Mighton Products : Spiral Sash Balances

Spiral Sash Balances

{Standard} {Purpose Made} {Groove Dimensions} {Accreditations}
{Fitting Guide} {Ordering Information}

For 65 years spiral balances have offered an alternative to traditional weights and pulleys.
Simplified frame construction achieves considerable cost savings and greater design flexibility.
The accelerated steel spiral rod controls the increase and decrease of spring tension, enabling a sash to be operated with the same ease at any point of the sash run.

To order "Spiral Sash Balances" please use our special order form by using the button below.

You can view our fitting guide for sash balances by using the button below.

Standard

Available in three weigh bands

5 - 15 lbs

15 - 30 lbs

30 - 40 lbs

Balances are stocked in 1" increments from 8" to 51".

Purpose Made

All balances above 40 lbs are purpose made to the weight and length required. However we keep a range of popular length balances in weight ranges of

40 - 45 lbs	45 - 50 lbs	50 - 55 lbs
55 - 60 lbs	60 - 65 lbs

These are availalable for next day delivery.
Balances above 65 lbs or of unusual length normally take eight days to manufacture.

Mighton products will calculate the length of the balance required for each sash from the data given by the customer on our spiral balance order form. Whilst we can calculate the weight of glazed sashes automatically, the customer should note that this is at the their own risk and it is more prudent to give accurate glazed weights at the time of ordering.

Our confidence in the construction of our balances enables us to offer a 10 year guarantee against manufacturing faults.

Groove Dimensions

Up to 40 lbs balances require a 17 mm sq groove in the sash or frame. Above this weight the groove dimension needs to be increased in accordance with the table below.
The Mighton range can accommodate all double hung windows up to 100 lbs (45.4 kg) in weight, with a choice of side or bottom fixing.

The inclusion of anti-corrosive grease and steel spiral assembly ensures a trouble-free and silent operation.
Above 100 lbs, balances can be doubled up and used in tandem.

	Up to	Up to	Up to	Up to
Weight lbs	40	65	83	100
Groove Dimension	17 mm sq.	18 mm sq.	21.5 mm sq.	27 mm sq.

Groove dimensions of balances over 48" may differ.
Please enquire.

Accreditation

TEST NUMBER 2295 COLUMBIA UNIVERSITY TESTING LABORATORIES APRIL 11, 1932, W.J. KREFELD, ENGINEER OF TEST
Test of Operation	Test of Corrosion MADE BY COLIN G.FINK, Ph.d.
A. Method of Test: 1. Sash operating up and down in a frame simulating window action. Test continued for 50,000 cycles.	A. Method Of Test 1. Salt Spray Test of 80 hours as described by U.S. Bureau Standards.
B. Results of Test: 1. Operating characteristics unchanged. 2. The weight supporting ability of the balance unchanged. 3. Twisted rod showed no appreciable wear. 4. Rotating bushing slot showed some wear but without any appreciable effect on operation	B. Results of Test: 1. Spring almost entirely free of rust. 2.Spiral and tube showed several minor rust spots. 3.In the opinion of Professor Fink, these sash balances when used as intended , may in so far as corrosion resistance is concerned, be expected to last indefinitely.
CONCLUSION: 50,000 CYCLES IS EQUIVALENT TO OPENING AND CLOSING ANY WINDOW IN ACTUAL OPERATION ONCE A DAY FOR 137 YEARS. WE THINK THIS IS CONCLUSIVE

Fitting Instructions

The following information is available to assist you in fitting your Spiral Sash Balances

Spiral Sash Balances - Type 'D' Balances Click Here

Spiral Sash Balances - Type 'F' ,'K' and 'M' Balances Click Here