ADDENDUM The Second Edition - Gear Technology
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• ADDENDUM The Second Edition ... G,earinglfor Munchkins Gene Kasten. president of Repair Parts. Inc .. of Rockford, IL. is the proud owner of a miniature Barber- Colman hobber, the only one of its kind in the world; The machine. a replica of the old B-C "A" machine, was buill between 1933 and 194,]by W. W. Dick- over, who devoted 2,640 hours of his pare time to the project. The machine. made from ca t alu- minum, rainless steel and bronze, was built to scale from the original draw- ings of the fun-sized machine. Driven by a lin hp motor, the miniature "A" weighs 19 lbs, ~t's l3 1 /2" long. 6" wide and 11.1/2" high. The maxi- mum travel of the hob slide is 2". and the work size is 21J4" diameter x 2" face x 40 DP or finer. The machine will cut spur and helical gears and spline shafts. The 8-year project was something of a hobbyist'S tour de force. Dick- over. a toolmaker and later ;:1 salesman for Barber-Colman. reduced the draw- ing . to [16th size himself and made everyone of the 642 part, with the Let There Be Ligbtbulb Jokes If you thought these were as passe as Madonna. you're wrong. Some of the latest I circulating on the Internet, according to Wired magazine, the hot chronicler of , cybernews, 'include: Q: How many q/c te tel's does il take to change a ligbtbulb'! A: We just noticed tire mom was dark; we don't actllollyfi't: tire problem, Q: How many shipping department perSi)nneli does il take to change a lighlbull>? A: We con change the Ug/II/mlh ill seven fa 1('11 working days, bu: if yo II call before 2 [I.m. and pay all extra $15. IoI'C call gel' the bulb changed overnight. exception of the castings and the gears, in his basement workshop. He also made his own cutting tool to pro- duce parts for the machine. The bobber actually works. Dick- over cui a 48-pitch. 48-lootl1 gear with adjacent tooth spacing that checked to within .0003" and non-adjacent spac- ing to within .0004". The machine is on display at Repair Parts, Inc .. Call 815-968-4499 for mereinfcrrnatien. M'ark This P,lace U.S. Patent No. 5.,3H ,835 was issued to Horace Knowles for hi Placelvlark, which the inventor say is state-of-the- art in bookmarks. For those of us who havetrouble remembering where we '_0_ 11 'to (lEAR 'TeCHNOLOGY left the book, much less where on the page we . topped reading. the Place- Mark ha "Odd" printed on one side and "Even" on the other, The lOP third of each side is a scale marked "top 1/4, 1/2, 3/4." Thebookmark is inserted so that it indicates to the memory- impaired reader whether to start read- ing on the odd or even numbered page and how far down the page to begin. Knowles predicts that the PlaceMark, "has the potential of changing forever the way m.any millions of readers marktheir place in a book." Mlaybe. Solutions H you're still struggling with the answer to our "Puzzling Scale ." relax. Try the following algebraic solution. Let: b=weight of a bottle; g""weight of a glass; peweight of a pitcher; s;;;;;;weigl1t of a aucer, Each weight now can be represented by an equauoa, (I) b+g""p; (2) b""g+s; (3) 21>"'3s. We want to find b=:?g, Trans- formequation (3) to (2/3)p=s. Replace (2/3)p for s in equation (2), and we get b=g+(2/3)p. Can this equation (4), Simplify this equation and solve for b in term of g,. giving b=5g. Therefore, 5 glas es balance I. ooul.e.O
Transcript of ADDENDUM The Second Edition - Gear Technology
• ADDENDUM
The Second Edition ...
G,earinglfor MunchkinsGene Kasten. president of Repair
Parts. Inc .. of Rockford, IL. is theproud owner of a miniature Barber-Colman hobber, the only one of itskind in the world; The machine. a replicaof the old B-C "A" machine, was buillbetween 1933 and 194,]by W. W. Dick-over, who devoted 2,640 hours of hispare time to the project.
The machine. made from ca t alu-minum, rainless steel and bronze, wasbuilt to scale from the original draw-ings of the fun-sized machine. Drivenby a lin hp motor, the miniature "A"
weighs 19 lbs, ~t'sl31/2" long. 6"wide and 11.1/2"high. The maxi-mum travel of thehob slide is 2".and the work size
is 21J4" diameter x 2" face x 40 DP orfiner. The machine will cut spur andhelical gears and spline shafts.
The 8-year project was somethingof a hobbyist'S tour de force. Dick-over. a toolmaker and later ;:1 salesmanfor Barber-Colman. reduced the draw-ing . to [16th size himself and madeeveryone of the 642 part, with the
Let There Be Ligbtbulb Jokes
If you thought these were as passe as Madonna. you're wrong. Some of the latestI circulating on the Internet, according to Wired magazine, the hot chronicler of, cybernews, 'include:
Q: How many q/c te tel's does il take to change a ligbtbulb'!A: We just noticed tire mom was dark; we don't actllollyfi't: tire problem,
Q: How many shipping department perSi)nneli does il take to change a lighlbull>?A: We con change the Ug/II/mlh ill seven fa 1('11 working days, bu: if yo II call before2 [I.m. and pay all extra $15. IoI'Ccall gel' the bulb changed overnight.
exception of the castings and thegears, in his basement workshop. Healso made his own cutting tool to pro-duce parts for the machine.
The bobber actually works. Dick-over cui a 48-pitch. 48-lootl1 gear withadjacent tooth spacing that checked towithin .0003" and non-adjacent spac-ing to within .0004".
The machine is on display atRepair Parts, Inc ..Call 815-968-4499for mereinfcrrnatien.
M'ark This P,laceU.S. Patent No. 5.,3H ,835 was issuedto Horace Knowles for hi Placelvlark,which the inventor say is state-of-the-art in bookmarks. For those of us whohavetrouble remembering where we
'_0_11
'to (lEAR 'TeCHNOLOGY
left the book, much less where on thepage we . topped reading. the Place-Mark ha "Odd" printed on one sideand "Even" on the other, The lOP thirdof each side is a scale marked "top 1/4,1/2, 3/4." Thebookmark is inserted sothat it indicates to the memory-impaired reader whether to start read-ing on the odd or even numbered pageand how far down the page to begin.Knowles predicts that the PlaceMark,"has the potential of changing foreverthe way m.any millions of readersmarktheir place in a book." Mlaybe.
SolutionsH you're still struggling with theanswer to our "Puzzling Scale ."relax. Try the following algebraicsolution. Let: b=weight of a bottle;g""weight of a glass; peweight of apitcher; s;;;;;;weigl1tof a aucer, Eachweight now can be represented by anequauoa, (I) b+g""p; (2) b""g+s; (3)21>"'3s. We want to find b=:?g, Trans-formequation (3) to (2/3)p=s. Replace(2/3)p for s in equation (2), and we getb=g+(2/3)p. Can this equation (4),Simplify this equation and solve for bin term of g,. giving b=5g. Therefore,5 glas es balance I. ooul.e.O
