Abstract: Disclosed is an improved core drill and a method of detachably coupling the same to a power driving unit to expedite the removal of a core therefrom. This is achieved by equipping the rear end of the drill stem with a fixedly attached externally threaded bushing. A coupling sleeve has internal threads at either end matable respectively with the bushing threads and the threaded drive shank of a power driving unit. This sleeve and the core drill are readily detached as a unit from the power drive thereby permitting the rapid removal of the core from the rear end of the drill rather than past the cutting ring at its front end.

Abstract: Disclosed is a pneumatically powered automatic apparatus and method for subdividing one or more loaves of dough supported in a partitioned single use, nonmetallic tray at a processing station intermediate the opposite ends of a conveyor. A tray of dough is introduced into the apparatus as a tray of subdivided dough exits onto the conveyor. The dough divider functions to draw the skin of the roll of dough from the upper and lower sides thereof permanently into closely spaced relation between adjacent subdivisions of dough thereby leaving the subdivisions connected solely by a web which is readily frangible when the dough is baked. The dough subdivider operates dry and free of lubricant. Trays of dough exiting from the apparatus are maintained frozen and wrapped until ready for the oven at either a local or a distant consumption site.

Abstract: Disclosed is a heat insulating module and a method of making the same for use in lining a high temperature chamber. The module has a main body formed of layers of refractory fibers positioned side by side and impaled on at least one rigid tie member spaced inwardly of one lateral edge of all layers with the ends of the tie member secured to one leg of L-shaped mounting members with the other legs thereof extending outwardly beynd the end layers of the module and coplanar with the adjacent lateral edge of said layers. The layers may be interconnected by folding a unitary blanket of fibers and, in either assembly mode, the layers are held snugly compressed by at least one encircling tie band.

Abstract: Caliper with a pistol grip and a simple two-piece clamp for releasably securing a dovetail-equipped dial indicator thereto. The caliper fingers are stabilized and strengthened along their midlength by bracket plates fixed to the sides of one finger and embracing the sides of the other finger.

Abstract: A self-stabilizing intra-oral saliva evacuator insertable astride the mandibular and maxillary arches to hold the oral cavity open and to maintain the upper and lower molars dry and isolated from contact with the lingual and buccal tissues so long as the evacuator is in place. The semi resilient tempered main body is supported solely by the teeth and a major portion thereof is embraced by flexible tubing connected to evacuating facilities and is provided with strategically located orifices to remove saliva and maintain a particularly copious flow of ambient drying air over the adjacent dental surfaces. The two-part main body, though a permanent assembly, can be readily adjusted to accommodate a range of different oral cavity configurations.

Abstract: A motor coach the major portion of the interior which comprises businessman's conference and sales promotion room occupying the rear end of the coach and much of its length and the remainder of which includes living facilities for the driver. The rear end of the coach comprises transparent panels one of which slides to provide an entrance. A protective device covers the exterior of these panels when the display room is not in use and shifts to a horizontal position at other times to provide an access for the entrance.

Abstract: A conductor stringing block adapted to be threaded with a hauling line dropped by helicopter and having a suspension yoke connected at its ends to the opposite sides of the block frame. The yoke includes a threading passage which is normally closed by a latch effective to transmit load forces crosswire of the passage. The upper end of the threading passage is equipped with an outwardly and upwardly inclined extension to receive and feed a helicopter-dispensed hauling line into the passage. Upright extensions projecting downwardly from the lower end of the passage flex to pass a power line running board and guide the hauling line as it drops from the threading passage onto an underlying sheave of the stringing block. The yoke assembly is securable crosswise of the upper end of a conventional stringing block in lieu of the conventional suspension yoke thereby converting the conventional block to use with helicopter threading equipment.