An improved wheel Drag or Skid.
Year: 1898

page_text: Date of Application, 18th Feb., 1898-Accepted, 19th Mar., 1898
An improved wheel Drag or Skid.
I, KARL MICHAEL PFEUFFER, of 4, Schlotthauerstrasse, Munich, in the German
Empire, Gentleman, 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, reference being had to the accompanying drawings
and to the letters and figures marked thereon, that is to say:-
This invention relates to a wheel drag or skid, and it has for its object to so
construct the lower portion, i.e., the base plate, which is most liable to wear, as to
render it easily renewable when worn, and also to provide it with renewable projecting
studs or pieces.
And in order that my invention may be readily understood I will describe the same
fully with reference to the accompanying drawings in which:
Fig. 1 is a perspective view of my improved wheel drag or skid, and, Fig. 2 a
section thereof on the line x, x, of Fig. 1.
The upper portion or plate a is provided with a longitudinal dovetail groove d,
adapted to receive a correspondingly shaped tenon formed on the base plate b.
When the two plates a and 6 of this drag or skid are in use, their tendency is to
draw the tenon further into its groove and so render it impossible for the said plates
to become disengaged or detached.
The base plate 6 is further provided with tapered holes into which engage tapered
studs or pieces c designed to grip the ground. The head or larger end of these
tapered studs or pieces rest against the upper plate a, so that they cannot fall out
when in use; and in order to change or renew them it is only necessary to first dis-
engage the plates a and b.
No tool is required for detaching the parts, and change pieces can be quickly
attached without having to send, on every occasion, to a smith for a new drag or skid.
A further advantage is that the new drag or skid can be produced at the same price
as those heretofore in use, and that only the wearing parts need be afterwards
renewed, which of course is much cheaper than having to purchase an entirely new
one each time. Furthermore, the use of my improved drag effects a saving of time,
and other expenses which are unavoidable with ordinary drags or skids.
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. A wheel drag or skid consisting of two plates, the upper one of which (suspended
in the usual way from the vehicle) has a dovetail groove, while the base or lower
plate is detachably connected to the upper one by means of a tenon formed on such
base plate and adapted to engage the dovetail groove, said base plate being further
provided with tapered holes to receive tapered studs or pieces which are then kept in
position by the upper plate, substantially as described.

page_text: 2. My improved wheel drag or skid, substantially as herein before described and
shewn in the drawings.
Dated this 18th day of February 1898.
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 5A, Market Street, Nottingham,
Agent for the Applicant.