Year: 1886

page_text: Date of Application, 25th Nov., 1886
Complete Left, 25th Aug., 1887
Complete Accepted, 27th Sept., 1887.
I PERCY RUSKIN ALLEN, of 35 Mall Road, Hammersmith, in the County of
Middlesex, Mechanical Engineer, do hereby declare the nature of this invention to be
as follows:-
Certain exposed parts of machines are liable to injury from atmospheric influences,
deposits of grit or dust and from other causes, and my invention has for its object to
obviate such injury by providing protecting coverings. This I effect by connecting to
movable and fixed portions of a machine flexible envelopes, that will fold up or collapse
and draw out or expand as one of the parts of the machine to which the envelope is
connected recedes from or approaches the other. Such envelopes may be made to
enclose slides, racks, screws or other mechanism that it may be desired to protect from
atmospheric influences, and may be made of any suitable material, and may when
necessary be air-tight, or water-tight or partially air-tight, or partially water-tight.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Means or Appliances for Protecting Parts of Machines.
I, PEROY RUSKIN ALLEN, of 35 Mall Road, Hammersmith, in the county of
Middlesex, 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:-
Certain exposed parts of machines are liable to injury from atmospheric influences,
deposits of grit or dust and from other causes, and my invention has for its object to
obviate such injury by providing protecting coverings. This I effect by connecting
to movable and fixed portions of a machine flexible envelopes, that will fold up or
collapse and draw out or expand as one of the parts of the machine to which the
envelope is connected recedes from or approaches the other. Such envelopes may be
made to enclose slides, racks, screws and other mechanism that it may be desired to
protect from atmospheric influences, and may be made of any suitable material, and
may when necessary be airtight, or watertight, or partially airtight, or partially
watertight.
The manner in which I carry out my invention will be clearly understood by
reference to the accompanying sheets of drawings, in which are shewn various
applications of protecting coverings made in accordance with my said invention.
Figs. 1, 2, 3 shew various views of a grinding machine such as is usually employed
for grinding plane irons, knives and the like. In these figs. the machine is shewn
fitted with protecting coverings made according to my invention and which may
conveniently take the form of an expanding and collapsing bag or bags or sack or
sacks which is or are fitted as shown in the drawings to envelope the slide on which
the saddle moves.
The expanding and collapsing bags or sacks are fixed at one end to the frame, and
at the other end to the saddle. As the saddle traverses upon the slide one bag or sack
tends to fold up and the other to open out. In the drawings the movement of the
saddle is shewn as being obtained from a screw but it may be worked by any other
means. It is sometimes desirable to provide the ends of the screw or shaft which
traverses the saddle with stuffing boxes to exclude any dirt or vapour entering at
these points. Stuffing boxes have been before employed to keep grit from the journals
of machinery and any convenient form may be employed.
Fig. 4 shews a detached view of a protecting expanding and collapsing bag or
sack when expanded and Fig. 5 shews the same when contracted or collapsed.
Figs. 6, 7, 8, 9, 10, 11 shew the application of similar protecting expanding or
collapsing bags or sacks to the sliding surfaces of a tool grinding machine, in this
case the bags or sacks are shown applied to the vertical adjustment and also to the
saddle slide.

page_text: Figs. 12, 13, 14 shew an emery grinding machine in which independent expanding
or collapsing bags or sacks are employed to cover the bars on which the sliding
carriage or carriages move and also the screws by which the feed motion is given
to them.
Fig. 15 shews the protecting bags or sacks applied to a slotting machine and Fig. 16
shews the slide rest of a lathe protected in a similar manner the object being to
prevent the particles of metal lodging on and abrading the sliding surfaces or other
working parts.
The expanding or collapsing bags or sacks according to my invention may be made
of cloth, canvas, leather, india-rubber, or other suitable material.
Having now particularly described and ascertained the nature of the said invention
and in what manner it is to be performed I declare that what I claim is :—
For the purpose of protecting parts of machines from injury such as referred to
above flexible tubes applied substantially in the manner hereinbefore described with
reference to the drawings.
AN
1000