SMLE Wire Breaker Drawings

[pedro243]

Hello,

I was wondering if anyone has any engineering drawings for the SMLE Wire Breakers, the type that fit P'03 and P'07 bayonets.

I would like to try and 3D model and 3D print one as a mock up.

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[Alan de Enfield]

Hello,

I was wondering if anyone has any engineering drawings for the SMLE Wire Breakers, the type that fit P'03 and P'07 bayonets.

I would like to try and 3D model and 3D print one as a mock up.

Sorry I do not have drawings, but would just ask if you mean the "WIRE BREAKER" or the "WIRE CUTTER" ?

The "Wire Breaker" was a simple guide which guided the barbed-wire strand along the bayonet until it was aligned with the muzzle, a round was then fired cutting the barbed-wire.
There were several different makers of the wire breaker offering different designs.

The "Wire Cutter" relied on the bayonet sliding the barbed-wire along its length and aligning the wire with the cutter jaws. Pushing the rifle forward activated the pivot, moving the cutter blade and cut the wire.

[pedro243]

Cheers for the reply.

I am looking for the breaker type. The removable kind that fits both the 1903 and 1907 bayonets

[Flying10uk]

I seem to recall that these items were "private purchase"? Or were some issued?

[pedro243]

I seem to recall that these items were "private purchase"? Or were some issued?

I believe they were issued, but I believe they were simply scrapped from stores due to no need. So they are pretty scarce I believe.

[usabaker]

Pretty awesome, I've never seen these

[Flying10uk]

I was wondering if anyone has any engineering drawings for the SMLE Wire Breakers

Have you tried asking the Royal Armouries Museum at Leeds?

[Tarrantula]

Never heard of these until this thread. Looks like one just popped on up ebay https://www.ebay.ca/itm/355313573374...Bk9SR86qpM-eYw

[pedro243]

Never heard of these until this thread. Looks like one just popped on up ebay https://www.ebay.ca/itm/355313573374...Bk9SR86qpM-eYw

Hi Tarrantula,

Nice find. This is the wire cutter type. The wire breaker is a little attachment that slides on a bayonet. It is used to guide wire inline with the muzzle so a bullet can be shot and cut the wire. Look them up, they are a simple device

[Alan de Enfield]

Never heard of these until this thread. Looks like one just popped on up ebay

Have you got 'word' ?
I cannot post it (with the pictures ) as the forum does not accept .Docx format

Featured Bayonet - Wire-breakers
• Back

This is an updated version of the article originally published in the Journal of the Society of American Bayonet Collectors
Ever since the bayonet was ‘invented’, numerous innovations have been attempted over the years to render them more useful by combining functions. Thus 'sword bayonets', 'sawback bayonets', 'flint knappers' and so on.
Perhaps the most exotic and impractical innovation developed during the Great War : the ‘Wire-Breaker’.
During the course of WWI, thousands of barbed wire obstacles were installed by opposing sides to protect against advancing infantry. Penetrating these ideal defensive barricades became a major pre-occupation on the Western Front.
Artillery barrages were used to clear barbed wire entanglements prior to massed infantry assault, but by pock-marking the ground with shell holes, it only compounded the difficulties of advance. Ultimately, the newly developed ‘tank’ proved the ideal solution, able to flatten wire and provide effective cover for troops as they advanced behind them.

The concept of a bayonet mounted wire-breaker was simple enough. As the soldier advanced through fields of barbed wire and machinegun fire towards the enemy trenches, it was supposed he would possess a sufficiently level head, and have enough time to ‘break’ through stands of wire individually. To accomplish this he simply had to slide a strand of wire along the bayonet blade until it came to rest in the notch of his Wire-Breaker. In doing so, it was automatically aligned with the muzzle of the rifle. Theoretically, firing a round would be sufficient to break the strand, allowing him to proceed with his advance.
The illustrated Wire Breaker No 1 was approved on 9th May 1912 the British War Department in anticipation of the needs to come.

Manufactured from sheet steel, the wire-breaker was designed to slide along the bayonet blade until it rested against the crossguard. A built-in spring clip held it in place.
British Imperial forces were likely to find they could either be fixing Pattern 1903 or 1907 bayonets to their SMLE Rifles. The blade width of a P1903 bayonet is 30mm, a P1907 bayonet only 23mm.

To render the Wire Breaker universal to both bayonets, a swiveling wedge was built into the bottom, providing a snug fit against either blade when moved to the appropriate position.

To help the soldier determine the correct position of the wedge during the heat of battle, the numbers ‘3’ and ‘7’ were stamped into the opposite sides of the body and swivel of the Breaker, corresponding to the pattern of bayonet in use. Matching the two numbers meant the Breaker was in the correct position to fit either the P1903 or P1907 bayonet.
Five further patterns were approved, including one to fit the P1913 bayonet, and all were finally declared obsolete in February of 1921.
Lost, destroyed or recycled over the years, these mass produced ‘penny’ items are now extraordinarily hard to find, and highly desirable to the bayonet collector.

The innovation was further developed by the Wilkinson Sword company, incorporating the wire-breaker into the crossguard itself.

The ‘catcher’ resting on the back of the blade swivels upwards to provide sufficient clearance for the bayonet to fit into the scabbard.

The crossguard must have been an extraordinarily difficult casting to make, and prone to catching in clothing and equipment when sheathed. Never adopted by the War Department, it is probable that only a handful were made. I know of only one other outside of my own collection.

Like so many bright ideas borne of the times, it is probable that the inventor of the wire-breaker never actually had to apply his idea in practice. One can only imagine the futility of attempting to break through barbed entanglements using this method whilst under enemy fire.