Improved Means for Securing Nuts upon Bolts.
Year: 1890

page_text: Date of Application, 28th Mar., 1890
Complete Specification Left, 22nd Jan., 1891-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
Improved Means for Securing Nuts upon Bolts.
We, THE HARRISON SELF-TIGHTENING STEEL RAIL-KEY COMPANY,
LIMITED, of 48, Gray's Inn Road, in the County of London, and JOHN
HARRISON, of Stamford, in the County of Lincoln, Engineer, do hereby declare
the nature of this invention to be as follows:-
Our invention relates to means for securing nuts upon their bolts.
According to our invention a movable piece or pieces may be formed upon or
attached to the nut, or upon the bed upon which the nut bears, or upon a washer
which is made to turn with the nut. These pieces or lips are so arranged that
when the nut is screwed home they will lie in an inclined position with a certain
amount of pressure upon them so that any backward or unscrewing movement will
tend to cause them to assume a more or less vertical or upright position and thus
preventing any unscrewing of the nut.
Dated the 28th day of March 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improved Means for Securing Nuts upon Bolts.
We, THE HARRISON SELF-TIGHTENING STEEL RAIL-KEY COMPANY,
LIMITED, of 48, Gray's Inn Road, in the County of London, and JOHN
HARRISON, of Stamford, in the County cf Lincolu, 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:-
Our invention relates to means for securing nuts upon their bolts.
According to our invention a moveable piece or pieces may be formed upon or
attached to the nut, or upon the bed upon which the nut bears, or upon a washer
which is made to turn with the nut. These pieces or lips are so arranged that
when the nut is screwed home they will lie in an inclined position with a certain
amount of pressure upon them so that any backward or unscrewing movement will
tend to cause them to assume a more or less vertical or upright position and thus
prevent any unscrewing of the nut.
To enable our invention to be fully understood we will describe the same with
reference to the accompanying drawing, in which,
Figure 1 is a plan of a nut provided with means for preventing the unscrewing
of the same according to our invention, and
Figures 2 and 3 are side views illustrating the operation of our invention.
Figure 4 is a plan view of a washer provided with our improvements, and
Figures 5 and 6 are views illustrating its operation.
Similar letters of reference indicate corresponding parts in the several figures.
a, a indicate nuts, b, b bolts upon which the same are screwed and c, e the
movable pieces which prevent the unscrewing of the nuts.
As shown in Figures 1 to 3 the piece c is represented as a strip of metal
(preferably steel) located in a recess d in the nut a and secured by a rivet e the
said strip being arranged to project beyond the bottom face of the nut, as shown
in Figure 2, in such a manner that when the said nut is applied to a bolt by
turning it to the right as indicated by the arrow in the said figure, the said strip,
Dell

page_text: No text detected.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.

page_text: Date of Application, 28th Mar., 1890
Complete Specification Left, 22nd Jan., 1891-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
Improved Means for Securing Nuts upon Bolts.
We, THE HARRISON SELF-TIGHTENING STEEL RAIL-KEY COMPANY,
LIMITED, of 48, Gray's Inn Road, in the County of London, and JOHN
HARRISON, of Stamford, in the County of Lincoln, Engineer, do hereby declare
the nature of this invention to be as follows:-
Our invention relates to means for securing nuts upon their bolts.
According to our invention a movable piece or pieces may be formed upon or
attached to the nut, or upon the bed upon which the nut bears, or upon a washer
which is made to turn with the nut. These pieces or lips are so arranged that
when the nut is screwed home they will lie in an inclined position with a certain
amount of pressure upon them so that any backward or unscrewing movement will
tend to cause them to assume a more or less vertical or upright position and thus
preventing any unscrewing of the nut.
Dated the 28th day of March 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improved Means for Securing Nuts upon Bolts.
We, THE HARRISON SELF-TIGHTENING STEEL RAIL-KEY COMPANY,
LIMITED, of 48, Gray's Inn Road, in the County of London, and JOHN
HARRISON, of Stamford, in the County of Lincoln, 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 :-
Our invention relates to means for securing nuts upon their bolts.
According to our invention a moveable piece or pieces may be formed upon or
attached to the nut, or upon the bed upon which the nut bears, or upon a washer
which is made to turn with the nut. These pieces or lips are so arranged that
when the nut is screwed home they will lie in an inclined position with a certain
amount of pressure upon them so that any backward or unscrewing movement will
tend to cause them to assume a more or less vertical or upright position and thus
prevent any unscrewing of the nut.
To enable our invention to be fully understood we will describe the same with
reference to the accompanying drawing, in which,
Figure 1 is a plan of a nut provided with means for preventing the unscrewing
of the same according to our invention, and
Figures 2 and 3 are side views illustrating the operation of our invention.
Figure 4 is a plan view of a washer provided with our improvements, and
Figures 5 and 6 are views illustrating its operation.
Similar letters of reference indicate corresponding parts in the several figures.
a, a indicate nuts, b, b bolts upon which the same are screwed and c, c the.
movable pieces which prevent the unscrewing of the nuts.
As shown in Figures 1 to 3 the piece c is represented as a strip of metal
(preferably steel) located in a recess d in the nut a and secured by a rivet e the
said strip being arranged to project beyond the bottom face of the nut, as shown
in Figure 2, in such a manner that when the said nut is applied to a bolt by
turning it to the right as indicated by the arrow in the said figure, the said strip,

page_text: when it comes into contact with the surface against which the nut is to be screwed,
will assume the position shewn in Figure 3. When the strip is in this position
any movement of the nut in the reverse direction will be counteracted in an
obvious manner which will be understood without further description, the free end
of the said strip tending to bite into the metal surface with which it is in contact.
In the modification of our invention shewn in Figures 4, 5 and 6 the strips c, c
are formed upon a washer which is provided with lugs or projections
corners so that it will rotate with the nut. The operation of the strips in this
modification is the same as hereinbefore described.
at the
When the strips are beneath the washer we arrange them in slots beneath the
said nut with one end projecting, as indicated by dotted lines in Figure 2, so that
when the nut is screwed home they are bent as indicated by dotted lines in
Figure 3.
It is obvious that our improvements may be used in conjunction with nuts
having left-hand screw-threads.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
(1.) Locking or securing nuts upon their bolts by means of strips secured to or
placed beneath the said nuts substantially as described with reference to Figures 1
to 3 of the accompanying drawing.
(2) The modification of our invention wherein the strips are formed upon a
washer, substantially as described with reference to Figures 4 to 6 of the
.accompanying drawing.
Dated the 22nd day of January 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.