Plate 128Larger plate.
Larger plate.
2185. Guide bed,with square guides and renewable strip adjusted by set screws.
2186. Vee guide,withVstrip and set screw adjustment.
2187. Ditto, do.,with bevelled strip and set screw.
2188. Ditto, do.,adjusted at the top.
2189. Simple guide attachmentto a plain bar.
2190. Guide bars,adjustable, for wear.
2191. Engine crosshead,with adjustable guide brasses, set up by taper keys and nuts.
2192. Crosshead,tent round the rod.
2193. Crosshead side guidefor engine or pump, plan view.
(See alsop. 92.)
2194. Turn-over gearfor reversing a stamp, table or platen by rack and pinion.
2195. Double driving motionby belt for two saws, cutters, drills, &c., so that either may be put in work at various points in a half circle of the radius of the arm.
2196. Sun and planet gear.Ais a fixed wheel,Bis keyed to the barrel shaft,CandDare cast together and run loose on a stud on the crank arm.
2197. Two-tooth pinion gear.
2198. Cam spur gear,to give similar variable movements to those given by cams.
2199. Motion to vary the angle of a screw propellerblade, a windmill, feathering wheel, &c., by bevel gear and a central shaft.
Plate 129Larger plate.
Larger plate.
(See alsop. 96.)
2200. Atmospheric governor.RodAis connected to reciprocate with the engine,Bis connected to the equilibrium throttle valve,Cis an inlet valve for air, and D an adjustable outlet valve by which the speed is regulated. For continuous instead of intermittent action on the rod and pistonB, the air pumpAshould force air into an intermediate chamber above the pistonBby addition of a diaphragm and delivery valve.
2201. Gas engine pendulum governor.Hit and miss. The rocking tripCfalls out of gear by its own weight when the pendulum moves so fast as to release it. The upper ball is used to adjust the motion of the pendulum to the speed required.
Crank-shaft governors.SeeSection 79.
Self-regulating dampersare applied to boiler flues, and are operated by the pressure of steam, so as to regulate the draught.
Governing the speed of hoists.SeeNo. 1495.
2202. Gas engine governor.The revolving cam throws the vertical arm of the lever far enough to close the gas valve when the speed increases beyond the normal.
2203. Steam valve-regulator,to move a valve or other detail any fractional part of its stroke and hold it at that point. The main steam and oil cylinder valves move with the pistons. The cut-off valves are controlled by a hand lever and admit steam and oil to the same ends of their respective cylinders simultaneously; the pistons only travel till they cut off their own supply, the oil fluid preventing expansive action of the steam.
2204. Centrifugal ball governor,with cone wheel motion to operate the cut off.
2204A. Even-flow regulatoror governing valve, for drawing off from a tank.
(See alsop. 98.)
2205. Hook eyefor a guy rope.
2206. Slip hookfor pile driver, monkey, &c.
2207. Wire hookattachment for electric wires.
Plate 130Larger plate.
Larger plate.
2208. Loop or eyeshackle.
2209. Swivel shacklefor guy, rod, or hook.
2210. Slip hook.
(See alsop. 100.)
Indicatorsareemployed—
To register the entry and exit of workmen to or from a factory;
To register speeds and variation of load, steam pressure, &c., on an engine;
To register wind pressure, barometric variations—rainfall, sunshine, &c.;
To register periodical visits of a watchman or other official, and the hours of such visits;
To register visits to a bank safe.
2211. Indicator to register the flow of waterby its speed and pressure against a floating ball, which actuates a pencil moving vertically against a paper cylinder which is kept revolving slowly by clockwork.
(See alsop. 102.)
2212. Körting’s water jet condenser;requires 3 feet head of condensing water.
2213. Spray jetfor petroleum, water, &c., with air blast.
Automatic spray jets or sprinklersare constructed to spread or spray water over a considerable area by the force of the issuing current, for extinguishing fires, watering gardens, &c.
Fountain jetsare of many forms to deliver the water in close, spreading, or fan-shaped forms, artistically arranged.
2214. Spray jet,with spiral core.
2215. Spray jet,with annular orifice and dish-plate.
(See alsop. 102.)
2216. Pedestal bearing,with four brasses and set screw adjustments.
2217. Hydraulic oil pivotfor vertical spindle. Oil under pressure is forced into the channels between the bearing faces, the area and pressure being adjusted to the load. The surplus oil is returned from the oil well to the pump.
2218. Adjustable intermediate bearingfor a vertical shaft. It has three brasses set up by set screws and wedges.
Plate 131Larger plate.
Larger plate.
2219. Long bearing,with oil circulation.
2220.Vbearing,or support for a shaft or telescope.
2221. Plain double bearing,with one cap and one bolt.
2222. Vertical shaft bearing,formed of two similar toe-pieces of very hard steel running in oil.
2223. Pedestal, with side adjusting brasses,set up by set screws.
2224. Vertical shaft bearing,similar toNo. 2222, but with small coned toe-piece of very hard steel.
2225. Thrust-bearing for collar screw,having a loose collar secured by two pins, drilled half in the collar and half in the base.
2226. Similar bearing,with a loose collar screwed in and locked by a set pin.
2227. Similar bearing;the screw has a thick collar, with a turned groove and a pin drilled half into the collar and half into the base.
2228. Vertical pivot,with hardened screws.
Ball bearings.SeeSection 70.
Roller bearings.SeeSection 70.
2229. Bearing, with side brasses,set up by a set screw.
2230. Bearing, with 3 brasses,set up by a set screw.
2231. Bearing, with 3 brasses,the side brasses set up by wedge bolts, regulated on top.
2232. Bearing, with 3 brasses,set up by side wedges and top screws.
2233. Schiele’s vertical shaft bearing.
White metalis much used for bearings, and may be run in around a shaft. The brasses are sometimes made of skeleton form to receive white metal in this way.
Plate 132Larger plate.
Larger plate.
(See alsop. 106.)
2234. Ring seam,with cover strip.
2235. Folded ring seam.
2236. Half folded seam.
2237. Filleted ring seam.
2246&2247. Intermediate seams,or diaphragms.
2248. Elbow seam.
2249. Folded pipe seam.
2250. Junction ofTiron,plate andTorLiron verticals.
2251. Gusset platecorner stiffener.
2252. Plate endfor a tie rod.
2253.Hiron junction,as in a floor framing.
2254. Gusset plate junctionfor a braced framing.
2255. Gusset plate junctionforHgirders of equal depths.
(See alsop. 108.)
2256. Lever, with universal motion.
2257. Hand starting lever, cheap construction, formed of light channel-iron, with a bent lock bar engaging with holes in a sector plate cast on the bearing.
Locking levers.SeeSection 49.
Plate 133Larger plate.
Larger plate.
2258. Double lever,hand motion, for fire-engine, pumps, &c.
2259. Locking leverformed of iron tube with sliding catch rod inside.
2260. Starting lever,with hooked catch, taking into holes in a sector plate.
2261. Convex wormfor locking and adjusting a starting lever.
2262. Equalising leversfor springs and variable movements.
2263. Lever and racklifting appliance.
2264. Spring leverto lock in two positions.
2265. Hand leveradjustable to radius. With a bent handle it forms an adjustable hand crank.
Spring leverformed of steel plates. SeeNo. 1914.
Compound levers.SeeNo. 1367. “Roller board” movements in organs are of this type, but each pair of arms and its shaft or roller is mounted independently on a pair of end centres.
2265A. Double leverfor a plug cock, to be operated by two cords.
(See alsop. 110.)
2266. Lever action for a door, &c.,to lock it, open or shut, in fixed positions.
2267. Lever action for a gateor door, to open or close it and lock it in either position.
2268. Revolving eyeletto lock or release a rod or cord.
2269. Abutment lock.Can only be opened by revolving the tumbler by a key.
Plate 134Larger plate.
Larger plate.
2270. Secret screw attachment.The screw is fixed to the back of any article, and fastened to the fixingAby sliding along the slot. Two, three or four screws and slots are generally used.
2271. Bolt lock.The bolt can be released by revolving it 180°.
2272. Gib-key fasteningfor a sliding block or bracket on a plain bar.
2273. Similar fastening,using a wooden bar.
2274. Locking stud,used for iron bedstead laths.
2275. Catch and hook.
2276. Hinged catchto lock a screwed gland or nut.
2277. Letter lock,or combination lock. Any number of discs may be arranged on a spindle having a feather key, so that they must be all in a certain position to allow the key to slide through a notch or key way cut in each disc, so as to open the loop.
2278. Locked nut.
2279. Spring pawl,umbrella catch.
2280. Spring snap,released by pressing the open ends together.
2281. Locking pawlfor spur teeth.
2282. Spring handle.
2283. Spring pawl,locks the wheel against a moderate force, but gives way to a greater force.
Locked pawl motions.SeeSection 62.
2284. Locking devicefor lathe headstock or tool rest. The head of the central pin runs in aTgroove or under the lathe bed, and is clamped by the cone pointed set screw, which bears against a conical recess in the central pin.
2285. Radius bar,with notches to lock a hand lever in various positions. The lever may be hinged to lift out of the notches, or made thin enough to spring sufficiently for this purpose.
2286. Coned screw lockfor a standard foot, pin, or socket and spigot.
Plate 135Larger plate.
Larger plate.
2287. Set screw fixingfor needles, wires, cord, &c.
2288. Split block to grip a rod,with handle nut.
2289. Cam catchto lock a wheel or spindle.
2290. Locking gear for a shaftdriven by spur gearing, used in place of a clutch.
2291. Similar lock for a revolving head,standard tool post, &c.
2292. Tee groove for aThead boltforNos. 2290and2291.
2293. Horse-shoe distance pieceto place between a sliding pinion and the shaft collar to keep it either in or out of gear.
2294. Wedge plate and screw fasteningfor cutters, &c.
2295. Locking device for a spring lever,handle, button hook, &c.
2296. Locked centre pin.
2297. Cotter to lock a sliding spindle.
(See alsop. 116.)
2298. Link hingesfor reversing a seat back.
2299. Tape hingingallows the door to swing through 360°.
2300. Link hingesfor reversing a door or shutter in opening or closing.
2301. Forked jointfor pump rods, &c., with stepped gibs.
2302. Forked jointand swivel block for screw attachment.
2303. Swivel jointfor pipe work.
2304. Door hinged to an intermediate square strip,so as to swing through 360°.
Spring hinges.SeeNos. 1469,1470.
2305. Scarfed joint for pump rods,locked by a cross cotter and tapered ferrule.
2306. Swivel joint for pump rods, &c.
Plate 136Larger plate.
Larger plate.
2307. Screw socket and spigot jointfor rods.
2308. Conical socket jointand set screw.
2309,2310,2311&2312. Socket joints,various forms of. See alsoSection 28.
2313. Taper drill socket.The drill socket end is shaped to fit a cross slot in the holder, into which a taper cotter can be driven to loosen the drill; the slot gives a positive drive to the drill.
(See alsop. 120.)
2314. Lieuvain’s needle lubricator,with bent needle for oiling a crank pin. The latter has a pad attached, which rubs in passing the bent needle and thus takes off the oil.
2315. Pan lubricatorfor crank pin, to assist oiling from an oil can when revolving.
2316. Crank pin lubricator.A fixed oil cup, with a pad of flannel attached; the connecting rod end having a bent plate attached, which at every revolution rubs oil off the pad into its oil cup.
2317. Lubricating a loose pulleyon a fixed or revolving shaft by a “Stauffer” lubricator fitted to the shaft end.
2318. Lubricating a loose pulleyon a fixed stud.
2319. Mode of lubricating a vertical spindle,carrying a wheel or other top gear which prevents access to the bearing.
Sight feed lubricators,show the actual feed of oil in a glass tube filled with water through which the oil passes in drops; there are many varieties.
Compound lubricatorsare now being introduced whose function is to supply lubricant to every joint or part of an engine or machine requiring it, by automatic feed action from one reservoir.
2320. Syphon wick lubricator.
2321. Automatic lubricator,with intermittent feed. The revolving spindle is driven from the engine by a ratchet and pawl motion, and has a recess in it which in revolving delivers its contents of oil into the tube below.
2322. Spring piston lubricator.
2323. Gland, with oil well.
(See alsop. 122.)
2324. Dough mixer,or kneading machine.
2325. Mixing machine.
2326. Mixer for confectionery,worked by a crank.
Mixing of gasesby compound jets. SeeSection 45.
Mixing of liquidsis performed by jets, by stirring devices, and by running them through a pipe from two or more taps into a combining vessel.