Improvements in Apparatus for Turning Nuts.
Year: 1892

page_text: Date of Application, 7th Dec., 1892
Complete Specification Left, 7th Sept., 1893-Accepted, 28th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Turning Nuts.
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 relates to apparatus for turning nuts. The apparatus for purpose
aforesaid consists of a hollow spindle lathe head, the back end of the spindle is
turned slightly conical and the front or nose of the spindle is bored out to receive a
hardened steel bush to fit a mandrel the size of the nuts thread to be turned. The
bush has a serated face for the nut to screw against. The mandrel extends the
whole length of the lathe spindle and into a bearing at the back or tail end of
the head and between the spindle end and the mandrel bearing at the back end is a
clutch boss turned conical to fit the end of the spindle which fits on and is secured to
the mandrel.
The clutch boss has a groove and sneck thereon, a lever projects into the
groove. The clutch boss is secured to the mandrel in such position as to allow
the screwed portion to project through the spindle nose bush just under the depth
of the nut to be turned the cone part of the clutch engage with the conical end of .
the spindle.
The distance between the back end of the clutch and the mandrel bearing is
sufficient to allow the mandrel to be withdrawn by the clutch lever within the bush
on spindle nose. On the spindle in addition to the ordinary driving cone is a feed
cone which by belt gives motion to another cone secured to a shaft having a worm
thereon gearing with and driving a worm wheel in front of the compound slide rest.
On the upper face of the.worm wheel is a slotted disc with an adjustable stud the
latter having a sliding block thereon gives a reciprocating motion to the slide rest
by means of an elongated slot in an extending portion of the bottom slide, on the
top slide one or more tools according to the size of nut to be turned are fixed nuts
are placed in a slide with their centres opposite the mandrel projecting through the
spindle nose and are brought up to the mandrel by means of a lever actuated by an
adjustable runner on the top slide of rest as the tools are moved back from the
mandrel, the frictional contact of the clutch boss at the back end of the spindle
causing the mandrel to rotate draws the nut out of the slide on to the mandrel
against the serated face ready for the tools to operate on the nut, as soon as the
nuts are turned and the tools clear the nut a projecting catch on the underside of
the worm wheel comes in contact with the end of a lever which by connecting rod
and levers operates the catch lever within the groove of the clutch boss thus
stopping the rotation of the inner mandrel at the same time drawing the mandrel
within the spindle nose thereby releasing the nut and allowing it to drop off the
mandrel as soon as the catch on the underside of the worm wheel passes the end of
lever the latter is brought back into position by spiral spring or weight which by
its connection to the catch lever within the groove of the clutch boss causes the
latter to press against the back end of the spindle and thereby projecting the
screwed portion of the mandrel through the spindle nose ready for another nut.
The releasing of the nut and placing another in position is timed so that soon as
one nut has been stripped from the mandrel another is ready in the slide to take its
place, the nuts in the slide can either be placed one by one in position or they can
be put in a hopper and as the slide recedes it allows another nut to drop in the

page_text: position occupied by the previous nut. For setting the tools the top slide can
be adjusted independently each way by screw same
slide rest.
Dated this Sixth day of December 1892.
as an ordinary compound
JAMES EDWARD CARTER.
SAM AYRTON WRIGHT.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Turning Nuts.
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 apparatus for automatically turning nuts. In order that
the nature of this invention may be fully understood we have hereunto annexed
one sheet of drawings in which
Fig. 1 is front elevation and Fig. 2 is plan of lathe for turning nuts drawn th full
size.
The lathe head 1 has a hollow spindle 2 the back end 3 of the spindle 2 is
turned slightly conical and the front or nose 4 of the spindle is bored out to
receive hardened steel bush 5 to fit the mandrel 6 the latter being screwed at the
front end 7 to fit the nut 8 to be turned, the bush 5 has serated face for nut to bite
against and the mandrel 6 extends the whole length of spindle 2 and into bearing 9
the clutch boss 10 is secured to the mandrel 6 by screw 11 and is recessed slightly
conical at 12 to fit the conical end 3 of spindle 2, within the groove 13 of clutch
boss 10 a lever 14 projects having sneck 15 thereon to engage with projection or
sneck 16 in groove of clutch boss 10, the latter is secured to mandrel 6 in such
position as to allow the screwed portion to project through the steel bush 5 for a
nut to be screwed thereon. In addition to the driving cone 17 on the spindle 2 is
a feed pulley or cone 18 which by belt drives pulley 19 on worm shaf t20 the
worm 21 driving worm wheel 22, on the upper side of the latter is the grooved
cam.23-which-by-antifriction-runner-24-secured-to-the-bottom-slide-25-operates_the_
compound slide rest 26, on the top of the rest 26 are the tools 27. 28 for turning
the nut 8. At 30 is an adjustable dog which operates lever 31 the latter by
arm 32 operates nut slide 33 which carries the nut 34 up to the screwed mandrel 6
the weight and cord 35 draws the slide 33 back after being operated upon by
dog 30. the cam 36 on under side of worm wheel 22 operates by rod 37 lever 38
connecting rod 39 lever 40, the snecked lever 14 within the groove of the clutch
box 10, the weight and cord 41 draw the clutch boss 10 against the spindle 2
thereby projecting the screwed end of mandrel 6 through the bush 5.
The operation is as follows:-The lathe is set in motion, a nut is placed upon
the mandrel 6, the tools 27 28 on the compound slide rest 26 are brought up to and
turn the face of nut 8 and at the same time chamfer it, the grooved cam 23 on
upper side of worm wheel 22 operating the slide rest sufficient dwell is given in the
cam 23 so as to allow the chamfering tool to remain stationary for a short time
to put a better finish ou the nut 8 as soon as the nut 8 is turned the cam 23 by
antifriction runner 24 withdraws the slide rest 26 carrying the tools 27. 28, the
cam 36 on underside of worm wheel 22 being so timed as to operate the rod 37 and
by lever 38 connecting rod 39 lever 40 the sneck 15 in lever 14 within the groove
of the clutch boss 10 engages with sneck 16 thereby stopping the rotation of the
mandrel 6 at the same time drawing the nut 8 against the serated face of the
: bush 5, the latter causing the nut to rotate unscrews it from the mandrel; soon as

page_text: the cam has done its work the weight on cord 41 draws the clutch boss 10 against
the spindle end and causes the screwed portion of the mandrel to project through the
bush in spindle nose, as the slide rest recedes the dog 30 operates the lever 31 and
by arm 32 slide 33 brings the nut 34 against the screwed end of mandrel and is
thereby screwed on.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1st. A lathe constructed such as herein fully described and illustrated for
automatically turning nuts.
2nd. The mandrel 6 clutch boss 10 lever 14 connecting rod 39 lever 38 rod 37
cam 36 as and for the purpose herein fully described and illustrated.
3rd. The pulleys 18. 19 worm. 21 wheel 22 cam 23, antifriction runner 24,
slide 25, rest 26 and tools 27. 28 such as herein fully described and illustrated for
the purpose set forth.
4th. The dog 30. lever 31. 32 slide 33 as and for the purpose herein fully
described and illustrated.
Deted this 2nd day of September 1893.
J. E. CARTER.
S. A. WRIGHT.