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PIPE THREADING STOCK—ADJUSTABLE FROM 1 TO 2-INCH PIPE new workholder is set to size nothing but a straight thread can be cut, but it may be quickly and easily adjusted to cut crooked or drip threads if desired. It will also grip any size couplings for threading short nipples. Because of the fact that the parts are interchangeable there is no pos- sibility of ordering or buying the wrong part; in fact, repair parts are guarenteed to fit. Loose bushings have been eliminated in this new stock. Material has been selected from the standpoint of particular fitness to perform its work most efficiently and exactly. It is said that by using this new stock the operation of cutting a thread is completed in the time re- quired for getting ready for the work when the old type, with loose dies and bushings, is used. Instead of being put to the trouble of hunting for dies and bushings that have be- come lost or mislaid, and of wasting more time in changing dies when a different size thread is desired, it is necessary merely to shift the dial plate to the correct graduation mark and cut the thread. Sander Finishes Wood or Metal All ships have larger or smaller areas of wooden decks. On passenger vessels wooden decks are likely to be extensive. In the building and also in the operation of the ship, some mechanical means for making such decks smooth and for resurfacing them is necessary to save time and labor. A sanding. machine particu- larly suitable for this purpose has Large 50 recently been developed by the Porter- Cable Machine Co., Syracuse, N. Y. This is a heavy duty, hand belt sur- facing machine for wood or metal as shown in the accompanying illustra- tion. It was developed because the smaller model was not a production machine and because the trade demanded a heavy-duty type. It is equipped with a new type, compound-wound air- NEW HAND BELT SURFACING MACHINE cooled motor that shows little tem- perature rise after continuous use. The 1 horsepower is abundant to drive the 4-inch belt at the rapid rate of 2000 feet per minute. The motor is of the universal type and may be operated on direct current, or alternating current from 25 to 60 cycles. Power is transmitted to the rear pulley by a worm and gear which are totally enclosed. Belts can be changed in a fraction of a min- ute and are furnished for cutting wood or metal. They come all made up ready to be slipped over the pul- leys. Tension is automatically main- tained correct. It weighs 22 pounds. MARINE REVIEW—June, 1928 Food Mixer for Galley Use In order that a ship’s galley equip- ment may be complete, some means for rapid food mixing should be in- cluded. Especially is this true of passenger vessels. A mixer adapted for use in the galley on board ship as shown in the accompanying illus- tration has been developed by the Reynolds Electric Co., Chicago, Ill. This machine is equipped with a 12- quart bowl, designed to set on a table or bench. It stands 30 inches high and occupies a space 12 inches square. There are two speeds: the slow speed for a stirring action, the faster speed for a whipping action. It will mix salads and jellies, mas h_ potatoes and vegetables, make salid dress- ing, whip eggs or cream, or per- form any opera- tion requiring a stirring or beat- ing action. This new mixer is sim- ple and rugged in design. The 12- quart bowl is 10% inches in di- ameter and 9% inches high. At- tachments are provided for a great variety of purposes, including meat and food grinder, crumber, ice cream freezer, coffee mill and many others which are used in the routine of the ship’s galley. The mixer is powered by a reliable 1/6 horsepower motor which may be connected to a light socket or to any other outlet. Electric FOOD MIXER Convection Increased by Oval Tube Radiation A new radiator has recently been developed, the unique design and di- mensions of which appear to make it of particular interest to ship builders. This radiator is known as Shaw- Perkins high convection radiator and represents a new model in the stand- ard oval tube radiation such as the company has manufactured for some years for various heat exchanging purposes. The new model radiator is made throughout of Armco ingot iron. The radiator utilizes sound principles of pipe coil design. It is light in weight, compact, sanitary and heats or cools quickly. The standard oval __ tube, which is incorporated in this radia- tor, is arranged horizontally in two vertical rows and connected at both ends into vertical headers. All joints