Improved Power Hammers.
Year: 1894

page_text: Date of Application, 14th Feb., 1894
Complete Specification Left, 10th Nov., 1894-Accepted, 15th Dec, 1894
TOUHUIONAL
Improved Power Hammers.
I JOHN PARRY JONES of Rosie Bank Heaton Terrace, Henrietta Street
Ashton-under-Lyne in the County of Lancaster, Stone Mason, do hereby declare
the nature of this invention to be as follows:-
My invention relates to the improvements hereinafter described in power
hammers whereby the same is simplified and made more efficient.
My said improvements are particularly applicable to power hammers which are
worked by a crank.
The improvements have reference to the application of a principle which was
patented by me for an improved foot power hammer No. 2247 dated 12th February
1890 in order to render the same principle applicable to power hammers for
which it will act to a better purpose.
My invention consists principally of a strong-frame, on which a bracket is fixed.
In the said bracket there is an excentric slot in which works a bowl attached
to one end of a forked lever which embraces both sides of the said bracket.
In this bracket is fixed a stud which forms the fulcrum of the said lever,
which latter is slotted so as to allow the lever to slide on the said stud.
To the other end of the lever (which may also be forked) a hammer head is
attached so that it can work up and down vertically in suitable slides above an
anvil fixed also in the same frame. The said hammer head is chambered out
at a suitable distance from the bottom end, and is slotted on the inside at the
top so that it may be connected to the lever. The said hammer head has a
slotted stud firmly fixed inside the said chamber so that two open coiled pusher
springs may be placed on the said stud and a square or round block of metal
with a hole through it can be placed between the said springs, and through this
hole, and also through the end of the lever, a pin or stud is passed and connects
the hammer head firmly to the lever, the springs are placed in the hammer head
to allow various thicknesses of metal to be placed between the hammer head and
the anvil.
The same purpose can be attained by fixing two slotted studs one on either
side of the connection between the crank and the lever, and on each of the said
studs two open coiled springs are placed, and a pin or stud is put through the
connection, and also between each of the springs, the said studs to have screw
threads and a nut on the top end so that the springs can be compressed as
required.
At a suitable distance below the lever a crank shaft is fixed inside the frame,
the end of which projects outside the frame for the purpose of receiving a driving
pulley or pulleys. When two hammers are fixed on one machine there will be
two sets of cranks, and also one or two pulleys on each crank. The raising of
the hammers by the cranks is assisted by an open coiled spring, or springs fixed
on suitable supports and at a convenient distance below the lever, and acting
against a vertical rod or plunger fitted with a bowl placed beneath the hammer
lever.
Dated the 15th day of March 1894.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.

page_text: Improved Power Hammers.
I JOHN PARRY JONES of Rosie Bank, Heaton Terrace, Henrietta Street,
Ashton-under-Lyne, in the County of Lancaster, Stone Mason 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 relates to the improvements hereinafter described in power
hammers, whereby the same are simplified and made more efficient.
The said improvements are particularly applicable to power hammers which are
worked by a crank.
The improvements have reference to the application of a principle which was
patented by me for an improved foot-power hammer No. 2247 dated 12th February
1890, and their object is to render the same applicable to power hammers for which
it will act to a better purpose.
The nature of my said invention will be readily understood on reference to the
annexed sheet of drawings marked with figures and letters of reference corre-
sponding with those in the following explanation thereof.
Fig. 1 on the annexed drawings is a side elevation and Fig. 2 a front view (both
partly drawn in section) of my improved power hammer, and Fig. 3 is a horizontal
sectional plan view of the same.
My invention consists principally of a strong frame a on which a bracket bis
fixed. In the said bracket there is an excentric or curved slot c in which works a
bowl d attached to one end of a forked levere which embraces both sides of the
said bracket.
In this bracket bis fixed a stud which forms the fulcrum of the said lever e,
which latter is slotted at et so as to allow the said lever e to slide on the said
stud f.
To the other end of the lever e (which may also be forked see Fig. 3), a hammer
head
g is attached, so that it can work up and down vertically in suitable slides
above an anvil h fixed also in the same frame a. This hammer head is cored out
at a suitable distance from its bottom end, and is slotted on the inside at the top
(at 9+, Fig. 1) so that it may be connected to the said lever e.
The hammer head g has a vertical slotted stud i firmly fixed inside the chamber,
so that two open coiled pusher springs k may be placed on the said stud i, and a
square or round block of metal with a hole through it can be placed between the
said springs, and through this hole and also through the end of the lever e a short
pin or stud m is passed and connects the hammer head g firmly to the lever e. The
springs are placed in the hammer head g to allow various thicknesses of metal to
be placed between the hammer head g and the anvil h.
k
The same purpose can be attained by fixing two slotted studs, one on either side
of the crank pin m+ in the rod n which connects the crank to the lever e, and on
each side of the said studs two open coiled springs would be placed, and a pin or
stud put through the connection, and also between each of the springs, the said
studs having screw threads and a nut on the upper end, so that the springs may be
compressed as required.
I have not considered it necessary to file a drawing of this modification, as it is
merely the application of the coiled springs to the connecting rod n instead of to
the hammer head g.
At a suitable distance below the lever e a crankshaft o is fixed inside the frame,
the end of which projects outside of the frame for the purpose of receiving a
driving pulley or pulleys p.
When two hammers are fixed on one machine there will be two sets of cranks
and also one or two pulleys on each crank. The raising of the hammers by
the cranks is assisted by an open coiled spring 9 (or springs) fixed on suitable

page_text: supports at a convenient distance below the lever e, and acting against a pin r
sliding in the slot of the lever e and in the slots of the vertical rod or plunger t,
or the rod or plunger t may be fitted with a bowl working beneath the hammer
lever e.
u is a friction clutch to put the driving pulley p in or out of gear with the
crank shaft o by means of the treadle v and spring connecting rod w, the details
of which are shown on a larger scale at Fig. 4.
The object of the excentric or curved slot c in the bracket b is so to guide the
rear end of the lever e that its slotted portion will slide on the square block
through which the fulcrum pin passes in such a way that the front end of the
lever can move up and down in a vertical line with the hammer head notwith-
standing the radial motion of the lever e on its fulcrum f.
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 :-
The improved arrangement of power hammer constructed substantially as
hereinbefore described and illustrated by the accompanying drawings and
especially I claim the combination of the vertically sliding spring hammer-head,
with the lever rocking and sliding on its fulcrum, and provided with a bowl or
pin working in a curved guiding slot, in the manner and for the purposes set forth.
Dated this Eighth day of November 1894.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.