Improvements in Machines for Making Bolts, Screws, Rivets, Spikes, Nails, and the like from Hot or Cold Iron, Steel, Copper, or any Mixture of Metals.
Year: 1890

page_text: Date of Application, 20th Aug., 1890
Complete Specification Left, 19th May, 1891-Accepted, 20th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Machines for Making Bolts, Screws, Rivets, Spikes,
Nails, and the like from Hot or Cold Iron, Steel, Copper, or any
Mixture of Metals.
I SAMUEL MARSDEN of 8 Burlington Street Altrincham Cheshire late Manager
Bolt Works, do hereby declare the nature of this invention to be as follows:-
Improvements in machinery.
I claim to get all motions for forming the heads of bolts screws rivits spikes &
the like from one motion on shaft, the machine to strike any number of blows at the
option of the operator, the shaft to be fixed on suitable horizontal bed with one
cam on the said shaft. I bring in contact with the said cam a bowl wedge or
other shaped piece conected to a slide, the said slide to move forward and press
or form the head on bolts screws rivets spikes and the like at one or more numbers
of strokes, the said slide closeing and opening suitable dies to hold or grip the
iron or other metal whilst the slide or ram is forming the heads on bolts screws
rivits spikes or the like.
Dated this 19th day of August 1890.
SAMUEL MARSDEN,
8, Burlington Street, Altrincham, Cheshire.
COMPLETE SPECIFICATION.
Improvements in Machines for Making Bolts, Screws, Rivets, Spikes,
Nails, and the like from Hot or Cold Iron, Steel, Copper, or any
Mixture of Metals
I SAMUEL MARSDEN of 8 Burlington Street, Altrincham, Cheshire, 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:-
My said invention relates to improvements in the construction and arrangement
of machines used for forging bolts, screws, rivets, spikes and the like.
In machines commonly known as the Horsfall type of machines used for the
aforesaid purpose and to which my said invention more particularly relates all the
motions for operating the forging and shaping dies are derived from a main
driving or cam shaft. In such machines as heretofore constructed it is necessary
to stop the rotation of the main shaft at each stroke of the machine thus causing
repeated sudden shocks which entail frequent breakages and excessive wear
and tear.
.
The object of my said invention is to obviate the said defects by so constructing
and arranging the driving parts of the machine that the main shaft continues to
rotate in one direction while the machine is at work and by providing means for
obtaining the necessary reciprocating motions for the dies by the interposition or
withdrawal of certain elements in the combination of mechanism through which
the carriages or slides containing the dies are operated.
In order that my invention may be more clearly understood I will proceed to
describe the same with reference to the accompanying two sheets of drawings.
Fig. 1 is an elevation of a bolt forging machine constructed in accordance
with my said invention.
Fig. 2 is a plan thereof.

page_text: The general construction the arrangement and the functions of the several
principal working parts are those of a forging machine of the Horsfall type and
I do not generally claim such as my invention which is restricted to the devices for
governing the operation of the moving parts as specifically set forth in the claiming
clauses at the end hereof.
In the said figures a is the framework of the machine carrying the dies and
their actuating mechanism which derives motion from the main driving shaft b
provided with fast and loose driving pullies cc and a fly wheel das is well
understood. On the shaft is a came working against a roller f. The axle of the
roller is guided in slides f¹ in a carriage 9 and is provided with links f² a lever f
and a balance weight 4, these parts being so disposed and of such weights and
proportions that unless held down in the position shown in Fig. 1 the balance
weight will lift the roller ƒ so high that the cam e will not come into contact
therewith.
In order to bring the roller when required into the position shown in Fig. 1
a treadle bar f having treadle levers at right angles thereto and a treadle
board secured thereto are provided. At f is a link connecting the lever f³
with a projection on the treadle bar f. "When pressure is brought to bear
on the treadle f the weight of the balance gearing will be overcome and the
roller will be pulled down into the position shown in Fig. 1
understood.
as is well
When the roller is in the position shown in Fig. 1 the rotation of the
came acting during one part of its stroke will push the roller f forwards and
with it the carriage in which are the grooves f¹ wherein the ends of the
axle of the roller work. During another part of its stroke the came will
bear against a block g¹ (Fig. 2) in the hind part of the carriage g. A horizontal
reciprocating motion is thus communicated to the carriage g whenever the foot is
pressed on the treadle f7. The carriage contains the usual dies or forging
tools provided with breaking pieces h h and by means of the usual inclined planes
or levers a transverse motion is obtained from the longitudinal motion of the
carriage g
for operating the side dies or for opening and closing the gripping
device as is well understood by those conversant with the construction and use of
such machines as my said invention relates to.
By the insertion and withdrawal of a roller in the manner hereinbefore set forth
the stroke of the machine can be repeated as often as the attendant desires and by
simply lifting his foot from the treadle the operation of the machine will cease while
the main shaft continues to rotate.
Although I prefer to use a roller on account of the diminished friction which is
obtained by the use of rolling contact I do not limit myself to such. The function
of the roller is simply that of a distance piece and a block, wedge or other such
equivalent might be used to interpose between the revolving cam and the carriage
containing the forging tools. Instead of a treadle a lever, screw or other means
may be employed for operating the roller or other corresponding movable device
used for enabling the cam to operate the carriage g.
The came is provided with a detachable piece e so that when worn it may be
replaced.
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
1. In a machine for forging bolts and the like the combination of a cam, a
carriage and a movable distance piece operated by the attendant for starting or
stopping the action of the machine while the main shaft continues to rotate sub-
stantially as hereinbefore set forth.
2. In a machine for forging bolts and the like provided with a cam shaft for
operating the forging tools the use of a distance piece to be inserted by the

page_text: attendant between the cam and its place of action in order to actuate the forging
tools substantially as hereinbefore described and shown.
3. In a machine for forging bolts and the like the combination of a continually
rotating cam shaft, a displaceable roller and a carriage operated thereby sub-
stantially as and for the purpose hereinbefore described and shown.
4. In a machine for forging bolts and the like a roller working in grooves in a
carriage and provided with balance weight levers and a treadle substantially as and
for the purpose herein before described and shown.
Dated this Sixteenth day of May 1891.
EDWARD TURNER WHITELOW,
70, Deansgate, Manchester, Agent for the Applicant.