Year: 1896

page_text: I, LESTER VIVIAN ROTHSCHILD of 37 Cleveland Square, Hyde Park, London,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in cams for stamp batteries and the like,
and its object is to so construct the cam which operates the stamp that it can
readily be secured upon or removed from the shaft in the event of breakage or
otherwise without necessitating the removal of the shaft, or of any other cam or
fixture upon the same.
The particular construction further permits of its being used as a right or left-hand
cam as desired; and also of the renewal of either half in the event of such being
broken or otherwise injured.
According to my invention I propose to make the cam, which may be of cast.
steel, iron or other suitable material,-in halves of precisely similar formation, each
half being provided with a semi-circular projection or boss slightly coned on its
exterior surface. Upon this conical projection or boss, a ring or collar of
corresponding shape is driven when the cam is in position, for the purpose of securing
the two halves of the cam together upon the shaft.
I further provide within the central opening or bore of each half of the cam, one
or more recesses so arranged that when the two halves are placed in position
they form one or more key-ways around the central opening, corresponding key
or keys being fitted into the shaft.
The ring or collar, when driven onto the boss or cam, is secured in position by
two or more pins, bolts or studs which project through the side of the cam and ring
or collar, their ends being rivetted or burred over to prevent any possibility of their
working loose when in action.
In a modification, I may arrange to provide a boss on both sides of the cam, in
which case two rings or collars will be necessary.
I, LESTER VIVIAN ROTHSCHILD, of 37 Cleveland Square, Hyde Park, London,
Engineer, do hereby declare the nature of this invention and in what manner the
Price 8d.1

page_text: same is to be performed, to be particularly described and ascertained in and by the
following statement :-
My invention relates to improvements in cams for stamp batteries and the
like, and its object is to so construct the cam which operates the stamp that it
can readily be secured upon or removed from the shaft, in the event of breakage
or otherwise, without necessitating the removal of the shaft, or of any other cam
or fixture upon the same.
The particular construction further permits of its heing used as a right or
left-hand cam as desired; and also of the renewal of either half in the event of such
being broken or otherwise injured.
My invention will be more clearly understood by reference to the accompanying
drawings, upon which
Figure 1 is a side elevation of one of my improved cams for operating a stamp
battery;
Figure 2 being an end elevation of the same;
Figure 3 is a view shewing the halves of the cam separately before being secured
in position.
Figure 4 shews the application of my improved cam to an "A" battery frame.
According to my invention I construct the can,-which may be of cast steel,
iron or other suitable material,-in halves AA of precisely similar formation, as
more particularly shewn on Figure 3, each half A being provided with a semi-
circular projection or boss B slightly coned on its exterior surface. Upon this
conical projection or boss B, a ring or collar C of corresponding shape is driven when
the cam is in position, for the purpose of securing the two halves A of the cam
together upon the shaft D.
Within the central opening or bore of each half of the cam, I provide one or
more recesses E so arranged that when the two halves A.A are placed in position
they form one or more key-ways around the central opening, corresponding keys
being fitted into the shaft as shewn on the drawing there is one key-way formed
in the bore.
The ring or collar C when driven on to the boss of the cam, is secured in position
by two or more pins, bolts or studs F which project through the side of the cam
and ring or collar C, their ends being rivetted or burred over to prevent any possibility
of their working loose when in action.
In a modification, I may arrange to provide a boss on both sides of the cam, in
which case two rings or collars C will be necessary.
In the foregoing construction the renewal of the cam in case of breakage can be
effected without removing any other cam or section than the one fractured: the cam
can be used either as a right-handed or left-handed cam: the arms of the cam are
interchangeable, and the cam can be tightened on the shaft when worn by driving
the ring further on the tapered boss, the driving out of keys in order to remove the
cam being also avoided, as by chipping off the burrs from the bolts F the ring C can
be driven away from the cam and either section drawn out and replaced. Moreover
each half being independent as regards fixture, the force of the cam striking the
tappet will not part the two halves as it will be resisted by the key or keys and
the ring.
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
I claim is :-
1. In the construction of cams for operating stamp batteries and the like, the
halves A A of similar formation provided with a central tapered boss or projection B,
recesses E in the bore of each section forming together one or more key-ways
provided with a key or keys in combination with a tapered ring C fitting over the
boss B for the purpose of holding the half-sections A A together, as described with
reference to the accompanying drawings.

page_text: 2. Cams for operating stamp batteries and the like, constructed, combined and
arranged substantially as described and as illustrated on the accompanying
drawings.
Dated cuis inteenth day of August 1937.
For the Applicant,
GEDGE & FEENY,
60 Queen Victoria Street, London, E.C., Chartered Patent Agents.