Improvements in Driving Plates for Shafting Straightening and.. Turning Lathes.
Year: 1891

page_text: Date of Application, 11th Sept., 1891
Complete Specification Left, 11th June, 1892-Accepted, 16th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Driving Plates for Shafting Straightening and..
Turning Lathes.
WILLIAM COPLEY 44 Parkinson Lane, Halifax in the County of York,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
Heretofore driving plates have been screwed on the lathe spindle having one or
more driving studs projecting therefrom to engage with the carrier secured to the
end of shaft to be rotated-or by a Clements driver secured to the driving plate.
In each case the operator has to throw the belt from the fast to the loose pulley to
stop the rotation of the shaft, whereas a driving plate constructed according to my
invention can be used as a positive driver or regulated so that the slightest tension
caused by the operator placing his hand upon the shaft will stop its rotation in any
required position to enable the shaft to be straightened. The driving plate is con-
structed as follows:-On the spindle is screwed a boss having a key groove cut in
its periphery, parallel to its axis-a corresponding key groove is cut in the boss of
a driving plate which fits on the spindle boss, the key in the latter is about half
length of groove and is provided with a set screw for holding it in position either in
or out of the groove in the driving plate, when engaged with the driving plate it
becomes a positive driver for turning but when it is not engaged with the driving
plate a loose die in the boss of the driving plate is caused to press against the
periphery of the spindle boss by means of a spiral spring the tension of the latter
can be regulated by set screw to cause the driving plate to rotate with the spindle
boss and by driving studs and carrier on shaft end cause the shaft to rotate in the
lathe to keep the driving plate in proper position on the spindle boss a circun-
ferential groove is cut in the spindle boss and a plate which fits in the groove is
secured by set screw to the driving plate.
لبحر
3
1001
COMPLETE SPECIFICATION.
Improvements in Driving Plates for Shafting Straightening and
Turning Lathes.
1. WILLIAM COPLEY of 44 Parkinson Lane, Halifax, in the County of York
Mechanical 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 :-
Heretofore driving plates have been screwed on the lathe spindle having one or
more driving stud projecting therefrom to engage with the carrier secured to end
of shaft to be rotated or by a Clements driver secured to the driving plate, in each
case the operator has to throw the belt from fast to loose pulley to stop rotation of
shaft, whereas a driving plate constructed according to my invention can be used
as a positive driver or regulated so that the slight tension caused by the operator
placing his hand upon the shaft will stop its rotation in any required position to
enable the shaft to be straightened. In order that my invention may be fully
understood I have hereunto annexed one sheet of drawings in which,
Fig. 1 is a back elevation of driving plate. Fig. 2 sectional elevation and Fig. 3
a detail.
The driving plate is constructed as follows:-On the spindle 1 is screwed boss 2
with key groove 3 parallel to its axis, a corresponding key groove 4 is cut in the

page_text: boss of driving plate 5, the key 6 is held in position by set screw 7 either in or out
of the groove 4 when in the groove 4 it is a positive driver but when out a loose
die 8 is caused to press against perepery of boss 2 by means of spiral spring 9 and
adjusting screw 10 tension being put on the die 8 sufficient to cause the driving
plate 5 to rotate with the spindle and boss 2, the holes 11. 12 are for studs which
operate the carrier on shaft to be operated upon, the driving plate is kept in
position by key 13 in groove 14 cut in screwed boss 2, the key 13 and key 6 have
each elongated holes for the holding screws as shewn at 6 in Fig. 3. -
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:-
1. A slip catch plate constructed as and for the purpose herein described and
illustrated.
2. The screwed boss 2 the driving plate 5, die 8, spring 9, screw 10 as and for
the purpose herein fully described and illustrated.
Dated this 9th day of June 1892.
WILLIAM COPLEY.