The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

7 HM es STINT HE Diamond Power Specialty Co., Detroit, has just published, under the title of “Increasing Today’s Profits”, an interesting study of waste and conservation in the use of fuel. The booklet is one of a series which, in addition to discussing fuel problems, de- scribes the soot blowers manufactured by the Diamond company. This latest bulletin points out that power is one of the largest items of expense in most manufacturing busi- nesses and that the cost of fuel rep- resents, on an average, 70 per cent of the cost of power. With the cost of fuel rising, the problem of using the fuel most efficiently is constantly assum- ing greater importance. Of all sources of preventable waste, that of the forma- tion of soot on the fire surfaces of the boiler is probably the most troublesome. The bulletin describes interestingly the characteristics of soot, its nature, and the limitations of hand cleaning. The following five essentials in preventing soot waste are pointed out: ° Frequency of cleaning; thoroughness of cleaning; ‘availability of the*cleaning system; dur- ‘ability of the a and. the economy of operation. ' The bulletin then’ describes a ferro- aluminum material Which was developed by the General Electric Co. The Dia- mond Power Specialty Co. has the. sole right as lessee to the use of this ma- terial in manufacturing soot blowers and other power plant equipment. This material is said to be of great hardness and to have heat-resisting qualities 50 per cent in excess of iron and steel. The results of tests made on boilers equipped with the company’s soot blow- ers are presented in detail. The bulletin contains a list of users of the com- pany’s products, together with photo- graphs of plants in which these soot blowers are used. - Marine Glue A booklet. dealing with some essen- tial features‘ of the ‘Marine «glue prob- ‘lem has been issued by L. W. Ferd- ‘inand & Co. Boston. Several dif- ferent kinds of. glue are described, each kind -having its individual pur- pose. ‘Marine glue, i is used extensiy ly in backing armor plate, waterprgof- ing packing cases and tanks, covering ‘boats and decks with canvas, coating ‘the exterior of battery boxes, for deck and hull seams, etc. Waterproof liquid ‘vessel, . Pertinent Suggestions and Personal Gossip ay 2g glue is eh ‘manufactured by the com- pany. The ‘proper method of applying is carefully ‘Getailed and methods for meeting various emergéncies are sug- gested. Winton Gas Engines The Winton Engine Works, Cleve- land, announces that orders placed up to date exceed 30,000 brake-horsepower in the aggregate. These engines are manufactured in a range of sizes from 125-horsepower to 700-horsepower. Six cylinders: are used for the smaller sizes, eight for the larger. The com- pany is specializing on large heavy- duty engines for cargo vessels up to 4000 tons deadweight capacity. For a ship of this size two 700-horsepower, 8-cylinder engines connected to twin screws are recommended. These en- gines have cylinders 12-5/16 inches in diameter by 18 inches stroke. They are of the pure diesel 4-cycle type: The 8-cylinder engine mentioned above weighs 32 tons. The engines are com- pletely enclosed. Throughout the vari- ous stages of their manufacture the point of view and ideals of the builder of fine automobile motors have been maintained. This tends to produce a smooth operating, lasting mechan- ism. : Specializing in Screw Propeller Designs When one considers the numerous branches of engineering that enter into the construction of any modern it seems only plausible that no one engineer or staff of engineers can style themselves as experts in regard to every branch. It would, therefore, appear to be rational that companies or individuals designing modern vessels, should secure where- ever possible, the advice and assist- ance of experts who have made a life-long study of one problem in marine engineering. For instance, it is rarely found that an individual who is an expert on steam turbines, - is also an authority on naval architec- ture, but let us take for granted that ‘the individual is quite’ an authority on these two subjects; is it not only natural that he has mastered one of them more completely than the other? Therefore, he would in all probability 81 gprs eon ak be teens annnaeenes cosa ¢reecgnsEROvSeT¢ VO CCEETEET EET eOREETL C561 050 C04 VUSMUSERETEES TE EE OEERES OSES CS SSTE DEN ECT ESEREAES ELEC EE i be widely cacoenined as an expert upon this one subject, rather than upon the other. Such is the case of the American Screw Propeller Co., Philadelphia. The experts attached to this concern have made a specialty of one vitally important element in marine engi- neering—the screw propeller and the estimation of power for propulsion of ships. They have aimed to master this subject completely; it is their daily occupation and study. Further- more, they are fortunate in being able to number among their members recognized authorities on this sub- ject. It was only after considerable close study and experimenting, that the company attained the position | of being able to offer its services to the engineering world, as a modern authority on the screw propeller. The American Screw Propeller Co. was formed one year ago, at the sug- gestion of several prominent Amer- ican marine engineers and naval archi- tects. Since its formation it has in- cluded among its clients a majority of the large ship yards, as well as many © prominent engineers and navaf archi- tects throughout the country. This company also has designed propellers for approximately 150 vessels, a ma- jority of which have been large steel passenger, cargo and tank ships. Pointers on Paint The United States Graphite Co., Saginaw, Mich., is distributing an in- teresting booklet on “Graphite Paint.” After pointing out the economies ef- fected by painting in time, that is, be- fore rust or decay has set in, the book- let discusses the necessity of using paint that is durable. under both natural and artificial exposure, such as wind, rain or sun and smoke, fumes, gases or ex- treme temperatures. An efficient paint also will resist destructive agents, whether mechanical or chemical. The © United States company employs amor- phous graphite from its mines in Mexico. This pigment is highly refrac- tory and, when pure, impervious to any exposure. In the booklet the company points out that its paint has a high covering power, that is, the ability to spread a thin but efficient coating over a large area. The company states that one gallon of its paint will effectively coat 1,000 square feet of smooth metal.