IMPROVEMENTS IN AND APPLICABLE TO HAND STAMPING MACHINES
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by Robert Barrett and Samuel
Wright at the Office of the Commissioners of Patents, with their
Petition, on the 13th December 1871.
We, ROBERT BARRETT and SAMUEL WRIGHT, both of Number 51,
Turnmill Street, Clerkenwell, in the County of Middlesex, Engineers,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN AND APPLICABLE TO HAND STAMPING MACHINES," to be as follows:-
These improvements have reference to providing hand stamping
machines with the following arrangements for single or progressive
numbering, and for securing the machine in position when it is desired
to keep the same steady in one position.
The said arrangements consist of a drum or spindle turned to the bore
of the numeral or figure wheels, the said drum or spindle being also
drilled for a pin and spring for each wheel. The bore of each wheel
contains as many V grooves as there are figures or numerals contained
in the outer edge of the wheel. The pin in the drum or spindle is
V shaped to fit the V groove in the wheel, and keeps the wheel in its
right position. The unit wheel when it has made one revolution moves

page_text: the tens wheel by means of a half circular spring, which has a pin
projecting through each side of of the wheel. The inner pin acting on
the tens wheel and the outer pin being pressed in by a tappet fixed
on the end of the drum or spindle, such tappet coming in contact with
the pin at every revolution of the unit wheel, the tens', the hundreds',
and the thousands' wheels, all these wheels being sprung and acted
upon by the said tappet at each revolution.
To work the unit and other wheels there is a ratchet wheel fixed to
the unit wheel, which is worked by a lever fastened to the frame
of machine, and alters the numbers or figures consecutively, or the
machine can be worked at the same figure or number any number
of times at pleasure, by raising or depressing a lever acting upon the
lever that works in the ratchet, this lever being kept out of gear by
means of a spring.
For inking we use an improved ink box, which consists of a reservoir
fixed to the box containing the wheels, the back of the box being
perforated and covered with cloth, india-rubber, or any soft material.
On the downward stroke of the machine a roller comes into play,
which is held in position by two arms with lugs secured to the frame,
a spring. fastened in the top of the frame acting on the lugs of each
arm to keep the roller up to its work. Also on the downwards stroke
the roller passes over the reservoir and gets inked, and on returning
the roller passes over the figures or numerals and inks them.
When it is required to stamp or print only the unit numbers, the
remaining wheels are stopped from printing or stamping by the user
placing such remaining wheels on the pin in the drum or spindle, in an
intermediate V in the wheel provided for that purpose.
In order to keep the machine in one steady position when required,
we provide a stand for the machine, which consists of a bed plate
having two uprights, between which the lower part or legs of the
machine can be held fast by means of screws or other removeable
fasteners. The machine can thus be used with or without the stand.