Abstract: A module frame work to which outfits are mounted is manufactured with high accuracy and is installed to a larger structure without adjustment operation. The module frame work comprises a pair of horizontal and mutually parallel main beams, a pair of beam members connecting the main beams, support columns vertically extending from each of junctions of the main beams with the beam members and at least a connector on an end of any of the main beams, beam members and support columns.

Abstract: A split ring arm band is provided that is both easy to put on and maintains good resiliency. The arm band includes a split ring band having interior and exterior surfaces and a plurality of ribs for reinforcing the resiliency of the band. The arm band may also have a contact surface for engaging a wearers arm when the arm band is put on. The contact surface may take the form of lip extending outward from a first end of the band. Alternatively, the band can be formed in a spiral manner to provide the contact surface at the end of the band.

Abstract: An improved muffler of relatively large size for internal combustion engines is shown, which comprises a main hollow shell, assembled from half sections with caulked flanges to join the sections together into an airtight enclosure, at least one perforated baffle plate having its periphery clamped between the opposite edges, exhaust inlet and outlet ports. The baffle plate is bent into a curve defining in the inside of the shell chambers differing in volume from one another, through which the exhaust gases from an engine are forced to flow so that the gases alternately expand and contract. In addition to the rigid integration of the baffle plate with the shell by caulking, various interlocking and elastic members rigidly interconnect between the plate and the inside walls of the shell in such a manner as to reduce development or transmission of the vibrations in the shell components due to the pressure oscillations of the exhaust gases.

Abstract: An improved overhead valve internal combustion engine is disclosed in which an intake port defined in a cyclinder head for communication at its outlet side opening with a combustion chamber opens at its inlet end in a first side of the cylinder head for connection to a carburetor. An exhaust port also formed in the cylinder head for communication at its inlet side opening with the combustion chamber opens at its outlet end in a second side of the cylinder head that extends substantially perpendicular with the plane of the first side for connection through an exhaust duct to a muffler that is located on the opposite side of the cylinder head to the carburetor. This arrangement can enhance cooling of the cylinder and cylinder heads of an engine and miniturize engine overall size, without shortening the length of the exhaust duct connected between a muffler and exhaust port.

Abstract: A color facsimile machine includes a three-color plotter for recording image information received from a transmitter. Even if the transmitter is a monochroic facsimile machine so that image information received is monochroic, the present color facsimile machine records the image information with a preselected color. In addition, if image information received is multi-color image information, then the present color facsimile machine can record the image information in accordance with the color of an original image. Besides, it may also be so set to record any accompanying information, such as identification of the transmitter and data or time of reception, with a preselected color.

Abstract: A valve gear for a four-cycle engine having an overhung crankshaft connecting with an output shaft, wherein a guide portion having such a shape folding the output shaft as to return back to a starting point in two turns, is formed on the output shaft, and an interlocking mechanism guided by the guide portion is provided to open the valves for the four-cycle engine. It is preferable that the guide portion is formed as cam face displacing the interlocking mechanism. The guide portion can be formed on a block other than the output shaft for easy machining and also for adjustable valve timing.

Abstract: An improved exhaust system for water craft engines is disclosed, which consists in the main an exhaust manifold connected to the cylinder exhaust port of the engine, an exhaust pipe joined at one end to the exhaust manifold and a diffuser connected at one end to the other end of the exhaust pipe and at the other end to the rest of the exhaust system including a muffler and steam separator. The exhaust pipe is divided into two axial parts, the first vertical, largely U-shaped pipe portion for direct connection to the exhaust pipe at downstream thereof and the second horizontal pipe portion for connection at one end thereof to the first pipe portion at downstream thereof and at the opposite end to the diffuser. The second pipe portion is disposed to extend adjacent to the exhaust manifold and made integral therewith in a rigid assembly, with the first pipe portion being releasably secured to the exhasut manifold and second portion through bolts for easy disassembly in servicing.

Abstract: A liquid-cooled internal combustion engine including a cylinder (1) and a cylinder head (6) wherein cooling liquid chambers (4, 9) are formed around a combustion chamber and wherein the cylinder (1) and the cylinder head (6) are interconnected through sealing means. The sealing means arranged on the contacting end surfaces of the outer shells (5, 10) of the cylinder (1) and the cylinder head (6) comprises a resilient sealing member (23, 24, 27), and the sealing means arranged in the contacting end surfaces of the inner shells (3, 8) of the cylinder (1) and the cylinder head (6) comprises a metallic sealing member (21, 21', 25).

Abstract: A crankchamber precompression type two-cycle internal combustion engine including at least one cylinder assembly, each cylinder assembly including a stepped cylinder constituted by a minor diameter cylinder portion and a major diameter cylinder portion, a stepped piston received in the stepped cylinder and constituted by a minor diameter piston portion and a major diameter piston portion adapted to be fitted in the minor diameter cylinder portion and the major diameter cylinder portion respectively, a crankchamber connected to the major diameter cylinder portion, a working chamber defined between the minor diameter cylinder portion and the minor diameter piston portion, and a sub-intake chamber defined between the major diameter cylinder portion and the minor diameter piston portion.

Abstract: A crankchamber precompression type two-cycle internal combustion engine including cylinder assemblies of an even number consists of at least one pair of cylinder assemblies having working cycles with 180.degree. phase difference, each cylinder assembly having a stepped cylinder constituted by a minor diameter cylinder portion and a major diameter cylinder portion, a stepped piston received in the stepped cylinder and constituted by a minor diameter piston portion and a major diameter piston portion, the minor diameter and major diameter piston portions being in sliding engagement with the minor diameter and the major diameter cylinder portions of the stepped cylinder respectively to provide an annular space serving as sub-intake chamber in the major diameter portions of the cylinders, the sub-intake chambers being connected to an auxiliary scavenging nozzle oriented toward a combustion chamber of the other associated cylinder.

Abstract: A cooling system of a liquid-cooled multicylinder engine of the two cycle type, wherein a crank shaft is journalled by bearings housed in bearing housings of a small diameter mounting therein airtight seal members as well as the bearings and located at opposite end portions and an intermediate portion of a crank case consisting of upper and lower members, cylinders are arranged on the upper end surface of the upper crank case member, and each cylinder has a suction conduit attached to one side thereof and an exhaust conduit attached to the other side thereof, includes a centrifugal pump driven by the crank shaft for circulating a cooling liquid and located in a recess on the suction side of the crank case between cylinders, with the axis of the pump being parallel to the crank shaft.

Abstract: A non-contact type seal between two adjacent crankchambers of a multiple cylinder two stroke engines includes a sealing member fitted to the crankcase to encircle the crankshaft or the sleeve fitted to the crankshaft with a slight clearance between the sealing member and the crankshaft or the sleeve. A lubricant oil passage is formed in the sealing member to open to the clearance between the sealing member and the crankshaft or the sleeve so that the clearance is filled with lubricant oil which is to be supplied to the bearings at the opposite sides of the sealing member. The seal between the two crankchambers is provided by the lubricant oil in the clearance.

Abstract: A two-cycle engine of the crank chamber preloading type of the construction in which a crankcase, a cylinder head and a cylinder are clamped together by a plurality of clamping members penetrating the cylinder includes a suction port formed in a wall of the cylinder, an exhaust port formed on a side of the cylinder opposite the suction port, at least one main scavenging port disposed between the suction port and the exhaust port and directed toward the suction port, and at least one ancillary scavenging port disposed above the suction port and juxtaposed against the exhaust port. At least one ancillary scavenging passage branching from at least one main scavenging passage and communicating with the ancillary scavenging port extends around an opening for one of clamping members on the suction side.

Abstract: An air cleaner for an engine of a snow mobile provided with an endless vehicle track driven by the engine, includes an air cleaner main body comprising a duct extending longitudinally of the snow mobile and disposed on a floor covering of the endless vehicle track. The air cleaner main body is connected at its forward end to a carburetor for the engine and includes a rearward portion formed with a plurality of air inlet apertures. A riders' seat is mounted on the rear portion of the air cleaner main body and includes a shock-absorbing member for enclosing the air inlet apertures and an outer cover member for covering the shock-absorbing member. The shock-absorbing member serves concurrently as a cleaning element of the air cleaner, and at least one air intake port is formed in the outer cover of the seat at its rear end or one or both of its sides. The air cleaner main body is formed with an increased volume section which serves as a muffler for silencing engine intake noises.

Abstract: Twin cylinder two cycle engine including a pair of stepped cylinders and a pair of stepped pistons slidable in said cylinders defining annular spaces of variable volume in said cylinders. The pistons are interconnected each other with 180.degree. phase difference. Air-fuel mixture introduced into the annular space in one cylinder is forced into the crankchamber of the other cylinder during the upward stroke of the associated piston, so that an additional charge is provided.