Chatwood of Bolton, and later Shrewsbury, built safes and strongroom doors for banks from Istanbul to Singapore, then merged with Milner to make the Chatwood-Milner safes that turn up in so many post-war offices and shops. If one of those has ended up with you, here’s the history, the models and how to date yours.
1861
Samuel Chatwood trading alone in Bolton
29 min
to wedge open the doors of Herring’s challenge safe, Paris 1867
£13,000
Ottoman Bank safe order, 1891
1958
Chatwood-Milner sold to Chubb
Key takeaways
- Samuel Chatwood (1833–1909) founded the business in Bolton around 1859–61 and called himself a bankers’ engineer: the firm made safes, strongrooms and doors, never household locks.
- The works moved to Shrewsbury in the mid-1920s, so “Shrewsbury” on a Chatwood plate means about 1925 or later.
- Chatwood merged with Milner in 1956 to form Chatwood-Milner, which Chubb bought in 1958. The name was dropped in 1971.
- Many Chatwood-Milner safes from 1959 onwards are Chubb designs in Chatwood-Milner livery, usually painted grey.
- They are heavy: a Duplex Minor weighs about 355 kg and a Duplex Major about 570 kg, while anti-blowpipe and export Monarch models run to a tonne or more.
In This Article
Chatwood at a glance
| Country | England (Bolton, Lancashire; Shrewsbury from the mid-1920s) |
| Founder | Samuel Chatwood (1833–1909), engineer and inventor |
| Trading names | Chatwood & Dawes (to 1861); Chatwood’s Patent Safe & Lock Co. (1864–1909); Chatwood Safe Co. Ltd (1909–c.1945); Chatwood Safe & Engineering Co. (c.1945–1956); Chatwood-Milner Ltd (1956–1971) |
| Works | Lancashire Safe and Lock Works, Bolton; Harlescott, Shrewsbury (from 1925–26) |
| London offices | 120 Cannon Street; 76 Newgate Street; 56 Gracechurch Street; Chatwood-Milner at 58 Holborn Viaduct, then 44–45 Chancery Lane |
| Known for | Bank safes, strongrooms and strongroom doors; “intersected steel”; the Duplex safe |
| Fate | Part of the Hall Engineering group; merged with Milners in 1956; owned by Chubb from 1958; name dropped in 1971 except for some export markets |
History of Chatwood safes
Samuel Chatwood, bankers’ engineer
Samuel Chatwood was born at Edenfield, Lancashire, on 27 September 1833. According to his obituary he set up the business that bore his name at the age of 26, and besides safes he invented improvements to steam hammers, boilers, mechanical stokers and colliery plant, and a hydraulic balance for lifts that was widely used.1
His first firm was a partnership with William Dawes in Bolton, making “iron safes, locks, and sewing machines”. It was dissolved in 1861 and Chatwood carried on alone; Chatwood’s Patent Safe and Lock Co. was registered in 1864.2,3 (Safeman.org.uk dates Chatwood & Dawes to 1861–1864, and the BSVTA history places the works in Liverpool, but the 1861 London Gazette notice and Chatwood’s own letters of 1867, headed “Lancashire Safe and Lock Works, Bolton”, settle both points.)4,5
Chatwood had a firm view of what he was: a bankers’ engineer, not one more lock and safe maker, and his company never made domestic locks at all.6 Its adverts of 1881 listed two gold medals from the Paris Exhibition of 1878 and first awards at Sydney in 1880 and Melbourne in 1881.3 Its catalogue for 1914 listed fireproof and burglar-proof safes, strongrooms for banks, strongroom doors and fittings, locks, and cash and deed boxes.7
Timeline
- 1860 Patent No. 1308: molten metal run in between two plates.
- 1861 Chatwood & Dawes dissolved; Samuel Chatwood continues alone in Bolton.
- 1864 Chatwood’s Patent Safe and Lock Co. registered.
- 1867 The “Battle of the Safes” with Silas Herring at the Paris Exhibition.
- 1878–1881 Gold medals at Paris (1878) and first awards at Sydney (1880) and Melbourne (1881).
- 1892 Safe rooms for the Ottoman Bank’s new head office in Galata open.
- 1909 Samuel Chatwood dies; the company is reformed as the Chatwood Safe Co. Ltd.
- 1925–1926 New factory at Harlescott, Shrewsbury; Bolton later closes.
- 1956 Merger with Milners Safe Co. to form Chatwood-Milner.
- 1958–1971 Owned by Chubb; the Chatwood-Milner name is dropped in March 1971.
Two bodies, molten iron and “intersected steel”
Chatwood’s answer to the drill was to build a safe as two bodies, one inside the other, and pour molten iron into the gap so that it chilled hard against the plates. His 1860 patent covered “fluid metal run in between two plates”, and his patent No. 585 of 1865 refers to Franklinite and cast steel. Against wedges he used a curved, wavy door edge, the “curvilinear” door, and claw-shaped bolts that slid behind projections on the frame.8,9
From 1868 the filling was spiegeleisen, an iron-manganese alloy Chatwood sold as “intersected steel”. His top List 8 safe of 1880 had an inch of it cast between two half-inch steel plates, and the same material later proved useful against cutting torches.10,11 George Hayter Chubb, a rival, wrote in 1875 that the number of Chatwood’s patent applications was “large”, that the finish was good and the construction elaborate, then added a line worth remembering if you ever have to move one:8
“Some of his safes are very ponderous.”
George Hayter Chubb, 1875
From Bolton to Shrewsbury
Samuel Chatwood died on 2 December 1909. That year the Patent Safe and Lock Co. was wound up and replaced by the Chatwood Safe Co. Ltd.1,7 In 1925 the company built a new factory in Shrewsbury and the Bolton works later closed; a Chatwood-Milner manager gives the move as 1926.7,6 The works were at Harlescott, on the northern edge of the town.12 For dating, this is the move that matters: Bolton on the plate means before it, Shrewsbury after.
Control later passed to the steel merchants Hall and Pickles, part of the Hall Engineering group, and around 1945 the firm became the Chatwood Safe and Engineering Co. At the 1947 British Industries Fair it showed fireproof and burglar-proof safes, fireproof filing equipment, strongroom doors and constructions, and safe deposit vaults.6,13,14 From 1930 Shrewsbury also made Chatwood’s “Spiral Reinforcement” for concrete strongrooms, still supplied to banks and the Post Office decades later.6
The 1930s brought two best-sellers. The Duplex reversed the usual order, with the thicker plate inside, concrete between, internal hinges and fixings to bolt it to the floor; safeman.org.uk calls it the best-selling thief-resisting safe of all time. The Texagen household safe had an outer body of cast concrete.15
The merger with Milner
By the mid-1950s Hall Engineering owned both Chatwood and Milners Safe Co. of Liverpool.14 In 1956 the two were combined as Chatwood-Milner Ltd, and in 1958 Hall Engineering sold Chatwood-Milner to Chubb.16 Which of the two it was depended on who you asked. A manager who joined in 1959 recalled that former Milner staff called it a merger, while Chatwood people called it a takeover, and that Chatwood men held most of the senior posts.6
Chatwood-Milner safes (1956–1971)
Chatwood-Milner is the name many owners search for, and quite possibly the one that brought you here: its safes went into post-war offices, shops, banks and Co-operative stores. The company ran from the former Milner office at 58 Holborn Viaduct, London EC1, moving in 1967 to 44–45 Chancery Lane, WC2, until it was dissolved in March 1971. It also had a service department at 54–56 Compton Street, EC1, and branches in Birmingham, Bristol, Glasgow, Manchester, Leeds and Liverpool.6
Chatwood-Milner timeline
- 1956 Chatwood Safe and Engineering Co. and Milners Safe Co., both in the Hall Engineering group, become Chatwood-Milner Ltd.
- 1958 Hall Engineering sells Chatwood-Milner to Chubb.
- 1959 Chubb’s Commerce and Standard Anti-Blowpipe safes go on sale as the Chatwood-Milner Duplex Drill-resisting and Duplex Anti-blowpipe.
- 1960 Speke stops making security equipment; Merlin and Document safes move to Shrewsbury, Manifoil locks to Chubb’s Wolverhampton works.
- 1962 The Duplextra Mk 1, 2 and 3 arrive, Chatwood-Milner versions of Chubb’s new TDR safes.
- 1967 Head office moves from Holborn Viaduct to Chancery Lane.
- 1971 Company dissolved in March; the name survives only in some export markets.
The timeline follows the Chubb Archive account by Philip Pascoe, who joined the company in 1959, and the Birmingham Daily Post reports of 1956 and 1958.6,16 Not every source agrees. The BSVTA history gives 1959 for the Chubb purchase and 1964 for the closure of Speke.17
Chatwood-Milner models and ranges
For the first few years the company sold the two founders’ designs side by side. After Chubb took over, the ranges converged: from 1959 Chubb’s Commerce and Standard Anti-Blowpipe safes were sold under Chatwood-Milner names, with modified hinges and a single dark grey finish instead of Chubb’s two-tone paint, and from 1962 the Duplextra range repeated Chubb’s three strengths of TDR (torch and drill resisting) safe. The BSVTA history puts it bluntly: Chatwood-Milner safes became “badged products” of a second Chubb production line.6,17 How TDR changed Chubb’s own range is covered in our history of Chubb safes.
| Model | Years | What it is |
|---|---|---|
| Duplex Minor and Major | 1930s design, sold throughout | Chatwood’s concrete-filled cash safe, popular with the Co-operative societies; a Mk 2 version was catalogued |
| Duplex Drill-resisting | From 1959 | Chubb Commerce safe in Chatwood-Milner livery |
| Duplex Anti-blowpipe | From 1959 | Chubb Standard Anti-Blowpipe safe in Chatwood-Milner livery |
| Duplextra Mk 1, Mk 2, Mk 3 | From 1962 | Chubb TDR safes, first to third strength (Mk 3 the bankers’ grade) |
| Merlin | Milner design; Shrewsbury from about 1960 | Light safe to compete with Chubb’s Stafford; “Merlin” is an anagram of Milner |
| Document safe | Milner design; Shrewsbury from about 1960 | Slightly heavier than the Merlin |
| Treasury | Chatwood design | Heavy cash safes, mostly taken by the Midland Bank for use inside its vaults |
| Anti-blowpipe (Chatwood) | Made at Shrewsbury for some years | Also supplied to Chubb’s salesmen, who sold it as the Totfield |
The table follows the Chubb Archive, with the Mk 2 Duplex from a Chatwood-Milner catalogue reproduced by a dealer.6,18 Safe engineers’ lists of discontinued Chatwood-Milner ranges add the Chancery, Crown, Regent, Royal Acme, Viscount, Leyton, Shrewsbury, Duplex EDR and a “W” series; we haven’t yet found catalogues that date these.19 For banks, Chatwood-Milner sold Milner’s 3½-inch anti-blowpipe strongroom door until Chubb’s 3½-inch door replaced it, in a slightly modified Chatwood-Milner edition made from 1960 at the Hobbs Hart works in Leyton, east London.6
Sizes, weights and cash ratings
Original catalogues and today’s dealer listings give these figures. Chubb later sold the Duplex Minor and Major under its own name, and its brochure gives the same outside sizes, so the figures apply to both badges.20,18
| Model | Outside size (H × W × D) | Weight | Rating advertised today |
|---|---|---|---|
| Duplex Minor | 650 × 490 × 490 mm | About 355 kg (7 cwt) | £6,000 cash |
| Duplex Major | 780 × 620 × 630 mm | 565–584 kg (11¼ cwt) | £6,000 cash |
| Duplex Anti-blowpipe (one size) | 844 × 641 × 704 mm | 778 kg | £10,000 cash |
| Duplex Anti-blowpipe “E” | 1,378 × 768 × 781 mm | 1,550 kg | £10,000 cash |
Cash ratings are set by insurers, not by the maker, and they change. We haven’t found the ratings these safes carried in the 1960s. The figures above are what UK dealers advertise for reconditioned examples today: £6,000 cash or £60,000 valuables for the Duplex Minor and Major, and £10,000 or £100,000 for the Duplex Anti-blowpipe. One dealer files them alongside modern Grade 0 and Grade I safes respectively.18 Treat these as a starting point and confirm with your own insurer, who may also ask for the safe to be serviced and anchored to the floor.
Locks and keys
Most Chatwood-Milner cash safes have a lever key-lock. The Chatwood-Milner Duplex catalogue specifies a “ten-lever double bitted key-lock” with rustless keys supplied in duplicate, and a secondary locking device (a relocker) that works automatically every time the safe is locked, in case explosives disturb the normal lock. Chubb’s own Duplex brochure specifies a seven-lever lock.18,20 Instead of a key-lock, buyers could order a Manifoil three-wheel combination lock, and the Duplex Major could take two locks, keys or combinations in any pairing.18
The Manifoil keyless combination lock was designed and made by Milners. Chatwood-Milner was making an improved Mk 2 when it joined Chubb; a Mk 3 followed in the 1960s to meet Ministry of Defence requirements, and a Mk 4 at the end of the decade.6 Original keys are often stamped with the lock’s number. One collector has a Milner lock with a correctly numbered key stamped “Chatwood-Milner”; forum members thought it most likely a replacement cut by the firm years after the safe was made.21 So a matching number doesn’t prove a key is original. If your keys are missing, a safe engineer can usually make new ones or change the lock, and will normally ask for proof that you own the safe.
Dating a Chatwood-Milner safe within 1956–1971
Fifteen years under the Chatwood-Milner name isn’t a long window, but a few clues narrow the date further.6,18,20,17 For clues that work on any maker, see our guide on how to date an old safe.
| Model name Duplex Drill-resisting or Duplex Anti-blowpipe | 1959 or later |
| Model name Duplextra Mk 1, 2 or 3 | 1962 or later |
| 58 Holborn Viaduct on a label, transfer or paperwork | Before 1967 |
| 44–45 Chancery Lane | 1967–1971 |
| Single dark grey or smoke grey paint with chromium-plated furniture | Typical Chatwood-Milner finish; Chubb’s own safes of the time were two-tone |
| Same safe badged Chubb | Chubb also sold the Duplex Minor and Major under its own name; the badge tells you the seller, not the design |
| Safe made at Speke, Liverpool | 1960 or earlier (1964 by the BSVTA’s date) |
Chatwood-Milner’s own order books and safe progress book for 1955–1971 survive at The London Archives (see below), so a serial number may one day be matched to an order.22
Abroad: export markets and the American “Monarch”
When Chubb dropped the name at home in 1971, it kept Chatwood-Milner for export markets where Milner and Chatwood-Milner were well known, “especially in Africa and the Far East”.6 The name also turns up in the United States. A brochure for Chatwood-Milner “Monarch” money and jewellery safes, distributed by the Empire Safe Company of New York, describes a body of torch and drill resisting armour cast in one piece, a 7½-inch door, a ten-lever key-retaining lock plus a five-movement combination lock, and a two-tone grey finish with a stainless steel lock panel.23
The Monarch’s six sizes match the Chubb Trident exactly, and Empire Safe says Chubb used the Chatwood-Milner name for the Trident in the US from the 1970s.24,25 These are heavy safes: the brochure lists weights from 1,624 lb (about 737 kg) for the smallest to 5,040 lb (about 2,286 kg) for the largest.23 American dealers resell them as “TRTL-30×6 equivalent”, which is a seller’s comparison, not a UL listing.26 More recently Chubbsafes revived the name for its “Chatwood Certified” range, modern safes certified to European grades IV to VI, so a safe marked that way isn’t a Chatwood-Milner, whatever the name suggests.27
Did you know?
On a Monarch the model number is the inside size in inches: a 342019 is 34 inches high, 20 wide and 19 deep inside. Chubb’s Trident uses the same system, shortened to 3420.23,24
How to identify and date a Chatwood safe
The good news is that Chatwood’s own records survive: the Chatwood Safe Company’s lock and safe registers and progress books (1864–1956) and Chatwood-Milner’s order books (1955–1971) are held by The London Archives with the Chubb records, reference CLC/B/002/CH and CLC/B/002/CHM.22 The catch is that nobody has published them yet, so for now these clues will have to do.
Clue 1
The name on the plate
“Chatwood & Dawes”: 1861 or earlier. “Chatwood’s Patent” with Bolton: 1860s to 1909. “Chatwood Safe Co. Ltd”: 1909 or later. “Shrewsbury”: about 1925 or later. “Chatwood-Milner”: 1956–1971.2,7,16
Clue 2
Body construction
Square bodies of dovetailed wrought-iron plate: to the 1890s. Four- and eight-corner bent steel bodies appear around 1895, and twelve-corner bent bodies by about 1920. Concrete-filled Duplex bodies date from the early 1930s on.4
Clue 3
Model names
“List” numbers 1 to 8: Victorian. Merchant, Securities, Treasury and Diamond: around 1900. Standard Quality and Special Diamond: around 1920. Duplex, Household, Texagen and Cylinder: 1928 onwards.4
Clue 4: addresses and badges
Some Chatwood plates, like this one, name a local agent instead of the factory, which tells you where the safe was sold rather than when. Where a Chatwood address appears, these are the years it is recorded:5,1,4,7,6
| Lancashire Safe and Lock Works, Bolton | Recorded 1867–1868 |
| 120 Cannon Street, London | Recorded 1878 |
| 76 Newgate Street, London | Price list of about 1895 |
| 56 Gracechurch Street, London EC | Recorded 1907 |
| Shrewsbury | From 1925–26 |
| 58 Holborn Viaduct, EC1 (Chatwood-Milner) | 1956–1967 |
| 44–45 Chancery Lane, WC2 (Chatwood-Milner) | 1967–1971 |
Royal warrant transfers help too. The Shrewsbury transfer pictured on this page reads “makers of safes to the late King George VI”, so it was applied after the King’s death in February 1952.28
Clue 5: serial numbers
Chatwood numbered its safes, and a few dated examples give reference points. It’s a short list, all from safes described by safeman.org.uk, and we’ll add confirmed examples from readers.29,4
| List 4A with inner coffer (no number given) | c.1890 |
| No. 26696, Diamond quality | c.1905 |
| No. 37404, Cylinder safe | c.1928 |
| No. S 50355, early Duplex | c.1930 |
Notable Chatwood safes and strongrooms
The Battle of the Safes, Paris 1867
At the 1867 Paris Exhibition the New York maker Silas C. Herring hung a notice on his bankers’ safe challenging any other exhibitor. Chatwood accepted. His own workmen, using ordinary burglars’ tools, opened Herring’s challenge safe in 29 minutes, then broke into the inner chest that Herring had added to the terms, finishing the next morning. Herring’s German operatives needed 232 minutes to break into Chatwood’s safe through a side joint.10,5
Which leaves the awkward question of who actually won. Counting the inner chest, Chatwood’s men worked for about 254 minutes in all, so on the agreed terms the clock favoured Herring, as the London journal The Engineer conceded, while arguing the margin could fairly be explained away.30
The judges, without the two English members, found for Herring; a Paris tribunal declared that judgement void the following year, with costs against Herring.10 George Augustus Sala told the story, from Chatwood’s side, in The Battle of the Safes (1868).5 Contests like this are part of our history of safe-cracking.
The Ottoman Bank’s “steel fort”, Istanbul 1892
When the Ottoman Bank built its new head office in Galata, it ordered its safe rooms from Chatwood. The Istanbul newspaper Sabah reported in May 1891 that the bank had ordered a very large safe from London worth £13,000, to be shipped in pieces and installed by the maker’s own men. The building opened on 27 May 1892, and the Chatwood’s Patent Safe doors survive, as the photograph at the top of this page shows.31
Chatwood versus Ratcliff & Horner, 1892
Ratcliff & Horner, the new London firm later known as Ratner, claimed its safe doors could not be drilled. Chatwood drilled one; Ratcliff & Horner said the plate had been softened by heating first. The dispute reached the High Court in December 1892, which found for Chatwood, with £600 costs. The ruling didn’t end the argument. Ratcliff & Horner replied by tearing the door off a Chatwood List 5 with a giant forcing screw, and Chatwood answered with tests of its new bent-steel List 5.32,4
Banks, night safes and vault doors
A Chatwood transfer of the 1950s describes the firm as “makers to the Bank of England”, and Chatwood doors survive far from Shropshire, such as the vault door in the Empress Place Building in Singapore, now the Asian Civilisations Museum.28 The BSVTA history credits Chatwood with installing the first bank night deposit safe, for the Midland Bank in 1930.17 For the vaults these doors guarded, see the world’s most secure bank vaults.
Myths and unverified claims
Chatwood was a Liverpool firm.
Chatwood was in Bolton until the mid-1920s, then Shrewsbury. Liverpool was Milner’s town.
Chatwood lost the 1867 Battle of the Safes.
The verdict for Herring was declared void by a Paris tribunal in 1868.
Chubb bought Chatwood-Milner in 1959.
The sale was reported in July 1958.
Every Chatwood-Milner safe is an old Milner or Chatwood design.
From 1959 several ranges were Chubb safes sold under the Chatwood-Milner name.
I have a Chatwood or Chatwood-Milner safe: what now?
Weight
How heavy is it?
Very. A 65 cm Duplex Minor weighs about 355 kg, a 78 cm Duplex Major 565–584 kg and a 1.4 m Duplex Anti-blowpipe 1,550 kg.18 Measure it, compare with the table above, and read how much an old safe weighs before anyone tries to move it.
Opening
Locked out?
Call a qualified safe engineer. Chatwood-Milner safes were built with relockers, so forcing the door can lock it for good and wrecks its value.18 An engineer can open it with least damage, then cut new keys or change the lock.
Value
Is it worth anything?
Post-war Chatwood-Milners are valued as working security safes, so keys, lock and an insurer-accepted rating matter more than age. Reconditioned ones sell for hundreds of pounds, not thousands.33
Not sure which Chatwood you have? Send us photos of the plate, the keyhole and any serial number, with the outside height, width and depth, and we’ll help you date it. Our step-by-step guide for anyone who has inherited or found an old safe covers value, moving, lost keys and selling. If you’re thinking of buying one, read our guide to buying a second-hand safe.
Frequently asked questions
Who made Chatwood safes?
Samuel Chatwood’s company of Bolton, Lancashire, from around 1861, which moved to Shrewsbury in the mid-1920s. From 1956 the safes were made by Chatwood-Milner, owned by Chubb from 1958.
How old is my Chatwood safe?
Check the name and town on the plate (Bolton before about 1925, Shrewsbury after), the body construction, the model name and the serial number against the tables above.
How much does a Chatwood-Milner safe weigh?
About 355 kg for a Duplex Minor (65 cm tall), 565–584 kg for a Duplex Major (78 cm) and up to 1,550 kg for a large Duplex Anti-blowpipe. American Monarch models weigh 737 to 2,286 kg. Treat any figure as a guide and ask a safe remover.
How do I open a Chatwood-Milner safe without the key?
Contact a qualified safe engineer or locksmith who specialises in safes, with photos of the lock and any number on it. They can open it with the least damage and make new keys; forcing it yourself can trigger the relocker.
What is a Chatwood-Milner safe worth?
As an informal guide, not an appraisal: in October 2026 UK dealers were asking £375 to £850 plus VAT for reconditioned Duplex models, plus delivery and installation. An unserviced safe sold where it stands usually fetches much less, because the buyer pays for moving, servicing and often new keys.
Which Chatwood-Milner model do I have?
Look for a model name on the door or inside it, then measure the outside height, width and depth and compare with the tables above. A grey safe about 65 cm tall may well be a Duplex Minor, one about 78 cm a Duplex Major.
What insurance rating does a Chatwood-Milner safe have?
There’s no fixed rating. Dealers today advertise reconditioned Duplex Minor and Major safes at £6,000 cash and Duplex Anti-blowpipe safes at £10,000, but only your insurer can say what it will accept for your safe.
Where can I buy or sell a Chatwood-Milner safe?
Specialist safe dealers buy, recondition and resell them, usually with delivery and installation. Private sales and auctions are cheaper, but the buyer must arrange a safe remover and a safe engineer.
When did Chubb take over Chatwood-Milner?
In 1958. Chubb kept the Chatwood-Milner name until March 1971, and longer in some export markets.
Sources:
- Grace’s Guide, “Samuel Chatwood”, quoting his obituaries in Engineering (24 December 1909) and the Iron and Steel Institute (1910). ↩︎
- Grace’s Guide, “Chatwood and Dawes”, quoting the London Gazette, 17 September 1861. ↩︎
- Grace’s Guide, “Chatwood’s Patent Safe and Lock Co”. ↩︎
- safeman.org.uk, “Safeman’s scrapbook: Chatwood safes from 1861 to 1939”. ↩︎
- George Augustus Sala, The Battle of the Safes, or British Invincibles versus Yankee Ironclads (London: Tinsley, 1868), via Internet Archive. ↩︎
- Philip J. Pascoe, “Chatwood-Milner Ltd: a brief background to Chatwood and Milner history, 1956–1971”, The Chubb Archive, 2008. ↩︎
- Grace’s Guide, “Chatwood Safe Co”, citing the London Gazette (1909), Whitaker’s Red Book (1914) and the Birmingham Daily Gazette (14 December 1925). ↩︎
- George Hayter Chubb, Protection from Fire and Thieves (1875), chapter on safes and table of patents, via Project Gutenberg. ↩︎
- safeman.org.uk, “The improvements”. ↩︎
- safeman.org.uk, “Battle of the Safes: safe-breaking contest, Paris Exhibition 1867”. ↩︎
- safeman.org.uk, “Coming of age: from iron to steel”. ↩︎
- Historic England, Britain from Above, “The Chatwood Safe Co Ltd Works and Harlescott Crescent, Harlescott, 1946” (EAW001107). ↩︎
- Grace’s Guide, “Chatwood Safe and Engineering Co”, citing the 1947 British Industries Fair catalogue. ↩︎
- Grace’s Guide, “Hall Engineering”. ↩︎
- safeman.org.uk, “Modern times”. ↩︎
- Grace’s Guide, “Chatwood-Milner”, citing the Birmingham Daily Post, 4 April 1956 and 30 July 1958. ↩︎
- Alan Bullock (Insafe International), “A history of the British safe industry”, British Safe and Vault Trade Association. ↩︎
- Chatwood-Milner Duplex catalogue text and specifications in dealer listings (checked 26 October 2026): BDB Safe and Vault, “Chatwood Milner Minor”, “Chatwood Milner Major” and “Chatwood Milner Duplex Anti Blowpipe”; A to Z Safes, “Chatwood Milner Duplex Major Mk2” and “Chatwood Milner Duplex Anti Blowpipe E” (with catalogue text). ↩︎
- Bradley’s Master Locksmiths, “Discontinued safes”. ↩︎
- Chubb & Son’s Lock & Safe Co., Chubb Duplex Safes, brochure ref. 410A (London: Totfield House, undated), copy in the Empire Safe Company brochure library. ↩︎
- Antique-Locks.com forum, “Milner lock with Chatwood Milner key”, March 2018. ↩︎
- AIM25 / The London Archives, “Chubb and Son Limited, locksmiths and safe manufacturers”, ref. CLC/B/002. ↩︎
- Chatwood-Milner, Monarch Money and Jewellery Safes, brochure distributed by the Empire Safe Company, New York (undated), via Empire Safe Company. ↩︎
- Chubb & Son’s Lock & Safe Co., Chubb Trident Safe, brochure (London: Totfield House, undated), via Empire Safe Company. ↩︎
- Empire Safe Company, “Brochure library”, notes on the Chatwood-Milner Monarch and Chubb Trident (dealer’s account). ↩︎
- Lackasafe, “3420 Chatwood Milner TRTL30X6 equivalent high security used safe” (US dealer listing, checked 26 October 2026). ↩︎
- Chubbsafes, Chatwood Certified Series, brochure, via Empire Safe Company. ↩︎
- Jacklee, “Chatwood vault door, Empress Place Building, Singapore”, Wikimedia Commons, 2015. ↩︎
- safeman.org.uk, “Safe museum”. ↩︎
- The Engineer, 30 August 1867, pp. 169–171, “The French International Exhibition” (report on the Herring and Chatwood safe trial), scan via The Engineer archive. ↩︎
- SALT Research, Ottoman Bank Archives, “Ottoman Bank, safe rooms”, quoting the newspaper Sabah, 16 May 1891. ↩︎
- safeman.org.uk, “Unfair tactics”. ↩︎
- Asking prices for reconditioned safes, checked 26 October 2026: BDB Safe and Vault, Duplex Minor £375 and Duplex Anti Blowpipe £525, both plus VAT and delivery; A to Z Safes, Duplex Anti Blowpipe E £850 plus VAT (listings as above). Prices change; quoted only as an indication. ↩︎
