Improvements in or relating to Hammers Worked by Gas, Steam, Air, or other Elastic Fluid under Pressure, or by Mechanical or other Power.
Year: 1888

page_text: Date of Application, 5th Mar., 1888
Complete Specification Left, 5th Jan., 1889
Complete Specification Accepted, 5th Feb., 1889
Improvements in or relating to Hammers Worked by Gas, Steam,
Air, or other Elastic Fluid under Pressure, or by Mechanical or
other Power.
I, THOMAS MUDD of Hartlepool in the County of Durham, Engineer, do hereby
declare the nature of this invention to be as follows:
The invention relates to power driven hammers, which can be worked either by gas,
steam, air, mechanical or other known power, but especially to the type of gas
hammer now being manufactured by Messrs. Tangye Limited, of Birmingham.
These hammers are adapted firstly to the purpose of caulking the seams of boilers
or other vessels, and secondly to the purpose of cutting off the heads and driving
out the old rivets in old boilers or other vessels that are being broken up.
For boilers or other vessels which are cylindrical I propose slowly rotating the
boiler on wheels or rollers, either by separate power or by a foed motion actuated by
the hammer itself. The hammer is preferably placed underneath the boiler, its cylinder
would have a joint at the back or elsewhere enabling it to be angled to any required
inclination to direct its blow properly to the work. It could either be fitted with a
caulking tool and so deliver the blows direct, or the man in charge could hold a rod
tool to the work in the usual way and the hammer would simply deliver blows on the
tool or a tool may be arranged to be held mechanically in an attachment to the
hammer frame so as to relieve the man from this duty.
:
The hammer would be quite portable and applicable to a great number of varying
circumstances.
For straight seams I propose that the boiler or other object remain stationary, and
feed the hammer along a slide frame or gantree. Further details will be given in the
complete specification.
The application of the apparatus for cutting off the heads and driving out the old
rivets for the purpose of knocking old boilers to pieces, is very similar and will be fully
described in the complete specification.
Dated this 3rd day of March 1888.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Patent Agents for the Applicant.

page_text: CURIT ELE DE MULTICATION.
Improvements in or relating to Hammers Worked by Gas, Steam,
Air, or other Elastic Fluid under Pressure, or by Mechanical or
other Power.
I, THOMAS MUDD, of Hartlepool in the County of Durham, 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 invention relates to power driven hammers, which can be worked either by gas,
steam, air, mechanical or other known power, but especially to the type of gas bammer
now being manufactured by Messrs. Tangye, Limited, of Birmingham. These
hammers inay bo adapted, firstly, to the purpose of caulking the seams of boilers or
other vessels or structures, and secondly, to the purpose of cutting off the rivet heads
in, and driving out the old rivets from old boilers or other vessels or structures that
are being broken up.
The manner in which the invention may be carried into effect may be understood
from the accompanying drawings, which show how the hammer may be applied to the
caulking of a circumferential seam of a cylindrical boiler.
Figure 1 being a sido elevation, and.
Figure 2 an end elevation.
A is the boiler which is preferably mounted upon wheels or rollers B secured to
suitable frames or beams B¹. The boiler may be slowly rotated during the
caulking operation either by a separate power or by a feed motion actuated by
the hammer itself.
Cis the hammer which is preferably located below the boiler as shown. Its
cylinder D is provided, at a suitable point, preferably at its rear end, with a pivot or
trunnion d by means of which it may be adjusted to any required inclination, in order
that the blow of the hammer may be directed properly to the work. The cylinder D
may be secured in position when adjusted in any suitable manner, such as by one or
more bolts or clamps d' which pass through lugs d² on the cylinder and into or through
a curved groove or slot d³ in the hammer frame E. The hammer could either be
fitted with a caulking tool and so deliver the blows direct, or the man in charge
could hold a rod tool F to the work in the usual way, in which case the hammer
would simply deliver blows on the head of the tool. Or a tool may be arranged to
be held mechanically in a suitable attachment or holder on the hammer frame E so as
to relieve the man from this duty.
The hammer is preferably made portable, and, if desired, it may be mounted upon
compound slides E' E2 so as to be readily adjusted to the work. The gas, steam, or
other motive fluid (where such is employed) may be introduced at the trunnion d or by.
means of a flexible pipe connected to the cylinder.
In caulking straight seams the boiler or other structure may remain stationary, and
the hammer may be fed along a frame or gantree.

page_text: In knocking old boilers or other vessels or structures to pieces, the heads of the
rivets are first cut off and the rivet then punched out. These operations may be
readily performed by a power hammer of the above description, the position of the
hammer being alterod to suit, and a set, chisel or punch being substituted for the
caulking tool.
It will be obvious that a portable power hammer of this kind, whether employed
for caulking, cutting or punching, could be utilized in a variety of circumstances, and
for many classes of structures where rivets or caulked joints are used. The precise
manner of mounting the hammer, its inclination, and its position with respect to the
work would depend greatly upon circumstances.
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:
1. The application to the caulking of the joints of metallic structures, and to the
cutting off of the rivet heads in, and the punching out of the rivets from such
structures, of an adjustable power hammer suitably mounted in proximity to the
structure and adapted to deliver its blows either directly upon the part under
operation or indirectly upon the head of a tool held against such part, substantially
as described.
2. A power hammer, mounted upon a suitable frame, preferably portable and
adjustable, and having its cylinder capable of adjustment upon said frame in such a
manner that the hammer is enabled to deliver its blow at any required inclination,
substantially as described.
3. A portable and adjustable power hammer, constructed and arranged substantially
as shown and described.