Year: 1886

page_text: Date of Application, 25th Mar., 1886
Complete Left, 23rd Dec., 1886.
Complete Accepted, 18th Feb., 1887.
1 ANDREW HIGGINSON of Mersey Street Liverpool, in the County of Lancaster
Engineer, do hereby declare the nature of this invention to be as follows:-
The object is to so construct hammer apparatus to be actuated by liquid pressure on
my circulation system, that the action shall be rapid and easily controlled, and the
force of the blow be adjustable to the requirements of the work being done.
The invention consists First. In the combination of a cylinder containing a double
acting ram or its equivalent which carries the hammer with suitable framing and
anvil, the said cylinder being connected at each end by ways and valves to a
continuous fluid circulation pipe.
Second. In the combination with a double acting ram or its equivalent and cylinder
or cylinders, of two valves and ways or passages connecting the same to a continuous
fluid circulation system.
Third. In constructing a valve apparatus for operating hydraulic hammer apparatus
on the continuous circulation system with a box having four ways, and a valve having
three ways, and one through way.
Fourth. In combining with the operating valve of hydraulic hammer apparatus on
the continuous circulation system, of cylinder and piston or plunger connection for
controlling the pressure.

page_text: I ANDREW HIGGINSON of Mersey Street Liverpool in the County of Lancaster
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:-
The object is to so construct hammer apparatus to be actuated by liquid pressure on
my circulation system, that the action shall be rapid and easily controlled and the
force of the blow be adjustable to the requirements of the work being done.
The invention consists First. In the combination of a cylinder containing a double
acting ram or its equivalent which carries the hammer with suitable framing and
anvil. The said cylinder being connected at each end by ways and valves to a
continuous fluid circulation pipe.
Second. In the combination with, a double acting ram or its equivalent and cylinder
or cylinders of two valves and ways or passages connecting the same to a continuous
fluid circulation system.
Third. In constructing valve apparatus for operating hydraulic hammers on the
continuous circulation system with a box having four ways, and a valve having three
ways and one through way.
Fourth. In combining with the operating valve of hydraulic hammer apparatus on
the continuous circulation system cylinder and piston or plunger connections for
controlling the
pressure.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is an elevation of a hydraulic hammer constructed under my invention, and
figs. 2 and 3 sectional views of valve gear therefor.
prevents the
k valve for
a bedplate and anvil, columns carrying the cross head c and cylinder d, e ram
fitted at its lower end with the hammer head. These parts are of any convenient
construction. y ways leading from the top and bottom of the cylinder respectively
to the valve box pipes for the continuous circulation of fluid opening into
the valve hoxh. three way valve situate at the point of junction of the four
passages fgi. throughway in the valve j, the throughway
circulation of water from i to ¹ from being at any time arrested.
convenience situate in a passage connecting the ways and and opening from ¹ to f
1 cylinder carried by trunnions mm² fitting in a bearing on the valve box and around
a bearing on the pipe n. way leading from one end of the cylinder through the
trunnion m into the valve box ½ and way, way leading from the other end of the
cylinder through the trunnion m¹ and pipe n to the valve box and way 1 piston
connected by the rod to the lever s attached to the valve j.
The action of the apparatus is as follows:-In the position
shown water is flowing through the circulation pipe from to
in which the valve is
past the valve j and

page_text: the hammer e. is prevented from falling owing to the way g. being closed by a portion
of the valve j. If the lever is depressed the way is opened to h and the way y
to ¹, water flows into the top of the cylinder d and the hammer falls expelling the
water from the lower end of the cylinder through and, at the same time to
allow the hammer to descend rapidly to its work water flows through the valve k to
the top of the cylinder; when the hammer is in contact with the object being acted
on and the pressure in the top of the cylinder increases the valve k closes and the
levers has to be held down against the pressure in the piston 1, so that the pressure
of the blow is regulated by the force with which the handles is held down. When
the levers is raised water flows from into the lower end of the cylinder & raising the
hammer whilst at the same time the water in the upper end of the cylinder flows by
the way and into the circulation system.
When the hammer reaches the top of its stroke the pressure on the piston q through
the
way n depresses the levers and the water then flows direct from i to i. Instead
of having the valve in the position shown a separate connection and water supply
may be made to the way f
Fig. 4 is a sectional view in which two cylinders and
the lever s into central position instead of a piston y.
like those in figs. 1. 2 and 3.
The water is caused to circulate through the pipes
pump and fly wheel as is now well known.
plungers are used to move
The same letters denote parts
by means of a suitable force
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed I declare that what I claim is:-
First. The combination substantially as herein set forth of a hydraulic hammer with
continuous fluid circulation apparatus.
Second. The combination with a double acting ram or its equivalent and cylinder of
two valves and ways or passages for the continuous circulation of liquid.
Third. The hydraulic hammers, the combination of a valve box having four ways
with a valve having three ways and a through way for the purpose set forth.
Fourth. The combination with the valve or its equivalent of the cylinder and
piston appliances 1 or their equivalents for the purpose set forth.