Tyer and Company Signal
Welcome to the home of information on the Signalling Company
Tyer. They manufacture a wide variety of signalling products, but are probably
best known for their Tablet Machines and Token Machine.
The Token Machine was devised by the Great Western Railway
at its Reading Works. However the law was such that the GWR could not supply
machines to other railway companies. The design was therfore licenced to Tyer and
Company, who produced the No.8 machine. This was identical to the GWR machine
however it feature a 3 position indicator in lieu of the rotary switch that is
located to the left of the machine. The GWR however needed a large number of
machines in a hurry, to help in its programme of replacing tablet and staff
machines. To this end Tyer produced the No.9 machine which is ientical to the
GWR machine. All parts for the No.9 and most of the parts of the No.8 of the early
machines were interchangeable. A number of variations on these machines were
produced by Tyer for various customers. The late number 8 an 9 machines had a
revised commutator that was possibly easier to manufacture. The GWR did not
adopt the Tyer arrangement.
A No.10 machine was produced for export this had both token
in an out ports and a zigzag token magazine. This design enforced token use
rotation. The No.8 machine was further developed into the No.11 machine this
had a further revised commutator arrangement, but retained the GWR style lock
mechanism. The No.11 was further marked by the shift from iron as a material to
aluminium for the front and base, with a the cast back being omitted, and
replace by a steel case. A mark 2 No.11 was produced, which again revised the
commutator and lock introducing a number of features to be found in the next generation
of machines, and had a revised case. It would appear that the castings for the
No.11 used the casting patterns for the No.8 suitably modified, as there are
still present unused features of the No.8. A GWR version was produced by
bolting a switch unit into the three position indicator position.
The design was further refined to produce the No.12 see
below. This again was an aluminium fronted machine with a commutator
arrangement based on the Mk.2 No.11 one albeit again simplified to aid manufacture.
The use of die casting was adopted. The number 12 was available in a large
number of variations for various customers. The number 12A/6 was the GWR
version with the left hand switch assembly. Most machines could be fitted with
hand generators and permissive working attachments. Certain number 8s and all number
11s and 12s can be fitted with token transfer magazines.
The machines were normally painted Signal Red however long
section machines were painted Green and had a key coding that differed from the
normal A-D system and a different, smaller diameter centre pin. This meant
that it was neither possible to enter a long section token into a standard
machine, or vice versa..
Tyers Token Machines their derivatives and all other Tyer
and Company products are Copyright Mors Smitt UK Ltd.
GWR/BR(W) Token Machines are Copyright Timesegment
For New Token Transfer Magazine contact Mors Smitt UK Ltd.
and all other spare parts contact
© Timesegment Ltd 2020