Improvements in or relating to Screw-threaded Spindles or Bolts and their Nuts.
Year: 1890

page_text: Date of Application, 4th Jan., 1890
Complete Specification Left, 4th Oct., 1890-Accepted, 8th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in or relating to Screw-threaded Spindles or Bolts
and their Nuts.
We, GEORGE ANDERTON, of Moor Brook Mill, Preston, in the County of Lancaster,
Cotton Manufacturer, and GEORGE THOMAS BARLOW, of 15, Station Road, Lytham,
in the same County, Gentleman, do hereby declare the nature of this invention to be
as follows:-
:-
This invention of Improvements in or relating to Screw-threaded Spindles or Bolts
and their Nuts has for its object the saving of time usually lost in rotating the nut or
the spindle or bolt when screwing up or fastening an object or objects between the
bolt head and nut or between the jaws of a holding device such as a cramp or vice.
In carrying out the said invention we first form upon the exterior of the spindle or
bolt (hereinafter termed the "spindle") and the interior of the nut screw threading
of a suitable pitch so that the nut fits or screws upon the spindle in the usual manner.
Lengthwise of the spindle we cut away a portion of the screw-threading (that is to
say partially round the spindle) down to the bottom of the thread leaving a parallel
ridge or raised part on the spindle formed of that portion of the screw-threading not
cut away. Through the screw-threading of the nut we cut out a groove of such a
depth and width to allow of the said ridge of screw-threading to pass freely through
the said groove. Thus the grooved nut may be slided freely along the spindle to the
desired point whereupon the nut or spindle being partially rotated the screw-threads
forming the ridge and the screw-threads of the nut will engage with each other and
a further partial rotation will impart tho required grip or tightening effect on the
object to be secured or fastened. By a partial rotation in the opposite direction the
ridge on the spindle will be again brought within the groove in the nut and the nut
may then be slided off the spindle or the spindle may be pulled out of or withdrawn from
the nut. The edges of the screw-threads forming the ridge on the spindle are
preferably pointed or chamfered so as the more readily to engage with or enter the
screw-threading of the nut. The spindle may have two ridges of screw-threads and
the nut two corresponding grooves instead of only one as above described and the
ridges and grooves may be of any desired width to suit circumstances.
Dated this 4th dor of Innua 1800
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or relating to Screw-threaded Spindles or Bolts
and their Nuts.
We, GEORGE ANDERTON, of Moor Brook Mill, Preston, in the County of Lancaster,
Cotton Manufacturer, and GEORGE THOMAS BARLOW, of 15 Station Road, Lytham, in
the same County, Gentleman, 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 :-
This invention of Improvements in or relating to Screw-threaded Spindles or Bolts
and their Nuts has for its object the saving of time usually lost in rotating the nut or
the spindle or bolt when screwing up or fastening an object or objects between the
bolt head and nut or between the jaws of a holding device such as a cramp or vice.
In carrying out the said invention we first form upon the exterior of the spindle

page_text: 1.
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or bolt (hereinafter termed the "spindle") and the interior of the nut screw-
threading of a suitable pitch so that the nut fits or screws upon the spindle in the
usual manner.
Lengthwise of the spindle we cut away a portion of the screw-
threading (that is to say partially round the spindle) down to the bottom of the thread
leaving a parallel ridge or raised part on the spindle formed of that portion of the
screw-threading not cut away. Through the screw-threading of the nut we cut out
a groove or key way of such a depth and width as to allow of the said ridge of
screw-threading passing freely through the said groove. Thus the grooved nut may
be slided freely along the spindle to the desired point whereupon the nut or spindle
being partially rotated the screw-threading forming the ridge and the screw-threads
of the nut will engage with each other and a further partial rotation will impart
the required grip or tightening effect on the object or objects to be secured or
fastened. By a partial rotation in the opposite direction the ridge on the spindle will
be again brought within the groove in the nut and the nut may then be slided off
the spindle or the spindle may be pulled out of or withdrawn from the nut. The
edges of the screw-threads forming the ridge on the spindle are preferably pointed
or chamfered so as the more readily to engage with or take into the screw-threading
of the nut.
In the accompanying drawings,
Fig. 1 is a plan view of a screw-threaded spindle and
Fig. 2 a screw-threaded nut made or formed as above described.
Fig. 3 is a cross section taken at the line A B on
Fig. 4 which is a side elevation and
Fig. 5 is a plan view illustrating a mode of applying our said invention to a
joiner's bench vice of the sliding jaw type.
Fig. 6 is a side view; and
Fig. 7 a sectional front view taken at the line C-D on Fig. 6 illustrating a mode
of applying our said invention to an engineer's vice of the radial jaw type.
The construction of the vices illustrated in the drawings needs no further
description the said vices being of two well known types in common use.
a is the spindle; ba ridge or row of screw-threads formed upon the spindle a in
the manner herein before described; c is the nut having the groove or key-way d
cut through the screw-threading in such manner that when in line with or opposite
to the ridge of screw-tbreads b (see Figs. 3 and 7) the spindle may be pushed or
drawn freely through the nut as herein before stated.
We prefer to screw the spindle and nut with a double thread or a treble thread
or a thread of even a quicker pitch may be employed the ordinary single thread
being in practice of too slow a pitch to be suitable for the purpose of our
invention. In Figs. 1 and 2 square screw-threading is shewn and in the remaining
figs. ordinary V threading both systems of screw-threading being equally applicable
in carrying out our invention.
Although we have shewn and referred to the application of our said invention to
vices only by way of illustrating the kind of use to which our invention may be
applied it may obviously be applied to other analogous purposes that is to say to
those in which an object or objects is or are to be secured or drawn together in the
same way as is done by means of an ordinary screw bolt and nut.
In practice we find it preferable to use only a single ridge or row of screw-
threads on the spindle and only one key-way or groove in the nut rather than to use
two such ridges or rows of screw-threads and two corresponding key-ways or
grooves in the nut as suggested in the latter part of our Provisional Specification.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
The combination with a screw-threaded nut formed with a groove through its
screw-threading of a spindle having a ridge or row of screw-threads capable of
passing freely through the said groove in the nut when such ridge or row of screw-

page_text: threads is in line with or opposite thereto the screw-threading on the spindle and in
the nut being so arranged relatively to each other that when the said ridge is within
the said groove the screw-threads on the spindle will engage with the screw-threads
in the nut upon either the spindle or the nut being rotated substantially as described
and shewn in the drawings for the purpose set forth.
Dated this 4th day of October 1890.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.