue illustrates the Lathes in all sizes, with attachments, etc., and also shows the famous Rivett Precision Grinding Ma-chines and the Rivett-Dock Threading Tool. Ask us for a copy—it will interest you.

RIVETT LATHE MANUFACTURING CO.
(Brighton District), BOSTON, MASSACHUSETTS, V. S. A. Rivett Lathes are carried in stock by Hill, Clarke & Co., New York, Philadelphia, Chicago. Pacific Tool & Supply Co., San Francisco. Motch & Merryweather Machinery Co., Cleveland, Ohio. FOREIGN AGENTS: Buck & Hickman, Ltd., London, Birmingham, Manchester, Glasgow. Fenwick Freres & Co., Paris, Brussels, Liege, Turin, Zurich and Barcelona.
10,000 to 75,000 Revolutions per .zninute

pg-1681
MACHINERY
January, 1912

"----Coes Genuine Wrench----is the general utility wrench and the special purpose wrench combined. In the machine shop, the engine room, in the home—on the railroad, on ship-board—in construction work, repair work—mechanical work, of any and all kinds—there is need for a "Coes" wrench—and a "Coes" wrench to meet it. The making of a wrench is a matter of price and principle with Coes, and the fact that 80 per cent. of all the high grade wrenches made in the United States are turned out in the Coes factory is good evidence of their superiority. Nothing but the best enters into the makeup of the tool—it is designed right, made from selected material, by skilled workmen. Every part is inspected before assembling, and every finished wrench subjected to rigid tests before it is stamped with the maker's name. There are no loose parts to get out of order, no complicated adjustments to be made, handles are of seasoned hard wood, or steel, and the wrench practically indestructible.

Agents : JOHN H. GRAHAM & CO. 113 Chambers Street, New York. 14 Thavies Inn, Holburn Circus, London, E. C. Copenhagen, 0. Denmark.

January. 1912
MACHINERY
pg-159

"Coes" wrenches cover every kind of service, from the lightest to the heaviest. The line includes five styles and fifty sizes, ranging from the 4-inch Steel Handle Model to the 72-inch Key Model.

The Knife Handle is the every-day wrench. The Steel Handle, the rough usage wrench, defying dampness, heat, and tool racking hard work, and the Key Model, with its 12-inch jaws and great leverage, is designed for railroad and engineering. The "Goes" trade mark is plainly stamped on every wrench. Order by name from your dealer.

pg-1682

MACHINERY January-1912

CLAMP IT TO ANY LATHE BED.
The $5 00 Tool Holder will surely pay for itself twice in one year and you can put it on to any of your old lathes.
IF TAKES BUT A MINUTE TO

$5-°° vs. $500°
$5.00 is the cost of one WELLS TOOL HOLDER.
$500.00 is the cost of one High Speed Engine Lathe on which a Wells Tool Holder should be used.
The $500.00 Lathe has no place to put tools, wrenches, cans, blue prints, waste, etc., except on the lathe bed, or bench, where they are always getting lost or knocked off on to the floor.
The $5.00 Tool Holder provides a place for all these things. The $500.00 Lathe may pay for itself in two years, but
126 MACHINER Y January, 1912

Send for Catalogue of Speed Lathes, Lathes with Draw-in Cotlets, Turret: Cross Carriages, etc. Screw Machines, Tool Grinders, Tapping and Threading Machines, etc.
Wells Tool Holder

0 UNIVERSAL The Wells Universal Grinder
NOT AS LARGE CAPACITY AS SOME but is designed for grinding all ordinary sized tools, etc. It handles work up to 6" diam. and 14" long, quicker and just as accurately as any larger machine because it is com-pact, easier to handle and does not have any long over-hanging slides, etc. It costs less than a larger machine. FOR SPECIAL WORK We furnish a great many machines fitted with just the attach-ments needed for any special work or job at so low a price that you can afford to keep a machine always set up and ready for use, and so save much time in not changing over from one kind of work to another.
Bryant Chucking Grinders

need scan 1683

MACHINERY January, 1912

The Story of "Reed" Lathes
Away back in 1875, in a little one-room plant at Worcester, Massachusetts, six men all bent on one purpose—built the first "Reed" Lathe. Their "purpose" was to make a lathe so good that its virtues would travel and its sales grow. Then came the manufacturer—he scrutinized the lathe care-fully—it looked "good"—he tried it. It did the work—did it so well that four acres of floor space are now required to make enough "Reed" Lathes to supply the demand. And on the strength of this demand we ask you, who do rail-road and other work of heavy character, to consider the lathe here illustrated—the New Heavy Duty 24-inch "Reed". The headstock, bed, tailstock, carriage and apron are of massive construction and extra strength. It has double frictions for both feeds, and the quick change gear mechanism, with strong coarse pitch steel gears, gives 54 instantly available changes to both lead screw and feed rod. In this machine, the screw and rod are never running at the same time. But the lathe itself is always running—and a twenty-minute demonstration is worth an hour of talk. Chances are there's one right near Will you go and see and be convinced?

We will mail catalogue and list of users in your neighborhood, on request.
REED COMPANY, Worcester, Mass.
ing Agent - .MANNITIG, MAXWELL & MOORE, Inc., 85=87.89 Liberty St., New York, N. Y.

pg 1684

225 MACHINERY January, 1912
Hendey Pillar Metal Shaper Machine Co. January, 1912 MACHINERY 225 HENDEY PILLAR SHAPERS

Pre-eminently easy to operate. A shaper which can be quickly changed and set to handle the different classes of work presented during the day. Of a design which readily adapts itself to motor drive. Made in 4 sizes, 15", 20", 24", and 28" stroke. THE HENDEY MACHINE CO" UNITED STATES AGENTS: Manning, Maxwell & Moore, New York, Buffa. Mexico and Japan; J. L. Osgood, Buffalo; Pacific Tool and Supply Co., '- Wright & Co., St. Louis; R. V. Whitacre & Co., St. Paul; Strong-Carlisle couver, St. John, New Brunswick; Williams & Wilson- Montr EUROPEAN AGENTS: 'chuchardt & Schutte, Berlin, Vier Brussels, Bilbao, MD Chas. Churchill & Co., Ltd., T
*****10-19********below becker v mill***************************

pg 1685

37 MACHINERY January, 1912
BECKER Verticle mill.
January, 1912 MACHINERY

BECKER 11;1' Milling MACHINE Hyde PARK MASS MODEL

Accessible Working Parts and Simple, Convenient Control are Features of Becker Milling Machines
There are no hidden mechanisms in the column requiring lubrication, and there is a con-spicuous absence of pilot wheels and crank levers. All working parts are readily accessible and the control throughout is simple and easy to manipulate. The open belt drive for all average work affords flexibility and does away absolutely with the back-lash that is de-veloped in a gear train, with its consequent crumbling effect upon the cutter teeth. The Model C Becker is a machine of unusual strength and power, with large direct spindle drivers and wide double belts of high velocity, fitted with a powerful, efficient, variable speed mechanism that is quickly and easily operated, and has feed eh lnges that can be adjusted to exactness while under cut.
Send for the catalog with full line of Mill

The Becker Milling Machine Co •
AGENTS—Mies-Bement-Pond Vienna, Austria; Stoc Allied Machine
Co., New York. Selson Engineering Co., Ltd., LondGn, England Sck-icna,d. s 4r1 holm, Sweden; St. Petersburg, Russia; Copenhagen, Denmaic; Budapest, ungary; S' 1 ry Co. of America, Paris, France; Belgium, Holland; Portugal, Spain and Switz, eland:
ti

MACHINERY pg-137

pg 1686

18 MACHINERY January, 1912 Landis OD Grinder Grinding Machine
Landis Grinding Machines

The Lathe is No Longer a Finishing Tool
With the introduction of high speed steel and a corresponding development of the high power rapid reduction lathes these machines are economical as stock removers up to within a certain limit of finished size. It is no longer considered good practice to reduce the work to near size on the lathe, and finish with a file and emery cloth, as it would be neither round, straight nor uniform, and to attempt it would require the services of a skilled mechanic and considerable time. The grinding machine is the acknowledged tool for finishing and polishing, as it has rests for supporting the entire length of the work and the action of the wheel on the work does not tend to dis-tort the shape of the piece being ground. Good shop practice prescribes the combination of the lathe and grinding machine as the eco-nomical solution for the production of accurately finished work. The rougher the cut, the cheaper it can be accomplished on the lathe, and the threaded surface does in no way interfere with the successful grinding. Landis Grinding Machines are especially economical finishing tools, having features for conven-ience and time saving, as well as for obtaining accuracy and sizing.
Increased Output To accurately grind work rapidly and economically re-quires a machine of certain requisites—Rigidity of all its members is vital, as well as the preserv-ing of all alignments—The design must be such that the levers and adjustments are within easy reach of the operator—The feeds must be automatic so that work can be pre-pared for following operations—Speed changes must be made quickly-- rovision must be made for slow work and fast traverse ,,)eeet, or vice versa, which is necessary for the different stages of the operation—
Reduced Cost All parts must be built strong enough to perform their func-tions without danger of break or strain, necessitating repairs—The construction must be such that no time is lost adjust-ing the machine for the work—That every wearing part of the machine is well oiled, so as to give best results—That a large variety of work can be done on the same ma-chine (this especially is valuable in small plants) , or that a large output of duplicate parts can be had—The Landis Grinding Machine embodies all these essentials. Send for our New Catalogue, which will tell you about these Improved Grinding Machines.
ANDIS TOOL COMPANY, Waynesboro, Pa.
• tsal G, • tiling Machines, Plain Grinding Machines, Plain Grinding Machines with Gap, Crank Grinding Machines, Internal Grinding Machines, Cam Grinding Attachments. New York Office, Fulton Building, 50 Church Street, Walter N. Foster Company, Managers. €-,-stoe Machine Tool Co., Birmingham, Ala. Harron, Rickard & McCone, San Francisco and Los Angeles. C. W. Burton, rd Glasgow. Schuchardt & Schutre, Berlin, Stockholm, St. Petersburg, Copenhagen. Alfred H. Schutte, Cologne, Barcelona and Bilbao. Donauwerk Ernst Krause & Co., Wien, Prag and Budapest. A. R. Williams Machinery Montreal, Canada. Ar lrews & George, Yokohama, Japan.
a,- adaipn.ia, Atla: nil Sch-,

pg 1687

95 MACHINERY January, 1912 vtl Machine

It's your work that counts
The principles of this machine will mean more to you than long lists of production records. The Acme works two tools from the side and two from the end on each of the four bars of stock, if the job requires it. All the tools work at the same time and the piece is finished in the time of the longest single operation. In addition to the usual cuts, this method provides for the use of tools for shaving and reaming in fine diameters, and operations from the side which are usually done on extra machines. On the Acme no extra time is added for these cuts. We could give you production records but we would rather take your samples and tell you what the Acme will do on your particular work. May we quote you speeds ?
THE NATIONAL-ACME MANUFA. TUR! AUTOMATIC SCREW MACHINES

AND To.iR CLEVELAND, Of
.NEW YORK
CHICAGO BOSTO:
GENER2. 7, FOREIGN REPRESENTATIVES—Alfred H. Barcelona. Schuchardt & Schutte, Berlin, London,
II

****

pg 1688

MACHINERY January, 1912 vtl Machine

It is a test----'s your work that counts
The principles of this machine will mean more to you than long lists of production records. The Acme works two tools from the side and two from the end on each of the four bars of stock, if the job requires it. All the tools work at the same time and the piece is finished in the time of the longest single operation. In addition to the usual cuts, this method provides for the use of tools for shaving and reaming in fine diameters, and operations from the side which are usually done on extra machines. On the Acme no extra time is added for these cuts. We could give you production records but we would rather take your samples and tell you what the Acme will do on your particular work. May we quote you speeds ?

THE NATIONAL-ACME MANUFA. TUR! AUTOMATIC SCREW MACHINES

* *******

************pic 18*********10-22****wire*********************

pg 1690

MACHINERY January, 1912 B-&-S

It is a tttteeesssttt's your work that counts
The principles of this machine will mean more to you than long lists of production records. The Acme works two tools from the side and two from the end on each of the four bars of stock, if the job requires it. All the tools work at the same time and the piece is finished in the time of the longest single operation. In addition to the usual cuts, this method provides for the use of tools for shaving and reaming in fine diameters, and operations from the side which are usually done on extra machines. On the Acme no extra time is added for these cuts. We could give you production records but we would rather take your samples and tell you what the Acme will do on your particular work. May we quote you speeds ?
THE NATIONAL-ACME MANUFA. TUR! AUTOMATIC SCREW MACHINES AND To.iR CLEVELAND, Of
.NEW YORK
CHICAGO BOSTO:
GENER2. 7, FOREIGN REPRESENTATIVES—Alfred H. Barcelona. Schuchardt & Schutte, Berlin, London, (antiquemachinery.com)
II

*****************10-19**************

1689
MACHINERY
January, 1912

Star Screw Cutting Engine Lathes Are Built for Service Not for Looks

13 Inch Star Lathe
And they are giving service of the very best kind—money making service— in hundreds of shops. In one plant alone there are 175 Star Lathes on work of th e very highest quality. When we discount the value of high finish, do not for a minute think that Star Lathes are rough, crude affairs—for they are not. They have all the fine work-manship that is neces-sary for accurate, eco-nomical production—but none of the high polish that adds to nothing but looks.
Following are examples of finish on Star Lathes — finish that counts in production efforts. The change gears have rounded edges to avoid injuring the hands; change gear yoke has improved intermediate stud, adjustable from outer end; all adjusting screws have a uniform head to fit tool post wrench; patented split ring washers hold change gears in place, are convenient to operate, and facilitate quick shifting; screws, nuts and small partsliable to be bruised are case hardened; sliding surfaces are hand scraped to,per-feet bearing; and ample facilities are provided to compensate for wear.
* * sl * 3/4 SFNICA FALLS MANUFACTURING COMPANY 1 )1 * LldiIanks Co., Ltd., Montreal, Toronto, St. John, N. B., Calgary, Saskatoon, Winnipeg, Vancouver. 1 287 ***************************************************
For rapid and accurate pro-duction, at low costs, in light, duplicate manufacturing, in the tool-room and experimen-tal laboratory, for automobile accessory and electrical man-ufacturing and similar lines of work, the Star is without serious competition. Made in three sizes, 9-, 11-, and 13-inch swing, can be fitted with electric motor drive, long floor legs, oil pan or bench legs, and many attachments affording a wide range of work
Seita for the New Catalog.
11-inch Star Lathe with Automatic Turret Attachment, Oil=pan, Double Tone Blocks, etc.
REET SENECA FALLS, NEW YORK

this is a test this is only a test

MACHINERY pg-1691

January, 1902

teeeessstttKnown for their Rigidity, Sim-plicity, Efficiency and Maximum of Output. Best materials used in manufac-turing these machines ;hardened and ground where necessary. Made to stand long and hard usage. It is one of our popular size milling machines and pos-sesses all the latest im-provements and the following valuable fea-tures
GARVIN No. 11 Universal Milling Machine Use Code....Aneroid
ASK A GARVIN USER
Double Geared Dividing Head SOLID TOPEEMMIsia Square Locked—Two Taper Gibs to Slide Fit.
Positive Feed Change Box (Patented). The lengthening of Slide Fit in Swivel, etc., etc.
DIMENSIONS
Automatic Table Feed . . In-and-Out Adjustment . Vertical Adjustment . . .
SEND FOR CIRCULAR No. 128
FOR FURTHER INFORMATION
IMMEDIATE DELIVERIES
MANUFACTURED BY
20 in. 7 in. 18 in.
ASK YOUR DEALER OR WRITE US DIRECT
GARVINMACHINE COMPANY

January, 1912 ACME
MACHINERY pg-1692

Known for their Rigidity, Sim-plicity, Efficiency and Maximum of Output. Best materials used in manufac-turing these machines ;hardened and ground where necessary. Made to stand long and hard usage. It is one of our popular size milling machines and pos-sesses all the latest im-provements and the following valuable fea-tures
GARVIN No. 11 Universal Milling Machine Use Code....Aneroid
ASK A GARVIN USER
Double Geared Dividing Head SOLID TOPEEMMIsia Square Locked—Two Taper Gibs to Slide Fit.
Positive Feed Change Box (Patented). The lengthening of Slide Fit in Swivel, etc., etc.
DIMENSIONS
Automatic Table Feed . . In-and-Out Adjustment . Vertical Adjustment . . .
SEND FOR CIRCULAR No. 128
FOR FURTHER INFORMATION
IMMEDIATE DELIVERIES
MANUFACTURED BY
20 in. 7 in. 18 in.
ASK YOUR DEALER OR WRITE US DIRECT
GARVINMACHINE COMPANY

pg 1693

<div id="e19-pg19 was---garvin 1-1-2 text" style="position:absolute; left:20; top:2660; width:1050; height:774;">
January, 1912 ACME 
MACHINERY pg-1692

Known for their Rigidity, Sim-plicity, Efficiency and Maximum of Output. Best materials used in manufac-turing these machines ;hardened and ground where necessary. Made to stand long and hard usage. It is one of our popular size milling machines and pos-sesses all the latest im-provements and the following valuable fea-tures  
GARVIN No. 11 Universal Milling Machine Use Code....Aneroid  
ASK A GARVIN USER  
Double Geared Dividing Head SOLID TOPEEMMIsia Square Locked—Two Taper Gibs to Slide Fit.  
Positive Feed Change Box (Patented). The lengthening of Slide Fit in Swivel, etc., etc.  
DIMENSIONS  
Automatic Table Feed . . In-and-Out Adjustment . Vertical Adjustment . . .  
SEND FOR CIRCULAR No. 128  
FOR FURTHER INFORMATION  
IMMEDIATE DELIVERIES  
 MANUFACTURED BY  
20 in. 7 in. 18 in.  
ASK YOUR DEALER OR WRITE US DIRECT  
GARVINMACHINE COMPANY

pg 1694

<div id="e19-pg19 was---garvin 1-1-2 text" style="position:absolute; left:40; top:2660; width:1050; height:774;">
January, 1912 ACME 
MACHINERY pg-1692

1695

1696

1697

1698

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1700

back inside cover

Rivett ID Grinders, Yes I have mostly one of these. Came from Detroit and Ann Arbor Michigan, They are real.

IN STOCK.
GRINDING MACHINES To carry from 8" to 18" wheels PATENTED PULL COUNTERSHAFTS AND BELT SHIFTERS In standard sizes POLISHING MACHINES To carry from 8" to 14" wheels

•
A copy of our catalogue is of interest. Have you one on hand?

F. L. GROBET
GROBET SWISS FILES
and other high-class tools are shown in "1 he Tool=Monger"—it's 464 pages, and will be mailed on receipt of 8 cents in stamps.
MONTGOMERY & CO. 105-107 Fulton St. NEW YORK CITY

Standard. Type

UNIFORM EFFICIENCY IS INDUCED BY BRISTOL RECORDERS
Many users have testified that Bristol's 'Recording Instruments have helped them to maintain uniformly efficientoperating conditions. The continuous night and day ink records traced automatically by these recorders on round paper charts show actual results obtained, and will help you as they have thousands of others. Write for Bulletin 1200=16 and recommendations THE BRISTOL CO. 4203 Waterbury, Conn.
EST.
1863
BLACK DIAMOND FILE WORKS
TWELVE MEDALS awarded at INTERNATIONAL EXPOSITIONS.

INC.
1893
GRAND PRIZE GOLD MEDAL at Atlanta, Ga., 1895.
Catalogue sent free to any interested file user upon application. C. & H. BARNETT COMPANY, - Philadelphia, Pa. Owned and operated by Nicholson File Co.

DELTA DELTA FILE WORKS, PHILADELPHIA PA
The highest grade file made. The fife you will eventually use.
Ta cAG 0 RAWHIDE
MANUFACTURiNG COMPANY
SMART.
Fl LES OF -VA QUALITY

Rotary Magnetic Chucks
Multi-Tooth Type ns Made with a dozen different- 'Styles of face, also with detachable face plates Asbestos Wire for Wet Chuclis 0. S. WALKER & CO. WORCESTER, MASS.

"WE ORIGINATED RAWHIDE PINI
OVER THIRTY YEARS OF EXCLUSIVE RA EXPERIENCE BACK OF OUR PRO% -CT 1301 ELSTON AVE., CHICAGO, ILL.

Attentio, given, exclusively
W

made "toUR SPECIAL REQUIREMENTS

t no probkensi-orconditions, Ex-perienev enables-us to give practie-a+ and valuable inforrnatilarelaring to taps and die*of all, kinds and styles.:: Send us your specifications.- O-ar goods, priees,and shipments will please-you. NUFACTURING COMPANY, Greenfield,. Mast§:.'
DROP PRESSES
For all Purposes MINER dc, PE GX MFG. CO., PROPRIETORS OF Our Specialty THE PECK DROP -PRESS WORKS NEW HAVEN, CONN.
Never Loosens its Grip, as the Handle does not Rotate. Years on the Market, and Superior to all Others. Beware of Imitation.—That's All ! J. M. CARPENTER TAP & DIE COMPANY PAWTUCKET, R. I., U. S. A. See our Ad. on Page 238
NICHOLS TAP AND REAMER WRENCH

REGISTERED .CaNDEViik C ' •

Nipple Threading with new Rivette Dock Threading tools, Inside Cover

Nipple Threading with RIVETT DOCK Threading Tools
F you want accurate threads fast, study the method 1 of the Cadillac Motor Car Company (Detroit). The drop-forged nipples shown are used to draw the valve chambers and cylinders together. The limit of variation allowed is 0.002" only on the pitch diameter. Two Rivett Dock Threading Tools are used, two sets of nipples being threaded at the same time, which of course greatly lowers labor costs. With this fixture, equipped with Rivett Dock Tools, output is 220 nipples per day. And this is "Going Some." In Rivett Dock Tools the chasers are ground after hardening to exact size. The cutting of the thread is progressive—secured by an indexing threading chaser and by bringing successive cutting edges into opera-tion. This reduces the strain on any one cutting edge and presents a sharp edge to the work always. If you want good threads, accurate threads, and threads cut quickly, you want Rivett Dock Thread Cutting Tools.
Rivett Lathe & Grinder Co.

(Brighton District) BOSTON, MASS., U. S. A. DOMESTIC AGENTS: Prentiss Tool & Supply Co., New York City, Buffalo, Rochester and Syracuse, N. Y. ; Boston, Mass. ; Scranton, Pa. Motch & Merry-weather Machinery Co. Cleveland and Cincinnati, Ohio; Detroit, Mich. ; Pitts-burgh, Pa. W. E. Shipley Machinery Co., Philadelphia, Pa. Marshall & Huschart Mchy. Co., Chicago, Ill. Pacific Tool & Supply Co., San Francisco, Cal. FOREIGN AGENTS: For United Kingdom, Buck & Hickman, Ltd., 2 and 4 Whitechapel Road, London, E. C., 55 Station St., Birmingham, 3 Cross St., Manchester and 27 Cadogan St., Glasgow, Scotland. For France, Belgium, Italy, Switzerland and Spain, Fenwick Freres & Co., 8 Rue de Rocroy, France. For Germany, Austria-Hungary, Holland, Luxemburg and the Balkan States, F. G. Kretschmer & Co., Frankfurt, a/M., Germany.

IN STOCK.
GRINDING MACHINES To carry from 8" to 18" wheels PATENTED PULL COUNTERSHAFTS AND BELT SHIFTERS In standard sizes POLISHING MACHINES To carry from 8" to 14" wheels

A copy of our catalogue is of interest. Have you one on hand?

Standard. Type

UNIFORM EFFICIENCY IS INDUCED BY BRISTOL RECORDERS
Many users have testified that Bristol's 'Recording Instruments have helped them to maintain uniformly efficientoperating conditions. The continuous night and day ink records traced automatically by these recorders on round paper charts show actual results obtained, and will help you as they have thousands of others. Write for Bulletin 1200=16 and recommendations THE BRISTOL CO. 4203 Waterbury, Conn.
EST. 1863
BLACK DIAMOND FILE WORKS
TWELVE MEDALS awarded at INTERNATIONAL EXPOSITIONS.

INC. 1893
GRAND PRIZE GOLD MEDAL at Atlanta, Ga., 1895.
Catalogue sent free to any interested file user upon application. C. & H. BARNETT COMPANY, - Philadelphia, Pa. Owned and operated by Nicholson File Co.

DELTA DELTA FILE WORKS, PHILADELPHIA PA
The highest grade file made. The fife you will eventually use.
Ta cAG 0 RAWHIDE
MANUFACTURiNG COMPANY
SMART.
Fl LES OF -VA QUALITY

Rotary Magnetic Chucks
Multi-Tooth Type ns Made with a dozen different- 'Styles of face, also with detachable face plates Asbestos Wire for Wet Chuclis 0. S. WALKER & CO. WORCESTER, MASS.

"WE ORIGINATED RAWHIDE PINION GEAR.
OVER THIRTY YEARS OF EXCLUSIVE RA EXPERIENCE BACK OF OUR PRO% -CT 1301 ELSTON AVE., CHICAGO, ILL.

made "toUR SPECIAL REQUIREMENTS

DROP PRESSES
For all Purposes MINER dc, PE GX MFG. CO., PROPRIETORS OF Our Specialty THE PECK DROP -PRESS WORKS NEW HAVEN, CONN.

NICHOLS TAP AND REAMER WRENCH
Never Loosens its Grip, as the Handle does not Rotate. Years on the Market, and Superior to all Others. Beware of Imitation.—That's All ! J. M. CARPENTER TAP & DIE COMPANY PAWTUCKET, R. I., U. S. A. See our Ad. on Page 8

REGISTERED