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SLOAN & CHACE MFG. CO., LTD'

CAPACITY:
7" swing, 18" between centers (bed 35 inches long) , 5/s " through draw-in spindle, ~" with draw- in spindle removed.
H EA D of the No. 51/2 Lathe carries a hardened and ground spindle having straight cast iron bearings fitted in taper sleeves
having threads cut upon each end upon with ajusting nuts are mounted; by loosening one nut and tightening the other, the wear of the spindle is taken up, A hardened and ground coHar, screwed Into the small end of the pulley and taking its bearing upon the inside of the front bushing, provides the adjustment for taking up the end play. The end thrust is taken upon the front shoulder of the spindle. The front end of the spindle has an outside thread and straight bearing upon which large face plates and chucks may be carried.

The spindle collets are very long , are of the self -centering spring type, and have a twelve degree angle. The cone pulley has a row of 120 holes in the outer flange. accurately' spaceing in which an index pin opera!~s, giving sub- divisions of 60, 40, 30, 24, :'-CI. 15. 12. 10, S, 6. 5, 4, 3 and 2. The cone steps are 1~~~ " wide. TAILSTOCK is of the ~`off -set" type-the casting curving outwardly toward the back of the lathe ~ leaving the center over-hanging, thus allowing more room for manipulating the slide rest screw. It is bored in special fixtures which insure perfect alignment and interchangeability. BED-WAYS are of the standard Sloan & Chace .double V type which, while more expensive to build than the Hat beds of other lathes, has proven much superior in actual service. The double V construction gives the best grip and a more uni- form wear. The bed-ways and bases of all fixtures are scraped to master gauges, and we guarantee correct centers and alignment.

COMPOUND SLIDE REST is supported on a shoe having beveled sides at right angles to the bed-ways. The shoe is held to the bed-ways by means of a coiled spring, and is firmly fastened by a binder bolt alld spider nut. The tool post slide has a circular base graduated to a full circle of 360 degrees, permitting the slide to be set at any angle. The slide screws are 20 threads per inch, have a travel of 41[2 inches, and have collars graduated to read in thousandths of an inch, and have adjustable cone bearings which permit of instantly taking up all lost motion. All moving parts are hand scraped to perfect fits, and the design and construction of the slide rest gives a maximum of strength, rigidity and accuracy, By employing an off -set shoe the slide rest may be mountcd on either side of the lathe bed, front or back, and in ~L,ner right or left hand positions, thus performing all con< ~ivable operations.

COUNTERSHAFTS are made in two styles-Wall and Wall- Rod. The wall countershaft is built with either two or three speeds (the third speed being used to revolve the lathe back- ward for such work as thread cutting ) The wall rod countershaft is built with either one or two speeds. A grinding countershaft, used in connection with the Grind- ing Attachment, can be mounted with either the wall or wall- rod countershafts. AH countershafts are equipped with ring oiling bearings which require attention only at long intervals.
GROSS WEIGHT of Lathe Boxed, 230 tbs.
DIMENSIONS of packing case, 42" x 16" x 16".

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Page Index Sloane and Chase
SLOAN & CHACE MFG. CO., LTD. No. 2 BENCH MILLING MACHINE is designed for use in the tool room, or for experimental work, though it is adapted to some classes of manufacturing. It is mounted upon the be: h, or a cast iron pedestal 36" high. No. rIENCH MILLING MACHINE, plain table with rack feed and screw cross feed, bead and spindle same as No. 2. CUTTER SPINDLE is identical with that of our No. 51/2 Lathe head, and all collets, arbors, etc., can be used with both machines. 2: eans of adapters work may be taken in the lathe head froni the lathe to the milling machine and then back to the lathe again, without removing the work from its setting—the bottom of the adapters fitting the milling machine table, while their upper surfaces fit the bases of the lathe head and tail stocks. SLOAN & CII ACEi.'(,. Co., LTD. 20 INDEX HEAD cnrrh.t, Imrd ground spindle having the same diameter nil einiel:ca pacify is the or spindle. The index plate is 5" in dlelnpl or, giving it clivuink.rence suffi-cient for as many as TAIL STOCK is 'accurately lilted In the table and Is 'ed in special fixtures which insures perfect alignment. TABLE has a T slot running through its venter from end to end and is 22" long, giving 111/2" between index head :uol tail stock centers. When the head and tail stocks of the No. 51A Lathe are mounted on the table, a distance of 61/2" remains between centers. The base of the table has a front projection which is grad-uated to a half-circle, the graduations being made in connection with a zero line on top of the top slide. KNEE carries full-circle vertical graduations, which, in con-nection with the half-circle graduations on the table base, enables the operator to bring the work into any desired position. FEED SCREWS on both the top slide and cross slide have adjustable dials graduated to read in thousandths of an inch, and have adjustments for taking up wear. ELEVATING SCREW is operated by a bevel gear shaft having a hand crank at the back of the column, and is capable of easy and accurate adjustment by means of shoulder grad-uations. The upright slide is firmly and accurately dovetailed to the column of the machine and carries both the knee and cross slide. VISE has jaws 31/4" long x 3/4" deep (8.25 x 1.9 cm.), open to take 21/8" (5.4 cm.). COUNTERSHAFT, three speeds, wall. TRAVELS: Vertical 7" (17.78 cm.), longitudinal 10" (25.4 transverse 43/4" (12.06 cm.). DISTANCES: 111/2" (29.21 cm.) between centers; greatest dis-tance from center of cutter spindle to top of table 7" (17.78 cm.). DIMENSIONS: Height 22", length 25", wid,,n 24"; box for shipment 31" x 28" x 26". WEIGHTS: Net including countershaft 308 lbs., boxed for shipment 370 lbs. SLOAN & CHACE MANUFACTURERS OF PRECISION MACHINERY ;ser
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Fig. 5. Close-up Showing a Piston Being Machined in the 13-inch South Bend Lathe

Fig. 2. Machining a Flywheel for a Steel Starter Gear in the 16" x 8' South Bend Lathe

"How to Service Flywheels"-Bulletin No. 3
Th e motor mechanics interested in handling flywheel work should have a copy of this 8-page bulletin, size 81[2xl I inches, for
reference becauseit shows the most practical and efficient method for doing this import-ant work. The bulletin contains more than
thirty illustrations show-ing how to mount a flywheel in the lathe for removing damaged teeth;
machining the flange for starter ring gear, and many other jobs.
Bulletin Mailed Anywhere in the World, Postpaid, No Charge


PARTIAL   LIST  OF  CONTENTS
-How nbsp;equipment.

Finishing Semi-Machined Pistons in the Lathe
Semi-machined pistons, solid or split skirt A set of six 3-inch .080" oversize pistons, types, made of cast iron, aluminum, or other
round or cam shaped, can be finished in the alloys, can be quickly and accurately machined South Bend Lathe in about thirty
minutes.in the South Bend Lathe to fit the cylinder The lathe is also practical for reaming pis-blocks of all automobiles, buses,
trucks, true- ton skirts, many other piston servicing operators, aero engines, etc. Lions, servicing armatures, bushings, connecting
Turning pistons in the lathe (the method used rods, valves, cutting screw threads, and for gen-by piston manufacturers) is the best
practice eral machine work. and the most practical way to do the work, as Piston servicing can be done on the 11-inch,
and ', 6-inch lathes, as listed in the Shop ts on pages 14 and 15~

Cam Shaped Pistons Cam shaped, elliptical or out-of-round pistons can be
machined in the South Bend Lathe by using the cam forming attachment. Figs.
6 and 7 show two drawings of a cam piston. Pistons are machined cam shaped so
as to permit clearance along the two sides of piston ad-
jacent to the piston pin hole as indicated by E and E' in Fig. 7. Cam shaped pis-
tons, when hot and in op- eration in the cylinder, ex- pand to a perfect round.
Cam pistons may be fitted much closer in the cylinder than round pistons.

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Equi



Fig.   7. iston   servicing  equipment.
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