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HOOK & HASTINGS ORGAN

CONSOLE REPLACEMENT UPDATE

Work on the installation of the console of our beloved and historic Hook & Hastings organ has been completed under the auspices of the Odell Organ Company. Only minor tuning "tweeks" remain.

If you haven't seen the work accomplished by the Odell craftsmen, visit the chancel to take a look at the console—in particular, how the wood and ornamentation matches the choir pews. In lieu of a visit, click the pictures below to see different aspects of the new console.

Thanks to the great generosity of many people and the prayers of all, we achieved our main financial goal for the organ project. As the work wraps up, please consider a gift to the organ fund to fund any additional necessities.

CONTRIBUTORS TO THE ORGAN FUND

Thank You for the Generosity and Faith of . . .

S. John's Women's Guild in memory of Thomas Prezalar
Mrs. Elizabeth Cranston
Mr. & Mrs. Ted Spargo
Mr. & Mrs. James Robinson
Mr. Edward Carnes
Mrs. Edith Simmons
Mr. Robert Currier
Mrs. Samuel Rodman
Mr. and Mrs. Walter and Deborah Riddick
The Rev'd and Mrs. Edward Winsor
Mrs. Teddi Shaw
Mrs. Diana Wray
Mr. Stacy Swift
The Rev'd Henry Turnbull
Mr. James A Clements
Clements' Marketplace, Inc.
The Estate of The Rev'd Alan P. Maynard
The Chamber Singers of Swanhurst Chorus
Mr. David Jones

OUR HOOK & HASTINGS ORGAN

The Hook and Hastings Organ was originally installed as part of the original construction of the church in the 1890's. It was a tracker organ, so-called because "trackers" created a direct mechanical connection between the keys at the organist's fingers and the pipes in the organ chests. Hook and Hastings was one of the preeminent American organ builders of the 19th century, and S. John's was certainly foresighted to have selected a builder of such quality and integrity. The organ is significant also because it is one of the last manufactured, installed, and then updated by Hook and Hastings before the company went out of business after the death of the founders. The result is that we have a true gem, both historically and musically.

In the 1930s, in response to technological advances (specifically the development of low-voltage circuits), the Hook and Hastings company returned to S. John's to electrify the action of the organ and make some judicious tonal alterations to the instrument. The electrification meant that the keyboards, that had been attached directly to the front of the organ chests on the north side of the chancel (and directly facing the wall), could be moved and installed in the console in their current location on the south side of the chancel, near the Sacristy door. This position made it possible for the organist to see and conduct the choir in their pews.

Since the 1930s electrification, there has been very little done to the organ beyond routine maintenance and tuning. Seventy-plus years have, however, taken their toll on the mechanisms of the instrument, and we are now evaluating and restoring the operating systems. We have effected a number of the most critical repairs to ensure that we have the use of the instrument on Sunday mornings.

It is important to note that because of their design and construction, these mechanisms have provided a remarkable period of reliability almost three-quarters of a century and that careful repair and maintenance will yield that much time again in continued use. To date, we have repaired the valves and bellows that control the stops and pipes of the Swell and Great divisions and fixed numerous wind-leaks caused by deteriorated leather and cork gaskets. Most of these repairs are long-term, rather than stop-gap measures, meaning that the funds spent so far are investments in the future of music at S. John's. The largest repairs remaining are the complete rebuilding of the console, the main chests of the Great and Swell, and the stop action of the Pedal division.

Not all the repair has been done by outside contractors. To keep the price as low as possible, much of the labor has been provided by members and friends of S. John's. I am deeply grateful to them, and I wish to publicly acknowledge the time and talent of Ann and Pel Boyer, Chris Scott and Mary Naylor, Dave Jones, Peter Herne, Harry Gustafson and Scott Blatt, who have together contributed more than 100 hours of work towards the completion of our current project.

HOW DOES THE ORGAN WORK?

Let's start with the simple idea that you need to get wind (from a blower) into the pipe - just like a person blowing a penny-whistle. This is accomplished by means of a wind-line (basically a pipe) that runs from the blower in the basement to a sealed, wooden chest into which the pipe (along with 757 other pipes) is stuck, up in the organ chambers on the north side of the chancel.

Now we need some system to open and close the hole a the foot of the pipe - otherwise it sounds continuously. Originally (in 1894) the system for opening these valves was direct; a stiff wire lead downward from the valve directly to the back end of the key on the keyboard. When the key was depressed, the wire pulled the valve open, and air flowed into the pipe. When the key was released, a spring attached to the valve pulled it shut against the top of the wind chest, shutting off the air.

This direct system, called "tracker action," was limiting in a number of ways. First, the keyboards had to be placed against the front of the organ, facing the wall so that the pull-down wires could make the connection. This meant the that organist had his or her back to the chancel and the choir, clearly not the best arrangement for leading the music of the liturgy. The second difficulty with this system was that the size of the organ was limited (given the space available) by the need for the organ chests to be mounted vertically above the line of the keyboards. There were more cubic feet available in the organ chambers, there just was no way to fill that space with pipework.

The 1934 rebuild took advantage of technological advances to change from the "tracker action" to what has become known as "electro-pneumatic action". As the name implies, both electricity and wind power are now used to open the same valve at the foot of the same pipe mounted on the same chest as before. Here's how it works:

  1. A very low voltage (5 - 6 volts) current is sent from the keyboard by wire under the chancel floor to the organ chambers, where it activates a small electromagnet.
  2. The electromagnet moves a small valve about 1/16", which allows air to vent from a pressurized chamber.
  3. Venting this air in turn opens a larger wind valve, which vents a secondary pressurized chamber.
  4. Venting of this secondary chamber causes a "pull-down pouch" to move about 1".
  5. A wire attached to the "pull-down pouch" pulls down on the valve at the foot of the pipe, and air flows into it.

Remember - there is one entire system (electromagnet, primary valve, secondary valve and pull-down pouch) for each note on two keyboards and pedalboard; a total of 142. We should also note that the wind supply for the alves is independent of the wind supply that makes the pipes speak.

What is incredible about this seemingly Rube Goldberg affair is that it works, and that it works almost instantaneously. It also works more reliably than most of the mechanical creations with which we have surrounded ourselves over the last half century!

The final piece of the puzzle is how we select specific groups of pipes called ranks to create and blend different tone colors.

Our Hook and Hastings uses slider and note-channel windchests. This means that when a key is depressed at the console, the valve on the windchest opens beneath all the pipes tuned to that note, whether or not they are meant to sound. The pipes that speak are selected by thin boards, ten or more feet in length, placed laterally beneath each different rank of pipes. Drilled into the board (or slider) are holes that line up exactly with the bottom of the pipes mounted above. When the organist selects a given rank of pipes, the slider (by means of an electro-pneumatic system identical to the one described for the key action) moves lengthwise about 1", aligning the holes with the pipes above. When the organist turns off that rank of pipes, the slider moves back so that the holes no longer allow air up into the pipes.

Some statistics:

  • There are 1,914 pipes in the organ chambers
  • The largest pipe is 16' long, 18" square, and made of maple
  • The smallest pipe is 4 " long, and about 1/16" in diameter
  • The only materials used in the organ are wood, leather, ivory and soft metals (tin, lead, zinc)

 

 


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