2020. 3. 3. 09:24ㆍ카테고리 없음
This is an evolving type study from Tom Cap, building on the research of George Langford and Randy Roeder.Type StudyThis a rough guide to design and production changes found on the Millers Falls No.2 hand drill.The table below contains a lot of detail that will mostly be of interest to tool collectors.If you want to answer a simple question like 'What do I have?' Or 'Which drill would be best to use?' , here is some quick info:The vast majority of the No.2 (including 2A 2-A, 2-AG, 2B, etc.) drills were manufactured after World War 1.
Most of the drills found today in good usable condition were made after WW2 (types 2.20 and later in the table below). These later drills have stronger parts than the early types and typically are found with much less wear.
Hand drills such as the No.2 and its Craftsman cousin were widely sold between about 1945-67 and some saw little use due to the rapidly increasing popularity of consumer-grade power tools after WW2.If you plan to use the tool, the most important consideration is condition. Look for one with little wear, rust or damage. The drive gear and spindle were both carefully fit to the frame when new. Find a tool without any wiggle in the rotating parts. Verify that the chuck operates smoothly and the chuck jaws are aligned. That's it.All of these later drills have more or less the same mature design, and are more practical than any older No.2 drill. Do not worry about whether the frame is iron or die-cast alloy, or whether the tool has two pinion gears or one pinion and a roller guide.
The later drills (from about types 2.20 or 2.21 in the table) will have two pinions, a stronger drive gear and more durable crank knobs. After about 1968, the Ryther-patent protected-spring chuck was replaced with a generic design similar to the chucks found on most other brands, including all Goodell-Pratt drills and many Stanley models.
Unless you (or a previous owner) are careless when chucking bits (e.g. Round shank drills), you should not worry about it much. The older protected-spring chucks can usually be retrofit onto the later hand drills but it's more likely you will find an entire hand drill with a Ryther chuck before you come across a good spare chuck.If you are trying to identify which type or estimate how old your drill is, remember that later types are much more common than earlier ones. It may be faster to skip to the bottom of the table and work your way up.
Drills with one pinion date to approximately before WW2. The Model 2B has a solid main handle made from domestic hardwood. All other models in the No.2 family have a hollow storage handle with a wood cap that screws off/on.For selected catalog info about the various models, see this page in Randy Roeder's history of Millers Falls Co., oldtoolheaven.com.With the earlier drills, do not be surprised or disappointed if you find a tool that does not exactly match any type described here.The designation of types derives mostly from observations and comparisons of actual tools but can require a decision or two. The types here are not arbitrary but may also not be a complete guide - the map is not the territory.The type descriptions in the table below generally include only the changes from the previous type. Blank entries indicate either no change from previous or no information available.As a convenience and cross-reference, George Langford's type names are included for those who may be familiar with them. There is not a 1:1 correspondence between the two lists of types, and I have not included all of the earliest or latest types on George's list.Because there are so many examples of the No.2 extant, and many of these tools may have been repaired or modified, this study is based as much as possible on multiple examples of each type that appear to have all original parts (e.g.
Tools in original boxes).Occasionally, unmodified original tools may have attributes of two consecutive types. This is most probable in three ranges in this type study:First, from types 2.1 to 2.10, where design changes were frequent and a smaller population of quality examples results in a less complete portrait of the era. There are also some minor differences which may be due to foundry or manufacturing variances rather than intentional design changes.
Vintage Millers Falls Tools
(For example, George Langford's types K1 and K2 differ only in the arched shape of the handle end of the frame.) The drills from this time period are most likely not completely typed. New examples often appear to be a mix of the listed 'types'.Second, there is some overlap between types 2.11 and 2.12 (the 'Star logo' types), and the designations includes some arbitrary decisions. Examples of both 'types' are commonly found with a mix of features and parts that were used throughout the ca.1910 to 1921 era when these tools were produced. Perhaps the Star logo drills could be divided into as many as six types but most of the changes were minor and so are bundled together into just two basically similar types. Read the descriptions for more detail.Please also remember that most hand drills from the 2.1 to 2.12 period were heavily used and are typically found in Good- or worse condition, sometimes with obvious repairs and replaced parts. Finding an older No.2 with a mix of parts from several different drills is not uncommon.Third, from types 2.17 to 2.19, which span the period where a second pinion replaces the gear roller guide, and the finishes and handle materials varied several times due to presumed unavailability. The US government restricted and controlled the usage of some materials, including nickel, during WW2.
Many drills manufactured without nickel plating have a single pinion with a drive gear rim guide roller even though Millers Falls catalogs introduced a second pinion in 1938. These drills with guide rollers and black finishes may have been produced in the 1930s - perhaps MF substituted oxide or Parkerized finishes for nickel plating to reduce costs during the Great Depression. This also appears to be the period when MF exhausted their supply of cocobolo and substituted tigerwood ( Goncalo alves sp.).This type study is inevitably incomplete, especially after type 2.18, as I am more interested in the earlier tools.Millers Falls' model designations are a bit confusing after about type 2.19 (e.g. No.2, No.2-A No.2A, No.2-AG No.2-01).For more information about the later versions of the No.2 made by Millers Falls or SoGard, SoJo and Brookstone versions, see George Langford's page at George's Basement.There is one known type of No.2 built with 2 pinions and a roller gear guide (LRRCW).
Millers Falls Tools Electric
George Langford lists this as type 'DC'. It is referred to as DC here also, as it does not readily fit into the sequence of numbered types. The DC may have never been a regular production drill but likely dates to around 1930, more or less. It is most similar to types 2.13 and 2.14 but has the 16-tooth pinion gear, not otherwise found before type 2.16, and the second (idler) pinion first used in type 2.18.
This was the first departure from the 17-tooth pinion gear since the introduction of the No.2 in the 1870s, and results in the highest gear ratio of any No.2, unique to the DC. I have seen only 2 examples of the DC - and one of those likely does not have the drive gear it was built with.
See George Langford's Type DC page at George's Basement'.Several hand drills have been found that have that are similar to the earliest types listed in the table below. Most of these drills are unique. Some may be early tools made by MF. Some may have been made by other toolmakers or pattern/machine shops.