Improvements in Machines for Milling Nuts, Screws, or Keys.
Year: 1892

page_text: Date of Application, 7th Dec., 1892
- Complete Specification Left, 7th Sept., 1893-Accepted, 28th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Machines for Milling Nuts, Screws, or Keys.
JAMES EDWARD CARTER and SAM AYRTON WRIGHT of the Firm of Carter
and Wright Engineers and Tool Makers Hexagon Iron Works Gibbet Hill
Halifax in the County of York do hereby declare the nature of this invention to
be as follows:-
Our invention for purpose aforesaid consists of a frame carrying two vertical
spindles having at their lower end milling cutters these spindles are carried in
adjustable bearings so that varying sizes of nuts, screw heads or keys can be milled.
The nuts screw heads or keys pass between the cutters thereby milling both sides
at once, for the purpose of using small diameter cutters and to enable the cutters to
be brought close together we drive the cutting spindles by spiral wheels at the
upper end of the spindles by means of horizontal shaft having thereon two wide
spiral wheels one right and the other left hand, the wheels are of such width as to
allow the cutters to be brought nearer to or further apart according to the objects
to be milled. By preference we mill small size nuts up to inch from round iron
or steel which is held between centres, one end having a square centre which forms
a carrier, when turning the iron or steel round after milling two sides so that the
cutters can operate on the other sides the square centre end is provided with
dividing plate so that the mandrel carrying the nuts or the bars of iron or steel can
be moved round correctly. The slide carrying the mandrel with nuts or bar to be
milled is moved by screw, worm and wheel which receives its motion from cone
pulleys and belt on the horizontal shaft.
For small size of nuts or for keys we prefer to make the machine with multiple
centres one above the other so that one or more mandrels of nuts, bars or key
lengths can be milled at the same time with one dividing plate which by cut
wheels communicates motion to the other centres for carrying the mandrel, bar or
key length.
J. E. CARTER.
S. A. WRIGHT.
COMPLETE SPECIFICATION.
Improvements in Machines for Milling Nuts, Screws, or Keys.
JAMES EDWARD CARTER and SAM AYRTON WRIGHT of the Firm of Carter
and Wright, Engineers and Tool Makers, Hexagon Iron Works, Gibbet Hill,
Halifax in the County of York, 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 :-
Our invention relates to machines for milling the sides of nuts or set screw heads
and the, sides of keys or feathers. In order that our invention may be fully
understood we have hereunto annexed two sheets of drawings, shewing two views
of machine suitable for milling nuts either from the bar or a number of nuts placed
on a mandrel, the same machine is suitable for milling the sides of keys in lengths
or set screw heads. When milling keys a dividing plate with 4 divisions is used
and when milling beads of set screws a socket is put on the dividing head spindle
to receive the shank of set screw.
Fig. 1 is a front elevation of machine partly in section, through line A. B of
Fig. 2 with dividing head removed.
Fig. 2 is side elevation both views drawn +th full size.

page_text: 1 is the frame carrying two vertical spindles 2. 3. having at their lower end
milling cutters 4. 5. in adjustable bearings 6. 7 so that varying sizes of nuts, screw
heads or keys can be milled. The nuts, screw heads or keys pass between the
cutters 4. 5 thereby milling both sides at once, for the purpose of using small
diameter cutters and to enable the cutters to be brought close together we drive
the cutter spindles 2. 3 by spiral or worm wheels 8. 9 from worms 10. 11 on the
horizontal shaft 12 the worms and wheels being right and left hand and the
worms 10. 11. of such width as to enable the cutters to be brought nearer or
further apart according to the object to be milled. The screws 13. 14 are for
adjusting the cutters. By preference we mill small sized nuts from round bars of
iron or steel which is held between the centres 15. 16 the dividing head end having
a square centre 16 which forms a carrier, for turning the bar round after milling
two sides, 17 is a dividing plate having notches 18 therein for the lever 19 to hold
the bar and plate in position the square centre 16 is adjustable by means of screw 20
and hand wheel 21 operating the shoot 22 so that a bar can be firmly held between
the centres 15. 16 the rod 23 is for turning the dividing plate 17 into required
position the slide 24 for carrying, the mandrel or bar to be milled between the
cutters 4.5 is moved by screw 25 worm wheel 26 worm 27 cone pulley 28 on shaft 29
which receives its motion by means of belt from cone pulley 30 the latter being
driven by wheel 31 pinion 32 on axle of horizontal shaft 12 on the opposite end of
the latter shaft is the cone pulley 33 which receives its motion from a countershaft
overhead. An adjustable stop 34 on the slide 24 comes in contact with and
disengages the worm wheel 26 with the worm 27 soon as the slide 24 has traversed
the required distance, the slide 24 is then brought back by means of a handle which
can be placed on the square 35 on the screw 25 ready for the bar or mandrel of
nuts being turned round to mill the next two sides, soon as the bar is turned round
the rod 36 is pushed by the attendant which by fork lever 36ª engages the worm
wheel 26 with the worm 25, the slide 24 then traverses the bar between the cutters
at the same time a supply of lubricant is freely supplied to the cutters either from
cistern overhead, or the body of machine can be made into a tank to receive it and
by rotary pump brought up to the cutters.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. A milling machine with two vertical spindles constructed as and for the
purpose herein fully described and illustrated.
2. The worms 10 11 wheels & 9 outter enindles 2 2
la haami
J. E. CARTER.
S. A. WRIGHT.