This is the first part of my how to make a crossbow serie. The trac trigger firing system ttfs that slides along the rail contains the safety and antidry fire mechanisms figure 12. With an all steel construction, it works in concert with our exclusive rotary latch, which creates the fastest lock time on the market. Designing medieval nut and trigger crossbow locks crossbow. Build a quick and simple montagnard style crossbow sensible. Please follow all safety, assembly and troubleshooting instructions contained in this manual. The lock trigger was fitted into a metal notch sear in the bottom of the nut to protect the nut form being grind away by the lever. So, firearms use a firing mechanism, bowscrossbows use a release mechanism.
Never place any object or part of your body in the path of the crossbows string when cocked, serious injury or death may occur. This article describes design aspects of a simple nut and trigger lock commonly seen on medieval crossbows. The three main components of the mechanism are the trigger 10, the catch 20, and the safety 30, pivoting in the case 3 about the trigger pivot pin 11, the catch pivot pin 21, and the safety pivot pin 31 respectively. Today we make a trigger lock mechanism for a rather powerful crossbow, would also work for bb guns though. However, in april of 2016 we began manufacturing and selling complete finished crossbows. A crisp trigger mechanism that allows you to execute the shot with minimal travel is key to maximizing your accuracy. When the ttfs housing is in the rearmost position the trigger mechanism is automatically engaged.
Knowing there had to be a better way to get off a clean shot, he collaborated with fellow mechanical engineer greg baniak to not just improve the trigger but to reinvent it entirely. The trigger was assisted in locking into the sear with a leaf spring or round spring. Cleaning your crossbow trigger mechanism bear, big game. Complete patent searching database and patent data analytics services. It allows me activate the crossbow while keeping my hand on the grip. Although there are tribal and individual variations in these crossbows, they all work pretty much the same.
The trigger pull on your ravin crossbow is about 4. Ok, this is what we are suppose to do here is share information. We believe the trigger is the most important component in any firearm and that you should love and trust your trigger. Congratulations, you are the proud owner of the finest production crossbow in the world.
Always check to see if the crossbow is on safe and unloaded when getting it from another person or from storage. Always place the trigger safety into the safe position before removing your foot from the stirrup. Tension will keep the cocking hooks against the rail if done properly. In the process of cocking the mxb crossbow the antidry fire device is activated automatically and the trigger mechanism is placed in the safe s position. Crossbow trigger mechanism hunters manufacturing co. The trigger mechanism works in conjunction with the trac trigger firing system. Barnett crossbows glossary of terms crossbow products. It is in a good state of preservation, with light patination. The crossbow mechanism under discussion was found in zibo, shandong province. Be sure to apply downward pressure against flight track. My previous tiny crossbow model worked great for awhile but the sear started getting.
Some of the bows used a t shaped wooden trigger that drops down through a slot in the tiller stock. The chinese trigger mechanism was a vertical lever composed of four bronze pieces secured together by two bronze rods. The trigger mechanism from one crossbow can be installed into another simply by dropping into a tiller slot of the same specifications and secured with dowel pins. A crossbow trigger mechanism is provided having three mechanically operable lever elements designated as a string holding cylinder, trigger lever and a locking lever. A crossbow mechanism with some unique features atarn. The trigger assembly may include a trigger pull weight adjustment mechanism that allows a user to adjust the trigger pull weight of the crossbow.
Basics of crossbow triggers crossbow building wiki fandom. Full point crossbow inspection on trigger mechanism, limb assembly, sliding catch, trufit stock and scope free return shipping back to the customer s. May 22, 2011 an easy to make carbine crossbow templates include trigger mechanism and all other parts. It is clear from surviving inventory lists in gansu and xinjiang that the crossbow was greatly favored by the han dynasty. When selecting a crossbow, pay careful attention to the quality of the trigger. If you notice your trigger doesnt pull as smoothly as it once did, it may be time for a cleaning. An easy to make carbine crossbow templates include trigger mechanism and all other parts. If repairs are necessary, return both stock and trigger to. Assassin owners manual v5 final excalibur crossbows. A medieval crossbow trigger mechanism including a roller nut, trigger lever and side plates made out of steel. The majority of european medieval crossbows used a lever, running directly on the roller nut. Make sure the crossbow is pointed in a safe direction. Excalibur crossbow will not be responsible for repairs caused by misuse or abuse. In this part, i make the nut and forge the trigger.
Certain embodiments of the present disclosure describe a trigger assembly for a crossbow. Crossbow trigger mechanism simple but sturdy instructables. Crossbow trigger mechanism simple but sturdy more by the author. The present invention is directed to a crossbow trigger mechanism providing improved bowstring retention and release characteristics. Watch the video to understand how to trigger works. Barnett trigger assemblies are intricate and finely tuned mechanisms. The first one is to add a bronze casing, and the other is to include a scale table with the shooting range on the trigger mechanism. The trigger mechanism is really the primary change, on most medieval designs it is not a trigger as we are used to but rather a lever which holds the nut in place, which in turn holds the bow string, when the lever is squeezed the nut is released allowing the nut to turn freely which acts to release the bowstring.
The curved piece of metal is designed to hold the arrow in place. Modern crossbows are compound crossbows which have stiffer limbs to make the bow more energy efficient and a string attached to a pulley system to make it easier to draw back with increased power as the bolt is fired. Dry firing means firing the crossbow without a boltarrow loaded into the crossbow receiver. The trigger mechanism comprises a pivotal string release latch for releasably holding a bowstring in a drawn position.
The grabcad library offers millions of free cad designs, cad files, and 3d models. The trigger and firing mechanism of a crossbow from the chinese warring states period, 3rd century bce possible a century later during the. Simultaneously, the bowstring passes between the first and sec ond quarrels, and the lower quar rel is automatically nocked ready for firing. Repairs inside your trigger unit must be performed at the factory only. Simple crossbow trigger mechanism homemade crossbow, diy. Part of the above mentioned crossbow wiki, this particular article goes into the trigger mechanism common in medieval crossbows in considerab. When the trigger is squeezed, the woods blocks push the bow string off of the nails and the arrows is released. The crossbow trigger mechanism of the invention in a first embodiment comprises a pivotal string release member for releasably retaining a bowstring in a drawn position.
These three lever elements are mounted for pivotable rotation in a substantially common plane about parallel axes. The string release member is pivotable about a first pivot point and has associated therewith a first sear surface. Read this instruction manual carefully and if questions exist, please contact either your dealer or excalibur crossbow inc. All listings current page auction buy it now classified ads. Ahoihoitoday we make a triggerlock mechanism for a rather powerful crossbow, would also work for bb guns though. Please practice handwashing and social distancing, and check out our resources for adapting to these times. Warring states crossbow trigger illustration ancient. Firearms only require the trigger to release the hammer to strike the primer that results in ignition of gunpowder and thus firing a round, so the load that must be overcome to fire the weapon is of the hammer spring and the friction involved in the interaction of the components. This barnett crossbow is equipped with an automatic antidry fire safety mechanism which engages when the crossbow is cocked. May 27, 2017 modern crossbow trigger mechanism post by phj sat may 27, 2017 12.
Barnett universal crossbow owners manual barnett crossbows. After the han dynasty, the original crossbow has two important design improvements. For the last 5 years, we have obsessed over triggers and have left no detail untouched. Relax the tension slightly to ensure the trigger latch. Im starting making a crossbow based upon a bsa mk6 styled stock.
These three lever elements are mounted for pivotable rotation in. Find great deals on ebay for crossbow trigger and crossbow trigger mechanism. Other bows use a little lever on the side of the tiller that lifts the string when you push. Now that we know the difference we can proceed to the components that make up the crossbow trigger. Always keep the crossbow on safe until you are ready to shoot. Desirably, a safety mechanism is provided that will prevent actuation of the trigger when the safety mechanism is engaged. The invention further provides a safe and reliable trigger mechanism which enhances accurate shooting with the crossbow.
If wax has gotten into the trigger assembly, return your ravin crossbow to our service department for service. Mats lipowski missed a buck at 40 yards because of a gritty, creepy, 9pound trigger. In at least one embodiment, a crossbow trigger assembly comprises a housing, a string catch and a. In general, a bowstring is retained in a cocked orientation by a string catch, and actuation of a trigger releases the bowstring. Typical components edit utilizing leverage edit reducing wear edit details on specific types of crossbow triggers edit. An arrow must be loaded into the arrowflight track to release the safety and the safety must be disengaged or in the offfire position before each shot. This video shows how to crossbow and crossbows mechanism work. The simple nut and trigger lock was the very common in the medieval times. Provide a hinged cover for the magazine and a trigger guard. Oct 30, 1984 a crossbow trigger mechanism is provided having three mechanically operable lever elements designated as a string holding cylinder, trigger lever and a locking lever. Their performance has been optimized at the factory. A crossbow is essentially a bow mounted on an elongated frame called a tiller or stock with a builtin mechanism that holds the drawn bow string, as well as a trigger mechanism that allows the string to be released chinese vertical trigger lock.
Slowly release hand pressure on the string until you are sure it is locked securely into the trigger mechanism. It auto engages in either the fire position or the safe position. This can cause a buildup of wax in the trigger mechanism or cams, leading to a possible malfunction. Trigger tactics for crossbows petersens bowhunting. I have recently become interested in crossbows, and for my first project i decided to build a copy of a hmong crossbow. You are now ready to load the crossbow with an arrow. In this condition the crossbow cannot be fired until an arrow bolt is in place. Steel nuts are faster than brass, though slower than horn.
Designing medieval nut and trigger crossbow locks crossbow building wiki this article describes design aspects of a simple nut and trigger lock commonly seen on medieval crossbows. Always keep the crossbow pointed in a safe direction. With very strong bows, they should be used with a reinforced socket. Build a quick and simple montagnard style crossbow. They last forever and are superb for very heavy draw bows above 150 lb.
Unevenly cocked crossbows will have erratic arrow flight. The present invention is directed to a crossbow trigger mechanism providing improved bowstring. How to make a crossbow part i trigger mechanism youtube. Unlike a firearms trigger mechanism, which is completely enclosed, dirt and debris can occasionally infiltrate a crossbow trigger mechanism at the opening of the string latch. Searblocking antidryfire mechanism and autosafe that engages every time the trigger sets for added inthefield safety. The alchem crossbow crossbow parts alchem serves as a reseller of finished prods and strings, and a machining service providing rough unfinished parts to crossbow manufacturers. For practical instructions on how to make the nut, refer to this article. Join the grabcad community today to gain access and download.
Once cocked the marks should be visible in the same position on each side of the trigger mechanism. The major difference that i found in these bows is the trigger system. Modern crossbow trigger mechanism post by phj sat may 27, 2017 12. Do not pull or lift the string away from the stock. Crossbow trigger mechanism simple but sturdy crossbow. The barnett crossbows glossary of terms will help you get up to speed like a professional arbalist. This is a simple guide on how to build to effective and simple crossbow trigger. Basic trigger mechanism cleaning is a doityourself task. Your trigger is your firearms operating system and its purpose is to ensure you are safe and successful. Properly and safely packaging their assassin for shipping. Continue drawing until the trigger safety switch moves to the on safe position. Always keep finger off the trigger and out of the trigger guard until ready to shoot. Ahoihoitoday we make a triggerlock mechanism for a rather powerful crossbow, would also work for bb.
Best trigger in a crossbow long range hunting forum. Us20140174419a1 safety trigger mechanism for a crossbow. In the process of cocking the crossbow the antidry fire device is activated automatically and the trigger mechanism is placed in the safe s position. The lodrag fire control trigger is an auto engaging trigger. Im lost for any dimensioned plans for a trigger mechanism has anyone any guidance they can give. Apply a ravin approved nonwax lubricant to the center. Within the rear of the mechanism is a piece of the original wood from the stock. One of the most important features on a firearm is the trigger. Alright so i havent published anything on here in years due to lack of worthy projects or time, or the combination of both. A crossbow is a weapon that has a horizontal bow mounted on a stick, called a stock. The parts of the trigger mechanism installed in the bronze casing can provide higher tension than those installed on the wooden. Jan 23, 2020 designing medieval nut and trigger crossbow locks crossbow building wiki this article describes design aspects of a simple nut and trigger lock commonly seen on medieval crossbows. I would rather have a really good trigger on a gun thats not super accurate than a.
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