The Taffrail Ship Log (Wiki) is the way ships determined their speed. The device is similar to a car's odometer (Wiki). By making a distance measurement for a known length of time the speed can be determined. Most of these ship's logs have a maximum distance reading of 100 miles and so are not indented to be used to actually measure distance traveled like is done with the car odometer.
There are a number of internet web pages saying Thomas Savery (Wiki) invented an odometer for ships in the 1600s. But I haven't found any details.
I'm looking into instruments to measure air flow made by Alnor, aka: Illinois Testing Laboratories. One of the eBay lots included a Taylor Tycos 3132 Biram Anemometer that works the same way as a ship's log. That's to say it has a dial face with a number of pointers that record total feet of air movement. By running the test for one minute the dial face translated to Feet Per Minute. This is exactly the same way the ship's log works, i.e. if run for an hour the log display would be the ship's speed in Knots (Wiki) since the log records Nautical Miles.
Currently Wind Speed is on the Weather web page but my move.
Walker & Sons made a number of different models.
Big Ship Speeds
0 to 100
0 to 10
Cherub Big Ship Speeds 0 to 100
0 to 10
0 to 1
K.D.O & K.D.S.
0 to 100
0 to 10
0 to 1
Yacht (Wiki) 0 to 100
0 to 10
0.1 Amp 40 Ohms
0 to 100 0 to 1
0 to 1000
an ad from November 1951 Motor Boating:
"A complete set for an "outrigger pattern" log should also have a pair of shoe plates in the box; these you screw to the rail on the port and starboard quarters. Theoretically you should tow the log from the lee side, but I don't bother; having an offset prop to port I always stream the log to starboard, for very obvious reasons!
You should also find a length of line and a weight for the line - a little bronze torpedo with a set screw in it, which you screw to the line three feet ahead of the fish. If the line is missing or rotten you can use any small diameter hard braided line - 100ft is the right length.
Keep the recording head swimming in oil.
The official way to hand the log is to grasp the line, unhook it, and pay out the end with the hook on as you haul in the fish, then haul in the hook again; this stops it kinking.
In a flat calm, haul the log fish on board, do so also when you heave to. Omitting these precautions will eventually lead to wrapping the log line round the prop - everybody does this once!
Stream the log when "taking your departure" at the start of a passage."
from Andrew @ WoodenBoat
The register is supported on a rope.
Note ring with eye for support rope.
This would allow slinging the register between a couple of ropes.
The input shaft of the register is tight up against the left wall.
When received the parts were in random positions in the box and packed with snake type brown paper. But there's a specific way the box should be packed.
See Fig 1 Storage Box below.
1. This block has a hole to hold the spinner. In order to get the spinner to go deep enough into the hole you need to turn it until if finally seats.
2. When the spinner is properly seated in block (1) the tail end (2) will sit on the notch. Now when the storage box lid is closed the trapping block (3), which has come loose and needs to be glued back, will trap the spinner.
4. There is a small (1/2 x 1/2 x 3") block that should be glued to the front wall in a vertical position. Note sure what it does.
5. There is a block inside the front wall that has a cylindrical cutout that matches the diameter of the register. In the photo above of the Sling pattern unit you can see a leather belt holding the register into this block. This needs some improvement: (a) the wheel end of the register is not sitting on the floor of the box, so it needs a spacer or maybe the block is installed upside down? Also the input shaft of the register is not tight up against the left wall so maybe a block with a hole to support the shaft should be there?
6. There is a block on the floor of the box with a cylindrical cutout. Not yet sure why?
Fig 1 Storage Box
Fig 2 Dial
0 to 100, 0 to 10.
Excelsior V Log
Fig 3 Dial side view. Note screw at right locking flywheel shroud.
Fig 4 Rope rigging
Short: maybe 3 feet, Long: maybe 50 to 100 feet?
Rigging (Wiki) has to do with using tension members (rope, cables, chains, shrouds and stays . . .) to make connections. In this case it's to make up a short and long rope to connect the rotator and dial.
Rigging Marlinspike (Wiki) Pocket Knife
It's handy when working with rope (Wiki) and rope splicing (Wiki). Particularity in the latter when you want to feed an end back into the body of the rope and need a hole.
The above are diffeent topics from tying knots (Wiki).
38634 Ship Implement (Imporved Marline-Spike) , Albin Warth,1863-05-19, 57/23 -
92296 Marline Spike, Frederick Fischer, July 6, 1869, 57/23 -
299305 Needle, John W. Weed, 1884-05-27, 57/23; 606/225; 223/102 -
563155 Marlinespike, Charles H. Fulson, James M. Doyle, June 30, 1896, 57/23 -
961201 Splicing device, August F Altheide, 1910-06-14, 57/23; 24/40 -
989378 Splicing needle, John D Martin, 1911-04-11, 57/23 -
1293453 Rope splicing fid, Arthur Jacobson, Guy N Garland, 1919-02-04, 57/23 -
Animated Knots -
Samson: How to Splice Rope -
New England Ropes
2503507 Marlinespike, Otto Olsen, Apr 11, 1950, 57/23 -
D149901 Marlinespike, Otto Olsen, June 8, 1948, D8/14 D8/393 D8/47 57/23 -
4512051 Handtool, Arthur S. C. Magan, 1985-04-23, 7/128 - includes marlinspike
647776 Ship's Log, Thomas Ferdinand Walker, Thomas Sydney Walker, 1900-04-17, 73/185 -
701651 Electrical Ship's Log Apparatus, Thomas Ferdinand Walker, Thomas Sydney Walker,1902-06-03, 73/185; 377/19 -
720508 Electrical Ship's Log Apparatus, Thomas Ferdinand Walker, Thomas Sydney Walker, 1903-02-10, 200/19.26 -
1008225 Electrical Ship Log Apparatus, Thomas Ferdinand Walker, Thomas Sydney Walker,1911-11-07, 200/19.18 -
1019566 Ship's Log Apparatus, Thomas Sydney Walker, 1912-03-05, 73/185 -
1451602 Ship's Log, Walker Thomas Sydney, Walker Philip Jeffery, 1923-04-10, 73/185; 74/385 -
1609229 Ship Log, Walker Thomas Sydney, Walker Jeffery, 1926-11-30, 73/187 -
D110462 Taffrail Log Spinner, Charles.E. Ellicott Jr. July 12, 1938, -
The pedometer (Wiki) counts steps taken by a walking person and displays them either directly in miles or just a count.
Fig 1 K&R Ultrak 210(48030)
Fig 2 K&R Ultrak 210(48030)
Zero black knob on back (quarter as screwdriver)
Red/White color on face of weight
Stride adjustment (red slider) restricts weight movement.
If stride over adjusted weight does not move!
0 to 12 Miles in 1/4 mile ticks.
Fig 3 Dial at bottom.
See A.P. Co. patents: 694652, 770644
5914 Odometer, William Oldroyd, Nov 14, 1848, 235/95B; 235/96; 235/95R - cam (C) in hub causes back and forth motion parallel to wagon wheel axle.
? RoadOMeter (Wiki), William Clayton (Wiki), Orson Pratt (Wiki), 1847, - Wagon wheel counter
193224 Pedometer, B.S. Church, 1877-07-17, 235/105 - Tiffany & Co. - oldest patent in class 235/105.
210096 Pedometer, B.S. Church,1895-11-19, 235/105 - Tiffany & Co. -
255004 Cyclometer, J. J. Morton, 1882-03-14, 235/95R; 235/96 -
427306 Device for Measuring Distances, H. Emken, May 6, 1890, 235/105 - " for measuring distances traveled by horsemen; and among the objects in view are to provide an automatic register designed to be Strapped to the body of a rider and be operated by the jolting or movement of the animal and to register the number of steps taken by him, which, when compared with the average length of his step as caused by the gait he travels, will accurately render the number of miles traveled."
537824 Cyclometer, W.W. Hastings, Apr 23, 1895, 235/95R; 235/140; 235/111 -
New York Standard Watch Co.
537896 Cyclometer, H.A. Loew, 1895-04-23, 235/95R 235/106 235/96 - New York Standard Watch Co -
548482 Cyclometer (Wiki), C.H. Veeder, Oct 22, 1895, 235/95R; 235/117R; 235/139R - mounts to the hub of bicycle wheel. (ad at: RFD: Marketing to a Rural Audience) Also see Veeder Root Counter
676519 Register, C.H. Veeder, Veeder Mfg Co, June 18, 1901 Veeder Mfg Co - total & re-settable trip counters
694652 Pedometer, Edmond Kuhn, American Pedometer Co., (A.P. Co) 1902-03-04, 235/105 -
709313 Surveying instrument, Thomas Tapley Helenus Ferguson, 1902-09-16, 346/8; 235/105; 346/100; 33/775; 346/25; 346/104 - shoulder strap pedometer
718792 Pedometer, Wilson E. Porter, 1903-01-20, 235/105 - New Haven
738482 Pedometer, Wilson E. Porter, 1903-09-08, 235/105 - New Haven
765992 Pedometer, Wilson E. Porter, 1904-07-26, 235/105 -
Patents by Wilson E. Porter
641888 Stem winding watch, Wilson E. Porter, New Haven Clock Co, 1900-01-23, -
641889 Stem winding watch, Wilson E. Porter, New Haven Clock Co, 1900-01-23, -
687782 Alarm Clock, Wilson E. Porter, New Haven Clock Co, 1901-12-03, -
737474 Stem winding watch, 1903-08-25
793320 Stop Watch, Wilson E. Porter, New Haven Clock Co, 1905-06-27, -
1149683 Lever or marine strike clock movement, Wilson E. Porter, New Haven Clock Co, 1915-08-10
770644 Pedometer, E Kuhn, American Pedometer Co., (A.P. Co) (E. & G. Bunzl), 1904-09-20, 235/105 - improved stride adj.
1003623 Odometer (Wiki), Kendree Littlejohn, 1911-09-19, 235/95B; 235/105 -
1010654 Cyclometer, Albert F Madden, 1911-12-05, 235/95C; 235/96 -
3598309 Hubodometer with resettable signal, Charles H Engler, Robert Fulvio, Engler Inst Co, 1971-08-10, 235/95B; 116/62.1; 116/285; 235/96-
PRC68, Alphanumeric Index of Web pages, Contact, Products for Sale