Improvements relating to Roofs or Covers for Ricks and the like, to Scaffolding, and to Means for Raising and Lowering the same.
Year: 1888

page_text: Date of Application, 2nd Aug., 1888
Complete Specification Left, 24th Apr., 1889-Accepted, 29th June, 1889
PROVISIONAL SPECIFICATION.
Improvements relating to Roofs or Covers for Ricks and the like, to
Scaffolding, and to Means for Raising and Lowering the same.
We, WILLIAM PERRY of Dorset Farm Boyton near Launceston, Farmer, and
WILLIAM HENRY REED of Dunheved Iron Works Launceston, Agricultural Imple-
ment Maker, both in the County of Cornwall, do hereby declare the nature of this
invention to be as follows:-
Our invention chiefly relates to improved means for raising and lowering roofs or
covers for ricks, and scaffolding.
According to our said invention we provide four or any other suitable number of
posts which are secured vertically in the ground and which serve as guides for other
horizontal posts having eyes or the like which slide on the said vertical posts.
These horizontal posts serve to carry a roof or cover of any suitable construction or
the floor of a scaffolding.
In connection with the posts we arrange a number of holes, studs, bars or cogs
adapted to be used in conjunction with a lever, bolt or cog-wheel attached to the
fixed posts, by means of which the cover or scaffolding can be gradually raised by
successively acting upon each of the corners to raise it slightly.
A gravity or drop catch is provided for holding the movable posts and the parts
which they carry at any desired elevation.
The posts herein before described may be made of wood, iron or other suitable
material, and if desired each post may be formed in two or more sections.
Dated the 2nd day of August 1888.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements relating to Roofs or Covers for Ricks and the like, to
Scaffolding, and to Means for Raising and Lowering the same.
We, WILLIAM PERRY, of Dorset Farm, Boyton, near Launceston, Farmer, and
WILLIAM HENRY REED of Dunheved Iron Works, Launceston, Agricultural Imple-
ment Maker, both in the County of Cornwall, 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 :-
Our invention chiefly relates to improved means for raising and lowering roofs or
covers for ricks, and scaffolding.
According to our said invention we provide four or any other suitable number of
posts which are secured vertically in the ground and which serve as guides for other
posts which slide on the said vertical posts and carry horizontal beams. These
horizontal beams serve to support a roof or cover of any suitable construction or
the floor of a scaffolding.
In connection with each of the posts we arrange a number of holes, studs, bars or
cogs adapted to be used in conjunction with a lever bolt or cog-wheel attached to the
fixed posts, by means of which the cover or scaffolding can be gradually raised by
successively acting upon each of the levers to raise it slightly.
A gravity or drop catch is provided for holding the movable posts and the parts
which they carry at any desired elevation.
The posts hereinbefore described may be made of wood, iron or other suitable
material and if desired each post may be formed in two or more sections,

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To enable our invention to be fully understood we will describe the same with
reference to the accompanying drawing in which
Figure 1 is an end elevation of a roof provided with mechanism for raising the
same according to our invention.
Figure 2 is a side view of the same, and
Figure 3 is a vertical section through one of the posts and the mechanism attached
thereto.
a, a are the vertical posts which are secured in the ground and b, bare the sliding
posts carrying the horizontal beams.for supporting the roof c.
'd, d' are brackets which-are-secured to the posts a, a and form eyes in which the
posts b, b slide.
e, e are racks one of which is secured to each post and has working in con-
nection with it a lever f the fulcrum of which is suspended from the bracket d by
the chain g.
h, h are catches one of which is secured to each of the brackets d¹ the said
catches engaging with the teeth of the rack e and maintaining the roof in any
required position.
, are rods for operating the levers f, f and k, k are cords for disengaging the
catches h, from the rack teeth.
In raising the roof the lever fis engaged with one of the teeth of the rack and then
pulled until the catch h engages with the tooth next to that which it previously
occupied. The lever can then be caused to engage with another tooth and so on until
the roof is raised the proper distance.
This operation may be performed at the four posts successively or simultaneously.
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 roof, rick-cover or scaffolding mounted upon sliding posts and adapted to be
raised and lowered substantially as described.
2. The combination with a roof, rick-cover or scaffold of the kind referred to in the
preceding claiming clause, of racks, levers and catches, substantially as hereinbefore
described.
3. The manufacture and use of roofs or rick covers having mechanism for operating
the same, substantially as hereinbefore described and illustrated in the accompanying
drawing.
Dated the 2468 day on AUCT DAH
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.