10 Years Ago
“The Evolution of Electric Strikes” looked at electric strike basics, technological advances at the time and troubleshooting. Jerry Levine wrote about the migration from magstripe cards to smart cards, just a short time before smartphones became the credential of choice. Tim O’Leary asked the question “what’s new in electronic access control?” Cansec’s Fred Dawber shared details of the company’s new Active Presence Reader. O’Leary also shared programming tips for Essex standalone readers and took a look at Paxton’s Net2 wireless access control system. DORMA’s George Nimee wrote about the Dorma ED900 low-energy door operator. Marty and Luke Jalove’s article, “Winning the Golden Key of the Labyrinth,” showcased the prowess of HPC code software and key machines. Another access control article recommended adding a biometric credential to secure prox card-based readers. Gale Johnson took a look at KSP’s expanding product line, including SFIC cores and keyways, convertible housings and the EX Series key system.
20 Years Ago
An installation of an Alarm Lock PL3000 was featured. Doug Hoffman, Perseus Wireless, described how simple it is to install and monitor a Perseus video system. Tim O'Leary offered instructions on installing a wire transfer system. O'Leary also showed how to use an Altronix timer module when required for an access control system. Jerry Levine tested a SABL pushbutton lock by Securitron. Tom Gillespie suggested selling decorative hardware for added profit. Levine showed how to disassemble and service some intricate Weiser knobsets. Steve Hunt, president of 4A International, described the future of locksmithing. His forecast was exactly right. Gale Johnson installed a Strikemaster II jamb reinforcer on a door and door jamb at his own home. Levine tested a few GM VATS bypass adaptor products. Donald Dennis demonstrated some tools made by Petersen Mfg. for extracting broken keys. Tiny fit keys to two motorcycles: a 2002 Buell and a 2004 Harley Sportster. While these cycles are from the same Harley-Davidson group , the type of locks used have no similarities. Steve Kaufman offered some opinions about working together for the good of the industry.
A Closer Look at Surface-Mounted Door Closers
Editor’s note: This Jerry Levine article was originally published 10 years ago and contains some valuable reference information. While new door closer models have been introduced, installation and servicing requirements have not changed.
The surface-mounted door closer has had significant changes in the last 70 or so years since the change from a "pot belly" style of door closer. Some of the changes include aluminum body, all weather fluid, powder coated finishes, adjustable back check, delayed action, cam closers and special function arms including the track arm. A significant change has been the development of the power adjustable door closers, which permit the spring power to be increased or decreased in an attempt to meet the needs of the opening.
The surface mounted is the easiest door closer to install. Upwards of four screws secure the closer body and up to five screws secure the arm bracket. Because this type of door closer is not concealed, minimum modification or brackets are needed for the installation.
Surface mounted door closers are available in four basic variations: track arm, regular arm, parallel arm and top jamb mounted.
The regular arm door closer is mounted on the upper portion (top rail) of the pull (hinge) side of the door. The arm is attached to the frame face at a right angle to the door.
The parallel arm door closer is mounted onto the push side (opposite the hinge) side of the door and the arm mounted onto the head jamb. The arm is parallel to the door, unlike the regular arm that is at a right angle to the door.
The top jamb door closer is mounted onto the push side (opposite the hinge side) head jamb. The arm is attached to the upper portion (top rail) of the push (opposite the hinge) side of the door at a right angle to the door.
The track arm door closer is mounted on either the push side or pull side of the door. When track arm closer body is mounted onto the push side of the door, the arm is mounted onto the head jamb. When the track arm closer body is mounted onto the jamb head, the track is mounted onto the upper portion of the push side of the door. When track arm closer body is mounted onto the pull side of the door, the arm is mounted onto the frame face. When the track arm closer body is mounted onto the jamb head, the track is mounted onto the upper portion of the pull side of the door.
Read the full article at www.locksmithledger.com/12067800
