Year: 1887

page_text: Date of Application, 18th Nov., 1887
Complete Specification Left, 9th. Aug., 1888
Complete Specification Accepted, 14th Sept., 1888
WILLIAM FREDERICK BURLEIGH 106 Camberwell New road, London 1. Ingim
do hereby declare the nature of this invention to be as follows:-
My invention consists of improvements in the system of interlocking apparatus known
as tappet locking or Stevens and Sons systein (Letters Patent for which were granted
them bearing date the 14th day of March 1870 No. 746) and relates more especially to
the locking or releasing of levers conditional on the home or over position of other lever
or levers now called slip tappet locking owing to a side notion being imparted to the
tappet viz. the tappet either in its home or over position as the case may be is capable
of side motion the wide portion of the tappet partly filling up space between lock and
lock so that only when certain lever or levers are in the home or over position other
levers interlock with each other.
One part of my invention consists of a novel method of achieving the before
mentioned interlocking without side motion on the tappet either by means of a cross
bar actuating the connecting slides to which the locks are rivetted the said cross bar
being actuat by a lock moved by a tappet and arranged so that when this tappet is
either in its home or over position as required the cross bar is moved so as to cause
other tappets to interlock with each other on one or other of them being worked-In
some cases I substitute a cog and rack motion in place of the cross bar or use a lock
actuated by a tappet but not working at right angles with the tappet the said lock
either working in a suitable fixed guide or on a centre and arranged so that when the
tappet is either in the home or over position as required this lock moves a roller, ball,
or suitable shaped piece so as to increase or decrease the distance between lock & lock
thus causing other tappets to interlock with each other.
Another part of my invention consists of reducing friction where a slip tappet is
attached to the lever by the introduction of a novel form of ball head to the tappet or
the use of friction roller, and also a novel method of using slip locking in wide guiding
bars where a great number of channels are required, slip locking hitherto being
confined to several separate guiding bars placed under each other at one or both sides
of the lever apparatus where one lever has been required in connection with several
sets of slip locking.

page_text: My novel method of using slip tappets in wide guiding bars consists as follows the
wide guiding bar I form to take a second row of locks one above the other and I
employ a double tappet one immediately over the other one of these tappets runs
right through the wide guiding bar and has no side motion on it the other tappet is
in short lengths in reality forming a series of tappets one in front of the other each
one long enough to suit the draught given by the lever, each one of these short tappets
being capable of side motion if required, the top row of locks engage in notches in top
row of tappets and the bottom row of locks engage in notches in bottom row of tappets
all of which are encased in the wide guiding bar, the bottom connecting slides between
lock & lock working directly under the bottom tappet and the top connecting slides
between lock and lock working immediately above the top tappet-To enable free side
motion on the short tappet I use a stud pin one part of which preferably goes into a
hole in the lower tappet and the upper part of which slides freely in a corresponding
groove in the upper tappet thus enabling free side motion, in some cases I employ a
slotted hole & pin in place of this stud pin or I use a friction roller.
My novel form of ball headed tappet consists in forming one end of the tappet with
a bulb or ball shaped end which slides freely in a groove of a bracket attached to the
lever or to another tappet or consisting of part of the lever itself as the case may be
or if prefered I attach the ball shaped part to the lever and have the end of the tappet
grooved instoad, I provide suitable stops to prevent more than the necessary side
motion, sometimes instead of a ball shaped end I use a friction roller or rollers in a
suitable groove or guide.
Dated this 18th day of November 1887.

page_text: WILLIAM FREDERICK BURLEIGH 106 Camberwell New Road London S.E. Engineer
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
My invention consists of improvements in the system of interlocking apparatus
known as tappet locking or Stevens and Sons system (Letters Patent for which were
granted them bearing date the 14th day of March 1870 No. 746) and relates more
especially to the locking or releasing of levers conditional on the home or over position
of other lever or levers now called slip tappet locking owing to a side motion being
imparted to the tappet viz. the tappet either in its home or over position as the case
may be is capable of side motion the wide portion of the tappet partly filling up space
between lock and lock so that only when certain lever or levers are in the home or
over position other levers interlock with each other.
One part of my invention (some illustrations of which are shown on Figs. 1 to 11)
consists of a novel method of achieving the before mentioned interlocking without
side motion on the tappet either by means of a cross bar 70 Figs. 1. 2. 71. 72 Fig. 10
actuating the connecting slides to which the locks are rivetted or formed, the said
cross bar being actuated by a lock moved by a tappet or part of the cross bar itself
forming a lock 71. 72 Fig. 10 and arranged so that when this tappet is either in the
home or over position as required the cross bar is moved so as to cause other tappets
to interlock with each other on one or other of them being worked.
In some cases I substitute a rack and pinion motion 73 Figs. 1 & 4. in place of the
cross bar or use a lock 74 Fig. 6 actuated by a tappet but not working at right angles
with the tappet the said lock either working in a suitable fixed guide or on a
centre 75 Fig. 8 and arranged so that when the tappet is either in the home or over
position as required this lock moves a roller 114 Fig. 6. 115 Fig. 8, ball, or suitable
shaped piece so as to increase or decrease the distance between lock & lock thus
causing other tappets to interlock with each other. Another part of my invention
consists of reducing friction where a slip tappet is attached to the lever by the intro-
duction of a novel form of ball head to the tappet or the use of friction roller, and
also a novel method of using slip locking in wide guiding bars where a great number of
channels are required, slip locking hitherto being confined to several separate guiding
bars placed under each other at one or both sides of the lever apparatus where one lever
has been required in connection with several sets of slip locking. My novel method
of using slip tappets in wide guiding bars (some illustrations of which are shown
on Figs. 14 to 16) consists as follows the wide guiding bar or locking trough 66
Fig. 14 I form to take a second row of locks one above the other and I employ a
double tappet one immediately over the other one of these tappets 56 runs right

page_text: through or across the wide guiding bar 66 and has no side motion on it the other
tappet 59 is in short lengths in reality forming a series of tappets where required one
in front of the other each one long enough to suit the draught given by the lever each
one of these short tappets 59 being capable of side motion if required, the top row
of locks 111, 112, 113 engage in notches in top row of tappets 58, 59, 60 and the
bottom row of locks 110 engage in notches in bottom row of tappets all of which are
encased in the wide guiding bar 66 the bottom connecting slide 89 between lock and
lock working directly under the bottom tappet and the top connecting slide 90
between lock and lock working immediately above the top tappets. To enable free
side motion on the short tappet 59 I use a stud pin 118 Figs. 14 16, one part of
which preferably goes into a hole 119 in the lower tappet 56 and the upper part of
which slides freely in a corresponding groove 120 in the upper tappet thus enabling
free side motion, in some cases I employ a slotted hole & pin in place of this stud pin
or I use a friction roller.
My novel form of ball headed tappet consists in forming one end of the tappet with
a bulb or ball shaped end 116 Fig. 12. 13 which slides freely in a groove of a
bracket 117 attached to the lever or to another tappet or consisting of part of the lever
itself as the case may be or if preferred 1 attach the ball shaped part to the lever and
have the end of the tappet grooved instead, I provide suitable stops to prevent more
than the necessary side motion, sometimes instead of a ball shaped end I use a friction
roller or rollers in a suitable groove or guide.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a view showing levers of locking apparatus, wide guiding bar or locking
trough, tappets &c. with cover removed.
Figs. 2 & 4 are part plan of fig. 1.
Fig. 3 a section of fig. 2.
Fig. 5 a section of fig. 4.
Figs. 6. 8. 10 12 & 14 are plans of guiding bars or locking troughs with covers
removed showing tappets, locks and connecting slides.
Figs. 7. 9. 11. 13 & 15 are sections of same.
Fig. 16 is an enlarged view of tappets 56, 59 and stud pin 118 shown on fig. 14.
The numbers 1 to 16 refer to the before mentioned figures.
Numbers 17 to 26 are levers in locking apparatus.
Numbers 27 to 60 are tappets.
Numbers 61 to 66 are the guiding bars or locking troughs.
Number 67 slotted hole in wide guiding bar or locking trough.
Number 68 lug joint on tappet.
Number 69 connecting rod to lever.
Numbers 70, 71, 72 cross bars.
Number 73 Rack and pinion.
Numbers 74, 75 locks.
Numbers 76 to 90 connecting slides.
Numbers 91 to 113 locks.
Numbers 114, 115 rollers.
Number 116 ball end on tappet.
Number 117 Grooved bracket on lever.
Number 118 stud pin.
Number 119 hole for stud pin in lower tappet.
Number 120 groove for stud pin in upper tappet.
In order that the accompanying drawings may be more fully understood I will
describe part of the action as follows, although it will be obvious to those acquainted
with interlocking apparatus that I do not confine myself only to the particular com-
bination of interlocking between lever and lever shown as this must necessarily
vary to suit the different requirements at the various junctions and stations &c.
where used,

page_text: On referring to Figs. 1. 2 it will be seen that by pulling over lever 19 it causes
tappet 29 to move forward by reason of the connecting rod attached to lever and lug
joint on tappet working in slotted hole in locking trough the notched or narrow part
of the tappet moving past the lock 92 the wide part of the tappet holds the lock 92 in
the position shown on drawing this holds the cross bar 70 in its furthest position from
tappet 29 so that the moving forward of tappet 28 causes it to sway from that position,
but now lever 19 is over, before tappet 28 can be moved forward lever 21 must be
pulled over moving tappet 31 forward so that the bevelled notch or narrow part comes
opposite lock 93 now lever 18 is free to be pulled over and in so pulling causes.
tappet 28 to move forward the levelled notch moving past the lock 91 gives motion
to the connecting slide 76 which sways the cross bar 70 so that it actuates the con-
necting slide 77 causing lock 93 to enter the bevelled notch in tappet 31 and the
lock 94 to enter the bevelled notch in tappet 32 thus when lever 19 is in the pulled
over position lever 21 releases lever 18 and lever 18 locks lever 22 although if
lever 19 is in the homa position lever 18 is free to be pulled and in so pulling the
tappet 28 is moved forward the bevelled notch moving past the lock 91 actuates the
connecting slide 76 and sways the cross bar 70 to its position nearest to tappet 29.
without actuating the connecting slide 77 the cross bar 70 moving the lock 92 into the
bevelled notch on tappet 29.
On further reference to Fig. 1 and to Fig. 4 it will be seen that levers 17 and 21
are normally free of each other but if lever 20 is in the pulled over position then
lever 17 and 21 interlock with each other as pulling over 20 causes the tappet 30 to
move forward the lower bevelled notch or narrow part passing by lock 96 and the
upper bevelled notch or narrow part coming opposite the lock 97, now that lever 20
is in the pulled over position on pulling over lever 17 it causes the tappet 27 to move
forward the bevelled notch moving past the lock 95 giving motion the connecting
slide 78 and pinion 73 which actuates the connecting slide 80 to which the locks 97, 98
are attached the lock 97 entering the bevelled notch in tappet 30 holding it in the
over position and the lock 98 entering the bevelled notch on tappet 31 holding it in
the home position thus causing lever 17 to lock lever 21 when lever 20 is in the
over position.
Fig. 6 shows tappets 33 and 38 normally free of each other but to lock each other
when tappet 36 is in the over position as tappet 36 when pulled over holds the
lock 74 in the position shown this lock by means of the friction roller 114 keeps the
connecting slides 81. 82 apart as shown so that in pulling over tappet 38 it locks
tappet 33. The locking shown on Fig. 8 is very similar the difference being that
the lock 75 works on a centre instead of in a groove like lock 74.
Fig. 10 shows tappets 48 and 46 normally free of each other but tappet 48 to
release tappet 46 when tappet 45 is in the over position, it also shows tappets 47
and 50 normally free of each other but to lock each other when tappet 49 is in the
over position, in both these cases the action of the cross bars 71, 72 are similar to
the cross bar 70 shown in Figs. 1. 2 but the lock 92 is here dispensed with as part
of the cross bar itself forms the lock-The cross bar can if preferred be cranked or
can work on a centre.
Fig. 12 shows levers 23 and 26 normally free of each other but to lock each other
when both 24. 25 are in the pulled over position, the tappets 52. 53 when in the
pulled over position having side motion imparted as the wide portions of the tappets
fills up space and forms part of the connection between lock 107 and lock 109 so that
on pulling over tappet 51 it gives motion to lock 107 pushing tappet 52 lock 108
tappet 53 and lock 109 sideways so causing lever 23 to lock lever 26 when both
levers 24. 25 are in the over position. The tappets 52. 53 are shown fitted with ball
head 116 to reduce friction and enable free side motion.
Fig. 14 shows tappets 58 and 60 normally free of each other but to lock each other
when tappet 59 is in the pulled over position, the tappet 59 being capable of free side
motion by reason of the groove 120 sliding on the stud pin 118, the round end of the
stud pin in hole 119 in tappet 56 enables the tappet to work on a centre when in the
over position.
'

page_text: I am aware that interlocking apparatus containing lovers locking or releasing each
other &c. conditional on the position of other lever or levers with slip tappets, tappets,
locks, connecting slides, connecting rods, guiding bars or Jocking troughs, covers &c.
are old also that cross bars working in a different manner and for a different purpose
than described are old.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what
manner the same is to be performed, I declare that what 1
claim is:
1. The use of the cross bar (herein numbered 70. 71. 72) or any mere modification
thereof substantially as described and for the purpose specified.
2. The use of the rack and pinion (herein numbered 73) substantially as described
and for the purpose specified.
3. In combination with guiding bar or locking trough and tappets, the use of the
locks (herein numbered 74. 75) not working at right angles to tappets and the friction
rollers (herein numbered 114. 115) actuating connecting slides substantially as described
and illustrated.
4. The use of the tappet having ball end (herein numbered 116) or any mere
modification thereof substantially as described and for the purpose specified.
5. Attaching slip tappet to other tappet by means of stud pin, hole, and groove
(herein numbered 118, 119, 120) substantially as described and for the purpose
specified.
6. Apparatus substantially as described with reference to Figs. 1 to 11 inclusive of
the drawings annexed for the purpose specified.
Dated this 9th day of August 1888.
WILLIAM FREDERICK BURLEIGH.