Improvements in Apparatus for Holding Screw Heads, Nuts, and other similar Articles whilst being Shaped or Formed.
Year: 1887

page_text: Date of Application, 9th Feb., 1887
Complete Left, 9th Nov., 1887
Complete Accepted, 9th Dec., 1887
Improvements in Apparatus for Holding Screw Heads, Nuts, and
other similar Articles whilst being Shaped or Formed.
I KIRBY BANKS of 119 Beeston Hill Leeds in the county of York, Bolt and Screw
Manufacturer do hereby declare the nature of this invention to be as follows:-
In my arrangement I dispense with the ordinary fixed holder now used, such fixed
holder necessitating the machine having to be stopped when each screw head or nut
operated upon is placed in or taken out, this is a very great-waste of time.
Now according to my invention I employ a swivel holder which can be turned
round instantaneously as soon as the screw head or nut operated upon is completed, and
thereby bring another screw head or nut against the cutting tool without stopping the
machine.
'
Whilst one nut or screw head is being operated upon, another is placed in the swivel
holder on the opposite side thereof so that when one is completed by turning the holder
round the second nut or screw head is brought against the cutting tool instantaneously,
thereby saving a great amount of time.

page_text: Improvements in Apparatus for Holding Screw Heads, Nuts, and
other similar Articles whilst being Shaped or Formed.
I, KIRBY BANKS of 119 Beeston Hill, Leeds in the County of York, Bolt and Screw
Manufacturer, 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:-
In my arrangement I dispense with the ordinary fixed holder now used,
such fixed holder necessitating the machine having to be stopped when each screw
head or set of nuts operated upon is placed in or taken out, this being a very great
waste of time.
In the accompanying drawings Fig. 1 is a front elevation, Fig. 2 a side elevation,
and Fig. 3 a plan looking at the top shewing my improvements.
A is the bed of a shaping or other machine, to which the table B is fitted so as to
slide freely, and can be retained in any desired position or adjusted on such bed by
screws, bolts or other convenient means.
On the table 13 is provided a plate C, this plate may be adjusted and held in any
suitable position on the table B by means of the bolts D. In the plate C is provided
a circular opening which receives the lower part E of the swivel headstocks and G,
these headstocks F and G are fitted with conical spindles H and J, split at their outer
ends, and provided with holes therein to receive the mandrils K and L. The spindles H
and J after receiving the mandrils K and L are drawn inwards towards the centre M
by means of their respective nuts N and O, whereby the split conical ends of cach
tighten onto their mandrils and hold them firmly in position. The nuts or other
forms having been placed in position on the mandrils, such work can be brought under
the operation of the machine, so that whilst one piece or set of pieces is or are being
operated upon, the attendant can fix other piece or pieces upon the opposite mandril,
so that when the work in one headstock or holder is completed, the beadstocks can be
turned round on the plate C, and the other headstock or holder with its work brought
up to the cutting tool, thereby saving a great amount of time and without stopping
the machine. The headstocks are retained in position when the cutting or shaping
operation is proceeding by means of a bolt P, in the hollow head of which is provided
an eccentric Q, mounted on a shaft R and operated through lever S. The spindles H
and J can be turned round to any position and held by means of the catches T and U
which are passed into notches V in the catch plates W.
In order to correctly turn the headstocks into their required position, I provide
holes or notches Y through the plate C and into the lower part E of the headstocks F
and G, so that the operator when he finds the pin Y shoots inwards into the hole or
notch Y he knows the position is correct. The spring hand lever X is employed for

page_text: withdrawing the pin Y¹ and for forcing such pin into the holes or notches when the
headstocks are in proper position. When the apparatus is employed for holding and
operating screw heads and the like pieces, the mandrils may be dispensed with, and
the screw or piece itself inserted instead.
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 arrangement, construction and combination of the various parts forming the
apparatus for holding screw heads, nuts and other similar articles whilst being shaped
or formed, substantially as herein set forth.