An Improved Lock Nut for Bolts and the like.
Year: 1892

page_text: Date of Application, 19th July, 1892-Accepted, 20th Aug., 1892
COMPLETE SPECIFICATION.
An Improved Lock Nut for Bolts and the like.
1, CAJETAN BANOVITS of the City of Budapesth, VII Kerepesi-út, 34, in the
Kingdom of Hungary, Director of the Royal Hungarian State Railways, do
hereby declare the nature of this invention and the manner in which the same is to:
be performed to be particularly described in and by the following statement :-
My invention relates to an improved lock nut for bolts and the like, and refers.
especially to that class of lock nut such as I have represented in the drawings and.
deskribed in the Specification to_my_Letters Patent No. 9818 of 1891.
In the Specification No. 9818 of 1891 aforesaid, it is remarked in reference to.
the action of the conical or other clamping extension, lug or projection, which is of
one piece with the nut proper and can be full or slotted, as follows:
"If the conical part is not slotted, the only clamping which takes place on
tightening up the nut, besides the compression of the threads which takes place
with ordinary nuts, is that of the conical surface of against the interior walls of
the boring or c¹. If however the part is slotted the same being elastic will be.
pressed into the threads of the bolt when the nut is tightened up."
The object of this slotting of the projection or extension of the nut a, was, to.
snugly press the parts of said extension or projection into the threads of the.
screw bolt and increase the clamping power of the nut on the screw bolt, when the
nut is tightened up, in addition to the friction or clamping produced between
the outer surface of the extension or projection and the interior walls of the.
boring b' or c¹.
Now from the subsequent experiments and experience gathered since the date.
of my said Letters Patent No. 9818 of 1891, I have ascertained that when the
material for the clamping extension or projection is appropriately chosen the action.
which is only ascribed to those nuts with slotted extensions, that is, the energetic.
clamping between the threads of the same slotted extensions or projections and
those of the bolt or the like, can also be attained with unslotted extensions or
projections when the nut a with unslotted extension or projection is well tightened
up, in which case the pressure brought to bear on the parts will be such that.
through the said pressure and the conicity of the boring or c¹ the said extension
or projection will be compressed into a smaller area and consequently the female
threads of the said unslotted extension or projection forced firmly into the male
threads of the bolt, spindle or the like.
It will be evident to all versed in the art that although I have represented the
unslotted extensions or projections and the borings for receiving the same in the.
accompanying drawing as of conical form, other forms can be used without in any
way departing from the nature of my invention, the object of my said invention.
being essentially as aforementioned to so tighten up the nut and drive the extension
or projection into its boring or opening that the metal or material of which the
extension or projection is formed will be compressed into a smaller area and the
screw bolt, spindle or the like so securely clamped that a loosening of the nut on
said bolt, spindle or the like is absolutely prevented.
Figs. and 2 represent the application of my improved lock nut as such in
elevation, and
Fio 3 the application of the same as jam nut.

page_text: Having now particularly described the nature of this invention and the manner
in which the same is to be performed, I declare that what I claim and wish to
secure by Letters Patent is:
".
A lock nut with unslotted extension or projection whereby the unslotted extension
or projection is so drawn or forced into the boring or opening for receiving the
same in tightening up the nut, that the area of said extension or projection is
decreased and the threads of the said extension or projection securely forced into
those of the bolt, spindle or the like, substantially as described in the Specification
and shown in the drawings.
Dated this 19th day of July 1892.
HORN & SON,
Applicant's Agents.