Lathes . . . Drilling Machines . . . Hacksaw Machines Tool and Cutter Grinders . . . Slotting Machines Semi-Universal Grinding Machines, Etc. F. W. Hercus Manufacturing Co. Limited Manufacturers of Fine Machine Tools ANDERSON STREET, SOUTHWARK, SOUTH AUSTRALIA ;HERCUS 9” SWING Precision LATHES HERCUS 9" SWING PRECISION LATHES Hercus Lathes are characterised by fine workmanship and built by experienced craftsmen. They are built to close limits of accuracy in order that the work they produce will come within the exacting tolerances de- manded by modem indusiry. Finely finished spindles and bearings, direct smooth running belt drive with back gears for low speeds and heavy cuts, a wide range of threads that can be cut with a precision lead screw, drive through friction clutch for feeds, and a close grained precision ground bed all help to make Hereus Lathes high-class precision machine todls, The Bed is a close grained semi-steel casting, stongly constructed and well ribbed, having three vee ways and one flat, The two outer vee ways guide the saddle, and the third veo and flat hold the headstock and tailstock in perfect alignment. All bed castings are rough planed and seasoned before being precision ground to impart that degree of accuracy necessary to pass the rigid in- spection tests to which all Hercus Lathe beds are subject, The Back Geared Headstock is hand scraped to fit the bed; has a three-step pulley for flat belt or a fourstep pulley for vee belt, giving 6, 8, 12 or 16 changes of speed according to the type of drive used. The bearings and spindle are unusually large and are precision ground and bored to a fine finish to ensure long The integral adjustable bearings are provided with oil wells and a capillary oiling system, in addition to the usual oilers on top, which feed through fine cloth to filter all oil before reaching the bearings. The spindle, made of case hardened nickel steel is provided with a ball thrust bearing and takeup nut to eliminate end play. The hole is bored the full length to clear a 3” bar, and the front end is bored to No. 3 Morse taper, fitted with a sleeve and a No. 2 Morse centre, The reverse gears on the end of the headstock are con- trolled by a knob and plunger, and a lock screw is provided to lock these firm when required. The Tailstock is also hand scraped to fit the bed. It is of rigid design and can be set over for taper turning. The spindle is graduated and the centre is hardened and is self-ejecting. The tailstock is locked on the bed by an eccentric lock and lever. The Saddle, which has an unusually long bearing on the bed ways, is hand scraped to a perfect fit and provides a solid support for the cutting tool. The Compound Rest swivels to any angle, is graduated to 180 degrees, and has two locking screws. The cross feed and compound rest screws are fitted with graduated collars to read in thousandths of an inch. The dovetails of the slide ways are all precision ground. *Precision 3 MODELS OF HERCUS LATHES Swing Lathes are made in th Model A, Model B and Model C. e exception of the feed and thread anism, all three models are dan apron, which provides eds for both surfacing and hout or halénu The Model B Lathe has the conventional pick- © wheels and the auton type of apron, h provides for tudinal feeds and 23 cross feeds, ic feed ‘The Model C Lathe has pick-olf change gears and ¢ plain apron, and gears are provided to give a series of 45 screw threads and 14 Jongitudinal feeds using the lead screw MODEL A LATHE illustration Fig.HERCUS 9” SWING Precision \ATHES GENERAL SPECIFICATIONS (all models) Swing over bed Swing over saddle Length of bed Admits between centres Width of bed Hole through spindle Spindle nose ¥ Front spindle bearing Leadscrew acme thread ‘Compound rest hand feed 24" Cross slide travel Tailstock spindle travel Tailstock top sets over Small face plate diameter Collet capacity maximum Centres Morse taper No. 2 dicm. Spindle Speeds are set out on page 9 MODEL C LATHE Fig. 2 illustrates a Model C Lathe mounted on legs with tray and fitted with an H patiern drive unit with single speed drive from motor to countershatt. Legs and tray of this type, together with either single or two speed countershafts can be fitted to all models of Hercus lathes.Precision 1? ; PRECISION LATHE MODEL A All Model A Lathes are fitted i quick-changé gearbox as Fig. | threads and feeds are Changes for the vari ade by si ing two levers on the front of the gear- | box (Fig). All screw threads and power feeds shown on the index chart (Fig. 4). By shifting the gearbox levers, a range : : from 8 to 224 threads per inch, includ- ing 19, can be cut, and threads from available are 4 to 7 per inck ined by removing the 20 ud gear and replacing it ABOVE Fig. 4 Standard Modal & inch HERCUS os: Ree 7 eT d Ciao. | | Threads other than those sho index chart can be aa of additional chan: wheels. Thes cam always be supplied to order to suit the par ular thread recy c pits chit nat AUTOMATIHERCUS 9” SWING Precision LATHES AUTOMATIC APRON FOR MODEL “A” AND MODEL “B” LATHES Model A and Model B Lathes are A Lathes, gives an extremely wide equipped with an automatic apron, as range of feeds, as shown on chart shown in Fig. 7. This apron hos a Fig. 4) . worm drive and operating the tudinal and cross feeds. of the lead screw being Model C Lathes are fitted with a plain geared screw feed apron, as illustrated (Fig. 6). The cross feed is hand- operated and the longitudinal feed is obtained by eng the apron, lower _with the leadscrew. th, and when screw cuiting. tudinal feed when in the upper F n and cross eed when in the lower position, the centre position being neutral. An automatic safety device ensuresPrecision The Model B Lathe, Fig. 8, is simi to the Model A exce @ quick ch ge gear box. idler gear, and two compound idler the larger gears bein tho smPrecision RoE eS S arse wanna stir} ‘ Es ound idler g cast iron, 0, differs one idler gear and 2 co! jel B in th gears, the larger gears be neither quick change gear box he smaller ones steel. The pl pron. This consideral apron does not provide for any power machi 1 other cross feed; this is hand operated, and the longitudinal feed is obtained by engaging the half nuts with the lead. g feed change gears models ar screw after fi as per index chart, Fig. 11. Feeds obtained in this way range from .0021 to .0156 per revolution of the head- stock spindle,HERCUS 9” SWING Precision LATHES DRIVE UNITS Hercus Lathes can be fitted with two types of drive units. The H type as per Fig. 14, or the N type as per Fig. ISA. Either type of drive unit can be fitted with two-speed drive from motor te countersh ‘gether with either three speed flat belt or four speed vee belt drive from the countershaft to lathe spindle, gives 12 or 16 spindle speeds in lieu of 6 or 8 speeds obtainable with single speed countershatt. Spindle speeds obtainable from all four combinations of drive are set out on the opposite page, The N type unit drive Fig. 19A) is a self-contained unit mounted on a stesl baseplate which fits beneath the headstock end footing of the lathe, a packing plate cf equal height being provided for the tailstock end. Provision is made for independent adjustment of tension on each belt and toggle lover is fitted to loosen the belt for ease in shifting irom one step to another. The H type unit drive bolts direct on to the back of the lathe bed and is extremely convenient when the lathe is to be mounted on legs of cabinet stand as per Figs. 1A and 2 Tension of each belt may be adjusted independently of the other and an eccentric lover-operated device is provided to slacken both belts together for ease in changing from one speed to another. led to Hercus ©RIGHT—Fig, 60, Bolt Guards for N Pater Unit Drive BELT GUARDS. When required, guards can be supplied to cover either or both belts of both patterns of unit drives as per Figs. 59 and 60. Motor belt guards in both instances are of sheeimetal, fitting over a back- plate and quickly removable to provids access to the belt Drive belt guards are of aluminium and are hinged to facilitate changing f speeds. SPEEDS AVAILABLE WITH H AND N TYPE DRIVE UNITS Singlespeed motor drive and 3-step flat belt: 750 — 410 — 240 — 160 — 90 — 50 notor drive and @-step flat belt: 1120 — 620 — a60 — 245 — 135 — 80 580 — 320 — 185 — 120 — 70 — 40 e-speed motor drive and 4step Vee belt drive: 700 — 515 — 370 — 280 — 176 — 112 — 81 — 60 tor drive and 4step Vee belt drive: peed — 1050 — 770 — $50 — 420 — 230 — 170 — 120 — 92 Speed 540 — 395 — 280 — 215 — 118 86 — 61 — 47 Two-speed Motor Speed) 7 Motor Speed Fig. 25, Indoxing Square Turre SQUARE TURRET The square turret Fig. 25) is made to fit the T slot of the standard com- pound slide rest in place of the Ameri can pattern tool holder usually sup- plied. It is made to accommodate four #” square cutting tools and in- dexes accurately enabling these to be used in sequence. A variation of this turret is available suitable for fitting to the forming and cutoff slide (Fig. 27A, page 12) in place of the front tool post. Both forms of turret can be supplied as non-indexing if required. CUS 9” SWING Precision LATHESCOLLET ATTACHMENTS AND COLLETS The draw in collet chuck is the most accurate of all chucks, and is very much used for tool work and all other kinds of work where ex- treme accuracy is necessary. The draw-bar is hollow to enable all kinds of stock, solid wr or tubes, to pass right through, The adaptor or closing ‘sleeve fits into the No. 3 Morse taper of the lathe nose and is hardened cmd ground all over. The nose cap serves as q protection for the thread on the lathe nose and also to withdraw the adaptor from the lathe spindle. Collets can be supplied in- tock or in sets of 15 ranging m 1/16 "in 32nds. Collets of 64th sizes, together with standord sizes of squares and hexagons, can also be supplied from stock. Special collets comprising special or metric sizes of rounds, squares and hexagons not regularly stocked can be supplied to order. Square collets com be supplied in sizes from 5/32" to 11/32" Hexagons from 5/32" to 7/16” A/F. COLLETS FOR MILLING ATTACHMENT The collet attachment illustrated in Fig. 18 cam be supplied for use with the milling attach. index head. The standard adaptor or to the No. 3 Morse taper dex spindle and the special short itaw tube enables all collets, which fit the standard collet attachment tobe used with the milling attachment. THREAD CHASING DIAL The use of this attachment makes it unneces- the saddle to begin each successive ‘hen screw cutting. The dial is graduated nd numbered to indicate when to close the half nu leadscrew. = 9a ATTACHE Fig. 16—Handvwheel Drawin Collet At e- ABOVE—Fig. 18, 17—Standard and Special LEPT_Fig. 184. nerican P. “Tool Holser America : tool oldare areHERCUS 9” SWING Precision LATHES TAPER TURNING The taper turning attachment greatly simplifies the tuming of tapers or the boring of taper holes. It reduces 1 otherwise awkward job to a plain turning or boring opera tion, The cross feed screw must be removed when it is desired to do taper turning or boring work. Tapers up to 16}° included angle, or 34” per foot can be tumed or bored over a length of 7” in one setting. Swing over taper Fig, 20—Taper Turning Attachment attachment cross slide 5”. 9 This attachment cannot be supplied as a unit to be fitted } to the lathe alter having left the factory. It must be fitted ogo at the factory. The hand lever forming and cutoff slide ii cannot be used in conjunetion with taper attachment MILLING ATTACHMENT The milling attachment is made in the form of a T slotted vertical slide, having a movement of 3" and a face area of 3° x 6". ‘The vertical slide ewivels either way off the vertical to 90°, and is mounted on the compound rest base of the lathe, where it will swing through 360°. The work piece may be bolied direct to the T slotted vertical slide or it can be held in the vice as shown in Fig. 21. For indexing work such as squares, hexagons, or light gear cutting, the vice is replaced with the index head. Th has a No. 3 Morse taper in the front and an index plate is fitted to the back. The collet attachment shown in Fig, 18, page 10, is used with this head to hold small pieces, and larger work may be held with arbors made to fit Into the No. 3 Morse taper. A 24 division index plate is supplied as standard equipment; other numbers can be i supplied to order. MILLING CUTTER ARBOR Fits direct into the No. 3 Morse taper of lathe spindle and is held with the draw bolt. It has a capacity between the nut and the shoulder of 14” for cutters, 1” bore, and is i fitted with three spacing collars,Precision LATHES MANUFACTURING ATTACHMENTS LEVER TURRET ATTACHMENT This atta he bed ways in place of the tailstock, and is held by an eccentric clamping device. The turret slide is operated by the lever, and the head indexes automatically each time the lever is moved to the extreme right. The nut, with handle attached on top of the turret, locks it in position. Each position of the turret has independently adjusted feed stop screws to control the length of cut. The effective feed of the turret slide is 33. The distance contre of turret hole to top of slide is 1-7/16". Turret holes cre bored # when supplied with the lathe unless ordered otherwise. If the turret is sold separately irom the lathe, the purchaser must accept the res ponsibility of fitting to the lathe ond boring in position. When turrets are suplied this way the heles are rough bored to 11/16” SADDLE STOP This attachment clamps directly on to the bed, and is extremely useful for work where a number of shoulders need to be accurately spaced. It indexes to six positions, and, in addition to the six short stops as illustrated (Fig. 24), six long stop screws are also provided THE FORMING AND CUT-OFF SLIDE The forming and cutoff slide is fitted on the saddle cross-slide dovetail in place of the compound slide rest assembly. It is operated by a rack pinion and lever, and the operating position of the lever can be varied to suit the convenience of the operator. Two tool blocks are pro- vided and may be used, the front one for forming and the rear one for parting off or as desired. Adjustable stops are provided to regulate the mi the slide in either direction, The square turret (Fig. 25, page 9) can be supplied in a form suitable for mounting in place of the front tool post where it adds siderably to the usefulness cf this AS A TURRET LATHE The fitting of the lever turret attachment and the forming and cutoff slide virtually converts the lathe to a light turret lathe conjunction with the ment, is suitable for wide range of bar work, Chuck work can also be done using the hand lever turret, together with the forming and cutoff slide or the square turret Fig. 25, page 9) If the six position saddle stop (Fig. 24) is used, his adds to usefulness of the forming and cu off slide, and it adds consider ably to usefulness of the square turret because of the greater number of tools available. LEFT Lever Tarn Sk Fig, 278 Fig, 24 Six Position SaddlePE CMe La FOR HERCUS MODEL B & C LATHES PCRs Sa meee eT) Py METRIC THREAD CUTTING COG Gate es Po eae ead oR cma PrecisionHERCUS 9” S Precision THE TRAVELLING STEADY The Travelling Steady (Fig. 32) is attached to the lathe saddle and travel with it, It is used to support long slender shafts while being machined between the lathe centres, and is particularly useful for long thread cutting work. The adjustable jaws are made of cast iron machined all over, w! open out to 2” diameter, and are fitted with clamping and adjusting screws. i THE STATIONARY STEADY The Stationary Steady (Fig. 33) clamps on to the bed guide ways and is used to support long shaits between centres or to support the cuter end of shatt while the other end is held in the chuck. The 3 adjustable jaws are made of cast iron machined all over and will open out to 2" diameter. The jaws are also fitted with clamping and adiusting screws. The top half of the stationary steady is hinged to facilitate insertion and. removal of work piece, THE MICROMETER SADDLE STOP The Micrometer Saddle Stop (Fig. 34) is a precision stop with micrometer adiustment and is very useful for facing shoulders when tuming or boring Tus not an cutomattic saddle stop, and the saddle should always be brought up to it by hand. CHUCKS Chucks as shown in Fig. 35 are recommended as the most suitable for Hercus 9” swing lathes for all general purposes. A 6” or 63” light pattern 4aw independent ond a 4” standard jaw self-centreins having 0 sets of jaws, Suitable chucks are stocked by the distributors and can be purchused either direct mounted or unmounted. Chuck mounts as per Fig. 37 ate supplied for unmounted chucks. The work of mounting can be done at an exira charge, or the purchaser cam do the work.HERCUS 9” SWING Precision LATHES Fig. 36—Large Face Plate, Fig. $7—Chuck Mounis, GB-44-Standard Centres for Metal fot LARGE FACE PLATE, Fig. 35. Screwed to fit spindle nose is slotted for clamping work or fixtures. It is strongly ribbed and is 7{" diameter. CHUCK MOUNTS, Fig. 37. These are supplied rough turned and screwed to fit the lathe nose in 3 standard sizes: 4”, 5" and 6” diameter. DRILL PAD, Fig. 38. Is used in the lathe tailstock to support flat work when drill HOLLOW CENTRE, Fig 39. Has 60° conical hollow centre for supporting parts such as shofts which are not centred. Will accommodate up to 3” diameter. Made of tooi steel hardened and ground all over. CROTCH CENTRE, Fig. 40. Is used in the tailstock to support round work for cross drilling. TWO-THIRD CENTRE, Fig 41. This is used in the tailstock when turning very small diameter work on centres where the full centre would foul the turing tool. HALF CENTRE, Fig. 42. If used in the tailstock with extreme care it will centre work very accurately. SQUARE CENTRE, Fig. 43. Used in the tailstock for centreing material or for trueing up out of true centres in work. STANDARD CENTRE, Fis. 44 Headstock and Tailstock centres are inter changeable, made of tool stesl hardened and ground all over. Angle 60°, No. 2 Morse taper. Two are supplied with each lathe.HERCUS 9” SWIN Precision LATHE WOOD TURNING EQUIPMENT HAND REST, Fig. 45. Used for readily ground up from standard wood tuming. Is 12" long, and re "square tool bits, places the short 4” rest shown in Dep GAN, Fig, 51. This is made i ee - 7 to clamp on to the back of the cross-slide base. It is adjustable ¢ Equipm y SCREW CENTRE, Fig. 46. Used in © i the headstock spindle of the lathe or heigl ic" Fe velled to 1 for turing wooden dises and sims | dtop the lubricant direct on lar work cutting tool. SPUR CENTRE, Fig. 47. Used in headstock of lathe to drive wood for taming between centres, CUP CENTRE, Fig. 48. Used in tailstock of lathe for wood turing between centres. HAND REST, Fig. 49. Made up of base and| T resis 4° and 12” long. Made of cast iron and fits on compound rest base of lathe in place of compound rest. TURNING TOOLS, Fis. 50. This set of eight tools cover most general turning w. They are made from 2” sq, 18% tungsten steel, forged, hardened, and ac- curately ground to shape. For the user who prefers too] holders, the standard toolpost supplied as’ part of the equipment with Hercus lathes accommodate standard tool having 3 F holder Tools for use in the Square (Fig. 25, page 9) can beCOLLET RACK, BORING TABLE COLLET RACK table (Fig. $8) place of the cross slide an ELECTRICAL EQUIPMENT ical ig not manufactured by us, bul ym stock to suit either 240 volt single phase The recommended size of motor and _unie: ise ordered, ted, together type. 56. voltages other than those giv HERCUS 9” SWING Precision LATHESA range of Mada bby F, W. HERCUS MANUFACTURING CO. LIMITED Precision MACHINE TOOLSA. Tool and Cutter Grinding ‘Machine. B. Abrasive Cutolf Machine C. 6" x 6" Hacksaw Machine D, Piston Finishing Machine E. 9" x 18" Semi-Universal GrinderSue HERCUS 9” SWING Precision LATHES INSPECTION OF HERCUS LATHES strated The inspection sheet here (Fig. 57) is a copy of the inspection sheet which accompanies every lathe that leaves the Hercus Works. duplicate is also kept for o ence, addition to checks shown on the spection sheet, every lathe is sub- er 50 a \al checks atter assembly. These checks a only to the as sembled lathe. ry individual part the lathe is inspected after every 1g operat guard against faulty material or workmeamship reach ing the finished product. ‘The inspection department only passes work that comes within the rigid toler been worked out after years of experience on this class This ensures that only paris ds near perfect as possi sembled into Hercus Lathes, are as. F. W. HERCUS MANUFACTURING CO, LIMITED. ANDERSON STREET, SOUTHWARK, S.A. HERCUS 9" PRECISION LATHE Model A Machine No LBS! INSPECTION RECORD ee end inclined towards tool) fee end 2002) AXIS OF CENTRES Horizontal plane lane ing) : “0005 face concave only within bed correctly, travel smoothly, and clamp all work correctly ‘All Change Wheels and bushings have been tested ord REMARKS: ———_= inepeces oy Ay Eovee Ol owe 5/47.F. W. Hercus Manufacturing Co. Limited Manufacturers of Pine Machine Tools ANDERSON §TREET, SOUTHWARK, SOUTH, AUSTRALIA