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[...] on the gears, as is the case when bevel gears are used, and consequently not so much strain on any part of the differential gear. The action of this type of differential is exactly similar to that of the one just described and a careful inspection of the drawing should make its construction and operation perfectly plain to the reader. Automobiles, generally, and some makes of traction engines, are provided with a differential gear having spur pinions instead of bevel pinions. These spur pinions mesh with an annular gear, that is, [...]
[...] in this country have caused it to be known in Europe as the American system. In Europe the greater part of the power is transmitted by cog-wheels, but in this country 99 per cent. is transmitted by belting. The latter is used everywhere, from the sewing-machine to the 500 horse-power engine. BELTS can be run in any way, at any angle, of any length, and at any speed, and can be put up by any one of ordinary skill. They can be made of any flexible material - leather, rubber, gutta-percha, or cloth; yet while so handy and so popular, they have one fault, they are not [...]
[...] readily are known as insulators. Glass, dry air, cotton, and oil are good insulators. Inductor— The part of a conductor that passes through the magnetic field of the motor. Resistance— The property of a conductor that offers opposition to the flow of electricity. It manifests itself as heat. For a given material, the resistance is proportional to the length and inversely proportional to the cross-sectional area. To state this another way, a conductor twice as long as another of equal size will have twice the resistance, but a conductor of equal length and twice the [...]
[...] castings that were made from an original guard. We will refer to them by the letters at the bottom of each part: Crescent Jointer Guard Castings The castings for this project were reproduced by Cattail Foundry in 2007. Total cost of the castings was $17.50 for each of the four parts (total of $70) plus shipping (about $15). More castings can probably be made for approximately the same price if there is interest. Machining Instructions
Part A
First, we will start with Part A: Crescent Jointer Guard
[...] Hoover 7720-10 with shield on one side (some machines equipped with SKF ball bearings) Central Specialty part number X-1704 Accurate replacement: 6202-5/8, Qty=2-upper wheel, 2-lower shaft Guide thrust bearings: single ball 7/32" diameter, Qty=2 Craftsman (12") 103.24250 Original wheel bearings: TBD Guide thrust bearings: single ball 7/32" diameter, Qty=2 Craftsman (12") 103.24280 Original wheel bearings: (upper) 2x Norma XF-121-PP, (lower) Federal FS-1115 Craftsman (12") 113.24330 Original wheel bearings: (upper) TBD, (lower) SKF 6203 VLG dual rubber seals Replacement [...]
[...] Bearing Bandsaw Guides One method for balancing band saw wheels Restoring a Crescent 36" Band Saw Part 1 - Tear down and clean up Part 2 - Pouring Babbitt Bearings Part 3 - Finishing Up Tire Crowning Bandsaw Throat Plate Table Insert Measurements and Dimensions
2.2 - Bearings, Babbitt
Introduction to Babbitt Bearings What is Babbitt? Where to buy Babbitt? Babbitt Identification Guide Babbitt Pouring Supplies Lubrication Systems for Babbitt Pouring High Speed Bearings Pouring Babbitt Bearings [...]
[...] Presses : crank-pin, cutting, drop, drawing, geared, hydraulic, stamping, wheel Miscellaneous Machines : belt-polishing, centering, crank-pin turning, cutting-off, cross-head-pin turning, chucking, die-sinking, facing, forging and upsetting, gear-cutting, grooving, heading, marking, measuring, punching, platebending, profiling, rack-cutting, rail-bending, shaft-straightening, screw-making, quartering, rail-cutting, riveting (steam), riveting (hydraulic), riveting (pneumatic), tool-grinding, wheel-turning, wheel-quartering; and steam-hammers. It will be [...]
[...] first is the atmospheric line, while AG is the line of pressures. From Fig. 68 it will be noticed that part of the suction stroke occurs at a pressure lower than atmospheric. The reason for this is that a slight vacuum is created in the cylinder by the piston moving away from the cylinder head. This vacuum helps to draw or suck the mixture into the cylinder. The engine working on the four-stroke cycle requires two complete revolutions of the crankshaft, or four strokes of the piston to produce one power stroke or working stroke. The other three are not [...]
[...] Craftsman-badged units are a slightly different colour, as well as not coming standard with a stand and belt guard. One OWWM’er bragged in The Shop of getting his Parks completely apart in 3 hours. Me, I took several days to get mine apart, then several months of part time effort to clean and reassemble! In retrospect it was quite a bit more work than I had expected. Which is not surprising since I underestimated my house renovation, my sports car rebuild, virtually every woodwork project I undertake, etc. This wiki references the 1980 version [...]
[...] Rucker’s entry into a completion to see who could restore their planer-matcher first. The Restoration Part 1 (2012) Jun 03, 2012
The matcher that I will be working on does not actually belong to me - it is in the collection of our local museum - the Georgia Museum of Agriculture (formally the Agrirama) in my home town of Tifton, GA. I am going to have to see if I can find some history on this machine from the curator. For at least ten years, this machine sat outside near the museums "bone yard". About four years ago, during an attempt to get the museum’s [...]
While many old timers considered cementing belts the preferred method for making a belt endless, most belts can be sufficiently jointed together by some form of lacing. In selecting the type of fastener to use, bear in mind that the joints should approximate as nearly as possible a true endless belt with as small, strong and flexible of a joint as possible. No matter what kind of fastener is used, be sure the ends are cut square using a try-square and not relying on the eye, for if the ends are not square, the joint will not be true and [...]
[...] proportions of the machine illustrated in Fig. 6 show careful consideration of all these factors on the part of the designer.
Fig. 7, Double Head Horizontal Spindle Miller
It may be interesting to note in passing, that the Ingersoll Milling Machine Company makes a slab miller, which, while it still retains the general form of a planer, does not have a cross rail nor a top rail, the spindle housings being mounted directly upon the uprights, the upright carrying the outer end of the arbour being removable, making the machine "open-side," which is [...]
(Part 1) Of all the great structures at the World's Columbian Exposition at Chicago, the Administration Building, while not the largest, is one of the most beautiful, if not the gem of the Exposition palaces. Machinery Hall, however, has been pronounced second only to this in the magnificence of its appearance. It measures 846 by 492 feet, and, with the Machinery Annex and Power House, cost about $1,250,000. These several structures together cover an area of nearly eighteen acres. The main machinery [...]
[...] to 1,500 r.p.m. The majority of motors operate at speeds of 500 to 750 r.p.m. The belt horsepower of various makes of motors varies from 10 to 120 h.p. Carburetors for Traction Engines Kingston Carburetor Float-feed carburetors of the single-jet automobile type are used. The simpler designs, such as the Kingston (Fig. 78), are generally employed. Traction Engine Carburetor & Governor
The arrangement of carburetor and throttling governor for one form of traction engine is illustrated in Fig. 185. The [...]
[...] feature at once noticeable in this engine, which also works on the Otto cycle, is the chain or link belt shown at the right, operating the valve. The latter is simply a flat, circular plate with one port cut through it in the shape, nearly, of a sector of a circle. The valve seat is provided with two similarly shaped ports placed close together, one for admission of the charge into the cylinder, and the other for exhaust. Two ports, exactly the same in shape and similarly located, are provided in the cover plate which holds the valve in position. [...]
[...] brothers and sisters who had emigrated there from Egypt in the early 1950s. So in 1965 he boarded the m.v. Southern Cross in Durban en route to Sydney, Australia. In the hold of the ship, packed away in a crate, was his table saw and jointer combination. Some seven years later, in 1972, one of my father’s younger sisters decided that she would like to see her eldest sister still alive and living in Schweizer Reneke whom she had not seen for close on 25 years and also to see her other nephews and nieces, including myself, whom she had last seen as babies. My aunt decided [...]
[...] probably 175 lbs and I needed an extra set of hands. The first order of business is to remove the belt cover, exposing the VS Reeves Drive.
Turn on the DP and set speed almost to full (about the 4000 rpm mark) and turn off, IMPORTANT! Unplug Machine. MORE IMPORTANT!! The DP will look like this: Loosen the rear pulley set screw: At this time, it is easy to get to the set screw of the rear pulley because the belt has the shaft spread apart. Use a 5/32" allen key wrench to loosen the set screw. Now you will be able to pull the entire [...]
[...] steam ports are separated from the exhaust space by the two bridges D and E . F is the steam chest. V is a plain slide valve, commonly called a D slide valve. The amount S that the valve V overlaps the outside edge of the port, when in the middle of its stroke, is called the steam lap. Similarly the amount by which the valve overlaps the inside edge of the port when it is in mid-position is called the exhaust lap. M and N are the steam and exhaust pipes respectively. Admission Cut-Off The four valve events [...]
[...] flour to Cincinnati, a distance of sixteen miles. This engine had a single cylinder that was cast as a part of the steam dome of the boiler. Power was transmitted from the crank shaft to the rear wheels, through a system of spur gearing to a live axle that was on the outside of the fire box, and the differential gear was mounted on this axle and received the power through a large master wheel which carried the compensating pinions which transmitted the power to the axle through a large bevel gear that was keyed fast to the axle. With one loose driving wheel they carried [...]
{Rating} Motor Sizing From the 1936 "Delta 6" Belt Sander" publication Delta 6 inch Belt Sander : "It is inadvisable to install less than a 1/2 h.p. motor in a unit of this size, and a 3/4 h.p. motor with double V-belt drive should be employed if very heavy sanding is to be done. Only a constant speed, repulsion-induction motor should be used. " With the quality of modern V-belts, a single belt drive should be sufficient. [...]
[...] reducing-gear and secondary shaft that drives the governor by bevel gear, the automatic cylinder lubricator by belt, and cams for operating the exhaust valve and oil pump. Oil Injection & Compression The bottle-shaped extension is covered in by a hood to facilitate its heating by a lamp or air-blowpipe, and so arranged as to be entirely closed after the engine is started, when the red heat of the bottle or retort is kept up by the heat of combustion within. The narrow neck between the bottle and cylinder, by its exact adjustment of size and length, perfectly [...]
This page shows how the belt can be changed on a Walker-Turner 900 series drill press. These photos were taken during the process of a full restoration of a WT 936, which is a floor model drill press with a production table. The same process can be used on any 900-series machine. Walker-Turner 900 drill presses used at least two different designs for the upper bearing retainer that captures the bearing mounted on the top of the spindle pulley. One version uses a machined steel sleeve that slips snugly through the head casting from the top and captures the upper pulley [...]
[...] worked fine. It has the same length overall as the original Baldor motor. I also replaced the drive belt that connects the motor to the transmission spindle above it. The belt I bought was about 1”longer than the original. It worked, but life would be simpler if you could get an exact replacement or even one that is slightly shorter. Unplug the unit and then disconnect the cable from the motor at the switch. Loosen the cable retainer and pull the cable out of the switch housing. The motor is suspended from a flat plate which is in turn suspended [...]
[...] the cylinder water jackets, is shown in Fig. 98. In this A represents a relief valve, through which part of the compressed vapor may be allowed to escape to facilitate starting up the engine. The throttle valve is marked B , while C and D are gas and air regulating cocks; E is the reversing lever which, by being shifted from the upper to the lower position, brings a back gear into operation and causes the propeller shaft to run in a reverse direction; G is a clutch lever for stopping and starting the propeller shaft. The circulating pump H takes water through the bottom [...]
[...] strength of the materials in his boiler and engine. He ought to know the exact construction of every part of his machine. He ought to know how to make all necessary repairs and make all necessary adjustments, and he ought to be familiar with the scientific laws governing every operation of an engine or any of its parts. So far as possible without taking up mathematical theory further than can be done with simple arithmetic, the following lessons will present the subject in accordance with the general outline laid down above. When [...]
[...] is that the areas further from the center of the back of the animal stretch more, causing the entire belt to curve if the strips are all run the same way. In order to join them, I first used a paper cutter to square the ends, then marked them to cut tapers on the ends to lap and glue them. In order to cut the tapers (6" tapers for belts over 5" width, 5" tapers for 3-5" width, and 4" taper for widths under 3"), I bought a tool called a leather splitter. This one is an Osborne #84. The splitter tapers the thickness. It's manual, so it takes a bit of practice, but [...]
[...] table's comments section any information that references a different operating manual. CLICK ON THE PART NAME TO OPEN THE PHOTO. Parks Model 95 Parts Index Part# Part Name (click part for photo) Dimensions Qty Comments A1 Gear Box (Casting Only) - 1 "Three hump" cast iron model A2 Shaft Collar .75"ID, 1.25"OD 3 A3 Hollow Head Set Screw 3/16 head, 3/8x3/8 ?? 3/8 16 thread A4 12 Tooth Sprocket .75"ID, 1.375"OD 2 2.25" exterior sprocket diameter A5 Shaft Spacer [...]
Part 1 A portion of the historical matter contained in the Construction and Operation of Wood Working Machines , prepared by the editor of this Journal in 1870, having recently been several times quoted without even acknowledgment of its source, it has been decided to reprint the matter here, or so much of it as may have an interest to our readers. It will be proper to say that a good many of the facts presented are derived from a memoir of Sir Samuel Bentham, prepared by his wife, a very rare book, of which a copy was presented to the author by [...]
[...] scrounged up the machine didn't you? Oh, while you're scrounging, don't pass up a good deal on a 1" upright belt sander. They're great for polishing the rough stuff off before you start to buff - more on this later. OK now we have the motor. That's easy. The various wheels and compounds are bewildering at best. Let's look at some good choices for our type of jobs. Compounds Compound selection strikes fear into most people approaching this job. There are scores of them available. In reality, out of the scores of compounds available on the market, we'll need just 3 to do our [...]
By Keith S. Rucker
{rating} Part 1 - Machine Restoration Part 2 - Pouring Babbitt Bearings Part 3 - Finishing Up Introduction This story actually started back around the winter of 2003. A long time acquaintance from the OWWM web site, Randy Wilson of Indianapolis, IN, contacted me about a band saw that he had recently acquired. He had a lead on an old Cordesman & Egan band saw that was at an old factory that was being torn down. Knowing that this band saw was pre 1900, he wanted to rescue it and made [...]