An Improved Foot-power Hammer.
Year: 1890

page_text: Date of Application, 12th Feb., 1890
Complete Specification Left, 12th Nov., 1890-Accepted, 13th Dec., 1890
PROVISIONAL SPECIFICATION.
An Improved Foot-power Hammer.
I, JOHN PARRY JONES, No. 2 House, No. 9 Court West Street, in Borough of
Sheffield in the County of York, Stone Mason do hereby declare the nature of this
invention to be as follows:-
The object of this invention is to provide a foot power hammer that will give
a perpenticular stroke and which is addapted for all kinds of forging stamping
and cutting, and consists of a hammer head of suitable shape and weight and
this hammer head moves up and down in suitable slides to the top of this
hammer head there is attached an arm or lever which extends backwards
and is attached at the other end to a circular wheel at a proper distance from the
centre according to the length of the strocke required this is so piviotted at its center
to a suitable support that when in use it has a half circular and also a slightly back-
ward and forward motion, the stua that connects the lever to the wheel extends
through the said wheel and fitts in a slott on each side of the wheel the forms of
slotts is exentric the exentric form of the slotts is the cause of the perpenticular fall
of the hammer and also the exentricity of these slotts gives the length of the stroke
that is in combination with the wheel, at a suitable distance from the back end of the
arm there is a slott in the arm which allows it to move backwards and forwards as
the hammer is assending or desending on a stud and the stud is fixed at a point were the
arm makes an intersection between the arm been up, and down, and therefore forming
a kind of fulcrum upon which the arm works.
The power that lifts the hammer is derived from an open coiled spring the said
spring is placed below the arm and at a suitable distance from both ends, and upon the
top end of the spring is a kind of piston rod and that extends from the top end of
the spring when it is at rest to underneath the arm and which is provided with a slott
and a small pulley wheel on which the arm rests and above the arm there is a stud
placed through the slott in the piston rod by which an additional power may be given
to the hammer by the foot lever this said piston rod works up and down in gaides.
Attached to the lower end of the piston rod there is a collar or flange or other suitable
device which rests upon the top end of the spring.
Attached to the under side of this collar is a chain or rope or other suitable device
which extends through the centre of the spring down to underneath a pulley wheel
that is below the centre of the spring, and continues over or under one or inore
pulley wheels as the case may require and at the end it is attached to a foot lever and
the back end of the lever is attached to the back of the machine.
When the spring is at rest the hammer is up and the foot lever is also up and as
the treadle is pressed down the spring then becomes compressed and therefore relieves
the whole pressure from the hammer or portion of the said pressure and the hammer
alls according in weight and quickness just as quickness and pressure is put on the
readle.
This machine may be constructed with one or several hammers side by side as the
case may require and each hammer be provided with differient setts of dyes and
tamps for all kind of forging and the bed plate or anvil to be provided with dyes
nd stamps to suite the dyes in hammer.
.
Dated this 11th day of February 1890.

page_text: COMPLETE SPECIFICATION.
An Improved Foot-power Hammer.
I JOHN PARHY JONES of 2 House 9 Court West Street Sheffield in the County of
York at present residing at 42 Beauchamp 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 :-:
The object of this invention is to provide a foot power hammer which will give a
perpendicular stroke, and which is adapted for all kinds of forging stamping and
cutting and can be worked, also by a hand lever when required.
The nature of my said invention and the manner in which the same is to be per-
formed or carried into practical eflect will be readily understood on reference to the
drawings hereunto annexed and the following explanation thereof.
Fig. 1. on the drawing is an elevation (drawn partly in section) of my improved
foot power hammer, and Figs. 2 and 3 are detached views of details hereinafter more
fully referred to.
My invention consists principally of a strong frame a in which a hammer head of
suitable weight and shape is mounted so as to move up and down vertically in suitable
slides above an anvil e fixed also in the same frame.
To the top of the hammer head is jointed one end of an arm or lever d which
extends backwards and has attached at its other end a wheel or bowl e at the
proper distance beyond the fulcrum of the lever according to the length of stroke
required.
The fulcrum of the lever which may be provided with friction bowls is fixed to a
suitable support or bracket y, the said lever being forked (see detached plan view
Fig. 2.) so that it embraces the bracket on both sides and holds both ends of the
pin of the bowl e.
The fork of the lever is slotted at d' so that it can slide as well as turn upon its
fulcrum and the bracket is made with a curved excentric slot g¹ in which the bowl e
at the end of the lever works.
'
The curved excentric form of this slot, is such that when the lever d is caused to
oscillate on its fulcrum f, the slots d¹ slide on the fulcrum and the other end of the
lever which is connected to the hammer head will rise and fall in a perpendicular line.
The length of the curved slot y' also limits the length of the stroke.
The power that lifts the hammer is derived from an open coiled pusher spring h
which works on a fixed tube i. The said spring is placed below the arm or lever d
and at a suitable distance from both ends, and at the upper end of the spring his
a cross piece (see also detached plan Fig. 3.) supporting a kind of piston rod 7, the
upper end of which passes through a hole in the top of the frame a.
This rod is slotted to allow the arm or lever to pass through it, and is provided with
a small pulley or wheel m on which the arm'd rests, and above the arm there
is a stud or pin which rests on the arm, or the top of the fork will answer the same
purpose.
The said piston rod 7 works up and down in guides or bushed holes in the frame a
and the cross piece or collar & rests upon the top of the spring h.
To the lower end of the piston rod (or to the collar A) is attached a chain, rope or
other suitable device n which extends downwards through the spring / round a pulley o
and its end is attached to the foot lever p either directly or through the auxiliary lever
and link The back end of the foot lever p is pivotted to the back of the frame.
When the machine is at rest the spring will hold the hammer b and the foot
lever p up in the position as shown at Fig. 1.
When the foot lever or treadle p is pressed down it compresses the spring / and
allows the hammer to fall by its own weight which may be increased just as speed
or pressure is put on the treadle.

page_text: It will be evident that this hammer may also be worked by a hand lever either at
front or at back in addition to or instead of the foot lever.
The machine may be constructed with one hammer only or with several hammers
side by side and each hammer may be provided with different sets of dies or swages
for all kinds of forging, the bed plate or anvil being also provided with corresponding
dies or swages.
The shell or frame a of the machine may be made of any suitable shape.
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 :-
First. The improved foot power hammer constructed and acting substantially as
hereinbefore described and illustrated by the drawings annexed, and
Secondly. I claim the combination of the excentric curved slot, the bowl at one end
of an arm or lever working therein, the said arm or lever sliding on its fulcrum and
having its other end jointed to the hammer head whereby the oscillation of the lever
will give a perpendicular motion to the hammer head.
Thirdly. I claim the coiled spring for raising and supporting the hammer head.
situated and operating substantially as hereinbefore described and illustrated by the
drawing annexed.
Dated this 11th day of November 1890
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.