Hi Dear Friends! - With limited space and many, many letters again, I'm not going to take your time with any of my idle chatter this issue - so we'll just go right to the letters -
DR. FRANK J. HALL, JR. is hunting someone to help him get an old Stover 6 HP engine working - if you feel you can help him -please write him at Poplar Perkins Building, Suite 422, 4646 Poplar Avenue, Memphis, Tennessee 38117.
ROY and MELVIN PATTERSON, Route 2, Waddy, Kentucky 40076 send along this plea: 'My brother and I are new at gas engine collecting and we would like to get some information on two gas engines that we are restoring. One is a 7 HP Witte, serial number B5413. The other is an Ottawa 2-1/2 HP, serial number 14375. We would like to know about when they were made and the original paint color they came out with, or the paint number. We really enjoy the Gas Engine Magazine. (Bless you Boys, and may you get your answers soon).
FLOYD THOMPSON, 1816 Ernest, Missoula, Montana 59801 writes: 'I would like to hear from some one who knows what kind of an engine this is - it is a side shaft, hit and miss, locking the intake valve closed instead of exhaust valve open. It has an 8' bore and 10' stroke. It also has an adjustable rod. It has no name plate or identification anywhere. I would appreciate any information I can get.'
A question comes from CARL BLACKWELL, Route 2, Box 206C, Wynne, Arkansas 72396: 'I receive your G.E.M. and enjoy it very much. I started collecting old engines about three years ago. I now have about eight engines and I know of no one else around here that collects them.
I need some help. I have a Fairbanks Morse engine, Style C-RPM 350 to 700. The name plate gives 118 displacement. I would like to know the horsepower. The engine is complete, except the magneto is missing. What kind of magneto did this motor use? Would like to hear from someone who has a motor like this.'
LYLE KISER, Route 5, Box 298, Harrisonburg, Virginia 22801 would like to know the year that his engine was made. 'It is a 5 HP, serial number 2770. Also, I have noticed that some New Holland engines just have a plain New Holland decal on the side while others are stripped or use a combination of stripes and a decal. Does anyone know which way mine was?' (Please let him hear from you if you know the answer).
Take note, Men - here's a letter from SCOTT STROVEN, 14038 68th Ave., Coopersville, Michigan 49404 - please read 'Needs Help! -I'm 12 years old and just bought this engine. It's a pumping engine, missing a carburetor. Original color looks like a dark maroon-white striping. It also had spider like pin striping on three sides of water hopper. Can someone tell me what kind of engine this is, so I know what kind of carburetor to ask for? If someone can send me a colored picture of their restored engine, I'll pay for picture.' (Guys, this is a 12-year old, don't lose him. He's our future gas engine leader -one of them, but he has an early start).
J. M. POWERS, 309 Cabin Road, S.E. Vienna, Virginia 22180 comments on a former article as follows: 'I read the (sweet smelling advice from Ed Hufnal) with interest. The article is correct, oil of wintergreen, known as MENTHOL SALICYLATE, is a marvelous penetrating agent, probably the best, and it will make your shop smell like a candy factory. However, a word of caution - Menthol Salicylate is a dangerously poisonous substance.
Because of its pleasant smell, it is especially attractive to children who find it hard to believe anything that smells so delicious could harm them. Even a small amount could be disastrous.
Another potentially hazardous practice in nearly every shop is the habit of storing dangerous liquids in coke and soda bottles. Children, especially toddlers, associate coke bottles with the good things in life.
Even if the contents taste and smell bad, a child may drink enough to cause serious damage or death. Acids, ammonia, solvents, gasoline, brake fluid and epoxy resins and plastics must never be stored in soda bottles.
If you must use methyl salicylate, buy only enough to do the job and destroy the rest. Don't store dangerous fluids in soda bottles and if you must have a sweet smelling shop, invite a pretty lady in to see your engines - you might even get curtains for the windows and flowers in your water hoppers!' (I think that is very good advice and very well versed - I'm sure J. M. meant no offense, just a precaution, and we should care enough about others to heed good rules - oft times we just don't think of the dangers in some daily duties we may do - I think it's good the reminders speak out. (Thank you!)
PEREY MEPHAM, 'Juniper', 31 Lurkins Rise, Goudhurst, Cran-brook, Kent. TN17 1EE, England says: 'I would like to thank you for printing my advertisement for information on my Pilter stationary engine. This information was quickly supplied by Lester L. Roos of Illinois who informed me that these engines were in fact manufactured by Stover & Co. and sold to Pilter & Co. of Paris, France, where they got their name. Please thank Lester who has been most helpful in forwarding information of the Stover engine.'
DONALD J. BENDER, 224 S. Lincoln Drive, Howards Grove, Wisconsin 53081 speaks to us: 'I am a collector at a small scale and as a special notice at this opportunity I own a quite rare engine to my knowledge. It is called 'Hamilton Gas Engine' and was built by Milwaukee Machinery Co., Milwaukee, Wisconsin. Serial No. 820, and is about 4 HP, two spoke type flywheels. It has about a thirty gallon round tank for cooling and is mounted behind the flywheels and the water is piped to the cylinder block for cooling. It is the throttling governor type engine with one cylinder. I would like to know more about it as I have never seen or heard of it published in the magazines.' (Any comments, Fellows, Have we ever had anything on a Hamilton?)
BERT LEHMAN, 2050 So. Humboldt, Denver, Colorado 80210 writes: 'My current restoration is a 3 HP Alamo 400 RPM, Serial #57824. One small piece in the linkage between the governor and the push rod is missing. I would like to correspond with an Alamo owner to find out what it looks like. I have 35 engines, some running - some not.'
S. BRUCE GOSS, R.R. #3, Coldwalter, Ontario, Canada LOK 1EO wants you to know: 'The helpful response to a previous letter to G.E.M. has prompted me to write again. I am presently restoring a 1-1/2 HP Number 1, Type A Olds engine. It was in rough shape when I bought it. The water hopper was cracked across the top and down one corner to the bottom. The timing gear was split in half and 12 teeth stripped out of the gear. The pin holding the gear was also broken in half.
I now have a new gear made and the water hopper is being welded and I am about to make the new pin. I would like to know the proper colors and any details about striping, if any. I also wonder if the battery box is supposed to set on the flat crankshaft guard. If so, what are the dimensions of the battery box?
I also have recently acquired a 5 HP Keystone engine made by the Rockwell Manufacturing Co. of West Chester, Pa. I would like any history that is available on this engine, such as years of manufacture, since manufactured, etc.
I hope to have both engines at our annual show in Cookstown on the first weekend in August this year.
MELVIN L. WARNER, RFD #1, Box 288, McConnellsburg, Pa. 17233 would like to know more about his gas engine. He cannot find the name or make, but the serial # is 15109 RPM 600, 3/4 X K. So if anyone can help Melvin - I'm sure he will be happy to hear from you.
PAUL J. CONTINE, JR., 3063 Ridgeview Drive, St. Charles, Missouri 63301 writes: 'I want to thank you and the Publication staff for the fine Gas Engine Magazine; this is the second year that I have had the magazine. I belong to the 111.-MO. Tractor and Engine Club. Now, in the past years, someone might have come up with this same thing I have no way of knowing, but if not, here is what I have done, (see drawing on how to make your own exhaust muffler)
ROBERT MOWEN, Route 4, Jerseyville, Illinois 62052 asks: 'Can you furnish any information on a Buda one cylinder engine, Model 1BD38, Serial No. 51095? Would appreciate it!'
JOSEPH A. MERCER, R. D. 1, Box 110, Hookstown, Pa. 15050 sends this letter to. all: 'I have been receiving the G.E.M. for two years now. Whenever it arrives I drop everything for about three hours and go through the magazine from cover to cover.
I am going to take this opportunity to answer some of the requests in the November & December '75 G.E.M. To William R. Cole East Otis Mass. Remove the inspection plate on the side of your Novo Engine and pour in enough oil so that the connecting rod will dip into the oil at the bottom of the stroke, then replace the cover plate. Too much oil will splash out the crankcase ventilator. The Ignition should be at top dead center or a little before, as long as the engine does not kick backwards.
Also on page 6 of the magazine the man who has trouble with the 2 HP Lauson Engine. You do not mention a condenser on your engine. All these small engines require a condenser, perhaps some one removed it before you got the engine, most any automotive condenser will work. Be sure you have a good one. Connect the short wire to the insulated side of the points and bolt down the case to the frame. In my experience, nine times out of ten a new condenser will be all that is needed.
To Philip De Jarlais, Champlin, Minn. Many thanks for the Information on the Bosch Magneto. I will have to get the armature rewound, it is shorted out.
Tell the fellows that I have many years experience operating old oil field gas engines. I will try to answer any questions if they want to write direct. How many know what a Hot Tube is?'
DOUGLAS DAUTERMAN, Rt. 1, Box 743 B, Durham, California 95938 needs a buddy to write him: 'I eagerly await each issue and enjoy them very much. As old engines are virtually impossible to find in my area, I have taken another related pursuit. I collect drip oilers. I wonder if there has been a short article or any sort of publication devoted entirely to drip oilers. Perhaps some reader can help and would like to correspond. I have an old garden tractor identical to the one on the back page of March-April 1973 issue of G.E.M. Could anyone send information on it and what would be its value?'
J. F. POLLARD, R.R.2, Vankleek Hill, Ontario, Canada shares some thoughts with us: 'Since seeing my letter in G.E.M. Sept.-Oct. 1975, page 20, about my mishap with a 7 HP Canadian Milwaukee engine, I have come across two other similar incidents, although I have had no letters from the G.E.M. readers.
On page 35 of same magazine, at bottom of page, gentleman oiling engine, I cannot tell the make, but something is broken there, needing those big stay bolts and cross bar on hopper???
Then this fall Labor Day weekend at Milton, Ontario Steam-Era, I met a man, Bill Shark, who had a National 6 HP engine which must of been made with the same molds as my Milwaukee and he told me that when he bought this National, the hopper was broken off; also the base broke in two pieces and was patched up with cross bars and stay bolts and had been running like that. Bill had it all welded and painted and running - a very neat job! How it was broken, he did not know.
I must add, Milton, Ontario, just west of Toronto, must be our biggest Antique and Engine Show in Canada. A lot of good machinery there, and we get a lot of you from across the border. I was parked between a car from Missouri and one from New York.'
JOHN H. ALEXANDER, Route 1, Box 199, London, Kentucky 40741, a new member to our GEM Family writes: 'About one year ago I was lucky and obtained a hopper-cooled, igniter fired Nelson Bros. Little Jumbo 1-1/2 HP. Upon disassembly the engine shows little use and fine condition. Would any of your people know of manufacturing dates? Is this engine unusual? I cannot get the Webster Tri-polar igniter to spark? Who or where could I get information on this?' (Make him welcome to our tribe - write him if you can assist him).
Another new one to our group is DOUGLAS D. FISK, 1426 N. Sec. Ave., Wausau, Wisconsin 54401.
I recently ordered the Gas Engine Magazine, and it is very interesting and enjoyable. I am a new comer to the hobby of restoring old engines. These engines were way before my time so I find it very interesting as a hobby.
I was wondering if any of your readers may be able to help me out. I recently acquired a 1-1/2 HP Alpha upright engine. I am told this was sold by DeLaval Company. Many parts are missing and I don't know where to look for parts other than your magazine.
Here are some questions for your readers. What type of a magneto was on this engine? What size is the gas tank supposed to be? What type of cover does it have over the rocker arms? What color was the engine when it was new?
Any information from your readers would be appreciated.
RALPH HENDERSON, R.R. #4, Blenheim, Ontario, Canada NOP 1AO needs some aid: 'I need some help to restore a gas engine manufactured in England. It was made for the Aveling Barford Company of Grantham by the W. H. Dorman Company of Stafford. It is a single cylinder 3 7/8' bore by 4' stroke Type 1 A. B. No. 43317. The cylinder block is bolted to the crankcase and has a stainless steel cylinder liner cast into the block. A tag on it says Listerd process, Van Der Horst, serial no. 11159. It was a basket case when I got it and some parts are missing so any information I could get on it would be greatly appreciated.' (Maybe you ought to write Mickian Mills, 38 Hall Lane, Werington, Peterborough, England - he mentions something about the address of Lister in this column this month - or write the Lister address).
Another England subscriber -ROBERT DONNELLY, Blue Hazel, 14 Hele Road, Kingsteignton, Newton Abbot, Devon, England writes:
I am a new subscriber to your excellent magazine and after receiving only two issues it may seem a bit cheeky to ask for help with an engine, but as you and your readers give a very friendly impression I am sure you will understand my impatience in wriing.
The engine I have has been identified by Mr. R. Hamp, of San Jose, California, through an English magazine, the Stationary Engine Advertiser and he sent me a copy of an early advert for it.
The engine is an Elgin made by the Elgin Gas Motor Co., and trade name the Hafa-Hors. When I bought this engine at an Auto-jumble at Beaulieu for £5 in 1974 it had never been run. I have got it running and have been to several rallys with it but with regards to the starting and running it does not bear out the words in the ad i.e. an ideal ladies engine almost as convenient as an electric motor.
The three main problems I have are firstly what type of 22mm plug to use, I have tried Champion C5 and 44 getting the best results from a 30 year old C5 that had been discarded from a Fordson tractor. Secondly the two stroke fuel to oil mixture won't burn clean and leaves drips of black oil on the muffler even with a 50 to 1 mixture of Shell two stroke oil. The last thing is more to do with missing parts. When I bought this engine the points and cut out switch were the only parts left of the ignition system, and I have used Lucas 12 volt car coil that fitted exactly into the casting and clamp screw provided. To energize the coil with electric power I have used two 6 volt dry lantern batteries.
Mr. Hamp has found 4 other engines the same as this in America but they are all incomplete non runners and he has been telling me to write to you even before I was a subscriber. I have sent a photo copy of a Bates Steel Mule to Mr. Alvin D. Meyer who made an inquiry in your column November/December issue.
Enclosed for your use a photo copy of the Elgin ad and the Bates Model D.
Another member of our G.E.M. Family from England sends this: 'Many thanks for publishing my letter requesting an F-M 2 HP nameplate. I had a letter from a man and was able to buy one from him.
One or two more addresses that might be of use to some readers: STUART, Stuart Turner Ltd. Market Place, Henley-on-Thames, Oxon, R69 2AA, England - LISTER, R. A. Lister & Co. Ltd., Dorslet, Gloucestershire, GL11 4 HS, England - The Stationary Engine Advertiser published monthly by D. W. Edgington, Lodge Wood Farm, Hawkelidge, West-bury, Wilts, England.
I would greatly appreciate any information on Associated engines, method of dating, when the company started, what happened to it, etc. Rest assured, all letters answered.
I am at present restoring a 3 HP Amanco (Associated). Unfortunately, it was converted to H. T. magneto, with a sparking plug, at some stage. I am seeking to find a tall low tension magneto to enable to convert back to the original and complete my restoration.
Funny story now, I used to keep my 2 HP restored F-M. in my lounge alongside the T.V. When we were selling the house a prospective purchaser's wife enquired as follows - 'Does that run the central heating?' They didn't buy the property.'
By the way this letter is from MICKIAN MILLS, 38 Hall Lane, Werington, Peterborough, England.
LAURENCE GRAVES, Route 1, Box 147 A, Suisun City, California 94585 says: 'Each January I attend Farm Machinery Conference at Davis, California. The late F. Hal Higgins also used to attend. This campus is now a full university and many agricultural courses are gone. High school agricultural courses teach according to local conditions. No one place in this state can represent the whole, due to temperature variations. San Diego and Imperial counties are free of frost and can grow avoca-does for salads. Oranges and lemons grow in Southern California, lettuce in Salinis. Sacramento and San Jauquine Valleys raise fruit, nuts, and field crops for 200 miles.
We have seen movies of the gas turbine tractor, the fuel cell tractor. Also shaking peaches, prunes and nuts. We saw a $20,000 4-wheel drive tractor, with air conditioned cab by Wagner Co. John Deere is making them also. The cab protects the driver, even if it rolls upside down! Air driven pruning tools never became accepted by the public.
First saw a cultivator shoe which vibrated up and down. A contractor installing an automatic sprinkler system at local golf course used one to dig trenches 3' wide, to install electric control wires. In several places, this machine cut across a black top caddy cart path like it was soft butter!' (Thanks Lawrence, for bringing us up to date on some of the more modern equipment of working - I know I hadn't heard of these items before now).
SCOTT LARSEN, R.R. #2, Marseilles, Illinois 61341 recently purchased an Empire 1-1/2 HP engine, made by the Empire Cream Separator Company, Bloomfield, New Jersey. He is interested in finding any information regarding original color and any printing or design so he can restore it to the original condition. Any help would be greatly appreciated.
HAROLD ROBERTSON, 365 Park Club Lane, Williamsville, New York 14221 asks: 'Would some of the Gas Engine Boys tell me about or tell me where I can get reliable information on a United gas engine? I have a 1 3/4 HP air-cooled engine, serial number 82647. I know there is some connection between United and the Associated engines, but would like something in print.'
And here's a young fellow looking for help that I thought maybe some of you men could supply - JOHN RICHARDSON, R.R. #4, Portersville Rd., Washington, Indiana 47501 writes: 'I am a student at Washington Junior High School. As a Bicentennial project, my English class is researching Old American Business and other related topics. Could you please send me diagrams, pictures and brochures on old American Tractors? Thank you very much.'
Another interested newcomer has some questions: 'I recently became a subscriber to Gas Engine Magazine and I enjoy it very much, and I have a problem and I'm hoping someone can give me some help. I purchased two Case tractors last year that were in excellent mechanical shape, but just needed paint jobs. After painting, I ran into a problem of where to get the proper decals. Mine are a model 'C' and 'CC'. Also I would like to know if the first two digits of the serial number indicate the year of manufacture? And could someone tell me what was the last year the Model 'C' and 'CC' Cases were built?' If you have the answers, write to GARY TUNKIEICZ, 7514-60th Street, Keno-sha, Wisconsin 53140.
WAYNE S. SPHAR, R. D. 2, Box 280-J, Waynesburg, Pennsylvania 15370 wants you to see this picture of an ad and he states: 'I own this unusual Delco. It is 16 volts. Most popular ones were 32 V and later 110 volts.'
GARY KUPFERSCHMID, R.R. 1, Box 71, Oakville, Iowa 52646 would like to know just when and how many McCormick-Deering 10-20's or John Deere D's were made. (Do you know?)
Hey Fellas! There is a new club forming out in Michigan - anyone interested in old engines and machinery, in the Kalamazoo area? Write DONALD NELSON, 3409 Michael Road, Kalamazoo, Michigan 49004. T'will be known as Kalamazoo Valley Old Engine and Machinery Club. Good luck - may your club put down roots and grow.
RUSSELL R. JOHNSON, Route 1, Box 145, Jordan, Minnesota 55352 would like to hear from someone who knows information on a Phelps gas engine. He has an upright Phelps with a three inch bore and a four inch stroke. It has a holly carburetor, a Model T plug and runs with a Model T coil. He would like to know where it was made and what horsepower it would have.
HUBERT GEPHART, Reynolds, Indiana 47980 is pictured here with two of his prize engines. In front of him is an air-cooled Square Deal engine made by Kenney Mach. Co. of Indianapolis, Indiana. It has a bronze rod, controls of brass and brass oiler pipe. It laid out in the woods for 50 years and most of the bolts heads were eaten away. He has it running now.
In back of Hubert is a 2 cyl. Cushman with a screen tank on it; all original 4 screens are 20' x 22', tank 14' deep, 23' long, 20' wide. Engine has Dixie M2 mag with imp flipper, brass Schebler carb., made at Streator, Illinois. This chain sprocket. It was used on a grain binder in 1915.
Says Hubert: 'Wonder if any one had a Farmer's Friend engine? Most Midwest Farmers will recall the Farmers Friend corn elevator made at Streator, Illinois. This engine is 5 HP, No. 4907, RPM 430, Model DB, G & D Mfg. Co., Streator, Illinois. This engine was in corn crib for 40 years being covered all the time. Has 26' x 2 3/4' flywheel, 14' Frir clutch pulley, Tri Polar Webster mag. Anyone know of one? Let me hear from you?'
R. E. HOOLEY, 16 Alexandre Avenue, North Hykeham, Lincoln, England writes us: 'Readers may be interested to know that I hold all the old records of 1. Ruston-Proctor & Co. Ltd. (1857-1918); 2. Richard Hornsby & Sons Ltd. (1843-1918); 3. Ruston & Hornsby Ltd. (1918 to date). The records include sales registers for steam engines (traction, portable and stationary); rollers (steam and oil-powered); threshers, and internal combustion engines (oil, petrol, and gas). Given the machine number, I can supply sales dates and often details of first customers. I can also supply original transfers (shields, clasps and roundels) in various sizes, and photo copies of instruction books, parts, lists, sales brochures, specs etc.
Conversely, since I am compiling a list of all Ruston-Hornsby products in preservation, I should be very interested to receive news of items from readers.'
From MRS. DENNIS L. SMITH, Box 73, Roaring Spring, Pennsylvania 16673, comes the following -
Must add that our 1975 show was very enjoyable and successful for all involved. This year's show found us with more exhibitors than ever before. They came not only from all over Pennsylvania but Ohio, West Virginia, and Maryland. Our display of gas engines has really grown from previous years. Also thanks to the technical help of Blair Sell of Duncansville we had our Farquhar Saw Mill in operation. Our large hillside was well populated with an array of various gas tractors from the Universal tractor to a fine display of John Deere tractors, with many other makes in between. With the sun shining brightly the entire weekend, our traction engines made a fine display, especially to the school children who came to the show Friday to learn about life in Grandpa and Grandma's day. And not to be slighted was the way Grandma ran her kitchen. Our bake oven was well fired and I must add the hot bread with fresh churned butter and fresh boiled applebutter was a taste not soon to be forgotten.
Each year we of the Morrison Cove Pioneer Power Reunion can see our efforts rewarded in the eyes of a little child as he hears the whistle of a traction engine for the first time or to the sight of one of the older folks saying - 'Gee, I remember when ...' This is the main purpose of all the work that goes into a show - to teach the young ones what yesteryear was like and to kindle a fond memory in the minds of those who knew what yesteryear was like!
TODD RYKER, 45 Hunting Hill Road, Woodbridge, Connecticut 06525 would like to know of any members that could help him as to information on his Foos engine, 8 HP, Type J. He would greatly appreciate hearing from you.
The next five letters will deal with the subject as to why some pulleys had a high center and the belt would seem to ride the center - this was a question asked in the Jan.-Feb. issue by Samuel Nixon, of St. Petersburg, Florida. He seemed to be having quite a time finding anyone to give him an answer. I felt the men that wrote in should all be recognized and perhaps each one adds to the enlightenment of the subject:
From ALLAN CURTIS, Box 191, Arthur, Ontario, Canada NOG 1AO - 'This high center is called a crown of a pulley and that is why a flat belt will ride the center, otherwise it would run from side to side on a flat pulley.'
From FRANK STEPHENS, 75 Burton Ave., Barrie, Ontario, Canada: 'On any flat belt pulley, whether on engine, drive line, or saw manderel, etc. - its purpose is to keep your belt running in the center of the pulley. EX: If your belt starts to veer off under a heavy load, the crown will help hold the belt on and will also pull the belt back in line, especially if it is on a buzz saw. In terms of a buzz saw, if you push your work too hard you can also throw your belt off. If you ease up on your work when belt starts to veer off, it will automatically climb back on. In other terms, without a crown on your pulley your drive belt would run to one side or the other, and you could not possibly keep your belts on without a crown in a pulley.'
From MAHLON SORENSEN, Route 1, Box 88, Makinen, Minnesota 55763: 'The high center on these pulleys is called the crown. As a belt will always work off the sides of the pulley that is closest together when they are not lined up parallel or square. The crown will help keep the belt on, but its main purpose is for to hold the belt on when even a jerk or sudden change in power requirement helps keep belt running true on pulleys that are aligned right for it is impossible to maintain an equal tension in squared pulleys and even a belt has different tensions at times in its width across the fabric, so the crown or high center has a tendency to want to work the belt off to both the outsides, which are smaller diameter, so actually instead of drawing the belt to the high center, it fights to send the belt to both sides of the pulley and in that way it keeps the belt on -1/2 of the belt wants to work off one side, 1/2 to the other.'
From R. O. CASHION, JR., 519 Brewer Drive, Nashville, Tennes-see 37211:
The Crowning or Crowned Pulley is the largest diameter in the middle or face of pulley, the object being to cause the belt to run on the middle of the pulley width, it would appear that the crowning would give to the belt a greater degree of tension at its center than at its edges, it is shown by experiment that if a piece of belt be clamped square across its width at each end and stretched, the center section will stretch the most, and that if the piece be divided along its center lengthwise and both halves again stretched, they will again do so the most in the middle of their width. From this it appears that the crowning serves to produce a tension equal across the pulley width, because it will stretch the belt the most in the midle of its width, where it has the greatest capacity to stretch.
The amount of crowning employed in practice varies from about 3/16 to 3/8 in per foot of width of pulley face, the minimum being employed where the belt requires to be moved or slipped laterally from one pulley to another of equal diameter, or from a fast pulley to a loose pulley or vice versa.
From LEROY R. HAGEY, R. D. 1, Box 429, Haycock Run Road, Kintnersville, Pennsylvania 18930:
A pulley which is slightly higher in the middle of its width exerts the greatest power in retaining the belt from slipping off as well as making it last longer by imparting the greatest tension to the middle or strongest part of the belt, to the relief of the edges or weakest part. So the reason is actually in relation to the strength of the material of which the belt is made, the number of plys and how they are joined. Normally leather belts are built up of leather strips and the best grades are taken from the central part of the hide along the back of the animal. These strips are cemented together with lap joints. It is advisable to use double belts (2 ply) on pulleys 12 inches or larger and triple ply on pulleys 30 inches and larger.
The proper name of the high center pulley is called a crowned pulley. The amount of crowning will differ under the condition it works. The crown should be greater for leather belting than for cotton and also greater for low speeds than for high speeds. Some recommendations are: 1/20 of the width of the pulley in the case of leather belting and 1/150 of the width for cotton belting. Another recommendation would be 1/16 to 1/8 inch per foot width of crown for high speeds and 1/4 inch for low speeds. An important note: The crowning of a pulley tends to keep the belt on only when the belt as a whole does not slip. A slipping belt will run off a crown-face pulley quicker than from a straight faced one.
Another important factor on the ability of a belt to run on center is in lacing or cementing the ends together. The ends must be exactly square across, otherwise the belt will be strained and torn on the tightest side, and thus be liable to run off the pulley at any time.
Just a few more tid-bits on belts. Whenever practicable, belts should be installed so that the slack side is above, and the driving side below the pulleys. If this condition is reversed and the slack side is below, the arc of contact is materially lessened. Belts should also be placed on the pulley with the hair or grain side next to the pulley rims. Also the direction that the lap-joint of a belt should incline relative to the direction of the belt's motion. For a single ply belt, the leading end or point of the lap is on the pulley side. The lap is inclined in this way to prevent the end from opening. Finally, belts connecting parallel shafts tend to run toward that part of the pulley which is largest in diameter, hence pulleys are crowned to keep the belt in the center of the rim. If the shafts are not parallel and the pulleys are cylindrical (not crowned), the belt will run toward the low side of the pulley or the side where the centers of the shafts are closest.
To summarize, the reason a belt will ride in the center of a crowned pulley is that when the belt is properly manufactured, ends joined correctly, number of thicknesses for pulley size and speed, the high point of the crown will have the greatest tension (at the strongest part of the belt) and the weaker sides will be under less tension and equalize themselves on either side of the crown.
As I mentioned in the beginning there are many other factors to be considered, from the selecting of materials, to manufacture of the belt, type of bonding cement, length of belt joints, thickness and width of belts, belt speed and the horsepower to be transmitted. I hope I haven't confused the issue for you. I enjoy the 'Gas Engine Magazine' and look for every tid-bit that others have written about. I am a newcomer to engine collecting and have a modest collection to tinker with along with some farm machinery to load them up. I am retired now, but spent my working years with machinery so that the engines are now a hobby which formerly was work. If you have a few minutes drop me a line, maybe you will receive an entirely different theory of the crowned pulley. I'd appreciate hearing about it. (Well Leroy, here are the other letters also - Mr. Nixon certainly had a lot of help on this inquiry. I felt the answers all needed to be printed).
Well, our son Tommy just got his 50 packs of seeds to sell and dream of what he will select with the accomplishment - but Spring can't be far away when seeds are on the counters - and we have a wedding coming up in July as our daughter, Keli will be married to Michael Gaffney - and right now we are redoing our kitchen - out of necessity - we also celebrated yesterday as our son, Don, paid his final payment on his car - now it really belongs to him - so you can see - many interesting, exciting events going on - oh yes, grandson Ryan, just lost his tooth, the first one - that's a big deal too you know. Father and I are here amidst it all - just like a three ring circus - Praise the Lord! We are very Blessed!
And now it's time to close and wish you all a splendid Spring -Remember - Learn as if you were to live forever; live as if you were to die tomorrow. - He does much who does a little well. - Without prayer no work is well begun. - and to finish - This world that we're a livin' in - is mighty hard to beat; you get a thorn with every rose, - But ain't the roses sweet??
Pictured is a Briggs & Stratton F.T. engine 7786, which has two overhead rocker arms and valves. The engine has been restored.
i've enclosed a picture of an engine I purchased this past summer that had been used on a saw rig years ago up near Hurley, Wisconsin. It is a 5 HP Simple mfg.'d by the Simple Gas Engine Co. of Menaska, Wisconsin. Serial #1153.
Overall engine dimensions are: 18' High - 18' Wide - 26' Long. Weight approx. 300 lbs.
It is a 2 cycle engine having a 4-1/2' bore by 6' stroke that really has a bark when it runs.
Contrary to its name, it took two months and a lot of work on the part of my brother, Bob, to get this engine running. Even now, we're not sure which way it's going to run when it starts.
Would sure be interested in hearing from anyone else who has any information on the 'Simple' engine.
Courtesy of Paul Borchardt, 137 North Center Street, Naperville, Illinois 60540.