An Improved Fastening Device for Vehicle Axle Boxes.
Year: 1894

page_text: Date of Application, 9th July, 1894-Accepted, 18th Aug., 1894
COMPLETE SPECIFICATION.
An Improved Fastening Device for Vehicle Axle Boxes.
I, LEONHARD HAGMEYER of III Haupstrasse, Geislingen on Steig,
Wurtemberg in the Empire of Germany, 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 :-
The fastening device for vehicle axles hereinafter described has mainly for its
object to yield a sure fastening without the use of screw threads on the axle, and of
such a kind that any smith, and not merely those in factories specially arranged for
making vehicle axles, may both make the axles themselves, and also entirely and
completely carry out all necessary repairs to the same, or may themselves make and
attach any missing parts, as axle boxes on the ordinary systems are purchasable
everywhere.
This improved fastener is shown in the accompanying drawings in Figures 1 to 6.
Figure 3 is a longitudinal section ;
Figure 6, an elevation.
Figures 1, 2 and 5 are views when the safety screw cap is removed: and
Figure 4, a view of the latter alone.
The actual holding of the wheel hub on the axle A is effected by means of a
box B, which is placed over the axle spindle a, until it rests against the thicker
part of the axle. In this position, a T-shaped locking piece D, which, on the
drawing, is shown as turning on a pivot e of the box B, engages with its cross
head in a transverse slot of the axle spindle a, and holds the box B firmly on the
axle A. The box B has an external screw on which a safety cap C is screwed in
such a way that its front face rests hard against the box B. The locking piece D
is thus prevented from jerking up, by means of the cap C screwed over it, and is
retained in its position. In order that, when the safety cap C is being screwed
over the fastening box B, the latter shall not be able to turn, the box B engages,
by means of a projection 61, in a slot of the axle spindle a.
Instead of a T-shaped locking piece D hinged or pivotted on the fastening box,
having a wedge or cross head d, a simple pin of suitable section may also be passed
through the box B into the axle spindle a, which latter has for this object a
suitable hole, whilst the pin itself is in turn prevented from falling out by means
of the safety cap C. In order that the latter shall not become loose, a pin F,
acting under spring pressure, is arranged in a projection c of the safety cap C,
which pin engages in a hole 6 of the fastening box B.
In order to unfasten the safety cap C, its fastening device is first placed out of
operation by pushing the pin F backwards. For this purpose, the pin F is thinner
towards its outer end, and the spring g, lying round the thinner part of the pin,
bears against the thicker part of the latter. The thinner part of the pin is passed
at through the end of the projection c of the cap, and is bent down outside the
latter. An inclined surface c is formed on the projection c, which inclined surface
terminates in a surface vertical to the pin F. If the pin be turned, the bent part f
of the pin first slides on the inclined surface c' of the projection c and draws the
pin F so far back that it entirely comes out of the hole 6 of the box B. On being
turned further, the pin F is automatically held fast in this position by the pressure
of the turned down part of the pin on the flat part of the projection c. The
cap C is then screwed off, the wedge or cross head d of the locking piece D is
raised, or the pin drawn out, and the box B is also drawn off, that is to say, the
fastening is released. The securing of the cap C on the box B may naturally be
done by any other suitable arrangement to that of a pin F pressed on by a spring.

page_text: 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. An improved fastening device for vehicle axle boxes without a screw thread
on the axle spindle, characterised by a fastening box B retained on the axle
spindle a by means of a wedge d lying in a cross groove in said axle spindle and in
a recess of the fastening box, the wedge being prevented from falling out by means
of a safety cap c screwed over the fastening box B, substantially as hereinbefore
described and shown on the accompanying drawing.
2. A modification of the fastening device described in Claim 1, in which the
wedge d is connected with the fastening box by means of a hinge, or in other
like suitable manner.
3. A modification of the fastening device described in Claim 1, in which the
safety cap C is secured against automatically becoming loose from the fastening
box B, by means of a pin F attached to the former, and pressed by means of a
spring into a hole in the latter, substantially as described and shown.
Dated this 7th day of July 1894
LLEWELYN JONES,
Of 5, South Crescent Chambers, Liverpool, Agent for the Applicant.