Year: 1887

page_text: Date of Application, 10th Mar., 1887
Complete Left, 12th Dec., 1887
Complete Accepted, 13th Jan., 1888
GEORGE ABRAHAM GOODWIN and WILLIAM FIELD How, both of 2 Victoria
Mansions in the City of Westminster Engineers, do hereby declare the nature of this
invention to be as follows:-
Our invention relates to an improved lock nut device whereby we effect the locking
or grip of the nut upon the bolt without in any way impairing or reducing the strength
of the nut and without the use of an auxiliary or separate piece such as a washer.
To carry out our invention, we form on the top of the nut, which may be inade of
steel, iron, brass, or other suitable metal, one or more projections, which are forged or
cast with the nut, and are of such form that they may have portions of threads cut
upon them, or they may be so made that the inside edge of the clip may be about level
with the greatest diameter of the thread of the nut. After the nut has been tapped,
the clips are pressed inward, after which the clips effect the gripping action required.
We may further so shape the clips that they do not cut the threads of the bolts when
they are screwed up but offer an effective resistance to any retrograde movement, or
one or more of the clips may be made elongated laterally, and partly separated from
the body of the nut by a saw cut, the free ends of which, when forced in, will act as a
friction pawl.
Dated this 10th day of March 1887
GEORGE ABRAHAM GOODWIN.
WILLIAM FIELD HOW.

page_text: Figure 1 is a plan and Figure 2 an elevation of a square lock nut under our
invention. a body of nut. 6 tapped hole. projecting side clips, these clips are pressed
or bent in so as to reduce the aperture between them and enable them to grip
the bolt.
Figure 3 is a plan and figure 4 an elevation of a squaro lock nut with central
clips e pressed inwards as above set forth. Nuts made according to Figures 1, 2, 3
and 4 may be easily formed by forging (namely rolling cutting off and punching).
Figure 5 is a plan and figure 6 an elevation of a square nut with four corner
clips c and figure 7 is a plan and figure 8 an elevation of a square nut with four
central clips. These nuts are advantageously formed by forging (that is in this
modification stamping and pressing in.
Figures 9 and 9 are plans, and figures 10 and 10 are elevations of square nuts
with side clips c and central clips c¹; 9 and 10 have the clips disposed diagonally
and 9 and 10 the clips at right angles.
Figure 11 is a plan and figure 12 an elevation of a hexagonal nut with clips similar
to figures 1 and 2.
Figure 13 is a plan and figure 14 an elevation of a hexagonal nut with clips
similar to Figures 3 and 4.
Figure 15 is a plan and figure 16 an elevation of a hexagonal nut in which raised
lug clips c are shewn suitable for largo nuts; the said clips are equally applicable on
square nuts.

page_text: It will be obvious that many modifications of nuts having the essential features
under our invention may be made and that the shape of the clips and of the nuts may
be varied.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed we declare that what we
claim is
First. Nuts with projecting clips formed by forging or casting which clips are
afterwards pressed or bont inwards substantially as specified for the purpose set
forth.
Second. Manufacturing Nuts by forging or casting the same with projections
thereon when such projections are pressed or bent inwards substantially as herein
described.