IMPROVED MECHANICAL APPLIANCES FOR FACILITATING THE COUPLING AND UNCOUPLING OF THE DRAW BARS AND SAFETY CHAINS OF RAILWAY VEHICLES
Year: 1883

page_text: LETTERS PATENT to Gerard Wenzeslaus von Nawrocki Proprietor of the firm
of J Brandt & G W Nawrocki Patent Solicitor and Civil Engineer of
124 Leipzigerstrasse Berlin Germany for an Invention of IMPROVED
MECHANICAL APPLIANCES FOR FACILITATING THE COUPLING AND UNCOUPLING
OF THE DRAW BARS AND SAFETY CHAINS OF RAILWAY VEHICLES a com-
munication to him from Peter Madsen a person resident at Berlin in the.
empire of Germany
PROVISIONAL SPECIFICATION left by the said Gerard Wenzeslaus von
Nawrocki at the Office of the Commissioners of Patents on the 19th November
1883.
->
GERARD. WENZESLAUS VON NAWROCKI Proprietor of the firm of J Brandt
& G. W. v Nawrocki Patent Solicitor and Civil Engineer of 124 Leipzigerstrasse
Berlin Germany. IMPROVED MECHANICAL APPLIANCES FOR FACILITATING THE
COUPLING AND UNCOUPLING OF THE DRAW BARS AND SAFETY CHAINS OF RAILWAY
VEHICLES A communication from Peter Madsen a person resident at Berlin in the
empire of Germany.
This invention relates to improved mechanical appliances for facilitating the
coupling and uncoupling of the draw bars and safety chains of railway vehicles and
consists chiefly of a coupling chain a suitable system of levers to be governed from
the side of a vehicle and a screw mechanism serving for the tightening of the
coupling.
The invention is clearly illustrated in the annexed drawings
The coupling consists of links A, a, B. The link A as will be seen by the
Figures is connected by a short chain link a with the second or toggle link B which
turns on the axles of the nuts b guided in the draw bar C and controlled by a screw
rod c.
The screw rod c behind the socket piece q of the draw bar is provided with
a collar which settles against it so that the spindle c can only be employed by
traction
2"
At its back end the spindle c carries a worm wheel d in gear with the worm f
lodged upon the shaft e The shaft e passes across below the carriage and carries
on each extremity a crank handle g'and is connected in the centre with the draw
bar by a bracket so that as it rests on the carriage frame in slide bearings it must
follow the movements of the draw bar,

page_text: By turning the crank
the nut 6 with the toggle link B can be pushed to and
fro laterally of the draw bar. On the axle pins of the nut.b there is also placed
the hook D for the safety chain coupling which is moved to the front from the
link B by a carrier as may be seen by the positions Figures 1 and 2. The
engaging and unhooking of the link A is now effected by the divided lever h h¹
which is fixed on the bari passing across over the buffer which bar is carried by
supports on the buffer plank and may be turned and shifted and which is
rectangularly bent over at its extremities in order to form a lever for the operations
which are to be made with it. At the extreme end of the lever h¹ is placed a nut m
which slides on the small guide rod n placed at the side of the link A which guide
rod may be of round or square shape the nut m carrying with its tongue (nose) m²
Figure 5 against the other side of the respective link leg in order to keep the link A
always in a horizontal position at the hooking and unhooking (Figure 3.)
The rods h and h¹ are connected together around the pin o and may be turned so
that h¹ may turn around o towards the upper side while a stem opposes the turning
downward. As soon as h¹ has to bear the weight of the coupling chain A a B,
then h and h¹ form a straight lever as may be seen in Figure 1. The coupling of
two carriages is effected in the following manner. The workman seizes the rod i
shifts it laterally and executes with the lever i a turning of a little more than
90° whereby the nut m and tongue m¹ of the lever h h¹ slides on n along to the
front and brings the coupling chain B, a, A into the position shown by Figures 1
and 3.
at
Now the rod i is shifted back again laterally until h joins the middle support k
the lever is dropped by which the link A must fall into the drag hook E of the
other carriage. By this the coupling is effected for the travelling service.
In order to draw the coupling tightly up the workman seizes the crank g and by
means of the arbor e he turns the rear worm f worm wheel d and spindle c the
nute with the link B by which the coupling chain B, a and A, is effected.
The safety chain coupling is actuated in the following manner.
The coupling
link A of the opposite carriage likewise with the aid of its own lever mechanism
ii¹h h¹ is raised but only to such height, that it may be shifted between the draw
bar C and the safety coupling hook D after this the lever ¹ is loosened and the
loop A falls into the hook D. In this way the prescribed coupling of the wagons
for the road service is realized (Figures 2 and 4)
For loosening the coupling the movements of the appliances must be reversed
This invention permits also of the coupling of two wagons whose buffers are distant
one from the other or which may also be pushed together to the same distance.
The chief features of novelty in this invention are
1 The specified lateral railway carriage coupling consisting of. the coupling link A
which connected with the nut b.by the links a and B is, hooked and unhooked
by turning and lateral shifting of the rod i by means of the lever.h h¹ and the
nut m and tongue m' and which is effected by the back screwing of the nut 6 on
the spindle c.
.
2 The arrangement of the spindle c upon which slides as female screw the nut b
bearing the coupling links B, a, A below the draw.bar between two adjoining
pieces fixed on the latter whereby the coupling. is rendered effective without
being obliged to interfere with the draw bar hook.
3 The suspension of the coupling link A by means of the link a and the noose B
on the nut b of the draw bar by which is rendered possible the lateral movement
of the link A also the disposition of the guide rod n on the loop A serving for
the raising of the latter into a horizontal position by means of the loop nut
and tongue m¹ of the lever h h¹
m
4 The arrangement of the lever hh¹ on the rod i. The lever may consist of two
or more joints and carries at its extremities the nut m and tongue m¹

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Gerard Wenzeslaus Von Nawrocki in the Patent Office on
the 17th May 1884.
GERARD WENZESLAUS VON NAWROCKI of the firm J Brandt & G W v
Nawrocki, Patent Solicitor and Civil Engineer of 124 Leipzigerstrasse, Berlin,
Germany. "IMPROVED MECHANICAL APPLIANCES FOR FACILITATING THE COUPLING
AND UNCOUPLING OF THE DRAW BARS AND SAFETY CHAINS OF RAILWAY VEHICLES"
A communication to me from Peter Madsen a person resident at Berlin, in the
empire of Germany
This invention relates to improved mechanical appliances for facilitating the
coupling and uncoupling of the draw bars and safety chains of Railway vehicles
and consists chiefly of a coupling chain, a suitable system of levers to be governed
from the side of a vehicle and a screw mechanism serving for the tightening of the
coupling.
The invention is clearly illustrated in the annexed drawings
The coupling consists of links A a B. The link A as will be seen by the figures,
is connected by a short chain link a with the second or toggle link B which turns
on the axles of the nut b guided in the draw bar C and controlled by a screw rod c.
The screw rod c behind the socket piece q of the draw bar is provided with a
collar which settles against it so that the spindle c can only be employed
by traction.
At its back end the spindle c carries a worm wheel din gear with the worm f
lodged upon the shaft e. The shaft e passes across below the carriage and carries
on each extremity a crank handle g and is connected in the centre with the draw
bar by a bracket, so that as it rests on the carriage frame in slide bearings, it must
follow the movements of the draw bar.
By turning, the crank g, the nut 6 with the toggle link B can be pushed to and
fro, laterally. On the axle pins of the nut b there is also placed the hook D. for the
safety chain coupling which is moved to the front from the link B by a carrier, as
may be seen by the positions Figures 1 and 2 The engaging and unhooking of the
link A) is now effected by the divided lever h, h¹ which is fixed on the bar i passing
across over the buffer, which bar is carried by supports k k on the buffer plank and
may be turned and shifted, and which is rectangularly bent over at its extremities
in order to form a lever for the operations which are to be made with it. At the
extreme end of the lever h¹ is placed a nut m, which slides on the small guide rod n
placed at the side of the link A which guide rod may be of round or square shape
the nut m carrying with its tongue (nose) m¹ Figure 5 against the other side of the
respective link leg in order to keep the link A always in a horizontal position at the
booking and unhooking (Figure 3)
The rods h and are connected together around the pin o and may be turned so
that h¹ may turn around o towards the upper side while a stem opposes the turning
downward. As soon as h¹ bas to bear the weight of the coupling chain A a B
then h and h¹ form a straight lever, as may be seen in Figure 1.
The coupling of two carriages is effected in the following manner. The workman
seizes the rod i at shifts it laterally and executes with the lever i¹ a turning of a
little more than 90° whereby the nut m and tongue m¹ of the lever h h¹ slides on n
along to the front and brings the coupling chain B a A into the position shown by
Figures 1 and 3.
Now the rod i is shifted back again laterally until h joins the middle support
the lever is dropped, by which the link A must fall into the drag hook E of the
other carriage. By this the coupling is effected for the travelling service. In order

page_text: to draw the coupling tight up the workman seizes the crank g and by means of the
arbor e he turns the rear worm f worm wheel d and spindle c the nut e with the
link B by which the coupling chain B a and A is effected.
The safety chain coupling is actuated in the following manner The coupling
link A of the opposite carriage likewise with the aid of its own lever mechanism
ihh' is raised but only to such height that it may be shifted between the draw
bar C and the safety coupling hook D after this the lever is loosened and the
loop A falls into the hook D. In this way the prescribed coupling of the wagons
for the road service is realized (Figures 2 and 4)
For loosening the coupling the movements of the appliances must be reversed.
This invention permits of the coupling of two wagons whose buffers are distant
one from the other or which may also be pushed together to the same distance.
Having now described the nature of the said Invention and in what manner the
same is to be performed I declare that I claim
First The specified lateral Railway Carriage coupling consisting of the coupling
link A which connected with the nut b by the links a and B is hooked
and unhooked by turning and lateral shifting of the rod i by means of the
lever h h¹ and the nut m and tongue m² and which is effected by the back
screwing of the nut b on the spindle c as described.
Secondly The arrangement of the spindle c upon which slides, as female screw the
nut 6 bearing the coupling links B a A below the draw bar between two
adjoining pieces fixed on the latter whereby the coupling is rendered
effective without being obliged to interfere with the draw bar hook as set
forth.
Thirdly The suspension of the coupling link A by means of the link a and the
noose B on the nut. 6 of the draw bar by which is rendered possible the
lateral movement of the link A; also the disposition of the guide rod n
on the link A serving to raise the latter into a horizontal position by
means of the nut m and tongue m¹ of the lever h, h¹. as described.
Fourthly The arrangement of the lever h¹ on the rod i. The lever may consist
of two or more joints and carries at its extremities the nut m and
tongue m¹ as explained.
In witness whereof I the said Gerard Wenzeslaus von Nawrocki have hereunto
set my hand and seal this fourth day of May in the year of our Lord One thousand
eight hundred and eighty four