New Covers for the 4040 Series: The LCN 4040 Snap-On Cover

•June 24, 2009 • Leave a Comment

The LCN 4040 Series of door closers has been making it simple to comply with ANSI and fire safety regulations for decades.  The popular, top-selling series now has a new addition: an innovative new cover that ensures even greater safety as well as professional and appealing aesthetics. The LCN Snap-On Cover makes retro-fitting existing 4040 series door closers easy.

The LCN 4040 series continues to be one of LCN’s top-selling door closers.  The 4040 Series’ innovative design offers flexibility when it comes to fire doors.  By law, fire doors must be closed to prevent the spread of flames from one part of a commercial building to another during a fire emergency.  The LCN 4040 Series of sentronic door closers lets building owners/lessees hold doors open if desired.  However, a current interruption (such as during a fire) will automatically close the door when a building’s smoke/fire detection system is activated.

The newest addition to the 4040 line of products is its cover, introduced in mid-2008. The new cover can be applied to any existing door closer from the popular series.  New models are currently being produced with the new cover design.

The new cover has a number of distinctive improvements over the old cover.  Its features include:

* An exclusive patented bracket design unique to LCN.  Installation takes seconds with the simple but effective snap-bracket design.

* No screws required.

* Bracket is non-handed, making it as easy for left-handers to apply as right-handers.

* Molded, seamless construction reduces the risk of wear and tear for a longer-lasting product.

* Modern design with rounded corners for a contemporary look.

The new LCN 4040 Snap-On cover comes in all of the same finishes as the rest of the series.  This makes it easy to match existing door closers already installed.  The variety of available finishes also makes it simple to match any office or building decor, creating a professional, unified look throughout your building or unit.

The LCN 4040SE Sentronic Door Closer

The LCN 4040SE Sentronic Door Closer


Hanging a Door: Hinges or Pivots?

•June 10, 2009 • Leave a Comment

Look at most any door throughout the course of a day and you’ll notice that almost all of them are swing on hinges rather than pivots.  Hinges are standard fare when it comes to door hanging, and most people assume that this is for good reason.

However, there are some compelling reasons to choose pivots over hinges for doors.  Aesthetics aside, pivots provide a number of advantages in many applications.

Hinges, by their very nature, work against the forces of gravity.  Installing a door requires a certain degree of precision, because doors that do not hang properly will not function as designed.  If they are hung too low, they may scrape the floor, damage the frame/threshold, and/or damage the bottom of the door.  Doors hung too high will scrape the top of the frame.  In either case, they may be unable to close properly.  Too much space at the top or bottom can allow drafts to enter in the winter and cool air to escape in the summer.  Working with the force of gravity rather than against it ensures that doors do not warp and floors and frames remain intact.

The biggest drawback to hinges is that the weight of the door on which they are hung pulls downward (with gravity) on an angle.  Eventually, their effectiveness is compromised due to this continuous angular pull.  Screws can become loose and screw threads may strip.  The frame and/or jamb can bend, warp, splinter and even break.  The door may eventually drop or slope downward toward the side on which it opens.

When choosing hinges over pivots, it’s critical to choose strong, sturdy, well-built hinges, such as Ives.  It’s important to choose the correct gauge for the size and weight of the door they are being applied to.  It’s also essential to use the right number of hinges.  For example, larger-than-standard doors may need to have extra hinges instead of the standard three in order to minimize the tension created by gravitational pull.  Hinges should also be checked regularly for wear and tear, and replaced as necessary, preferably BEFORE they become warped or stripped.

The major advantage of pivots is that they eliminate the problem of angular tension.  While hinges are mounted on the door jamb, pivots are installed on the top and the bottom of the door/frame.  The pivot at the top acts as a guide for the swing of the door and keeps it aligned.  The bottom pivot bears the entire weight of the door.  Instead of creating tension on the door frame, pivots transfer the door’s weight into the floor.  This means that doors are not prone to dropping and sloping in the same way they are with hinges.

What is a Door Silencer?

•May 29, 2009 • Leave a Comment

Do you have a problem with doors that rattle and make noise when they close?  Door silencers were invented as a solution for quieter doors.

A door silencer is a small piece of molded, heavy-duty rubber material.  It may be cone-shaped or rod-shaped.  The cone/rod is molded to a flat, slightly thickened backing.

The Ives SR64 cone-shaped door silencer.
The Ives SR64 cone-shaped door silencer.
A door silencer is affixed to the frame of a door.  They can be applied to both metal and wooden doors.  Silencers are installed by drilling a cavity into the stop strip of the door frame.  The rod/cone portion of the device then slips inside the cavity.  It can be secured by simply driving a brad through the stop strip and into the rubber stem of the device.
The flat portion of the  door silencer will lie slightly raised from the stop strip.  However, it is flexible enough to allow the door to close completely.  The rubber acts as a shock and sound absorber.  When the door is closed, the silencer absorbs the force generated from closing the door, making it virtually silent.
The number of silencers that should be installed depends largely upon the size and components of the door.  A standard size door usually needs no more than three silencers spaced equidistant from one another: one in the side stop strip near the top of the door frame, one in the center and one near the bottom.  In pairs of doors, four silencers are usually recommended (two for each door) and are installed in the top stop strip.
Some applications for door silencers include
  • Hospitals
  • Childrens/babies rooms
  • Offices
  • Schools
  • Care/group homes

Jamb-Mounted Door Closers: A Better Alternative to Concealed Devices in Fire Doors

•May 19, 2009 • Leave a Comment

Door closers are more than just a convenience for commercial building owners, lessees and their patrons.  They are required mechanisms in most every region in North America in order to preserve the fire integrity of commercial buildings.  Put simply: door closers may save lives.

Keeping doors closed and buildings secured is the perennial problem of commercial building owners everywhere.  With many doors seeing moderate to heavy foot traffic every day, 365 days per year, maintaining secure perimeters can be a challenge.  It’s also a challenge to make sure that dollars are being spent on important business items and not drifting out of open doors into the heat of summer or the cold of winter to vanish into the atmosphere.

Door closers solve a number of problems related to building security and maintaining indoor air quality and temperature.  Most businesses would likely employ their use even without a building code requirement.

The extra challenge comes when building/business owners want to preserve aesthetics without compromising fire safety and integrity (fire doors, by law, must remain closed at all times.)  Overhead, surface-mounted door closers may not fit with every interior design.  Concealed door closers provide one answer to the question of aesthetics.

However, when it comes to outfitting fire doors, concealed door closers aren’t always the best choice.  Concealed door closers have to be mounted inside the door itself.  This requires boring into and cutting away some of the door, which can lead to problems with fire integrity.  The less that fire doors are altered, the better they are at preventing the spread of fire from one part of a commercial building to another.

That’s why jamb-mounted door closers may be a more suitable alternative.  Jamb-mounted devices are attached to the inside of the door frame (jamb) and the inner edge of the door.  A pivoted arm attaches the two parts together and provide the torque which pulls the door shut after it has been opened.  There is no cutting of the door required for installation.  The device can be seen only when the door is open.  When the door is closed, it is completely invisible on both sides of the door, providing the sleek, modern look that many building owners and lessees desire.

The Ives Pocket Pivot Hinge: What is it, and Where is it Used?

•April 28, 2009 • Leave a Comment

Pocket pivot hinges may be relatively unfamiliar to many, even contractors.  Pocket pivot hinges are not common, but are innovative nevertheless, and worthy of consideration, particularly for certain commercial building applications.

An Ives Pocket Pivot Hinge

An Ives Pocket Pivot Hinge

The Ives Pocket Pivot Hinge works on the same principle as the company’s other pivot-style hinges.  The pivot hinge  consists of a pin and and a single joint.  The pocket pivot hinge takes pivot principle to a new level.   The pocket pivot allows the door to be opened to a full ninety-degree angle.  When the door is fully opened, it actually rests flush in the “pocket” of the corridor.  In this way, the door is completely out of the way of hallway/corridor through-traffic.

The Ives Pocket Pivot Hinge is the perfect solution for commercial buildings with corridors that:

* Experience heavy through-traffic.

* Rely upon clear corridors for executing business.

* Need extra safety measures in place (particularly in emergency situations.)

* Appreciate a certain aesthetic appearance.

Pocket pivot hinges are commonly found in commercial buildings like hospitals.  Hospital corridors not only experience heavy foot traffic, they are also constantly subject to situations which require ease of fast movement and pathways that are free of any obstacles.  Precious seconds can be saved when open doors are not protruding into corridors, blocking gurneys or stretchers and hampering medical personnel.

Pocket pivot hinges are also found in hotels and high-rise buildings.  These types of buildings also experience a steady daily flow of traffic.  Corridors are frequently built as narrow as building codes will allow in order to increase the amount of living space in the building.  This sometimes necessitates extra safety measures so that corridors can be navigated easily, especially in an emergency/mass panic situation such as a fire.  Hallways are free of door obstructions, and are also easier for emergency workers to navigate even if doors are open.

Each single Ives 91105F Pocket Pivot Hinge can bear up to ninety pounds of weight, so the number of hinges needed for a particular door depends upon the size and weight of the door.  Typically, doors up to seven feet should require no more than two hinges.  Doors over seven feet high should use three.

The 91105F is full mortised and employs heavy-duty ball bearings for durability.  The stainless steel components are fire rated for three-hour metal fire doors.  The Ives Pocket Pivot Hinge provides long-lasting stability and performance for commercial buildings where clear corridors are a necessity.

Glynn-Johnson Makes Improvement to its 400 Series Overhead Door Stops

•April 20, 2009 • Leave a Comment

The Glynn-Johnson 400 Series of overhead door stops  is better than it used to be.  The 400 Series is one of the company’s most popular line of overhead door stops.  Improvements to its design makes each product in the line more durable, a bonus for any door, particularly those which see a high degree of daily traffic.

The improvement was made in 2002, and came in the way of re-designed end caps.  The new end caps are stronger, and fit more closely in the door’s mounting hardware.  The result is an overhead door stop that will resist damage and last longer than the old design.

The change in end caps did not necessitate any change in the design of the stoppers themselves, nor does it change the door preparation.  This makes retrofitting 400 Series models produced before 2002 relatively simple.  Models which were made before 2002 can simply have the end caps replaced.  Even if the entire unit needs to be replaced, no changes need to be made to the existing door template.

Glynn-Johnson, a subsidiary of the Ingersoll Rand company, has long been known in the industry as “the overhead door specialists.”  The company has been in business for 75 years, and employs some of the best  engineers in the world who design its many overhead door products, including the 400 Series, and its line of push/pull latches.  Glynn-Johnson manufactures the most reliable overhead door stops in the industry, as well as offering a comprehensive warranty on its products. 

Glynn-Johnson continually looks for ways to improve upon existing products, such as they did with the 400 Series end caps.  They also continue to research and develop new products and technologies.

How Many Deadbolts Does My Door Need?

•April 14, 2009 • 1 Comment

Sometimes home and business owners assume that installing more than one deadbolt will make a door more secure.  Is this really the case?  The answer often depends largely upon one thing: the size of the door.

Unless your door is a larger-than-standard size door, adding one or more extra deadbolt locks does not exponentially increase the security level of the door.  To put it more plainly, twice as many deadbolt locks does not equal twice as secure a door.

Adding an extra deadlock only slightly increases the door’s resistance to being rammed in (i.e. kicked) by force.  In fact, it may be as little as a ten percent or less increase in the psi of force needed.  This may not be enough to warrant the extra money and/or work involved in installing a deadbolt.

Adding a second lock may be an extra deterrent to a lock-picking thief who is looking for nothing more than a quick illegal entry.  However, a determined thief who really wants whatever is inside your premises won’t be deterred be a second deadlock.  Experienced thieves can pick a lock in mere seconds, so a second won’t usually add enough time to his entry to scare him off.

If discouraging lock-pickers is your goal, it’s better to invest more money in one high-quality, tamper resistant deadlock rather than two which are of a lesser quality.  Install one strong deadbolt, then spend a little bit of money on other things that are bigger deterrents to lock-pickers, like good lighting, landscaping which increases visibility, or a reliable alarm system.

The only time that a second deadlock may be really be warranted is for homes or commercial buildings which have larger-than-standard doors.  Taller or wider doors would benefit from having a second point of resistance to force on the lower half of the door in addition to the standard one just above the middle of the door.

Looking for a high-quality commercial door lock that is strong and tamper resistant?  Try the Schlage B-600 Series Heavy Duty Commercial Deadlock.