IMPROVEMENTS IN CENTRAL DRAW AND BUFFER GEAR
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
"
I, WILLIAM LLOYD WISE, of No 46 Lincoln's Inn Fields in the County of
Middlesex, Consulting Engineer and Patent Agent, do hereby declare the nature
of said invention for "IMPROVEMENTS IN CENTRAL DRAW AND BUFFER GEAR
(a communication to me from abroad by William Richard Sumption Jones, of
Ajmere, Rajputana, India, Civil Engineer) to be as follows:-
pub o !
A combined central draw and buffer gear according to this invention is provided
with a coupling hook which may engage with the coupling pin. of an adjacent
vehicle, and is also provided with a coupling pin which may be engaged by the
coupling hook of an adjacent vehicle, and both the hook and the pin are so arranged
with relation to the tightening appliance which may be a screw, or an eccentric or
other suitable device, that when the tightening appliance is put into operation &
tight connection of the two vehicles is effected, whether the connection is made by
the hook or by the pin. By this arrangement a draw and buffer gear with a
tightening appliance can make tight connection with a similar draw and buffer
without a tightening appliance, whether the latter be provided with a coupling
hook or a coupling pin (or the equivalent of either).
The connection between the pin which carries the coupling hook and the coupling
Or the
pin may be made in various ways; as for instance by links or plates.
coupling pin may be in the form of a cross-head, block or shackle and be connected
directly to the hook pin. The tightening device may act upon the coupling hook
pin, or the links or plates connecting that pin to the coupling pin, or upon the
coupling pin itself, and may be applied directly or through the intermediary of
levers, links and the like.
According to one arrangement a coupling head is pierced with two pairs of
slots; the forward pair receives a coupling pin, and the other pair the pin of a
coupling hook. These two pins are linked together by bars, and one of these
carries at each end a lever of the second order.
Each of these levers is coupled at one end to a lever of the first order pivotted on
another pin behind the coupling hook pin, and the other ends of both sets of
levers are connected by a right and left handed screw, By turning this screw

page_text: both the coupling hook and the coupling pin are moved either backwards or
forwards.
According to a second arrangement the link bars and levers of the second order
are replaced by diamond or other shaped plates having four holes in each connected
respectively to the coupling hook pin; the coupling pin, the connecting bar, and
the screw. According to a third arrangement the front slot holes and the coupling
pin are omitted, and in place of them there is provided a shackle which is attached
to the coupling hook pin. The front of the shackle is extended so as to occupy the
position usually occupied by a coupling pin. Levers of the second order are placed
on the ends of the coupling hook pin, as in the first arrangement, and the tightening
effected as before. According to a fourth arrangement the buffer head is pierced
with a slot extending from the front of the position usually occupied by the
coupling pin, to the rear of the coupling hook pin; the rear part of this slot is
somewhat enlarged for the purpose hereafter named. To the rear of this long slot
hole, and in the solid part of the buffer, there is provided a second slot hole, and
vertically through this a pin hole. For the first slot hole there is provided a
shackle shaped block, having at one end eyes to receive a coupling hook pin; and
at the sides two projections, one of which receives a coupling connecting rod, while
the other forms a nut and receives a coupling screw. For the second slot hole
there is provided a lever or yoke pivotting on the vertical pin; connection is
effected with one end of the yoke and the shackle shaped block by a bar or bars,
and with the other end of the yoke and the block by a right and left handed
screw.
If desired the side projections of the shackle block may be dispensed with, and
connection be made to the coupling hook pin as in the first arrangement, and by
enlarging the holes in the sides of the buffer head the shackle shaped block may be
allowed to rise and fall as in the third arrangement.
In lieu of using a screw to effect the tightening of the coupling an eccentric and
bandles may be employed. These may be fitted to a pin passing through the butt
end of the buffer head, and be connected by means of links to the engaging part of
the coupling, in such way that by turning the handle or handles through part of a
revolution tightening or disconnection may be effected.
1004

page_text: COMPLETE SPECIFICATION.
""
(a
I, WILLIAM LLOYD WISE, of No 46 Lincoln's Inn Fields, in the County of
Middlesex, Consulting Engineer and Patent Agent, do hereby declare the nature
of said invention for "IMPROVEMENTS IN CENTRAL DRAW AND BUFFER GEAR
communication to me from abroad by William Richard Sumption Jones, of
Ajmere, Rajputana, India, Civil Engineer,) and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
A combined central draw and buffer gear according to this invention is provided
with a coupling hook which may engage with the coupling pin of an adjacent.
vehicle, and is also provided with a coupling pin which may be engaged by the
coupling hook of an adjacent vehicle, and both the hook and the pin are so
arranged with relation to the tightening appliance, which may be a screw, or an
eccentric or other suitable device, that when the tightening appliance is put into
operation a tight connection of the two vehicles is effected, whether the connection
is made by the hook or by the pin. By this arrangement a draw and buffer gear
with a tightening appliance can make tight connection with a similar draw and
buffer without a tightening appliance, whether the latter be provided with a
coupling hook or a coupling pin (or the equivalent of either).
The connection between the pin which carries the coupling hook and the
coupling pin may be made in various ways; as for instance by links or plates. Or
the coupling pin may be in the form of a crosshead, block or shackle and be
connected directly to the hook pin. The tightening device may act upon the
coupling hook pin, or the links or plates connecting that pin to the coupling pin,
or upon the coupling pin itself, and may be applied directly or through the
intermediary of levers, links and the like.
According to one arrangement a coupling head is pierced with two pairs of slots;
the forward pair receives a coupling pin and the other pair the pin of a coupling
hook. These two pins are linked together by bars, and one of them carries at each
end a lever of the second order. Each of these levers is coupled at one end to a
lever of the first order pivotted on another pin behind the coupling hook pin, and
the other ends of both sets of levers are connected by a right and left handed
screw. By turning this screw both the coupling hook and the coupling pin are
moved either backwards or forwards.
According to a second arrangement the link bars and levers of the second order
are replaced by diamond or other shaped plates having four holes in each connected
respectively to the coupling hook pin, the coupling pin, the connecting bar and the
screw. According to a third arrangement the front slot holes and the coupling pin
are omitted, and in place of them there is provided a shackle which is attached to
the coupling hook pin. The front of the shackle is extended so as to occupy the
position usually occupied by a coupling pin. Levers of the second order are placed
on the ends of the coupling hook pin, as in the first arrangement, and the tightening
effected as before. According to a fourth arrangement the buffer bead pierced
with a slot extending from the front of the position usually occupied by the
*

page_text: coupling pin, to the rear of the coupling hook pin; the rear part of this slot is
somewhat enlarged for the purpose hereafter named. To the rear of this long slot
hole, and in the solid part of the buffer, there is provided a second slot hole, and
vertically through this a pin hole. For the first slot hole there is provided a
shackle shaped block, having at one end eyes to receive a coupling hook pin; and
at the sides two projections; one of which receives a coupling connecting rod, while
the other forms a nut and receives a coupling screw. For the second slot hole
there is provided a lever or yoke pivotting on the vertical pin; connection is
effected with one end of the yoke and the shackle shaped block by a bar or bars,
and with the other end of the yoke and the block by a right and left handed
screw. If desired the side projections of the shackle block may be dispensed with,
and connections be made to the coupling hook pin as in the first arrangement, and
by enlarging the holes in the sides of the buffer head the shackle shaped block may
be allowed to rise and fall as in the third arrangement.
In lieu of using a screw to effect the tightening of the coupling an eccentric and
handles may be employed. These may be fitted to a pin passing through the butt
end of the buffer head, and be connected by means of links to the engaging part
of the coupling, in such way that by turning the liandle or handles through part
of a revolution tightening or disconnection may be effected.
Referring to the accompanying sheets of drawings Fig 1 is a vertical elevation
of a buffer head fitted with a double ended coupling according to this invention
comprising a coupling hook and a coupling or draw pin, the two being connected
together. The connection between the coupling. pin, and the coupling hook pin, is
effected by side link bars. The coupling is engaged with the pin of an adjacent
buffer unprovided with tightening up appliance.
Fig 2 is a vertical elevation of the same, wherein the coupling or draw pin of
the double ended coupling is engaged with the hook of an adjacent buffer. The
adjacent buffer is unprovided with tightening up appliance.
Fig 3 is a plan, partly in section, of the above.
Figs 4, and 6, are vertical elevations and, plan, partly in section, of a double
ended coupling according to this invention, wherein diamond shaped plates form
the connection between the coupling or draw pin, and the coupling hook pin; these
plates also provide holes for connection at their upper and lower ends, with the
tightening up appliance.
Figs 7 and 8, are vertical elevation and section, and plan and sectional plan,
respectively, of a double ended coupling, wherein a shackle, attached to the
coupling hook pin, provides a connection for the engagement of the hook of an
adjacent buffer. In these figures and also in Figs 9 and 10 there are shewn two
double ended couplings face to face both provided with tightening-up appliances;
one being in section.
Fig 9 is a vertical clevation; partly in section, Fig. 10 is a plan partly in
section, and Fig 11 is a side elevation of a double ended coupling according to
'this invention, wherein the tightening part of the coupling is placed horizontally,
and is connected with a shackle shaped sliding block; to the rear portion of this
sliding block is attached the coupling hook, while the front part is made of 'a
Buitable shape to engage with the coupling hook of "an adjacent buffer.
Figs 12 and 13 are respectively vertical. elevation and plan, the latter partly in
section showing the application of an eccentric tightening up appliance of a double
ended coupling, according to this 'invention. The eccentric tightener, can be
readily fitted to any of the other four forms of the engaging part of the couplings
illustrated, or to any suitable modifications of the same.
A. (Fig.1 to 13,) is a buffer head having two flat sides, and a space between
them to receive a coupling hook, and a face with an opening in the top side of it, to
allow the hook to pass through; the rear end terminates in a shank, which forms
the combined buffer and draw bar. B (Figures 1 to 6) is the buffer head of an
adjacent vehicle, similar to A; but unprovided with an appliance for tightening up

page_text: either a coupling hook, or a coupling pin; C is a coupling pin or block. D (Figs 1
to 13) is a coupling hook pin. E. (Figs 1, 2 and 3) is a link bar, connection
between the coupling pin and the coupling hook pin; E¹ (Figs 7 to 11) is rigidly
connected to the coupling pin and joins it to the coupling hook pin. Fis, the
coupling hook. G and H (Figs 1, 2, 3, 4, 5 and 6) are slot holes to receive the
coupling pin, and the coupling hook pin respectively; these slot holes are long
enough to allow ample longitudinal movement of the pins (C and D) in the act of
tightening up, or release, when operated upon by the tightening up arrangement.
I (Figures 1 to 11) is a yoke lever pin, which receives the pull, and communicates
it to the draw-bar. J (Figures 1 to 11) is a yoke lever, through which the
coupling acts. K (Figs 1, 2, 3, 7 and 8) is a lever of the second order pivotted to
the coupling hook pin (D), L (Figures 1 to 11) is a rod or bar, connecting the
ends of the levers J and K. M (Figs 1 to 11) is a right and left handed screw,
connecting the other ends of the levers J and K by means of swivel nuts., N is a
sliding handle, which operates on the right and left handed screw M in tightening
up, or releasing, both the coupling hook, or the coupling pin.
With reference to Figs 4, 5 and 6, O is a diamond shaped plate combining the
offices of the link bar E and the lever K in Figs 1, 2 and 3.
With reference to Figs 7 and 8, the piece E¹. C. E¹, is a coupling shackle,
attached to the coupling hook pin D. This shackle combines the offices of the
coupling pin C and the link bar E in Figs 1, 2 and 3; also by its use the front slot
hole G (Figs 1, 2, 3, 4, 5 and 6) provided for the purpose of receiving the pin C is
dispensed with.
With reference to Figs 9, 10 and 11, the piece E¹. C. E. P. Q is a slide block
placed horizontally in the long slot hole R, enlarged at the rear end to receive the
eye of the coupling pin D. The yoke lever J is inserted longitudinally into another
slot hole S and there secured by the vertical yoke pin I. P is a projection formed
on the link block E. C. E, to receive the end of the coupling bar or rod L. Qis
another projection formed on the opposite side of the link block; and forms a nut
to receive the screw M. The lever J is at one of its ends connected by a rod, and
at the other, by the screw to the slide block E¹. C. EL. P. Q.; thus completing the
coupling.
In the above arrangements tightening up, or release, is effected by turning the
screw handle N. To effect an engagement with either the hook, or the pin of an
adjacent buffer, the handle N is used to slacken the screw M, when the pins C. and D
take a forward position, ready for engagement with either a pin, or a hook, of the
adjacent buffer. If, then, an adjacent vehicle is pushed the one whose buffer is
fitted with couplings according to this invention, and presents a hook for engage-
ment (as in Fig 4), a loose coupling will be effected; and if it presents a coupling
pin (as in Fig 5), a loose coupling with the hook of the double ended coupling will
be effected, then by tightening up the screw M, the buffer faces will be brought
into close contact, and a tight coupling will be effected.
With reference to Figs 12 and 13, the parts connecting the pins C and D, are
shown to be similar to those shewn in Figs 1 and 2; T is a combined shaft and
eccentric, pivotted in a hole in the butt end of the buffer head; U is a combined
eccentric and handle fastened to the other end of T.; V, V, are link bars connecting
the eccentrics T. and U to the coupling hook pin D. This eccentric appliance
might, in a similar manner, be connected to the engaging parts of the other
arrangements illustrated; in some cases to the coupling hook pin, and in others
to studs formed on the shackle-shaped blocks, to receive the excentric connecting
links.
The procedure for effecting a loose coupling with either the hook, or the coupling
pin, of an adjacent buffer, is the same as previously described; but instead of
loosening, or tightening up, by a screw, loosening is effected when the eccentric
handle assumes the position indicated by the dotted lines, and tightening, when the.
handle is revolved forward and downward; as shown by the full lines.
•

page_text: :
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is in combined central draw & buffer gear.
1. The use in combination of a coupling hook and a coupling pin arranged to bo
acted upon simultaneously by one tightening appliance substantially as described.
2. The use in combination with a coupling hook and a coupling pin of side links
or plates, arranged either inside or outside the buffer head, in such a manner that
they will cause the coupling hook and coupling pin to be simultaneously acted
upon by the tightening appliance substantially as described.
3. The use in combination with a coupling hook of a shackle acting as a coupling
pin, and secured to the coupling hook pin in such a manner that it and the
coupling hook will be simultaneously acted upon by the tightening appliance
substantially as described.
4. The use in combination with a coupling hook of a shackle shaped block
- provided with connections for attachment to the tightening appliance, and arranged
in such manner that it and the coupling hook will be simultaneously acted upon by
the tightening appliance, substantially as described.
Also
5. The combined central draw and buffer gear constructed, arranged and
operating substantially as described with reference to Figs 1, 2 and 3, to Figs 4, 5
and 6, to Figs 7 and 8, and to Figs 9, 10 and 11 and to Figs 12 and 13 of the
drawings.