Improvements in and relating to Jaws or Fastenings for Gaffs, Booms, Yards, and the like.
Year: 1897

page_text: Date of Application, 15th Dec., 1897
Complete Specification Left, 15th Sept., 1898-Accepted, 3rd Dec., 1898
PROVISIONAL SPECIFICATION.
Improvements in and relating to Jaws or Fastenings for Gaffs, Booms,
Yards, and the like.
I, THOMAS ELI NORTON, of 34, Hartington Terrace, Brockhurst, Gosport, in the
County of Hants, Smith and Engineer, do hereby declare the nature of this
invention to be as follows;
My invention relates to gaffs, booms, yards, and the like, and comprises the
improved form of jaw or fastening therefor hereinafter described.
According to my said invention, in addition to the usual hinge joint as now
commonly employed, I provide a swivel joint between the latter and the strap or
band for securing the device to the mast, that is to say, instead or in lieu of
forming one part of the said hinge joint upon the strap or band, I employ a
separate piece which I attach to the said strap by means of a swivel joint of any
suitable description.
It will be seen that I am thus enabled to overcome the difficulty hitherto exper-
ienced in preventing the jaws from canting, and which in the old forms of jaws
has entailed the use of very wide plates, and of a cumbersome thickness and
weight of metal to ensure their capability of withstanding the strains to which
they are liable to be subjected when in use.
Dated this 15th day of Doom 190
A. F. SPOONER,
323, High Holborn, London, Agent for the Applicant.
Improvements in and relating to Jaws or Fastenings for Gaffs, Booms,
Yards, and the like.
I, THOMAS ELI NORTON, of 34, Hartington Terrace, Brockhurst, Gosport, in the
County of Hants, Smith and 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:-
-
My invention relates to gaffs, booms, yards, and the like, and comprises the
improved form of jaw or fastening therefor hereinafter described.
By my invention I am enabled to overcome the difficulty hitherto experienced
in preventing the jaws from canting, and which in the old forms of jaws has
entailed the use of very wide plates, and of a cumbersome thickness and weight

page_text: of metal to ensure their capability of withstanding the strains to which they are
liable to be subjected when in use.
In the accompanying drawings,
Figure 1 is an underside view, and
Figure 2 is an elevation, showing one form of my improved jaw or fastening
suitable for use on small yachts.
Figure 3 is a plan, and Figure 4 is an elevation, of a modified form suitable
for use on larger sized yachts, and
Figures 5 and 6 are similar views to Figures 3 and 4 showing, a further modi-
fied form suitable for use on large vessels.
'
Like letters indicate corresponding parts throughout the drawings.
is the jaw of the gaff; is the ordinary or usual hinge joint thereof; e is the
strap or band for securing the device to the mast; d is a portion of the mast;
is a portion of a gaff, boom, or yard; is the clue for the sail, and №³ is the
shackle for the main halyard.
C
According to my said invention, in addition to the usual hinge joint as now
commonly employed, I provide a swivel joint e between such hinge joint and the
strap or band that secures the device to the mast d. This swivel joint may either
be constructed in the manner hereinafter described or in any other suitable way.
In the construction shown in Figures 1 and 2 the swivel joint e is formed by
a rivet or pin upon the hinge-joint part, and which rivet or pin is passed through
a countersunk opening in the strap or band c and has its head burred or flattened
as shown.
In Figures 3 and 4 the construction is somewhat similar; the pin or rivet is, how-
ever, secured to a plate which plate is in turn rivetted by suitable rivets c¹ to
the strap or band c.
In the construction shown in Figures 5 and 6 the pin is formed on, or secured
to, the plate 2 (or it might be to the strap or bande itself). The said pin is screw-
threaded and passes freely through an aperture in the hinge-point part and the
swivel joint is completed by the nut el which locked in position by a cotter-
pin e².
The jaw may be affixed to the mast by a metallic clip as shown in Figures 1
and 2 or a rope strap may be used as shown in Figures 3 to 6.
It will be seen that when the jaw is in use the gaff or other part attached to it
is free to list in any direction without entailing any shearing strain upon it or
upon the strap or other part or upon the mast. Thus much less weight of metal
serves than would otherwise have been necessary.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is;-
1. In a jaw or fastening for gaffs, booms, yards, and the like a swivel joint
such as e substantially as set forth.
2. The improved jaw or fastening for gaffs, booms, yards, and the like con-
structed substantially as described with reference to the accompanying drawings.
Dated this 15th day of September 1898.
A. F. SPOONER,
323, High Holborn, London, Agent for the Applicant.