Unusual long beak square chamber escargot – referee type antique whistle
Le Sifflets (The Whistle)Book by Jacques Bokobsa, Hisory of a Whistle Collection
The most fascinating and outstanding book about whistles to have come in decades,
I will write more and more, edit this and bring more photos as well as edit the post, a jaw dropping large heavy book with over 300 pages in a generous format of
app. 20 + by 30 cm. A must for any whistle enthusiast. researcher, Collector and scholar.
Le sifflet (The WHistle) History of a Collection by Jacques M. Bokobsa,
a world class legendary collector.
Preface by Pierre Catanes a leading scholar, and outstanding photos by
Gilbert Nencioli. Appolgies for Photos that do injustise with the fantastic book & photos, I had to share my excitement, this book will take weeks to look thru enjoy admire and learn.
To be continued… ( A. Strauss )
Clay Whistles, Russian Pottery Whistles. Guest Post.
Russian Folk Art Pottery Clay Whistles with Woman Figures. M. Oboeva
During the years I developed a growing interest in CLAY & POTTERY WHISTLES,
first as an amateur collector of these and gradually studying and developong this niche of collecting & study. While doing so I had the pleasure of meeting some great & knowledgeable collectors.
Pottery – Clay Whistles had been a subject I had not written about in my blog here, but it is time to start, Clay whistles of different countries Whistles, have typical features , and may be more so with traditional Folk Art.
I have asked my honorable guest, Marianna Oboeva to send 10 photos and few words as intoduction to Russian Pottery Clay Whistles.
She chose the subject of Women Figures (All whistles).
So I leave the stage to a short guest article from Marianna Oboeva a collector,
an Artist and expert on Russian whistles, that chase the theme of feminine figures within the subject of Russian Folk Art Clay whistles, In her own words, with Photos.
William Dowler & Sons Whistle Manufacturer History and Timeline A. Strauss
Part III a (See Part I & II William & George Dowler
History and Timeline of ‘William Dowler & Sons’ Whistle, Button & Military Ornaments Manufacturers. In 6 Parts.
Continue reading William Dowler & Sons Whistle Manufacturer History and Timeline A. Strauss
This article (Part III a) focuses on the Birmingham Whistles,
Military Ornaments and Button manufacturer William Dowler, later ‘William Dowler & Sons’. It is the continuation of the first article, and an on going research of 15 years, some of the first finds were posted here in 2008 and in the Wikipedia
and in 2015- 2016 a revised article about the family which established their business in 1776.
See Link, William & George Dowler which presented
the family’s history and work.
George Dowler had the bigger manufacturing plant and
manufactured whistles which were advertised but not identified to this day, continuing the family’s plants & manufacturing business up to 1870,
it was ‘Willian Dowler’ who was the bigger Whistle manufacturer, He started working independently in 1853 and took over the family’s assets in 1876.
In fact seeing the whole picture we can say that since 1853 William took an independent path and only in 1876 after legal fights gained control of the other various family plants and assets which George was running up to 1870.
Thus between the years 1853 – 1870 There were two different manufacturers;
one is Dowler – Birmingham, the other W. Dowler -Birmingham.
Georgian Period Whistles, Cast Iron Whistles. A. Strauss
Georgian Period Whistles, British made whistles in the Pre Victorian times were a theme I was interested in for over a decade, New antique whistles surface here and there and throw light on the development of ‘Professional’ Round whistles, time line and makers, of which little is known about. *
But these certainly give a new perspective to the term IRONMONGERS in the 17th 18th 19th century who were making whistles, and which later became more Brass Founders I believe.
Before I put many of the thoughts, comments & observations on these,
I share some of mine and others, Needless to say all very rare.
Starting with a Trio of Military whistles from my own collection,
most possibly by J. Dixon of Sheffield very early 1800, These include few amazing features for the whistle student and scholars who have a keen eye.
The sound is of each one is outstanding, (I am tempted to say the best I heard ) Interestingly the trio forms the sound of a triad chord,
I will edit and add comments later.(There is a LOT to be said and learn)
= Continue reading Georgian Period Whistles, Cast Iron Whistles. A. Strauss
Dowler & Sons, The Whistle Manufacturer History and Whistles. Avner Strauss
Part I & II Part III
I first wrote Dowler’s history (AS whistle makers) in 2008
posted in Wikipedia and updated with more info whistle photos from my collection and articles updated later.*
It is updated and concise here as I omit much of the vast info and collected since.
The Dowler Family were Brass manufacturers since the 18th Century
established 1766 at 91 & 92 Gt. Charles Street Birmingham, later known as the Dowler’s Arm a small waterways on the Birmingham Fazeley Canal.
They may have earlier history as Brass founders.
It is the author belief they also made whistles in their earlier years
but this remains as an educated guess as of now.
The Essay is long and would be in Few Parts
Part 1 Brief History
Part 2 George Dowler
Part 3 William Dowler Manufacturing History, spun over 50 years, He is the DOWLER we know from his many whistles, Buttons, and Military ornaments.
The 3rd part shall be the most detailed part concerning WHISTLES.
William Dowler was the first pioneer to supply Police forces in England with a Force name with Two Notes Conical (TNC) Type Whistles (Also Known as Beaufort ).
It is divided to few sub – parts, and 6 periods.
Dealing with various whistle types.
General note regarding time line.
Mary Dowler was a dominant figure in the early part of the 19th century
Her sons George and William kept the business, 1816 Directory Clip.
In the 1840s George Dowler was running a successful manufacturing career being an inventor and maker of numerous brass goods.
In 1853 William Dowler opened his independent work shop in partnership with Charles Parker (D. 1852) daughter Marry Hanna Parker, in 42 Cherry St. Birmingham.
I shall start with George for a short paragraph since we can not identify the whistles he made at this point (One is identified), and then discuss William Dowler (Later & Sons) who is the one associated with whistle manufacturing among collectors.
General Early History
Dowler firm was established in 1776 in Birmingham.
we know this from George Dowler advertisements by Thomas Dowler, There are various brass founders named Thomas Dowler at the 2nd part of 18th century and since it was common to name the son after the father at times for few generations it is difficult to establish the accurate history so I leave this complex Geneaology research at this point.Thomas Dowler I 1752 -1805
Mary Dowler 1755 – 1825
Had 7 Children :
Thomas Dowler II 1777 1852
Joseph Dowler 1779 1837
William Calley Dowler (The 1st) B. 1782 D. 1825
George Augustus Dowler 1781 1827
Sara Dowler 1826 – 1868
Mary Ann Dowler 1785 1851
Ann Robbins Dowler 1787 1868
Thomas Dowler (Son ) 1877 1852
Joseph Dowler 1779 1837 & Hanna Sadbury Dowler 1780 1866
Were the parents of the two famous whistle makers :
William Colley Dowler 1813 – 1888
George Dowler 1824 – 1901
William Colley Married Hanna Dowler (in 1850 ) their children
Arthur P. Dowler (B 1860) A Button Manufacturer
Thomas William Dowler A Jeweler & Button Manufacturer
Austall Edwin Dowler (B 1850)
The first two were the ones who joined the buisiness in 1866 (Dowler & Sons)
Thomas & Mary Dowler were the dominant figures in the early part of the 19th century, The family history is complex & perplexing, Listed as early as 1815 as
Mary Dowler & Sons and as Thomas Dowler both at Great Charles St. where the family business had been since the 18th Century, The address would be the main address for well over 100 years up to 1900.
George and William kept the business, 1815 Directory Clip
Management of the Great Charles Street foundry passed down to Thomas Dowler who remained unmarried. He lived in the house attached to the foundry with three spinster sisters, Ann, Mary Ann and Sarah.
George Dowler was a nephew who took over running the firm when Thomas
Dowler II died.
George added other trades to that of brass foundry
In 1830 we see Thomas Listed as Medalist and Manufacturer of plated Knives, Forks, Spoons, Nutcrackers, Skewers, Etc. Etc. Bell Founder, Fire Iron Maker, Brass and Princes metal candlestick maker, 91 Gt. Charles St.
M (Marry) Dowler & Son, Great Charles Street, Birmingham,
candlestick maker. (Commercial Directory 1816-17)
Thomas Dowler, 91, Great Charles Street, Birmingham, brass fire furnishers and manufacturers. (Wrightson directory 1835)
In the later 1840s George Dowler, was running a successful manufacturing career being an inventor and maker of numerous brass goods, while his older brother William Dowler was distributing the family merchandise living in Soho Hill listed as a Traveler (1952)
In 1853 there is a ‘fork’ in the road and it became two different companies, Making some parallel goods, we shall start with George for a short paragraph and then discuss William Dowler.
The next 3 quotes are from a long article about DOWLER’s ARM found in 2006 upon a visit to the Birmingham Library, It was later available in full on the web.
“The increasing requirement for brass as a component in cartridges for the new breech loading rifles and bullets for handguns encouraged Dowler to also make chassepot cartridges. He also had cartridge-filling sheds at Tyburn, also near the Birmingham & Fazeley Canal.
George Dowler came to live at Knowle with his surviving aunt, Ann Robbins Dowler, who was the effective owner of the Great Charles Street Brass Foundry.
The vesta match was made by dipping wax taper in a phosphorus-rich mixture. It was an occupation that depended principally on the employment of young people and children and their prolonged exposure to the “white” phosphorus in the compound led to many being inflicted with the “Phosphorus Disease”. This horrible disease led to disfigurement and premature death.
Dowler’s Arm & Plume St.
William Dowler, military ornament and button maker of Birmingham, challenged George for control of the estate. In a rare instance two probates were proved independently by George and William. Ann Dowler had made several changes (codicils) to her will and in the final form William had joined George as executors of Ann’s estate. The dispute developed and in the Court of Chancery, the Great Charles Street Brass Foundry was offered for sale. It was a dispute that rumbled on through 1868 and 1869 to 1871 when William Dowler brought further actions and the matter was not finally settled until 1876.”
In 1858 William is listed Solo on 42 Cherry St as a Railway Whistle Maker.
George Dowler 1824 – 1901
George Dowler was one of the largest manufacturers of Brass goods in Birmingham, Making Matchsticks and numerous Brass Goods from 1840s when he took over Thomas Dowler the son, He was the Brother of William Dowler who became one of the 4 large whistle makers in England up to the mid 1880s.
In his 20s he was running the business up to March 19, 1870, when his huge factory in Aston, employing over 500 man burnt to the ground. He also was an inventor and amateur musician. I will bring few important events in his life and few examples hopefully there will be more whistles found.
In 1876 he emigrated with his wife & sons to Ontario Canada to become a farmer
& died there at the age of 77.
A speaking tube whistle with indicator made by George Dowler c. 1840s 50s, ,
a similar one without indicator was made as well, it is not a stamped one but identified by the top which is similar to his Nocturnal vesta patent of 1850.
Albeit this is the only one yet identified we know he made many types of whistles in the 50s and 60s, Including French Calls (Cast Base Metal or ? ),
Railway Guard Whistles (TNC two note conical later nick named Beaufort) &
Dog Calls (Which were round & pea whistles),
These types were advertised by him but I was not yet able to find any identifying features or stamps by which we can positively identify his whistles.
It is likely he made button whistles as well, if some will be found, they can be identified by his stamp on buttons, DOWLER BRIMINGHAM, (William his Brother stamped his as ‘W. Dowler’ and other particular stamps in various periods, see stamps in part III).
Another view with SCREW TOP taken apart.
I am convinced that Thomas Dowler made whistles earlier as well and George kept making whistles but Thomas making whistles is not supported by any finds.
Advertisement 1858 Includes French Calls.
Few important dates for George Dowler
1850 Night serenade registered design.
1852 Crystal Palace Exhibition
1856 adv. upon purchasing Allen & Moore (See Photo)
and note making FRENCH CALLS whistles among many other things.
1861 George Dowler is flourishing and one of only 20 Birmingham manufacturers to employs over 500 workers.
1862 International World Fair. (See photo & paper review)
1862 A major fire on July 10 at Great Charles Street.
1868 Death of his aunt which starts legal fights with his brother William
1870 Fatal fire which destroys his factory.
1876 End of court case about the inheritance which leaves 94 Gt Charles st and other assets with his older brother William.
1876 George Dowler immigrates, with his wife & Children, to Canada to become a farmer.
A photo from the exhibition of 1862 and a following newspaper review June 17, 1862.
Birmingham Daily Post Tuesday, June 17, newspaper clip including a review of George Dowler display including Carriage & Door alarms, railway guards & dog whistles as well as the mentioned French whistles.
In 1862 the brothers were running two different factories and making different
goods but some were parallel, as we can see from this 1862 adv. in a directory.
1862 Fire at Great Charles Street, on 10 July, 1862, A Birmingham newspaper,
part of a long paragraph about a Fire in 91 Great Charles st.
In the 1860s G. Dowler was manufacturing ammunition as well and having an office in London, Here is a 1868 Cartridge Shells box.
1870, 19th, March, THE BIG FIRE from a Birmingham newspaper
(The Illustrated Midland News).
More quotes from reading at the library;
Legal Matters Following Ann Robbins Dowler death in 1868. In 1868 a series of legal disputes with his brother William over the inheritance of the Dowler works started and carried up to 1876.
George Dowler Works, – William Dowler, military ornament and button maker of Birmingham, challenged George for control of the estate. In a rare instance two probates were proved independently by George and William.
Ann Dowler had made several changes (codicils) to her will and in the final form William had joined George as executors of Ann’s estate. The dispute developed and in the Court of Chancery, the Great Charles Street Brass Foundry was offered for sale. It was a dispute that rumbled on through 1868 and 1869 to 1871 when William Dowler brought further actions and the matter was not finally settled until 1876.
George Dowler works were the largest firm producing phosphorus matchsticks, this along with making ammunition was fatal when the fatal fire destroyed Dowler Works, known as Plume works, in Aston, 90 & 91 Gt Charles St. Birmingham.
William Dowler continued the button making business in Birmingham, whilst Cannot & Vallance acquired the Plume Works and the Tyburn Cartridge sheds.
Gustavus Augustus Cannot was also in partnership in London with a Mr Bravington. Cartridge making was continued from 1871 through to 1872, but then ceased.
Cannot then sought to sell off the Plume Works. Various problems delayed the sale until 1876, when the Plume works was finally sold to Greenway, Clive & Vale of the Peoples Hall Works in Princip Street who converted the premises to a lock and hinge factory.
1871 Suspension note of GEORGE DOWLER PlumeWorks;
The first half of the 1870s was clouded by legal fights over Ann Robbins Dowler will .
It ended in favour of William Dowler and following that in 1876 George left to Canada to become a farmer.
Here is an anecdote from a newspaper clip (shared with us by P. Owen)
that will serve us as pivot point to depart from George Dowler who actually emigrated to Ontario Canada to become a farmer, in the same year as this event took place 1876, and switch to the history of his Brother William, In PART 3.
.”Nice story of William and George Dowler. They were visiting Pershore in Worcestershire when they came across some wandering minstrels. They performed a song, for which they were paid 5d. (That was a lot). George asked if he could play on their piano (which must have been a fairly small portable one). He started playing but commented on the poor quality of it. One of the minstrels took exception and a big fight broke out. Punches were thrown at William and George ended up in a ditch with the end of his finger nearly severed. George emigrated later that year (1876)] ”
Continue to PART III
* The article I wrote 2008, 2009 and posted in the Wikipedia was erased and found its way with few other articles copied from there and from this blog to a book about whistle makers in England sold on Amazon by an anonymous writer. That is I guess the nature of the internet, when it is not a hard copy book.]
All rights reserved A. Strauss
Alexander P. Hatch American Whistle Patents, Antique Police & Bicycle whistles 1899- 1902.
Two important American whistles long searched for by whistle collectors
were found April 2019.
Alexander P Hatch Patents were thought as none existing, since none were seen and the patents applied for stated no model examples.
As to rarity we know of another Plural whistle I discovered with a long time U.S.A collector in 2016, The Police one is the only example I know of.
I imagine there are more to be discovered and there is a good chance that the more fancy variation with few combined whistles as seen on the same patent of the plural whistle is somewhere out there… (so it is with the British Plural one that I posted the patent for last year, no actual example ever seen – it is from the same period)
keep your eyes open it is a treasure probably worth well over a 1000, hopefully with more exposure to the ones that just surfaced more will show up in the future.
It is a pity that there is no information about this inventor who was a citizen of Bridgeport Connecticut at the time, I am sure an extensive research can reveal much more as to his life, Albeit the fact that his whistle patents are among the most cited by whistle inventors, dozens of newly patented whistles since then quote his patents, including 21st century ones.
Alexander P. Hatch American Whistle patents App. for 1899 & 1901
Both are made of Nickel Plated Brass.
I highly recommend reading carefully the patents description & drawings in the next links.
The one on left side is know as the plural whistle and you may see the patent drawings and description HERE at google patent storage
It was found with the original chain in an old bicycle store, in mint condition.
The whistle on the right a tube whistle with unique design and partition is stamped
POLICE DEPARTMENT and has patent date as well see google patents HERE
All rights reseved to A. Strauss Whistle museum
we are glad to help with any questions regarding whistles,
please attach photos to questions, Email: email@example.com
A Military Round Pea Whistle 18th to Early 19th Century Design Masterpiece. A. Strauss
A Round Pea Whistle, dating c. 18th century to early 19th century,
An outstanding example of a design using various geometrical elements
forming a uniquely sculpted design.
From the country were Stradivarius made his violins in the 17th & 18th Cent.
Materials: Gun Metal (a type of bronze – an alloy of copper, tin, and zinc )
& painted extra hard wood.
L: 69 mm Continue reading A Military Round Pea Whistle 18th to Early 19th Century Design Masterpiece. A. Strauss
Acme Whistles Registered 1911. Emblem Snail Whistles & Variations. Avner Strauss
Acme Whistles Registered 1911 Emblem Snail Whistles & Variations, Button Style with Embossed emblem Sides.
These whistles were registered by ACME WHISTLES,
J. Hudson & Co. Birmingham in 1911 They are similar to button whistles in having an emblem embossed on cap, and are all made of nickel plated Brass.
Reg. design # 576579 Model # 618
More Whistles (2005) Pg. 11, That ‘it was lodged but it is believed none were ever produced’. Mean while I discovered two variations so it was produced but probably in a VERY LIMITED one time edition each time.
It has only two known versions one with P. 608282/ 12 on side cap and one without embossed number.
All of the first edition bubble tops of this series are rare, some stamps & emblems are rarer.Excerpt from Acme Whistles Catalogue showing the 3 models.
The Symbols (From Wikipedia)
A shamrock is a young sprig, used as a symbol of Ireland. Saint Patrick, Ireland’s patron saint, is said to have used it as a metaphor for the Christian Holy Trinity.
The thistle has been the national emblem of Scotland since the reign of Alexander III (1249–1286) and was used on silver coins issued by James III in 1470. It is the symbol of the Order of the Thistle, a high chivalric order of Scotland.
The white of York and the red of Lancaster are joined together to make The Tudor rose, marking the union of the two houses and the beginning of a Tudor reign. The Tudor rose was used as a symbol of peace and today it is used as the symbol of England, just as Scotland uses a thistle,
Wales a leek and Ireland a shamrock.
THE MANY VARIATIONS
These Registered designs were unique to Acme whistles (see exception* ) and were popular for at least 25 years ahead in different additions and variations. Without going into all the details I will mention that there are dozens of variations, and in GENERAL they vary at 3 main features :
THE TOPS 4 TYPES
1) Bubble top
2) Humpback Tops
3) Humpback with Groove (Implied to whistle by wiring technique)
4) Flying V top (See photos below)
All the three show with these variation:
Early with reg. design number embossed on cap
Later no number NO number embossed to cap
Number embossed to cap at one side
The Tudor Rose Early with 1912 Patent stamp on cap
with or without number (Only on Tudor Rose,*)
The Acme Registered,
The Acme Registered with arched emblem name ( Rose, Shamrock, Thistle)
The Acme Registered and England above the Tooth grip.
No Stamp at all
There may be one having both the emblem name and England, I had not seen one yet.
Dating the variations between 1911 to C. late 1930s I believe, is not an easy task,
but one can rely on the various Tops & Stamps.
The price of whistles in these
whistles varies a lot and the earlier bubble tops first edition is over 100 USD if to judge by the last ones observed on eBay.
NOTE that a whistle can find a Whistle with a BUBBLE TOP and any of the Caps & Stamp variations which more than triples the variations.
Here is the Tudor rose on left (One or two known**)
and on the center and right BOTH ARE Shamrock with two different stamp variations.
So a full set of three Bubble tops
1) Numbered on side / the name of the emblem at front /
2) Another set : Bubble tops / no number on side / and the name of emblem on front / ETC.
There are at least 5 variations of a FULL Trio Bubble tops set
A complete early edition would have 15 whistles 5 sets of three bubble tops
(as in Postage stamps )/ and that does not include the tudor roses,
and and there are still 3 other style tops (None bubble series)
The Tudor Rose Close
Here one may see number P-608282 -12
1912 Patent 608282 on cap and England above tooth grip Observed only on the Tudor rose
Closeup on a Thistle Bubble top and Number on side cap
Another previously unknown earlier variation of a Bubble Top Shamrock
surfaced October 21. Found not far from Birmingham.
Probably an earlier pre patent experimental modelora.
Here on right hand is the Beak front view. for comparison.
A close inspection of construction reveals the DISTINCT Toothgrip location right at the openning of the beak upper lip, as in the 131 Barr St. I had the luck to discover in 2006, a previously unknown one, which was a major find in research & study of Hudson’s escargots timeline. since then few more 131 Barr St. variations were found.
The bubble top at the top one is of older type. (Does remind of Black & Co.)
With a very short ‘neck’ under bubble and wide base.
So we can conclude that this is an earlier variation, Pre 1911.
Multy view of a ‘named’ stamped Shamrock on beak.
Flying V Top J. Hudson & Co. Patent # 214519 / 1924 Made 1924 onward
Reg. Numbered design embossed on side cap is an earlier 1920s versionExample of a later edition 1930s with Shamrock emblem,
no emblem name on stamp, no number on cap and
HUMPBACK Top(Hamp top).
Full set of POST 1924 series but still NOTE STAMP VARIATIONS ON FRONT
reflecting period variations 1920s 1930s
While writing I encountered the next whistle which was made earlier has a button like domed sides and has the same feature as the 1911 ones, the Feature of “Folded Beak” construction with a seam which can be seen in the middle of the underside. It was used by Acme since 1894, (Dixon used it as well at the same time including domed sides, one example found in 2018)
The whistle came in 3 sizes see catalogue excerpt below, here is the smaller one model number 61 and 1/2
It has a brass salesman tag with model number, and it is an earlier one since later they used Aluminum tags.
This type was made by Hudson & Co. Acme Whistles Ltd. up to the 1970s.
Catalogue excerpt showing the 3 domed sides lite construction snail whistles
These models were later developed and in the 1930s had 4 sizes
(061 & 1/2 size added ) and another ACME LOGO embossed emblem of THE ACME logo replace the plain domed sides.
Very nice whistles and again many variations, see catalogue for 4 sizes starting
with the same 66 & 1/2 Model as the smaller but now with The Acme Logo side.
Made in 4 Sizes 1930 Catalogue
There are few more themes of embossed sides button style snail whistles by ACME WHISTLES LTD. ( J. Hudson & Co. ) of which the dog head is the most famous but I will discuss this at some other time.
- In 2005 I discovered a previously unknown similar Button style whistle with bubble top made by Alfred De Courcy, It was identified with the help of Mr. Gilchrist by the unique ‘beak’ – mouthpiece, construction which has the seam of the beak only at one side, Later on few more appeared and I realized they had few variations as well starting c. 1910s, all pre 1927 and made for the U.S.A market.
** A similar one, the Tudor Rose in silver not stamped Acme and with a wire loop
top was observed and more common, I had nor examined it carefully yet.
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Bird Call In France Apeau & Apeaux Pedal Shape Bellow Whistles for Black Bird, Merle. A. Strauss
Whistles used as Bird Calls are a huge category,
Many of the hand operated type whistles vs. Mouth whistles use a Bellow,
There are few types of Bellows. This time I will review few pedal shape bellows
made of wood & leather. The operation is by hand & the term is used because of the shape albeit I think these could be played by the foot as well.
Here are few examples of Antique Bird Calls – Whistles, 19th century to early 1900, certainly a seldom met with type.
The French and European Continent Bird Calls & are very different than the American ones, and of the far east ones.
These I believed to be folk art work of rural hunters; Tin whistle combining a mechanical element, a Bellow – Pedal shaped Bellow & Whistle, but found out some stamped bellows.
I had looked through many catalogs of bird calls – whistle manufacturers from mid 19th Century onward and had never seen one in a catalogue.
There are four different calls here all from France & Neighbouring countries (Belgium) , I would be glad to see more if the reader happens to have.
Next is one taken apart, the Tin whistle incorporating a button type whistle can be used inhaling or exhaling it seems that when attached to the Bellow it works by pressing the bellow and it omits a sound when released, but short lite press and release movements produce both sounds.
The calls are made of various materials including a Tin Whistle , Leather, wood, steel spring & iron nails.
Continue reading Bird Call In France Apeau & Apeaux Pedal Shape Bellow Whistles for Black Bird, Merle. A. Strauss