Year: 1896

page_text: Date of Application, 21st July, 1896
Complete Specification Left, 21st Apr., 1897-Accepted, 26th June, 1897
We GUSTAVUS EMIL STRAUSS, of 487 Broadway, New York, County and
State of New York U.S.A. Merchant and EMIL KLAHN of West Hoboken,
County of Hudson and State of New Jersey U.S.A. Mechanical Engineer do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in screw-nuts and has for its purpose to
provide a screw-nut which, when screwed upon a screw bolt cannot be loosened by
the vibration of the machine or other object to which it is applied.
This is attained by the construction shown in the accompanying drawings in
which
Fig. 1 is a longitudinal section of our improved screw-nut and of a screw-bolt to
which the same is attached and
Fig. 2 is a section on line 2-2 of Fig. 1.
Fig. 3 is a top-view and Fig. 4 a section of the screw-nut.
Fig. 5 represents a detail showing the fastening attachment.
A in the drawings is a screw-nut which on its top is provided with a tapering
inwardly expanding excavation a, the side wall of which is ribbed or serrated B is
an annular or nearly annular ring which has an inwardly extending projection b
and is splitted so as to leave in its body an opening.
The corners b¹¹ of the open ring are made sharp which may be obtained by
flattening the outer end-portions of the same, as shown in Fig. 4. The ring is
made of spring-acting metal so that the ends of the same can be pressed together,
and the outer periphery of the same may be bevelled, so as to correspond with the
taper of the excavation a of the screw-nut, D represents a screw-bolt which has a
longitudinal groove d.
Our improved screw-put is used in the following manner:
After the screw-nut is screwed upon the screw-bolt and has on the same obtained
the required position, the ends of the open ring B are pressed together, so that
the circumference of the same is decreased, and the ring is then placed into the
excavation a of the screw-nut and pushed down upon the bottom of the same. In
doing so, the projection b of the ring slides in the groove d of the screw-bolt.
As soon as the ring has been placed into the excavation of the screw-nut, as said
before, the ends of the ring, by the spring action of the same, will spread apart and
the sharp corners of the ring will pierce between the ribs or serrations of the
excavation, so that thereby, and by the projection b, located in the grooved of the
bolt, a lateral, as well as an upward motion of the ring is prevented. It is entirely
impossible that the screw-nut gets loose on the screw-bolt by vibration or any other
cause, or can be detached from the same without removing the ring from the
excavation of the nut.
1000
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.

page_text: Improvements in Locking Nuts.
We, GUSTAVUS EMIL STRAUSS, of 487 Broadway, New York, County and
State of New York, U.S.A. Merchant, and EMIL KLAHN, of West Hoboken,
County of Hudson and State of New Jersey, U.S.A. Mechanical 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:-
This invention relates to improvements in screw-nuts, and has for its purpose
to provide a screw-nut, which when screwed upon a screw bolt cannot be loosened
by the vibration of the machine or other object to which it is applied.
This is attained by the construction shown in the drawings filed with the
Provisional Specification, in which
Fig. 1 is a longitudinal section of our improved screw-nut and of a screw-bolt to
which the same is attached, and
Fig. 2 is a section on line 2-2 of Fig. 1.
Fig. 3 is a top view and Fig. 4 a section of the screw-nut.
Fig. 5 represents a detail showing the fastening attachment.
A in the drawings is a screw-nut which on its top is provided with a tapering
inwardly expanding excavation a the side wall of which is ribbed or serrated, B is
an annular or nearly annular ring which has an inwardly extending projection b
and is slitted so as to have in its body an opening.
The corners 661 of the open ring are made sharp which may be obtained by
flattening the outer end portions of the same, as shown in Fig. 5. The ring is
made of spring acting metal so that the ends of the same can be pressed together,
and the outer periphery of the same may be bevelled, so as to correspond with the
taper of the excavation a o the screw-nut, D represents a screw-bolt which has a
longitudinal groove d.
Our improved screw-nut is used in the following manner: After the screw-nut is
screwed upon the screw-bolt and has on the same obtained the required position
the ends of the open ring B are pressed together so that the circumference of the
same is decreased, and the ring is then placed into the excavation a of the screw-
nut and pushed down upon the bottom of the same. In doing so, the projection b of
the ring slides in the groove d of the screw-bolt. As soon as the ring has been
placed into the excavation of the screw-nut, as said before, the ends of the
ring by the spring action of the same will spread apart and the sharp corners
of the ring will pierce between the ribs or serrations of the excavation so
that thereby, and by the projection located in the groove d of the bolt, a lateral
as well as an upward motion of the ring is prevented. It is entirely impossible
that the screw-nut gets loose on the screw-bolt by vibration or any other cause,
or can be detached from the same without removing the ring from the excavation
of the nut.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is :
1. A screw-nut having on its top an excavation provided with lateral ribs or
serrations and an open spring-acting ring the ends of which engage the ribs or
serrations of the said excavation substantially as set forth.
2. A screw-nut having on its top an inwardly tapering excavation provided with
lateral ribs or serrations and an open spring-acting ring having its outer periphery

page_text: bevelled to correspond with the taper of the excavation and placed into the latter,
the corners of the ring engaging the ribs or serrations of the excavation, substantially
as set forth.
3. A screw-nut having on its top an excavation and a spring-acting open ring
placed into the excavation and being provided with an inwardly extending pro-
jection, in combination with a screw-bolt having a longitudinal groove, the said
projection of the open ring extending into the said groove of the screw-bolt,
substantially as set forth.
4. A screw-out having on its top an excavation provided with lateral ribs or
serrations and an open spring-acting ring provided with an inwardly extending
projection, the ends of the ring engaging the ribs or serrations of the said
excavation, in combination with a screw-bolt having a longitudinal groove in
which the projection of the said ring is located substantially as and for the
purpose set forth.
Dated this 21st der of April 1807
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.