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WITH THE AUXILIARY MAKERS | Hynd Automatic Safety Engine Lock One of the most interesting exhibits in the marine appliance: room at the Lake Carriers' Association was a full- sized model of an automatic safety engine lock, invented by Alexander Hynd. The purpose of the lock is to automatically prevent: any misunder- standing of signals by locking the op- erating lever against any movement except the one indicated by the signal. The device is a lock mounted on the bracket carrying the operating levers, which is electrically operated and is connected with suitable contact plates on the receiving dial of the engine telegraph. The lock has two locking bars, one for the ahead and one for the astern position, which are oper- ated in accordance with the motion of the pointer on the telegraph dial, so that if an ahead signal is given, the lock prevents the lever being moved into the astern position, and if an astern signal is given, the opposite lock comes in action to prevent the lever being moved into the ahead position. The operator cannot make a mistake in complying with the sig- nal. ; If, to get the engine started, it is necessary for the operator to move the lever contrary to the signal given the lock may be opened by means of a small lever, allowing the lever to pass, but immediately returning to locked position when released, and as the lever is brought back to position to comply with the signal it will trip the lock, which, when the lever has passed, again returns to locked posi- tion, and will not leave this position until an opposite signal has been giv- en and the opposite lock has come into action. A bell is attached to the lock or otherwise conveniently located, so that in case of the above operation, when the lever is in position contrary to the signal, an alarm will at once be sounded and _ will continue to sound while the lever remains in this position. Further particulars may be obtained from Mr. Hynd, 872 Rocke- feller building, Cleveland. The McNab Specialties Alexander McNab, the _ inventor of a number of engineering specialties of value, which are manufactured by the McNab Co., of Bridgeport, Conn., attended the annual meeting of the Lake Carriers' Association, in Detroit, and displayed a number of models, including the Cascade boiler circulator, the McNab draught gage, the McNab engine indicator and the Willet-Bruce system of steamship whistle control. During the convention, Mr. McNab took orders to equip the following lake steamers with the Cascade boiler circulator: The Harvester, Lacka- wanna, Clifford Moll, Leonard BB. Miller, W. S. Mack, Moses Taylor, E. W. Oglebay and the new boat build- ing for Capt. W. C.: Richardson." Two vessels, belonging to the Vance & Joys fleet, the new Hanna steamer and the new Richardson steamer, will be equipped with the McNab engine indi- cator. and the new conveyor steamer building for the Wyandotte Trans- portation Co. will have the McNab draught gage, which shows the draught forward, amidships and aft. The Mc- Nab specialties are handled on the lakes by Alexander Hynd, 872-874 Rockefeller building, Cleveland. Jacques-Huft Davit Winch A demonstration of a Jacques-Huff davit winch and releasing hook was given on the steamer Pleasure, at De- troit, on Nov. 1, in the presence of the inspectors of steam vessels and various vessel owners. This device has been installed on the lake pas- senger steamers Essex and _ South American, the bulk freighter Dunham and the Michigan Alkali Co.'s steamer. A model of the winch was on exhibi- tion at the convention of the Lake Carriers' Association, in Detroit, Jan. 22 and 23, and attracted much atten- tion. The device is all steel and is easily adjusted to any davit while the boat is in service. The device can be operated by one man at each davit and one man has full control while it is being lowered to the water with a load of passengers. A test proved that 9 lbs. 15 oz. on the controller held the weight of 2,100 Ibs. Full particulars will be sent to anyone in- terested by the Jacques-Huff Co., 329 Belvidere avenue, Detroit. McArthur Portable Ladder The McArthur portable ladder, which is meeting with general favor for use aboard ships, was displayed in the marine appliance room at Hotel Cadil- lac, Detroit, during the convention of the Lake Carriers' Association, by Capt. Charles A. Anderson. Consid- erable improvement has been made in this ladder during the past year, and being a combination of the strong- est metals, its life is practically in- definite. An individual metallic case is provided for the ladder when not in use. Capt. Anderson is a born saleés- man and his natural persuasiveness kept a crowd about the exhibit all the time. No one can beat a sailor sell- ing to a Sailor, The Brude Life Boat One of the most interesting exhibi- tions at the annual convention of the Lake. Carriers'. Association was <a model of the Brude life boat, atten- tion to which has been drawn in THE MarinE Review hitherto. The model, which occupied a rather important position in the lobby of the Cadillac, was continually surrounded by vessel masters who were quick to see its merits. This boat has proved its sea- worthiness and general efficiency in sailing across the Atlantic from Nor- way to this country in mid-winter. The Brude life boat is a closed boat and therefore protects from exposure all rescued people. There is no doubt whatever that in the November storm on the lakes the Brude boat would have got ashore safely. It is pro- posed to sail one of the Brude boats from New York to Paris in February of the present year to again dem- onstrate its seagoing qualities. The agent for the -great. lakes is Capt. 3B. T. Haagenson, and one of the Brude boats is installed on the car ferry Ashtabula. The merits of the Brude boat have been presented to the Brit- ish board of trade and to congress, and there is a great deal to be said in its favor. It certainly has unde- niable advantages over the open type of boat. - A Shaking Grate for Marine Boilers The tremendous waste of heat re- sulting from the usual method of cleaning fires in marine boilers by use of the slice bar and hoe through open furnace doors has long been a matter of serious concern to marine engi- neers. The condition has been en- dured, however, because it has been generally considered impractical to adapt the usual forms of shaking grates and mechanical stokers to the cramped space available on shipboard. Recently a shaking grate specially de- signed for installation in Morison fur-