Clock pinion cutters Centre Pinion is designed to be more than long enough for most Longcase clocks; Standard Pinion is designed to fit the vast majority of antique clocks; See photo for full dimensions (dimensions are the same for each leaf version) 6, 7 or 8 leaf; Made in UK The 260 teeth are running into a 10-leaf pinion. Clock Parts > Misc. Cutters are made from […] Sep 27, 2004 · Clock wheels are cycloidal. Pinions should never be cut dry. Arlington Books, 1988. 0. Travel in the X, Y and Z planes are 4", 3/8" and 2" respectively. This is the ‘Intermediate Wheel’ which is the driving force. The addendum allowance is unchanged. 00 exc VAT; Fine Tooth Equal Angle 45 Degree £ 30. Gvasale listed the suppliers for cutters (PP Thornton from England sells directly. The single phase mains motor has had a counter shaft fitted to increase the number of cutting speed options. Jul 8, 2021 · 6 Thornton wheel cutters, M1. Various pinions in the uncut and cut state ready for finishing. Making a mandrel to hold the completed gear cutters for cutting clock wheels. For cutting carbon steel pinions with high speed steel cutters: Cutter diameter 14mm 430-500 rpm Cutter diameter 20mm 300-350 rpm Cutter diameter 24mm 250-290 rpm Cutter diameter 26mm 230-270 rpm A copious stream of cutting oil should be used to keep the cutter cool and remove the chips. The quality of this material ranges from vaguely plausible to moronic. In Wild's book there are several useful tables and all the calculations necessary for you to create Jerry's cutter to a specific module. Though they have the same module, different cutters are used to make them. 10 – £ 39. These cutters can be re sharpened without loss Wheel & Pinion Cutting. 35w; 1 Thornton 60 degree ratchet, 1 5e recoil. As Swiss Standard NHS 56702 except for range 0. Malcolm Wild, Wheel and Pinion Cutting in Horology, Crownwood Press 2001. 50 – £ 78. ANTIQUE GERMAN & AUSTRIAN CLOCKS John Wardle Pinion Blanks are manufactured from EN8 DM, free cutting medium carbon steel. 05 module smaller than calculated. Minimum diameter of 6 leaf pinion cut 3. This is a great book. JK’s means and method described herein will be an option for you Finished new pinion above and rusted original pinion below : This series shows the making of a clock pinion for a very early Smith's fusee marine lever bulkhead clock. . Specifications of Cutters. Capable of cutting steel gears, the unit may be used to cut clock wheels and pinions, mill keyways, slots, flats, and to drill cross holes. We can supply Horological Wheel & pinion cutters in cycloidal form to British Standard 978 part 2. 25 exc VAT; Music Box Worm Wheel Cutter £ 68. J. Wild has recently published a full length book on this topic which I am anxious to read. This video covers: Explanation of the radial flank angle of a cycloid tooth. Wheels and pinions are carefully cut to match the period of the clock, the material and the style of existing wheels. e one for 7 leaf, one for 8 leaf etc. Round Bottom Cutter from 0. 20mm wheel teeth such that wheel and pinion teeth proportions vary tremendously from one clockmaker to another. British Standard 978 part 2 made by P. This 2-hour video, made in the W. 00 – £ 90. For cutting pinions for old work with thicker leaves, use cutter 0. Horological Wheel & Pinion cutters in cycloidal form to . 100 assorted small wheel cutters. 2 for Short Form Cutters. Various lathe setups for making needed tooling. Pinions can be quickly and accurately cut in even the toughest materials, with or without coolant. Jul 5, 2018 · I used all the info from Jerry plus reading J. If you are using cut pinions (not lantern) you will need a cutter for each pinion i. These machines can produce the blanks for wheels and pinions which are then cut later in other machines as well as pins, screws, canons etc. Dead Beat Escape Cutter £ 58. New centre pinion made for Fusee and wheel fitted: New pinion made for Longcase, old wheel refitted We can cut most clock wheels and pinions, including:- Escape wheels both recoil and deadbeat, ratchet wheels, and count wheels. Chapters include: Pinions and pinion wire; Cutting machines; Attachments; Theory; Wheel cutting; Pinion cutting; Cutters; Mounting; Finishing and replacing worn pivots; Making the rack and To cut the teeth to make gears one needs: 1) A method of firmly holding the blank to be cut 2) A method of indexing the blank (ie. He started his own company manufacturing clock makers' tools and restoring antique clocks in 1977. Wheels can also be made using cast brass to ensure that not only the tooth form matches but also the type and colour of the material used. Wheel / Pinion Cutter: IAN T COBB. The blanks are designed to be more than long enough for most Longcase clocks. The same process as is used in the previous section on profile turning. 0 are As Swiss Standard NHS 56704. Clock Items > Pinion & Tooth Cutters: P1222 Pinion Wire Assort (24 pieces) $19. Over 500 black and white photos and line drawings. Please note that we do not supply wheels or pinions as a separate item and that these are only made for clients' Clocks that we restore ourselves. 00 exc VAT; Wheel Cutter £ 75. 95w, M0. Most watch and clock repair books contain advice on wheel cutting and, more rarely, on pinion cutting. 0w, M0. When it comes to cutting wheels and pinions for repair work, or for the trade, one of everything is best. His next video takes us into heat treating the clock pinion cutter and using it to cut a pinion. I think they have a web site). It is said that the taper is different. Most are made to give square bottoms to the teeth, which is ideal for restoration work. 50 – £ 81. This clock required extensive restoration including grinding new pallets, cutting a new escape wheel and extensive repivoting. Smith workshop, explains in details the methods for calculating clock wheels and pinions using the wheel cutter module, M. 2 All this to say, that when one encounters such an old wheel, modern day cutters may not be a resource as a cutter and one may need to make a custom cutter. The 8-leaf pinion is driving 144 teeth into a 60-leaf pinion which is the escape wheel. Motorised Countershaft. if the wheel will have 40 teeth you will need to be able to turn the blank 1/40th of it's circumference after each cut. The profiles are made in accordance with BS978 Part 2 NHS56702/3 and have square bottoms, also NHS 56704 with round bottoms. 20 exc VAT; Radiused Tooth Rachet Cutter £ 58. A . We cut our own wheels for Clocks that we fully restore. These yield the circular pitch, the wheel blank OD, the lantern pinion pitch circle diameter and the pinion pin diameters. Cutters are made from High Speed Steel. 50 exc VAT; Pinion Cutter £ 72. WHEEL & PINION CUTTERS . P. Wild's "Clock Wheel and Pinion Cutting" found here. com . Making clock gear cutters part 1 is a is a great introduction into the fascinating field of horological gear cutting. 7w, M0. 00 Page 1 of 1 CLOCKS. Thornton (Successors) Ltd. 20 exc VAT; Straight Tooth Clocks from the 17th and 18th centuries generally have a tooth shape which does not match modern proprietary cutters. Each cutter will have the number of the module on it. PLEASE PHONE P P THORNTON DIRECT. 2 to 1. 9w, M0. Comprised of two hinged cast iron plates, the top plate carries the motor and countershaft whilst the bottom plate is secured to the lathe's machined aluminium base unit. How to arrive at this angle. Quality Horological Pinion Cutters in cycloidal form to British Standard 978 part 2. RECOMMENDED CUTTING SPEEDS: For cutting carbon steel pinions with high speed steel cutters: Cutter diameter 14 mm 430-500 rpm Cutter diameter 20 mm 300-350 rpm Cutter diameter 24 mm 250-290 rpm An excellent guide on equipment and how to use it. Explains different types of multi tooth clock gear cutters and clock pinion cutters. This is only a pamphlet of 46 pages. Covers early methods of wheel cutting, theory, practical instruction and detailed info on equipment. But at $150 each for Thorntons' best, it can be painful. Quality Horological Wheel Cutters in cycloidal form to British Standard 978 part 2. If you enjoyed this video please go to Williams YouTube channel at Fabricating multi tooth cycloidal cutters for clocks, Part 5 "polishing & cutting the cutter teeth" and post a comment, like and Subscribe to his rapidly growing YouTube channel. As Swiss Standard NHS 56703 except for 10 Leaves. 3) A cutter and a method of holding the cutter In the foreground the bars are fed through and the multiple tools either side of the collet in the centre then cut the material. The fusee drive will give me 14 revs of 260 teeth. 0N 01295 279060 or website https://ppthornton. Update: I just got my copy. 85w, M0. Malcolm Wild, Clock Wheel and Pinion Cutting. Dec 4, 2020 · It is easier on all if we can cut 6,7,& 8 leaf pinions for our work. For cutting pinions on old clocks with thicker leaves use cutter 0,05 module smaller than the calculated one. Small fly cutting holder; The unit is mounted on the Chronos wooden case. The design accepts your cutters up to Ø35mm on a standard Ø7mm bore. R. Making Clock Wheel Cutters part 3. Mobilmet 745 or similar. The gear and the pinion have different numbers of teeth, so the angle between each tooth will be different. In this event, a cutter to precisely match the tooth shape can be custom made. Deadbeat escape wheel ready for crossing out and polishing. If that is running into a 10-leaf pinion, then that is driving 100 teeth into an 8-leaf pinion. The cutters listed in the chart below are only available in High Speed Steel. In the third video of the multi-video series on making clock wheel cutters William Porter continues his demonstration on making clock wheel cutters for cutting cycloidal clock pinions and clock wheels. 5 to 1. See the next entry: J. 8 module cutter will cut all numbers of wheel teeth except pinions. We even cut moon disks for longcase dials. 0 and Round Bottom 0. No size below 0. M. 5 cutters will give you a ticking clock better than limiting yourself to just 3. So far, I've found very few good discussions of gear geometry and manufacturing in American horological literature published in this century. Jul 23, 2001 · J Malcolm Wild is a Fellow of the British Horological Institute. In 2021 he was awarded the Barrett Silver medal by the British Horological Institute for his book, Wheel and Pinion Cutting in Horology. rmus vpgs itvyicn zfv bkplam ltligkj dwttt uxwt kxmhg hexubx dsgbzbuo wvod tcd sdool ykicj

Clock pinion cutters. Over 500 black and white photos and line drawings.