Case XX Patterns 31-45

[00-15] [16-30] [31-45] [46-60] [61-75] [76-90] [91-105] [105-953] [Knives with no pattern number]

Pattern #31

This is a 3 3/4" knife that is known by most collectors as a regular jack, swell end jack, or tear-drop jack knife. It has been produced with both a spear and clip master blade. As far as I know, the secondary will always be a pen blade.  The 31 pattern has been produced with and without left side bolsters.  When there is no rear bolster, most will have a 0 preceading the 31. Case started making them sometime prior to 1915.
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Pattern # 031

The 031 pattern has been used on at least three different knives that I know of.

*One is a bare-head (no left hand bolster) version of the above described 31 pattern jack knife. They are 3 3/4".

*Another knife with this pattern number is a 3 3/4" jack knife that most refer to as a whaler or navy knife.  They have a single sheepfoot blade, and usually have the letters SH following the pattern number.  They all have walnut handles and were produced without rear bolsters.  Case began manufacturing this knife sometime prior to 1940, and discontinued it in the 70's.

The third version is a 3 11/16" jack knife that is most often called an electrician's knife.    They usually have a screwdriver / wire-stripper master blade that locks open with a liner lock system.  The second blade is usually a spear. They sometimes have a third blade which will generally be small hawkbill blade.  These knives always have walnut handles,  no rear bolsters, and bails on the left side.
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Pattern # 32

The 32 pattern has been manufactured as both a two and three-bladed knife.

The two bladed version is a jack knife that measures 3 5/8" closed.  They are usually referred to as  Texas jacks, or premium jack knives.  I believe they will always have a clip master blade along with a pen secondary blade that each ride on separate springs.  Case began manufacturing them sometime prior to 1940.
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When there are three blades on the 33 pattern, it is known as a stockman or stock knife.  It is roughly the same size as the 18 pattern stockman (3 5/8" closed), but has squared bolsters rather than rounded ones.  Just like the 18 pattern,  it is often called a medium stockman because of its size in relation to other stockman knives.  They almost always have a clip master blade along with a sheepfoot, and pen secondary blade. Case has been making them since sometime prior to 1940.
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Pattern # 33

There have been at least three distinct patterns manufactured with this number. Two two bladed knives and one three bladed knife (all use the same handle die).

*One of the two bladed versions is a 2 5/8 inch jack knife that will almost always have a clip master blade and a pen secondary. Both blades will open on the same side.

A second two bladed versions is a pen knife that measures 2 5/8" closed.  These are usually referred to as small or baby premium pen knives.  All of them that I have seen have a clip master blade, and a pen blade that open from opposite sides sharing a single back spring.  These knives were introduced sometime prior to 1940.
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The three bladed version is one of many knives that goes by the name stockman.  It is among the smallest measuring only 2 5/8". Due to its size, it is often referred to as a baby premium stock knife, or small stockman.  It looks very similar to the 44, 32, 92, and 75, but is smaller.  These knives most often have a clip master blade, along with a sheepfoot, and pen blade.  They were introduced by Case sometime prior to 1940.
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Pattern # 35

This knife is a 3 1/4" Jack knife that is usually called a regular jack,  swell end jack, or tear-drop jack.  In the early days, this pattern was manufactured with either a spear, clip, or sheepfoot master blade.  From about the 70's forward however, all were made with a clip master blade.  The second blade will almost always be a pen blade, but some have been manufactured with punch secondary blades.  Those knives with the clip blade will usually have  a 1/2 at the end of the pattern number (when there is a pattern number).  Case started manufacturing this pattern sometime before 1915.
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Pattern # 035

The 035 pattern is a 3 1/4" swell center Jack knife. They are basically the same as the above described 35 pattern except for the swell center frame.
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Pattern # 36

This pattern is a 4 1/8" jack knife that is known as a budding or grafting knife.  They have a single coping blade, have no bolsters, and all have slick black handles.  Case began manufacturing this pattern prior to 1940, and discontinued it sometime before 1964.

Pattern # 37

This pattern number has been assigned to at least two distinct knife patterns.

The oldest version is a 3 1/2" swell center style Jack knife that is often referred to as a coke bottle. Most have spear and pen, or clip and pen blades.

The more recent version of the 37 pattern is a 3 5/8" clasp style jack knife that is called a Sodbuster Jr.  They have single skinner blades, and do not have bolsters. A few have liner lock mechanisms. Case introduced them around 1970 as a smaller version of the sodbuster described below. Most of them have black composite handles, but newer versions can be found with yellow composite handles. Some older commemorative models were manufactured with green delrin, pakkawood, and genuine stag handles.
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Pattern # 38

Case has used this pattern number on at least two distinct knife styles.

The oldest version is a 3 5/16" multi-bladed knife known as a congress. They have four blades and were being manufactured by W.R. Case and Sons prior to 1915.

The more recent 38 pattern is a 5 5/8" clasp style jack knife that goes by the name sodbuster.  It is the same as the 37 pattern Sodbuster Jr. described above, except that it is larger.  These were introduced by Case between 1965-1969. Most of them have black composite handles, and some have liner lock mechanisms. When this is the case, the pattern number will be followed by an L.
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Pattern # 39

Case has used this pattern number on at least two different knives.

Prior to 1964, the pattern number was assigned to a 4 3/4" jack knife that goes by the name banana knife.  This version has a single hawkbill blade, does not have bolsters, and was produced with walnut handles only.  It has a unique arching shape that looks like a banana.  Case ceased production of this knife sometime prior to 1964.

Case's first knife pattern that had the number 39 is a 3 3/4" knife that is known as a sowbelly. They quit producing them prior to 1940, but reintroduced them as a 3 7/8" knife in 2002. The newer knives have the same unique design where the handle curves in a u shape.  Both versions generally have three blades; a clip master blade along with a sheepfoot blade and a spey blade.  Some have five blades; a clip master blade, along with a sheepfoot, a spey, a short clip, and a pen blade. In the past, Case has manufactured a 039 pattern as well. They are 3 7/16" knives that differ ever so slightly in shape, and blade design.
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Pattern # 40

This pattern is a 4 7/16" serpentine style jack knife that most call a  dog leg trapper.  They were produced and discontinued by Case prior to 1940.  They have since been reintroduced.  They have a clip master blade and a spey secondary blade.  A few may be found with pen secondary blades.
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Pattern # 42

This pattern number was used on a serpentine style jack knife that measures a bit less than 3". Most of them have a clip and pen blade and no left side bolster. They are very similar to the 20 pattern peanut, but are slightly longer.

Case also manufactured a 3 1/2" three bladed swell center knife with this pattern number. They have a spear master blade along with a pen and punch blade. W.R. Case manufactured this version sometime prior to 1915.

Pattern # 042

The 042 pattern has been manufactured as a two bladed knife and as a three bladed knife.

The three bladed version is a whittler that has a spear master blade along with a pen and file blade.

The two bladed knife is a 3" pen knife that usually has a spear and pen blade that extends from opposite sides.  Some have bails, and some do not.  Case started making them sometime before 1915.

Pattern # 43

Case's most recent version of the 43 pattern is a 5" barlow style jack knife that most collectors call a daddy barlow, or grand daddy barlow.  They all have a single clip style blade, no left side bolsters, and most have no shields.  Case started manufacturing them sometime prioe to 1940 and later discontinued them in the late 1970's.  Case has recently started making them again. Older versions were made with smooth black, green bone, red bone, bone stag, and delrin handles.
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W.R. Case and Sons was manufacturing a 3 3/4" serpentine style whittler knife prior to 1915. This version has a Clip style front blade and two pen style back blades.

Pattern # 44

The 44 pattern has been manufactured in four variations that I know of.
There are two two-bladed versions and two three-blade version.

One two-blade version  is a 3 1/4" jack knife that is generally called a junior premium jack or small jack knife.  All of the 44 pattern Jack knives that I have seen have a clip and pen blade that open from the same side.  They were introduced by Case sometime before 1940.
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Another two-bladed version is a 3 1/4" pen style knife that is sometimes referred to as a half stockman.  They generally have a clip master blade and a pen secondary blade that extend from opposite sides.  This particular version will normally have a 0 preceding the pattern number.  Case started making them sometime before 1940.
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Case's most recent three-bladed 44 pattern is a 3 1/4" knife known as a stockman.  It is smaller than many of Case's stockman knives, so they are often referred to as small, junior, and sometimes medium stockmans.  These knives most always have a clip master blade, and usually a sheepsfoot and pen blade.   Case started making this version sometime prior to 1940.
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Sometime prior to 1915, W.R. Case and Sons began manufacturing a 3 1/2" stockman with this pattern number as well. They have a clip master blade and a sheepsfoot blade on the right side, and a pen on the left.

Pattern # 45

This pattern has been produced as a two and three bladed knife.

The two bladed version is a 3 5/8" double end style jack knife that is often called a cigar. They usually have a spear and pen blade that open on opposite sides. Case started manufacturing this pattern sometime before 1915.

The three blade version is 3 5/8" closed, and usually goes by the name cattleman's knife or cigar.  Most of them have a spear or clip master blade along with a spey and punch or spey and sheepfoot blade.  The spey blade was used for castrating livestock, which (as far as I know) is how the knife became known as a cattleman's knife.  Some versions have a pen in place of the spey or sheepsfoot blade.  W.R. Case & Sons began producing them sometime prior to 1915.

Pattern # 0045

This is a 3 3/4" multi-bladed knife known as a camper's knife, scout's knife or utility knife.  You will usually find four blades.  The master is generally a spear, with the others include a can opener, punch, and Screwdriver/Cap Lifter blade.  There is usually a bail on the left side as well.  These knives were introduced sometimes prior to 1940.
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