Improvements in and relating to Safety-devices for Preventing Workmen and others from being Precipitated from Roofs and the like.
Year: 1894

page_text: Date of Application, 27th July, 1891-Accepted, 8th Sept., 1894
COMPLETE SPECIFICATION.
Improvements in and relating to Safety-devices for Preventing
Workmen and others from being Precipitated from Roofs and
the like.
JULIUS MARAWSKE, of 24 Beussel Strasse, Berlin, Kingdom of Prussia,
German Empire, 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, the purpose of which is stated by the above title, consists in
arranging on the roof of buildings of any character a pipe or pipes fixed to the
respective roof in a horizontal or more or less inclined position, as required by the
configuration of that roof, and provided in its entire length with a slot adapted to
let pass a projection extending from a slide arranged within said pipe. Said slide
is connected with one end of the safety-rope, the other end of which is fixed to a
girdle embracing the body of the workman. The latter may, thus, move to any
place of the respective roof without loosing its secure connection with the pipe, or
the hold afforded by the latter respectively, as the slide afore mentioned will
follow along the pipe by reason of the pull exerted by the workman through
the rope.
In the mode of execution shown in the drawing, a designates the roof, to the
ridge of which are secured the pipes 6 by means of the supports c, Figs. 1-3.
One end of the whole series of said pipes 6 is bent first rectangularly, and then in
an obtuse angle, so as to reach down for a certain distance into the man-hole d of
the roof. All the pipes b, as well as the boxes e connecting them, are provided
with slots b¹ and e¹ respectively, Figs. 5 & 6, so that a projection g forming part of
the slide h', Figs. 7 & 8, and extending through said slot to the outside, may be
moved along the whole length of the slot, or throughout the whole length of the
series of pipes respectively.
The slide is formed by two sphere-segments h having between them a
piece g, the projecting portion of which receives the safety-rope i, Fig. 8. If
that rope is pulled by the workman moving along the roof, the slide will follow
within the pipes f, so that at every moment the workman is securely protected
against precipitation.
After the slide, or sphere respectively, has been introduced into the vertical
portion of the guide-pipe hanging down into the man-hole of the roof, the entrance
to the slot is closed by turning a slit ring k, Fig. 2, attached to the free end of said
portion of pipe. The slide is, thus, hindered from leaving the guide-pipe even if
gliding down through the inclined portion of pipe into the vertical one. In order
to prevent the slide altogether from gliding down, even into the inclined portion of
pipe, I prefer to make the first connecting box (e) movable so as to be able to turn
the same, and interrupt thereby the continuation of slot b¹.
Instead of employing pipes for guiding the slide, I may use as well single or
double (parallel) bars embraced by, or holding between them, respectively, the
slide; the construction as well as configuration of the latter may be varied
according to any requirement. Several slides may be employed with one and the
same guide-tubes or guide-bars respectively; and several guide-tubes or guide-bars
respectively, may be secured to one roof, according to the extent and configuration
of the same.

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a safety-device for preventing workmen from precipitating from roofs and
the like, the combination with a slide adapted to be coupled with the safety-rope
for the workman, of guide-bars, guide-pipes, or equivalent guide-means adapted to
hold said slide, and to allow the latter to be moved along said bars, pipes, or
equivalent means, substantially as described.
2. In a safety-device for preventing workmen from precipitating from roofs
and the like, the combination with a pipe or pipes provided with a longitudinal
slot or slots, of a slide or slides adapted to be moved along within said pipe or
pipes, and to be coupled with the safety-rope for the workman, substantially as
described.
3. In a safety-device for preventing workmen from precipitating from roofs and
the like, the combination with a pipe or pipes provided with a longitudinal slot or
slots, of a slide or slides adapted to be moved along within said pipe or pipes, and
to be coupled with the safety-rope for the workman, said pipe or pipes being
connected by slit connecting-boxes all or some of which are adapted to be turned
so as to close the entrance to, or exit from, said slots, or to interrupt the
continuation of the same respectively, substantially as described.
4. In a safety-device for preventing workmen from precipitating from roofs and
the like, the combination with a pipe or pipes (6) provided with a longitudinal slot
or slots (6), of a slide or slides adapted to be moved along within said pipe or pipes,
and to be coupled with the safety-rope for the workman, said slide or slides con-
sisting of two hemispherical portions (h h¹) having between them a projecting
portion (g), the latter extending through said slot or slots (6¹), substantially as
described and shown.
Latea the th do
of
TRUA
I laten the 27th day of Laiv BRUA
JULIUS MARAWSKE,
By Geo. Thos. Hyde,
1, Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for the Applicant.