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Leroux, C.- A Practical Treatise on the

Manufacture of Worsteds and Carded

Comprising Practical Mechanics, with Rules and Calculations applied to
Spinning; Sorting, Cleaning, and Scouring Wools; the English and French
methods of Combing, Drawing, and Spinning Worsteds and Manufacturing
Carded Yarns. Translated from the French of Charles LEROUX, Me
chanical Engineer and Superintendent of a Spinning Mill, by IIORATIO
Paine, M. D., and A. A. FESQUET, Chemist and Engineer. Illustrated by
twelve large Plates. To which is added an Appendix, containing extracts
from the Reports of the International Jury, and of the Artisans selected
by the Committee appointed by the Council of the Society of Arts, Lon-
don, on Woollen and Worsted Machinery and Fabrics, as exhibited in the
Paris Universal Exposition, 1867. 8vo. Muslin

$5 09 Contents.- INTRODUCTION.-General glance at the Art of Spinning Wool; Machines used for Combed Wool (Worsted) and Combed Carded Wool.

Part I.-PRACTICAL MECHANICS APPLIED TO SPINNING. CHAPTER I.--Choice of a Motive Power; Arrangement of the Work Rooms; Arrangement of Machines. II. TRANSMISSION.-Driving Shafts; Table showing the Diameters of Bearings (Journals) for shafts submitted to torsional strain; Rule. III. Belts.—Means for Determining the Dimensions of Belts; Thicknesses of Belts, Calculated from the Power they have to Transmit; Rule; Table for ascertaining the width of Belts; Rule; Coefficient of Trans. formation of the Width of Belts according to the Relations of the Diameters of Pulleys; Loss of Velocity suffered by Belts while in Motion; Table showing the Slip of Leather Belts relatively to their Lengths; Rule; Causes of the Destruction of Belts and Means of Remedying it; New Methods of Sewing the Couplings of Belts. IV. PULLEYS.Shape of the Pulleys; Measure of Velocity; Calculation of Velocity. V. GEARING.Rules. VI. Of Friction.-Alloy for Journal Boxes of Transmitting Shafts ; Alloy for the Brasses of Drawing and Spring Frames; Alloy for Steps, Collars, &c.; Table showing the Ratio of Friction to Pressure for Axles inoving in Journal Boxes; Rule ; Nature of Lubricating Substances. VII. THE MOTIVE POWER. VIII. LEVERS. Rules; Table of Numbers, showing their Squares and Square Roots, Cubes and Cube Roots; and also Circumferences and Areas of Ciroles of the same Numbers considered as Diameters.

Part II.--CHAPTER I. MANUFACTURE.-Table of Textile Materials. II. Sorting the Wool; Of Wool Bearing Animals; Improvement of Sheep; Varieties of Breeds ; Character of Wool from different sources; Cleanness, Quality; Sorting or Separation into Qualities; Low Qualities; High Qualities; Cost and Loss in Sorting; Product in the Sorting of Wools from the Principal Sources ; Comparison of Wools of Different Sources, with their Diameter and the corresponding Number of Yarns. III, BEATING. ----Cost of Beating; Waste in Wools from Different sources. IV. Cleaning the Wool of its Impurities; French Wools; Algerino Wools; Classification of Wools according to their Cleanliness; Different Combinations necessary for Cleansing Wool; Adjust. ments; Table of Intervals corresponding to the various Qualities of Wool; Method of Operating: V. Washing. — Natural Grease ; Marseilles Washing; Washing in the North of France; Analysis and Theory of Washing; Fatty matter contained in Wool; The Operation of Washing and Scouring; Another Method of Washing; Press Washing; The Operation ; Washing in a Current of Warm Water; Method of Operating; Washing by a Current of Cold Water. VI. SCOURING.–Chemical Agents used for Scouring; Water-Inconvenience of Calcareous Waters-Means of Neutralizing them; Solution of Soap; Method of Scouring and Manipulation ; Temperature of the Bath--Amount of Soap to be employed for each Quality of Wool; Table of the Proportion of Soap to be used in Scouring, and the Elevation of Tempernture for Different Qualities of Wool; Yarn Scouring; Mode of Operation ; Table showing the Quantities of Soap and the Elevation of Temperature for scouring various qualities of Worsteds and Yarns; Rinsing; Wringing; Mode of Operating; Uses for Old Baths; Wool Picking; Drying. VII. OILING.—Disadvantages of not Oiling; Experiment upon the relative advantages of Oiling and not Oiling: First Experiment; Second Experiment; Oils to be employed; Properties and Specific Gravities of Oils; Composition for Oiling Wools; Table showing

the Quantities of Composition to be used according to the Qualities of Wool: Method of Oiling by Iland; Oiling by Machinery. VIII. MECHANICAL ARRANGEMENT OF A SET OF CARDS (BREAKERS). - Table ghoiring the Velocities and the Diameters of the various parts of Breakers. IX. CARD CLOTHING.-Arrangement of the Rollers; Mode of Employing the Screw Slide Rest; Mode of applying the Caril Sheets to the Main Cylinder; Method of applying Card Fillets to the Workers, Strippers, &c.; Rule; The Relation of Card Clothing to the Qualities of Wool; Table giving the Number of the Card Clothing corresponding to the various Qualities of Wool. X. GRINDING THE Canos. XI. FłOCKING THE CARDS.--Price List of Card Clothing alrealy stuffed and made by Messrs. Scrise Brothers, Lillé. XII. CARDING.-Intervals between the Rollera, care to be obserred in their adjustment; Method of adjusting the intervals for different Qualities of Wool; Table giving the intervals between the Card Rollers according to the various Qualities of Wool and the length of the Staple; Knots, Methool of Pre venting and Removing them ; The Operation of Carding; Quantity of Wool Carded in Twelve Hours by a set of Two Breakers. XIII. THE Gius Box. XIV. STRIPPING THE CARDS. XV. SCOURING AND DRESSING THE SLIVERS. XVI. Hand Combing; Machine Combing. XVII. PREPARATION OF WOOL.FOR FRENCH SPINNINO.-General Arrangement; Levers as applied to Preparatory Machines; Tablo showing the Weights and Arms of Lever which are in Equilibrium with a given Power; Table of the Pres. sures to be applied to the various Qualities of Wool on the Drawing Frame; Weighted Top Rollers; Caps or Top Clearers; Oiling the Machinery; Interrals; Rule; Table showing the Intervals in Preparatory Machines, according to the Quality of the Wool and the Length the Staple; Parehments; Circular Combs (Porcupines); Table indi. cating the Diameter, Length, and Number of Pins in one Row, for Combs employed in Drawing Frames, and for the Number of Yarn to be produced; Movement of the Combs; Position of the Comhs; Rotary Rubbers; Spool Drums; Hard Spools. FIRST PASSAGE. _First Drawing Frame : First Mounting; Second Mounting; Mode of Operation of the First Drawing Frame; Draughts and their Calculation ; Analysis of the Draught on the First Drawing Frame; Rule; Calculation of the First Draught; Calculation of the Second Draucht; Rule; Numbering of the Preparations; Rules; Table showing the Numbers of Preparations with the corresponding Weights; Rule; Result of the First Passage; Rule.. SECOND Passage.-Second Drawing Frame; First Hend; Second Head; Third Ilead; Fourth Head. Third PASSAGE.—Third Drawing Frame; Steam as applied in the Drawing Process. Fourte PASSAGE.--Fourth Drawing Framo; Cut. tings; Barbs (Roller Waste); Piecing or Splicing; Waste. FIFTI Passage.-Fifth Drawing Frame. Sixth Passage.--Sixth Drawing Frame. SEVENTH PASSAGE.Seventh Drawing Frame. Eight PASSAGE.- Eighth Drawing Frame; Doubling; Table showing the number of Slivers employed upon each Drawing Frame, the numbers of the drawn out Slivers, and the corresponding Draughts; Table of the Slivers or Rorings of Preparation with the corresponding Numbers of l'arn. XVII. FREYCHL SPINNING ON THE MULE.-Spinning Mule; Pressures given by the Top Rollers : Spindles ; Carriage; Cuttings; Barbs (Waste); Spindle Cords or Bands; Breaks and Lash. ing (Running in); Winding up; Intervals; Draughts; Rale; Regulating the Number of the Yarn; Rule; Table showing the Number of Teeth of Change Pinions, for Numbers of Yarns between 10 and 90 ; Twisting; Rule; Table showing the Numbers of Yarn with the Degree of Torsion ; Operation of Spinning; Cleaning; Sampling or Proving; Table showing the Numbers of Yarn with the corresponding Lengths and Weights; Table giving the Numbers of Yarn with their

Weights, and the corresponding Slivers ; Société Impériale d'Emulation d’Abbeville. Report of Vice-President on the Quadrate Scale of Charles Leroux. Part III.--CHAPTER I. The English Meriod of Srinning.–The Drawing Pro.

First Passage.—Sampling (Proring) the Preparations; Table showing the Weights of Slivers corresponding to the Numbers to be Spun ; Weighing of the Prepa. rations. Second PASSAGE. Third PASSAGE. FOURTH PASSAGE. Fift PASSAGE. Sixtu PASSAGE.--Rule. II. ENGLISH METHOD OF SPINNING CONTINUED.- Arrangement of the Spinning Frame (Throstle); Intervals; Top Rollers; Tensions; Twisting; Draughts; Rule; Cleaning and Oiling the Machine. III. FRENCH SPINNING ON THE Torosile. Preparations for the Throstle Frame; Spinning Framo (Throstle); Comparison of the System of Spinning; Doubling (Twining); Doubling on the Mule (Twining, Doubling Mule); Doubling on the Throstle Frame; Winding; Twisting the Hanks; Packing; Baling.

Part IV. - CHAPTER I. CARDED Wool.-Glance at this kind of Manufacture ; Preparations of Wools-- How they are Used and Sorted ; Seouring; End Twistings; Rag Pickur; Beating; Cleaning; Diling; Trble showing the Quantity of " Composition to be used for a certain Quantity and Quality of Wool; Picker. II. CARDING.–First Pussage ; Second Passnge (Condensing). III. SPINNING.—Sampling and Numbering; Rules; Throstle Frame; Rules; Lighting the Spioning Mill,


APPENDIX. - WOOLLEN MacuSERY AND MANUFACTURES AS SNOWY IN THE UNIVERSAL EXPOSITION, PARIS, 1867. (Extracts from the Reports of the International Jury); From MM. Michel Alean and Ed. Simons' Report-- Processes for Cleansing Wool; Combed Wool; Cardeal Wool; From M. Larsonnier's Report - Productions Exhibited. MACHINERY FOR WORSTED FABRICS, ETC, BY JOHN FRENCH, Bradford. (Extract from the Reports of Artisans selected by the Committee appointed by the Council of the Society of Arts to visit the Paris Universal Exhibition, 1867); Class 55. Belgium ; Mannfacturing Machines in the French Department; France Classes 55 and 56 ; Machinery from Roubaix ; Visit to Rheims; TABLES SHOWING THE RELATIVE VALUE OF FRENCH AND ENGLISH WEIGHTS AND MEASURES. INDEX.

Leslie (Miss).—Complete Cookery:

Directions for Cookery in its Various Branches. By Miss LESLIE. 60th thousand. Thoroughly revised, with the addition of New Receipts. In one volume 12mo., cloth

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Leslie (Miss).- Ladies' House Book:

A Manual of Domestic Econoury. 20th revised edition. 12mo., cloth

$1 25

Leslie (Miss).-Two Thundred Receipts in

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Lieber.- Assayer's Guide:

Or, Practical Directions to Assayers, Miners, and Smelters, for the Tests and Assays, by Heat and by Wet Processes, for the Ores of all the principal Metals, of Gold and Silver Coins and Alloys, and of Coal, etc. By Oscar M. LIEBER. 12m0., cloth CONTENTS.-Explanation of Technical and Scientific Terms; Introduction ; Descrip. tion of Iinplements and Utensils used; Assay of Silver Ores by Heat; Cupellation ; a Table to rectify the Loss in the Silver Assay; Gay-Lussie's Process of Silver Alloys; Assays of Gold by Heat, by Quartation, by Amalgamation, by Washing, hy a Wet Process; Assay of Silver Coins, or Alloys of Silver and Copper; Assay of Gold Coins, or Alloys of Gold, Silver, and Copper; to find the Proportion of Gold in a Mixture of Gold and Quartz hy Calculation; Assay of Platinum Ores; Assay of Copper Ores by the German or Hungarian Method; Assay of Copper Ores by the English Method; Assays of Lead Ores by Heat and by a Wet Process: Assay of Iron Ores by Heat; Tack's Process for Iron Ores and Iron; Assays of Ores of Mercury; Assay of Sulphurets in Ores; Mode of Testing the Calorific Power of Coal and other Fuels; Tables. Love.-The Art of Dyeing, Cleaning,

Scouring, and Finishing, on the Most

Approved English and French Methods: Being Practical Instructions in Dyeing Silks, Woollens, and Cottons, Feathers, Chips, Straw, etc. Scouring and Cleaning Bed and Window Curtains, Carpets, Rugs, etc. French and English Cleaning, aby Color or Fabric of Silk, Satin, or Damask. By Thomas LOVE, a Working Dyer and Scourer. Second American Edition, to which are added General In. structions for the Use of Aniline Colors. In one volume 8vo. 343 pages.

$5 00

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CONTENTS. DESCRIPTION of the Dye-llocse.-The dye-house; coppers, tubs, vais, and cisterns, called dyer's plant.

Chapter. I. The art of cleaning and dyeing silk. II. The art of dyeing and scour. ing wool. III. The art of dyeing and scouring cotton. IV. The art of cleining anii dyeing feathers, chip, straw, and Leghorn bonnets. V. The art of cleaning and scouring silk, woollen, and cotton fabrics; French cleaning ; different soaps used by dyers and scourers.

APPENDIX.-General instructions for the use of aniline colors. General rules ; rosani. line, solferino, or nagenta crystals; cerise ; sienna brown; blues soluble in alcohol; blues soluble in water; violets soluble in alcohol, violets soluble in water; iodine violets soluble in alcohol- Alexandra red and blue and Hofmann's violet; iodine violets soluble in water- Alexandra red and blue and Hofinann's violet; aniline groen in paste or powder; prepared aniline green--silk, wool, and cotton; aniline black for print. ing and dyeing cotton ; yellow and orange : green with picric acid and indigo carmine. Main and Brown.- Questions on Subjects

Connected with the Marine Steam-En-
And Examination Papers; with Hints for their Solution. By Tuomas J.
Main, Professor of Mathematics, Royal Naval College, and THOMAS
Brown, Chief Engineer, R. N. 12mo., cloth

$1 50 Main and Brown. --The Indicator and

Dynamometer: With their Practical Applications to the Steam-Engine. By Thomas J. Marx, M. A. F. R., Ass't Prof. Royal Naval College, Portsmouth, and Thomas Brown, Assoc. Inst. C. E., Chief Engineer R. N., attached to the R. N. College, Illustrated. From the Fourth London Edition. 8vo. $150 COSTENTS -THE INDICATOR. -The Indicator scale : To graduate the Indicator scale ; When the atmospheric line is to be traced ; The use of the small hole in the side of the stop-enck; Method of taking a diagram ; It is important to have means of short. ening or lengthening the string attached to the Indicator ; The pressure of the steam and the state of the vacuum on the diagram do not correspond with the boiler pressure and condenser vacuum ; The part of the engine to which the string should be attached ; On the general configuration of the diagram under given circumstances : The above curves exhibit what lias been going on within the engine; the slide diagram ; To re. duce the motion of the slide when too great; To explain how an alteration in the length of the gab-lever affects the diagrams; To explain why the accompanying diagrain has a different outline from the standard diagram ; Top and botton diagrams with the slide-rod lengthened ; To find the nature of the curve, if the slide-rod be shortened; Top and bottom dingrams with the slide-rod shortened ; The efi act on the diagrams, if the stop on the eccentric be too far advanced ; Top and bottom diagrams with the eccentric stop advanced ; To ascertain, by inspecting the diagram, if the stop on the shaft be not snf. Heiently advanced ; Top and bottom diagrams with stop of eccentric put back; Slide diagranis with eccentrie stop' wrongly placed; The nature of the diagram when the port ways of the cylinder or the steam pipe are too small for the size of the cylinder and the speed of the piston ; Diagram obtained when the steam is throttled ; On the force of the diagram when the expansive gear alone is used; Top and bottom diagrams when working expansively; Toshow the advantage of expansive working over throttling; The general outline of the diagram may appear satisfactory, yotwithstanding the engine is not in good working order; On the series of steps in the upper right-hand corner of the accompanying diagram ; To explain why, in certain cases, the steam-line (when the expansive gear is used) does not descend so rapidiy as in the theoretical case ; To ascertain the horse power of an engine by means of the Indicator ; Where accuracy is required a dit. gram should be taken from the top and bottom of the cylindor; A dingram representing the relative motions of the slide and piston at every part of the stroke ; To find, separate. ly, the value to be given to the steain and vacuum pressures; To estimate the work done in a single stroke of the engine ; Method of employing the Indicator for ascertaining the quantity of water evaporated by a boiler ; 'To ascertain the friction of the steama

engine when working without any load ; The diagram does not necessarily return into itself, and form a closed figure ; To explain why the first diagram is rounded at the upper left-hand corner; Indicator diagram taken when the engine is worked without condensation of the steam ; High pressure diagram ; Diagram obtained when there was no load on the safety valve; Air-pump diagram.

THE DYNAMOMETER.—Method of obtaining the effective horse power of an engine by the Dynamometer ; Pressure of steam and the corresponding temperature and relative volume; Areas of circles of given diameters.


Main and Brown.-The Marine Steam

Engine. By Thomas J. Mann, F. R. Ass't S. Mathematical Professor at the Roral Naval College, Portsmouth, and Thomas Browx, Assoc. Inst. C. E, Chief Engineer R. N. Attached to the Royal Naval College. Authors of “Questions connected with the Marine Steam-Engine," and the " Indicator and Dynamometer.” With numerous illustrations. In one volume, Evo.

$5.00 " The Text-Book of the United States Naval Academy. CONTENTS.-INTRODUCTORY CHAPTER.-Steam. Water. Caloric. Temperature. Heat and cold. General effects of heat and cold. Expansion by beat. Expansion of gases. Practical methods of observing expansion. Various applications of this prin. ciple. Law of expansion by heat not universal. Beneficial result arising from this anomaly. To show that the law fails in the foregoing case. To ascertain the temperature of any substance. Pyrometer. Thermometer. Method of graduating thermome.

To compare thermometers when differently graduated. Laws of cooling. Con. duction. Conducting powers of bodies. The sensations a bad criterion of temperature, Convection. Advantages to be derived from a knowledge of this law. Explanation of some natural phenomena. Radiation. Radiating power of bodies- what it depends on. Land and sea breezes. Capacity for heat. Unit of caloric. Latent heat. Under what circumstances heat becomes latent. Ileat the sole agent in melting and raporizing bodies. Calorimeter. Sources of Heat. Pleat generated by mechanical operations. Combustion. Temperature necessary for combustion. Oxidation. Efects of galvanic action. Boiling point. Boiling point as influenced by pressure. Temperature of steam. Vapor. Formation of dew. Causes influencing the formation of dew. Vapor and steam distinguished. Method of obtaining steai. Steam distinguished from other elastic fluids. Boiling point of fresh water. Boiling point of salt water. The steam of salt water is fresh. Process of Distillation. Iligh-pressure steam. Measure of steam by atmospheres. Laws regulating the pressure of steam. Pressure, density, and tem, perature of steam. Specific gravity of steam. Common steam. Superheated steam. Analysis of sen-water. Saline contents of sea-water. Gaseous matter in sea-water.

Cuapter 11.-Tae Borter :- Marine boilers distinguished from land-boilers. Gear connected with boilers. The tubular boiler. The number of boilers in each steamvessel. The steam-chest. The fire-bridge. Ash-pits. Gun-boat boilers. Exhaust pipe. Blast-pipe. Feed or donkey engine. Boiler hand.pumps. The safety-valve. Gearattachel to the safety-valve. Under what circumstances the weights of the safety-valves may be increased. The safety valve box. Waste-steam funnel and drip-pipe. Steam-gauge. Steam-gauge for high-pressure boilers. Gauge-cocks. Boiler Water-gauge. Kinga ton's valves. Wash-plates or dush-plates. Dampers. The reverse-valve. Communi. cation or stop valve. Blow-out cocks. Brine-pumps, brine-valves, and refrigerators. Surface blow-out pipes. Seaward's brine-valve. Brine and feed valves, as fitted at the factory, Portsmouth Dockyard.

Chapter III. –The Engine : -Definition of stenm-engine. Employment of the several methods. Engine in general use previous to Watt's iinprovement. Newcomen's engine. Discoveries of Watt. Blowing-through. Single-acting engine Double-acting engine. High-pressure or non-condensing engine. Marine stean-engine. Side-lever marine engine. Blow-valve. Stuffing-boxes, etc. Piston of steam-cylinder. Work. ing parts of side-lever engines. Method of working slides. Strap, gib, and cutter. Escape-valves of cylinder. Parallel motion. Surface condensation. Test-cocks. Foot-valve not absolutely necessary. Annular air-pump bucket. Angular delivery. ralre. Air-pump and common pump contrasted. Delivery-valre not always needed. Louvie-acting air-pamp. Discharge or sluice ralve. Various kinds of slides. Long

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