A NEW SCREW BRAKE TO BE ADAPTED TO RAILWAY PURPOSES IN ORDER TO STOP TRAINS IN A SHORT TRANSIT
Year: 1876

page_text: LETTERS PATENT to Michele Trentanove, of 10, Duke Street, Portland Place
(Middlesex), for the Invention of "A NEW SCREW BRAKE TO BE ADAPTED TO
RAILWAY PURPOSES IN ORDER TO STOP TRAINS IN A SHORT TRANSIT
Sealed the 25th July 1876, and dated the 31st January 1876,
PROVISIONAL SPECIFICATION left by the said Michele Trentanove at the
Office of the Commissioners of Patents on the 31st January 1876.
MICHELE TRENTANOVE, of 10, Duke Street, Portland Place (Middlesex).
NEW SCREW BRAKE TO BE ADAPTED TO RAILWAY PURPOSES IN ORDER TO STOP
TRAINS IN A SHORT TRANSIT."
"A
The screw brake apparatus is constructed as follows:-Upon opposites sides of and
parallel with each of the axles of the running wheels of a railway train two shafts
are mounted, screw threads are cut on both ends of these shafts, the screw threads
screw into nuts carried by circular plates which surround the axle and can slide
to-and-fro upon it. The outer face of each circular plate carries a circular wooden
block. By simultaneously giving a partial rotation to the two shafts the two
circular blocks can be moved away from one another and forced against discs fixed
to the inner surface or forming part of the two running wheels at the ends of the
axle, they then act as friction brakes to impede the revolving of the wheels.
In order that the several pairs of transverse screw shafts throughout the train
may all be turned simultaneously, so as simultaniously to apply brakes to the
several pairs of wheels there is upon each carriage a central longitudinal shaft
running from end to end of it, one end of this shaft is made square to fit into a
corresponding socket on the end of the shaft of the next carriage. On part of the
longitudinal shaft of each carriage a screw thread is cut; upon this is screwed a nut
from which pass coupling rods to arms on the transverse screw shafts which operate
the disc brakes of such carriage. By this means, when the longitndinal shaft which
passes continuously along the train is caused to turn by a wheel under the control
of the driver or guard a partial turn will be given to all the transverse screw
shafts, and the several disc brakes throughout the train will thereby be brought
into action and the motion of the train will be quickly arrested.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Michele Trentanove in the Great Seal Patent Office on the 29th July
1876.
MICHELE TRENTANOVE, of 10, Duke Street, Portland Place, Middlesex. "A
NEW SCREW BRAKE TO BE ADAPTED TO RAILWAY PURPOSES IN ORDER TO STOP
TRAINS IN A SHORT TRANSIT."
The screw brake apparatus is constructed as follows:-Upon opposite sides of
and parallel with each of the axles of the running wheels of a railway train two
shafts are mounted, screw threads are cut on both ends of these shafts, the scrow
thread screw into nuts carried by circular plates which surround the axle and
can slide to-and-fro upon it. The outer face of each circular plate carries a circular
wooden block. By simultaneously giving a partial rotation to the two shafts the
two circular blocks can be moved away from one another and forced against discs
fixed to the inner surface, or forming part of the two running wheels at the ends
of the axle; they then act as friction brakes to impede the revolving of the wheels.
In order that the several pairs of transverse screw shafts throughout the train
may all be turned simultaneously so as simultaneously to apply brakes to the
several pairs of wheels, there is upon each carriage a central longitudinal shaft
running from end to end of it; one end of this shaft is made square to fit into a
corresponding socket on the end of the shaft of the next carriage. On part of the
longitudinal shaft of each carriage a screw thread is cut, upon this is screwed a
nut, from which pass coupling rods to arms on the transverse screw shafts which
operate the disc brakes of such carriage. By this means when the longitudinal
shaft, which passes continuously along the train, is caused turn by a wheel under
the control of the driver or guard, a partial turn will be given to all the transverse
screws shafts and the several disc brakes throughout the train will thereby be
brought into action and the motion of the train will be quickly arrested. Steam,
air, or other power, may, if desired, be applied to turn this shaft.
In order that my Invention may be fully understood, I have shown in the
Drawing hereunto annexed various views of part of a railway carriage having
screw brake apparatus constructed as above described applied to it.
Figure 1 shews a plan view of the bottom frame of the carriage and of the
brake apparatus; Figures 2 and 3 are end views.
Figure 4 shows a partial section, and Figure 5 shows a back view of one of the
disc brake blocks.
In these Figures A are the axles of the running wheels; B, B, are shafts carried
in suitable bearings and parallel with the axles; B¹ are screw threads cut on the
ends of these shafts; C, C, are nuts into which the screw threads B' enter; these
nuts are fixed to discs D which have fixed to them rings of wood that form the
brake blocks. On each shaft B is an arm E, these arms are jointed to rods F which
at one of their ends are fixed to a nut G; H is a shaft passing from end to end of
the carriage, and at each end projecting beyond it on the shaft is a screw thread H¹
screwing through the nut G. By this means when the shaft H is turned a partial
turn is given to each of the shafts B, and the brake blocks D are forced against the
inner sides of the wheels as herein-before described. All or several of the carriages
in a train are provided with similar brake apparatus, and longitudinal shaft H and
the shaft of one carriage is connected to the shafts of the carriages in front of and
behind it by a coupling so formed that the whole of the coupled shaft shall revolve
together whilst at the same time there is a certain amount of freedom for endway
play between the carriages. When the brakes are to be applied the shaft H is
turned from the guard's van by means of a hand wheel I on a vertical shaft K,
and this shaft by bevil toothed wheel gear transmits motion to the shaft H, as
shewn at Figure 3, and so applies the brakes on the several carriages.
Having thus described the nature of my Invention and the manner of performing

page_text: the same, I would have it understood, that I claim the combined arrangement of
screw brake apparatus, substantially as herein-before described.
In witness whereof, I, the said Michele Trentanove, have hereunto set my
hand and seal, this Twenty-ninth day of July, in the year of our Lord One
thousand eight hundred and seventy-six.
MICHELE TRENTANOVE. (L.S.)