(See also p. 10.)
1938. Rock anchor for suspension bridge chain or a guy.
Sea anchor; any floating body (immersed) presenting a large area to the water, as a spar and sail, quantity of bulky cargo, or raft of timber.
Concrete anchor: masses of concrete are used as anchors under water, or sunk in the ground.
Portable machines are anchored by attaching movable weights to the legs or base plates of the machine, also by driving stakes into the ground around the machine.
(See also p. 10.)
1939. Ratchet rod for adjusting and locking a lever in any required position.
1940. Micrometer screw adjustment for a lever or crank arm, which may be locked to its shaft by the clip boss and screw, or released at will.
1941. Spring pawl adjustment; has sufficient grip to hold against a moderate pressure, but may be moved by increased pressure.
1942. Micrometer adjustment for a cam lever grip.
1943. Micrometer screw, with swivel motion.
1944. Wedge and pinion adjustment, used for applying pressure to type in printers’ formes.
1945. Adjustable rack for any fixing, secured by a staple bolt.
1946. Adjustment for a spiral torsion spring to regulate its tension.
1947. Callipers with fine adjustment by a taper screw, tapped into a hole in the split leg, so that the taper screw springs open the slit and thus extends the opening of the calliper legs.
1948. Adjusting pawl and head for adjusting the tension or compression of a torsion spring, which is fixed to the spindle.
1949. Screw adjustment for rollers to maintain parallelism.
1950. Adjustment for expanding a split borer, reamer or rose bit, with micrometer graduation.
1951. Screw adjustment for a lever.
1952. Adjustable centre pin, traversed by a screw, and fixed after adjustment by a nut and washer.
1953. Fine screw adjustment for any movable part.
1954. Fine screw adjustment for a radial arm.
1955. Division plate, with differential dividing on its opposite faces.
Belts, bands, &c., are adjusted by corresponding series of holes and laces, screws or rivets to fit them.
(See also p. 12.)
1956. Fast and loose pulleys; the fast pulley is larger in diameter than the loose pulley, to allow the belt to run slack when running idle.
1957. Round rubber belt gear.
1958. Device for tightening a belt; two guide pulleys are run on studs fixed to a locking lever, the pull of the belt rocks this lever as far as the slack of belt will allow, thus keeping the belt tight.
1959. Wide belt pulleys, cast with a double set of arms (shown in section).
1960. Belt drive for two pulleys.
Vee belts are used to run over V grooved pulleys. See No. 1243.
Link belts; formed of leather links connected by steel wire centres in the form of a wide pitched chain (as No. 196).
Cord belts are formed of guttapercha, indiarubber, leather, raw hide or catgut.
Raw hide is frequently used for belts; it is stronger than leather, harder in substance and less porous.
(See also p. 12.)
1961. Swinging fixing, with ball and cup joint.
1962. Ball joint for any swinging fixing required to be released or secured in various positions.
(See also p. 14.)
1963. Steam engine dash-pot; a steam cushioning device for valve movements. The cylinder is always full of steam under pressure, and a small bye-pass groove provided to allow steam to pass the piston when a blow or push is received. See No. 1480.
1964. Railway car brake, fulcrumed on the axle spring, so that the loaded car gives the pressure applied through the lever.
1965. Double car brake; applies the grip to the wheel rim without cross or side strain on the axle.
Brush brake. A brush of stiff bristles or steel wires is sometimes used as a brake to a revolving pulley.
(See also p. 16.)
1966. Boiler, with furnace for consuming town refuse. Meldrum Bros. patent, fitted with forced draught furnace.
(See also p. 20.)
1967. Type of air propeller, or wind turbine, not centrifugal; the air is driven parallel to the axis of the fan.
(See also p. 22.)
1968. Shrunk ring fastening for segments of wheels, bed-plates and framing. A wrought-iron ring is shrunk over two lugs cast on the adjoining pieces of the frame, &c.
1969. Foundation for gas engine on a fire-proof floor, with several layers of felt between to diminish vibration and noise.
1970. Box bed-plate, sometimes used as a tank, air reservoir, surface condenser, &c.
1971. Standard type of stand for a light machine.
1972. Box-bed, frame or plinth, constructed of flat castings joined by grooves and fillets and long bolts or rivets.
Columns, handrailing, and other parts of machine framings are used as air-vessels, drain-pipes, and for enclosing working rods and parts of machines.
(See also p. 24.)
1973. Cam plate and levers, with rocking motion; the slots can be formed to give any intermittent, or variable motion to the lever ends.
1974. Cam lever motion from a reciprocating rod.
1975. Spiral or wheel cam to give a reciprocating motion to a bar.
1976. Compound cam to operate a number of radial grips or arms.
1977. Internal compound cam to operate a number of radial slides for internal grip.
(See also p. 28.)
1978. Hinged hand-crank.
1979. Joy’s patent hydraulic eccentric for steam engine reversing gear. The centre block—keyed to the crank shaft—has two small rams working in cylinders in the sheave, and the position of the eccentric is controlled by a hand-lever and pump forcing oil into the cylinders through a channel in the crank shaft and rams.
1980. Double eccentric, with two diameters or throws to give alternately two different lengths of stroke to an eccentric rod.
Shifting eccentrics. See Valve gear, Section 79.
Crank shaft governor gear. See ditto, ditto.
1981. Three-throw bent crank.
1982. Diagonal crank pin to give a rotary reciprocating motion as well as an up and down motion to a piston or rod.
Adjustable hand crank. See Nos. 2570, 2265, 2523.
Adjustable eccentrics. See Nos. 188, 189, 190.
Eccentric crank motion. See Nos. 174, 175.
1983. Eccentric variable-throw crank pin. The pin is formed on an eccentric stock which can be revolved by a worm and wheel.
1984. Crank motion to give, from one crank having a regular motion, an irregular motion to a second crank or vice versâ. The speed of the slotted crank varies throughout its circle of revolution.
(See also p. 30.)
1985. “Chain Gear Co.’s” patent pitch chain. The tendency of the chain to travel to the point of the teeth is believed to keep it always up to pitch.
1986. Pitched chain, with flat links, open centre and cylindrical distance pins A A to fit a sprocket wheel. Bicycle drive chains are of this class.
See p. 152 for Chain Wheels.
(See also p. 32.)
1987. Swivelling gear for car wheels.
(See also p. 36.)
1988. Eccentric disc grinding mill. The discs have grooved faces, annular, radial or spiral.
1989. Grinding face tool, with segments of stone or emery.
1990. Huntingdon’s stamp mill.
Surface grinding, filing and polishing; are performed by means of emery, files, glass and emery paper and cloth, revolving stones and emery wheels, brushes, endless bands fed with emery and other powders, &c.
1990A. Ball mill for grinding various substances.
(See also p. 40.)
1991. Coil-grip friction clutch. By the Shaw Engineering Co., Bristol. The coil is of steel, in the form of a spring.
1992. Internal grip friction clutch. The internal ring is split at one side and expanded by the oval pin attached to the arm. The latter is usually reciprocated by a sliding sleeve on the shaft (as No. 282).
1993. Jaw clutch thrown into gear by partial revolution.
(See also p. 42.)
1994. Coupling to allow two shaft ends to run a little out of line; the centre piece has a cross feather at each end at right angles to each other, which engage with cross grooves in the shaft end pieces.
1995. Split sleeve coupling tightened on the shaft by two cone bushes and nuts.
1996. Flange coupling, with recessed grooves for the bolt heads and nuts.
1997. Angle coupling for shafts, instead of bevil gearing.
1998. Angle coupling for shafts at any angle (shown at angle of 90°) consisting of four crank pins sliding and revolving in holes bored in the shaft ends.
(See also p. 42.)
1999. Spring connecting rod of steel or wood.
2000. Attachment for connecting rod to a pump ram, with provision for taking up the brasses by a long screw.
2001. Connecting rod end, the back brass being set up by a set screw with coned point, which displaces by penetration a number of steel balls or shot.
2002. Solid rod end, with wedge gib and nut adjustment for brasses; the latter take out sideways.
2003. “Marine” connecting rod end.
2004. “Marine” connecting rod end, with metal cap, and one half brass.
2005. Wedge cotter and brass bearing to take the thrust of a connecting rod off its centre pin.
2006. Solid end for connecting rod; brasses are set up by a capstan screw.
2007. Anti-friction rod end, where the strain is all on one stroke (as in single-acting pumps), the strain coming on the friction roller.
2008. Simple connecting rod end and half brass for single-acting pumps, &c.
2009. Solid link, with swivelling segments housed in a box formed on the valve spindle.
2010. Connecting rod end, with end block to take out sideways when the brasses can be removed.
2011. Rod end, with fixed pin secured by a cotter and nut.
2012. Connecting rod end, crosshead and gudgeon, showing metal renewable plugs let in on the wearing faces of the gudgeon pin.
2013. Strap end, with diagonal key. Sometimes more accessible than a straight key.
(See also p. 46.)
2014. Crane, with sliding jib.
2015. Suspended travelling hand crane.
2016. Basement crane, projected diagonally upward when in use. The winch is a fixed one.
2017. Loophole crane, projected horizontally when in use by a handrope gear working a pinion and rack, or by a chain wound upon a barrel.
2018. Travelling wharf crane to span a railway.
(See also p. 54.)
2019. Balance for a suspended light, lamp or similar article, allowing it to be raised or lowered while the balance weight only travels half the distance, and is therefore twice the weight of the articles balanced.
2020. Balance box. The cover is made as heavy as the box.
2021. Balanced cutter head for a milling or moulding machine.
(See also p. 56.)
2022. The “Dake” square piston engine; has a reciprocating double piston and a transverse sliding block, by which rotary motion is communicated to the crank pin.
2023. Chapman’s patent crank motion. In this gear the cylinders are fixed at right angles and their strokes are four times the radius of the crank, which is coupled by a link with equal arms (of the same radius as the crank) to the two crossheads direct.
2024. Crank motion. The crank pin runs in a sleeve having a sliding motion along the lever.
2025. Crank motion (in plan), with side connecting rod and off guide. The crank shaft crosses the piston rod as near as may be.
2026. Crank motion, with semi-yoke crosshead.
2027. Crank motion, with yoke connecting rod.
2028. Crank motion, for a pump, the handle describes an elliptic path.
2029. Bouchet’s crank motion to avoid dead centres.
2030. Eccentric hand crank motion. The connecting rod has a ring-shaped end, and the strap is revolved on the centre pin by a handle fixed to it.
2031. Crank motion to work a sliding tool or movement on a bar or guide.
2032. Offset crosshead and guide crank motion for a pump or air compressor.
2033. Crank motion to drive a swing arm, or vice versâ.
2034. Side crank motion.
2035. Atkinson’s crank motion to drive the flywheel two revolutions to one double stroke of the piston.
(See also p. 62.)
2036. Compound lever shears.
2037. Lever and frame gear for applying great leverage, with a detent to prevent running back.
(See also p. 62.)
2038. Jointed tube for a travelling, hydraulic, steam, or compressed air, hoisting, or other engine.
2039. A travelling wheel may be driven by a long pinion without affecting the travelling movement of the wheel.
2040. Travelling spur gear similar to last, to convey continuous motion to a travelling machine.
Hydraulic transfer. Two rotary motors (hydraulic) are used, one as driver, the other as motor, and connected together by two pipes forming the suction and delivery pipes, by which a continuous circulation is kept up, and the motor driven by the driver, the latter being driven from a shaft or engine. The pipes may be taken a great distance, if made large enough.
(See also p. 64.)
2041. Pin borer, for cutting out circular blanks with a central hole, such as washers, &c.
2042. Wobbling circular saw to cut dovetail grooves.
2043. Expansive facing, or boring pin bit.
2044. Revolving cutter, with adjustable inserted circular cutter.
2045. Inserted circular saw teeth, easily sharpened, reset, or replaced.
2046. Chain cutter.
2047. Hollow taper bung borer. Bores a taper hole by enlarging a plain hole bored by an ordinary bit.
2048. Square hole boring bit, for wood. A square chisel containing a twist borer.
2049. Turning tool for metal. Front tool.
2050. Turning tool for metal. Knife tool.
2051. Chasing tool for V threads.
2052. Turning tool for metal. Screw tool for square thread.