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Hart's first inversor, also known as Hart's W-frame, is based on an antiparallelogram.The addition of fixed points and a driving arm make it a 6-bar linkage. It can be used to convert rotary motion to a perfect straight line by fixing a point on one short link and driving a point on another link in a circular arc.
The simplest solutions are Hart's W-frame – which use 6-bars – and the Quadruplanar inversors – Sylvester-Kempe and Kumara-Kampling, which also use 6-bars. Sarrus linkage (1853) Peaucellier-Lipkin inversor (1864) Hart's first inversor / Hart's antiparallelogram / Hart's W-frame (1874) Hart's second inversor / Hart's A-frame (1875 ...
The model has also been offered throughout the years with both the round butt and square butt grip patterns. Beginning with the Model 10–5 series in the late 1960s, the tapered barrel and its trademark 'half moon' front sight (as shown in the illustrations on this page) were replaced by a straight bull barrel and a sloped milled ramp front sight.
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15–7, 1994 Synthetic grips introduced, drill and tap frame, change rear seat leaf, change extractor; 15–7, 1995 Delete square butt; 15–7, 1996 Begin shipments in blue plastic case; 15–7, 1997 4” barrel only; change to MIM thumbpiece; shipped with master trigger locks; change to MIM trigger
The rear sights are fixed; similar to those found on the small J-Framed .38 Special and .357 Magnum as well as the medium-sized K-frame service revolvers. The front sights on both the standard and Crimson Trace models feature a tritium night sight that is drift-adjustable for windage corrections. It holds six rounds in any combination.
In the early 1960s, Elmer Keith, Bill Jordan, and Skeeter Skelton, all noted firearms authorities and authors, lobbied Remington Arms and Smith & Wesson to introduce a new .41 caliber police cartridge with the objective of filling a perceived ballistic performance gap between the .357 and .44 Magnums, thus creating a chambering which they believed would be the ultimate for law enforcement ...
A page of the 1976 S&W catalog, detailing the Models 36, 37, 38, 48 and 49. In 1989, Smith & Wesson introduced the LadySmith variant of the Model 36. This was available with 2 in (51 mm) or 3 in (76 mm) barrel and blued finish. This model also featured special grips designed specifically for women, and had "LADYSMITH" engraved on the frame. [4]