Extra button on wheellocks

[johnhb]

For my first post I would like to raise a question about the functioning of early wheellock mechanism.

Reference, the excellent paper, "What Can be Learned from the Landeszeughaus Wheellock Collection in Graz, Austria", Robert E. Brooker. < http://asoac.org/bulletins/95_brooker_graz.pdf>

Brooker shows a number of early locks, RG2, 3, 4, 5, and 285 where there is a button on the face of the lockplate, passing through the "V" of the mainspring and threaded into the sear. It appears as though pushing on the button will engage the sear with the hole in the wheel. It seems that winding would be a little clumsy since as the spanner was cranked the button would need to be pressed to lock the wheel in the wound position. In the top view of RG3 locks a leaf spring seems to be placed to apply a force to the sear but it is not clear from the illustrations as to which way the spring operates - to latch or unlatch the sear.

Why did the early (roughly pre 1560) have this arrangement?

Starting with RG9 the "new" design locks with safety catch no longer have the button.

Does anyone know the history of the design of these locks in more detail?

Best Regards,

Johnhb

[Fernando K]

Hola

Creo interpretar que te refieres al resorte que mueve al fiador secundario (second sear) que hace que el segundo fiador (sear second) trabe o bloquee al fiador primario (primary sear) cuando el extremo de este se ha introducido en el orificio en la rueda.
El sistema siguiente fué de un sistema que tenía un resorte doble o de doble acción, que movía automáticamente los dos fiadores (sear), que hacían que se bloqueara la rueda.
En cuanto a la antiguedad del sistema, otros miembros de este foro, con mas autordad ue la mía, te podran ayudar.

Afectuosamente desde Argentina, Fernando


Hello

I interpret that you mean the spring that moves the secondary sear (sear second) which makes the second sear (sear second) lock or block the primary guarantor (primary sear) when the end of this has been introduced into the hole in the wheel .
The following system was a system that had a twin or double spring action, which automatically moved two catches (SEAR), which made the wheel will lock.
Regarding the old system, other members of this forum, with more autordad ue mine, you can help.

Sincerely from Argentina, Fernando

[Matchlock]

Hi,

The principle of the press button, wich is normally only known from wheellocks of the 1550's in the Graz armory, is to tighten the pressure on the sear when the wheel is spanned. The actual sear spring was often too weak for a safe contact between the sear rest and the full strength of the wheel spring. With the button pressed and in activated position, the trigger had to be pulled with significantly higher force.

Best,
Michael

[fernando]

Welcome to the forum johnhb,
I expect you are satisfied with the answers to your question ... schematic drawings included

[Fernando K]

Hola.
Ante todo, aclarar que mi intención no es iniciar una polémica con las ideas vertidas en los post anteriores, sino establecer el funcionamiento de la llave de rueda (wheellock)....
Primero: La palanca de impulsar (button press) existe no solo en los ejemplares en la armeria de Graz, sino también en numerosos ejemplares de "tschinke". Justamente, en el thread reciente en este foro, se han adjuntado imágenes de "tschinke" que lo poseen.
Segundo: El ejemplar elegido por JOHNHB para su interrogatorio, RG3 del trabajo de Brooker citado, no muestra ningún resorte actuando sobre el primer fiador (primary sear)
Tercero: Para que el resorte del primer fiador (primary sear) como aparece en el diseño adjuntado por Matchlock agregue mas fuerza al contacto entre los dos fiadores (sear), el resorte tendría que actuar acercando al extremo del primer fiador (primary sear) a la cara interna de la platina(plate) y no alejándolo, como aparece representado

Afectuosamente. Fernando KHello.
First, to clarify that my intention is not to start a debate with the ideas expressed in previous posts, but to establish the operation of the lug wrench (wheellock )....
First, the drive lever (button press) exists not only in the specimens in the armory in Graz, but numerous copies of "tschinke." Precisely, in the recent thread on this forum, images have been attached "tschinke" who possess it.
Second, the example chosen by JOHNHB for questioning RG3 Brooker's work cited shows no spring acting on the first latch (primary sear)
Third: For the first detent spring (primary sear) as shown in the attached design by Matchlock add more force to the contact between the two guarantors (SEAR), the spring would have to move closer to the end of the first latch (primary sear) to the inside of the plate (plate) and away, as represented

Affectionately. Fernando K

[johnhb]

Thank you to Fernando K, Fernando and Matchlock for your replies.

Here is a later (about 1580?) wheellock which has the sear engagement button, missing its head. The button is pushed out by a spring so it disengages the sear from the wheel. This requires that the button be pushed with one hand as the wheel is wound with the other. Must have been inconvenient on horseback!

The numbers on the bottom edge seem odd - perhaps they date from when it was made?

Best Regards,

Johnhb